acinclude.m4 revision 110614
1dnl 2dnl Initialize configure bits. 3dnl 4dnl GLIBCPP_TOPREL_CONFIGURE 5AC_DEFUN(GLIBCPP_TOPREL_CONFIGURE, [ 6 dnl Default to --enable-multilib (this is also passed by default 7 dnl from the ubercommon-top-level configure) 8 AC_ARG_ENABLE(multilib, 9 [ --enable-multilib build hella library versions (default)], 10 [case "${enableval}" in 11 yes) multilib=yes ;; 12 no) multilib=no ;; 13 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;; 14 esac], [multilib=yes])dnl 15 16 # When building with srcdir == objdir, links to the source files will 17 # be created in directories within the target_subdir. We have to 18 # adjust toplevel_srcdir accordingly, so that configure finds 19 # install-sh and other auxiliary files that live in the top-level 20 # source directory. 21 if test "${srcdir}" = "."; then 22 if test -z "${with_target_subdir}"; then 23 toprel=".." 24 else 25 if test "${with_target_subdir}" != "."; then 26 toprel="${with_multisrctop}../.." 27 else 28 toprel="${with_multisrctop}.." 29 fi 30 fi 31 else 32 toprel=".." 33 fi 34 AC_CONFIG_AUX_DIR(${srcdir}/$toprel) 35 toplevel_srcdir=\${top_srcdir}/$toprel 36 AC_SUBST(toplevel_srcdir) 37]) 38 39dnl 40dnl Initialize configure bits. 41dnl 42dnl GLIBCPP_CONFIGURE 43AC_DEFUN(GLIBCPP_CONFIGURE, [ 44 45#possibly test for the presence of the compiler sources here? 46 47 # Export build and source directories. 48 # These need to be absolute paths, yet at the same time need to 49 # canonicalize only relative paths, because then amd will not unmount 50 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. 51 glibcpp_builddir=`${PWDCMD-pwd}` 52 case $srcdir in 53 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;; 54 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; 55 esac 56 AC_SUBST(glibcpp_builddir) 57 AC_SUBST(glibcpp_srcdir) 58 59 dnl This is here just to satisfy automake. 60 ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)]) 61 62 AC_PROG_AWK 63 # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also 64 # be 'cp -p' if linking isn't available. Uncomment the next line to 65 # force a particular method. 66 #ac_cv_prog_LN_S='cp -p' 67 AC_PROG_LN_S 68 69 # We use these options to decide which functions to include. 70 AC_ARG_WITH(target-subdir, 71 [ --with-target-subdir=SUBDIR 72 configuring in a subdirectory]) 73 AC_ARG_WITH(cross-host, 74 [ --with-cross-host=HOST configuring with a cross compiler]) 75 76 glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3 77 AC_SUBST(glibcpp_basedir) 78 79 # Never versions of autoconf add an underscore to these functions. 80 # Prevent future problems ... 81 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))]) 82 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))]) 83 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))]) 84 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))]) 85 86 # AC_PROG_CC 87 # FIXME: We temporarily define our own version of AC_PROG_CC. This is 88 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We 89 # are probably using a cross compiler, which will not be able to fully 90 # link an executable. This is addressed in later versions of autoconf. 91 92 AC_DEFUN(LIB_AC_PROG_CC, 93 [AC_BEFORE([$0], [AC_PROG_CPP])dnl 94 dnl Fool anybody using AC_PROG_CC. 95 AC_PROVIDE([AC_PROG_CC]) 96 AC_CHECK_PROG(CC, gcc, gcc) 97 if test -z "$CC"; then 98 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) 99 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH]) 100 fi 101 102 AC_PROG_CC_GNU 103 104 if test $ac_cv_prog_gcc = yes; then 105 GCC=yes 106 dnl Check whether -g works, even if CFLAGS is set, in case the package 107 dnl plays around with CFLAGS (such as to build both debugging and 108 dnl normal versions of a library), tasteless as that idea is. 109 ac_test_CFLAGS="${CFLAGS+set}" 110 ac_save_CFLAGS="$CFLAGS" 111 CFLAGS= 112 AC_PROG_CC_G 113 if test "$ac_test_CFLAGS" = set; then 114 CFLAGS="$ac_save_CFLAGS" 115 elif test $ac_cv_prog_cc_g = yes; then 116 CFLAGS="-g -O2" 117 else 118 CFLAGS="-O2" 119 fi 120 else 121 GCC= 122 test "${CFLAGS+set}" = set || CFLAGS="-g" 123 fi 124 ]) 125 126 LIB_AC_PROG_CC 127 128 # Likewise for AC_PROG_CXX. We can't just call it directly because g++ 129 # will try to link in libstdc++. 130 AC_DEFUN(LIB_AC_PROG_CXX, 131 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl 132 dnl Fool anybody using AC_PROG_CXX. 133 AC_PROVIDE([AC_PROG_CXX]) 134 # Use glibcpp_CXX so that we do not cause CXX to be cached with the 135 # flags that come in CXX while configuring libstdc++. They're different 136 # from those used for all other target libraries. If CXX is set in 137 # the environment, respect that here. 138 glibcpp_CXX=$CXX 139 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc) 140 AC_SUBST(glibcpp_CXX) 141 CXX=$glibcpp_CXX 142 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH]) 143 144 AC_PROG_CXX_GNU 145 146 if test $ac_cv_prog_gxx = yes; then 147 GXX=yes 148 dnl Check whether -g works, even if CXXFLAGS is set, in case the package 149 dnl plays around with CXXFLAGS (such as to build both debugging and 150 dnl normal versions of a library), tasteless as that idea is. 151 ac_test_CXXFLAGS="${CXXFLAGS+set}" 152 ac_save_CXXFLAGS="$CXXFLAGS" 153 CXXFLAGS= 154 AC_PROG_CXX_G 155 if test "$ac_test_CXXFLAGS" = set; then 156 CXXFLAGS="$ac_save_CXXFLAGS" 157 elif test $ac_cv_prog_cxx_g = yes; then 158 CXXFLAGS="-g -O2" 159 else 160 CXXFLAGS="-O2" 161 fi 162 else 163 GXX= 164 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g" 165 fi 166 ]) 167 168 LIB_AC_PROG_CXX 169 170 # For directory versioning (e.g., headers) and other variables. 171 AC_MSG_CHECKING([for GCC version number]) 172 gcc_version=`$glibcpp_CXX -dumpversion` 173 AC_MSG_RESULT($gcc_version) 174 175 # For some reason, gettext needs this. 176 AC_ISC_POSIX 177 178 AC_CHECK_TOOL(AS, as) 179 AC_CHECK_TOOL(AR, ar) 180 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) 181 AC_PROG_INSTALL 182 183 AM_MAINTAINER_MODE 184 185 # We need AC_EXEEXT to keep automake happy in cygnus mode. However, 186 # at least currently, we never actually build a program, so we never 187 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally 188 # fails, because we are probably configuring with a cross compiler 189 # which can't create executables. So we include AC_EXEEXT to keep 190 # automake happy, but we don't execute it, since we don't care about 191 # the result. 192 if false; then 193 # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands 194 # to nothing, so nothing would remain between `then' and `fi' if it 195 # were not for the `:' below. 196 : 197 AC_EXEEXT 198 fi 199 200 case [$]{glibcpp_basedir} in 201 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;; 202 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;; 203 esac 204 205 # Find platform-specific directories containing configuration info. In 206 # addition to possibly modifying the same flags, it also sets up symlinks. 207 GLIBCPP_CHECK_TARGET 208]) 209 210 211dnl 212dnl Check to see if g++ can compile this library, and if so, if any version- 213dnl specific precautions need to be taken. 214dnl 215dnl GLIBCPP_CHECK_COMPILER_VERSION 216AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [ 217if test ! -f stamp-sanity-compiler; then 218 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3]) 219 AC_LANG_SAVE 220 AC_LANG_CPLUSPLUS 221 AC_TRY_COMPILE(, [ 222 #if __GNUC__ < 3 223 not_ok 224 #endif 225 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above])) 226 AC_LANG_RESTORE 227 AC_MSG_RESULT($gpp_satisfactory) 228 touch stamp-sanity-compiler 229fi 230]) 231 232 233dnl 234dnl Tests for newer compiler features, or features that are present in newer 235dnl compiler versions but not older compiler versions still in use, should 236dnl be placed here. 237dnl 238dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the 239dnl new inlining code or the new system_header pragma will die on -Werror. 240dnl Leave it out by default and use maint-mode to use it. 241dnl 242dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if 243dnl compiler supports it and the user has not requested debug mode. 244dnl 245dnl GLIBCPP_CHECK_COMPILER_FEATURES 246AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [ 247 # All these tests are for C++; save the language and the compiler flags. 248 # The CXXFLAGS thing is suspicious, but based on similar bits previously 249 # found in GLIBCPP_CONFIGURE. 250 AC_LANG_SAVE 251 AC_LANG_CPLUSPLUS 252 ac_test_CXXFLAGS="${CXXFLAGS+set}" 253 ac_save_CXXFLAGS="$CXXFLAGS" 254 255 # Check for maintainer-mode bits. 256 if test x"$USE_MAINTAINER_MODE" = xno; then 257 WERROR='' 258 else 259 WERROR='-Werror' 260 fi 261 262 # Check for -ffunction-sections -fdata-sections 263 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) 264 CXXFLAGS='-Werror -ffunction-sections -fdata-sections' 265 AC_TRY_COMPILE(, [int foo; 266 ], [ac_fdsections=yes], [ac_fdsections=no]) 267 if test "$ac_test_CXXFLAGS" = set; then 268 CXXFLAGS="$ac_save_CXXFLAGS" 269 else 270 # this is the suspicious part 271 CXXFLAGS='' 272 fi 273 if test x"$ac_fdsections" = x"yes" && 274 test x"$enable_debug" = x"no"; then 275 SECTION_FLAGS='-ffunction-sections -fdata-sections' 276 fi 277 AC_MSG_RESULT($ac_fdsections) 278 279 AC_LANG_RESTORE 280 AC_SUBST(WERROR) 281 AC_SUBST(SECTION_FLAGS) 282]) 283 284 285dnl 286dnl If GNU ld is in use, check to see if tricky linker opts can be used. If 287dnl the native linker is in use, all variables will be defined to something 288dnl safe (like an empty string). 289dnl 290dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible. 291dnl Define OPT_LDFLAGS='-Wl,-O1' if possible. 292dnl Define LD, with_gnu_ld, and (possibly) glibcpp_gnu_ld_version as 293dnl side-effects of testing. 294dnl 295dnl GLIBCPP_CHECK_LINKER_FEATURES 296AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [ 297 # If we're not using GNU ld, then there's no point in even trying these 298 # tests. Check for that first. We should have already tested for gld 299 # by now (in libtool), but require it now just to be safe... 300 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' 301 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' 302 AC_REQUIRE([AC_PROG_LD]) 303 304 # The name set by libtool depends on the version of libtool. Shame on us 305 # for depending on an impl detail, but c'est la vie. Older versions used 306 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on 307 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually 308 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't 309 # set (hence we're using an older libtool), then set it. 310 if test x${with_gnu_ld+set} != xset; then 311 if test x${ac_cv_prog_gnu_ld+set} != xset; then 312 # We got through "ac_require(ac_prog_ld)" and still not set? Huh? 313 with_gnu_ld=no 314 else 315 with_gnu_ld=$ac_cv_prog_gnu_ld 316 fi 317 fi 318 319 # Start by getting the version number. I think the libtool test already 320 # does some of this, but throws away the result. 321 changequote(,) 322 ldver=`$LD --version 2>/dev/null | head -1 | \ 323 sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'` 324 changequote([,]) 325 glibcpp_gnu_ld_version=`echo $ldver | \ 326 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` 327 328 # Set --gc-sections. 329 if test "$with_gnu_ld" = "notbroken"; then 330 # GNU ld it is! Joy and bunny rabbits! 331 332 # All these tests are for C++; save the language and the compiler flags. 333 # Need to do this so that g++ won't try to link in libstdc++ 334 ac_test_CFLAGS="${CFLAGS+set}" 335 ac_save_CFLAGS="$CFLAGS" 336 CFLAGS='-x c++ -Wl,--gc-sections' 337 338 # Check for -Wl,--gc-sections 339 # XXX This test is broken at the moment, as symbols required for 340 # linking are now in libsupc++ (not built yet.....). In addition, 341 # this test has cored on solaris in the past. In addition, 342 # --gc-sections doesn't really work at the moment (keeps on discarding 343 # used sections, first .eh_frame and now some of the glibc sections for 344 # iconv). Bzzzzt. Thanks for playing, maybe next time. 345 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) 346 AC_TRY_RUN([ 347 int main(void) 348 { 349 try { throw 1; } 350 catch (...) { }; 351 return 0; 352 } 353 ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes]) 354 if test "$ac_test_CFLAGS" = set; then 355 CFLAGS="$ac_save_CFLAGS" 356 else 357 # this is the suspicious part 358 CFLAGS='' 359 fi 360 if test "$ac_sectionLDflags" = "yes"; then 361 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" 362 fi 363 AC_MSG_RESULT($ac_sectionLDflags) 364 fi 365 366 # Set linker optimization flags. 367 if test x"$with_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then 368 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" 369 fi 370 371 AC_SUBST(SECTION_LDFLAGS) 372 AC_SUBST(OPT_LDFLAGS) 373]) 374 375 376dnl 377dnl Check to see if the (math function) argument passed is 378dnl declared when using the c++ compiler 379dnl ASSUMES argument is a math function with ONE parameter 380dnl 381dnl GLIBCPP_CHECK_MATH_DECL_1 382AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [ 383 AC_MSG_CHECKING([for $1 declaration]) 384 if test x${glibcpp_cv_func_$1_use+set} != xset; then 385 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ 386 AC_LANG_SAVE 387 AC_LANG_CPLUSPLUS 388 AC_TRY_COMPILE([#include <math.h> 389 #ifdef HAVE_IEEEFP_H 390 #include <ieeefp.h> 391 #endif 392 ], 393 [ $1(0);], 394 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) 395 AC_LANG_RESTORE 396 ]) 397 fi 398 AC_MSG_RESULT($glibcpp_cv_func_$1_use) 399]) 400 401dnl 402dnl Check to see if the (math function) argument passed is 403dnl 1) declared when using the c++ compiler 404dnl 2) has "C" linkage 405dnl 3) if not, see if 1) and 2) for argument prepended with '_' 406dnl 407dnl Define HAVE_CARGF etc if "cargf" is declared and links 408dnl 409dnl argument 1 is name of function to check 410dnl 411dnl ASSUMES argument is a math function with ONE parameter 412dnl 413dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1 414AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [ 415 GLIBCPP_CHECK_MATH_DECL_1($1) 416 if test x$glibcpp_cv_func_$1_use = x"yes"; then 417 AC_CHECK_FUNCS($1) 418 else 419 GLIBCPP_CHECK_MATH_DECL_1(_$1) 420 if test x$glibcpp_cv_func__$1_use = x"yes"; then 421 AC_CHECK_FUNCS(_$1) 422 fi 423 fi 424]) 425 426 427dnl 428dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of 429dnl of functions at once. It's an all-or-nothing check -- either 430dnl HAVE_XYZ is defined for each of the functions, or for none of them. 431dnl Doing it this way saves significant configure time. 432AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [ 433 AC_MSG_CHECKING([for $1 functions]) 434 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [ 435 AC_LANG_SAVE 436 AC_LANG_CPLUSPLUS 437 AC_TRY_COMPILE([#include <math.h>], 438 [ `for x in $3; do echo "$x (0);"; done` ], 439 [glibcpp_cv_func_$2_use=yes], 440 [glibcpp_cv_func_$2_use=no]) 441 AC_LANG_RESTORE]) 442 AC_MSG_RESULT($glibcpp_cv_func_$2_use) 443 if test x$glibcpp_cv_func_$2_use = x"yes"; then 444 AC_CHECK_FUNCS($3) 445 fi 446]) 447 448dnl 449dnl Check to see if the (math function) argument passed is 450dnl declared when using the c++ compiler 451dnl ASSUMES argument is a math function with TWO parameters 452dnl 453dnl GLIBCPP_CHECK_MATH_DECL_2 454AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [ 455 AC_MSG_CHECKING([for $1 declaration]) 456 if test x${glibcpp_cv_func_$1_use+set} != xset; then 457 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ 458 AC_LANG_SAVE 459 AC_LANG_CPLUSPLUS 460 AC_TRY_COMPILE([#include <math.h>], 461 [ $1(0, 0);], 462 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) 463 AC_LANG_RESTORE 464 ]) 465 fi 466 AC_MSG_RESULT($glibcpp_cv_func_$1_use) 467]) 468 469dnl 470dnl Check to see if the (math function) argument passed is 471dnl 1) declared when using the c++ compiler 472dnl 2) has "C" linkage 473dnl 474dnl Define HAVE_CARGF etc if "cargf" is declared and links 475dnl 476dnl argument 1 is name of function to check 477dnl 478dnl ASSUMES argument is a math function with TWO parameters 479dnl 480dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2 481AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [ 482 GLIBCPP_CHECK_MATH_DECL_2($1) 483 if test x$glibcpp_cv_func_$1_use = x"yes"; then 484 AC_CHECK_FUNCS($1) 485 else 486 GLIBCPP_CHECK_MATH_DECL_2(_$1) 487 if test x$glibcpp_cv_func__$1_use = x"yes"; then 488 AC_CHECK_FUNCS(_$1) 489 fi 490 fi 491]) 492 493 494dnl 495dnl Check to see if the (math function) argument passed is 496dnl declared when using the c++ compiler 497dnl ASSUMES argument is a math function with THREE parameters 498dnl 499dnl GLIBCPP_CHECK_MATH_DECL_3 500AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [ 501 AC_MSG_CHECKING([for $1 declaration]) 502 if test x${glibcpp_cv_func_$1_use+set} != xset; then 503 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ 504 AC_LANG_SAVE 505 AC_LANG_CPLUSPLUS 506 AC_TRY_COMPILE([#include <math.h>], 507 [ $1(0, 0, 0);], 508 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) 509 AC_LANG_RESTORE 510 ]) 511 fi 512 AC_MSG_RESULT($glibcpp_cv_func_$1_use) 513]) 514 515dnl 516dnl Check to see if the (math function) argument passed is 517dnl 1) declared when using the c++ compiler 518dnl 2) has "C" linkage 519dnl 520dnl Define HAVE_CARGF etc if "cargf" is declared and links 521dnl 522dnl argument 1 is name of function to check 523dnl 524dnl ASSUMES argument is a math function with THREE parameters 525dnl 526dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3 527AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [ 528 GLIBCPP_CHECK_MATH_DECL_3($1) 529 if test x$glibcpp_cv_func_$1_use = x"yes"; then 530 AC_CHECK_FUNCS($1) 531 else 532 GLIBCPP_CHECK_MATH_DECL_3(_$1) 533 if test x$glibcpp_cv_func__$1_use = x"yes"; then 534 AC_CHECK_FUNCS(_$1) 535 fi 536 fi 537]) 538 539 540dnl 541dnl Check to see if the (stdlib function) argument passed is 542dnl 1) declared when using the c++ compiler 543dnl 2) has "C" linkage 544dnl 545dnl argument 1 is name of function to check 546dnl 547dnl ASSUMES argument is a math function with TWO parameters 548dnl 549dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2 550AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [ 551 AC_MSG_CHECKING([for $1 declaration]) 552 if test x${glibcpp_cv_func_$1_use+set} != xset; then 553 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ 554 AC_LANG_SAVE 555 AC_LANG_CPLUSPLUS 556 AC_TRY_COMPILE([#include <stdlib.h>], 557 [ $1(0, 0);], 558 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) 559 AC_LANG_RESTORE 560 ]) 561 fi 562 AC_MSG_RESULT($glibcpp_cv_func_$1_use) 563 if test x$glibcpp_cv_func_$1_use = x"yes"; then 564 AC_CHECK_FUNCS($1) 565 fi 566]) 567 568 569dnl 570dnl Check to see if the (stdlib function) argument passed is 571dnl 1) declared when using the c++ compiler 572dnl 2) has "C" linkage 573dnl 574dnl argument 1 is name of function to check 575dnl 576dnl ASSUMES argument is a function with THREE parameters 577dnl 578dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3 579AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3, [ 580 AC_MSG_CHECKING([for $1 declaration]) 581 if test x${glibcpp_cv_func_$1_use+set} != xset; then 582 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ 583 AC_LANG_SAVE 584 AC_LANG_CPLUSPLUS 585 AC_TRY_COMPILE([#include <stdlib.h>], 586 [ $1(0, 0, 0);], 587 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) 588 AC_LANG_RESTORE 589 ]) 590 fi 591 AC_MSG_RESULT($glibcpp_cv_func_$1_use) 592 if test x$glibcpp_cv_func_$1_use = x"yes"; then 593 AC_CHECK_FUNCS($1) 594 fi 595]) 596 597dnl 598dnl Check to see if the (unistd function) argument passed is 599dnl 1) declared when using the c++ compiler 600dnl 2) has "C" linkage 601dnl 602dnl argument 1 is name of function to check 603dnl 604dnl ASSUMES argument is a function with ONE parameter 605dnl 606dnl GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1 607AC_DEFUN(GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1, [ 608 AC_MSG_CHECKING([for $1 declaration]) 609 if test x${glibcpp_cv_func_$1_use+set} != xset; then 610 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ 611 AC_LANG_SAVE 612 AC_LANG_CPLUSPLUS 613 AC_TRY_COMPILE([#include <unistd.h>], 614 [ $1(0);], 615 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) 616 AC_LANG_RESTORE 617 ]) 618 fi 619 AC_MSG_RESULT($glibcpp_cv_func_$1_use) 620 if test x$glibcpp_cv_func_$1_use = x"yes"; then 621 AC_CHECK_FUNCS($1) 622 fi 623]) 624 625dnl 626dnl Because the builtins are picky picky picky about the arguments they take, 627dnl do an explict linkage tests here. 628dnl Check to see if the (math function) argument passed is 629dnl 1) declared when using the c++ compiler 630dnl 2) has "C" linkage 631dnl 632dnl Define HAVE_CARGF etc if "cargf" is declared and links 633dnl 634dnl argument 1 is name of function to check 635dnl 636dnl ASSUMES argument is a math function with ONE parameter 637dnl 638dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1 639AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [ 640 AC_MSG_CHECKING([for $1 declaration]) 641 if test x${glibcpp_cv_func_$1_use+set} != xset; then 642 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [ 643 AC_LANG_SAVE 644 AC_LANG_CPLUSPLUS 645 AC_TRY_COMPILE([#include <math.h>], 646 [ $1(0);], 647 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no]) 648 AC_LANG_RESTORE 649 ]) 650 fi 651 AC_MSG_RESULT($glibcpp_cv_func_$1_use) 652 if test x$glibcpp_cv_func_$1_use = x"yes"; then 653 AC_MSG_CHECKING([for $1 linkage]) 654 if test x${glibcpp_cv_func_$1_link+set} != xset; then 655 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [ 656 AC_TRY_LINK([#include <math.h>], 657 [ $1(0);], 658 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no]) 659 ]) 660 fi 661 AC_MSG_RESULT($glibcpp_cv_func_$1_link) 662 if test x$glibcpp_cv_func_$1_link = x"yes"; then 663 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` 664 AC_DEFINE_UNQUOTED(${ac_tr_func}) 665 fi 666 fi 667]) 668 669 670dnl 671dnl Check to see what builtin math functions are supported 672dnl 673dnl check for __builtin_abs 674dnl check for __builtin_fabsf 675dnl check for __builtin_fabs 676dnl check for __builtin_fabl 677dnl check for __builtin_labs 678dnl check for __builtin_sqrtf 679dnl check for __builtin_sqrtl 680dnl check for __builtin_sqrt 681dnl check for __builtin_sinf 682dnl check for __builtin_sin 683dnl check for __builtin_sinl 684dnl check for __builtin_cosf 685dnl check for __builtin_cos 686dnl check for __builtin_cosl 687dnl 688dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT 689AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [ 690 dnl Test for builtin math functions. 691 dnl These are made in gcc/c-common.c 692 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs) 693 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf) 694 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs) 695 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl) 696 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs) 697 698 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf) 699 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt) 700 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl) 701 702 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf) 703 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin) 704 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl) 705 706 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf) 707 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos) 708 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl) 709 710 dnl There is, without a doubt, a more elegant way to have these 711 dnl names exported so that they won't be stripped out of acconfig.h by 712 dnl autoheader. I leave this as an exercise to somebody less frustrated 713 dnl than I.... please email the libstdc++ list if you can figure out a 714 dnl more elegant approach (see autoconf/acgen.m4 and specifically 715 dnl AC_CHECK_FUNC for things to steal.) 716 dummyvar=no 717 if test x$dummyvar = x"yes"; then 718 AC_DEFINE(HAVE___BUILTIN_ABS) 719 AC_DEFINE(HAVE___BUILTIN_LABS) 720 AC_DEFINE(HAVE___BUILTIN_COS) 721 AC_DEFINE(HAVE___BUILTIN_COSF) 722 AC_DEFINE(HAVE___BUILTIN_COSL) 723 AC_DEFINE(HAVE___BUILTIN_FABS) 724 AC_DEFINE(HAVE___BUILTIN_FABSF) 725 AC_DEFINE(HAVE___BUILTIN_FABSL) 726 AC_DEFINE(HAVE___BUILTIN_SIN) 727 AC_DEFINE(HAVE___BUILTIN_SINF) 728 AC_DEFINE(HAVE___BUILTIN_SINL) 729 AC_DEFINE(HAVE___BUILTIN_SQRT) 730 AC_DEFINE(HAVE___BUILTIN_SQRTF) 731 AC_DEFINE(HAVE___BUILTIN_SQRTL) 732 fi 733]) 734 735 736dnl 737dnl Check to see what the underlying c library is like 738dnl These checks need to do two things: 739dnl 1) make sure the name is declared when using the c++ compiler 740dnl 2) make sure the name has "C" linkage 741dnl This might seem like overkill but experience has shown that it's not... 742dnl 743dnl Define HAVE_STRTOLD if "strtold" is declared and links 744dnl Define HAVE_STRTOF if "strtof" is declared and links 745dnl Define HAVE_DRAND48 if "drand48" is declared and links 746dnl 747dnl GLIBCPP_CHECK_STDLIB_SUPPORT 748AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [ 749 ac_test_CXXFLAGS="${CXXFLAGS+set}" 750 ac_save_CXXFLAGS="$CXXFLAGS" 751 CXXFLAGS='-fno-builtins -D_GNU_SOURCE' 752 753 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold) 754 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof) 755 AC_CHECK_FUNCS(drand48) 756 757 CXXFLAGS="$ac_save_CXXFLAGS" 758]) 759 760dnl 761dnl Check to see what the underlying c library is like 762dnl These checks need to do two things: 763dnl 1) make sure the name is declared when using the c++ compiler 764dnl 2) make sure the name has "C" linkage 765dnl This might seem like overkill but experience has shown that it's not... 766dnl 767dnl Define HAVE_ISATTY if "isatty" is declared and links 768dnl 769dnl GLIBCPP_CHECK_UNISTD_SUPPORT 770AC_DEFUN(GLIBCPP_CHECK_UNISTD_SUPPORT, [ 771 ac_test_CXXFLAGS="${CXXFLAGS+set}" 772 ac_save_CXXFLAGS="$CXXFLAGS" 773 CXXFLAGS='-fno-builtins -D_GNU_SOURCE' 774 775 GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1(isatty) 776 777 CXXFLAGS="$ac_save_CXXFLAGS" 778]) 779 780dnl 781dnl Check to see what the underlying c library or math library is like. 782dnl These checks need to do two things: 783dnl 1) make sure the name is declared when using the c++ compiler 784dnl 2) make sure the name has "C" linkage 785dnl This might seem like overkill but experience has shown that it's not... 786dnl 787dnl Define HAVE_CARGF etc if "cargf" is found. 788dnl 789dnl GLIBCPP_CHECK_MATH_SUPPORT 790AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [ 791 ac_test_CXXFLAGS="${CXXFLAGS+set}" 792 ac_save_CXXFLAGS="$CXXFLAGS" 793 CXXFLAGS='-fno-builtins -D_GNU_SOURCE' 794 795 dnl Check libm 796 AC_CHECK_LIB(m, sin, libm="-lm") 797 ac_save_LIBS="$LIBS" 798 LIBS="$LIBS $libm" 799 800 dnl Check to see if certain C math functions exist. 801 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf) 802 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan) 803 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite) 804 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign) 805 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos) 806 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass) 807 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass) 808 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot) 809 810 dnl Check to see if basic C math functions have float versions. 811 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig, 812 float_trig, 813 acosf asinf atanf \ 814 cosf sinf tanf \ 815 coshf sinhf tanhf) 816 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round, 817 float_round, 818 ceilf floorf) 819 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf) 820 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf) 821 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff) 822 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f) 823 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf) 824 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf) 825 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf) 826 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf) 827 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf) 828 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf) 829 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f) 830 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff) 831 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf) 832 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf) 833 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf) 834 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef) 835 836 dnl Check to see if basic C math functions have long double versions. 837 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig, 838 long_double_trig, 839 acosl asinl atanl \ 840 cosl sinl tanl \ 841 coshl sinhl tanhl) 842 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round, 843 long_double_round, 844 ceill floorl) 845 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl) 846 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl) 847 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl) 848 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l) 849 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl) 850 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl) 851 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl) 852 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl) 853 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl) 854 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl) 855 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl) 856 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l) 857 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl) 858 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl) 859 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl) 860 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl) 861 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel) 862 863 dnl Some runtimes have these functions with a preceding underscore. Please 864 dnl keep this sync'd with the one above. And if you add any new symbol, 865 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h. 866 dnl Check to see if certain C math functions exist. 867 868 dnl Check to see if basic C math functions have float versions. 869 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig, 870 _float_trig, 871 _acosf _asinf _atanf \ 872 _cosf _sinf _tanf \ 873 _coshf _sinhf _tanhf) 874 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round, 875 _float_round, 876 _ceilf _floorf) 877 878 dnl Check to see if basic C math functions have long double versions. 879 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig, 880 _long_double_trig, 881 _acosl _asinl _atanl \ 882 _cosl _sinl _tanl \ 883 _coshl _sinhl _tanhl) 884 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round, 885 _long_double_round, 886 _ceill _floorl) 887 888 LIBS="$ac_save_LIBS" 889 CXXFLAGS="$ac_save_CXXFLAGS" 890]) 891 892 893dnl 894dnl Check to see if there is native support for complex 895dnl 896dnl Don't compile bits in math/* if native support exits. 897dnl 898dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found. 899dnl 900dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT 901AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [ 902 dnl Check for complex versions of math functions of platform. 903 AC_CHECK_LIB(m, main) 904 AC_REPLACE_MATHFUNCS(nan copysignf) 905 906 dnl For __signbit to signbit conversions. 907 AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"]) 908 AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"]) 909 910 dnl Compile the long double complex functions only if the function 911 dnl provides the non-complex long double functions that are needed. 912 dnl Currently this includes copysignl, which should be 913 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above. 914 if test x$ac_cv_func_copysignl = x"yes"; then 915 AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"]) 916 fi 917 918 AC_SUBST(LIBMATHOBJS) 919]) 920 921 922dnl Check to see what architecture and operating system we are compiling 923dnl for. Also, if architecture- or OS-specific flags are required for 924dnl compilation, pick them up here. 925dnl 926dnl GLIBCPP_CHECK_TARGET 927AC_DEFUN(GLIBCPP_CHECK_TARGET, [ 928 . [$]{glibcpp_basedir}/configure.target 929 AC_MSG_RESULT(CPU config directory is $cpu_include_dir) 930 AC_MSG_RESULT(OS config directory is $os_include_dir) 931]) 932 933 934dnl 935dnl Check to see if this target can enable the wchar_t parts of libstdc++. 936dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This 937dnl must have been previously checked.) 938dnl 939dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found 940dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h 941dnl 942dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT 943AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [ 944 945 dnl Test wchar.h for mbstate_t, which is needed for char_traits and 946 dnl others even if wchar_t support is not on. 947 AC_MSG_CHECKING([for mbstate_t]) 948 AC_TRY_COMPILE([#include <wchar.h>], 949 [mbstate_t teststate;], 950 have_mbstate_t=yes, have_mbstate_t=no) 951 AC_MSG_RESULT($have_mbstate_t) 952 if test x"$have_mbstate_t" = xyes; then 953 AC_DEFINE(HAVE_MBSTATE_T) 954 fi 955 956 dnl Sanity check for existence of ISO C99 headers for extended encoding. 957 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) 958 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) 959 960 dnl Only continue checking if the ISO C99 headers exist and support is on. 961 if test x"$ac_has_wchar_h" = xyes && 962 test x"$ac_has_wctype_h" = xyes && 963 test x"$enable_c_mbchar" != xno; then 964 965 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before 966 dnl numeric_limits can instantiate type_traits<wchar_t> 967 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX]) 968 AC_TRY_COMPILE([#include <wchar.h>], 969 [int i = WCHAR_MIN; int j = WCHAR_MAX;], 970 has_wchar_minmax=yes, has_wchar_minmax=no) 971 AC_MSG_RESULT($has_wchar_minmax) 972 973 dnl Test wchar.h for WEOF, which is what we use to determine whether 974 dnl to specialize for char_traits<wchar_t> or not. 975 AC_MSG_CHECKING([for WEOF]) 976 AC_TRY_COMPILE([ 977 #include <wchar.h> 978 #include <stddef.h>], 979 [wint_t i = WEOF;], 980 has_weof=yes, has_weof=no) 981 AC_MSG_RESULT($has_weof) 982 983 dnl Tests for wide character functions used in char_traits<wchar_t>. 984 ac_wfuncs=yes 985 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \ 986 ac_wfuncs=no) 987 988 dnl Checks for names injected into std:: by the c_std headers. 989 AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \ 990 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \ 991 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \ 992 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \ 993 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \ 994 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \ 995 ac_wfuncs=no) 996 997 AC_MSG_CHECKING([for ISO C99 wchar_t support]) 998 if test x"$has_weof" = xyes && 999 test x"$has_wchar_minmax" = xyes && 1000 test x"$ac_wfuncs" = xyes; then 1001 ac_isoC99_wchar_t=yes 1002 else 1003 ac_isoC99_wchar_t=no 1004 fi 1005 AC_MSG_RESULT($ac_isoC99_wchar_t) 1006 1007 dnl Use iconv for wchar_t to char conversions. As such, check for 1008 dnl X/Open Portability Guide, version 2 features (XPG2). 1009 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no) 1010 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no) 1011 1012 dnl Check for existence of libiconv.a providing XPG2 wchar_t support. 1013 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv") 1014 ac_save_LIBS="$LIBS" 1015 LIBS="$LIBS $libiconv" 1016 1017 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \ 1018 ac_XPG2funcs=yes, ac_XPG2funcs=no) 1019 1020 LIBS="$ac_save_LIBS" 1021 1022 AC_MSG_CHECKING([for XPG2 wchar_t support]) 1023 if test x"$ac_has_iconv_h" = xyes && 1024 test x"$ac_has_langinfo_h" = xyes && 1025 test x"$ac_XPG2funcs" = xyes; then 1026 ac_XPG2_wchar_t=yes 1027 else 1028 ac_XPG2_wchar_t=no 1029 fi 1030 AC_MSG_RESULT($ac_XPG2_wchar_t) 1031 1032 dnl At the moment, only enable wchar_t specializations if all the 1033 dnl above support is present. 1034 AC_MSG_CHECKING([for enabled wchar_t specializations]) 1035 if test x"$ac_isoC99_wchar_t" = xyes && 1036 test x"$ac_XPG2_wchar_t" = xyes; then 1037 AC_DEFINE(_GLIBCPP_USE_WCHAR_T) 1038 AC_MSG_RESULT("yes") 1039 else 1040 AC_MSG_RESULT("no") 1041 fi 1042 else 1043 dnl Wide characters disabled by the user. 1044 AC_MSG_WARN([wchar_t support disabled.]) 1045 fi 1046]) 1047 1048 1049dnl 1050dnl Check for special debugging mode; not for production use. 1051dnl 1052dnl GLIBCPP_ENABLE_DEBUG 1053dnl --enable-debug sets '-ggdb3 -O0'. 1054dnl --disable-debug sets '-g' and whatever optimization options the 1055dnl compiler can handle. 1056dnl + --enable-maintainer-mode automatically defaults this to on. 1057dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...? 1058dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)] 1059dnl Where DEFAULT is either `yes' or `no'. If ommitted, it 1060dnl defaults to `no'. 1061AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl 1062define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl 1063AC_ARG_ENABLE(debug, 1064changequote(<<, >>)dnl 1065<< --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT], 1066changequote([, ])dnl 1067[case "${enableval}" in 1068 yes) enable_debug=yes ;; 1069 no) enable_debug=no ;; 1070 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;; 1071 esac], 1072enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl 1073 1074dnl Option parsed, now set things appropriately 1075case "${enable_debug}" in 1076 yes) 1077 DEBUG_FLAGS='-O0 -ggdb3' 1078 ;; 1079 no) 1080 DEBUG_FLAGS='-g' 1081 ;; 1082esac 1083AC_SUBST(DEBUG_FLAGS) 1084]) 1085 1086 1087dnl 1088dnl Check for "unusual" flags to pass to the compiler while building. 1089dnl 1090dnl GLIBCPP_ENABLE_CXX_FLAGS 1091dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing 1092dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc. 1093dnl Somehow this same set of flags must be passed when [re]building 1094dnl libgcc. 1095dnl --disable-cxx-flags passes nothing. 1096dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html 1097dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html 1098dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html 1099dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags) 1100dnl If "default flags" is an empty string (or "none"), the effect is 1101dnl the same as --disable or --enable=no. 1102AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl 1103define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl 1104AC_ARG_ENABLE(cxx-flags, 1105changequote(<<, >>)dnl 1106<< --enable-cxx-flags=FLAGS pass compiler FLAGS when building library; 1107 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], 1108changequote([, ])dnl 1109[case "x$enableval" in 1110 xyes) 1111 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;; 1112 xno|x) 1113 enable_cxx_flags='' ;; 1114 *) 1115 enable_cxx_flags="$enableval" ;; 1116 esac], 1117enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT') 1118 1119dnl Thinko on my part during design. This kludge is the workaround. 1120if test "$enable_cxx_flags" = "none"; then 1121 enable_cxx_flags=''; 1122fi 1123 1124dnl Run through flags (either default or command-line) and set anything 1125dnl extra (e.g., #defines) that must accompany particular g++ options. 1126if test -n "$enable_cxx_flags"; then 1127 for f in $enable_cxx_flags; do 1128 case "$f" in 1129 -fhonor-std) ;; 1130 -*) ;; 1131 *) # and we're trying to pass /what/ exactly? 1132 AC_MSG_ERROR([compiler flags start with a -]) ;; 1133 esac 1134 done 1135fi 1136EXTRA_CXX_FLAGS="$enable_cxx_flags" 1137AC_SUBST(EXTRA_CXX_FLAGS) 1138]) 1139 1140 1141dnl 1142dnl Check for which locale library to use: gnu or generic. 1143dnl 1144dnl GLIBCPP_ENABLE_CLOCALE 1145dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends 1146dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends 1147dnl 1148dnl default is generic 1149dnl 1150AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [ 1151 AC_MSG_CHECKING([for clocale to use]) 1152 AC_ARG_ENABLE(clocale, 1153 [ --enable-clocale enable model for target locale package. 1154 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic] 1155 ], 1156 if test x$enable_clocale = xno; then 1157 enable_clocale=no 1158 fi, 1159 enable_clocale=no) 1160 1161 enable_clocale_flag=$enable_clocale 1162 1163 dnl Probe for locale support if no specific model is specified. 1164 dnl Default to "generic" 1165 if test x$enable_clocale_flag = xno; then 1166 case x${target_os} in 1167 xlinux* | xgnu*) 1168 AC_EGREP_CPP([_GLIBCPP_ok], [ 1169 #include <features.h> 1170 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) 1171 _GLIBCPP_ok 1172 #endif 1173 ], enable_clocale_flag=gnu, enable_clocale_flag=generic) 1174 1175 # Test for bugs early in glibc-2.2.x series 1176 if test x$enable_clocale_flag = xgnu; then 1177 AC_TRY_RUN([ 1178 #define _GNU_SOURCE 1 1179 #include <locale.h> 1180 #include <string.h> 1181 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) 1182 extern __typeof(newlocale) __newlocale; 1183 extern __typeof(duplocale) __duplocale; 1184 extern __typeof(strcoll_l) __strcoll_l; 1185 #endif 1186 int main() 1187 { 1188 const char __one[] = "�uglein Augmen"; 1189 const char __two[] = "�uglein"; 1190 int i; 1191 int j; 1192 __locale_t loc; 1193 __locale_t loc_dup; 1194 loc = __newlocale(1 << LC_ALL, "de_DE", 0); 1195 loc_dup = __duplocale(loc); 1196 i = __strcoll_l(__one, __two, loc); 1197 j = __strcoll_l(__one, __two, loc_dup); 1198 return 0; 1199 } 1200 ], 1201 [enable_clocale_flag=gnu],[enable_clocale_flag=generic], 1202 [enable_clocale_flag=generic]) 1203 fi 1204 1205 # ... at some point put __strxfrm_l tests in as well. 1206 ;; 1207 *) 1208 enable_clocale_flag=generic 1209 ;; 1210 esac 1211 fi 1212 1213 dnl Deal with gettext issues. 1214 AC_ARG_ENABLE(nls, 1215 [ --enable-nls use Native Language Support (default)], 1216 , enable_nls=yes) 1217 USE_NLS=no 1218 1219 dnl Set configure bits for specified locale package 1220 case x${enable_clocale_flag} in 1221 xgeneric) 1222 AC_MSG_RESULT(generic) 1223 1224 CLOCALE_H=config/locale/generic/c_locale.h 1225 CLOCALE_CC=config/locale/generic/c_locale.cc 1226 CCODECVT_H=config/locale/generic/codecvt_specializations.h 1227 CCODECVT_CC=config/locale/generic/codecvt_members.cc 1228 CCOLLATE_CC=config/locale/generic/collate_members.cc 1229 CCTYPE_CC=config/locale/generic/ctype_members.cc 1230 CMESSAGES_H=config/locale/generic/messages_members.h 1231 CMESSAGES_CC=config/locale/generic/messages_members.cc 1232 CMONEY_CC=config/locale/generic/monetary_members.cc 1233 CNUMERIC_CC=config/locale/generic/numeric_members.cc 1234 CTIME_H=config/locale/generic/time_members.h 1235 CTIME_CC=config/locale/generic/time_members.cc 1236 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h 1237 ;; 1238 xgnu) 1239 AC_MSG_RESULT(gnu) 1240 1241 # Declare intention to use gettext, and add support for specific 1242 # languages. 1243 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT 1244 ALL_LINGUAS="de fr" 1245 1246 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc. 1247 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no) 1248 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then 1249 USE_NLS=yes 1250 fi 1251 # Export the build objects. 1252 for ling in $ALL_LINGUAS; do \ 1253 glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \ 1254 glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \ 1255 done 1256 AC_SUBST(glibcpp_MOFILES) 1257 AC_SUBST(glibcpp_POFILES) 1258 1259 CLOCALE_H=config/locale/gnu/c_locale.h 1260 CLOCALE_CC=config/locale/gnu/c_locale.cc 1261 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h 1262 CCODECVT_CC=config/locale/gnu/codecvt_members.cc 1263 CCOLLATE_CC=config/locale/gnu/collate_members.cc 1264 CCTYPE_CC=config/locale/gnu/ctype_members.cc 1265 CMESSAGES_H=config/locale/gnu/messages_members.h 1266 CMESSAGES_CC=config/locale/gnu/messages_members.cc 1267 CMONEY_CC=config/locale/gnu/monetary_members.cc 1268 CNUMERIC_CC=config/locale/gnu/numeric_members.cc 1269 CTIME_H=config/locale/gnu/time_members.h 1270 CTIME_CC=config/locale/gnu/time_members.cc 1271 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h 1272 ;; 1273 xieee_1003.1-2001) 1274 AC_MSG_RESULT(generic) 1275 1276 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h 1277 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc 1278 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h 1279 CCODECVT_CC=config/locale/generic/codecvt_members.cc 1280 CCOLLATE_CC=config/locale/generic/collate_members.cc 1281 CCTYPE_CC=config/locale/generic/ctype_members.cc 1282 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h 1283 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc 1284 CMONEY_CC=config/locale/generic/monetary_members.cc 1285 CNUMERIC_CC=config/locale/generic/numeric_members.cc 1286 CTIME_H=config/locale/generic/time_members.h 1287 CTIME_CC=config/locale/generic/time_members.cc 1288 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h 1289 ;; 1290 *) 1291 echo "$enable_clocale is an unknown locale package" 1>&2 1292 exit 1 1293 ;; 1294 esac 1295 1296 # This is where the testsuite looks for locale catalogs, using the 1297 # -DLOCALEDIR define during testsuite compilation. 1298 glibcpp_localedir=${glibcpp_builddir}/po/share/locale 1299 AC_SUBST(glibcpp_localedir) 1300 1301 # For the time being, transform ctype_noninline.h to ctype_members_char.cc 1302# CCTYPE_CHAR_CC=config/${os_include_dir}/ctype_noninline.h 1303 1304 AC_SUBST(USE_NLS) 1305 AC_SUBST(CLOCALE_H) 1306 AC_SUBST(CCODECVT_H) 1307 AC_SUBST(CMESSAGES_H) 1308 AC_SUBST(CTIME_H) 1309 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc) 1310 AC_LINK_FILES($CCODECVT_CC, src/codecvt_members.cc) 1311 AC_LINK_FILES($CCOLLATE_CC, src/collate_members.cc) 1312# AC_LINK_FILES($CCTYPE_CHAR_CC, src/ctype_members_char.cc) 1313 AC_LINK_FILES($CCTYPE_CC, src/ctype_members.cc) 1314 AC_LINK_FILES($CMESSAGES_CC, src/messages_members.cc) 1315 AC_LINK_FILES($CMONEY_CC, src/monetary_members.cc) 1316 AC_LINK_FILES($CNUMERIC_CC, src/numeric_members.cc) 1317 AC_LINK_FILES($CTIME_CC, src/time_members.cc) 1318 AC_LINK_FILES($CLOCALE_INTERNAL_H, src/c++locale_internal.h) 1319]) 1320 1321 1322dnl 1323dnl Check for which I/O library to use: libio, or something specific. 1324dnl 1325dnl GLIBCPP_ENABLE_CSTDIO 1326dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends 1327dnl 1328dnl default is stdio 1329dnl 1330AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [ 1331 AC_MSG_CHECKING([for cstdio to use]) 1332 AC_ARG_ENABLE(cstdio, 1333 [ --enable-cstdio enable stdio for target io package. 1334 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio] 1335 ], 1336 if test x$enable_cstdio = xno; then 1337 enable_cstdio=stdio 1338 fi, 1339 enable_cstdio=stdio) 1340 1341 enable_cstdio_flag=$enable_cstdio 1342 1343 dnl Check if a valid I/O package 1344 case x${enable_cstdio_flag} in 1345 xlibio) 1346 CSTDIO_H=config/io/c_io_libio.h 1347 BASIC_FILE_H=config/io/basic_file_libio.h 1348 BASIC_FILE_CC=config/io/basic_file_libio.cc 1349 AC_MSG_RESULT(libio) 1350 1351 # see if we are on a system with libio native (ie, linux) 1352 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no) 1353 1354 # Need to check and see what version of glibc is being used. If 1355 # it's not glibc-2.2 or higher, then we'll need to go ahead and 1356 # compile most of libio for linux systems. 1357 if test x$has_libio = x"yes"; then 1358 case "$target" in 1359 *-*-linux*) 1360 AC_MSG_CHECKING([for glibc version >= 2.2]) 1361 AC_EGREP_CPP([ok], [ 1362 #include <features.h> 1363 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) 1364 ok 1365 #endif 1366 ], glibc_satisfactory=yes, glibc_satisfactory=no) 1367 AC_MSG_RESULT($glibc_satisfactory) 1368 ;; 1369 esac 1370 1371 # XXX at the moment, admit defeat and force the recompilation 1372 # XXX of glibc even on glibc-2.2 systems, because libio is not synched. 1373 glibc_satisfactory=no 1374 1375 if test x$glibc_satisfactory = x"yes"; then 1376 need_libio=no 1377 need_wlibio=no 1378 else 1379 need_libio=yes 1380 # bkoz XXX need to add checks to enable this 1381 # pme XXX here's a first pass at such a check 1382 if test x$enable_c_mbchar != xno; then 1383 need_wlibio=yes 1384 else 1385 need_wlibio=no 1386 fi 1387 fi 1388 1389 else 1390 # Using libio, but <libio.h> doesn't exist on the target system. . . 1391 need_libio=yes 1392 # bkoz XXX need to add checks to enable this 1393 # pme XXX here's a first pass at such a check 1394 if test x$enable_c_mbchar != xno; then 1395 need_wlibio=yes 1396 else 1397 need_wlibio=no 1398 fi 1399 fi 1400 ;; 1401 xstdio | x | xno | xnone | xyes) 1402 # default 1403 CSTDIO_H=config/io/c_io_stdio.h 1404 BASIC_FILE_H=config/io/basic_file_stdio.h 1405 BASIC_FILE_CC=config/io/basic_file_stdio.cc 1406 AC_MSG_RESULT(stdio) 1407 1408 # We're not using stdio. 1409 need_libio=no 1410 need_wlibio=no 1411 ;; 1412 *) 1413 echo "$enable_cstdio is an unknown io package" 1>&2 1414 exit 1 1415 ;; 1416 esac 1417 AC_SUBST(CSTDIO_H) 1418 AC_SUBST(BASIC_FILE_H) 1419 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc) 1420 1421 # 2000-08-04 bkoz hack 1422 CCODECVT_C=config/io/c_io_libio_codecvt.c 1423 AC_SUBST(CCODECVT_C) 1424 # 2000-08-04 bkoz hack 1425 1426 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO, 1427 test "$need_libio" = yes || test "$need_wlibio" = yes) 1428 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes) 1429 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes) 1430 if test "$need_libio" = yes || test "$need_wlibio" = yes; then 1431 libio_la=../libio/libio.la 1432 else 1433 libio_la= 1434 fi 1435 AC_SUBST(libio_la) 1436]) 1437 1438 1439dnl 1440dnl Setup to use the gcc gthr.h thread-specific memory and mutex model. 1441dnl We must stage the required headers so that they will be installed 1442dnl with the library (unlike libgcc, the STL implementation is provided 1443dnl solely within headers). Since we must not inject random user-space 1444dnl macro names into user-provided C++ code, we first stage into <file>-in 1445dnl and process to <file> with an output command. The reason for a two- 1446dnl stage process here is to correctly handle $srcdir!=$objdir without 1447dnl having to write complex code (the sed commands to clean the macro 1448dnl namespace are complex and fragile enough as it is). We must also 1449dnl add a relative path so that -I- is supported properly. 1450dnl 1451AC_DEFUN(GLIBCPP_ENABLE_THREADS, [ 1452 AC_MSG_CHECKING([for thread model used by GCC]) 1453 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'` 1454 AC_MSG_RESULT([$target_thread_file]) 1455 1456 if test $target_thread_file != single; then 1457 AC_DEFINE(HAVE_GTHR_DEFAULT) 1458 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__) 1459 fi 1460 1461 glibcpp_thread_h=gthr-$target_thread_file.h 1462 AC_SUBST(glibcpp_thread_h) 1463]) 1464 1465 1466dnl 1467dnl Check for exception handling support. If an explicit enable/disable 1468dnl sjlj exceptions is given, we don't have to detect. Otherwise the 1469dnl target may or may not support call frame exceptions. 1470dnl 1471dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS 1472dnl --enable-sjlj-exceptions forces the use of builtin setjmp. 1473dnl --disable-sjlj-exceptions forces the use of call frame unwinding. 1474dnl 1475dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it. 1476dnl 1477AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [ 1478 AC_MSG_CHECKING([for exception model to use]) 1479 AC_LANG_SAVE 1480 AC_LANG_CPLUSPLUS 1481 AC_ARG_ENABLE(sjlj-exceptions, 1482 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions], 1483 [:], 1484 [dnl Botheration. Now we've got to detect the exception model. 1485 dnl Link tests against libgcc.a are problematic since -- at least 1486 dnl as of this writing -- we've not been given proper -L bits for 1487 dnl single-tree newlib and libgloss. 1488 dnl 1489 dnl This is what AC_TRY_COMPILE would do if it didn't delete the 1490 dnl conftest files before we got a change to grep them first. 1491 cat > conftest.$ac_ext << EOF 1492[#]line __oline__ "configure" 1493struct S { ~S(); }; 1494void bar(); 1495void foo() 1496{ 1497 S s; 1498 bar(); 1499} 1500EOF 1501 old_CXXFLAGS="$CXXFLAGS" 1502 CXXFLAGS="-S -fexceptions" 1503 if AC_TRY_EVAL(ac_compile); then 1504 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then 1505 enable_sjlj_exceptions=yes 1506 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then 1507 enable_sjlj_exceptions=no 1508 fi 1509 fi 1510 CXXFLAGS="$old_CXXFLAGS" 1511 rm -f conftest*]) 1512 if test x$enable_sjlj_exceptions = xyes; then 1513 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1, 1514 [Define if the compiler is configured for setjmp/longjmp exceptions.]) 1515 ac_exception_model_name=sjlj 1516 elif test x$enable_sjlj_exceptions = xno; then 1517 ac_exception_model_name="call frame" 1518 else 1519 AC_MSG_ERROR([unable to detect exception model]) 1520 fi 1521 AC_LANG_RESTORE 1522 AC_MSG_RESULT($ac_exception_model_name) 1523]) 1524 1525 1526dnl 1527dnl Check for libunwind exception handling support. If enabled then 1528dnl we assume that the _Unwind_* functions that make up the Unwind ABI 1529dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by 1530dnl libunwind instead of libgcc and that libstdc++ has a dependency 1531dnl on libunwind as well as libgcc. 1532dnl 1533dnl GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS 1534dnl --enable-libunwind-exceptions forces the use of libunwind. 1535dnl --disable-libunwind-exceptions assumes there is no libunwind. 1536dnl 1537dnl Define _GLIBCPP_LIBUNWIND_EXCEPTIONS if requested. 1538dnl 1539AC_DEFUN(GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS, [ 1540 AC_MSG_CHECKING([for use of libunwind]) 1541 AC_ARG_ENABLE(libunwind-exceptions, 1542 [ --enable-libunwind-exceptions force use of libunwind for exceptions], 1543 use_libunwind_exceptions=$enableval, 1544 use_libunwind_exceptions=no) 1545 AC_MSG_RESULT($use_libunwind_exceptions) 1546 dnl Option parsed, now set things appropriately 1547 if test x"$use_libunwind_exceptions" = xyes; then 1548 LIBUNWIND_FLAG="-lunwind" 1549 else 1550 LIBUNWIND_FLAG="" 1551 fi 1552 AC_SUBST(LIBUNWIND_FLAG) 1553]) 1554 1555dnl 1556dnl Check for ISO/IEC 9899:1999 "C99" support. 1557dnl 1558dnl GLIBCPP_ENABLE_C99 1559dnl --enable-c99 defines _GLIBCPP_USE_C99 1560dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined 1561dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)] 1562dnl Where DEFAULT is either `yes' or `no'. If omitted, it 1563dnl defaults to `no'. 1564dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'. 1565dnl 1566dnl GLIBCPP_ENABLE_C99 1567AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl 1568 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl 1569 1570 AC_ARG_ENABLE(c99, 1571 changequote(<<, >>)dnl 1572 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT], 1573 changequote([, ])dnl 1574 [case "$enableval" in 1575 yes) enable_c99=yes ;; 1576 no) enable_c99=no ;; 1577 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;; 1578 esac], 1579 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl 1580 1581 AC_LANG_SAVE 1582 AC_LANG_CPLUSPLUS 1583 1584 # Check for the existence of <math.h> functions used if C99 is enabled. 1585 ac_c99_math=yes; 1586 AC_MSG_CHECKING([for ISO C99 support in <math.h>]) 1587 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no]) 1588 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no]) 1589 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no]) 1590 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no]) 1591 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no]) 1592 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no]) 1593 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no]) 1594 AC_TRY_COMPILE([#include <math.h>], 1595 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no]) 1596 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no]) 1597 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no]) 1598 AC_TRY_COMPILE([#include <math.h>], 1599 [islessgreater(0.0,0.0);],, [ac_c99_math=no]) 1600 AC_TRY_COMPILE([#include <math.h>], 1601 [isunordered(0.0,0.0);],, [ac_c99_math=no]) 1602 AC_MSG_RESULT($ac_c99_math) 1603 1604 # Check for the existence in <stdio.h> of vscanf, et. al. 1605 ac_c99_stdio=yes; 1606 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>]) 1607 AC_TRY_COMPILE([#include <stdio.h>], 1608 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no]) 1609 AC_TRY_COMPILE([#include <stdio.h> 1610 #include <stdarg.h> 1611 void foo(char* fmt, ...) 1612 {va_list args; va_start(args, fmt); 1613 vfscanf(stderr, "%i", args);}], 1614 [],, [ac_c99_stdio=no]) 1615 AC_TRY_COMPILE([#include <stdio.h> 1616 #include <stdarg.h> 1617 void foo(char* fmt, ...) 1618 {va_list args; va_start(args, fmt); 1619 vscanf("%i", args);}], 1620 [],, [ac_c99_stdio=no]) 1621 AC_TRY_COMPILE([#include <stdio.h> 1622 #include <stdarg.h> 1623 void foo(char* fmt, ...) 1624 {va_list args; va_start(args, fmt); 1625 vsnprintf(fmt, 0, "%i", args);}], 1626 [],, [ac_c99_stdio=no]) 1627 AC_TRY_COMPILE([#include <stdio.h> 1628 #include <stdarg.h> 1629 void foo(char* fmt, ...) 1630 {va_list args; va_start(args, fmt); 1631 vsscanf(fmt, "%i", args);}], 1632 [],, [ac_c99_stdio=no]) 1633 AC_MSG_RESULT($ac_c99_stdio) 1634 1635 # Check for the existence in <stdlib.h> of lldiv_t, et. al. 1636 ac_c99_stdlib=yes; 1637 AC_MSG_CHECKING([for lldiv_t declaration]) 1638 AC_CACHE_VAL(ac_c99_lldiv_t, [ 1639 AC_TRY_COMPILE([#include <stdlib.h>], 1640 [ lldiv_t mydivt;], 1641 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no]) 1642 ]) 1643 AC_MSG_RESULT($ac_c99_lldiv_t) 1644 1645 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>]) 1646 AC_TRY_COMPILE([#include <stdlib.h>], 1647 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no]) 1648 AC_TRY_COMPILE([#include <stdlib.h>], 1649 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no]) 1650 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no]) 1651 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no]) 1652 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no]) 1653 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no]) 1654 if test x"$ac_c99_lldiv_t" = x"no"; then 1655 ac_c99_stdlib=no; 1656 fi; 1657 AC_MSG_RESULT($ac_c99_stdlib) 1658 1659 # Check for the existence of <wchar.h> functions used if C99 is enabled. 1660 # XXX the wchar.h checks should be rolled into the general C99 bits. 1661 ac_c99_wchar=yes; 1662 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>]) 1663 AC_TRY_COMPILE([#include <wchar.h>], 1664 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no]) 1665 AC_TRY_COMPILE([#include <wchar.h>], 1666 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no]) 1667 AC_TRY_COMPILE([#include <wchar.h>], 1668 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no]) 1669 AC_MSG_RESULT($ac_c99_wchar) 1670 1671 AC_MSG_CHECKING([for enabled ISO C99 support]) 1672 if test x"$ac_c99_math" = x"no" || 1673 test x"$ac_c99_stdio" = x"no" || 1674 test x"$ac_c99_stdlib" = x"no" || 1675 test x"$ac_c99_wchar" = x"no"; then 1676 enable_c99=no; 1677 fi; 1678 AC_MSG_RESULT($enable_c99) 1679 1680 # Option parsed, now set things appropriately 1681 if test x"$enable_c99" = x"yes"; then 1682 AC_DEFINE(_GLIBCPP_USE_C99) 1683 fi 1684 1685 AC_LANG_RESTORE 1686]) 1687 1688 1689dnl 1690dnl Check for template specializations for the 'long long' type extension. 1691dnl The result determines only whether 'long long' I/O is enabled; things 1692dnl like numeric_limits<> specializations are always available. 1693dnl 1694dnl GLIBCPP_ENABLE_LONG_LONG 1695dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG 1696dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined 1697dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)] 1698dnl Where DEFAULT is either `yes' or `no'. If omitted, it 1699dnl defaults to `no'. 1700dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'. 1701dnl 1702dnl GLIBCPP_ENABLE_LONG_LONG 1703AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl 1704 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl 1705 1706 AC_ARG_ENABLE(long-long, 1707 changequote(<<, >>)dnl 1708 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT], 1709 changequote([, ])dnl 1710 [case "$enableval" in 1711 yes) enable_long_long=yes ;; 1712 no) enable_long_long=no ;; 1713 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;; 1714 esac], 1715 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl 1716 1717 AC_LANG_SAVE 1718 AC_LANG_CPLUSPLUS 1719 1720 AC_MSG_CHECKING([for enabled long long I/O support]) 1721 # iostreams require strtoll, strtoull to compile 1722 AC_TRY_COMPILE([#include <stdlib.h>], 1723 [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no]) 1724 AC_TRY_COMPILE([#include <stdlib.h>], 1725 [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no]) 1726 1727 # Option parsed, now set things appropriately 1728 if test x"$enable_long_long" = xyes; then 1729 AC_DEFINE(_GLIBCPP_USE_LONG_LONG) 1730 fi 1731 AC_MSG_RESULT($enable_long_long) 1732 1733 AC_LANG_RESTORE 1734]) 1735 1736 1737dnl 1738dnl Check for what kind of C headers to use. 1739dnl 1740dnl GLIBCPP_ENABLE_CHEADERS 1741dnl --enable-cheaders= [does stuff]. 1742dnl --disable-cheaders [does not do anything, really]. 1743dnl + This will eventually need to be 'c_shadow' by default. 1744dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)] 1745dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'. 1746dnl If ommitted, it defaults to `c_std'. 1747AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl 1748define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl 1749AC_MSG_CHECKING([for c header strategy to use]) 1750AC_ARG_ENABLE(cheaders, 1751changequote(<<, >>)dnl 1752<< --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT], 1753changequote([, ]) 1754 [case "$enableval" in 1755 c) 1756 enable_cheaders=c 1757 ;; 1758 c_std) 1759 enable_cheaders=c_std 1760 ;; 1761 c_shadow) 1762 enable_cheaders=c_shadow 1763 ;; 1764 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers]) 1765 ;; 1766 esac], 1767 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT) 1768 AC_MSG_RESULT($enable_cheaders) 1769 1770 dnl Option parsed, now set things appropriately 1771 case "$enable_cheaders" in 1772 c_shadow) 1773 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow' 1774 ;; 1775 c_std) 1776 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std' 1777 ;; 1778 c) 1779 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c' 1780 ;; 1781 esac 1782 1783 AC_SUBST(C_INCLUDE_DIR) 1784 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C, test "$enable_cheaders" = c) 1785 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C_STD, test "$enable_cheaders" = c_std) 1786 AM_CONDITIONAL(GLIBCPP_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes) 1787]) 1788 1789 1790dnl 1791dnl Check for wide character support. Has the same effect as the option 1792dnl in gcc's configure, but in a form that autoconf can mess with. 1793dnl 1794dnl GLIBCPP_ENABLE_C_MBCHAR 1795dnl --enable-c-mbchar requests all the wchar_t stuff. 1796dnl --disable-c-mbchar doesn't. 1797dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)] 1798dnl Where DEFAULT is either `yes' or `no'. If ommitted, it 1799dnl defaults to `no'. 1800AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl 1801define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl 1802AC_ARG_ENABLE(c-mbchar, 1803changequote(<<, >>)dnl 1804<< --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], 1805changequote([, ])dnl 1806[case "$enableval" in 1807 yes) enable_c_mbchar=yes ;; 1808 no) enable_c_mbchar=no ;; 1809 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;; 1810 esac], 1811enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl 1812dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no. 1813]) 1814 1815 1816dnl 1817dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's. 1818dnl 1819dnl TOPLEVEL_INCLUDES 1820dnl LIBMATH_INCLUDES 1821dnl LIBSUPCXX_INCLUDES 1822dnl LIBIO_INCLUDES 1823dnl CSHADOW_INCLUDES 1824dnl 1825dnl GLIBCPP_EXPORT_INCLUDES 1826AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [ 1827 # Root level of the build directory include sources. 1828 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include" 1829 1830 # Passed down for canadian crosses. 1831 if test x"$CANADIAN" = xyes; then 1832 TOPLEVEL_INCLUDES='-I$(includedir)' 1833 fi 1834 1835 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath' 1836 1837 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++' 1838 1839 if test x"$need_libio" = xyes; then 1840 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio' 1841 AC_SUBST(LIBIO_INCLUDES) 1842 fi 1843 1844 # Now, export this to all the little Makefiles.... 1845 AC_SUBST(GLIBCPP_INCLUDES) 1846 AC_SUBST(TOPLEVEL_INCLUDES) 1847 AC_SUBST(LIBMATH_INCLUDES) 1848 AC_SUBST(LIBSUPCXX_INCLUDES) 1849]) 1850 1851 1852dnl 1853dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's. 1854dnl 1855AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [ 1856 # Optimization flags that are probably a good idea for thrill-seekers. Just 1857 # uncomment the lines below and make, everything else is ready to go... 1858 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc 1859 OPTIMIZE_CXXFLAGS= 1860 AC_SUBST(OPTIMIZE_CXXFLAGS) 1861 1862 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline' 1863 AC_SUBST(WARN_FLAGS) 1864]) 1865 1866dnl 1867dnl GLIBCPP_EXPORT_INSTALL_INFO 1868dnl calculates gxx_install_dir 1869dnl exports glibcpp_toolexecdir 1870dnl exports glibcpp_toolexeclibdir 1871dnl exports glibcpp_prefixdir 1872dnl 1873dnl Assumes cross_compiling bits already done, and with_cross_host in 1874dnl particular 1875dnl 1876dnl GLIBCPP_EXPORT_INSTALL_INFO 1877AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [ 1878# Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and 1879# exported correctly in GLIBCPP_CONFIGURE. 1880glibcpp_toolexecdir=no 1881glibcpp_toolexeclibdir=no 1882glibcpp_prefixdir=${prefix} 1883 1884# Process the option --with-gxx-include-dir=<path to include-files directory> 1885AC_MSG_CHECKING([for --with-gxx-include-dir]) 1886AC_ARG_WITH(gxx-include-dir, 1887[ --with-gxx-include-dir the installation directory for include files], 1888[case "${withval}" in 1889 yes) 1890 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir) 1891 gxx_include_dir=no 1892 ;; 1893 no) 1894 gxx_include_dir=no 1895 ;; 1896 *) 1897 gxx_include_dir=${withval} 1898 ;; 1899esac], [gxx_include_dir=no]) 1900AC_MSG_RESULT($gxx_include_dir) 1901 1902# Process the option "--enable-version-specific-runtime-libs" 1903AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) 1904AC_ARG_ENABLE(version-specific-runtime-libs, 1905[ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ], 1906[case "$enableval" in 1907 yes) version_specific_libs=yes ;; 1908 no) version_specific_libs=no ;; 1909 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; 1910 esac], 1911version_specific_libs=no)dnl 1912# Option set, now we can test it. 1913AC_MSG_RESULT($version_specific_libs) 1914 1915# Default case for install directory for include files. 1916if test $version_specific_libs = no && test $gxx_include_dir = no; then 1917 gxx_include_dir='$(prefix)'/include/c++/${gcc_version} 1918fi 1919 1920# Version-specific runtime libs processing. 1921if test $version_specific_libs = yes; then 1922 # Need the gcc compiler version to know where to install libraries 1923 # and header files if --enable-version-specific-runtime-libs option 1924 # is selected. 1925 if test x"$gxx_include_dir" = x"no"; then 1926 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++ 1927 fi 1928 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)' 1929 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)' 1930fi 1931 1932# Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir 1933# Install a library built with a cross compiler in tooldir, not libdir. 1934if test x"$glibcpp_toolexecdir" = x"no"; then 1935 if test -n "$with_cross_host" && 1936 test x"$with_cross_host" != x"no"; then 1937 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)' 1938 glibcpp_toolexeclibdir='$(toolexecdir)/lib' 1939 else 1940 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)' 1941 glibcpp_toolexeclibdir='$(libdir)' 1942 fi 1943 glibcpp_toolexeclibdir=$glibcpp_toolexeclibdir/`$CC -print-multi-os-directory` 1944fi 1945 1946AC_MSG_CHECKING([for install location]) 1947AC_MSG_RESULT($gxx_include_dir) 1948 1949AC_SUBST(glibcpp_prefixdir) 1950AC_SUBST(gxx_include_dir) 1951AC_SUBST(glibcpp_toolexecdir) 1952AC_SUBST(glibcpp_toolexeclibdir) 1953]) 1954 1955 1956# Check for functions in math library. 1957# Ulrich Drepper <drepper@cygnus.com>, 1998. 1958# 1959# This file can be copied and used freely without restrictions. It can 1960# be used in projects which are not available under the GNU Public License 1961# but which still want to provide support for the GNU gettext functionality. 1962# Please note that the actual code is *not* freely available. 1963 1964# serial 1 1965 1966dnl AC_REPLACE_MATHFUNCS(FUNCTION...) 1967AC_DEFUN(AC_REPLACE_MATHFUNCS, 1968[AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])]) 1969 1970 1971dnl This macro searches for a GNU version of make. If a match is found, the 1972dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is 1973dnl set to "#". This is useful for including a special features in a Makefile, 1974dnl which cannot be handled by other versions of make. The variable 1975dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists, 1976dnl the empty string otherwise. 1977dnl 1978dnl Here is an example of its use: 1979dnl 1980dnl Makefile.in might contain: 1981dnl 1982dnl # A failsafe way of putting a dependency rule into a makefile 1983dnl $(DEPEND): 1984dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND) 1985dnl 1986dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND))) 1987dnl @ifGNUmake@ include $(DEPEND) 1988dnl @ifGNUmake@ endif 1989dnl 1990dnl Then configure.in would normally contain: 1991dnl 1992dnl CHECK_GNU_MAKE() 1993dnl AC_OUTPUT(Makefile) 1994dnl 1995dnl Then perhaps to cause gnu make to override any other make, we could do 1996dnl something like this (note that GNU make always looks for GNUmakefile first): 1997dnl 1998dnl if ! test x$_cv_gnu_make_command = x ; then 1999dnl mv Makefile GNUmakefile 2000dnl echo .DEFAULT: > Makefile ; 2001dnl echo \ $_cv_gnu_make_command \$@ >> Makefile; 2002dnl fi 2003dnl 2004dnl Then, if any (well almost any) other make is called, and GNU make also 2005dnl exists, then the other make wraps the GNU make. 2006dnl 2007dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au> 2008dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme 2009dnl 2010dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending 2011dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the 2012dnl #### conditional's subshell (" --version" is not a command), using a 2013dnl #### different option to grep(1). 2014dnl #### -pme 2015dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not 2016dnl #### ${MAKE:-make}). 2017dnl #### -msokolov 2018AC_DEFUN( 2019 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command, 2020 _cv_gnu_make_command='' ; 2021dnl Search all the common names for GNU make 2022 for a in "${MAKE-make}" make gmake gnumake ; do 2023 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null ) 2024 then 2025 _cv_gnu_make_command=$a ; 2026 break; 2027 fi 2028 done ; 2029 ) ; 2030dnl If there was a GNU version, then set @ifGNUmake@ to the empty 2031dnl string, '#' otherwise 2032 if test "x$_cv_gnu_make_command" != "x" ; then 2033 ifGNUmake='' ; 2034 else 2035 ifGNUmake='#' ; 2036 fi 2037 AC_SUBST(ifGNUmake) 2038]) 2039 2040 2041dnl Check for headers for, and arguments to, the setrlimit() function. 2042dnl Used only in testsuite_hooks.h. 2043AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [ 2044 AC_TRY_COMPILE([#include <sys/resource.h> 2045 #include <unistd.h> 2046 ], [ int f = RLIMIT_$1 ; ], 2047 [glibcpp_mresult=1], [glibcpp_mresult=0]) 2048 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult, 2049 [Only used in build directory testsuite_hooks.h.]) 2050]) 2051AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [ 2052 setrlimit_have_headers=yes 2053 AC_CHECK_HEADERS(sys/resource.h unistd.h, 2054 [], 2055 setrlimit_have_headers=no) 2056 # If don't have the headers, then we can't run the tests now, and we 2057 # won't be seeing any of these during testsuite compilation. 2058 if test $setrlimit_have_headers = yes; then 2059 # Can't do these in a loop, else the resulting syntax is wrong. 2060 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA) 2061 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS) 2062 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM) 2063 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS) 2064 2065 # Check for rlimit, setrlimit. 2066 AC_CACHE_VAL(ac_setrlimit, [ 2067 AC_TRY_COMPILE([#include <sys/resource.h> 2068 #include <unistd.h> 2069 ], 2070 [ struct rlimit r; setrlimit(0, &r);], 2071 [ac_setrlimit=yes], [ac_setrlimit=no]) 2072 ]) 2073 fi 2074 2075 AC_MSG_CHECKING([for testsuite memory limit support]) 2076 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then 2077 ac_mem_limits=yes 2078 AC_DEFINE(_GLIBCPP_MEM_LIMITS) 2079 else 2080 ac_mem_limits=no 2081 fi 2082 AC_MSG_RESULT($ac_mem_limits) 2083]) 2084 2085 2086dnl 2087dnl Does any necessary configuration of the testsuite directory. Generates 2088dnl the testsuite_hooks.h header. 2089dnl 2090dnl GLIBCPP_CONFIGURE_TESTSUITE [no args] 2091AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [ 2092 GLIBCPP_CHECK_SETRLIMIT 2093 2094 # Look for setenv, so that extended locale tests can be performed. 2095 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv) 2096 2097 # Export file names for ABI checking. 2098 baseline_file="${glibcpp_srcdir}/config/abi/${abi_baseline_triplet}/baseline_symbols.txt" 2099 AC_SUBST(baseline_file) 2100 2101 # Don't do ABI checking unless native. 2102 AM_CONDITIONAL(GLIBCPP_BUILD_ABI_CHECK, 2103 test x"$build" = x"$host" && test -z "$with_cross_host") 2104]) 2105 2106 2107sinclude(../libtool.m4) 2108dnl The lines below arrange for aclocal not to bring an installed 2109dnl libtool.m4 into aclocal.m4, while still arranging for automake to 2110dnl add a definition of LIBTOOL to Makefile.in. 2111ifelse(,,,[AC_SUBST(LIBTOOL) 2112AC_DEFUN([AM_PROG_LIBTOOL]) 2113AC_DEFUN([AC_LIBTOOL_DLOPEN]) 2114AC_DEFUN([AC_PROG_LD]) 2115]) 2116 2117 2118# Check whether LC_MESSAGES is available in <locale.h>. 2119# Ulrich Drepper <drepper@cygnus.com>, 1995. 2120# 2121# This file file be copied and used freely without restrictions. It can 2122# be used in projects which are not available under the GNU Public License 2123# but which still want to provide support for the GNU gettext functionality. 2124# Please note that the actual code is *not* freely available. 2125 2126# serial 1 2127 2128AC_DEFUN(AC_LC_MESSAGES, [ 2129 AC_CHECK_HEADER(locale.h, [ 2130 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES, 2131 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES], 2132 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)]) 2133 if test $ac_cv_val_LC_MESSAGES = yes; then 2134 AC_DEFINE(HAVE_LC_MESSAGES) 2135 fi 2136 ]) 2137]) 2138 2139 2140dnl 2141dnl Check for whether the Boost-derived checks should be turned on. 2142dnl 2143dnl GLIBCPP_ENABLE_CONCEPT_CHECKS 2144dnl --enable-concept-checks turns them on. 2145dnl --disable-concept-checks leaves them off. 2146dnl + Usage: GLIBCPP_ENABLE_CONCEPT_CHECKS[(DEFAULT)] 2147dnl Where DEFAULT is either `yes' or `no'. If ommitted, it 2148dnl defaults to `no'. 2149AC_DEFUN(GLIBCPP_ENABLE_CONCEPT_CHECKS, [dnl 2150define([GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl 2151AC_ARG_ENABLE(concept-checks, 2152changequote(<<, >>)dnl 2153<< --enable-concept-checks use Boost-derived template checks [default=>>GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], 2154changequote([, ])dnl 2155[case "$enableval" in 2156 yes) enable_concept_checks=yes ;; 2157 no) enable_concept_checks=no ;; 2158 *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;; 2159 esac], 2160enable_concept_checks=GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl 2161dnl Option parsed, now set things appropriately 2162if test x"$enable_concept_checks" = xyes; then 2163 AC_DEFINE(_GLIBCPP_CONCEPT_CHECKS) 2164fi 2165]) 2166 2167 2168dnl 2169dnl Add version tags to symbols in shared library (or not), additionally 2170dnl marking other symbols as private/local (or not). 2171dnl 2172dnl GLIBCPP_ENABLE_SYMVERS 2173dnl --enable-symvers=style adds a version script to the linker call when 2174dnl creating the shared library. The choice of version script is 2175dnl controlled by 'style'. 2176dnl --disable-symvers does not. 2177dnl + Usage: GLIBCPP_ENABLE_SYMVERS[(DEFAULT)] 2178dnl Where DEFAULT is either `yes' or `no'. If ommitted, it 2179dnl defaults to `no'. Passing `yes' tries to choose a default style 2180dnl based on linker characteristics. Passing 'no' disables versioning. 2181AC_DEFUN(GLIBCPP_ENABLE_SYMVERS, [dnl 2182define([GLIBCPP_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl 2183AC_ARG_ENABLE(symvers, 2184changequote(<<, >>)dnl 2185<< --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCPP_ENABLE_SYMVERS_DEFAULT], 2186changequote([, ])dnl 2187[case "$enableval" in 2188 yes) enable_symvers=yes ;; 2189 no) enable_symvers=no ;; 2190 # other names here, just as sanity checks 2191 #gnu|sun|etcetera) enable_symvers=$enableval ;; 2192 gnu) enable_symvers=$enableval ;; 2193 *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;; 2194 esac], 2195enable_symvers=GLIBCPP_ENABLE_SYMVERS_DEFAULT)dnl 2196 2197# If we never went through the GLIBCPP_CHECK_LINKER_FEATURES macro, then we 2198# don't know enough about $LD to do tricks... 2199if test x$enable_shared = xno || 2200 test "x$LD" = x || 2201 test x$glibcpp_gnu_ld_version = x; then 2202 enable_symvers=no 2203fi 2204 2205# Check to see if libgcc_s exists, indicating that shared libgcc is possible. 2206AC_MSG_CHECKING([for shared libgcc]) 2207ac_save_CFLAGS="$CFLAGS" 2208CFLAGS=' -lgcc_s' 2209AC_TRY_LINK( , [return 0], glibcpp_shared_libgcc=yes, glibcpp_shared_libgcc=no) 2210CFLAGS="$ac_save_CFLAGS" 2211AC_MSG_RESULT($glibcpp_shared_libgcc) 2212 2213# For GNU ld, we need at least this version. It's 2.12 in the same format 2214# as the tested-for version. See GLIBCPP_CHECK_LINKER_FEATURES for more. 2215glibcpp_min_gnu_ld_version=21200 2216 2217# Check to see if unspecified "yes" value can win, given results 2218# above. 2219if test $enable_symvers = yes ; then 2220 if test $with_gnu_ld = yes && 2221 test $glibcpp_shared_libgcc = yes ; 2222 then 2223 if test $glibcpp_gnu_ld_version -ge $glibcpp_min_gnu_ld_version ; then 2224 enable_symvers=gnu 2225 else 2226 ac_test_CFLAGS="${CFLAGS+set}" 2227 ac_save_CFLAGS="$CFLAGS" 2228 CFLAGS='-shared -Wl,--version-script,conftest.map' 2229 enable_symvers=no 2230 changequote(,) 2231 echo 'FOO { global: f[a-z]o; local: *; };' > conftest.map 2232 changequote([,]) 2233 AC_TRY_LINK([int foo;],, enable_symvers=gnu) 2234 if test "$ac_test_CFLAGS" = set; then 2235 CFLAGS="$ac_save_CFLAGS" 2236 else 2237 # this is the suspicious part 2238 CFLAGS='' 2239 fi 2240 rm -f conftest.map 2241 fi 2242 else 2243 # just fail for now 2244 enable_symvers=no 2245 fi 2246fi 2247 2248dnl Everything parsed; figure out what file to use. 2249case $enable_symvers in 2250 no) 2251 LINKER_MAP=config/linker-map.dummy 2252 ;; 2253 gnu) 2254 LINKER_MAP=config/linker-map.gnu 2255 AC_DEFINE(_GLIBCPP_SYMVER) 2256 ;; 2257esac 2258 2259AC_LINK_FILES($LINKER_MAP, src/linker.map) 2260AM_CONDITIONAL(GLIBCPP_BUILD_VERSIONED_SHLIB, test $enable_symvers != no) 2261AC_MSG_CHECKING([versioning on shared library symbols]) 2262AC_MSG_RESULT($enable_symvers) 2263]) 2264 2265