configure.ac revision 1.8
1# Process this file with autoreconf to produce a configure script. 2 3AC_PREREQ(2.64) 4AC_INIT(package-unused, version-unused,, libstdc++) 5AC_CONFIG_SRCDIR(src/shared/hashtable-aux.cc) 6AC_CONFIG_HEADER(config.h) 7 8# This works around the fact that libtool configuration may change LD 9# for this particular configuration, but some shells, instead of 10# keeping the changes in LD private, export them just because LD is 11# exported. Only used at the end of this file. 12### am handles this now? ORIGINAL_LD_FOR_MULTILIBS=$LD 13 14# Find the rest of the source tree framework. 15AM_ENABLE_MULTILIB(, ..) 16 17# Gets build, host, target, *_vendor, *_cpu, *_os, etc. 18# 19# You will slowly go insane if you do not grok the following fact: when 20# building v3 as part of the compiler, the top-level /target/ becomes the 21# library's /host/. configure then causes --target to default to --host, 22# exactly like any other package using autoconf. Therefore, 'target' and 23# 'host' will always be the same. This makes sense both for native and 24# cross compilers, just think about it for a little while. :-) 25# 26# Also, if v3 is being configured as part of a cross compiler, the top-level 27# configure script will pass the "real" host as $with_cross_host. 28# 29# Do not delete or change the following two lines. For why, see 30# http://gcc.gnu.org/ml/libstdc++/2003-07/msg00451.html 31AC_CANONICAL_SYSTEM 32target_alias=${target_alias-$host_alias} 33 34# Handy for debugging: 35#AC_MSG_NOTICE($build / $host / $target / $host_alias / $target_alias); sleep 5 36 37if test "$build" != "$host"; then 38 # We are being configured with some form of cross compiler. 39 GLIBCXX_IS_NATIVE=false 40 case "$host","$target" in 41 *-*-netbsd*,*-*-netbsd*) 42 GLIBCXX_IS_NATIVE=true 43 ;; 44 # Darwin crosses can use the host system's libraries and headers, 45 # because of the fat library support. Of course, it must be the 46 # same version of Darwin on both sides. Allow the user to 47 # just say --target=foo-darwin without a version number to mean 48 # "the version on this system". 49 *-*-darwin*,*-*-darwin*) 50 hostos=`echo $host | sed 's/.*-darwin/darwin/'` 51 targetos=`echo $target | sed 's/.*-darwin/darwin/'` 52 if test $hostos = $targetos -o $targetos = darwin ; then 53 GLIBCXX_IS_NATIVE=true 54 fi 55 ;; 56 57 *) 58 GCC_NO_EXECUTABLES 59 ;; 60 esac 61else 62 GLIBCXX_IS_NATIVE=true 63fi 64 65# Sets up automake. Must come after AC_CANONICAL_SYSTEM. Each of the 66# following is magically included in AUTOMAKE_OPTIONS in each Makefile.am. 67# 1.x: minimum required version 68# no-define: PACKAGE and VERSION will not be #define'd in config.h (a bunch 69# of other PACKAGE_* variables will, however, and there's nothing 70# we can do about that; they come from AC_INIT). 71# foreign: we don't follow the normal rules for GNU packages (no COPYING 72# file in the top srcdir, etc, etc), so stop complaining. 73# no-dependencies: turns off auto dependency generation (just for now) 74# no-dist: we don't want 'dist' and related rules. 75# -Wall: turns on all automake warnings... 76# -Wno-portability: ...except this one, since GNU make is now required. 77AM_INIT_AUTOMAKE([1.9.3 no-define foreign no-dependencies no-dist -Wall -Wno-portability -Wno-override]) 78AH_TEMPLATE(PACKAGE, [Name of package]) 79AH_TEMPLATE(VERSION, [Version number of package]) 80 81# -fno-builtin must be present here so that a non-conflicting form of 82# std::exit can be guessed by AC_PROG_CXX, and used in later tests. 83 84save_CXXFLAGS="$CXXFLAGS" 85CXXFLAGS="$CXXFLAGS -fno-builtin" 86AC_PROG_CC 87AC_PROG_CXX 88CXXFLAGS="$save_CXXFLAGS" 89 90AC_SYS_LARGEFILE 91 92# Runs configure.host, and assorted other critical bits. Sets 93# up critical shell variables. 94GLIBCXX_CONFIGURE 95 96# Libtool setup. 97if test "x${with_newlib}" != "xyes"; then 98 AC_LIBTOOL_DLOPEN 99fi 100AM_PROG_LIBTOOL 101ACX_LT_HOST_FLAGS 102AC_SUBST(enable_shared) 103AC_SUBST(enable_static) 104 105if test "$enable_vtable_verify" = yes; then 106 predep_objects_CXX="${predep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_start.o" 107 postdep_objects_CXX="${postdep_objects_CXX} ${glibcxx_builddir}/../libgcc/vtv_end.o" 108fi 109 110 111# libtool variables for C++ shared and position-independent compiles. 112# 113# Use glibcxx_lt_pic_flag to designate the automake variable 114# used to encapsulate the default libtool approach to creating objects 115# with position-independent code. Default: -prefer-pic. 116# 117# Use glibcxx_compiler_shared_flag to designate a compile-time flags for 118# creating shared objects. Default: -D_GLIBCXX_SHARED. 119# 120# Use glibcxx_compiler_pic_flag to designate a compile-time flags for 121# creating position-independent objects. This varies with the target 122# hardware and operating system, but is often: -DPIC -fPIC. 123if test "$enable_shared" = yes; then 124 glibcxx_lt_pic_flag="-prefer-pic" 125 glibcxx_compiler_pic_flag="$lt_prog_compiler_pic_CXX" 126 glibcxx_compiler_shared_flag="-D_GLIBCXX_SHARED" 127 128else 129 glibcxx_lt_pic_flag= 130 glibcxx_compiler_pic_flag= 131 glibcxx_compiler_shared_flag= 132fi 133AC_SUBST(glibcxx_lt_pic_flag) 134AC_SUBST(glibcxx_compiler_pic_flag) 135AC_SUBST(glibcxx_compiler_shared_flag) 136 137# Override the libtool's pic_flag and pic_mode. 138# Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT. 139# NB: this impacts --with-pic and --without-pic. 140lt_prog_compiler_pic_CXX="$glibcxx_compiler_pic_flag $glibcxx_compiler_shared_flag" 141pic_mode='default' 142 143# Eliminate -lstdc++ addition to postdeps for cross compiles. 144postdeps_CXX=`echo " $postdeps_CXX " | sed 's, -lstdc++ ,,g'` 145 146# Possibly disable most of the library. 147## TODO: Consider skipping unncessary tests altogether in this case, rather 148## than just ignoring the results. Faster /and/ more correct, win win. 149GLIBCXX_ENABLE_HOSTED 150 151# Enable descriptive messages to standard output on termination. 152GLIBCXX_ENABLE_VERBOSE 153 154# Enable compiler support that doesn't require linking. 155GLIBCXX_ENABLE_PCH($is_hosted) 156GLIBCXX_ENABLE_THREADS 157GLIBCXX_ENABLE_ATOMIC_BUILTINS 158GLIBCXX_ENABLE_DECIMAL_FLOAT 159GLIBCXX_ENABLE_INT128_FLOAT128 160if test "$enable_float128" = yes; then 161 port_specific_symbol_files="$port_specific_symbol_files \$(top_srcdir)/config/abi/pre/float128.ver" 162fi 163 164# Checks for compiler support that doesn't require linking. 165GLIBCXX_CHECK_COMPILER_FEATURES 166 167# Enable all the variable C++ runtime options that don't require linking. 168GLIBCXX_ENABLE_CSTDIO 169GLIBCXX_ENABLE_CLOCALE 170GLIBCXX_ENABLE_ALLOCATOR 171GLIBCXX_ENABLE_CHEADERS($c_model) dnl c_model from configure.host 172GLIBCXX_ENABLE_LONG_LONG([yes]) 173GLIBCXX_ENABLE_WCHAR_T([yes]) 174GLIBCXX_ENABLE_C99([yes]) 175GLIBCXX_ENABLE_CONCEPT_CHECKS([no]) 176GLIBCXX_ENABLE_DEBUG_FLAGS(["-gdwarf-4 -g3 -O0"]) 177GLIBCXX_ENABLE_DEBUG([no]) 178GLIBCXX_ENABLE_PARALLEL([yes]) 179GLIBCXX_ENABLE_CXX_FLAGS 180GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no]) 181GLIBCXX_ENABLE_EXTERN_TEMPLATE([yes]) 182GLIBCXX_ENABLE_PYTHON 183GLIBCXX_ENABLE_WERROR([yes]) 184GLIBCXX_ENABLE_VTABLE_VERIFY([no]) 185 186# Checks for operating systems support that doesn't require linking. 187GLIBCXX_CHECK_STDIO_PROTO 188GLIBCXX_CHECK_MATH11_PROTO 189GLIBCXX_CHECK_SYSTEM_ERROR 190GLIBCXX_CHECK_UCHAR_H 191 192# For the streamoff typedef. 193GLIBCXX_CHECK_INT64_T 194 195# For LFS support. 196GLIBCXX_CHECK_LFS 197 198# For showmanyc_helper(). 199AC_CHECK_HEADERS(sys/ioctl.h sys/filio.h) 200GLIBCXX_CHECK_POLL 201GLIBCXX_CHECK_S_ISREG_OR_S_IFREG 202 203# For xsputn_2(). 204AC_CHECK_HEADERS(sys/uio.h) 205GLIBCXX_CHECK_WRITEV 206 207# Check for fenv.h and complex.h before GLIBCXX_CHECK_C99_TR1 208# so that the check is done with the C compiler (not C++). 209# Checking with C++ can break a canadian cross build if either 210# file does not exist in C but does in C++. 211AC_CHECK_HEADERS(fenv.h complex.h) 212 213# For C99 support to TR1. 214GLIBCXX_CHECK_C99_TR1 215 216# For the EOF, SEEK_CUR, and SEEK_END integer constants. 217GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS 218 219# For gettimeofday support. 220GLIBCXX_CHECK_GETTIMEOFDAY 221 222# For clock_gettime, nanosleep and sched_yield support. 223GLIBCXX_ENABLE_LIBSTDCXX_TIME 224 225# Check for tmpnam which is obsolescent in POSIX.1-2008 226GLIBCXX_CHECK_TMPNAM 227 228AC_LC_MESSAGES 229 230# For hardware_concurrency 231AC_CHECK_HEADERS(sys/sysinfo.h) 232GLIBCXX_CHECK_GET_NPROCS 233AC_CHECK_HEADERS(unistd.h) 234GLIBCXX_CHECK_SC_NPROCESSORS_ONLN 235GLIBCXX_CHECK_SC_NPROC_ONLN 236GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP 237GLIBCXX_CHECK_SYSCTL_HW_NCPU 238GLIBCXX_CHECK_SDT_H 239 240# Check for available headers. 241AC_CHECK_HEADERS([endian.h execinfo.h float.h fp.h ieeefp.h inttypes.h \ 242locale.h machine/endian.h machine/param.h nan.h stdint.h stdlib.h string.h \ 243strings.h sys/ipc.h sys/isa_defs.h sys/machine.h sys/param.h \ 244sys/resource.h sys/sem.h sys/stat.h sys/time.h sys/types.h unistd.h \ 245wchar.h wctype.h linux/types.h]) 246 247AC_CHECK_HEADERS([linux/random.h], [], [], 248[[#ifdef HAVE_LINUX_TYPES_H 249# include <linux/types.h> 250#endif 251]]) 252 253# Only do link tests if native. Else, hardcode. 254if $GLIBCXX_IS_NATIVE; then 255 256 # We can do more elaborate tests that assume a working linker. 257 CANADIAN=no 258 259 GLIBCXX_CHECK_LINKER_FEATURES 260 GLIBCXX_CHECK_MATH_SUPPORT 261 GLIBCXX_CHECK_STDLIB_SUPPORT 262 263 # For /dev/random and /dev/urandom for TR1. 264 GLIBCXX_CHECK_RANDOM_TR1 265 266 # For TLS support. 267 GCC_CHECK_TLS 268 269 AC_CHECK_FUNCS(__cxa_thread_atexit_impl __cxa_thread_atexit) 270 AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc) 271 272 # For iconv support. 273 AM_ICONV 274 275else 276 277 # This lets us hard-code the functionality we know we'll have in the cross 278 # target environment. "Let" is a sugar-coated word placed on an especially 279 # dull and tedious hack, actually. 280 # 281 # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros 282 # that involve linking, can't be used: 283 # "cannot open sim-crt0.o" 284 # "cannot open crt0.o" 285 # etc. All this is because there currently exists no unified, consistent 286 # way for top level CC information to be passed down to target directories: 287 # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc. 288 # When all of that is done, all of this hokey, excessive AC_DEFINE junk for 289 # crosses can be removed. 290 291 # If Canadian cross, then don't pick up tools from the build directory. 292 # Used only in GLIBCXX_EXPORT_INCLUDES. 293 if test -n "$with_cross_host" && 294 test x"$build_alias" != x"$with_cross_host" && 295 test x"$build" != x"$target"; 296 then 297 CANADIAN=yes 298 else 299 CANADIAN=no 300 fi 301 302 # Construct crosses by hand, eliminating bits that need ld... 303 # GLIBCXX_CHECK_MATH_SUPPORT 304 305 # First, test for "known" system libraries. We may be using newlib even 306 # on a hosted environment. 307 if test "x${with_newlib}" = "xyes"; then 308 os_include_dir="os/newlib" 309 AC_DEFINE(HAVE_HYPOT) 310 311 # GLIBCXX_CHECK_STDLIB_SUPPORT 312 AC_DEFINE(HAVE_STRTOF) 313 314 AC_DEFINE(HAVE_ACOSF) 315 AC_DEFINE(HAVE_ASINF) 316 AC_DEFINE(HAVE_ATAN2F) 317 AC_DEFINE(HAVE_ATANF) 318 AC_DEFINE(HAVE_CEILF) 319 AC_DEFINE(HAVE_COSF) 320 AC_DEFINE(HAVE_COSHF) 321 AC_DEFINE(HAVE_EXPF) 322 AC_DEFINE(HAVE_FABSF) 323 AC_DEFINE(HAVE_FLOORF) 324 AC_DEFINE(HAVE_FMODF) 325 AC_DEFINE(HAVE_FREXPF) 326 AC_DEFINE(HAVE_LDEXPF) 327 AC_DEFINE(HAVE_LOG10F) 328 AC_DEFINE(HAVE_LOGF) 329 AC_DEFINE(HAVE_MODFF) 330 AC_DEFINE(HAVE_POWF) 331 AC_DEFINE(HAVE_SINF) 332 AC_DEFINE(HAVE_SINHF) 333 AC_DEFINE(HAVE_SQRTF) 334 AC_DEFINE(HAVE_TANF) 335 AC_DEFINE(HAVE_TANHF) 336 337 AC_DEFINE(HAVE_ICONV) 338 AC_DEFINE(HAVE_MEMALIGN) 339 else 340 GLIBCXX_CROSSCONFIG 341 fi 342 343 # At some point, we should differentiate between architectures 344 # like x86, which have long double versions, and alpha/powerpc/etc., 345 # which don't. For the time being, punt. 346 if test x"long_double_math_on_this_cpu" = x"yes"; then 347 AC_DEFINE(HAVE_ACOSL) 348 AC_DEFINE(HAVE_ASINL) 349 AC_DEFINE(HAVE_ATAN2L) 350 AC_DEFINE(HAVE_ATANL) 351 AC_DEFINE(HAVE_CEILL) 352 AC_DEFINE(HAVE_COSL) 353 AC_DEFINE(HAVE_COSHL) 354 AC_DEFINE(HAVE_EXPL) 355 AC_DEFINE(HAVE_FABSL) 356 AC_DEFINE(HAVE_FLOORL) 357 AC_DEFINE(HAVE_FMODL) 358 AC_DEFINE(HAVE_FREXPL) 359 AC_DEFINE(HAVE_LDEXPL) 360 AC_DEFINE(HAVE_LOG10L) 361 AC_DEFINE(HAVE_LOGL) 362 AC_DEFINE(HAVE_MODFL) 363 AC_DEFINE(HAVE_POWL) 364 AC_DEFINE(HAVE_SINCOSL) 365 AC_DEFINE(HAVE_SINL) 366 AC_DEFINE(HAVE_SINHL) 367 AC_DEFINE(HAVE_SQRTL) 368 AC_DEFINE(HAVE_TANL) 369 AC_DEFINE(HAVE_TANHL) 370 fi 371fi 372 373# Check for _Unwind_GetIPInfo. 374GCC_CHECK_UNWIND_GETIPINFO 375 376GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])]) 377 378GCC_HEADER_STDINT(include/gstdint.h) 379 380GLIBCXX_ENABLE_SYMVERS([yes]) 381AC_SUBST(libtool_VERSION) 382 383GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY([yes]) 384 385GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI([yes]) 386GLIBCXX_DEFAULT_ABI 387 388ac_ldbl_compat=no 389LONG_DOUBLE_COMPAT_FLAGS="-mlong-double-64" 390case "$target" in 391 powerpc*-*-linux* | \ 392 sparc*-*-linux* | \ 393 s390*-*-linux* | \ 394 alpha*-*-linux*) 395 AC_TRY_COMPILE(, [ 396#if !defined __LONG_DOUBLE_128__ || (defined(__sparc__) && defined(__arch64__)) 397#error no need for long double compatibility 398#endif 399 ], [ac_ldbl_compat=yes], [ac_ldbl_compat=no]) 400 if test "$ac_ldbl_compat" = yes; then 401 AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1, 402 [Define if compatibility should be provided for -mlong-double-64.]) 403 port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver" 404 case "$target" in 405 powerpc*-*-linux*) 406 LONG_DOUBLE_COMPAT_FLAGS="$LONG_DOUBLE_COMPAT_FLAGS -mno-gnu-attribute" ;; 407 esac 408 fi 409esac 410AC_SUBST(LONG_DOUBLE_COMPAT_FLAGS) 411GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes) 412 413# Check if assembler supports disabling hardware capability support. 414GCC_CHECK_ASSEMBLER_HWCAP 415 416# Check if assembler supports rdrand opcode. 417GLIBCXX_CHECK_X86_RDRAND 418 419# This depends on GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE. 420GLIBCXX_CONFIGURE_TESTSUITE 421 422# For gthread support. Depends on GLIBCXX_ENABLE_SYMVERS. 423GLIBCXX_CHECK_GTHREADS 424 425# For Filesystem TS. 426AC_CHECK_HEADERS([fcntl.h dirent.h sys/statvfs.h utime.h]) 427GLIBCXX_ENABLE_FILESYSTEM_TS 428GLIBCXX_CHECK_FILESYSTEM_DEPS 429 430# For Transactional Memory TS 431GLIBCXX_CHECK_SIZE_T_MANGLING 432 433# Check which release added std::exception_ptr for the target 434GLIBCXX_CHECK_EXCEPTION_PTR_SYMVER 435 436# Define documentation rules conditionally. 437 438# See if makeinfo has been installed and is modern enough 439# that we can use it. 440ACX_CHECK_PROG_VER([MAKEINFO], [makeinfo], [--version], 441 [GNU texinfo.* \([0-9][0-9.]*\)], 442 [4.[4-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) 443AM_CONDITIONAL(BUILD_INFO, test $gcc_cv_prog_makeinfo_modern = "yes") 444 445# Check for doxygen 446AC_CHECK_PROG([DOXYGEN], doxygen, yes, no) 447AC_CHECK_PROG([DOT], dot, yes, no) 448 449# Check for docbook 450AC_CHECK_PROG([XMLCATALOG], xmlcatalog, yes, no) 451AC_CHECK_PROG([XSLTPROC], xsltproc, yes, no) 452AC_CHECK_PROG([XMLLINT], xmllint, yes, no) 453GLIBCXX_CONFIGURE_DOCBOOK 454 455# Check for xml/html dependencies. 456AM_CONDITIONAL(BUILD_XML, 457 test $ac_cv_prog_DOXYGEN = "yes" && 458 test $ac_cv_prog_DOT = "yes" && 459 test $ac_cv_prog_XSLTPROC = "yes" && 460 test $ac_cv_prog_XMLLINT = "yes" && 461 test $glibcxx_stylesheets = "yes") 462 463AM_CONDITIONAL(BUILD_HTML, 464 test $ac_cv_prog_DOXYGEN = "yes" && 465 test $ac_cv_prog_DOT = "yes" && 466 test $ac_cv_prog_XSLTPROC = "yes" && 467 test $ac_cv_prog_XMLLINT = "yes" && 468 test $glibcxx_stylesheets = "yes") 469 470# Check for man dependencies. 471AM_CONDITIONAL(BUILD_MAN, 472 test $ac_cv_prog_DOXYGEN = "yes" && 473 test $ac_cv_prog_DOT = "yes") 474 475# Check for pdf dependencies. 476AC_CHECK_PROG([DBLATEX], dblatex, yes, no) 477AC_CHECK_PROG([PDFLATEX], pdflatex, yes, no) 478AM_CONDITIONAL(BUILD_PDF, 479 test $ac_cv_prog_DBLATEX = "yes" && 480 test $ac_cv_prog_PDFLATEX = "yes") 481 482case "$build" in 483 *-*-darwin* ) glibcxx_include_dir_notparallel=yes ;; 484 * ) glibcxx_include_dir_notparallel=no ;; 485esac 486AM_CONDITIONAL(INCLUDE_DIR_NOTPARALLEL, 487 test $glibcxx_include_dir_notparallel = "yes") 488 489# Propagate the target-specific source directories through the build chain. 490ATOMICITY_SRCDIR=config/${atomicity_dir} 491ATOMIC_WORD_SRCDIR=config/${atomic_word_dir} 492ATOMIC_FLAGS=${atomic_flags} 493CPU_DEFINES_SRCDIR=config/${cpu_defines_dir} 494OS_INC_SRCDIR=config/${os_include_dir} 495ERROR_CONSTANTS_SRCDIR=config/${error_constants_dir} 496ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir} 497CPU_OPT_EXT_RANDOM=config/${cpu_opt_ext_random} 498CPU_OPT_BITS_RANDOM=config/${cpu_opt_bits_random} 499AC_SUBST(ATOMICITY_SRCDIR) 500AC_SUBST(ATOMIC_WORD_SRCDIR) 501AC_SUBST(ATOMIC_FLAGS) 502AC_SUBST(CPU_DEFINES_SRCDIR) 503AC_SUBST(ABI_TWEAKS_SRCDIR) 504AC_SUBST(OS_INC_SRCDIR) 505AC_SUBST(ERROR_CONSTANTS_SRCDIR) 506AC_SUBST(CPU_OPT_EXT_RANDOM) 507AC_SUBST(CPU_OPT_BITS_RANDOM) 508 509 510# Add CET specific flags if Intel CET is enabled. 511GCC_CET_FLAGS(CET_FLAGS) 512EXTRA_CXX_FLAGS="$EXTRA_CXX_FLAGS $CET_FLAGS" 513EXTRA_CFLAGS="$EXTRA_CFLAGS $CET_FLAGS" 514AC_SUBST(EXTRA_CFLAGS) 515AC_SUBST(EXTRA_CXX_FLAGS) 516 517# Determine cross-compile flags and AM_CONDITIONALs. 518#AC_SUBST(GLIBCXX_IS_NATIVE) 519#AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes) 520GLIBCXX_EVALUATE_CONDITIONALS 521 522AC_CACHE_SAVE 523 524if test ${multilib} = yes; then 525 multilib_arg="--enable-multilib" 526else 527 multilib_arg= 528fi 529 530# Export all the install information. 531GLIBCXX_EXPORT_INSTALL_INFO 532 533# Export all the include and flag information to Makefiles. 534GLIBCXX_EXPORT_INCLUDES 535GLIBCXX_EXPORT_FLAGS 536 537# Determine what GCC version number to use in filesystem paths. 538GCC_BASE_VER 539 540dnl In autoconf 2.5x, AC_OUTPUT is replaced by four AC_CONFIG_* macros, 541dnl which can all be called multiple times as needed, plus one (different) 542dnl AC_OUTPUT macro. This one lists the files to be created: 543AC_CONFIG_FILES(Makefile) 544AC_CONFIG_FILES([scripts/testsuite_flags],[chmod +x scripts/testsuite_flags]) 545AC_CONFIG_FILES([scripts/extract_symvers],[chmod +x scripts/extract_symvers]) 546AC_CONFIG_FILES([doc/xsl/customization.xsl]) 547 548# Multilibs need MULTISUBDIR defined correctly in certain makefiles so 549# that multilib installs will end up installed in the correct place. 550# The testsuite needs it for multilib-aware ABI baseline files. 551# To work around this not being passed down from config-ml.in -> 552# srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually 553# append it here. Only modify Makefiles that have just been created. 554# 555# Also, get rid of this simulated-VPATH thing that automake does. 556AC_CONFIG_FILES(AC_FOREACH([DIR], glibcxx_SUBDIRS, [DIR/Makefile ]), 557 [cat > vpsed$$ << \_EOF 558s!`test -f '$<' || echo '$(srcdir)/'`!! 559_EOF 560 sed -f vpsed$$ $ac_file > tmp$$ 561 mv tmp$$ $ac_file 562 rm vpsed$$ 563 echo 'MULTISUBDIR =' >> $ac_file 564 ml_norecursion=yes 565 . ${multi_basedir}/config-ml.in 566 AS_UNSET([ml_norecursion]) 567]) 568 569AC_CONFIG_COMMANDS([generate-headers], 570 [(cd include && ${MAKE-make} pch_build= )]) 571 572dnl And this actually makes things happen: 573AC_OUTPUT 574