919 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0},
920 {".h", "@c-header", 0},
921 {"@c-header",
922 /* cc1 has an integrated ISO C preprocessor. We should invoke the
923 external preprocessor if -save-temps is given. */
924 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
925 %{!E:%{!M:%{!MM:\
926 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
927 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\
928 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \
929 %(cc1_options)\
930 -o %g.s %{!o*:--output-pch=%i.gch}\
931 %W{o*:--output-pch=%*}%V}\
932 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\
933 cc1 %(cpp_unique_options) %(cc1_options)\
934 -o %g.s %{!o*:--output-pch=%i.gch}\
935 %W{o*:--output-pch=%*}%V}}}}}}", 0},
936 {".i", "@cpp-output", 0},
937 {"@cpp-output",
938 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0},
939 {".s", "@assembler", 0},
940 {"@assembler",
941 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0},
942 {".S", "@assembler-with-cpp", 0},
943 {"@assembler-with-cpp",
944#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
945 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
946 %{E|M|MM:%(cpp_debug_options)}\
947 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
948 as %(asm_debug) %(asm_options) %|.s %A }}}}"
949#else
950 "%(trad_capable_cpp) -lang-asm %(cpp_options)\
951 %{E|M|MM:%(cpp_debug_options)}\
952 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
953 as %(asm_debug) %(asm_options) %m.s %A }}}}"
954#endif
955 , 0},
956
957#include "specs.h"
958 /* Mark end of table. */
959 {0, 0, 0}
960};
961
962/* Number of elements in default_compilers, not counting the terminator. */
963
964static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
965
966/* A vector of options to give to the linker.
967 These options are accumulated by %x,
968 and substituted into the linker command with %X. */
969static int n_linker_options;
970static char **linker_options;
971
972/* A vector of options to give to the assembler.
973 These options are accumulated by -Wa,
974 and substituted into the assembler command with %Y. */
975static int n_assembler_options;
976static char **assembler_options;
977
978/* A vector of options to give to the preprocessor.
979 These options are accumulated by -Wp,
980 and substituted into the preprocessor command with %Z. */
981static int n_preprocessor_options;
982static char **preprocessor_options;
983
984/* Define how to map long options into short ones. */
985
986/* This structure describes one mapping. */
987struct option_map
988{
989 /* The long option's name. */
990 const char *const name;
991 /* The equivalent short option. */
992 const char *const equivalent;
993 /* Argument info. A string of flag chars; NULL equals no options.
994 a => argument required.
995 o => argument optional.
996 j => join argument to equivalent, making one word.
997 * => require other text after NAME as an argument. */
998 const char *const arg_info;
999};
1000
1001/* This is the table of mappings. Mappings are tried sequentially
1002 for each option encountered; the first one that matches, wins. */
1003
1004static const struct option_map option_map[] =
1005 {
1006 {"--all-warnings", "-Wall", 0},
1007 {"--ansi", "-ansi", 0},
1008 {"--assemble", "-S", 0},
1009 {"--assert", "-A", "a"},
1010 {"--classpath", "-fclasspath=", "aj"},
1011 {"--bootclasspath", "-fbootclasspath=", "aj"},
1012 {"--CLASSPATH", "-fclasspath=", "aj"},
1013 {"--comments", "-C", 0},
1014 {"--comments-in-macros", "-CC", 0},
1015 {"--compile", "-c", 0},
1016 {"--debug", "-g", "oj"},
1017 {"--define-macro", "-D", "aj"},
1018 {"--dependencies", "-M", 0},
1019 {"--dump", "-d", "a"},
1020 {"--dumpbase", "-dumpbase", "a"},
1021 {"--entry", "-e", 0},
1022 {"--extra-warnings", "-W", 0},
1023 {"--for-assembler", "-Wa", "a"},
1024 {"--for-linker", "-Xlinker", "a"},
1025 {"--force-link", "-u", "a"},
1026 {"--imacros", "-imacros", "a"},
1027 {"--include", "-include", "a"},
1028 {"--include-barrier", "-I-", 0},
1029 {"--include-directory", "-I", "aj"},
1030 {"--include-directory-after", "-idirafter", "a"},
1031 {"--include-prefix", "-iprefix", "a"},
1032 {"--include-with-prefix", "-iwithprefix", "a"},
1033 {"--include-with-prefix-before", "-iwithprefixbefore", "a"},
1034 {"--include-with-prefix-after", "-iwithprefix", "a"},
1035 {"--language", "-x", "a"},
1036 {"--library-directory", "-L", "a"},
1037 {"--machine", "-m", "aj"},
1038 {"--machine-", "-m", "*j"},
1039 {"--no-integrated-cpp", "-no-integrated-cpp", 0},
1040 {"--no-line-commands", "-P", 0},
1041 {"--no-precompiled-includes", "-noprecomp", 0},
1042 {"--no-standard-includes", "-nostdinc", 0},
1043 {"--no-standard-libraries", "-nostdlib", 0},
1044 {"--no-warnings", "-w", 0},
1045 {"--optimize", "-O", "oj"},
1046 {"--output", "-o", "a"},
1047 {"--output-class-directory", "-foutput-class-dir=", "ja"},
1048 {"--param", "--param", "a"},
1049 {"--pedantic", "-pedantic", 0},
1050 {"--pedantic-errors", "-pedantic-errors", 0},
1051 {"--pie", "-pie", 0},
1052 {"--pipe", "-pipe", 0},
1053 {"--prefix", "-B", "a"},
1054 {"--preprocess", "-E", 0},
1055 {"--print-search-dirs", "-print-search-dirs", 0},
1056 {"--print-file-name", "-print-file-name=", "aj"},
1057 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0},
1058 {"--print-missing-file-dependencies", "-MG", 0},
1059 {"--print-multi-lib", "-print-multi-lib", 0},
1060 {"--print-multi-directory", "-print-multi-directory", 0},
1061 {"--print-multi-os-directory", "-print-multi-os-directory", 0},
1062 {"--print-prog-name", "-print-prog-name=", "aj"},
1063 {"--profile", "-p", 0},
1064 {"--profile-blocks", "-a", 0},
1065 {"--quiet", "-q", 0},
1066 {"--resource", "-fcompile-resource=", "aj"},
1067 {"--save-temps", "-save-temps", 0},
1068 {"--shared", "-shared", 0},
1069 {"--silent", "-q", 0},
1070 {"--specs", "-specs=", "aj"},
1071 {"--static", "-static", 0},
1072 {"--std", "-std=", "aj"},
1073 {"--symbolic", "-symbolic", 0},
1074 {"--time", "-time", 0},
1075 {"--trace-includes", "-H", 0},
1076 {"--traditional", "-traditional", 0},
1077 {"--traditional-cpp", "-traditional-cpp", 0},
1078 {"--trigraphs", "-trigraphs", 0},
1079 {"--undefine-macro", "-U", "aj"},
1080 {"--user-dependencies", "-MM", 0},
1081 {"--verbose", "-v", 0},
1082 {"--warn-", "-W", "*j"},
1083 {"--write-dependencies", "-MD", 0},
1084 {"--write-user-dependencies", "-MMD", 0},
1085 {"--", "-f", "*j"}
1086 };
1087
1088
1089#ifdef TARGET_OPTION_TRANSLATE_TABLE
1090static const struct {
1091 const char *const option_found;
1092 const char *const replacements;
1093} target_option_translations[] =
1094{
1095 TARGET_OPTION_TRANSLATE_TABLE,
1096 { 0, 0 }
1097};
1098#endif
1099
1100/* Translate the options described by *ARGCP and *ARGVP.
1101 Make a new vector and store it back in *ARGVP,
1102 and store its length in *ARGVC. */
1103
1104static void
1105translate_options (int *argcp, const char *const **argvp)
1106{
1107 int i;
1108 int argc = *argcp;
1109 const char *const *argv = *argvp;
1110 int newvsize = (argc + 2) * 2 * sizeof (const char *);
1111 const char **newv = xmalloc (newvsize);
1112 int newindex = 0;
1113
1114 i = 0;
1115 newv[newindex++] = argv[i++];
1116
1117 while (i < argc)
1118 {
1119#ifdef TARGET_OPTION_TRANSLATE_TABLE
1120 int tott_idx;
1121
1122 for (tott_idx = 0;
1123 target_option_translations[tott_idx].option_found;
1124 tott_idx++)
1125 {
1126 if (strcmp (target_option_translations[tott_idx].option_found,
1127 argv[i]) == 0)
1128 {
1129 int spaces = 1;
1130 const char *sp;
1131 char *np;
1132
1133 for (sp = target_option_translations[tott_idx].replacements;
1134 *sp; sp++)
1135 {
1136 if (*sp == ' ')
1137 spaces ++;
1138 }
1139
1140 newvsize += spaces * sizeof (const char *);
1141 newv = xrealloc (newv, newvsize);
1142
1143 sp = target_option_translations[tott_idx].replacements;
1144 np = xstrdup (sp);
1145
1146 while (1)
1147 {
1148 while (*np == ' ')
1149 np++;
1150 if (*np == 0)
1151 break;
1152 newv[newindex++] = np;
1153 while (*np != ' ' && *np)
1154 np++;
1155 if (*np == 0)
1156 break;
1157 *np++ = 0;
1158 }
1159
1160 i ++;
1161 break;
1162 }
1163 }
1164 if (target_option_translations[tott_idx].option_found)
1165 continue;
1166#endif
1167
1168 /* Translate -- options. */
1169 if (argv[i][0] == '-' && argv[i][1] == '-')
1170 {
1171 size_t j;
1172 /* Find a mapping that applies to this option. */
1173 for (j = 0; j < ARRAY_SIZE (option_map); j++)
1174 {
1175 size_t optlen = strlen (option_map[j].name);
1176 size_t arglen = strlen (argv[i]);
1177 size_t complen = arglen > optlen ? optlen : arglen;
1178 const char *arginfo = option_map[j].arg_info;
1179
1180 if (arginfo == 0)
1181 arginfo = "";
1182
1183 if (!strncmp (argv[i], option_map[j].name, complen))
1184 {
1185 const char *arg = 0;
1186
1187 if (arglen < optlen)
1188 {
1189 size_t k;
1190 for (k = j + 1; k < ARRAY_SIZE (option_map); k++)
1191 if (strlen (option_map[k].name) >= arglen
1192 && !strncmp (argv[i], option_map[k].name, arglen))
1193 {
1194 error ("ambiguous abbreviation %s", argv[i]);
1195 break;
1196 }
1197
1198 if (k != ARRAY_SIZE (option_map))
1199 break;
1200 }
1201
1202 if (arglen > optlen)
1203 {
1204 /* If the option has an argument, accept that. */
1205 if (argv[i][optlen] == '=')
1206 arg = argv[i] + optlen + 1;
1207
1208 /* If this mapping requires extra text at end of name,
1209 accept that as "argument". */
1210 else if (strchr (arginfo, '*') != 0)
1211 arg = argv[i] + optlen;
1212
1213 /* Otherwise, extra text at end means mismatch.
1214 Try other mappings. */
1215 else
1216 continue;
1217 }
1218
1219 else if (strchr (arginfo, '*') != 0)
1220 {
1221 error ("incomplete `%s' option", option_map[j].name);
1222 break;
1223 }
1224
1225 /* Handle arguments. */
1226 if (strchr (arginfo, 'a') != 0)
1227 {
1228 if (arg == 0)
1229 {
1230 if (i + 1 == argc)
1231 {
1232 error ("missing argument to `%s' option",
1233 option_map[j].name);
1234 break;
1235 }
1236
1237 arg = argv[++i];
1238 }
1239 }
1240 else if (strchr (arginfo, '*') != 0)
1241 ;
1242 else if (strchr (arginfo, 'o') == 0)
1243 {
1244 if (arg != 0)
1245 error ("extraneous argument to `%s' option",
1246 option_map[j].name);
1247 arg = 0;
1248 }
1249
1250 /* Store the translation as one argv elt or as two. */
1251 if (arg != 0 && strchr (arginfo, 'j') != 0)
1252 newv[newindex++] = concat (option_map[j].equivalent, arg,
1253 NULL);
1254 else if (arg != 0)
1255 {
1256 newv[newindex++] = option_map[j].equivalent;
1257 newv[newindex++] = arg;
1258 }
1259 else
1260 newv[newindex++] = option_map[j].equivalent;
1261
1262 break;
1263 }
1264 }
1265 i++;
1266 }
1267
1268 /* Handle old-fashioned options--just copy them through,
1269 with their arguments. */
1270 else if (argv[i][0] == '-')
1271 {
1272 const char *p = argv[i] + 1;
1273 int c = *p;
1274 int nskip = 1;
1275
1276 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
1277 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0);
1278 else if (WORD_SWITCH_TAKES_ARG (p))
1279 nskip += WORD_SWITCH_TAKES_ARG (p);
1280 else if ((c == 'B' || c == 'b' || c == 'x')
1281 && p[1] == 0)
1282 nskip += 1;
1283 else if (! strcmp (p, "Xlinker"))
1284 nskip += 1;
1285 else if (! strcmp (p, "Xpreprocessor"))
1286 nskip += 1;
1287 else if (! strcmp (p, "Xassembler"))
1288 nskip += 1;
1289
1290 /* Watch out for an option at the end of the command line that
1291 is missing arguments, and avoid skipping past the end of the
1292 command line. */
1293 if (nskip + i > argc)
1294 nskip = argc - i;
1295
1296 while (nskip > 0)
1297 {
1298 newv[newindex++] = argv[i++];
1299 nskip--;
1300 }
1301 }
1302 else
1303 /* Ordinary operands, or +e options. */
1304 newv[newindex++] = argv[i++];
1305 }
1306
1307 newv[newindex] = 0;
1308
1309 *argvp = newv;
1310 *argcp = newindex;
1311}
1312
1313static char *
1314skip_whitespace (char *p)
1315{
1316 while (1)
1317 {
1318 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1319 be considered whitespace. */
1320 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1321 return p + 1;
1322 else if (*p == '\n' || *p == ' ' || *p == '\t')
1323 p++;
1324 else if (*p == '#')
1325 {
1326 while (*p != '\n')
1327 p++;
1328 p++;
1329 }
1330 else
1331 break;
1332 }
1333
1334 return p;
1335}
1336/* Structures to keep track of prefixes to try when looking for files. */
1337
1338struct prefix_list
1339{
1340 const char *prefix; /* String to prepend to the path. */
1341 struct prefix_list *next; /* Next in linked list. */
1342 int require_machine_suffix; /* Don't use without machine_suffix. */
1343 /* 2 means try both machine_suffix and just_machine_suffix. */
1344 int *used_flag_ptr; /* 1 if a file was found with this prefix. */
1345 int priority; /* Sort key - priority within list. */
1346 int os_multilib; /* 1 if OS multilib scheme should be used,
1347 0 for GCC multilib scheme. */
1348};
1349
1350struct path_prefix
1351{
1352 struct prefix_list *plist; /* List of prefixes to try */
1353 int max_len; /* Max length of a prefix in PLIST */
1354 const char *name; /* Name of this list (used in config stuff) */
1355};
1356
1357/* List of prefixes to try when looking for executables. */
1358
1359static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1360
1361/* List of prefixes to try when looking for startup (crt0) files. */
1362
1363static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1364
1365/* List of prefixes to try when looking for include files. */
1366
1367static struct path_prefix include_prefixes = { 0, 0, "include" };
1368
1369/* Suffix to attach to directories searched for commands.
1370 This looks like `MACHINE/VERSION/'. */
1371
1372static const char *machine_suffix = 0;
1373
1374/* Suffix to attach to directories searched for commands.
1375 This is just `MACHINE/'. */
1376
1377static const char *just_machine_suffix = 0;
1378
1379/* Adjusted value of GCC_EXEC_PREFIX envvar. */
1380
1381static const char *gcc_exec_prefix;
1382
1383/* Adjusted value of standard_libexec_prefix. */
1384
1385static const char *gcc_libexec_prefix;
1386
1387/* Default prefixes to attach to command names. */
1388
1389#ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */
1390#undef MD_EXEC_PREFIX
1391#undef MD_STARTFILE_PREFIX
1392#undef MD_STARTFILE_PREFIX_1
1393#endif
1394
1395/* If no prefixes defined, use the null string, which will disable them. */
1396#ifndef MD_EXEC_PREFIX
1397#define MD_EXEC_PREFIX ""
1398#endif
1399#ifndef MD_STARTFILE_PREFIX
1400#define MD_STARTFILE_PREFIX ""
1401#endif
1402#ifndef MD_STARTFILE_PREFIX_1
1403#define MD_STARTFILE_PREFIX_1 ""
1404#endif
1405
1406static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1407static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/";
1408static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/";
1409static const char *md_exec_prefix = MD_EXEC_PREFIX;
1410
1411static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1412static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1413static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1414static const char *const standard_startfile_prefix_1 = "/lib/";
1415static const char *const standard_startfile_prefix_2 = "/usr/lib/";
1416
1417static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1418static const char *tooldir_prefix;
1419
1420#ifndef FREEBSD_NATIVE
1421static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1422#endif /* not FREEBSD_NATIVE */
1423
1424static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1425
1426/* Subdirectory to use for locating libraries. Set by
1427 set_multilib_dir based on the compilation options. */
1428
1429static const char *multilib_dir;
1430
1431/* Subdirectory to use for locating libraries in OS conventions. Set by
1432 set_multilib_dir based on the compilation options. */
1433
1434static const char *multilib_os_dir;
1435
1436/* Structure to keep track of the specs that have been defined so far.
1437 These are accessed using %(specname) or %[specname] in a compiler
1438 or link spec. */
1439
1440struct spec_list
1441{
1442 /* The following 2 fields must be first */
1443 /* to allow EXTRA_SPECS to be initialized */
1444 const char *name; /* name of the spec. */
1445 const char *ptr; /* available ptr if no static pointer */
1446
1447 /* The following fields are not initialized */
1448 /* by EXTRA_SPECS */
1449 const char **ptr_spec; /* pointer to the spec itself. */
1450 struct spec_list *next; /* Next spec in linked list. */
1451 int name_len; /* length of the name */
1452 int alloc_p; /* whether string was allocated */
1453};
1454
1455#define INIT_STATIC_SPEC(NAME,PTR) \
1456{ NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1457
1458/* List of statically defined specs. */
1459static struct spec_list static_specs[] =
1460{
1461 INIT_STATIC_SPEC ("asm", &asm_spec),
1462 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1463 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1464 INIT_STATIC_SPEC ("asm_options", &asm_options),
1465 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1466 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1467 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1468 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1469 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1470 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1471 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1472 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1473 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1474 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1475 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1476 INIT_STATIC_SPEC ("link", &link_spec),
1477 INIT_STATIC_SPEC ("lib", &lib_spec),
1478 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1479 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1480 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces),
1481 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1482 INIT_STATIC_SPEC ("version", &compiler_version),
1483 INIT_STATIC_SPEC ("multilib", &multilib_select),
1484 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1485 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1486 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1487 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1488 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1489 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1490 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1491 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1492 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1493 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1494 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1495 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1496 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1497};
1498
1499#ifdef EXTRA_SPECS /* additional specs needed */
1500/* Structure to keep track of just the first two args of a spec_list.
1501 That is all that the EXTRA_SPECS macro gives us. */
1502struct spec_list_1
1503{
1504 const char *const name;
1505 const char *const ptr;
1506};
1507
1508static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1509static struct spec_list *extra_specs = (struct spec_list *) 0;
1510#endif
1511
1512/* List of dynamically allocates specs that have been defined so far. */
1513
1514static struct spec_list *specs = (struct spec_list *) 0;
1515
1516/* List of static spec functions. */
1517
1518static const struct spec_function static_spec_functions[] =
1519{
1520 { "if-exists", if_exists_spec_function },
1521 { "if-exists-else", if_exists_else_spec_function },
1522 { 0, 0 }
1523};
1524
1525static int processing_spec_function;
1526
1527/* Add appropriate libgcc specs to OBSTACK, taking into account
1528 various permutations of -shared-libgcc, -shared, and such. */
1529
1530#ifdef ENABLE_SHARED_LIBGCC
1531static void
1532init_gcc_specs (struct obstack *obstack, const char *shared_name,
1533 const char *static_name, const char *eh_name)
1534{
1535 char *buf;
1536
1537 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name,
1538 "}%{!static:%{!static-libgcc:",
1539#ifdef HAVE_LD_AS_NEEDED
1540 "%{!shared-libgcc:", static_name,
1541 " --as-needed ", shared_name, " --no-as-needed}"
1542 "%{shared-libgcc:", shared_name, "%{!shared: ", static_name,
1543 "}",
1544#else
1545 "%{!shared:%{!shared-libgcc:", static_name, " ",
1546 eh_name, "}%{shared-libgcc:", shared_name, " ",
1547 static_name, "}}%{shared:",
1548#ifdef LINK_EH_SPEC
1549 "%{shared-libgcc:", shared_name,
1550 "}%{!shared-libgcc:", static_name, "}",
1551#else
1552 shared_name,
1553#endif
1554#endif
1555 "}}}", NULL);
1556
1557 obstack_grow (obstack, buf, strlen (buf));
1558 free (buf);
1559}
1560#endif /* ENABLE_SHARED_LIBGCC */
1561
1562/* Initialize the specs lookup routines. */
1563
1564static void
1565init_spec (void)
1566{
1567 struct spec_list *next = (struct spec_list *) 0;
1568 struct spec_list *sl = (struct spec_list *) 0;
1569 int i;
1570
1571 if (specs)
1572 return; /* Already initialized. */
1573
1574 if (verbose_flag)
1575 notice ("Using built-in specs.\n");
1576
1577#ifdef EXTRA_SPECS
1578 extra_specs = xcalloc (sizeof (struct spec_list),
1579 ARRAY_SIZE (extra_specs_1));
1580
1581 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1582 {
1583 sl = &extra_specs[i];
1584 sl->name = extra_specs_1[i].name;
1585 sl->ptr = extra_specs_1[i].ptr;
1586 sl->next = next;
1587 sl->name_len = strlen (sl->name);
1588 sl->ptr_spec = &sl->ptr;
1589 next = sl;
1590 }
1591#endif
1592
1593 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
1594 on ?: in file-scope variable initializations. */
1595 asm_debug = ASM_DEBUG_SPEC;
1596
1597 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1598 {
1599 sl = &static_specs[i];
1600 sl->next = next;
1601 next = sl;
1602 }
1603
1604#ifdef ENABLE_SHARED_LIBGCC
1605 /* ??? If neither -shared-libgcc nor --static-libgcc was
1606 seen, then we should be making an educated guess. Some proposed
1607 heuristics for ELF include:
1608
1609 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1610 program will be doing dynamic loading, which will likely
1611 need the shared libgcc.
1612
1613 (2) If "-ldl", then it's also a fair bet that we're doing
1614 dynamic loading.
1615
1616 (3) For each ET_DYN we're linking against (either through -lfoo
1617 or /some/path/foo.so), check to see whether it or one of
1618 its dependencies depends on a shared libgcc.
1619
1620 (4) If "-shared"
1621
1622 If the runtime is fixed to look for program headers instead
1623 of calling __register_frame_info at all, for each object,
1624 use the shared libgcc if any EH symbol referenced.
1625
1626 If crtstuff is fixed to not invoke __register_frame_info
1627 automatically, for each object, use the shared libgcc if
1628 any non-empty unwind section found.
1629
1630 Doing any of this probably requires invoking an external program to
1631 do the actual object file scanning. */
1632 {
1633 const char *p = libgcc_spec;
1634 int in_sep = 1;
1635
1636 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1637 when given the proper command line arguments. */
1638 while (*p)
1639 {
1640 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1641 {
1642 init_gcc_specs (&obstack,
1643#ifdef NO_SHARED_LIBGCC_MULTILIB
1644 "-lgcc_s"
1645#else
1646 "-lgcc_s%M"
1647#endif
|
1660#endif
1661 );
1662
1663 p += 5;
1664 in_sep = 0;
1665 }
1666 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1667 {
1668 /* Ug. We don't know shared library extensions. Hope that
1669 systems that use this form don't do shared libraries. */
1670 init_gcc_specs (&obstack,
1671#ifdef NO_SHARED_LIBGCC_MULTILIB
1672 "-lgcc_s"
1673#else
1674 "-lgcc_s%M"
1675#endif
1676 ,
1677 "libgcc.a%s",
1678 "libgcc_eh.a%s"
1679#ifdef USE_LIBUNWIND_EXCEPTIONS
1680 " -lunwind"
1681#endif
1682 );
1683 p += 10;
1684 in_sep = 0;
1685 }
1686 else
1687 {
1688 obstack_1grow (&obstack, *p);
1689 in_sep = (*p == ' ');
1690 p += 1;
1691 }
1692 }
1693
1694 obstack_1grow (&obstack, '\0');
1695 libgcc_spec = obstack_finish (&obstack);
1696 }
1697#endif
1698#ifdef USE_AS_TRADITIONAL_FORMAT
1699 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1700 {
1701 static const char tf[] = "--traditional-format ";
1702 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1703 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1704 asm_spec = obstack_finish (&obstack);
1705 }
1706#endif
1707#ifdef LINK_EH_SPEC
1708 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1709 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1710 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1711 link_spec = obstack_finish (&obstack);
1712#endif
1713
1714 specs = sl;
1715}
1716
1717/* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1718 removed; If the spec starts with a + then SPEC is added to the end of the
1719 current spec. */
1720
1721static void
1722set_spec (const char *name, const char *spec)
1723{
1724 struct spec_list *sl;
1725 const char *old_spec;
1726 int name_len = strlen (name);
1727 int i;
1728
1729 /* If this is the first call, initialize the statically allocated specs. */
1730 if (!specs)
1731 {
1732 struct spec_list *next = (struct spec_list *) 0;
1733 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1734 {
1735 sl = &static_specs[i];
1736 sl->next = next;
1737 next = sl;
1738 }
1739 specs = sl;
1740 }
1741
1742 /* See if the spec already exists. */
1743 for (sl = specs; sl; sl = sl->next)
1744 if (name_len == sl->name_len && !strcmp (sl->name, name))
1745 break;
1746
1747 if (!sl)
1748 {
1749 /* Not found - make it. */
1750 sl = xmalloc (sizeof (struct spec_list));
1751 sl->name = xstrdup (name);
1752 sl->name_len = name_len;
1753 sl->ptr_spec = &sl->ptr;
1754 sl->alloc_p = 0;
1755 *(sl->ptr_spec) = "";
1756 sl->next = specs;
1757 specs = sl;
1758 }
1759
1760 old_spec = *(sl->ptr_spec);
1761 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1762 ? concat (old_spec, spec + 1, NULL)
1763 : xstrdup (spec));
1764
1765#ifdef DEBUG_SPECS
1766 if (verbose_flag)
1767 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1768#endif
1769
1770 /* Free the old spec. */
1771 if (old_spec && sl->alloc_p)
1772 free ((void *) old_spec);
1773
1774 sl->alloc_p = 1;
1775}
1776
1777/* Accumulate a command (program name and args), and run it. */
1778
1779/* Vector of pointers to arguments in the current line of specifications. */
1780
1781static const char **argbuf;
1782
1783/* Number of elements allocated in argbuf. */
1784
1785static int argbuf_length;
1786
1787/* Number of elements in argbuf currently in use (containing args). */
1788
1789static int argbuf_index;
1790
1791/* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1792 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1793 it here. */
1794
1795static struct temp_name {
1796 const char *suffix; /* suffix associated with the code. */
1797 int length; /* strlen (suffix). */
1798 int unique; /* Indicates whether %g or %u/%U was used. */
1799 const char *filename; /* associated filename. */
1800 int filename_length; /* strlen (filename). */
1801 struct temp_name *next;
1802} *temp_names;
1803
1804/* Number of commands executed so far. */
1805
1806static int execution_count;
1807
1808/* Number of commands that exited with a signal. */
1809
1810static int signal_count;
1811
1812/* Name with which this program was invoked. */
1813
1814static const char *programname;
1815
1816/* Allocate the argument vector. */
1817
1818static void
1819alloc_args (void)
1820{
1821 argbuf_length = 10;
1822 argbuf = xmalloc (argbuf_length * sizeof (const char *));
1823}
1824
1825/* Clear out the vector of arguments (after a command is executed). */
1826
1827static void
1828clear_args (void)
1829{
1830 argbuf_index = 0;
1831}
1832
1833/* Add one argument to the vector at the end.
1834 This is done when a space is seen or at the end of the line.
1835 If DELETE_ALWAYS is nonzero, the arg is a filename
1836 and the file should be deleted eventually.
1837 If DELETE_FAILURE is nonzero, the arg is a filename
1838 and the file should be deleted if this compilation fails. */
1839
1840static void
1841store_arg (const char *arg, int delete_always, int delete_failure)
1842{
1843 if (argbuf_index + 1 == argbuf_length)
1844 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *));
1845
1846 argbuf[argbuf_index++] = arg;
1847 argbuf[argbuf_index] = 0;
1848
1849 if (delete_always || delete_failure)
1850 record_temp_file (arg, delete_always, delete_failure);
1851}
1852
1853/* Load specs from a file name named FILENAME, replacing occurrences of
1854 various different types of line-endings, \r\n, \n\r and just \r, with
1855 a single \n. */
1856
1857static char *
1858load_specs (const char *filename)
1859{
1860 int desc;
1861 int readlen;
1862 struct stat statbuf;
1863 char *buffer;
1864 char *buffer_p;
1865 char *specs;
1866 char *specs_p;
1867
1868 if (verbose_flag)
1869 notice ("Reading specs from %s\n", filename);
1870
1871 /* Open and stat the file. */
1872 desc = open (filename, O_RDONLY, 0);
1873 if (desc < 0)
1874 pfatal_with_name (filename);
1875 if (stat (filename, &statbuf) < 0)
1876 pfatal_with_name (filename);
1877
1878 /* Read contents of file into BUFFER. */
1879 buffer = xmalloc ((unsigned) statbuf.st_size + 1);
1880 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1881 if (readlen < 0)
1882 pfatal_with_name (filename);
1883 buffer[readlen] = 0;
1884 close (desc);
1885
1886 specs = xmalloc (readlen + 1);
1887 specs_p = specs;
1888 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1889 {
1890 int skip = 0;
1891 char c = *buffer_p;
1892 if (c == '\r')
1893 {
1894 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1895 skip = 1;
1896 else if (*(buffer_p + 1) == '\n') /* \r\n */
1897 skip = 1;
1898 else /* \r */
1899 c = '\n';
1900 }
1901 if (! skip)
1902 *specs_p++ = c;
1903 }
1904 *specs_p = '\0';
1905
1906 free (buffer);
1907 return (specs);
1908}
1909
1910/* Read compilation specs from a file named FILENAME,
1911 replacing the default ones.
1912
1913 A suffix which starts with `*' is a definition for
1914 one of the machine-specific sub-specs. The "suffix" should be
1915 *asm, *cc1, *cpp, *link, *startfile, etc.
1916 The corresponding spec is stored in asm_spec, etc.,
1917 rather than in the `compilers' vector.
1918
1919 Anything invalid in the file is a fatal error. */
1920
1921static void
1922read_specs (const char *filename, int main_p)
1923{
1924 char *buffer;
1925 char *p;
1926
1927 buffer = load_specs (filename);
1928
1929 /* Scan BUFFER for specs, putting them in the vector. */
1930 p = buffer;
1931 while (1)
1932 {
1933 char *suffix;
1934 char *spec;
1935 char *in, *out, *p1, *p2, *p3;
1936
1937 /* Advance P in BUFFER to the next nonblank nocomment line. */
1938 p = skip_whitespace (p);
1939 if (*p == 0)
1940 break;
1941
1942 /* Is this a special command that starts with '%'? */
1943 /* Don't allow this for the main specs file, since it would
1944 encourage people to overwrite it. */
1945 if (*p == '%' && !main_p)
1946 {
1947 p1 = p;
1948 while (*p && *p != '\n')
1949 p++;
1950
1951 /* Skip '\n'. */
1952 p++;
1953
1954 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1955 && (p1[sizeof "%include" - 1] == ' '
1956 || p1[sizeof "%include" - 1] == '\t'))
1957 {
1958 char *new_filename;
1959
1960 p1 += sizeof ("%include");
1961 while (*p1 == ' ' || *p1 == '\t')
1962 p1++;
1963
1964 if (*p1++ != '<' || p[-2] != '>')
1965 fatal ("specs %%include syntax malformed after %ld characters",
1966 (long) (p1 - buffer + 1));
1967
1968 p[-2] = '\0';
1969 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1970 read_specs (new_filename ? new_filename : p1, FALSE);
1971 continue;
1972 }
1973 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1974 && (p1[sizeof "%include_noerr" - 1] == ' '
1975 || p1[sizeof "%include_noerr" - 1] == '\t'))
1976 {
1977 char *new_filename;
1978
1979 p1 += sizeof "%include_noerr";
1980 while (*p1 == ' ' || *p1 == '\t')
1981 p1++;
1982
1983 if (*p1++ != '<' || p[-2] != '>')
1984 fatal ("specs %%include syntax malformed after %ld characters",
1985 (long) (p1 - buffer + 1));
1986
1987 p[-2] = '\0';
1988 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, 0);
1989 if (new_filename)
1990 read_specs (new_filename, FALSE);
1991 else if (verbose_flag)
1992 notice ("could not find specs file %s\n", p1);
1993 continue;
1994 }
1995 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1996 && (p1[sizeof "%rename" - 1] == ' '
1997 || p1[sizeof "%rename" - 1] == '\t'))
1998 {
1999 int name_len;
2000 struct spec_list *sl;
2001 struct spec_list *newsl;
2002
2003 /* Get original name. */
2004 p1 += sizeof "%rename";
2005 while (*p1 == ' ' || *p1 == '\t')
2006 p1++;
2007
2008 if (! ISALPHA ((unsigned char) *p1))
2009 fatal ("specs %%rename syntax malformed after %ld characters",
2010 (long) (p1 - buffer));
2011
2012 p2 = p1;
2013 while (*p2 && !ISSPACE ((unsigned char) *p2))
2014 p2++;
2015
2016 if (*p2 != ' ' && *p2 != '\t')
2017 fatal ("specs %%rename syntax malformed after %ld characters",
2018 (long) (p2 - buffer));
2019
2020 name_len = p2 - p1;
2021 *p2++ = '\0';
2022 while (*p2 == ' ' || *p2 == '\t')
2023 p2++;
2024
2025 if (! ISALPHA ((unsigned char) *p2))
2026 fatal ("specs %%rename syntax malformed after %ld characters",
2027 (long) (p2 - buffer));
2028
2029 /* Get new spec name. */
2030 p3 = p2;
2031 while (*p3 && !ISSPACE ((unsigned char) *p3))
2032 p3++;
2033
2034 if (p3 != p - 1)
2035 fatal ("specs %%rename syntax malformed after %ld characters",
2036 (long) (p3 - buffer));
2037 *p3 = '\0';
2038
2039 for (sl = specs; sl; sl = sl->next)
2040 if (name_len == sl->name_len && !strcmp (sl->name, p1))
2041 break;
2042
2043 if (!sl)
2044 fatal ("specs %s spec was not found to be renamed", p1);
2045
2046 if (strcmp (p1, p2) == 0)
2047 continue;
2048
2049 for (newsl = specs; newsl; newsl = newsl->next)
2050 if (strcmp (newsl->name, p2) == 0)
2051 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'",
2052 filename, p1, p2);
2053
2054 if (verbose_flag)
2055 {
2056 notice ("rename spec %s to %s\n", p1, p2);
2057#ifdef DEBUG_SPECS
2058 notice ("spec is '%s'\n\n", *(sl->ptr_spec));
2059#endif
2060 }
2061
2062 set_spec (p2, *(sl->ptr_spec));
2063 if (sl->alloc_p)
2064 free ((void *) *(sl->ptr_spec));
2065
2066 *(sl->ptr_spec) = "";
2067 sl->alloc_p = 0;
2068 continue;
2069 }
2070 else
2071 fatal ("specs unknown %% command after %ld characters",
2072 (long) (p1 - buffer));
2073 }
2074
2075 /* Find the colon that should end the suffix. */
2076 p1 = p;
2077 while (*p1 && *p1 != ':' && *p1 != '\n')
2078 p1++;
2079
2080 /* The colon shouldn't be missing. */
2081 if (*p1 != ':')
2082 fatal ("specs file malformed after %ld characters",
2083 (long) (p1 - buffer));
2084
2085 /* Skip back over trailing whitespace. */
2086 p2 = p1;
2087 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
2088 p2--;
2089
2090 /* Copy the suffix to a string. */
2091 suffix = save_string (p, p2 - p);
2092 /* Find the next line. */
2093 p = skip_whitespace (p1 + 1);
2094 if (p[1] == 0)
2095 fatal ("specs file malformed after %ld characters",
2096 (long) (p - buffer));
2097
2098 p1 = p;
2099 /* Find next blank line or end of string. */
2100 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
2101 p1++;
2102
2103 /* Specs end at the blank line and do not include the newline. */
2104 spec = save_string (p, p1 - p);
2105 p = p1;
2106
2107 /* Delete backslash-newline sequences from the spec. */
2108 in = spec;
2109 out = spec;
2110 while (*in != 0)
2111 {
2112 if (in[0] == '\\' && in[1] == '\n')
2113 in += 2;
2114 else if (in[0] == '#')
2115 while (*in && *in != '\n')
2116 in++;
2117
2118 else
2119 *out++ = *in++;
2120 }
2121 *out = 0;
2122
2123 if (suffix[0] == '*')
2124 {
2125 if (! strcmp (suffix, "*link_command"))
2126 link_command_spec = spec;
2127 else
2128 set_spec (suffix + 1, spec);
2129 }
2130 else
2131 {
2132 /* Add this pair to the vector. */
2133 compilers
2134 = xrealloc (compilers,
2135 (n_compilers + 2) * sizeof (struct compiler));
2136
2137 compilers[n_compilers].suffix = suffix;
2138 compilers[n_compilers].spec = spec;
2139 n_compilers++;
2140 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
2141 }
2142
2143 if (*suffix == 0)
2144 link_command_spec = spec;
2145 }
2146
2147 if (link_command_spec == 0)
2148 fatal ("spec file has no spec for linking");
2149}
2150
2151/* Record the names of temporary files we tell compilers to write,
2152 and delete them at the end of the run. */
2153
2154/* This is the common prefix we use to make temp file names.
2155 It is chosen once for each run of this program.
2156 It is substituted into a spec by %g or %j.
2157 Thus, all temp file names contain this prefix.
2158 In practice, all temp file names start with this prefix.
2159
2160 This prefix comes from the envvar TMPDIR if it is defined;
2161 otherwise, from the P_tmpdir macro if that is defined;
2162 otherwise, in /usr/tmp or /tmp;
2163 or finally the current directory if all else fails. */
2164
2165static const char *temp_filename;
2166
2167/* Length of the prefix. */
2168
2169static int temp_filename_length;
2170
2171/* Define the list of temporary files to delete. */
2172
2173struct temp_file
2174{
2175 const char *name;
2176 struct temp_file *next;
2177};
2178
2179/* Queue of files to delete on success or failure of compilation. */
2180static struct temp_file *always_delete_queue;
2181/* Queue of files to delete on failure of compilation. */
2182static struct temp_file *failure_delete_queue;
2183
2184/* Record FILENAME as a file to be deleted automatically.
2185 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
2186 otherwise delete it in any case.
2187 FAIL_DELETE nonzero means delete it if a compilation step fails;
2188 otherwise delete it in any case. */
2189
2190void
2191record_temp_file (const char *filename, int always_delete, int fail_delete)
2192{
2193 char *const name = xstrdup (filename);
2194
2195 if (always_delete)
2196 {
2197 struct temp_file *temp;
2198 for (temp = always_delete_queue; temp; temp = temp->next)
2199 if (! strcmp (name, temp->name))
2200 goto already1;
2201
2202 temp = xmalloc (sizeof (struct temp_file));
2203 temp->next = always_delete_queue;
2204 temp->name = name;
2205 always_delete_queue = temp;
2206
2207 already1:;
2208 }
2209
2210 if (fail_delete)
2211 {
2212 struct temp_file *temp;
2213 for (temp = failure_delete_queue; temp; temp = temp->next)
2214 if (! strcmp (name, temp->name))
2215 goto already2;
2216
2217 temp = xmalloc (sizeof (struct temp_file));
2218 temp->next = failure_delete_queue;
2219 temp->name = name;
2220 failure_delete_queue = temp;
2221
2222 already2:;
2223 }
2224}
2225
2226/* Delete all the temporary files whose names we previously recorded. */
2227
2228static void
2229delete_if_ordinary (const char *name)
2230{
2231 struct stat st;
2232#ifdef DEBUG
2233 int i, c;
2234
2235 printf ("Delete %s? (y or n) ", name);
2236 fflush (stdout);
2237 i = getchar ();
2238 if (i != '\n')
2239 while ((c = getchar ()) != '\n' && c != EOF)
2240 ;
2241
2242 if (i == 'y' || i == 'Y')
2243#endif /* DEBUG */
2244 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode))
2245 if (unlink (name) < 0)
2246 if (verbose_flag)
2247 perror_with_name (name);
2248}
2249
2250static void
2251delete_temp_files (void)
2252{
2253 struct temp_file *temp;
2254
2255 for (temp = always_delete_queue; temp; temp = temp->next)
2256 delete_if_ordinary (temp->name);
2257 always_delete_queue = 0;
2258}
2259
2260/* Delete all the files to be deleted on error. */
2261
2262static void
2263delete_failure_queue (void)
2264{
2265 struct temp_file *temp;
2266
2267 for (temp = failure_delete_queue; temp; temp = temp->next)
2268 delete_if_ordinary (temp->name);
2269}
2270
2271static void
2272clear_failure_queue (void)
2273{
2274 failure_delete_queue = 0;
2275}
2276
2277/* Build a list of search directories from PATHS.
2278 PREFIX is a string to prepend to the list.
2279 If CHECK_DIR_P is nonzero we ensure the directory exists.
2280 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2281 It is also used by the --print-search-dirs flag. */
2282
2283static char *
2284build_search_list (struct path_prefix *paths, const char *prefix,
2285 int check_dir_p)
2286{
2287 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0;
2288 int just_suffix_len
2289 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0;
2290 int first_time = TRUE;
2291 struct prefix_list *pprefix;
2292
2293 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2294 obstack_1grow (&collect_obstack, '=');
2295
2296 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next)
2297 {
2298 int len = strlen (pprefix->prefix);
2299
2300 if (machine_suffix
2301 && (! check_dir_p
2302 || is_directory (pprefix->prefix, machine_suffix, 0)))
2303 {
2304 if (!first_time)
2305 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2306
2307 first_time = FALSE;
2308 obstack_grow (&collect_obstack, pprefix->prefix, len);
2309 obstack_grow (&collect_obstack, machine_suffix, suffix_len);
2310 }
2311
2312 if (just_machine_suffix
2313 && pprefix->require_machine_suffix == 2
2314 && (! check_dir_p
2315 || is_directory (pprefix->prefix, just_machine_suffix, 0)))
2316 {
2317 if (! first_time)
2318 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2319
2320 first_time = FALSE;
2321 obstack_grow (&collect_obstack, pprefix->prefix, len);
2322 obstack_grow (&collect_obstack, just_machine_suffix,
2323 just_suffix_len);
2324 }
2325
2326 if (! pprefix->require_machine_suffix)
2327 {
2328 if (! first_time)
2329 obstack_1grow (&collect_obstack, PATH_SEPARATOR);
2330
2331 first_time = FALSE;
2332 obstack_grow (&collect_obstack, pprefix->prefix, len);
2333 }
2334 }
2335
2336 obstack_1grow (&collect_obstack, '\0');
2337 return obstack_finish (&collect_obstack);
2338}
2339
2340/* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2341 for collect. */
2342
2343static void
2344putenv_from_prefixes (struct path_prefix *paths, const char *env_var)
2345{
2346 putenv (build_search_list (paths, env_var, 1));
2347}
2348
2349/* Check whether NAME can be accessed in MODE. This is like access,
2350 except that it never considers directories to be executable. */
2351
2352static int
2353access_check (const char *name, int mode)
2354{
2355 if (mode == X_OK)
2356 {
2357 struct stat st;
2358
2359 if (stat (name, &st) < 0
2360 || S_ISDIR (st.st_mode))
2361 return -1;
2362 }
2363
2364 return access (name, mode);
2365}
2366
2367/* Search for NAME using the prefix list PREFIXES. MODE is passed to
2368 access to check permissions.
2369 Return 0 if not found, otherwise return its name, allocated with malloc. */
2370
2371static char *
2372find_a_file (struct path_prefix *pprefix, const char *name, int mode,
2373 int multilib)
2374{
2375 char *temp;
2376 const char *const file_suffix =
2377 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "");
2378 struct prefix_list *pl;
2379 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1;
2380 const char *multilib_name, *multilib_os_name;
2381
2382#ifdef DEFAULT_ASSEMBLER
2383 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2384 return xstrdup (DEFAULT_ASSEMBLER);
2385#endif
2386
2387#ifdef DEFAULT_LINKER
2388 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2389 return xstrdup (DEFAULT_LINKER);
2390#endif
2391
2392 if (machine_suffix)
2393 len += strlen (machine_suffix);
2394
2395 multilib_name = name;
2396 multilib_os_name = name;
2397 if (multilib && multilib_os_dir)
2398 {
2399 int len1 = multilib_dir ? strlen (multilib_dir) + 1 : 0;
2400 int len2 = strlen (multilib_os_dir) + 1;
2401
2402 len += len1 > len2 ? len1 : len2;
2403 if (multilib_dir)
2404 multilib_name = ACONCAT ((multilib_dir, dir_separator_str, name,
2405 NULL));
2406 if (strcmp (multilib_os_dir, ".") != 0)
2407 multilib_os_name = ACONCAT ((multilib_os_dir, dir_separator_str, name,
2408 NULL));
2409 }
2410
2411 temp = xmalloc (len);
2412
2413 /* Determine the filename to execute (special case for absolute paths). */
2414
2415 if (IS_ABSOLUTE_PATH (name))
2416 {
2417 if (access (name, mode) == 0)
2418 {
2419 strcpy (temp, name);
2420 return temp;
2421 }
2422 }
2423 else
2424 for (pl = pprefix->plist; pl; pl = pl->next)
2425 {
2426 const char *this_name
2427 = pl->os_multilib ? multilib_os_name : multilib_name;
2428
2429 if (machine_suffix)
2430 {
2431 /* Some systems have a suffix for executable files.
2432 So try appending that first. */
2433 if (file_suffix[0] != 0)
2434 {
2435 strcpy (temp, pl->prefix);
2436 strcat (temp, machine_suffix);
2437 strcat (temp, multilib_name);
2438 strcat (temp, file_suffix);
2439 if (access_check (temp, mode) == 0)
2440 {
2441 if (pl->used_flag_ptr != 0)
2442 *pl->used_flag_ptr = 1;
2443 return temp;
2444 }
2445 }
2446
2447 /* Now try just the multilib_name. */
2448 strcpy (temp, pl->prefix);
2449 strcat (temp, machine_suffix);
2450 strcat (temp, multilib_name);
2451 if (access_check (temp, mode) == 0)
2452 {
2453 if (pl->used_flag_ptr != 0)
2454 *pl->used_flag_ptr = 1;
2455 return temp;
2456 }
2457 }
2458
2459 /* Certain prefixes are tried with just the machine type,
2460 not the version. This is used for finding as, ld, etc. */
2461 if (just_machine_suffix && pl->require_machine_suffix == 2)
2462 {
2463 /* Some systems have a suffix for executable files.
2464 So try appending that first. */
2465 if (file_suffix[0] != 0)
2466 {
2467 strcpy (temp, pl->prefix);
2468 strcat (temp, just_machine_suffix);
2469 strcat (temp, multilib_name);
2470 strcat (temp, file_suffix);
2471 if (access_check (temp, mode) == 0)
2472 {
2473 if (pl->used_flag_ptr != 0)
2474 *pl->used_flag_ptr = 1;
2475 return temp;
2476 }
2477 }
2478
2479 strcpy (temp, pl->prefix);
2480 strcat (temp, just_machine_suffix);
2481 strcat (temp, multilib_name);
2482 if (access_check (temp, mode) == 0)
2483 {
2484 if (pl->used_flag_ptr != 0)
2485 *pl->used_flag_ptr = 1;
2486 return temp;
2487 }
2488 }
2489
2490 /* Certain prefixes can't be used without the machine suffix
2491 when the machine or version is explicitly specified. */
2492 if (! pl->require_machine_suffix)
2493 {
2494 /* Some systems have a suffix for executable files.
2495 So try appending that first. */
2496 if (file_suffix[0] != 0)
2497 {
2498 strcpy (temp, pl->prefix);
2499 strcat (temp, this_name);
2500 strcat (temp, file_suffix);
2501 if (access_check (temp, mode) == 0)
2502 {
2503 if (pl->used_flag_ptr != 0)
2504 *pl->used_flag_ptr = 1;
2505 return temp;
2506 }
2507 }
2508
2509 strcpy (temp, pl->prefix);
2510 strcat (temp, this_name);
2511 if (access_check (temp, mode) == 0)
2512 {
2513 if (pl->used_flag_ptr != 0)
2514 *pl->used_flag_ptr = 1;
2515 return temp;
2516 }
2517 }
2518 }
2519
2520 free (temp);
2521 return 0;
2522}
2523
2524/* Ranking of prefixes in the sort list. -B prefixes are put before
2525 all others. */
2526
2527enum path_prefix_priority
2528{
2529 PREFIX_PRIORITY_B_OPT,
2530 PREFIX_PRIORITY_LAST
2531};
2532
2533/* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2534 order according to PRIORITY. Within each PRIORITY, new entries are
2535 appended.
2536
2537 If WARN is nonzero, we will warn if no file is found
2538 through this prefix. WARN should point to an int
2539 which will be set to 1 if this entry is used.
2540
2541 COMPONENT is the value to be passed to update_path.
2542
2543 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2544 the complete value of machine_suffix.
2545 2 means try both machine_suffix and just_machine_suffix. */
2546
2547static void
2548add_prefix (struct path_prefix *pprefix, const char *prefix,
2549 const char *component, /* enum prefix_priority */ int priority,
2550 int require_machine_suffix, int *warn, int os_multilib)
2551{
2552 struct prefix_list *pl, **prev;
2553 int len;
2554
2555 for (prev = &pprefix->plist;
2556 (*prev) != NULL && (*prev)->priority <= priority;
2557 prev = &(*prev)->next)
2558 ;
2559
2560 /* Keep track of the longest prefix. */
2561
2562 prefix = update_path (prefix, component);
2563 len = strlen (prefix);
2564 if (len > pprefix->max_len)
2565 pprefix->max_len = len;
2566
2567 pl = xmalloc (sizeof (struct prefix_list));
2568 pl->prefix = prefix;
2569 pl->require_machine_suffix = require_machine_suffix;
2570 pl->used_flag_ptr = warn;
2571 pl->priority = priority;
2572 pl->os_multilib = os_multilib;
2573 if (warn)
2574 *warn = 0;
2575
2576 /* Insert after PREV. */
2577 pl->next = (*prev);
2578 (*prev) = pl;
2579}
2580
2581/* Same as add_prefix, but prepending target_system_root to prefix. */
2582static void
2583add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2584 const char *component,
2585 /* enum prefix_priority */ int priority,
2586 int require_machine_suffix, int *warn, int os_multilib)
2587{
2588 if (!IS_ABSOLUTE_PATH (prefix))
2589 abort ();
2590
2591 if (target_system_root)
2592 {
2593 if (target_sysroot_suffix)
2594 prefix = concat (target_sysroot_suffix, prefix, NULL);
2595 prefix = concat (target_system_root, prefix, NULL);
2596
2597 /* We have to override this because GCC's notion of sysroot
2598 moves along with GCC. */
2599 component = "GCC";
2600 }
2601
2602 add_prefix (pprefix, prefix, component, priority,
2603 require_machine_suffix, warn, os_multilib);
2604}
2605
2606/* Execute the command specified by the arguments on the current line of spec.
2607 When using pipes, this includes several piped-together commands
2608 with `|' between them.
2609
2610 Return 0 if successful, -1 if failed. */
2611
2612static int
2613execute (void)
2614{
2615 int i;
2616 int n_commands; /* # of command. */
2617 char *string;
2618 struct command
2619 {
2620 const char *prog; /* program name. */
2621 const char **argv; /* vector of args. */
2622 int pid; /* pid of process for this command. */
2623 };
2624
2625 struct command *commands; /* each command buffer with above info. */
2626
2627 if (processing_spec_function)
2628 abort ();
2629
2630 /* Count # of piped commands. */
2631 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2632 if (strcmp (argbuf[i], "|") == 0)
2633 n_commands++;
2634
2635 /* Get storage for each command. */
2636 commands = alloca (n_commands * sizeof (struct command));
2637
2638 /* Split argbuf into its separate piped processes,
2639 and record info about each one.
2640 Also search for the programs that are to be run. */
2641
2642 commands[0].prog = argbuf[0]; /* first command. */
2643 commands[0].argv = &argbuf[0];
2644 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, 0);
2645
2646 if (string)
2647 commands[0].argv[0] = string;
2648
2649 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2650 if (strcmp (argbuf[i], "|") == 0)
2651 { /* each command. */
2652#if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2653 fatal ("-pipe not supported");
2654#endif
2655 argbuf[i] = 0; /* termination of command args. */
2656 commands[n_commands].prog = argbuf[i + 1];
2657 commands[n_commands].argv = &argbuf[i + 1];
2658 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2659 X_OK, 0);
2660 if (string)
2661 commands[n_commands].argv[0] = string;
2662 n_commands++;
2663 }
2664
2665 argbuf[argbuf_index] = 0;
2666
2667 /* If -v, print what we are about to do, and maybe query. */
2668
2669 if (verbose_flag)
2670 {
2671 /* For help listings, put a blank line between sub-processes. */
2672 if (print_help_list)
2673 fputc ('\n', stderr);
2674
2675 /* Print each piped command as a separate line. */
2676 for (i = 0; i < n_commands; i++)
2677 {
2678 const char *const *j;
2679
2680 if (verbose_only_flag)
2681 {
2682 for (j = commands[i].argv; *j; j++)
2683 {
2684 const char *p;
2685 fprintf (stderr, " \"");
2686 for (p = *j; *p; ++p)
2687 {
2688 if (*p == '"' || *p == '\\' || *p == '$')
2689 fputc ('\\', stderr);
2690 fputc (*p, stderr);
2691 }
2692 fputc ('"', stderr);
2693 }
2694 }
2695 else
2696 for (j = commands[i].argv; *j; j++)
2697 fprintf (stderr, " %s", *j);
2698
2699 /* Print a pipe symbol after all but the last command. */
2700 if (i + 1 != n_commands)
2701 fprintf (stderr, " |");
2702 fprintf (stderr, "\n");
2703 }
2704 fflush (stderr);
2705 if (verbose_only_flag != 0)
2706 {
2707 /* verbose_only_flag should act as if the spec was
2708 executed, so increment execution_count before
2709 returning. This prevents spurious warnings about
2710 unused linker input files, etc. */
2711 execution_count++;
2712 return 0;
2713 }
2714#ifdef DEBUG
2715 notice ("\nGo ahead? (y or n) ");
2716 fflush (stderr);
2717 i = getchar ();
2718 if (i != '\n')
2719 while (getchar () != '\n')
2720 ;
2721
2722 if (i != 'y' && i != 'Y')
2723 return 0;
2724#endif /* DEBUG */
2725 }
2726
2727#ifdef ENABLE_VALGRIND_CHECKING
2728 /* Run the each command through valgrind. To simplify prepending the
2729 path to valgrind and the option "-q" (for quiet operation unless
2730 something triggers), we allocate a separate argv array. */
2731
2732 for (i = 0; i < n_commands; i++)
2733 {
2734 const char **argv;
2735 int argc;
2736 int j;
2737
2738 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2739 ;
2740
2741 argv = alloca ((argc + 3) * sizeof (char *));
2742
2743 argv[0] = VALGRIND_PATH;
2744 argv[1] = "-q";
2745 for (j = 2; j < argc + 2; j++)
2746 argv[j] = commands[i].argv[j - 2];
2747 argv[j] = NULL;
2748
2749 commands[i].argv = argv;
2750 commands[i].prog = argv[0];
2751 }
2752#endif
2753
2754 /* Run each piped subprocess. */
2755
2756 for (i = 0; i < n_commands; i++)
2757 {
2758 char *errmsg_fmt, *errmsg_arg;
2759 const char *string = commands[i].argv[0];
2760
2761 /* For some bizarre reason, the second argument of execvp() is
2762 char *const *, not const char *const *. */
2763 commands[i].pid = pexecute (string, (char *const *) commands[i].argv,
2764 programname, temp_filename,
2765 &errmsg_fmt, &errmsg_arg,
2766 ((i == 0 ? PEXECUTE_FIRST : 0)
2767 | (i + 1 == n_commands ? PEXECUTE_LAST : 0)
2768 | (string == commands[i].prog
2769 ? PEXECUTE_SEARCH : 0)
2770 | (verbose_flag ? PEXECUTE_VERBOSE : 0)));
2771
2772 if (commands[i].pid == -1)
2773 pfatal_pexecute (errmsg_fmt, errmsg_arg);
2774
2775 if (string != commands[i].prog)
2776 free ((void *) string);
2777 }
2778
2779 execution_count++;
2780
2781 /* Wait for all the subprocesses to finish.
2782 We don't care what order they finish in;
2783 we know that N_COMMANDS waits will get them all.
2784 Ignore subprocesses that we don't know about,
2785 since they can be spawned by the process that exec'ed us. */
2786
2787 {
2788 int ret_code = 0;
2789#ifdef HAVE_GETRUSAGE
2790 struct timeval d;
2791 double ut = 0.0, st = 0.0;
2792#endif
2793
2794 for (i = 0; i < n_commands;)
2795 {
2796 int j;
2797 int status;
2798 int pid;
2799
2800 pid = pwait (commands[i].pid, &status, 0);
2801 if (pid < 0)
2802 abort ();
2803
2804#ifdef HAVE_GETRUSAGE
2805 if (report_times)
2806 {
2807 /* getrusage returns the total resource usage of all children
2808 up to now. Copy the previous values into prus, get the
2809 current statistics, then take the difference. */
2810
2811 prus = rus;
2812 getrusage (RUSAGE_CHILDREN, &rus);
2813 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec;
2814 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec;
2815 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2816
2817 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec;
2818 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec;
2819 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6;
2820 }
2821#endif
2822
2823 for (j = 0; j < n_commands; j++)
2824 if (commands[j].pid == pid)
2825 {
2826 i++;
2827 if (WIFSIGNALED (status))
2828 {
2829#ifdef SIGPIPE
2830 /* SIGPIPE is a special case. It happens in -pipe mode
2831 when the compiler dies before the preprocessor is
2832 done, or the assembler dies before the compiler is
2833 done. There's generally been an error already, and
2834 this is just fallout. So don't generate another error
2835 unless we would otherwise have succeeded. */
2836 if (WTERMSIG (status) == SIGPIPE
2837 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2838 ;
2839 else
2840#endif
2841 fatal ("\
2842Internal error: %s (program %s)\n\
2843Please submit a full bug report.\n\
2844See %s for instructions.",
2845 strsignal (WTERMSIG (status)), commands[j].prog,
2846 bug_report_url);
2847 signal_count++;
2848 ret_code = -1;
2849 }
2850 else if (WIFEXITED (status)
2851 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2852 {
2853 if (WEXITSTATUS (status) > greatest_status)
2854 greatest_status = WEXITSTATUS (status);
2855 ret_code = -1;
2856 }
2857#ifdef HAVE_GETRUSAGE
2858 if (report_times && ut + st != 0)
2859 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st);
2860#endif
2861 break;
2862 }
2863 }
2864 return ret_code;
2865 }
2866}
2867
2868/* Find all the switches given to us
2869 and make a vector describing them.
2870 The elements of the vector are strings, one per switch given.
2871 If a switch uses following arguments, then the `part1' field
2872 is the switch itself and the `args' field
2873 is a null-terminated vector containing the following arguments.
2874 The `live_cond' field is:
2875 0 when initialized
2876 1 if the switch is true in a conditional spec,
2877 -1 if false (overridden by a later switch)
2878 -2 if this switch should be ignored (used in %<S)
2879 The `validated' field is nonzero if any spec has looked at this switch;
2880 if it remains zero at the end of the run, it must be meaningless. */
2881
2882#define SWITCH_OK 0
2883#define SWITCH_FALSE -1
2884#define SWITCH_IGNORE -2
2885#define SWITCH_LIVE 1
2886
2887struct switchstr
2888{
2889 const char *part1;
2890 const char **args;
2891 int live_cond;
2892 unsigned char validated;
2893 unsigned char ordering;
2894};
2895
2896static struct switchstr *switches;
2897
2898static int n_switches;
2899
2900struct infile
2901{
2902 const char *name;
2903 const char *language;
2904};
2905
2906/* Also a vector of input files specified. */
2907
2908static struct infile *infiles;
2909
2910int n_infiles;
2911
2912/* True if multiple input files are being compiled to a single
2913 assembly file. */
2914
2915static bool combine_inputs;
2916
2917/* This counts the number of libraries added by lang_specific_driver, so that
2918 we can tell if there were any user supplied any files or libraries. */
2919
2920static int added_libraries;
2921
2922/* And a vector of corresponding output files is made up later. */
2923
2924const char **outfiles;
2925
2926/* Used to track if none of the -B paths are used. */
2927static int warn_B;
2928
2929/* Gives value to pass as "warn" to add_prefix for standard prefixes. */
2930static int *warn_std_ptr = 0;
2931
2932#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2933
2934/* Convert NAME to a new name if it is the standard suffix. DO_EXE
2935 is true if we should look for an executable suffix. DO_OBJ
2936 is true if we should look for an object suffix. */
2937
2938static const char *
2939convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2940 int do_obj ATTRIBUTE_UNUSED)
2941{
2942#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2943 int i;
2944#endif
2945 int len;
2946
2947 if (name == NULL)
2948 return NULL;
2949
2950 len = strlen (name);
2951
2952#ifdef HAVE_TARGET_OBJECT_SUFFIX
2953 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2954 if (do_obj && len > 2
2955 && name[len - 2] == '.'
2956 && name[len - 1] == 'o')
2957 {
2958 obstack_grow (&obstack, name, len - 2);
2959 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2960 name = obstack_finish (&obstack);
2961 }
2962#endif
2963
2964#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2965 /* If there is no filetype, make it the executable suffix (which includes
2966 the "."). But don't get confused if we have just "-o". */
2967 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2968 return name;
2969
2970 for (i = len - 1; i >= 0; i--)
2971 if (IS_DIR_SEPARATOR (name[i]))
2972 break;
2973
2974 for (i++; i < len; i++)
2975 if (name[i] == '.')
2976 return name;
2977
2978 obstack_grow (&obstack, name, len);
2979 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2980 strlen (TARGET_EXECUTABLE_SUFFIX));
2981 name = obstack_finish (&obstack);
2982#endif
2983
2984 return name;
2985}
2986#endif
2987
2988/* Display the command line switches accepted by gcc. */
2989static void
2990display_help (void)
2991{
2992 printf (_("Usage: %s [options] file...\n"), programname);
2993 fputs (_("Options:\n"), stdout);
2994
2995 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2996 fputs (_(" --help Display this information\n"), stdout);
2997 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2998 if (! verbose_flag)
2999 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
3000 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
3001 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
3002 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
3003 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
3004 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
3005 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
3006 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
3007 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
3008 fputs (_("\
3009 -print-multi-lib Display the mapping between command line options and\n\
3010 multiple library search directories\n"), stdout);
3011 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
3012 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
3013 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
3014 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
3015 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
3016 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
3017 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
3018 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
3019 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
3020 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
3021 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
3022 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
3023 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
3024 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
3025 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
3026 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
3027 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
3028 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
3029 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
3030 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
3031 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
3032 fputs (_("\
3033 -x <language> Specify the language of the following input files\n\
3034 Permissible languages include: c c++ assembler none\n\
3035 'none' means revert to the default behavior of\n\
3036 guessing the language based on the file's extension\n\
3037"), stdout);
3038
3039 printf (_("\
3040\nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
3041 passed on to the various sub-processes invoked by %s. In order to pass\n\
3042 other options on to these processes the -W<letter> options must be used.\n\
3043"), programname);
3044
3045 /* The rest of the options are displayed by invocations of the various
3046 sub-processes. */
3047}
3048
3049static void
3050add_preprocessor_option (const char *option, int len)
3051{
3052 n_preprocessor_options++;
3053
3054 if (! preprocessor_options)
3055 preprocessor_options = xmalloc (n_preprocessor_options * sizeof (char *));
3056 else
3057 preprocessor_options = xrealloc (preprocessor_options,
3058 n_preprocessor_options * sizeof (char *));
3059
3060 preprocessor_options [n_preprocessor_options - 1] =
3061 save_string (option, len);
3062}
3063
3064static void
3065add_assembler_option (const char *option, int len)
3066{
3067 n_assembler_options++;
3068
3069 if (! assembler_options)
3070 assembler_options = xmalloc (n_assembler_options * sizeof (char *));
3071 else
3072 assembler_options = xrealloc (assembler_options,
3073 n_assembler_options * sizeof (char *));
3074
3075 assembler_options [n_assembler_options - 1] = save_string (option, len);
3076}
3077
3078static void
3079add_linker_option (const char *option, int len)
3080{
3081 n_linker_options++;
3082
3083 if (! linker_options)
3084 linker_options = xmalloc (n_linker_options * sizeof (char *));
3085 else
3086 linker_options = xrealloc (linker_options,
3087 n_linker_options * sizeof (char *));
3088
3089 linker_options [n_linker_options - 1] = save_string (option, len);
3090}
3091
3092/* Create the vector `switches' and its contents.
3093 Store its length in `n_switches'. */
3094
3095static void
3096process_command (int argc, const char **argv)
3097{
3098 int i;
3099 const char *temp;
3100 char *temp1;
3101 const char *spec_lang = 0;
3102 int last_language_n_infiles;
3103 int have_c = 0;
3104 int have_o = 0;
3105 int lang_n_infiles = 0;
3106#ifdef MODIFY_TARGET_NAME
3107 int is_modify_target_name;
3108 int j;
3109#endif
3110
3111 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3112
3113 n_switches = 0;
3114 n_infiles = 0;
3115 added_libraries = 0;
3116
3117 /* Figure compiler version from version string. */
3118
3119 compiler_version = temp1 = xstrdup (version_string);
3120
3121 for (; *temp1; ++temp1)
3122 {
3123 if (*temp1 == ' ')
3124 {
3125 *temp1 = '\0';
3126 break;
3127 }
3128 }
3129
3130 /* If there is a -V or -b option (or both), process it now, before
3131 trying to interpret the rest of the command line. */
3132 if (argc > 1 && argv[1][0] == '-'
3133 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3134 {
3135 const char *new_version = DEFAULT_TARGET_VERSION;
3136 const char *new_machine = DEFAULT_TARGET_MACHINE;
3137 const char *progname = argv[0];
3138 char **new_argv;
3139 char *new_argv0;
3140 int baselen;
3141
3142 while (argc > 1 && argv[1][0] == '-'
3143 && (argv[1][1] == 'V' || argv[1][1] == 'b'))
3144 {
3145 char opt = argv[1][1];
3146 const char *arg;
3147 if (argv[1][2] != '\0')
3148 {
3149 arg = argv[1] + 2;
3150 argc -= 1;
3151 argv += 1;
3152 }
3153 else if (argc > 2)
3154 {
3155 arg = argv[2];
3156 argc -= 2;
3157 argv += 2;
3158 }
3159 else
3160 fatal ("`-%c' option must have argument", opt);
3161 if (opt == 'V')
3162 new_version = arg;
3163 else
3164 new_machine = arg;
3165 }
3166
3167 for (baselen = strlen (progname); baselen > 0; baselen--)
3168 if (IS_DIR_SEPARATOR (progname[baselen-1]))
3169 break;
3170 new_argv0 = xmemdup (progname, baselen,
3171 baselen + concat_length (new_version, new_machine,
3172 "-gcc-", NULL) + 1);
3173 strcpy (new_argv0 + baselen, new_machine);
3174 strcat (new_argv0, "-gcc-");
3175 strcat (new_argv0, new_version);
3176
3177 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]),
3178 (argc + 1) * sizeof (argv[0]));
3179 new_argv[0] = new_argv0;
3180
3181 execvp (new_argv0, new_argv);
3182 fatal ("couldn't run `%s': %s", new_argv0, xstrerror (errno));
3183 }
3184
3185 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3186 see if we can create it from the pathname specified in argv[0]. */
3187
3188 gcc_libexec_prefix = standard_libexec_prefix;
3189#ifndef FREEBSD_NATIVE
3190#ifndef VMS
3191 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3192 if (!gcc_exec_prefix)
3193 {
3194 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix,
3195 standard_exec_prefix);
3196 gcc_libexec_prefix = make_relative_prefix (argv[0],
3197 standard_bindir_prefix,
3198 standard_libexec_prefix);
3199 if (gcc_exec_prefix)
3200 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3201 }
3202 else
3203 gcc_libexec_prefix = make_relative_prefix (gcc_exec_prefix,
3204 standard_exec_prefix,
3205 standard_libexec_prefix);
3206#else
3207#endif
3208#endif /* not FREEBSD_NATIVE */
3209
3210 if (gcc_exec_prefix)
3211 {
3212 int len = strlen (gcc_exec_prefix);
3213
3214 if (len > (int) sizeof ("/lib/gcc/") - 1
3215 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3216 {
3217 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3218 if (IS_DIR_SEPARATOR (*temp)
3219 && strncmp (temp + 1, "lib", 3) == 0
3220 && IS_DIR_SEPARATOR (temp[4])
3221 && strncmp (temp + 5, "gcc", 3) == 0)
3222 len -= sizeof ("/lib/gcc/") - 1;
3223 }
3224
3225 set_std_prefix (gcc_exec_prefix, len);
3226 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3227 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3228 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3229 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3230 }
3231
3232 /* COMPILER_PATH and LIBRARY_PATH have values
3233 that are lists of directory names with colons. */
3234
3235 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3236 if (temp)
3237 {
3238 const char *startp, *endp;
3239 char *nstore = alloca (strlen (temp) + 3);
3240
3241 startp = endp = temp;
3242 while (1)
3243 {
3244 if (*endp == PATH_SEPARATOR || *endp == 0)
3245 {
3246 strncpy (nstore, startp, endp - startp);
3247 if (endp == startp)
3248 strcpy (nstore, concat (".", dir_separator_str, NULL));
3249 else if (!IS_DIR_SEPARATOR (endp[-1]))
3250 {
3251 nstore[endp - startp] = DIR_SEPARATOR;
3252 nstore[endp - startp + 1] = 0;
3253 }
3254 else
3255 nstore[endp - startp] = 0;
3256 add_prefix (&exec_prefixes, nstore, 0,
3257 PREFIX_PRIORITY_LAST, 0, NULL, 0);
3258 add_prefix (&include_prefixes,
3259 concat (nstore, "include", NULL),
3260 0, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3261 if (*endp == 0)
3262 break;
3263 endp = startp = endp + 1;
3264 }
3265 else
3266 endp++;
3267 }
3268 }
3269
3270 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3271 if (temp && *cross_compile == '0')
3272 {
3273 const char *startp, *endp;
3274 char *nstore = alloca (strlen (temp) + 3);
3275
3276 startp = endp = temp;
3277 while (1)
3278 {
3279 if (*endp == PATH_SEPARATOR || *endp == 0)
3280 {
3281 strncpy (nstore, startp, endp - startp);
3282 if (endp == startp)
3283 strcpy (nstore, concat (".", dir_separator_str, NULL));
3284 else if (!IS_DIR_SEPARATOR (endp[-1]))
3285 {
3286 nstore[endp - startp] = DIR_SEPARATOR;
3287 nstore[endp - startp + 1] = 0;
3288 }
3289 else
3290 nstore[endp - startp] = 0;
3291 add_prefix (&startfile_prefixes, nstore, NULL,
3292 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3293 if (*endp == 0)
3294 break;
3295 endp = startp = endp + 1;
3296 }
3297 else
3298 endp++;
3299 }
3300 }
3301
3302 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3303 GET_ENVIRONMENT (temp, "LPATH");
3304 if (temp && *cross_compile == '0')
3305 {
3306 const char *startp, *endp;
3307 char *nstore = alloca (strlen (temp) + 3);
3308
3309 startp = endp = temp;
3310 while (1)
3311 {
3312 if (*endp == PATH_SEPARATOR || *endp == 0)
3313 {
3314 strncpy (nstore, startp, endp - startp);
3315 if (endp == startp)
3316 strcpy (nstore, concat (".", dir_separator_str, NULL));
3317 else if (!IS_DIR_SEPARATOR (endp[-1]))
3318 {
3319 nstore[endp - startp] = DIR_SEPARATOR;
3320 nstore[endp - startp + 1] = 0;
3321 }
3322 else
3323 nstore[endp - startp] = 0;
3324 add_prefix (&startfile_prefixes, nstore, NULL,
3325 PREFIX_PRIORITY_LAST, 0, NULL, 1);
3326 if (*endp == 0)
3327 break;
3328 endp = startp = endp + 1;
3329 }
3330 else
3331 endp++;
3332 }
3333 }
3334
3335 /* Options specified as if they appeared on the command line. */
3336 temp = getenv ("GCC_OPTIONS");
3337 if ((temp) && (strlen (temp) > 0))
3338 {
3339 int len;
3340 int optc = 1;
3341 int new_argc;
3342 const char **new_argv;
3343 char *envopts;
3344
3345 while (isspace (*temp))
3346 temp++;
3347 len = strlen (temp);
3348 envopts = (char *) xmalloc (len + 1);
3349 strcpy (envopts, temp);
3350
3351 for (i = 0; i < (len - 1); i++)
3352 if ((isspace (envopts[i])) && ! (isspace (envopts[i+1])))
3353 optc++;
3354
3355 new_argv = (const char **) alloca ((optc + argc) * sizeof(char *));
3356
3357 for (i = 0, new_argc = 1; new_argc <= optc; new_argc++)
3358 {
3359 while (isspace (envopts[i]))
3360 i++;
3361 new_argv[new_argc] = envopts + i;
3362 while (!isspace (envopts[i]) && (envopts[i] != '\0'))
3363 i++;
3364 envopts[i++] = '\0';
3365 }
3366 for (i = 1; i < argc; i++)
3367 new_argv[new_argc++] = argv[i];
3368
3369 argv = new_argv;
3370 argc = new_argc;
3371 }
3372
3373 /* Convert new-style -- options to old-style. */
3374 translate_options (&argc, (const char *const **) &argv);
3375
3376 /* Do language-specific adjustment/addition of flags. */
3377 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries);
3378
3379 /* Scan argv twice. Here, the first time, just count how many switches
3380 there will be in their vector, and how many input files in theirs.
3381 Here we also parse the switches that cc itself uses (e.g. -v). */
3382
3383 for (i = 1; i < argc; i++)
3384 {
3385 if (! strcmp (argv[i], "-dumpspecs"))
3386 {
3387 struct spec_list *sl;
3388 init_spec ();
3389 for (sl = specs; sl; sl = sl->next)
3390 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3391 if (link_command_spec)
3392 printf ("*link_command:\n%s\n\n", link_command_spec);
3393 exit (0);
3394 }
3395 else if (! strcmp (argv[i], "-dumpversion"))
3396 {
3397 printf ("%s\n", spec_version);
3398 exit (0);
3399 }
3400 else if (! strcmp (argv[i], "-dumpmachine"))
3401 {
3402 printf ("%s\n", spec_machine);
3403 exit (0);
3404 }
3405 else if (strcmp (argv[i], "-fversion") == 0)
3406 {
3407 /* translate_options () has turned --version into -fversion. */
3408 printf (_("%s (GCC) %s\n"), programname, version_string);
3409 printf ("Copyright %s 2004 Free Software Foundation, Inc.\n",
3410 _("(C)"));
3411 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
3412warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
3413 stdout);
3414 exit (0);
3415 }
3416 else if (strcmp (argv[i], "-fhelp") == 0)
3417 {
3418 /* translate_options () has turned --help into -fhelp. */
3419 print_help_list = 1;
3420
3421 /* We will be passing a dummy file on to the sub-processes. */
3422 n_infiles++;
3423 n_switches++;
3424
3425 /* CPP driver cannot obtain switch from cc1_options. */
3426 if (is_cpp_driver)
3427 add_preprocessor_option ("--help", 6);
3428 add_assembler_option ("--help", 6);
3429 add_linker_option ("--help", 6);
3430 }
3431 else if (strcmp (argv[i], "-ftarget-help") == 0)
3432 {
3433 /* translate_options() has turned --target-help into -ftarget-help. */
3434 target_help_flag = 1;
3435
3436 /* We will be passing a dummy file on to the sub-processes. */
3437 n_infiles++;
3438 n_switches++;
3439
3440 /* CPP driver cannot obtain switch from cc1_options. */
3441 if (is_cpp_driver)
3442 add_preprocessor_option ("--target-help", 13);
3443 add_assembler_option ("--target-help", 13);
3444 add_linker_option ("--target-help", 13);
3445 }
3446 else if (! strcmp (argv[i], "-pass-exit-codes"))
3447 {
3448 pass_exit_codes = 1;
3449 n_switches++;
3450 }
3451 else if (! strcmp (argv[i], "-print-search-dirs"))
3452 print_search_dirs = 1;
3453 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3454 print_file_name = "libgcc.a";
3455 else if (! strncmp (argv[i], "-print-file-name=", 17))
3456 print_file_name = argv[i] + 17;
3457 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3458 print_prog_name = argv[i] + 17;
3459 else if (! strcmp (argv[i], "-print-multi-lib"))
3460 print_multi_lib = 1;
3461 else if (! strcmp (argv[i], "-print-multi-directory"))
3462 print_multi_directory = 1;
3463 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3464 print_multi_os_directory = 1;
3465 else if (! strncmp (argv[i], "-Wa,", 4))
3466 {
3467 int prev, j;
3468 /* Pass the rest of this option to the assembler. */
3469
3470 /* Split the argument at commas. */
3471 prev = 4;
3472 for (j = 4; argv[i][j]; j++)
3473 if (argv[i][j] == ',')
3474 {
3475 add_assembler_option (argv[i] + prev, j - prev);
3476 prev = j + 1;
3477 }
3478
3479 /* Record the part after the last comma. */
3480 add_assembler_option (argv[i] + prev, j - prev);
3481 }
3482 else if (! strncmp (argv[i], "-Wp,", 4))
3483 {
3484 int prev, j;
3485 /* Pass the rest of this option to the preprocessor. */
3486
3487 /* Split the argument at commas. */
3488 prev = 4;
3489 for (j = 4; argv[i][j]; j++)
3490 if (argv[i][j] == ',')
3491 {
3492 add_preprocessor_option (argv[i] + prev, j - prev);
3493 prev = j + 1;
3494 }
3495
3496 /* Record the part after the last comma. */
3497 add_preprocessor_option (argv[i] + prev, j - prev);
3498 }
3499 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3500 /* The +e options to the C++ front-end. */
3501 n_switches++;
3502 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3503 {
3504 int j;
3505 /* Split the argument at commas. */
3506 for (j = 3; argv[i][j]; j++)
3507 n_infiles += (argv[i][j] == ',');
3508 }
3509 else if (strcmp (argv[i], "-Xlinker") == 0)
3510 {
3511 if (i + 1 == argc)
3512 fatal ("argument to `-Xlinker' is missing");
3513
3514 n_infiles++;
3515 i++;
3516 }
3517 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3518 {
3519 if (i + 1 == argc)
3520 fatal ("argument to `-Xpreprocessor' is missing");
3521
3522 add_preprocessor_option (argv[i+1], strlen (argv[i+1]));
3523 }
3524 else if (strcmp (argv[i], "-Xassembler") == 0)
3525 {
3526 if (i + 1 == argc)
3527 fatal ("argument to `-Xassembler' is missing");
3528
3529 add_assembler_option (argv[i+1], strlen (argv[i+1]));
3530 }
3531 else if (strcmp (argv[i], "-l") == 0)
3532 {
3533 if (i + 1 == argc)
3534 fatal ("argument to `-l' is missing");
3535
3536 n_infiles++;
3537 i++;
3538 }
3539 else if (strncmp (argv[i], "-l", 2) == 0)
3540 n_infiles++;
3541 else if (strcmp (argv[i], "-save-temps") == 0)
3542 {
3543 save_temps_flag = 1;
3544 n_switches++;
3545 }
3546 else if (strcmp (argv[i], "-specs") == 0)
3547 {
3548 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3549 if (++i >= argc)
3550 fatal ("argument to `-specs' is missing");
3551
3552 user->next = (struct user_specs *) 0;
3553 user->filename = argv[i];
3554 if (user_specs_tail)
3555 user_specs_tail->next = user;
3556 else
3557 user_specs_head = user;
3558 user_specs_tail = user;
3559 }
3560 else if (strncmp (argv[i], "-specs=", 7) == 0)
3561 {
3562 struct user_specs *user = xmalloc (sizeof (struct user_specs));
3563 if (strlen (argv[i]) == 7)
3564 fatal ("argument to `-specs=' is missing");
3565
3566 user->next = (struct user_specs *) 0;
3567 user->filename = argv[i] + 7;
3568 if (user_specs_tail)
3569 user_specs_tail->next = user;
3570 else
3571 user_specs_head = user;
3572 user_specs_tail = user;
3573 }
3574 else if (strcmp (argv[i], "-time") == 0)
3575 report_times = 1;
3576 else if (strcmp (argv[i], "-pipe") == 0)
3577 {
3578 /* -pipe has to go into the switches array as well as
3579 setting a flag. */
3580 use_pipes = 1;
3581 n_switches++;
3582 }
3583 else if (strcmp (argv[i], "-###") == 0)
3584 {
3585 /* This is similar to -v except that there is no execution
3586 of the commands and the echoed arguments are quoted. It
3587 is intended for use in shell scripts to capture the
3588 driver-generated command line. */
3589 verbose_only_flag++;
3590 verbose_flag++;
3591 }
3592 else if (argv[i][0] == '-' && argv[i][1] != 0)
3593 {
3594 const char *p = &argv[i][1];
3595 int c = *p;
3596
3597 switch (c)
3598 {
3599 case 'b':
3600 case 'V':
3601 fatal ("`-%c' must come at the start of the command line", c);
3602 break;
3603
3604 case 'B':
3605 {
3606 const char *value;
3607 int len;
3608
3609 if (p[1] == 0 && i + 1 == argc)
3610 fatal ("argument to `-B' is missing");
3611 if (p[1] == 0)
3612 value = argv[++i];
3613 else
3614 value = p + 1;
3615
3616 len = strlen (value);
3617
3618 /* Catch the case where the user has forgotten to append a
3619 directory separator to the path. Note, they may be using
3620 -B to add an executable name prefix, eg "i386-elf-", in
3621 order to distinguish between multiple installations of
3622 GCC in the same directory. Hence we must check to see
3623 if appending a directory separator actually makes a
3624 valid directory name. */
3625 if (! IS_DIR_SEPARATOR (value [len - 1])
3626 && is_directory (value, "", 0))
3627 {
3628 char *tmp = xmalloc (len + 2);
3629 strcpy (tmp, value);
3630 tmp[len] = DIR_SEPARATOR;
3631 tmp[++ len] = 0;
3632 value = tmp;
3633 }
3634
3635 /* As a kludge, if the arg is "[foo/]stageN/", just
3636 add "[foo/]include" to the include prefix. */
3637 if ((len == 7
3638 || (len > 7
3639 && (IS_DIR_SEPARATOR (value[len - 8]))))
3640 && strncmp (value + len - 7, "stage", 5) == 0
3641 && ISDIGIT (value[len - 2])
3642 && (IS_DIR_SEPARATOR (value[len - 1])))
3643 {
3644 if (len == 7)
3645 add_prefix (&include_prefixes, "include", NULL,
3646 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3647 else
3648 {
3649 char * string = xmalloc (len + 1);
3650
3651 strncpy (string, value, len - 7);
3652 strcpy (string + len - 7, "include");
3653 add_prefix (&include_prefixes, string, NULL,
3654 PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3655 }
3656 }
3657
3658 add_prefix (&exec_prefixes, value, NULL,
3659 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3660 add_prefix (&startfile_prefixes, value, NULL,
3661 PREFIX_PRIORITY_B_OPT, 0, &warn_B, 0);
3662 add_prefix (&include_prefixes, concat (value, "include", NULL),
3663 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL, 0);
3664 n_switches++;
3665 }
3666 break;
3667
3668 case 'v': /* Print our subcommands and print versions. */
3669 n_switches++;
3670 /* If they do anything other than exactly `-v', don't set
3671 verbose_flag; rather, continue on to give the error. */
3672 if (p[1] != 0)
3673 break;
3674 verbose_flag++;
3675 break;
3676
3677 case 'S':
3678 case 'c':
3679 if (p[1] == 0)
3680 {
3681 have_c = 1;
3682 n_switches++;
3683 break;
3684 }
3685 goto normal_switch;
3686
3687 case 'o':
3688 have_o = 1;
3689#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
3690 if (! have_c)
3691 {
3692 int skip;
3693
3694 /* Forward scan, just in case -S or -c is specified
3695 after -o. */
3696 int j = i + 1;
3697 if (p[1] == 0)
3698 ++j;
3699 while (j < argc)
3700 {
3701 if (argv[j][0] == '-')
3702 {
3703 if (SWITCH_CURTAILS_COMPILATION (argv[j][1])
3704 && argv[j][2] == 0)
3705 {
3706 have_c = 1;
3707 break;
3708 }
3709 else if ((skip = SWITCH_TAKES_ARG (argv[j][1])))
3710 j += skip - (argv[j][2] != 0);
3711 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1)))
3712 j += skip;
3713 }
3714 j++;
3715 }
3716 }
3717#endif
3718#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3719 if (p[1] == 0)
3720 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0);
3721 else
3722 argv[i] = convert_filename (argv[i], ! have_c, 0);
3723#endif
3724 goto normal_switch;
3725
3726 default:
3727 normal_switch:
3728
3729#ifdef MODIFY_TARGET_NAME
3730 is_modify_target_name = 0;
3731
3732 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3733 if (! strcmp (argv[i], modify_target[j].sw))
3734 {
3735 char *new_name = xmalloc (strlen (modify_target[j].str)
3736 + strlen (spec_machine));
3737 const char *p, *r;
3738 char *q;
3739 int made_addition = 0;
3740
3741 is_modify_target_name = 1;
3742 for (p = spec_machine, q = new_name; *p != 0; )
3743 {
3744 if (modify_target[j].add_del == DELETE
3745 && (! strncmp (q, modify_target[j].str,
3746 strlen (modify_target[j].str))))
3747 p += strlen (modify_target[j].str);
3748 else if (modify_target[j].add_del == ADD
3749 && ! made_addition && *p == '-')
3750 {
3751 for (r = modify_target[j].str; *r != 0; )
3752 *q++ = *r++;
3753 made_addition = 1;
3754 }
3755
3756 *q++ = *p++;
3757 }
3758
3759 spec_machine = new_name;
3760 }
3761
3762 if (is_modify_target_name)
3763 break;
3764#endif
3765
3766 n_switches++;
3767
3768 if (SWITCH_TAKES_ARG (c) > (p[1] != 0))
3769 i += SWITCH_TAKES_ARG (c) - (p[1] != 0);
3770 else if (WORD_SWITCH_TAKES_ARG (p))
3771 i += WORD_SWITCH_TAKES_ARG (p);
3772 }
3773 }
3774 else
3775 {
3776 n_infiles++;
3777 lang_n_infiles++;
3778 }
3779 }
3780
3781 combine_inputs = (have_c && have_o && lang_n_infiles > 1);
3782
3783 if ((save_temps_flag || report_times) && use_pipes)
3784 {
3785 /* -save-temps overrides -pipe, so that temp files are produced */
3786 if (save_temps_flag)
3787 error ("warning: -pipe ignored because -save-temps specified");
3788 /* -time overrides -pipe because we can't get correct stats when
3789 multiple children are running at once. */
3790 else if (report_times)
3791 error ("warning: -pipe ignored because -time specified");
3792
3793 use_pipes = 0;
3794 }
3795
3796 /* Set up the search paths before we go looking for config files. */
3797
3798 /* These come before the md prefixes so that we will find gcc's subcommands
3799 (such as cpp) rather than those of the host system. */
3800 /* Use 2 as fourth arg meaning try just the machine as a suffix,
3801 as well as trying the machine and the version. */
3802#ifdef FREEBSD_NATIVE
3803 add_prefix (&exec_prefixes, PREFIX"/bin/", "BINUTILS",
3804 PREFIX_PRIORITY_LAST, 0, warn_std_ptr, 0);
3805#endif /* FREEBSD_NATIVE */
3806#ifndef OS2
3807 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3808 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3809 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3810 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3811#ifndef FREEBSD_NATIVE
3812 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3813 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3814 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS",
3815 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3816 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS",
3817 PREFIX_PRIORITY_LAST, 2, warn_std_ptr, 0);
3818#endif /* FREEBSD_NATIVE */
3819#endif
3820
3821#ifndef FREEBSD_NATIVE
3822 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3823 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3824 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS",
3825 PREFIX_PRIORITY_LAST, 1, warn_std_ptr, 0);
3826#endif /* not FREEBSD_NATIVE */
3827
3828 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3829 dir_separator_str, NULL);
3830
3831 /* If tooldir is relative, base it on exec_prefixes. A relative
3832 tooldir lets us move the installed tree as a unit.
3833
3834 If GCC_EXEC_PREFIX is defined, then we want to add two relative
3835 directories, so that we can search both the user specified directory
3836 and the standard place. */
3837
3838 if (!IS_ABSOLUTE_PATH (tooldir_prefix))
3839 {
3840 if (gcc_exec_prefix)
3841 {
3842 char *gcc_exec_tooldir_prefix
3843 = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
3844 spec_version, dir_separator_str, tooldir_prefix, NULL);
3845
3846 add_prefix (&exec_prefixes,
3847 concat (gcc_exec_tooldir_prefix, "bin",
3848 dir_separator_str, NULL),
3849 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 0);
3850 add_prefix (&startfile_prefixes,
3851 concat (gcc_exec_tooldir_prefix, "lib",
3852 dir_separator_str, NULL),
3853 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
3854 }
3855
3856 tooldir_prefix = concat (standard_exec_prefix, spec_machine,
3857 dir_separator_str, spec_version,
3858 dir_separator_str, tooldir_prefix, NULL);
3859 }
3860
3861#ifndef FREEBSD_NATIVE
3862 add_prefix (&exec_prefixes,
3863 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3864 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 0);
3865 add_prefix (&startfile_prefixes,
3866 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3867 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
3868
3869#if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3870 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3871 then consider it to relocate with the rest of the GCC installation
3872 if GCC_EXEC_PREFIX is set.
3873 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3874 if (target_system_root && gcc_exec_prefix)
3875 {
3876 char *tmp_prefix = make_relative_prefix (argv[0],
3877 standard_bindir_prefix,
3878 target_system_root);
3879 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3880 {
3881 target_system_root = tmp_prefix;
3882 target_system_root_changed = 1;
3883 }
3884 }
3885#endif
3886#endif /* FREEBSD_NATIVE */
3887
3888 /* More prefixes are enabled in main, after we read the specs file
3889 and determine whether this is cross-compilation or not. */
3890
3891 /* Then create the space for the vectors and scan again. */
3892
3893 switches = xmalloc ((n_switches + 1) * sizeof (struct switchstr));
3894 infiles = xmalloc ((n_infiles + 1) * sizeof (struct infile));
3895 n_switches = 0;
3896 n_infiles = 0;
3897 last_language_n_infiles = -1;
3898
3899 /* This, time, copy the text of each switch and store a pointer
3900 to the copy in the vector of switches.
3901 Store all the infiles in their vector. */
3902
3903 for (i = 1; i < argc; i++)
3904 {
3905 /* Just skip the switches that were handled by the preceding loop. */
3906#ifdef MODIFY_TARGET_NAME
3907 is_modify_target_name = 0;
3908
3909 for (j = 0; j < ARRAY_SIZE (modify_target); j++)
3910 if (! strcmp (argv[i], modify_target[j].sw))
3911 is_modify_target_name = 1;
3912
3913 if (is_modify_target_name)
3914 ;
3915 else
3916#endif
3917 if (! strncmp (argv[i], "-Wa,", 4))
3918 ;
3919 else if (! strncmp (argv[i], "-Wp,", 4))
3920 ;
3921 else if (! strcmp (argv[i], "-pass-exit-codes"))
3922 ;
3923 else if (! strcmp (argv[i], "-print-search-dirs"))
3924 ;
3925 else if (! strcmp (argv[i], "-print-libgcc-file-name"))
3926 ;
3927 else if (! strncmp (argv[i], "-print-file-name=", 17))
3928 ;
3929 else if (! strncmp (argv[i], "-print-prog-name=", 17))
3930 ;
3931 else if (! strcmp (argv[i], "-print-multi-lib"))
3932 ;
3933 else if (! strcmp (argv[i], "-print-multi-directory"))
3934 ;
3935 else if (! strcmp (argv[i], "-print-multi-os-directory"))
3936 ;
3937 else if (! strcmp (argv[i], "-ftarget-help"))
3938 ;
3939 else if (! strcmp (argv[i], "-fhelp"))
3940 ;
3941 else if (argv[i][0] == '+' && argv[i][1] == 'e')
3942 {
3943 /* Compensate for the +e options to the C++ front-end;
3944 they're there simply for cfront call-compatibility. We do
3945 some magic in default_compilers to pass them down properly.
3946 Note we deliberately start at the `+' here, to avoid passing
3947 -e0 or -e1 down into the linker. */
3948 switches[n_switches].part1 = &argv[i][0];
3949 switches[n_switches].args = 0;
3950 switches[n_switches].live_cond = SWITCH_OK;
3951 switches[n_switches].validated = 0;
3952 n_switches++;
3953 }
3954 else if (strncmp (argv[i], "-Wl,", 4) == 0)
3955 {
3956 int prev, j;
3957 /* Split the argument at commas. */
3958 prev = 4;
3959 for (j = 4; argv[i][j]; j++)
3960 if (argv[i][j] == ',')
3961 {
3962 infiles[n_infiles].language = "*";
3963 infiles[n_infiles++].name
3964 = save_string (argv[i] + prev, j - prev);
3965 prev = j + 1;
3966 }
3967 /* Record the part after the last comma. */
3968 infiles[n_infiles].language = "*";
3969 infiles[n_infiles++].name = argv[i] + prev;
3970 }
3971 else if (strcmp (argv[i], "-Xlinker") == 0)
3972 {
3973 infiles[n_infiles].language = "*";
3974 infiles[n_infiles++].name = argv[++i];
3975 }
3976 else if (strcmp (argv[i], "-Xassembler") == 0)
3977 {
3978 infiles[n_infiles].language = "*";
3979 infiles[n_infiles++].name = argv[++i];
3980 }
3981 else if (strcmp (argv[i], "-Xpreprocessor") == 0)
3982 {
3983 infiles[n_infiles].language = "*";
3984 infiles[n_infiles++].name = argv[++i];
3985 }
3986 else if (strcmp (argv[i], "-l") == 0)
3987 { /* POSIX allows separation of -l and the lib arg;
3988 canonicalize by concatenating -l with its arg */
3989 infiles[n_infiles].language = "*";
3990 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL);
3991 }
3992 else if (strncmp (argv[i], "-l", 2) == 0)
3993 {
3994 infiles[n_infiles].language = "*";
3995 infiles[n_infiles++].name = argv[i];
3996 }
3997 else if (strcmp (argv[i], "-specs") == 0)
3998 i++;
3999 else if (strncmp (argv[i], "-specs=", 7) == 0)
4000 ;
4001 else if (strcmp (argv[i], "-time") == 0)
4002 ;
4003 else if (strcmp (argv[i], "-###") == 0)
4004 ;
4005 else if (argv[i][0] == '-' && argv[i][1] != 0)
4006 {
4007 const char *p = &argv[i][1];
4008 int c = *p;
4009
4010 if (c == 'x')
4011 {
4012 if (p[1] == 0 && i + 1 == argc)
4013 fatal ("argument to `-x' is missing");
4014 if (p[1] == 0)
4015 spec_lang = argv[++i];
4016 else
4017 spec_lang = p + 1;
4018 if (! strcmp (spec_lang, "none"))
4019 /* Suppress the warning if -xnone comes after the last input
4020 file, because alternate command interfaces like g++ might
4021 find it useful to place -xnone after each input file. */
4022 spec_lang = 0;
4023 else
4024 last_language_n_infiles = n_infiles;
4025 continue;
4026 }
4027 switches[n_switches].part1 = p;
4028 /* Deal with option arguments in separate argv elements. */
4029 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4030 || WORD_SWITCH_TAKES_ARG (p))
4031 {
4032 int j = 0;
4033 int n_args = WORD_SWITCH_TAKES_ARG (p);
4034
4035 if (n_args == 0)
4036 {
4037 /* Count only the option arguments in separate argv elements. */
4038 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4039 }
4040 if (i + n_args >= argc)
4041 fatal ("argument to `-%s' is missing", p);
4042 switches[n_switches].args
4043 = xmalloc ((n_args + 1) * sizeof(const char *));
4044 while (j < n_args)
4045 switches[n_switches].args[j++] = argv[++i];
4046 /* Null-terminate the vector. */
4047 switches[n_switches].args[j] = 0;
4048 }
4049 else if (strchr (switches_need_spaces, c))
4050 {
4051 /* On some systems, ld cannot handle some options without
4052 a space. So split the option from its argument. */
4053 char *part1 = xmalloc (2);
4054 part1[0] = c;
4055 part1[1] = '\0';
4056
4057 switches[n_switches].part1 = part1;
4058 switches[n_switches].args = xmalloc (2 * sizeof (const char *));
4059 switches[n_switches].args[0] = xstrdup (p+1);
4060 switches[n_switches].args[1] = 0;
4061 }
4062 else
4063 switches[n_switches].args = 0;
4064
4065 switches[n_switches].live_cond = SWITCH_OK;
4066 switches[n_switches].validated = 0;
4067 switches[n_switches].ordering = 0;
4068 /* These are always valid, since gcc.c itself understands them. */
4069 if (!strcmp (p, "save-temps")
4070 || !strcmp (p, "static-libgcc")
4071 || !strcmp (p, "shared-libgcc")
4072 || !strcmp (p, "pipe"))
4073 switches[n_switches].validated = 1;
4074 else
4075 {
4076 char ch = switches[n_switches].part1[0];
4077 if (ch == 'B')
4078 switches[n_switches].validated = 1;
4079 }
4080 n_switches++;
4081 }
4082 else
4083 {
4084#ifdef HAVE_TARGET_OBJECT_SUFFIX
4085 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK));
4086#endif
4087
4088 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0)
4089 {
4090 perror_with_name (argv[i]);
4091 error_count++;
4092 }
4093 else
4094 {
4095 infiles[n_infiles].language = spec_lang;
4096 infiles[n_infiles++].name = argv[i];
4097 }
4098 }
4099 }
4100
4101 if (n_infiles == last_language_n_infiles && spec_lang != 0)
4102 error ("warning: `-x %s' after last input file has no effect", spec_lang);
4103
4104 /* Ensure we only invoke each subprocess once. */
4105 if (target_help_flag || print_help_list)
4106 {
4107 n_infiles = 1;
4108
4109 /* Create a dummy input file, so that we can pass --target-help on to
4110 the various sub-processes. */
4111 infiles[0].language = "c";
4112 infiles[0].name = "help-dummy";
4113
4114 if (target_help_flag)
4115 {
4116 switches[n_switches].part1 = "--target-help";
4117 switches[n_switches].args = 0;
4118 switches[n_switches].live_cond = SWITCH_OK;
4119 switches[n_switches].validated = 0;
4120
4121 n_switches++;
4122 }
4123
4124 if (print_help_list)
4125 {
4126 switches[n_switches].part1 = "--help";
4127 switches[n_switches].args = 0;
4128 switches[n_switches].live_cond = SWITCH_OK;
4129 switches[n_switches].validated = 0;
4130
4131 n_switches++;
4132 }
4133 }
4134
4135 switches[n_switches].part1 = 0;
4136 infiles[n_infiles].name = 0;
4137}
4138
4139/* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
4140 and place that in the environment. */
4141
4142static void
4143set_collect_gcc_options (void)
4144{
4145 int i;
4146 int first_time;
4147
4148 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
4149 the compiler. */
4150 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
4151 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
4152
4153 first_time = TRUE;
4154 for (i = 0; (int) i < n_switches; i++)
4155 {
4156 const char *const *args;
4157 const char *p, *q;
4158 if (!first_time)
4159 obstack_grow (&collect_obstack, " ", 1);
4160
4161 first_time = FALSE;
4162
4163 /* Ignore elided switches. */
4164 if (switches[i].live_cond == SWITCH_IGNORE)
4165 continue;
4166
4167 obstack_grow (&collect_obstack, "'-", 2);
4168 q = switches[i].part1;
4169 while ((p = strchr (q, '\'')))
4170 {
4171 obstack_grow (&collect_obstack, q, p - q);
4172 obstack_grow (&collect_obstack, "'\\''", 4);
4173 q = ++p;
4174 }
4175 obstack_grow (&collect_obstack, q, strlen (q));
4176 obstack_grow (&collect_obstack, "'", 1);
4177
4178 for (args = switches[i].args; args && *args; args++)
4179 {
4180 obstack_grow (&collect_obstack, " '", 2);
4181 q = *args;
4182 while ((p = strchr (q, '\'')))
4183 {
4184 obstack_grow (&collect_obstack, q, p - q);
4185 obstack_grow (&collect_obstack, "'\\''", 4);
4186 q = ++p;
4187 }
4188 obstack_grow (&collect_obstack, q, strlen (q));
4189 obstack_grow (&collect_obstack, "'", 1);
4190 }
4191 }
4192 obstack_grow (&collect_obstack, "\0", 1);
4193 putenv (obstack_finish (&collect_obstack));
4194}
4195
4196/* Process a spec string, accumulating and running commands. */
4197
4198/* These variables describe the input file name.
4199 input_file_number is the index on outfiles of this file,
4200 so that the output file name can be stored for later use by %o.
4201 input_basename is the start of the part of the input file
4202 sans all directory names, and basename_length is the number
4203 of characters starting there excluding the suffix .c or whatever. */
4204
4205static const char *input_filename;
4206static int input_file_number;
4207size_t input_filename_length;
4208static int basename_length;
4209static int suffixed_basename_length;
4210static const char *input_basename;
4211static const char *input_suffix;
4212static struct stat input_stat;
4213static int input_stat_set;
4214
4215/* The compiler used to process the current input file. */
4216static struct compiler *input_file_compiler;
4217
4218/* These are variables used within do_spec and do_spec_1. */
4219
4220/* Nonzero if an arg has been started and not yet terminated
4221 (with space, tab or newline). */
4222static int arg_going;
4223
4224/* Nonzero means %d or %g has been seen; the next arg to be terminated
4225 is a temporary file name. */
4226static int delete_this_arg;
4227
4228/* Nonzero means %w has been seen; the next arg to be terminated
4229 is the output file name of this compilation. */
4230static int this_is_output_file;
4231
4232/* Nonzero means %s has been seen; the next arg to be terminated
4233 is the name of a library file and we should try the standard
4234 search dirs for it. */
4235static int this_is_library_file;
4236
4237/* Nonzero means that the input of this command is coming from a pipe. */
4238static int input_from_pipe;
4239
4240/* Nonnull means substitute this for any suffix when outputting a switches
4241 arguments. */
4242static const char *suffix_subst;
4243
4244/* Process the spec SPEC and run the commands specified therein.
4245 Returns 0 if the spec is successfully processed; -1 if failed. */
4246
4247int
4248do_spec (const char *spec)
4249{
4250 int value;
4251
4252 value = do_spec_2 (spec);
4253
4254 /* Force out any unfinished command.
4255 If -pipe, this forces out the last command if it ended in `|'. */
4256 if (value == 0)
4257 {
4258 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4259 argbuf_index--;
4260
4261 set_collect_gcc_options ();
4262
4263 if (argbuf_index > 0)
4264 value = execute ();
4265 }
4266
4267 return value;
4268}
4269
4270static int
4271do_spec_2 (const char *spec)
4272{
4273 const char *string;
4274 int result;
4275
4276 clear_args ();
4277 arg_going = 0;
4278 delete_this_arg = 0;
4279 this_is_output_file = 0;
4280 this_is_library_file = 0;
4281 input_from_pipe = 0;
4282 suffix_subst = NULL;
4283
4284 result = do_spec_1 (spec, 0, NULL);
4285
4286 /* End any pending argument. */
4287 if (arg_going)
4288 {
4289 obstack_1grow (&obstack, 0);
4290 string = obstack_finish (&obstack);
4291 if (this_is_library_file)
4292 string = find_file (string);
4293 store_arg (string, delete_this_arg, this_is_output_file);
4294 if (this_is_output_file)
4295 outfiles[input_file_number] = string;
4296 arg_going = 0;
4297 }
4298
4299 return result;
4300}
4301
4302
4303/* Process the given spec string and add any new options to the end
4304 of the switches/n_switches array. */
4305
4306static void
4307do_option_spec (const char *name, const char *spec)
4308{
4309 unsigned int i, value_count, value_len;
4310 const char *p, *q, *value;
4311 char *tmp_spec, *tmp_spec_p;
4312
4313 if (configure_default_options[0].name == NULL)
4314 return;
4315
4316 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4317 if (strcmp (configure_default_options[i].name, name) == 0)
4318 break;
4319 if (i == ARRAY_SIZE (configure_default_options))
4320 return;
4321
4322 value = configure_default_options[i].value;
4323 value_len = strlen (value);
4324
4325 /* Compute the size of the final spec. */
4326 value_count = 0;
4327 p = spec;
4328 while ((p = strstr (p, "%(VALUE)")) != NULL)
4329 {
4330 p ++;
4331 value_count ++;
4332 }
4333
4334 /* Replace each %(VALUE) by the specified value. */
4335 tmp_spec = alloca (strlen (spec) + 1
4336 + value_count * (value_len - strlen ("%(VALUE)")));
4337 tmp_spec_p = tmp_spec;
4338 q = spec;
4339 while ((p = strstr (q, "%(VALUE)")) != NULL)
4340 {
4341 memcpy (tmp_spec_p, q, p - q);
4342 tmp_spec_p = tmp_spec_p + (p - q);
4343 memcpy (tmp_spec_p, value, value_len);
4344 tmp_spec_p += value_len;
4345 q = p + strlen ("%(VALUE)");
4346 }
4347 strcpy (tmp_spec_p, q);
4348
4349 do_self_spec (tmp_spec);
4350}
4351
4352/* Process the given spec string and add any new options to the end
4353 of the switches/n_switches array. */
4354
4355static void
4356do_self_spec (const char *spec)
4357{
4358 do_spec_2 (spec);
4359 do_spec_1 (" ", 0, NULL);
4360
4361 if (argbuf_index > 0)
4362 {
4363 int i, first;
4364
4365 first = n_switches;
4366 n_switches += argbuf_index;
4367 switches = xrealloc (switches,
4368 sizeof (struct switchstr) * (n_switches + 1));
4369
4370 switches[n_switches] = switches[first];
4371 for (i = 0; i < argbuf_index; i++)
4372 {
4373 struct switchstr *sw;
4374
4375 /* Each switch should start with '-'. */
4376 if (argbuf[i][0] != '-')
4377 abort ();
4378
4379 sw = &switches[i + first];
4380 sw->part1 = &argbuf[i][1];
4381 sw->args = 0;
4382 sw->live_cond = SWITCH_OK;
4383 sw->validated = 0;
4384 sw->ordering = 0;
4385 }
4386 }
4387}
4388
4389/* Process the sub-spec SPEC as a portion of a larger spec.
4390 This is like processing a whole spec except that we do
4391 not initialize at the beginning and we do not supply a
4392 newline by default at the end.
4393 INSWITCH nonzero means don't process %-sequences in SPEC;
4394 in this case, % is treated as an ordinary character.
4395 This is used while substituting switches.
4396 INSWITCH nonzero also causes SPC not to terminate an argument.
4397
4398 Value is zero unless a line was finished
4399 and the command on that line reported an error. */
4400
4401static int
4402do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4403{
4404 const char *p = spec;
4405 int c;
4406 int i;
4407 const char *string;
4408 int value;
4409
4410 while ((c = *p++))
4411 /* If substituting a switch, treat all chars like letters.
4412 Otherwise, NL, SPC, TAB and % are special. */
4413 switch (inswitch ? 'a' : c)
4414 {
4415 case '\n':
4416 /* End of line: finish any pending argument,
4417 then run the pending command if one has been started. */
4418 if (arg_going)
4419 {
4420 obstack_1grow (&obstack, 0);
4421 string = obstack_finish (&obstack);
4422 if (this_is_library_file)
4423 string = find_file (string);
4424 store_arg (string, delete_this_arg, this_is_output_file);
4425 if (this_is_output_file)
4426 outfiles[input_file_number] = string;
4427 }
4428 arg_going = 0;
4429
4430 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4431 {
4432 /* A `|' before the newline means use a pipe here,
4433 but only if -pipe was specified.
4434 Otherwise, execute now and don't pass the `|' as an arg. */
4435 if (use_pipes)
4436 {
4437 input_from_pipe = 1;
4438 break;
4439 }
4440 else
4441 argbuf_index--;
4442 }
4443
4444 set_collect_gcc_options ();
4445
4446 if (argbuf_index > 0)
4447 {
4448 value = execute ();
4449 if (value)
4450 return value;
4451 }
4452 /* Reinitialize for a new command, and for a new argument. */
4453 clear_args ();
4454 arg_going = 0;
4455 delete_this_arg = 0;
4456 this_is_output_file = 0;
4457 this_is_library_file = 0;
4458 input_from_pipe = 0;
4459 break;
4460
4461 case '|':
4462 /* End any pending argument. */
4463 if (arg_going)
4464 {
4465 obstack_1grow (&obstack, 0);
4466 string = obstack_finish (&obstack);
4467 if (this_is_library_file)
4468 string = find_file (string);
4469 store_arg (string, delete_this_arg, this_is_output_file);
4470 if (this_is_output_file)
4471 outfiles[input_file_number] = string;
4472 }
4473
4474 /* Use pipe */
4475 obstack_1grow (&obstack, c);
4476 arg_going = 1;
4477 break;
4478
4479 case '\t':
4480 case ' ':
4481 /* Space or tab ends an argument if one is pending. */
4482 if (arg_going)
4483 {
4484 obstack_1grow (&obstack, 0);
4485 string = obstack_finish (&obstack);
4486 if (this_is_library_file)
4487 string = find_file (string);
4488 store_arg (string, delete_this_arg, this_is_output_file);
4489 if (this_is_output_file)
4490 outfiles[input_file_number] = string;
4491 }
4492 /* Reinitialize for a new argument. */
4493 arg_going = 0;
4494 delete_this_arg = 0;
4495 this_is_output_file = 0;
4496 this_is_library_file = 0;
4497 break;
4498
4499 case '%':
4500 switch (c = *p++)
4501 {
4502 case 0:
4503 fatal ("invalid specification! Bug in cc");
4504
4505 case 'b':
4506 obstack_grow (&obstack, input_basename, basename_length);
4507 arg_going = 1;
4508 break;
4509
4510 case 'B':
4511 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4512 arg_going = 1;
4513 break;
4514
4515 case 'd':
4516 delete_this_arg = 2;
4517 break;
4518
4519 /* Dump out the directories specified with LIBRARY_PATH,
4520 followed by the absolute directories
4521 that we search for startfiles. */
4522 case 'D':
4523 {
4524 struct prefix_list *pl = startfile_prefixes.plist;
4525 size_t bufsize = 100;
4526 char *buffer = xmalloc (bufsize);
4527 int idx;
4528
4529 for (; pl; pl = pl->next)
4530 {
4531#ifdef RELATIVE_PREFIX_NOT_LINKDIR
4532 /* Used on systems which record the specified -L dirs
4533 and use them to search for dynamic linking. */
4534 /* Relative directories always come from -B,
4535 and it is better not to use them for searching
4536 at run time. In particular, stage1 loses. */
4537 if (!IS_ABSOLUTE_PATH (pl->prefix))
4538 continue;
4539#endif
4540 /* Try subdirectory if there is one. */
4541 if (multilib_dir != NULL
4542 || (pl->os_multilib && multilib_os_dir != NULL))
4543 {
4544 const char *multi_dir;
4545
4546 multi_dir = pl->os_multilib ? multilib_os_dir
4547 : multilib_dir;
4548 if (machine_suffix && multilib_dir)
4549 {
4550 if (strlen (pl->prefix) + strlen (machine_suffix)
4551 >= bufsize)
4552 bufsize = (strlen (pl->prefix)
4553 + strlen (machine_suffix)) * 2 + 1;
4554 buffer = xrealloc (buffer, bufsize);
4555 strcpy (buffer, pl->prefix);
4556 strcat (buffer, machine_suffix);
4557 if (is_directory (buffer, multilib_dir, 1))
4558 {
4559 do_spec_1 ("-L", 0, NULL);
4560#ifdef SPACE_AFTER_L_OPTION
4561 do_spec_1 (" ", 0, NULL);
4562#endif
4563 do_spec_1 (buffer, 1, NULL);
4564 do_spec_1 (multilib_dir, 1, NULL);
4565 /* Make this a separate argument. */
4566 do_spec_1 (" ", 0, NULL);
4567 }
4568 }
4569 if (!pl->require_machine_suffix)
4570 {
4571 if (is_directory (pl->prefix, multi_dir, 1))
4572 {
4573 do_spec_1 ("-L", 0, NULL);
4574#ifdef SPACE_AFTER_L_OPTION
4575 do_spec_1 (" ", 0, NULL);
4576#endif
4577 do_spec_1 (pl->prefix, 1, NULL);
4578 do_spec_1 (multi_dir, 1, NULL);
4579 /* Make this a separate argument. */
4580 do_spec_1 (" ", 0, NULL);
4581 }
4582 }
4583 }
4584 if (machine_suffix)
4585 {
4586 if (is_directory (pl->prefix, machine_suffix, 1))
4587 {
4588 do_spec_1 ("-L", 0, NULL);
4589#ifdef SPACE_AFTER_L_OPTION
4590 do_spec_1 (" ", 0, NULL);
4591#endif
4592 do_spec_1 (pl->prefix, 1, NULL);
4593 /* Remove slash from machine_suffix. */
4594 if (strlen (machine_suffix) >= bufsize)
4595 bufsize = strlen (machine_suffix) * 2 + 1;
4596 buffer = xrealloc (buffer, bufsize);
4597 strcpy (buffer, machine_suffix);
4598 idx = strlen (buffer);
4599 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4600 buffer[idx - 1] = 0;
4601 do_spec_1 (buffer, 1, NULL);
4602 /* Make this a separate argument. */
4603 do_spec_1 (" ", 0, NULL);
4604 }
4605 }
4606 if (!pl->require_machine_suffix)
4607 {
4608 if (is_directory (pl->prefix, "", 1))
4609 {
4610 do_spec_1 ("-L", 0, NULL);
4611#ifdef SPACE_AFTER_L_OPTION
4612 do_spec_1 (" ", 0, NULL);
4613#endif
4614 /* Remove slash from pl->prefix. */
4615 if (strlen (pl->prefix) >= bufsize)
4616 bufsize = strlen (pl->prefix) * 2 + 1;
4617 buffer = xrealloc (buffer, bufsize);
4618 strcpy (buffer, pl->prefix);
4619 idx = strlen (buffer);
4620 if (IS_DIR_SEPARATOR (buffer[idx - 1]))
4621 buffer[idx - 1] = 0;
4622 do_spec_1 (buffer, 1, NULL);
4623 /* Make this a separate argument. */
4624 do_spec_1 (" ", 0, NULL);
4625 }
4626 }
4627 }
4628 free (buffer);
4629 }
4630 break;
4631
4632 case 'e':
4633 /* %efoo means report an error with `foo' as error message
4634 and don't execute any more commands for this file. */
4635 {
4636 const char *q = p;
4637 char *buf;
4638 while (*p != 0 && *p != '\n')
4639 p++;
4640 buf = alloca (p - q + 1);
4641 strncpy (buf, q, p - q);
4642 buf[p - q] = 0;
4643 error ("%s", buf);
4644 return -1;
4645 }
4646 break;
4647 case 'n':
4648 /* %nfoo means report a notice with `foo' on stderr. */
4649 {
4650 const char *q = p;
4651 char *buf;
4652 while (*p != 0 && *p != '\n')
4653 p++;
4654 buf = alloca (p - q + 1);
4655 strncpy (buf, q, p - q);
4656 buf[p - q] = 0;
4657 notice ("%s\n", buf);
4658 if (*p)
4659 p++;
4660 }
4661 break;
4662
4663 case 'j':
4664 {
4665 struct stat st;
4666
4667 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4668 defined, and it is not a directory, and it is
4669 writable, use it. Otherwise, treat this like any
4670 other temporary file. */
4671
4672 if ((!save_temps_flag)
4673 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4674 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4675 {
4676 obstack_grow (&obstack, HOST_BIT_BUCKET,
4677 strlen (HOST_BIT_BUCKET));
4678 delete_this_arg = 0;
4679 arg_going = 1;
4680 break;
4681 }
4682 }
4683 goto create_temp_file;
4684 case '|':
4685 if (use_pipes)
4686 {
4687 obstack_1grow (&obstack, '-');
4688 delete_this_arg = 0;
4689 arg_going = 1;
4690
4691 /* consume suffix */
4692 while (*p == '.' || ISALPHA ((unsigned char) *p))
4693 p++;
4694 if (p[0] == '%' && p[1] == 'O')
4695 p += 2;
4696
4697 break;
4698 }
4699 goto create_temp_file;
4700 case 'm':
4701 if (use_pipes)
4702 {
4703 /* consume suffix */
4704 while (*p == '.' || ISALPHA ((unsigned char) *p))
4705 p++;
4706 if (p[0] == '%' && p[1] == 'O')
4707 p += 2;
4708
4709 break;
4710 }
4711 goto create_temp_file;
4712 case 'g':
4713 case 'u':
4714 case 'U':
4715 create_temp_file:
4716 {
4717 struct temp_name *t;
4718 int suffix_length;
4719 const char *suffix = p;
4720 char *saved_suffix = NULL;
4721
4722 while (*p == '.' || ISALPHA ((unsigned char) *p))
4723 p++;
4724 suffix_length = p - suffix;
4725 if (p[0] == '%' && p[1] == 'O')
4726 {
4727 p += 2;
4728 /* We don't support extra suffix characters after %O. */
4729 if (*p == '.' || ISALPHA ((unsigned char) *p))
4730 abort ();
4731 if (suffix_length == 0)
4732 suffix = TARGET_OBJECT_SUFFIX;
4733 else
4734 {
4735 saved_suffix
4736 = xmalloc (suffix_length
4737 + strlen (TARGET_OBJECT_SUFFIX));
4738 strncpy (saved_suffix, suffix, suffix_length);
4739 strcpy (saved_suffix + suffix_length,
4740 TARGET_OBJECT_SUFFIX);
4741 }
4742 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4743 }
4744
4745 /* If the input_filename has the same suffix specified
4746 for the %g, %u, or %U, and -save-temps is specified,
4747 we could end up using that file as an intermediate
4748 thus clobbering the user's source file (.e.g.,
4749 gcc -save-temps foo.s would clobber foo.s with the
4750 output of cpp0). So check for this condition and
4751 generate a temp file as the intermediate. */
4752
4753 if (save_temps_flag)
4754 {
4755 temp_filename_length = basename_length + suffix_length;
4756 temp_filename = alloca (temp_filename_length + 1);
4757 strncpy ((char *) temp_filename, input_basename, basename_length);
4758 strncpy ((char *) temp_filename + basename_length, suffix,
4759 suffix_length);
4760 *((char *) temp_filename + temp_filename_length) = '\0';
4761 if (strcmp (temp_filename, input_filename) != 0)
4762 {
4763 struct stat st_temp;
4764
4765 /* Note, set_input() resets input_stat_set to 0. */
4766 if (input_stat_set == 0)
4767 {
4768 input_stat_set = stat (input_filename, &input_stat);
4769 if (input_stat_set >= 0)
4770 input_stat_set = 1;
4771 }
4772
4773 /* If we have the stat for the input_filename
4774 and we can do the stat for the temp_filename
4775 then the they could still refer to the same
4776 file if st_dev/st_ino's are the same. */
4777
4778 if (input_stat_set != 1
4779 || stat (temp_filename, &st_temp) < 0
4780 || input_stat.st_dev != st_temp.st_dev
4781 || input_stat.st_ino != st_temp.st_ino)
4782 {
4783 temp_filename = save_string (temp_filename,
4784 temp_filename_length + 1);
4785 obstack_grow (&obstack, temp_filename,
4786 temp_filename_length);
4787 arg_going = 1;
4788 delete_this_arg = 0;
4789 break;
4790 }
4791 }
4792 }
4793
4794 /* See if we already have an association of %g/%u/%U and
4795 suffix. */
4796 for (t = temp_names; t; t = t->next)
4797 if (t->length == suffix_length
4798 && strncmp (t->suffix, suffix, suffix_length) == 0
4799 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4800 break;
4801
4802 /* Make a new association if needed. %u and %j
4803 require one. */
4804 if (t == 0 || c == 'u' || c == 'j')
4805 {
4806 if (t == 0)
4807 {
4808 t = xmalloc (sizeof (struct temp_name));
4809 t->next = temp_names;
4810 temp_names = t;
4811 }
4812 t->length = suffix_length;
4813 if (saved_suffix)
4814 {
4815 t->suffix = saved_suffix;
4816 saved_suffix = NULL;
4817 }
4818 else
4819 t->suffix = save_string (suffix, suffix_length);
4820 t->unique = (c == 'u' || c == 'U' || c == 'j');
4821 temp_filename = make_temp_file (t->suffix);
4822 temp_filename_length = strlen (temp_filename);
4823 t->filename = temp_filename;
4824 t->filename_length = temp_filename_length;
4825 }
4826
4827 if (saved_suffix)
4828 free (saved_suffix);
4829
4830 obstack_grow (&obstack, t->filename, t->filename_length);
4831 delete_this_arg = 1;
4832 }
4833 arg_going = 1;
4834 break;
4835
4836 case 'i':
4837 if (combine_inputs)
4838 {
4839 for (i = 0; (int) i < n_infiles; i++)
4840 store_arg (infiles[i].name, 0, 0);
4841 }
4842 else
4843 {
4844 obstack_grow (&obstack, input_filename, input_filename_length);
4845 arg_going = 1;
4846 }
4847 break;
4848
4849 case 'I':
4850 {
4851 struct prefix_list *pl = include_prefixes.plist;
4852
4853 if (gcc_exec_prefix)
4854 {
4855 do_spec_1 ("-iprefix", 1, NULL);
4856 /* Make this a separate argument. */
4857 do_spec_1 (" ", 0, NULL);
4858 do_spec_1 (gcc_exec_prefix, 1, NULL);
4859 do_spec_1 (" ", 0, NULL);
4860 }
4861
4862 if (target_system_root_changed ||
4863 (target_system_root && target_sysroot_hdrs_suffix))
4864 {
4865 do_spec_1 ("-isysroot", 1, NULL);
4866 /* Make this a separate argument. */
4867 do_spec_1 (" ", 0, NULL);
4868 do_spec_1 (target_system_root, 1, NULL);
4869 if (target_sysroot_hdrs_suffix)
4870 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4871 do_spec_1 (" ", 0, NULL);
4872 }
4873
4874 for (; pl; pl = pl->next)
4875 {
4876 do_spec_1 ("-isystem", 1, NULL);
4877 /* Make this a separate argument. */
4878 do_spec_1 (" ", 0, NULL);
4879 do_spec_1 (pl->prefix, 1, NULL);
4880 do_spec_1 (" ", 0, NULL);
4881 }
4882 }
4883 break;
4884
4885 case 'o':
4886 {
4887 int max = n_infiles;
4888 max += lang_specific_extra_outfiles;
4889
4890 for (i = 0; i < max; i++)
4891 if (outfiles[i])
4892 store_arg (outfiles[i], 0, 0);
4893 break;
4894 }
4895
4896 case 'O':
4897 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4898 arg_going = 1;
4899 break;
4900
4901 case 's':
4902 this_is_library_file = 1;
4903 break;
4904
4905 case 'V':
4906 outfiles[input_file_number] = NULL;
4907 break;
4908
4909 case 'w':
4910 this_is_output_file = 1;
4911 break;
4912
4913 case 'W':
4914 {
4915 int cur_index = argbuf_index;
4916 /* Handle the {...} following the %W. */
4917 if (*p != '{')
4918 abort ();
4919 p = handle_braces (p + 1);
4920 if (p == 0)
4921 return -1;
4922 /* End any pending argument. */
4923 if (arg_going)
4924 {
4925 obstack_1grow (&obstack, 0);
4926 string = obstack_finish (&obstack);
4927 if (this_is_library_file)
4928 string = find_file (string);
4929 store_arg (string, delete_this_arg, this_is_output_file);
4930 if (this_is_output_file)
4931 outfiles[input_file_number] = string;
4932 arg_going = 0;
4933 }
4934 /* If any args were output, mark the last one for deletion
4935 on failure. */
4936 if (argbuf_index != cur_index)
4937 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4938 break;
4939 }
4940
4941 /* %x{OPTION} records OPTION for %X to output. */
4942 case 'x':
4943 {
4944 const char *p1 = p;
4945 char *string;
4946
4947 /* Skip past the option value and make a copy. */
4948 if (*p != '{')
4949 abort ();
4950 while (*p++ != '}')
4951 ;
4952 string = save_string (p1 + 1, p - p1 - 2);
4953
4954 /* See if we already recorded this option. */
4955 for (i = 0; i < n_linker_options; i++)
4956 if (! strcmp (string, linker_options[i]))
4957 {
4958 free (string);
4959 return 0;
4960 }
4961
4962 /* This option is new; add it. */
4963 add_linker_option (string, strlen (string));
4964 }
4965 break;
4966
4967 /* Dump out the options accumulated previously using %x. */
4968 case 'X':
4969 for (i = 0; i < n_linker_options; i++)
4970 {
4971 do_spec_1 (linker_options[i], 1, NULL);
4972 /* Make each accumulated option a separate argument. */
4973 do_spec_1 (" ", 0, NULL);
4974 }
4975 break;
4976
4977 /* Dump out the options accumulated previously using -Wa,. */
4978 case 'Y':
4979 for (i = 0; i < n_assembler_options; i++)
4980 {
4981 do_spec_1 (assembler_options[i], 1, NULL);
4982 /* Make each accumulated option a separate argument. */
4983 do_spec_1 (" ", 0, NULL);
4984 }
4985 break;
4986
4987 /* Dump out the options accumulated previously using -Wp,. */
4988 case 'Z':
4989 for (i = 0; i < n_preprocessor_options; i++)
4990 {
4991 do_spec_1 (preprocessor_options[i], 1, NULL);
4992 /* Make each accumulated option a separate argument. */
4993 do_spec_1 (" ", 0, NULL);
4994 }
4995 break;
4996
4997 /* Here are digits and numbers that just process
4998 a certain constant string as a spec. */
4999
5000 case '1':
5001 value = do_spec_1 (cc1_spec, 0, NULL);
5002 if (value != 0)
5003 return value;
5004 break;
5005
5006 case '2':
5007 value = do_spec_1 (cc1plus_spec, 0, NULL);
5008 if (value != 0)
5009 return value;
5010 break;
5011
5012 case 'a':
5013 value = do_spec_1 (asm_spec, 0, NULL);
5014 if (value != 0)
5015 return value;
5016 break;
5017
5018 case 'A':
5019 value = do_spec_1 (asm_final_spec, 0, NULL);
5020 if (value != 0)
5021 return value;
5022 break;
5023
5024 case 'C':
5025 {
5026 const char *const spec
5027 = (input_file_compiler->cpp_spec
5028 ? input_file_compiler->cpp_spec
5029 : cpp_spec);
5030 value = do_spec_1 (spec, 0, NULL);
5031 if (value != 0)
5032 return value;
5033 }
5034 break;
5035
5036 case 'E':
5037 value = do_spec_1 (endfile_spec, 0, NULL);
5038 if (value != 0)
5039 return value;
5040 break;
5041
5042 case 'l':
5043 value = do_spec_1 (link_spec, 0, NULL);
5044 if (value != 0)
5045 return value;
5046 break;
5047
5048 case 'L':
5049 value = do_spec_1 (lib_spec, 0, NULL);
5050 if (value != 0)
5051 return value;
5052 break;
5053
5054 case 'G':
5055 value = do_spec_1 (libgcc_spec, 0, NULL);
5056 if (value != 0)
5057 return value;
5058 break;
5059
5060 case 'M':
5061 if (multilib_dir && strcmp (multilib_dir, ".") != 0)
5062 {
5063 char *p;
5064 const char *q;
5065 size_t len;
5066
5067 len = strlen (multilib_dir);
5068 obstack_blank (&obstack, len + 1);
5069 p = obstack_next_free (&obstack) - (len + 1);
5070
5071 *p++ = '_';
5072 for (q = multilib_dir; *q ; ++q, ++p)
5073 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q);
5074 }
5075 break;
5076
5077 case 'R':
5078 /* We assume there is a directory
5079 separator at the end of this string. */
5080 if (target_system_root)
5081 {
5082 obstack_grow (&obstack, target_system_root,
5083 strlen (target_system_root));
5084 if (target_sysroot_suffix)
5085 obstack_grow (&obstack, target_sysroot_suffix,
5086 strlen (target_sysroot_suffix));
5087 }
5088 break;
5089
5090 case 'S':
5091 value = do_spec_1 (startfile_spec, 0, NULL);
5092 if (value != 0)
5093 return value;
5094 break;
5095
5096 /* Here we define characters other than letters and digits. */
5097
5098 case '{':
5099 p = handle_braces (p);
5100 if (p == 0)
5101 return -1;
5102 break;
5103
5104 case ':':
5105 p = handle_spec_function (p);
5106 if (p == 0)
5107 return -1;
5108 break;
5109
5110 case '%':
5111 obstack_1grow (&obstack, '%');
5112 break;
5113
5114 case '.':
5115 {
5116 unsigned len = 0;
5117
5118 while (p[len] && p[len] != ' ' && p[len] != '%')
5119 len++;
5120 suffix_subst = save_string (p - 1, len + 1);
5121 p += len;
5122 }
5123 break;
5124
5125 /* Henceforth ignore the option(s) matching the pattern
5126 after the %<. */
5127 case '<':
5128 {
5129 unsigned len = 0;
5130 int have_wildcard = 0;
5131 int i;
5132
5133 while (p[len] && p[len] != ' ' && p[len] != '\t')
5134 len++;
5135
5136 if (p[len-1] == '*')
5137 have_wildcard = 1;
5138
5139 for (i = 0; i < n_switches; i++)
5140 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5141 && (have_wildcard || switches[i].part1[len] == '\0'))
5142 {
5143 switches[i].live_cond = SWITCH_IGNORE;
5144 switches[i].validated = 1;
5145 }
5146
5147 p += len;
5148 }
5149 break;
5150
5151 case '*':
5152 if (soft_matched_part)
5153 {
5154 do_spec_1 (soft_matched_part, 1, NULL);
5155 do_spec_1 (" ", 0, NULL);
5156 }
5157 else
5158 /* Catch the case where a spec string contains something like
5159 '%{foo:%*}'. ie there is no * in the pattern on the left
5160 hand side of the :. */
5161 error ("spec failure: '%%*' has not been initialized by pattern match");
5162 break;
5163
5164 /* Process a string found as the value of a spec given by name.
5165 This feature allows individual machine descriptions
5166 to add and use their own specs.
5167 %[...] modifies -D options the way %P does;
5168 %(...) uses the spec unmodified. */
5169 case '[':
5170 error ("warning: use of obsolete %%[ operator in specs");
5171 case '(':
5172 {
5173 const char *name = p;
5174 struct spec_list *sl;
5175 int len;
5176
5177 /* The string after the S/P is the name of a spec that is to be
5178 processed. */
5179 while (*p && *p != ')' && *p != ']')
5180 p++;
5181
5182 /* See if it's in the list. */
5183 for (len = p - name, sl = specs; sl; sl = sl->next)
5184 if (sl->name_len == len && !strncmp (sl->name, name, len))
5185 {
5186 name = *(sl->ptr_spec);
5187#ifdef DEBUG_SPECS
5188 notice ("Processing spec %c%s%c, which is '%s'\n",
5189 c, sl->name, (c == '(') ? ')' : ']', name);
5190#endif
5191 break;
5192 }
5193
5194 if (sl)
5195 {
5196 if (c == '(')
5197 {
5198 value = do_spec_1 (name, 0, NULL);
5199 if (value != 0)
5200 return value;
5201 }
5202 else
5203 {
5204 char *x = alloca (strlen (name) * 2 + 1);
5205 char *buf = x;
5206 const char *y = name;
5207 int flag = 0;
5208
5209 /* Copy all of NAME into BUF, but put __ after
5210 every -D and at the end of each arg. */
5211 while (1)
5212 {
5213 if (! strncmp (y, "-D", 2))
5214 {
5215 *x++ = '-';
5216 *x++ = 'D';
5217 *x++ = '_';
5218 *x++ = '_';
5219 y += 2;
5220 flag = 1;
5221 continue;
5222 }
5223 else if (flag
5224 && (*y == ' ' || *y == '\t' || *y == '='
5225 || *y == '}' || *y == 0))
5226 {
5227 *x++ = '_';
5228 *x++ = '_';
5229 flag = 0;
5230 }
5231 if (*y == 0)
5232 break;
5233 else
5234 *x++ = *y++;
5235 }
5236 *x = 0;
5237
5238 value = do_spec_1 (buf, 0, NULL);
5239 if (value != 0)
5240 return value;
5241 }
5242 }
5243
5244 /* Discard the closing paren or bracket. */
5245 if (*p)
5246 p++;
5247 }
5248 break;
5249
5250 default:
5251 error ("spec failure: unrecognized spec option '%c'", c);
5252 break;
5253 }
5254 break;
5255
5256 case '\\':
5257 /* Backslash: treat next character as ordinary. */
5258 c = *p++;
5259
5260 /* Fall through. */
5261 default:
5262 /* Ordinary character: put it into the current argument. */
5263 obstack_1grow (&obstack, c);
5264 arg_going = 1;
5265 }
5266
5267 /* End of string. If we are processing a spec function, we need to
5268 end any pending argument. */
5269 if (processing_spec_function && arg_going)
5270 {
5271 obstack_1grow (&obstack, 0);
5272 string = obstack_finish (&obstack);
5273 if (this_is_library_file)
5274 string = find_file (string);
5275 store_arg (string, delete_this_arg, this_is_output_file);
5276 if (this_is_output_file)
5277 outfiles[input_file_number] = string;
5278 arg_going = 0;
5279 }
5280
5281 return 0;
5282}
5283
5284/* Look up a spec function. */
5285
5286static const struct spec_function *
5287lookup_spec_function (const char *name)
5288{
5289 static const struct spec_function * const spec_function_tables[] =
5290 {
5291 static_spec_functions,
5292 lang_specific_spec_functions,
5293 };
5294 const struct spec_function *sf;
5295 unsigned int i;
5296
5297 for (i = 0; i < ARRAY_SIZE (spec_function_tables); i++)
5298 {
5299 for (sf = spec_function_tables[i]; sf->name != NULL; sf++)
5300 if (strcmp (sf->name, name) == 0)
5301 return sf;
5302 }
5303
5304 return NULL;
5305}
5306
5307/* Evaluate a spec function. */
5308
5309static const char *
5310eval_spec_function (const char *func, const char *args)
5311{
5312 const struct spec_function *sf;
5313 const char *funcval;
5314
5315 /* Saved spec processing context. */
5316 int save_argbuf_index;
5317 int save_argbuf_length;
5318 const char **save_argbuf;
5319
5320 int save_arg_going;
5321 int save_delete_this_arg;
5322 int save_this_is_output_file;
5323 int save_this_is_library_file;
5324 int save_input_from_pipe;
5325 const char *save_suffix_subst;
5326
5327
5328 sf = lookup_spec_function (func);
5329 if (sf == NULL)
5330 fatal ("unknown spec function `%s'", func);
5331
5332 /* Push the spec processing context. */
5333 save_argbuf_index = argbuf_index;
5334 save_argbuf_length = argbuf_length;
5335 save_argbuf = argbuf;
5336
5337 save_arg_going = arg_going;
5338 save_delete_this_arg = delete_this_arg;
5339 save_this_is_output_file = this_is_output_file;
5340 save_this_is_library_file = this_is_library_file;
5341 save_input_from_pipe = input_from_pipe;
5342 save_suffix_subst = suffix_subst;
5343
5344 /* Create a new spec processing context, and build the function
5345 arguments. */
5346
5347 alloc_args ();
5348 if (do_spec_2 (args) < 0)
5349 fatal ("error in args to spec function `%s'", func);
5350
5351 /* argbuf_index is an index for the next argument to be inserted, and
5352 so contains the count of the args already inserted. */
5353
5354 funcval = (*sf->func) (argbuf_index, argbuf);
5355
5356 /* Pop the spec processing context. */
5357 argbuf_index = save_argbuf_index;
5358 argbuf_length = save_argbuf_length;
5359 free (argbuf);
5360 argbuf = save_argbuf;
5361
5362 arg_going = save_arg_going;
5363 delete_this_arg = save_delete_this_arg;
5364 this_is_output_file = save_this_is_output_file;
5365 this_is_library_file = save_this_is_library_file;
5366 input_from_pipe = save_input_from_pipe;
5367 suffix_subst = save_suffix_subst;
5368
5369 return funcval;
5370}
5371
5372/* Handle a spec function call of the form:
5373
5374 %:function(args)
5375
5376 ARGS is processed as a spec in a separate context and split into an
5377 argument vector in the normal fashion. The function returns a string
5378 containing a spec which we then process in the caller's context, or
5379 NULL if no processing is required. */
5380
5381static const char *
5382handle_spec_function (const char *p)
5383{
5384 char *func, *args;
5385 const char *endp, *funcval;
5386 int count;
5387
5388 processing_spec_function++;
5389
5390 /* Get the function name. */
5391 for (endp = p; *endp != '\0'; endp++)
5392 {
5393 if (*endp == '(') /* ) */
5394 break;
5395 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5396 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5397 fatal ("malformed spec function name");
5398 }
5399 if (*endp != '(') /* ) */
5400 fatal ("no arguments for spec function");
5401 func = save_string (p, endp - p);
5402 p = ++endp;
5403
5404 /* Get the arguments. */
5405 for (count = 0; *endp != '\0'; endp++)
5406 {
5407 /* ( */
5408 if (*endp == ')')
5409 {
5410 if (count == 0)
5411 break;
5412 count--;
5413 }
5414 else if (*endp == '(') /* ) */
5415 count++;
5416 }
5417 /* ( */
5418 if (*endp != ')')
5419 fatal ("malformed spec function arguments");
5420 args = save_string (p, endp - p);
5421 p = ++endp;
5422
5423 /* p now points to just past the end of the spec function expression. */
5424
5425 funcval = eval_spec_function (func, args);
5426 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5427 p = NULL;
5428
5429 free (func);
5430 free (args);
5431
5432 processing_spec_function--;
5433
5434 return p;
5435}
5436
5437/* Inline subroutine of handle_braces. Returns true if the current
5438 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5439static inline bool
5440input_suffix_matches (const char *atom, const char *end_atom)
5441{
5442 return (input_suffix
5443 && !strncmp (input_suffix, atom, end_atom - atom)
5444 && input_suffix[end_atom - atom] == '\0');
5445}
5446
5447/* Inline subroutine of handle_braces. Returns true if a switch
5448 matching the atom bracketed by ATOM and END_ATOM appeared on the
5449 command line. */
5450static inline bool
5451switch_matches (const char *atom, const char *end_atom, int starred)
5452{
5453 int i;
5454 int len = end_atom - atom;
5455 int plen = starred ? len : -1;
5456
5457 for (i = 0; i < n_switches; i++)
5458 if (!strncmp (switches[i].part1, atom, len)
5459 && (starred || switches[i].part1[len] == '\0')
5460 && check_live_switch (i, plen))
5461 return true;
5462
5463 return false;
5464}
5465
5466/* Inline subroutine of handle_braces. Mark all of the switches which
5467 match ATOM (extends to END_ATOM; STARRED indicates whether there
5468 was a star after the atom) for later processing. */
5469static inline void
5470mark_matching_switches (const char *atom, const char *end_atom, int starred)
5471{
5472 int i;
5473 int len = end_atom - atom;
5474 int plen = starred ? len : -1;
5475
5476 for (i = 0; i < n_switches; i++)
5477 if (!strncmp (switches[i].part1, atom, len)
5478 && (starred || switches[i].part1[len] == '\0')
5479 && check_live_switch (i, plen))
5480 switches[i].ordering = 1;
5481}
5482
5483/* Inline subroutine of handle_braces. Process all the currently
5484 marked switches through give_switch, and clear the marks. */
5485static inline void
5486process_marked_switches (void)
5487{
5488 int i;
5489
5490 for (i = 0; i < n_switches; i++)
5491 if (switches[i].ordering == 1)
5492 {
5493 switches[i].ordering = 0;
5494 give_switch (i, 0);
5495 }
5496}
5497
5498/* Handle a %{ ... } construct. P points just inside the leading {.
5499 Returns a pointer one past the end of the brace block, or 0
5500 if we call do_spec_1 and that returns -1. */
5501
5502static const char *
5503handle_braces (const char *p)
5504{
5505 const char *atom, *end_atom;
5506 const char *d_atom = NULL, *d_end_atom = NULL;
5507
5508 bool a_is_suffix;
5509 bool a_is_starred;
5510 bool a_is_negated;
5511 bool a_matched;
5512
5513 bool a_must_be_last = false;
5514 bool ordered_set = false;
5515 bool disjunct_set = false;
5516 bool disj_matched = false;
5517 bool disj_starred = true;
5518 bool n_way_choice = false;
5519 bool n_way_matched = false;
5520
5521#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5522
5523 do
5524 {
5525 if (a_must_be_last)
5526 abort ();
5527
5528 /* Scan one "atom" (S in the description above of %{}, possibly
5529 with !, ., or * modifiers). */
5530 a_matched = a_is_suffix = a_is_starred = a_is_negated = false;
5531
5532 SKIP_WHITE();
5533 if (*p == '!')
5534 p++, a_is_negated = true;
5535
5536 SKIP_WHITE();
5537 if (*p == '.')
5538 p++, a_is_suffix = true;
5539
5540 atom = p;
5541 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5542 || *p == ',' || *p == '.' || *p == '@')
5543 p++;
5544 end_atom = p;
5545
5546 if (*p == '*')
5547 p++, a_is_starred = 1;
5548
5549 SKIP_WHITE();
5550 if (*p == '&' || *p == '}')
5551 {
5552 /* Substitute the switch(es) indicated by the current atom. */
5553 ordered_set = true;
5554 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5555 || atom == end_atom)
5556 abort ();
5557
5558 mark_matching_switches (atom, end_atom, a_is_starred);
5559
5560 if (*p == '}')
5561 process_marked_switches ();
5562 }
5563 else if (*p == '|' || *p == ':')
5564 {
5565 /* Substitute some text if the current atom appears as a switch
5566 or suffix. */
5567 disjunct_set = true;
5568 if (ordered_set)
5569 abort ();
5570
5571 if (atom == end_atom)
5572 {
5573 if (!n_way_choice || disj_matched || *p == '|'
5574 || a_is_negated || a_is_suffix || a_is_starred)
5575 abort ();
5576
5577 /* An empty term may appear as the last choice of an
5578 N-way choice set; it means "otherwise". */
5579 a_must_be_last = true;
5580 disj_matched = !n_way_matched;
5581 disj_starred = false;
5582 }
5583 else
5584 {
5585 if (a_is_suffix && a_is_starred)
5586 abort ();
5587
5588 if (!a_is_starred)
5589 disj_starred = false;
5590
5591 /* Don't bother testing this atom if we already have a
5592 match. */
5593 if (!disj_matched && !n_way_matched)
5594 {
5595 if (a_is_suffix)
5596 a_matched = input_suffix_matches (atom, end_atom);
5597 else
5598 a_matched = switch_matches (atom, end_atom, a_is_starred);
5599
5600 if (a_matched != a_is_negated)
5601 {
5602 disj_matched = true;
5603 d_atom = atom;
5604 d_end_atom = end_atom;
5605 }
5606 }
5607 }
5608
5609 if (*p == ':')
5610 {
5611 /* Found the body, that is, the text to substitute if the
5612 current disjunction matches. */
5613 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5614 disj_matched && !n_way_matched);
5615 if (p == 0)
5616 return 0;
5617
5618 /* If we have an N-way choice, reset state for the next
5619 disjunction. */
5620 if (*p == ';')
5621 {
5622 n_way_choice = true;
5623 n_way_matched |= disj_matched;
5624 disj_matched = false;
5625 disj_starred = true;
5626 d_atom = d_end_atom = NULL;
5627 }
5628 }
5629 }
5630 else
5631 abort ();
5632 }
5633 while (*p++ != '}');
5634
5635 return p;
5636
5637#undef SKIP_WHITE
5638}
5639
5640/* Subroutine of handle_braces. Scan and process a brace substitution body
5641 (X in the description of %{} syntax). P points one past the colon;
5642 ATOM and END_ATOM bracket the first atom which was found to be true
5643 (present) in the current disjunction; STARRED indicates whether all
5644 the atoms in the current disjunction were starred (for syntax validation);
5645 MATCHED indicates whether the disjunction matched or not, and therefore
5646 whether or not the body is to be processed through do_spec_1 or just
5647 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5648 returns -1. */
5649
5650static const char *
5651process_brace_body (const char *p, const char *atom, const char *end_atom,
5652 int starred, int matched)
5653{
5654 const char *body, *end_body;
5655 unsigned int nesting_level;
5656 bool have_subst = false;
5657
5658 /* Locate the closing } or ;, honoring nested braces.
5659 Trim trailing whitespace. */
5660 body = p;
5661 nesting_level = 1;
5662 for (;;)
5663 {
5664 if (*p == '{')
5665 nesting_level++;
5666 else if (*p == '}')
5667 {
5668 if (!--nesting_level)
5669 break;
5670 }
5671 else if (*p == ';' && nesting_level == 1)
5672 break;
5673 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5674 have_subst = true;
5675 else if (*p == '\0')
5676 abort ();
5677 p++;
5678 }
5679
5680 end_body = p;
5681 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5682 end_body--;
5683
5684 if (have_subst && !starred)
5685 abort ();
5686
5687 if (matched)
5688 {
5689 /* Copy the substitution body to permanent storage and execute it.
5690 If have_subst is false, this is a simple matter of running the
5691 body through do_spec_1... */
5692 char *string = save_string (body, end_body - body);
5693 if (!have_subst)
5694 {
5695 if (do_spec_1 (string, 0, NULL) < 0)
5696 return 0;
5697 }
5698 else
5699 {
5700 /* ... but if have_subst is true, we have to process the
5701 body once for each matching switch, with %* set to the
5702 variant part of the switch. */
5703 unsigned int hard_match_len = end_atom - atom;
5704 int i;
5705
5706 for (i = 0; i < n_switches; i++)
5707 if (!strncmp (switches[i].part1, atom, hard_match_len)
5708 && check_live_switch (i, hard_match_len))
5709 {
5710 if (do_spec_1 (string, 0,
5711 &switches[i].part1[hard_match_len]) < 0)
5712 return 0;
5713 /* Pass any arguments this switch has. */
5714 give_switch (i, 1);
5715 suffix_subst = NULL;
5716 }
5717 }
5718 }
5719
5720 return p;
5721}
5722
5723/* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5724 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5725 spec, or -1 if either exact match or %* is used.
5726
5727 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5728 whose value does not begin with "no-" is obsoleted by the same value
5729 with the "no-", similarly for a switch with the "no-" prefix. */
5730
5731static int
5732check_live_switch (int switchnum, int prefix_length)
5733{
5734 const char *name = switches[switchnum].part1;
5735 int i;
5736
5737 /* In the common case of {<at-most-one-letter>*}, a negating
5738 switch would always match, so ignore that case. We will just
5739 send the conflicting switches to the compiler phase. */
5740 if (prefix_length >= 0 && prefix_length <= 1)
5741 return 1;
5742
5743 /* If we already processed this switch and determined if it was
5744 live or not, return our past determination. */
5745 if (switches[switchnum].live_cond != 0)
5746 return switches[switchnum].live_cond > 0;
5747
5748 /* Now search for duplicate in a manner that depends on the name. */
5749 switch (*name)
5750 {
5751 case 'O':
5752 for (i = switchnum + 1; i < n_switches; i++)
5753 if (switches[i].part1[0] == 'O')
5754 {
5755 switches[switchnum].validated = 1;
5756 switches[switchnum].live_cond = SWITCH_FALSE;
5757 return 0;
5758 }
5759 break;
5760
5761 case 'W': case 'f': case 'm':
5762 if (! strncmp (name + 1, "no-", 3))
5763 {
5764 /* We have Xno-YYY, search for XYYY. */
5765 for (i = switchnum + 1; i < n_switches; i++)
5766 if (switches[i].part1[0] == name[0]
5767 && ! strcmp (&switches[i].part1[1], &name[4]))
5768 {
5769 switches[switchnum].validated = 1;
5770 switches[switchnum].live_cond = SWITCH_FALSE;
5771 return 0;
5772 }
5773 }
5774 else
5775 {
5776 /* We have XYYY, search for Xno-YYY. */
5777 for (i = switchnum + 1; i < n_switches; i++)
5778 if (switches[i].part1[0] == name[0]
5779 && switches[i].part1[1] == 'n'
5780 && switches[i].part1[2] == 'o'
5781 && switches[i].part1[3] == '-'
5782 && !strcmp (&switches[i].part1[4], &name[1]))
5783 {
5784 switches[switchnum].validated = 1;
5785 switches[switchnum].live_cond = SWITCH_FALSE;
5786 return 0;
5787 }
5788 }
5789 break;
5790 }
5791
5792 /* Otherwise the switch is live. */
5793 switches[switchnum].live_cond = SWITCH_LIVE;
5794 return 1;
5795}
5796
5797/* Pass a switch to the current accumulating command
5798 in the same form that we received it.
5799 SWITCHNUM identifies the switch; it is an index into
5800 the vector of switches gcc received, which is `switches'.
5801 This cannot fail since it never finishes a command line.
5802
5803 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5804
5805static void
5806give_switch (int switchnum, int omit_first_word)
5807{
5808 if (switches[switchnum].live_cond == SWITCH_IGNORE)
5809 return;
5810
5811 if (!omit_first_word)
5812 {
5813 do_spec_1 ("-", 0, NULL);
5814 do_spec_1 (switches[switchnum].part1, 1, NULL);
5815 }
5816
5817 if (switches[switchnum].args != 0)
5818 {
5819 const char **p;
5820 for (p = switches[switchnum].args; *p; p++)
5821 {
5822 const char *arg = *p;
5823
5824 do_spec_1 (" ", 0, NULL);
5825 if (suffix_subst)
5826 {
5827 unsigned length = strlen (arg);
5828 int dot = 0;
5829
5830 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5831 if (arg[length] == '.')
5832 {
5833 ((char *)arg)[length] = 0;
5834 dot = 1;
5835 break;
5836 }
5837 do_spec_1 (arg, 1, NULL);
5838 if (dot)
5839 ((char *)arg)[length] = '.';
5840 do_spec_1 (suffix_subst, 1, NULL);
5841 }
5842 else
5843 do_spec_1 (arg, 1, NULL);
5844 }
5845 }
5846
5847 do_spec_1 (" ", 0, NULL);
5848 switches[switchnum].validated = 1;
5849}
5850
5851/* Search for a file named NAME trying various prefixes including the
5852 user's -B prefix and some standard ones.
5853 Return the absolute file name found. If nothing is found, return NAME. */
5854
5855static const char *
5856find_file (const char *name)
5857{
5858 char *newname;
5859
5860 /* Try multilib_dir if it is defined. */
5861 if (multilib_os_dir != NULL)
5862 {
5863 newname = find_a_file (&startfile_prefixes, name, R_OK, 1);
5864
5865 /* If we don't find it in the multi library dir, then fall
5866 through and look for it in the normal places. */
5867 if (newname != NULL)
5868 return newname;
5869 }
5870
5871 newname = find_a_file (&startfile_prefixes, name, R_OK, 0);
5872 return newname ? newname : name;
5873}
5874
5875/* Determine whether a directory exists. If LINKER, return 0 for
5876 certain fixed names not needed by the linker. If not LINKER, it is
5877 only important to return 0 if the host machine has a small ARG_MAX
5878 limit. */
5879
5880static int
5881is_directory (const char *path1, const char *path2, int linker)
5882{
5883 int len1 = strlen (path1);
5884 int len2 = strlen (path2);
5885 char *path = alloca (3 + len1 + len2);
5886 char *cp;
5887 struct stat st;
5888
5889#ifndef SMALL_ARG_MAX
5890 if (! linker)
5891 return 1;
5892#endif
5893
5894 /* Construct the path from the two parts. Ensure the string ends with "/.".
5895 The resulting path will be a directory even if the given path is a
5896 symbolic link. */
5897 memcpy (path, path1, len1);
5898 memcpy (path + len1, path2, len2);
5899 cp = path + len1 + len2;
5900 if (!IS_DIR_SEPARATOR (cp[-1]))
5901 *cp++ = DIR_SEPARATOR;
5902 *cp++ = '.';
5903 *cp = '\0';
5904
5905#ifndef FREEBSD_NATIVE
5906 /* Exclude directories that the linker is known to search. */
5907 if (linker
5908 && ((cp - path == 6
5909 && strcmp (path, concat (dir_separator_str, "lib",
5910 dir_separator_str, ".", NULL)) == 0)
5911 || (cp - path == 10
5912 && strcmp (path, concat (dir_separator_str, "usr",
5913 dir_separator_str, "lib",
5914 dir_separator_str, ".", NULL)) == 0)))
5915 return 0;
5916#endif /* FREEBSD_NATIVE */
5917
5918 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5919}
5920
5921/* Set up the various global variables to indicate that we're processing
5922 the input file named FILENAME. */
5923
5924void
5925set_input (const char *filename)
5926{
5927 const char *p;
5928
5929 input_filename = filename;
5930 input_filename_length = strlen (input_filename);
5931
5932 input_basename = input_filename;
5933#ifdef HAVE_DOS_BASED_FILE_SYSTEM
5934 /* Skip drive name so 'x:foo' is handled properly. */
5935 if (input_basename[1] == ':')
5936 input_basename += 2;
5937#endif
5938 for (p = input_basename; *p; p++)
5939 if (IS_DIR_SEPARATOR (*p))
5940 input_basename = p + 1;
5941
5942 /* Find a suffix starting with the last period,
5943 and set basename_length to exclude that suffix. */
5944 basename_length = strlen (input_basename);
5945 suffixed_basename_length = basename_length;
5946 p = input_basename + basename_length;
5947 while (p != input_basename && *p != '.')
5948 --p;
5949 if (*p == '.' && p != input_basename)
5950 {
5951 basename_length = p - input_basename;
5952 input_suffix = p + 1;
5953 }
5954 else
5955 input_suffix = "";
5956
5957 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5958 we will need to do a stat on the input_filename. The
5959 INPUT_STAT_SET signals that the stat is needed. */
5960 input_stat_set = 0;
5961}
5962
5963/* On fatal signals, delete all the temporary files. */
5964
5965static void
5966fatal_error (int signum)
5967{
5968 signal (signum, SIG_DFL);
5969 delete_failure_queue ();
5970 delete_temp_files ();
5971 /* Get the same signal again, this time not handled,
5972 so its normal effect occurs. */
5973 kill (getpid (), signum);
5974}
5975
5976extern int main (int, const char **);
5977
5978int
5979main (int argc, const char **argv)
5980{
5981 size_t i;
5982 int value;
5983 int linker_was_run = 0;
5984 int num_linker_inputs = 0;
5985 char *explicit_link_files;
5986 char *specs_file;
5987 const char *p;
5988 struct user_specs *uptr;
5989
5990 p = argv[0] + strlen (argv[0]);
5991 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
5992 --p;
5993 programname = p;
5994
5995 xmalloc_set_program_name (programname);
5996
5997#ifdef GCC_DRIVER_HOST_INITIALIZATION
5998 /* Perform host dependent initialization when needed. */
5999 GCC_DRIVER_HOST_INITIALIZATION;
6000#endif
6001
6002 gcc_init_libintl ();
6003
6004 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6005 signal (SIGINT, fatal_error);
6006#ifdef SIGHUP
6007 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6008 signal (SIGHUP, fatal_error);
6009#endif
6010 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6011 signal (SIGTERM, fatal_error);
6012#ifdef SIGPIPE
6013 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6014 signal (SIGPIPE, fatal_error);
6015#endif
6016#ifdef SIGCHLD
6017 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6018 receive the signal. A different setting is inheritable */
6019 signal (SIGCHLD, SIG_DFL);
6020#endif
6021
6022 /* Allocate the argument vector. */
6023 alloc_args ();
6024
6025 obstack_init (&obstack);
6026
6027 /* Build multilib_select, et. al from the separate lines that make up each
6028 multilib selection. */
6029 {
6030 const char *const *q = multilib_raw;
6031 int need_space;
6032
6033 obstack_init (&multilib_obstack);
6034 while ((p = *q++) != (char *) 0)
6035 obstack_grow (&multilib_obstack, p, strlen (p));
6036
6037 obstack_1grow (&multilib_obstack, 0);
6038 multilib_select = obstack_finish (&multilib_obstack);
6039
6040 q = multilib_matches_raw;
6041 while ((p = *q++) != (char *) 0)
6042 obstack_grow (&multilib_obstack, p, strlen (p));
6043
6044 obstack_1grow (&multilib_obstack, 0);
6045 multilib_matches = obstack_finish (&multilib_obstack);
6046
6047 q = multilib_exclusions_raw;
6048 while ((p = *q++) != (char *) 0)
6049 obstack_grow (&multilib_obstack, p, strlen (p));
6050
6051 obstack_1grow (&multilib_obstack, 0);
6052 multilib_exclusions = obstack_finish (&multilib_obstack);
6053
6054 need_space = FALSE;
6055 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6056 {
6057 if (need_space)
6058 obstack_1grow (&multilib_obstack, ' ');
6059 obstack_grow (&multilib_obstack,
6060 multilib_defaults_raw[i],
6061 strlen (multilib_defaults_raw[i]));
6062 need_space = TRUE;
6063 }
6064
6065 obstack_1grow (&multilib_obstack, 0);
6066 multilib_defaults = obstack_finish (&multilib_obstack);
6067 }
6068
6069 /* Set up to remember the pathname of gcc and any options
6070 needed for collect. We use argv[0] instead of programname because
6071 we need the complete pathname. */
6072 obstack_init (&collect_obstack);
6073 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6074 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6075 putenv (obstack_finish (&collect_obstack));
6076
6077#ifdef INIT_ENVIRONMENT
6078 /* Set up any other necessary machine specific environment variables. */
6079 putenv (INIT_ENVIRONMENT);
6080#endif
6081
6082 /* Make a table of what switches there are (switches, n_switches).
6083 Make a table of specified input files (infiles, n_infiles).
6084 Decode switches that are handled locally. */
6085
6086 process_command (argc, argv);
6087
6088 /* Initialize the vector of specs to just the default.
6089 This means one element containing 0s, as a terminator. */
6090
6091 compilers = xmalloc (sizeof default_compilers);
6092 memcpy (compilers, default_compilers, sizeof default_compilers);
6093 n_compilers = n_default_compilers;
6094
6095 /* Read specs from a file if there is one. */
6096
6097#ifdef FREEBSD_NATIVE
6098 just_machine_suffix = "";
6099#else /* FREEBSD_NATIVE */
6100 machine_suffix = concat (spec_machine, dir_separator_str,
6101 spec_version, dir_separator_str, NULL);
6102 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6103#endif /* FREEBSD_NATIVE */
6104
6105 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, 0);
6106 /* Read the specs file unless it is a default one. */
6107 if (specs_file != 0 && strcmp (specs_file, "specs"))
6108 read_specs (specs_file, TRUE);
6109 else
6110 init_spec ();
6111
6112 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6113 for any override of as, ld and libraries. */
6114 specs_file = (char *) alloca (strlen (FBSD_DATA_PREFIX)
6115 + strlen (just_machine_suffix)
6116 + sizeof ("specs"));
6117
6118 strcpy (specs_file, FBSD_DATA_PREFIX);
6119 strcat (specs_file, just_machine_suffix);
6120 strcat (specs_file, "specs");
6121 if (access (specs_file, R_OK) == 0)
6122 read_specs (specs_file, TRUE);
6123
6124 /* Process any configure-time defaults specified for the command line
6125 options, via OPTION_DEFAULT_SPECS. */
6126 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6127 do_option_spec (option_default_specs[i].name,
6128 option_default_specs[i].spec);
6129
6130 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6131 of the command line. */
6132
6133 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6134 do_self_spec (driver_self_specs[i]);
6135
6136 /* If not cross-compiling, look for executables in the standard
6137 places. */
6138 if (*cross_compile == '0')
6139 {
6140 if (*md_exec_prefix)
6141 {
6142 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6143 PREFIX_PRIORITY_LAST, 0, NULL, 0);
6144 }
6145 }
6146
6147 /* Process sysroot_suffix_spec. */
6148 if (*sysroot_suffix_spec != 0
6149 && do_spec_2 (sysroot_suffix_spec) == 0)
6150 {
6151 if (argbuf_index > 1)
6152 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC.");
6153 else if (argbuf_index == 1)
6154 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6155 }
6156
6157 /* Process sysroot_hdrs_suffix_spec. */
6158 if (*sysroot_hdrs_suffix_spec != 0
6159 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6160 {
6161 if (argbuf_index > 1)
6162 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC.");
6163 else if (argbuf_index == 1)
6164 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6165 }
6166
6167 /* Look for startfiles in the standard places. */
6168 if (*startfile_prefix_spec != 0
6169 && do_spec_2 (startfile_prefix_spec) == 0
6170 && do_spec_1 (" ", 0, NULL) == 0)
6171 {
6172 int ndx;
6173 for (ndx = 0; ndx < argbuf_index; ndx++)
6174 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6175 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6176 }
6177 /* We should eventually get rid of all these and stick to
6178 startfile_prefix_spec exclusively. */
6179 else if (*cross_compile == '0' || target_system_root)
6180 {
6181 if (*md_exec_prefix)
6182 add_sysrooted_prefix (&startfile_prefixes, md_exec_prefix, "GCC",
6183 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6184
6185 if (*md_startfile_prefix)
6186 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6187 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6188
6189 if (*md_startfile_prefix_1)
6190 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6191 "GCC", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6192
6193 /* If standard_startfile_prefix is relative, base it on
6194 standard_exec_prefix. This lets us move the installed tree
6195 as a unit. If GCC_EXEC_PREFIX is defined, base
6196 standard_startfile_prefix on that as well.
6197
6198 If the prefix is relative, only search it for native compilers;
6199 otherwise we will search a directory containing host libraries. */
6200 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6201 add_sysrooted_prefix (&startfile_prefixes,
6202 standard_startfile_prefix, "BINUTILS",
6203 PREFIX_PRIORITY_LAST, 0, NULL, 1);
6204 else if (*cross_compile == '0')
6205 {
6206 if (gcc_exec_prefix)
6207 add_prefix (&startfile_prefixes,
6208 concat (gcc_exec_prefix, machine_suffix,
6209 standard_startfile_prefix, NULL),
6210 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6211 add_prefix (&startfile_prefixes,
6212 concat (standard_exec_prefix,
6213 machine_suffix,
6214 standard_startfile_prefix, NULL),
6215 NULL, PREFIX_PRIORITY_LAST, 0, NULL, 1);
6216 }
6217
6218#ifndef FREEBSD_NATIVE
6219 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_1,
6220 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6221 add_sysrooted_prefix (&startfile_prefixes, standard_startfile_prefix_2,
6222 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL, 1);
6223#endif /* not FREEBSD_NATIVE */
6224#if 0 /* Can cause surprises, and one can use -B./ instead. */
6225 add_prefix (&startfile_prefixes, "./", NULL,
6226 PREFIX_PRIORITY_LAST, 1, NULL, 0);
6227#endif
6228 }
6229
6230 /* Process any user specified specs in the order given on the command
6231 line. */
6232 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6233 {
6234 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6235 R_OK, 0);
6236 read_specs (filename ? filename : uptr->filename, FALSE);
6237 }
6238
6239 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6240 if (gcc_exec_prefix)
6241 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6242 spec_version, dir_separator_str, NULL);
6243
6244 /* Now we have the specs.
6245 Set the `valid' bits for switches that match anything in any spec. */
6246
6247 validate_all_switches ();
6248
6249 /* Now that we have the switches and the specs, set
6250 the subdirectory based on the options. */
6251 set_multilib_dir ();
6252
6253 /* Warn about any switches that no pass was interested in. */
6254
6255 for (i = 0; (int) i < n_switches; i++)
6256 if (! switches[i].validated)
6257 error ("unrecognized option `-%s'", switches[i].part1);
6258
6259 /* Obey some of the options. */
6260
6261 if (print_search_dirs)
6262 {
6263 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix);
6264 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0));
6265 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0));
6266 return (0);
6267 }
6268
6269 if (print_file_name)
6270 {
6271 printf ("%s\n", find_file (print_file_name));
6272 return (0);
6273 }
6274
6275 if (print_prog_name)
6276 {
6277 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6278 printf ("%s\n", (newname ? newname : print_prog_name));
6279 return (0);
6280 }
6281
6282 if (print_multi_lib)
6283 {
6284 print_multilib_info ();
6285 return (0);
6286 }
6287
6288 if (print_multi_directory)
6289 {
6290 if (multilib_dir == NULL)
6291 printf (".\n");
6292 else
6293 printf ("%s\n", multilib_dir);
6294 return (0);
6295 }
6296
6297 if (print_multi_os_directory)
6298 {
6299 if (multilib_os_dir == NULL)
6300 printf (".\n");
6301 else
6302 printf ("%s\n", multilib_os_dir);
6303 return (0);
6304 }
6305
6306 if (target_help_flag)
6307 {
6308 /* Print if any target specific options. */
6309
6310 /* We do not exit here. Instead we have created a fake input file
6311 called 'target-dummy' which needs to be compiled, and we pass this
6312 on to the various sub-processes, along with the --target-help
6313 switch. */
6314 }
6315
6316 if (print_help_list)
6317 {
6318 display_help ();
6319
6320 if (! verbose_flag)
6321 {
6322 printf (_("\nFor bug reporting instructions, please see:\n"));
6323 printf ("%s.\n", bug_report_url);
6324
6325 return (0);
6326 }
6327
6328 /* We do not exit here. Instead we have created a fake input file
6329 called 'help-dummy' which needs to be compiled, and we pass this
6330 on the various sub-processes, along with the --help switch. */
6331 }
6332
6333 if (verbose_flag)
6334 {
6335 int n;
6336 const char *thrmod;
6337
6338 notice ("Configured with: %s\n", configuration_arguments);
6339
6340#ifdef THREAD_MODEL_SPEC
6341 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6342 but there's no point in doing all this processing just to get
6343 thread_model back. */
6344 obstack_init (&obstack);
6345 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6346 obstack_1grow (&obstack, '\0');
6347 thrmod = obstack_finish (&obstack);
6348#else
6349 thrmod = thread_model;
6350#endif
6351
6352 notice ("Thread model: %s\n", thrmod);
6353
6354 /* compiler_version is truncated at the first space when initialized
6355 from version string, so truncate version_string at the first space
6356 before comparing. */
6357 for (n = 0; version_string[n]; n++)
6358 if (version_string[n] == ' ')
6359 break;
6360
6361 if (! strncmp (version_string, compiler_version, n)
6362 && compiler_version[n] == 0)
6363 notice ("gcc version %s\n", version_string);
6364 else
6365 notice ("gcc driver version %s executing gcc version %s\n",
6366 version_string, compiler_version);
6367
6368 if (n_infiles == 0)
6369 return (0);
6370 }
6371
6372 if (n_infiles == added_libraries)
6373 fatal ("No input files specified");
6374
6375 /* Make a place to record the compiler output file names
6376 that correspond to the input files. */
6377
6378 i = n_infiles;
6379 i += lang_specific_extra_outfiles;
6380 outfiles = xcalloc (i, sizeof (char *));
6381
6382 /* Record which files were specified explicitly as link input. */
6383
6384 explicit_link_files = xcalloc (1, n_infiles);
6385
6386 if (combine_inputs)
6387 {
6388 int lang_n_infiles = 0;
6389 for (i = 0; (int) i < n_infiles; i++)
6390 {
6391 const char *name = infiles[i].name;
6392 struct compiler *compiler
6393 = lookup_compiler (name, strlen (name), infiles[i].language);
6394 if (compiler == NULL)
6395 error ("%s: linker input file unused because linking not done",
6396 name);
6397 else if (lang_n_infiles > 0 && compiler != input_file_compiler)
6398 fatal ("cannot specify -o with -c or -S and multiple languages");
6399 else
6400 {
6401 lang_n_infiles++;
6402 input_file_compiler = compiler;
6403 }
6404 }
6405 }
6406
6407 for (i = 0; (int) i < (combine_inputs ? 1 : n_infiles); i++)
6408 {
6409 int this_file_error = 0;
6410
6411 /* Tell do_spec what to substitute for %i. */
6412
6413 input_file_number = i;
6414 set_input (infiles[i].name);
6415
6416 /* Use the same thing in %o, unless cp->spec says otherwise. */
6417
6418 outfiles[i] = input_filename;
6419
6420 /* Figure out which compiler from the file's suffix. */
6421
6422 if (! combine_inputs)
6423 input_file_compiler
6424 = lookup_compiler (infiles[i].name, input_filename_length,
6425 infiles[i].language);
6426
6427 if (input_file_compiler)
6428 {
6429 /* Ok, we found an applicable compiler. Run its spec. */
6430
6431 if (input_file_compiler->spec[0] == '#')
6432 {
6433 error ("%s: %s compiler not installed on this system",
6434 input_filename, &input_file_compiler->spec[1]);
6435 this_file_error = 1;
6436 }
6437 else
6438 {
6439 value = do_spec (input_file_compiler->spec);
6440 if (value < 0)
6441 this_file_error = 1;
6442 }
6443 }
6444
6445 /* If this file's name does not contain a recognized suffix,
6446 record it as explicit linker input. */
6447
6448 else
6449 explicit_link_files[i] = 1;
6450
6451 /* Clear the delete-on-failure queue, deleting the files in it
6452 if this compilation failed. */
6453
6454 if (this_file_error)
6455 {
6456 delete_failure_queue ();
6457 error_count++;
6458 }
6459 /* If this compilation succeeded, don't delete those files later. */
6460 clear_failure_queue ();
6461 }
6462
6463 /* Reset the output file name to the first input file name, for use
6464 with %b in LINK_SPEC on a target that prefers not to emit a.out
6465 by default. */
6466 if (n_infiles > 0)
6467 set_input (infiles[0].name);
6468
6469 if (error_count == 0)
6470 {
6471 /* Make sure INPUT_FILE_NUMBER points to first available open
6472 slot. */
6473 input_file_number = n_infiles;
6474 if (lang_specific_pre_link ())
6475 error_count++;
6476 }
6477
6478 /* Determine if there are any linker input files. */
6479 num_linker_inputs = 0;
6480 for (i = 0; (int) i < n_infiles; i++)
6481 if (explicit_link_files[i] || outfiles[i] != NULL)
6482 num_linker_inputs++;
6483
6484 /* Run ld to link all the compiler output files. */
6485
6486 if (num_linker_inputs > 0 && error_count == 0)
6487 {
6488 int tmp = execution_count;
6489
6490 /* We'll use ld if we can't find collect2. */
6491 if (! strcmp (linker_name_spec, "collect2"))
6492 {
6493 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, 0);
6494 if (s == NULL)
6495 linker_name_spec = "ld";
6496 }
6497 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6498 for collect. */
6499 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH");
6500 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV);
6501
6502 value = do_spec (link_command_spec);
6503 if (value < 0)
6504 error_count = 1;
6505 linker_was_run = (tmp != execution_count);
6506 }
6507
6508 /* If options said don't run linker,
6509 complain about input files to be given to the linker. */
6510
6511 if (! linker_was_run && error_count == 0)
6512 for (i = 0; (int) i < n_infiles; i++)
6513 if (explicit_link_files[i])
6514 error ("%s: linker input file unused because linking not done",
6515 outfiles[i]);
6516
6517 /* Delete some or all of the temporary files we made. */
6518
6519 if (error_count)
6520 delete_failure_queue ();
6521 delete_temp_files ();
6522
6523 if (print_help_list)
6524 {
6525 printf (("\nFor bug reporting instructions, please see:\n"));
6526 printf ("%s\n", bug_report_url);
6527 }
6528
6529 return (signal_count != 0 ? 2
6530 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1)
6531 : 0);
6532}
6533
6534/* Find the proper compilation spec for the file name NAME,
6535 whose length is LENGTH. LANGUAGE is the specified language,
6536 or 0 if this file is to be passed to the linker. */
6537
6538static struct compiler *
6539lookup_compiler (const char *name, size_t length, const char *language)
6540{
6541 struct compiler *cp;
6542
6543 /* If this was specified by the user to be a linker input, indicate that. */
6544 if (language != 0 && language[0] == '*')
6545 return 0;
6546
6547 /* Otherwise, look for the language, if one is spec'd. */
6548 if (language != 0)
6549 {
6550 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6551 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6552 return cp;
6553
6554 error ("language %s not recognized", language);
6555 return 0;
6556 }
6557
6558 /* Look for a suffix. */
6559 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6560 {
6561 if (/* The suffix `-' matches only the file name `-'. */
6562 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6563 || (strlen (cp->suffix) < length
6564 /* See if the suffix matches the end of NAME. */
6565 && !strcmp (cp->suffix,
6566 name + length - strlen (cp->suffix))
6567 ))
6568 break;
6569 }
6570
6571#if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6572 /* look again, but case-insensitively this time. */
6573 if (cp < compilers)
6574 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6575 {
6576 if (/* The suffix `-' matches only the file name `-'. */
6577 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6578 || (strlen (cp->suffix) < length
6579 /* See if the suffix matches the end of NAME. */
6580 && ((!strcmp (cp->suffix,
6581 name + length - strlen (cp->suffix))
6582 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6583 && !strcasecmp (cp->suffix,
6584 name + length - strlen (cp->suffix)))
6585 ))
6586 break;
6587 }
6588#endif
6589
6590 if (cp >= compilers)
6591 {
6592 if (cp->spec[0] != '@')
6593 /* A non-alias entry: return it. */
6594 return cp;
6595
6596 /* An alias entry maps a suffix to a language.
6597 Search for the language; pass 0 for NAME and LENGTH
6598 to avoid infinite recursion if language not found. */
6599 return lookup_compiler (NULL, 0, cp->spec + 1);
6600 }
6601 return 0;
6602}
6603
6604static char *
6605save_string (const char *s, int len)
6606{
6607 char *result = xmalloc (len + 1);
6608
6609 memcpy (result, s, len);
6610 result[len] = 0;
6611 return result;
6612}
6613
6614void
6615pfatal_with_name (const char *name)
6616{
6617 perror_with_name (name);
6618 delete_temp_files ();
6619 exit (1);
6620}
6621
6622static void
6623perror_with_name (const char *name)
6624{
6625 error ("%s: %s", name, xstrerror (errno));
6626}
6627
6628static void
6629pfatal_pexecute (const char *errmsg_fmt, const char *errmsg_arg)
6630{
6631 if (errmsg_arg)
6632 {
6633 int save_errno = errno;
6634
6635 /* Space for trailing '\0' is in %s. */
6636 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg));
6637 sprintf (msg, errmsg_fmt, errmsg_arg);
6638 errmsg_fmt = msg;
6639
6640 errno = save_errno;
6641 }
6642
6643 pfatal_with_name (errmsg_fmt);
6644}
6645
6646/* Output an error message and exit. */
6647
6648void
6649fancy_abort (void)
6650{
6651 fatal ("internal gcc abort");
6652}
6653
6654/* Output an error message and exit. */
6655
6656void
6657fatal (const char *msgid, ...)
6658{
6659 va_list ap;
6660
6661 va_start (ap, msgid);
6662
6663 fprintf (stderr, "%s: ", programname);
6664 vfprintf (stderr, _(msgid), ap);
6665 va_end (ap);
6666 fprintf (stderr, "\n");
6667 delete_temp_files ();
6668 exit (1);
6669}
6670
6671void
6672error (const char *msgid, ...)
6673{
6674 va_list ap;
6675
6676 va_start (ap, msgid);
6677 fprintf (stderr, "%s: ", programname);
6678 vfprintf (stderr, _(msgid), ap);
6679 va_end (ap);
6680
6681 fprintf (stderr, "\n");
6682}
6683
6684static void
6685notice (const char *msgid, ...)
6686{
6687 va_list ap;
6688
6689 va_start (ap, msgid);
6690 vfprintf (stderr, _(msgid), ap);
6691 va_end (ap);
6692}
6693
6694static inline void
6695validate_switches_from_spec (const char *spec)
6696{
6697 const char *p = spec;
6698 char c;
6699 while ((c = *p++))
6700 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6701 /* We have a switch spec. */
6702 p = validate_switches (p + 1);
6703}
6704
6705static void
6706validate_all_switches (void)
6707{
6708 struct compiler *comp;
6709 struct spec_list *spec;
6710
6711 for (comp = compilers; comp->spec; comp++)
6712 validate_switches_from_spec (comp->spec);
6713
6714 /* Look through the linked list of specs read from the specs file. */
6715 for (spec = specs; spec; spec = spec->next)
6716 validate_switches_from_spec (*spec->ptr_spec);
6717
6718 validate_switches_from_spec (link_command_spec);
6719}
6720
6721/* Look at the switch-name that comes after START
6722 and mark as valid all supplied switches that match it. */
6723
6724static const char *
6725validate_switches (const char *start)
6726{
6727 const char *p = start;
6728 const char *atom;
6729 size_t len;
6730 int i;
6731 bool suffix = false;
6732 bool starred = false;
6733
6734#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
6735
6736next_member:
6737 SKIP_WHITE ();
6738
6739 if (*p == '!')
6740 p++;
6741
6742 SKIP_WHITE ();
6743 if (*p == '.')
6744 suffix = true, p++;
6745
6746 atom = p;
6747 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
6748 || *p == ',' || *p == '.' || *p == '@')
6749 p++;
6750 len = p - atom;
6751
6752 if (*p == '*')
6753 starred = true, p++;
6754
6755 SKIP_WHITE ();
6756
6757 if (!suffix)
6758 {
6759 /* Mark all matching switches as valid. */
6760 for (i = 0; i < n_switches; i++)
6761 if (!strncmp (switches[i].part1, atom, len)
6762 && (starred || switches[i].part1[len] == 0))
6763 switches[i].validated = 1;
6764 }
6765
6766 if (*p) p++;
6767 if (*p && (p[-1] == '|' || p[-1] == '&'))
6768 goto next_member;
6769
6770 if (*p && p[-1] == ':')
6771 {
6772 while (*p && *p != ';' && *p != '}')
6773 {
6774 if (*p == '%')
6775 {
6776 p++;
6777 if (*p == '{' || *p == '<')
6778 p = validate_switches (p+1);
6779 else if (p[0] == 'W' && p[1] == '{')
6780 p = validate_switches (p+2);
6781 }
6782 else
6783 p++;
6784 }
6785
6786 if (*p) p++;
6787 if (*p && p[-1] == ';')
6788 goto next_member;
6789 }
6790
6791 return p;
6792#undef SKIP_WHITE
6793}
6794
6795struct mdswitchstr
6796{
6797 const char *str;
6798 int len;
6799};
6800
6801static struct mdswitchstr *mdswitches;
6802static int n_mdswitches;
6803
6804/* Check whether a particular argument was used. The first time we
6805 canonicalize the switches to keep only the ones we care about. */
6806
6807static int
6808used_arg (const char *p, int len)
6809{
6810 struct mswitchstr
6811 {
6812 const char *str;
6813 const char *replace;
6814 int len;
6815 int rep_len;
6816 };
6817
6818 static struct mswitchstr *mswitches;
6819 static int n_mswitches;
6820 int i, j;
6821
6822 if (!mswitches)
6823 {
6824 struct mswitchstr *matches;
6825 const char *q;
6826 int cnt = 0;
6827
6828 /* Break multilib_matches into the component strings of string
6829 and replacement string. */
6830 for (q = multilib_matches; *q != '\0'; q++)
6831 if (*q == ';')
6832 cnt++;
6833
6834 matches = alloca ((sizeof (struct mswitchstr)) * cnt);
6835 i = 0;
6836 q = multilib_matches;
6837 while (*q != '\0')
6838 {
6839 matches[i].str = q;
6840 while (*q != ' ')
6841 {
6842 if (*q == '\0')
6843 abort ();
6844 q++;
6845 }
6846 matches[i].len = q - matches[i].str;
6847
6848 matches[i].replace = ++q;
6849 while (*q != ';' && *q != '\0')
6850 {
6851 if (*q == ' ')
6852 abort ();
6853 q++;
6854 }
6855 matches[i].rep_len = q - matches[i].replace;
6856 i++;
6857 if (*q == ';')
6858 q++;
6859 }
6860
6861 /* Now build a list of the replacement string for switches that we care
6862 about. Make sure we allocate at least one entry. This prevents
6863 xmalloc from calling fatal, and prevents us from re-executing this
6864 block of code. */
6865 mswitches
6866 = xmalloc (sizeof (struct mswitchstr)
6867 * (n_mdswitches + (n_switches ? n_switches : 1)));
6868 for (i = 0; i < n_switches; i++)
6869 {
6870 int xlen = strlen (switches[i].part1);
6871 for (j = 0; j < cnt; j++)
6872 if (xlen == matches[j].len
6873 && ! strncmp (switches[i].part1, matches[j].str, xlen))
6874 {
6875 mswitches[n_mswitches].str = matches[j].replace;
6876 mswitches[n_mswitches].len = matches[j].rep_len;
6877 mswitches[n_mswitches].replace = (char *) 0;
6878 mswitches[n_mswitches].rep_len = 0;
6879 n_mswitches++;
6880 break;
6881 }
6882 }
6883
6884 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
6885 on the command line nor any options mutually incompatible with
6886 them. */
6887 for (i = 0; i < n_mdswitches; i++)
6888 {
6889 const char *r;
6890
6891 for (q = multilib_options; *q != '\0'; q++)
6892 {
6893 while (*q == ' ')
6894 q++;
6895
6896 r = q;
6897 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
6898 || strchr (" /", q[mdswitches[i].len]) == NULL)
6899 {
6900 while (*q != ' ' && *q != '/' && *q != '\0')
6901 q++;
6902 if (*q != '/')
6903 break;
6904 q++;
6905 }
6906
6907 if (*q != ' ' && *q != '\0')
6908 {
6909 while (*r != ' ' && *r != '\0')
6910 {
6911 q = r;
6912 while (*q != ' ' && *q != '/' && *q != '\0')
6913 q++;
6914
6915 if (used_arg (r, q - r))
6916 break;
6917
6918 if (*q != '/')
6919 {
6920 mswitches[n_mswitches].str = mdswitches[i].str;
6921 mswitches[n_mswitches].len = mdswitches[i].len;
6922 mswitches[n_mswitches].replace = (char *) 0;
6923 mswitches[n_mswitches].rep_len = 0;
6924 n_mswitches++;
6925 break;
6926 }
6927
6928 r = q + 1;
6929 }
6930 break;
6931 }
6932 }
6933 }
6934 }
6935
6936 for (i = 0; i < n_mswitches; i++)
6937 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
6938 return 1;
6939
6940 return 0;
6941}
6942
6943static int
6944default_arg (const char *p, int len)
6945{
6946 int i;
6947
6948 for (i = 0; i < n_mdswitches; i++)
6949 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
6950 return 1;
6951
6952 return 0;
6953}
6954
6955/* Work out the subdirectory to use based on the options. The format of
6956 multilib_select is a list of elements. Each element is a subdirectory
6957 name followed by a list of options followed by a semicolon. The format
6958 of multilib_exclusions is the same, but without the preceding
6959 directory. First gcc will check the exclusions, if none of the options
6960 beginning with an exclamation point are present, and all of the other
6961 options are present, then we will ignore this completely. Passing
6962 that, gcc will consider each multilib_select in turn using the same
6963 rules for matching the options. If a match is found, that subdirectory
6964 will be used. */
6965
6966static void
6967set_multilib_dir (void)
6968{
6969 const char *p;
6970 unsigned int this_path_len;
6971 const char *this_path, *this_arg;
6972 const char *start, *end;
6973 int not_arg;
6974 int ok, ndfltok, first;
6975
6976 n_mdswitches = 0;
6977 start = multilib_defaults;
6978 while (*start == ' ' || *start == '\t')
6979 start++;
6980 while (*start != '\0')
6981 {
6982 n_mdswitches++;
6983 while (*start != ' ' && *start != '\t' && *start != '\0')
6984 start++;
6985 while (*start == ' ' || *start == '\t')
6986 start++;
6987 }
6988
6989 if (n_mdswitches)
6990 {
6991 int i = 0;
6992
6993 mdswitches = xmalloc (sizeof (struct mdswitchstr) * n_mdswitches);
6994 for (start = multilib_defaults; *start != '\0'; start = end + 1)
6995 {
6996 while (*start == ' ' || *start == '\t')
6997 start++;
6998
6999 if (*start == '\0')
7000 break;
7001
7002 for (end = start + 1;
7003 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7004 ;
7005
7006 obstack_grow (&multilib_obstack, start, end - start);
7007 obstack_1grow (&multilib_obstack, 0);
7008 mdswitches[i].str = obstack_finish (&multilib_obstack);
7009 mdswitches[i++].len = end - start;
7010
7011 if (*end == '\0')
7012 break;
7013 }
7014 }
7015
7016 p = multilib_exclusions;
7017 while (*p != '\0')
7018 {
7019 /* Ignore newlines. */
7020 if (*p == '\n')
7021 {
7022 ++p;
7023 continue;
7024 }
7025
7026 /* Check the arguments. */
7027 ok = 1;
7028 while (*p != ';')
7029 {
7030 if (*p == '\0')
7031 abort ();
7032
7033 if (! ok)
7034 {
7035 ++p;
7036 continue;
7037 }
7038
7039 this_arg = p;
7040 while (*p != ' ' && *p != ';')
7041 {
7042 if (*p == '\0')
7043 abort ();
7044 ++p;
7045 }
7046
7047 if (*this_arg != '!')
7048 not_arg = 0;
7049 else
7050 {
7051 not_arg = 1;
7052 ++this_arg;
7053 }
7054
7055 ok = used_arg (this_arg, p - this_arg);
7056 if (not_arg)
7057 ok = ! ok;
7058
7059 if (*p == ' ')
7060 ++p;
7061 }
7062
7063 if (ok)
7064 return;
7065
7066 ++p;
7067 }
7068
7069 first = 1;
7070 p = multilib_select;
7071 while (*p != '\0')
7072 {
7073 /* Ignore newlines. */
7074 if (*p == '\n')
7075 {
7076 ++p;
7077 continue;
7078 }
7079
7080 /* Get the initial path. */
7081 this_path = p;
7082 while (*p != ' ')
7083 {
7084 if (*p == '\0')
7085 abort ();
7086 ++p;
7087 }
7088 this_path_len = p - this_path;
7089
7090 /* Check the arguments. */
7091 ok = 1;
7092 ndfltok = 1;
7093 ++p;
7094 while (*p != ';')
7095 {
7096 if (*p == '\0')
7097 abort ();
7098
7099 if (! ok)
7100 {
7101 ++p;
7102 continue;
7103 }
7104
7105 this_arg = p;
7106 while (*p != ' ' && *p != ';')
7107 {
7108 if (*p == '\0')
7109 abort ();
7110 ++p;
7111 }
7112
7113 if (*this_arg != '!')
7114 not_arg = 0;
7115 else
7116 {
7117 not_arg = 1;
7118 ++this_arg;
7119 }
7120
7121 /* If this is a default argument, we can just ignore it.
7122 This is true even if this_arg begins with '!'. Beginning
7123 with '!' does not mean that this argument is necessarily
7124 inappropriate for this library: it merely means that
7125 there is a more specific library which uses this
7126 argument. If this argument is a default, we need not
7127 consider that more specific library. */
7128 ok = used_arg (this_arg, p - this_arg);
7129 if (not_arg)
7130 ok = ! ok;
7131
7132 if (! ok)
7133 ndfltok = 0;
7134
7135 if (default_arg (this_arg, p - this_arg))
7136 ok = 1;
7137
7138 if (*p == ' ')
7139 ++p;
7140 }
7141
7142 if (ok && first)
7143 {
7144 if (this_path_len != 1
7145 || this_path[0] != '.')
7146 {
7147 char *new_multilib_dir = xmalloc (this_path_len + 1);
7148 char *q;
7149
7150 strncpy (new_multilib_dir, this_path, this_path_len);
7151 new_multilib_dir[this_path_len] = '\0';
7152 q = strchr (new_multilib_dir, ':');
7153 if (q != NULL)
7154 *q = '\0';
7155 multilib_dir = new_multilib_dir;
7156 }
7157 first = 0;
7158 }
7159
7160 if (ndfltok)
7161 {
7162 const char *q = this_path, *end = this_path + this_path_len;
7163
7164 while (q < end && *q != ':')
7165 q++;
7166 if (q < end)
7167 {
7168 char *new_multilib_os_dir = xmalloc (end - q);
7169 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7170 new_multilib_os_dir[end - q - 1] = '\0';
7171 multilib_os_dir = new_multilib_os_dir;
7172 break;
7173 }
7174 }
7175
7176 ++p;
7177 }
7178
7179 if (multilib_dir == NULL && multilib_os_dir != NULL
7180 && strcmp (multilib_os_dir, ".") == 0)
7181 {
7182 free ((char *) multilib_os_dir);
7183 multilib_os_dir = NULL;
7184 }
7185 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7186 multilib_os_dir = multilib_dir;
7187}
7188
7189/* Print out the multiple library subdirectory selection
7190 information. This prints out a series of lines. Each line looks
7191 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7192 required. Only the desired options are printed out, the negative
7193 matches. The options are print without a leading dash. There are
7194 no spaces to make it easy to use the information in the shell.
7195 Each subdirectory is printed only once. This assumes the ordering
7196 generated by the genmultilib script. Also, we leave out ones that match
7197 the exclusions. */
7198
7199static void
7200print_multilib_info (void)
7201{
7202 const char *p = multilib_select;
7203 const char *last_path = 0, *this_path;
7204 int skip;
7205 unsigned int last_path_len = 0;
7206
7207 while (*p != '\0')
7208 {
7209 skip = 0;
7210 /* Ignore newlines. */
7211 if (*p == '\n')
7212 {
7213 ++p;
7214 continue;
7215 }
7216
7217 /* Get the initial path. */
7218 this_path = p;
7219 while (*p != ' ')
7220 {
7221 if (*p == '\0')
7222 abort ();
7223 ++p;
7224 }
7225
7226 /* When --disable-multilib was used but target defines
7227 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7228 to find multilib_os_dir, so skip them from output. */
7229 if (this_path[0] == '.' && this_path[1] == ':')
7230 skip = 1;
7231
7232 /* Check for matches with the multilib_exclusions. We don't bother
7233 with the '!' in either list. If any of the exclusion rules match
7234 all of its options with the select rule, we skip it. */
7235 {
7236 const char *e = multilib_exclusions;
7237 const char *this_arg;
7238
7239 while (*e != '\0')
7240 {
7241 int m = 1;
7242 /* Ignore newlines. */
7243 if (*e == '\n')
7244 {
7245 ++e;
7246 continue;
7247 }
7248
7249 /* Check the arguments. */
7250 while (*e != ';')
7251 {
7252 const char *q;
7253 int mp = 0;
7254
7255 if (*e == '\0')
7256 abort ();
7257
7258 if (! m)
7259 {
7260 ++e;
7261 continue;
7262 }
7263
7264 this_arg = e;
7265
7266 while (*e != ' ' && *e != ';')
7267 {
7268 if (*e == '\0')
7269 abort ();
7270 ++e;
7271 }
7272
7273 q = p + 1;
7274 while (*q != ';')
7275 {
7276 const char *arg;
7277 int len = e - this_arg;
7278
7279 if (*q == '\0')
7280 abort ();
7281
7282 arg = q;
7283
7284 while (*q != ' ' && *q != ';')
7285 {
7286 if (*q == '\0')
7287 abort ();
7288 ++q;
7289 }
7290
7291 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) ||
7292 default_arg (this_arg, e - this_arg))
7293 {
7294 mp = 1;
7295 break;
7296 }
7297
7298 if (*q == ' ')
7299 ++q;
7300 }
7301
7302 if (! mp)
7303 m = 0;
7304
7305 if (*e == ' ')
7306 ++e;
7307 }
7308
7309 if (m)
7310 {
7311 skip = 1;
7312 break;
7313 }
7314
7315 if (*e != '\0')
7316 ++e;
7317 }
7318 }
7319
7320 if (! skip)
7321 {
7322 /* If this is a duplicate, skip it. */
7323 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len
7324 && ! strncmp (last_path, this_path, last_path_len));
7325
7326 last_path = this_path;
7327 last_path_len = p - this_path;
7328 }
7329
7330 /* If this directory requires any default arguments, we can skip
7331 it. We will already have printed a directory identical to
7332 this one which does not require that default argument. */
7333 if (! skip)
7334 {
7335 const char *q;
7336
7337 q = p + 1;
7338 while (*q != ';')
7339 {
7340 const char *arg;
7341
7342 if (*q == '\0')
7343 abort ();
7344
7345 if (*q == '!')
7346 arg = NULL;
7347 else
7348 arg = q;
7349
7350 while (*q != ' ' && *q != ';')
7351 {
7352 if (*q == '\0')
7353 abort ();
7354 ++q;
7355 }
7356
7357 if (arg != NULL
7358 && default_arg (arg, q - arg))
7359 {
7360 skip = 1;
7361 break;
7362 }
7363
7364 if (*q == ' ')
7365 ++q;
7366 }
7367 }
7368
7369 if (! skip)
7370 {
7371 const char *p1;
7372
7373 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7374 putchar (*p1);
7375 putchar (';');
7376 }
7377
7378 ++p;
7379 while (*p != ';')
7380 {
7381 int use_arg;
7382
7383 if (*p == '\0')
7384 abort ();
7385
7386 if (skip)
7387 {
7388 ++p;
7389 continue;
7390 }
7391
7392 use_arg = *p != '!';
7393
7394 if (use_arg)
7395 putchar ('@');
7396
7397 while (*p != ' ' && *p != ';')
7398 {
7399 if (*p == '\0')
7400 abort ();
7401 if (use_arg)
7402 putchar (*p);
7403 ++p;
7404 }
7405
7406 if (*p == ' ')
7407 ++p;
7408 }
7409
7410 if (! skip)
7411 {
7412 /* If there are extra options, print them now. */
7413 if (multilib_extra && *multilib_extra)
7414 {
7415 int print_at = TRUE;
7416 const char *q;
7417
7418 for (q = multilib_extra; *q != '\0'; q++)
7419 {
7420 if (*q == ' ')
7421 print_at = TRUE;
7422 else
7423 {
7424 if (print_at)
7425 putchar ('@');
7426 putchar (*q);
7427 print_at = FALSE;
7428 }
7429 }
7430 }
7431
7432 putchar ('\n');
7433 }
7434
7435 ++p;
7436 }
7437}
7438
7439/* if-exists built-in spec function.
7440
7441 Checks to see if the file specified by the absolute pathname in
7442 ARGS exists. Returns that pathname if found.
7443
7444 The usual use for this function is to check for a library file
7445 (whose name has been expanded with %s). */
7446
7447static const char *
7448if_exists_spec_function (int argc, const char **argv)
7449{
7450 /* Must have only one argument. */
7451 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7452 return argv[0];
7453
7454 return NULL;
7455}
7456
7457/* if-exists-else built-in spec function.
7458
7459 This is like if-exists, but takes an additional argument which
7460 is returned if the first argument does not exist. */
7461
7462static const char *
7463if_exists_else_spec_function (int argc, const char **argv)
7464{
7465 /* Must have exactly two arguments. */
7466 if (argc != 2)
7467 return NULL;
7468
7469 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7470 return argv[0];
7471
7472 return argv[1];
7473}
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