2 dnl Initialize configure bits.
5 AC_DEFUN(GLIBCPP_CONFIGURE, [
6 dnl Default to --enable-multilib
7 AC_ARG_ENABLE(multilib,
8 [ --enable-multilib build hella library versions (default)],
9 [case "${enableval}" in
12 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
13 esac], [multilib=yes])dnl
15 # When building with srcdir == objdir, links to the source files will
16 # be created in directories within the target_subdir. We have to
17 # adjust toplevel_srcdir accordingly, so that configure finds
18 # install-sh and other auxiliary files that live in the top-level
20 if test "${srcdir}" = "."; then
21 if test -z "${with_target_subdir}"; then
24 if test "${with_target_subdir}" != "."; then
25 toprel="${with_multisrctop}../.."
27 toprel="${with_multisrctop}.."
33 AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
34 toplevel_srcdir=\${top_srcdir}/$toprel
35 AC_SUBST(toplevel_srcdir)
37 # Export build and source directories.
38 # These need to be absolute paths, yet at the same time need to
39 # canonicalize only relative paths, because then amd will not unmount
40 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
41 glibcpp_builddir=`pwd`
43 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
44 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
46 AC_SUBST(glibcpp_builddir)
47 AC_SUBST(glibcpp_srcdir)
49 dnl This is here just to satisfy automake.
50 ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
52 # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.50+, can also
53 # be 'cp -p' if linking isn't available.
54 #ac_cv_prog_LN_S='cp -p'
57 # We use these options to decide which functions to include.
58 AC_ARG_WITH(target-subdir,
59 [ --with-target-subdir=SUBDIR
60 configuring in a subdirectory])
61 AC_ARG_WITH(cross-host,
62 [ --with-cross-host=HOST configuring with a cross compiler])
64 glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
65 AC_SUBST(glibcpp_basedir)
67 # Never versions of autoconf add an underscore to these functions.
68 # Prevent future problems ...
69 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
70 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
71 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
72 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
76 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
77 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
78 # are probably using a cross compiler, which will not be able to fully
79 # link an executable. This should really be fixed in autoconf
82 AC_DEFUN(LIB_AC_PROG_CC,
83 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
84 dnl Fool anybody using AC_PROG_CC.
85 AC_PROVIDE([AC_PROG_CC])
86 AC_CHECK_PROG(CC, gcc, gcc)
87 if test -z "$CC"; then
88 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
89 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
94 if test $ac_cv_prog_gcc = yes; then
96 dnl Check whether -g works, even if CFLAGS is set, in case the package
97 dnl plays around with CFLAGS (such as to build both debugging and
98 dnl normal versions of a library), tasteless as that idea is.
99 ac_test_CFLAGS="${CFLAGS+set}"
100 ac_save_CFLAGS="$CFLAGS"
103 if test "$ac_test_CFLAGS" = set; then
104 CFLAGS="$ac_save_CFLAGS"
105 elif test $ac_cv_prog_cc_g = yes; then
112 test "${CFLAGS+set}" = set || CFLAGS="-g"
118 # Can't just call these here as g++ requires libstc++ to be built....
121 # Likewise for AC_PROG_CXX.
122 AC_DEFUN(LIB_AC_PROG_CXX,
123 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
124 dnl Fool anybody using AC_PROG_CXX.
125 AC_PROVIDE([AC_PROG_CXX])
126 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
127 # flags that come in CXX while configuring libstdc++. They're different
128 # from those used for all other target libraries. If CXX is set in
129 # the environment, respect that here.
131 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
132 AC_SUBST(glibcpp_CXX)
134 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
138 if test $ac_cv_prog_gxx = yes; then
140 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
141 dnl plays around with CXXFLAGS (such as to build both debugging and
142 dnl normal versions of a library), tasteless as that idea is.
143 ac_test_CXXFLAGS="${CXXFLAGS+set}"
144 ac_save_CXXFLAGS="$CXXFLAGS"
147 if test "$ac_test_CXXFLAGS" = set; then
148 CXXFLAGS="$ac_save_CXXFLAGS"
149 elif test $ac_cv_prog_cxx_g = yes; then
156 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
162 # For some reason, gettext needs this.
165 AC_CHECK_TOOL(AS, as)
166 AC_CHECK_TOOL(AR, ar)
167 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
172 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
173 # at least currently, we never actually build a program, so we never
174 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
175 # fails, because we are probably configuring with a cross compiler
176 # which can't create executables. So we include AC_EXEEXT to keep
177 # automake happy, but we don't execute it, since we don't care about
180 # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
181 # to nothing, so nothing would remain between `then' and `fi' if it
182 # were not for the `:' below.
187 . [$]{glibcpp_basedir}/configure.host
189 case [$]{glibcpp_basedir} in
190 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
191 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
194 # This does for the target what configure.host does for the host. In
195 # addition to possibly modifying the same flags, it also sets up symlinks.
203 dnl Check to see if g++ can compile this library, and if so, if any version-
204 dnl specific precautions need to be taken.
206 dnl GLIBCPP_CHECK_COMPILER_VERSION
207 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
208 if test ! -f stamp-sanity-compiler; then
209 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
216 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
218 AC_MSG_RESULT($gpp_satisfactory)
219 touch stamp-sanity-compiler
225 dnl Tests for newer compiler features, or features that are present in newer
226 dnl compiler versions but not older compiler versions still in use, should
229 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
230 dnl new inlining code or the new system_header pragma will die on -Werror.
231 dnl Leave it out by default and use maint-mode to use it.
233 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
234 dnl compiler supports it and the user has not requested debug mode.
236 dnl GLIBCPP_CHECK_COMPILER_FEATURES
237 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
238 # All these tests are for C++; save the language and the compiler flags.
239 # The CXXFLAGS thing is suspicious, but based on similar bits previously
240 # found in GLIBCPP_CONFIGURE.
243 ac_test_CXXFLAGS="${CXXFLAGS+set}"
244 ac_save_CXXFLAGS="$CXXFLAGS"
246 # Check for maintainer-mode bits.
247 if test x"$USE_MAINTAINER_MODE" = xno; then
253 # Check for -ffunction-sections -fdata-sections
254 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
255 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
256 AC_TRY_COMPILE(, [int foo;
257 ], [ac_fdsections=yes], [ac_fdsections=no])
258 if test "$ac_test_CXXFLAGS" = set; then
259 CXXFLAGS="$ac_save_CXXFLAGS"
261 # this is the suspicious part
264 if test x"$ac_fdsections" = x"yes" &&
265 test x"$enable_debug" = x"no"; then
266 SECTION_FLAGS='-ffunction-sections -fdata-sections'
268 AC_MSG_RESULT($ac_fdsections)
272 AC_SUBST(SECTION_FLAGS)
277 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
278 dnl the native linker is in use, all variables will be defined to something
279 dnl safe (like an empty string).
281 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
282 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
284 dnl GLIBCPP_CHECK_LINKER_FEATURES
285 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
286 # If we're not using GNU ld, then there's no point in even trying these
287 # tests. Check for that first. We should have already tested for gld
288 # by now (in libtool), but require it now just to be safe...
291 AC_REQUIRE([AC_PROG_LD])
294 if test "$ac_cv_prog_gnu_ld" = "notbroken"; then
295 # GNU ld it is! Joy and bunny rabbits!
297 # All these tests are for C++; save the language and the compiler flags.
298 # Need to do this so that g++ won't try to link in libstdc++
299 ac_test_CFLAGS="${CFLAGS+set}"
300 ac_save_CFLAGS="$CFLAGS"
301 CFLAGS='-x c++ -Wl,--gc-sections'
303 # Check for -Wl,--gc-sections
304 # XXX This test is broken at the moment, as symbols required for
305 # linking are now in libsupc++ (not built yet.....). In addition,
306 # this test has cored on solaris in the past. In addition,
307 # --gc-sections doesn't really work at the moment (keeps on discarding
308 # used sections, first .eh_frame and now some of the glibc sections for
309 # iconv). Bzzzzt. Thanks for playing, maybe next time.
310 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
318 ], [ac_sectionLDflags=yes],[ac_sectionLFflags=no], [ac_sectionLDflags=yes])
319 if test "$ac_test_CFLAGS" = set; then
320 CFLAGS="$ac_save_CFLAGS"
322 # this is the suspicious part
325 if test "$ac_sectionLDflags" = "yes"; then
326 SECTION_LDFLAGS='-Wl,--gc-sections'
328 AC_MSG_RESULT($ac_sectionLDflags)
331 # Set linker optimization flags.
332 if test x"$ac_cv_prog_gnu_ld" = x"yes" &&
333 test x"$enable_debug" = x"no"; then
334 OPT_LDFLAGS='-Wl,-O1'
337 AC_SUBST(SECTION_LDFLAGS)
338 AC_SUBST(OPT_LDFLAGS)
343 dnl Check to see if the (math function) argument passed is
344 dnl declared when using the c++ compiler
345 dnl ASSUMES argument is a math function with ONE parameter
347 dnl GLIBCPP_CHECK_MATH_DECL_1
348 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
349 AC_MSG_CHECKING([for $1 declaration])
350 if test x${glibcpp_cv_func_$1_use+set} != xset; then
351 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
354 AC_TRY_COMPILE([#include <math.h>
360 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
364 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
368 dnl Check to see if the (math function) argument passed is
369 dnl 1) declared when using the c++ compiler
370 dnl 2) has "C" linkage
371 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
373 dnl Define HAVE_CARGF etc if "cargf" is declared and links
375 dnl argument 1 is name of function to check
377 dnl ASSUMES argument is a math function with ONE parameter
379 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
380 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
381 GLIBCPP_CHECK_MATH_DECL_1($1)
382 if test x$glibcpp_cv_func_$1_use = x"yes"; then
385 GLIBCPP_CHECK_MATH_DECL_1(_$1)
386 if test x$glibcpp_cv_func__$1_use = x"yes"; then
394 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
395 dnl of functions at once. It's an all-or-nothing check -- either
396 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
397 dnl Doing it this way saves significant configure time.
398 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
399 AC_MSG_CHECKING([for $1 functions])
400 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
403 AC_TRY_COMPILE([#include <math.h>],
404 [ `for x in $3; do echo "$x (0);"; done` ],
405 [glibcpp_cv_func_$2_use=yes],
406 [glibcpp_cv_func_$2_use=no])
408 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
409 if test x$glibcpp_cv_func_$2_use = x"yes"; then
415 dnl Check to see if the (math function) argument passed is
416 dnl declared when using the c++ compiler
417 dnl ASSUMES argument is a math function with TWO parameters
419 dnl GLIBCPP_CHECK_MATH_DECL_2
420 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
421 AC_MSG_CHECKING([for $1 declaration])
422 if test x${glibcpp_cv_func_$1_use+set} != xset; then
423 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
426 AC_TRY_COMPILE([#include <math.h>],
428 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
432 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
436 dnl Check to see if the (math function) argument passed is
437 dnl 1) declared when using the c++ compiler
438 dnl 2) has "C" linkage
440 dnl Define HAVE_CARGF etc if "cargf" is declared and links
442 dnl argument 1 is name of function to check
444 dnl ASSUMES argument is a math function with TWO parameters
446 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
447 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
448 GLIBCPP_CHECK_MATH_DECL_2($1)
449 if test x$glibcpp_cv_func_$1_use = x"yes"; then
452 GLIBCPP_CHECK_MATH_DECL_2(_$1)
453 if test x$glibcpp_cv_func__$1_use = x"yes"; then
461 dnl Check to see if the (math function) argument passed is
462 dnl declared when using the c++ compiler
463 dnl ASSUMES argument is a math function with THREE parameters
465 dnl GLIBCPP_CHECK_MATH_DECL_3
466 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
467 AC_MSG_CHECKING([for $1 declaration])
468 if test x${glibcpp_cv_func_$1_use+set} != xset; then
469 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
472 AC_TRY_COMPILE([#include <math.h>],
474 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
478 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
482 dnl Check to see if the (math function) argument passed is
483 dnl 1) declared when using the c++ compiler
484 dnl 2) has "C" linkage
486 dnl Define HAVE_CARGF etc if "cargf" is declared and links
488 dnl argument 1 is name of function to check
490 dnl ASSUMES argument is a math function with THREE parameters
492 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
493 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
494 GLIBCPP_CHECK_MATH_DECL_3($1)
495 if test x$glibcpp_cv_func_$1_use = x"yes"; then
498 GLIBCPP_CHECK_MATH_DECL_3(_$1)
499 if test x$glibcpp_cv_func__$1_use = x"yes"; then
507 dnl Check to see if the (stdlib function) argument passed is
508 dnl 1) declared when using the c++ compiler
509 dnl 2) has "C" linkage
511 dnl argument 1 is name of function to check
513 dnl ASSUMES argument is a math function with TWO parameters
515 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
516 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
517 AC_MSG_CHECKING([for $1 declaration])
518 if test x${glibcpp_cv_func_$1_use+set} != xset; then
519 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
522 AC_TRY_COMPILE([#include <stdlib.h>],
524 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
528 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
529 if test x$glibcpp_cv_func_$1_use = x"yes"; then
536 dnl Because the builtins are picky picky picky about the arguments they take,
537 dnl do an explict linkage tests here.
538 dnl Check to see if the (math function) argument passed is
539 dnl 1) declared when using the c++ compiler
540 dnl 2) has "C" linkage
542 dnl Define HAVE_CARGF etc if "cargf" is declared and links
544 dnl argument 1 is name of function to check
546 dnl ASSUMES argument is a math function with ONE parameter
548 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
549 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
550 AC_MSG_CHECKING([for $1 declaration])
551 if test x${glibcpp_cv_func_$1_use+set} != xset; then
552 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
555 AC_TRY_COMPILE([#include <math.h>],
557 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
561 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
562 if test x$glibcpp_cv_func_$1_use = x"yes"; then
563 AC_MSG_CHECKING([for $1 linkage])
564 if test x${glibcpp_cv_func_$1_link+set} != xset; then
565 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
566 AC_TRY_LINK([#include <math.h>],
568 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
571 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
572 if test x$glibcpp_cv_func_$1_link = x"yes"; then
573 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
574 AC_DEFINE_UNQUOTED(${ac_tr_func})
581 dnl Check to see what builtin math functions are supported
583 dnl check for __builtin_abs
584 dnl check for __builtin_fabsf
585 dnl check for __builtin_fabs
586 dnl check for __builtin_fabl
587 dnl check for __builtin_labs
588 dnl check for __builtin_sqrtf
589 dnl check for __builtin_sqrtl
590 dnl check for __builtin_sqrt
591 dnl check for __builtin_sinf
592 dnl check for __builtin_sin
593 dnl check for __builtin_sinl
594 dnl check for __builtin_cosf
595 dnl check for __builtin_cos
596 dnl check for __builtin_cosl
598 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
599 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
600 dnl Test for builtin math functions.
601 dnl These are made in gcc/c-common.c
602 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
603 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
604 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
605 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
606 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
608 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
609 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
610 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
612 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
613 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
614 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
616 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
617 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
618 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
620 dnl There is, without a doubt, a more elegant way to have these
621 dnl names exported so that they won't be stripped out of acconfig.h by
622 dnl autoheader. I leave this as an exercise to somebody less frustrated
623 dnl than I.... please email the libstdc++ list if you can figure out a
624 dnl more elegant approach (see autoconf/acgen.m4 and specifically
625 dnl AC_CHECK_FUNC for things to steal.)
627 if test x$dummyvar = x"yes"; then
628 AC_DEFINE(HAVE___BUILTIN_ABS)
629 AC_DEFINE(HAVE___BUILTIN_LABS)
630 AC_DEFINE(HAVE___BUILTIN_COS)
631 AC_DEFINE(HAVE___BUILTIN_COSF)
632 AC_DEFINE(HAVE___BUILTIN_COSL)
633 AC_DEFINE(HAVE___BUILTIN_FABS)
634 AC_DEFINE(HAVE___BUILTIN_FABSF)
635 AC_DEFINE(HAVE___BUILTIN_FABSL)
636 AC_DEFINE(HAVE___BUILTIN_SIN)
637 AC_DEFINE(HAVE___BUILTIN_SINF)
638 AC_DEFINE(HAVE___BUILTIN_SINL)
639 AC_DEFINE(HAVE___BUILTIN_SQRT)
640 AC_DEFINE(HAVE___BUILTIN_SQRTF)
641 AC_DEFINE(HAVE___BUILTIN_SQRTL)
647 dnl Check to see what the underlying c library
648 dnl These checks need to do two things:
649 dnl 1) make sure the name is declared when using the c++ compiler
650 dnl 2) make sure the name has "C" linkage
651 dnl This might seem like overkill but experience has shown that it's not...
653 dnl Define HAVE_STRTOLD if "strtold" is declared and links
654 dnl Define HAVE_STRTOF if "strtof" is declared and links
655 dnl Define HAVE_DRAND48 if "drand48" is declared and links
657 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
658 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
659 ac_test_CXXFLAGS="${CXXFLAGS+set}"
660 ac_save_CXXFLAGS="$CXXFLAGS"
661 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
663 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
664 AC_CHECK_FUNCS(drand48)
666 CXXFLAGS="$ac_save_CXXFLAGS"
671 dnl Check to see what the underlying c library or math library is like.
672 dnl These checks need to do two things:
673 dnl 1) make sure the name is declared when using the c++ compiler
674 dnl 2) make sure the name has "C" linkage
675 dnl This might seem like overkill but experience has shown that it's not...
677 dnl Define HAVE_CARGF etc if "cargf" is found.
679 dnl GLIBCPP_CHECK_MATH_SUPPORT
680 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
681 ac_test_CXXFLAGS="${CXXFLAGS+set}"
682 ac_save_CXXFLAGS="$CXXFLAGS"
683 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
686 AC_CHECK_LIB(m, sin, libm="-lm")
690 dnl Check to see if certain C math functions exist.
691 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
692 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
693 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
694 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
695 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
696 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
697 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
698 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
700 dnl Check to see if basic C math functions have float versions.
701 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
706 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
709 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
710 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
711 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
712 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
713 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
714 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
715 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
716 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
717 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
718 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
719 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
720 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
721 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
722 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
723 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
725 dnl Check to see if basic C math functions have long double versions.
726 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
731 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
734 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
735 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
736 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
737 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
738 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
739 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
740 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
741 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
742 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
743 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
744 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
745 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
746 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
747 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
748 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
749 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
750 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
752 dnl Some runtimes have these functions with a preceding underscore. Please
753 dnl keep this sync'd with the one above. And if you add any new symbol,
754 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
755 dnl Check to see if certain C math functions exist.
757 dnl Check to see if basic C math functions have float versions.
758 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
760 _acosf _asinf _atanf \
762 _coshf _sinhf _tanhf)
763 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
767 dnl Check to see if basic C math functions have long double versions.
768 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
770 _acosl _asinl _atanl \
772 _coshl _sinhl _tanhl)
773 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
778 CXXFLAGS="$ac_save_CXXFLAGS"
783 dnl Check to see if there is native support for complex
785 dnl Don't compile bits in math/* if native support exits.
787 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
789 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
790 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
791 dnl Check for complex versions of math functions of platform.
792 AC_CHECK_LIB(m, main)
793 AC_REPLACE_MATHFUNCS(nan copysignf)
795 dnl Compile the long double complex functions only if the function
796 dnl provides the non-complex long double functions that are needed.
797 dnl Currently this includes copysignl, which should be
798 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
799 USE_COMPLEX_LONG_DOUBLE=no
800 if test x$ac_cv_func_copysignl = x"yes"; then
801 USE_COMPLEX_LONG_DOUBLE=yes
802 AC_REPLACE_MATHFUNCS(signbitl)
805 AC_SUBST(USE_COMPLEX_LONG_DOUBLE)
809 dnl Check to see what architecture and operating system we are compiling
810 dnl for. Also, if architecture- or OS-specific flags are required for
811 dnl compilation, pick them up here.
813 dnl GLIBCPP_CHECK_TARGET
814 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
815 . [$]{glibcpp_basedir}/configure.target
816 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
817 AC_MSG_RESULT(OS config directory is $os_include_dir)
822 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
823 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
824 dnl must have been previously checked.)
826 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
827 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
829 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
830 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
832 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
833 dnl others even if wchar_t support is not on.
834 AC_MSG_CHECKING([for mbstate_t])
835 AC_TRY_COMPILE([#include <wchar.h>],
836 [mbstate_t teststate;],
837 have_mbstate_t=yes, have_mbstate_t=no)
838 AC_MSG_RESULT($have_mbstate_t)
839 if test x"$have_mbstate_t" = xyes; then
840 AC_DEFINE(HAVE_MBSTATE_T)
843 dnl Sanity check for existence of ISO C99 headers for extended encoding.
844 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
845 AC_CHECK_HEADER(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
847 dnl Only continue checking if the ISO C99 headers exist and support is on.
848 if test x"$ac_has_wchar_h" = xyes &&
849 test x"$ac_has_wctype_h" = xyes &&
850 test x"$enable_c_mbchar" != xno; then
852 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
853 dnl numeric_limits can instantiate type_traits<wchar_t>
854 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
855 AC_TRY_COMPILE([#include <wchar.h>],
856 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
857 has_wchar_minmax=yes, has_wchar_minmax=no)
858 AC_MSG_RESULT($has_wchar_minmax)
860 dnl Test wchar.h for WEOF, which is what we use to determine whether
861 dnl to specialize for char_traits<wchar_t> or not.
862 AC_MSG_CHECKING([for WEOF])
865 #include <stddef.h>],
867 has_weof=yes, has_weof=no)
868 AC_MSG_RESULT($has_weof)
870 dnl Tests for wide character functions used in char_traits<wchar_t>.
872 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
875 dnl Checks for names injected into std:: by the c_std headers.
876 AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
877 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
878 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
879 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
880 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
881 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
884 AC_MSG_CHECKING([for ISO C99 wchar_t support])
885 if test x"$has_weof" = xyes &&
886 test x"$has_wchar_minmax" = xyes &&
887 test x"$ac_wfuncs" = xyes; then
888 ac_isoC99_wchar_t=yes
892 AC_MSG_RESULT($ac_isoC99_wchar_t)
894 dnl Use iconv for wchar_t to char conversions. As such, check for
895 dnl X/Open Portability Guide, version 2 features (XPG2).
896 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
897 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
899 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
900 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
902 LIBS="$LIBS $libiconv"
904 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
905 ac_XPG2funcs=yes, ac_XPG2funcs=no)
909 AC_MSG_CHECKING([for XPG2 wchar_t support])
910 if test x"$ac_has_iconv_h" = xyes &&
911 test x"$ac_has_langinfo_h" = xyes &&
912 test x"$ac_XPG2funcs" = xyes; then
917 AC_MSG_RESULT($ac_XPG2_wchar_t)
919 dnl At the moment, only enable wchar_t specializations if all the
920 dnl above support is present.
921 AC_MSG_CHECKING([for enabled wchar_t specializations])
922 if test x"$ac_isoC99_wchar_t" = xyes &&
923 test x"$ac_XPG2_wchar_t" = xyes; then
924 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
930 dnl Wide characters disabled by the user.
931 AC_MSG_WARN([wchar_t support disabled.])
937 dnl Check for special debugging mode; not for production use.
939 dnl GLIBCPP_ENABLE_DEBUG
940 dnl --enable-debug sets '-ggdb3 -O0'.
941 dnl --disable-debug sets '-g' and whatever optimization options the
942 dnl compiler can handle.
943 dnl + --enable-maintainer-mode automatically defaults this to on.
944 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
945 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
946 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
947 dnl defaults to `no'.
948 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
949 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
951 changequote(<<, >>)dnl
952 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
954 [case "${enableval}" in
955 yes) enable_debug=yes ;;
956 no) enable_debug=no ;;
957 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
959 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
961 dnl Option parsed, now set things appropriately
962 case "${enable_debug}" in
964 DEBUG_FLAGS='-O0 -ggdb3'
970 AC_SUBST(DEBUG_FLAGS)
975 dnl Check for "unusual" flags to pass to the compiler while building.
977 dnl GLIBCPP_ENABLE_CXX_FLAGS
978 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
979 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
980 dnl Somehow this same set of flags must be passed when [re]building
982 dnl --disable-cxx-flags passes nothing.
983 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
984 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
985 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
986 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
987 dnl If "default flags" is an empty string (or "none"), the effect is
988 dnl the same as --disable or --enable=no.
989 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
990 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
991 AC_ARG_ENABLE(cxx-flags,
992 changequote(<<, >>)dnl
993 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
994 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
996 [case "x$enableval" in
998 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1000 enable_cxx_flags='' ;;
1002 enable_cxx_flags="$enableval" ;;
1004 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1006 dnl Thinko on my part during design. This kludge is the workaround.
1007 if test "$enable_cxx_flags" = "none"; then
1008 enable_cxx_flags='';
1011 dnl Run through flags (either default or command-line) and set anything
1012 dnl extra (e.g., #defines) that must accompany particular g++ options.
1013 if test -n "$enable_cxx_flags"; then
1014 for f in $enable_cxx_flags; do
1018 *) # and we're trying to pass /what/ exactly?
1019 AC_MSG_ERROR([compiler flags start with a -]) ;;
1023 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1024 AC_SUBST(EXTRA_CXX_FLAGS)
1029 dnl Check for which locale library to use: gnu or generic.
1031 dnl GLIBCPP_ENABLE_CLOCALE
1032 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1033 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1035 dnl default is generic
1037 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1038 AC_MSG_CHECKING([for clocale to use])
1039 AC_ARG_ENABLE(clocale,
1040 [ --enable-clocale enable model for target locale package.
1041 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1043 if test x$enable_clocale = xno; then
1044 enable_clocale=generic
1046 enable_clocale=generic)
1048 enable_clocale_flag=$enable_clocale
1050 dnl Check if a valid locale package
1051 case x${enable_clocale_flag} in
1053 AC_MSG_RESULT(generic)
1055 # Don't use gettext.
1058 CLOCALE_H=config/locale/c_locale_generic.h
1059 CLOCALE_CC=config/locale/c_locale_generic.cc
1060 CCODECVT_H=config/locale/codecvt_specializations_generic.h
1061 CCOLLATE_CC=config/locale/collate_members_generic.cc
1062 CMESSAGES_H=config/locale/messages_members_generic.h
1063 CMESSAGES_CC=config/locale/messages_members_generic.cc
1064 CMONEY_CC=config/locale/moneypunct_members_generic.cc
1065 CNUMERIC_CC=config/locale/numpunct_members_generic.cc
1066 CTIME_CC=config/locale/time_members_generic.cc
1071 # Declare intention to use gettext, and add support for specific
1073 # For some reason, ALL_LINGUAS has to be before AM_GNU_GETTEXT
1075 # Don't call AM_GNU_GETTEXT here. Instead, assume glibc.
1076 # Need to deal with MSGFMT, USE_NLS, and glibcpp_[P,M]OFILES
1079 # Export the build objects.
1080 for ling in $ALL_LINGUAS; do \
1081 glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1082 glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1084 AC_SUBST(glibcpp_MOFILES)
1085 AC_SUBST(glibcpp_POFILES)
1087 CLOCALE_H=config/locale/c_locale_gnu.h
1088 CLOCALE_CC=config/locale/c_locale_gnu.cc
1089 CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
1090 CCOLLATE_CC=config/locale/collate_members_gnu.cc
1091 CMESSAGES_H=config/locale/messages_members_gnu.h
1092 CMESSAGES_CC=config/locale/messages_members_gnu.cc
1093 CMONEY_CC=config/locale/moneypunct_members_gnu.cc
1094 CNUMERIC_CC=config/locale/numpunct_members_gnu.cc
1095 CTIME_CC=config/locale/time_members_gnu.cc
1098 AC_MSG_RESULT(generic)
1100 # Don't use gettext.
1103 CLOCALE_H=config/locale/c_locale_ieee_1003.1-200x.h
1104 CLOCALE_CC=config/locale/c_locale_ieee_1003.1-200x.cc
1105 CCODECVT_H=config/locale/codecvt_specializations_ieee_1003.1-200x.h
1106 CCOLLATE_CC=config/locale/collate_members_generic.cc
1107 CMESSAGES_H=config/locale/messages_members_ieee_1003.1-200x.h
1108 CMESSAGES_CC=config/locale/messages_members_ieee_1003.1-200x.cc
1109 CMONEY_CC=config/locale/moneypunct_members_generic.cc
1110 CNUMERIC_CC=config/locale/numpunct_members_generic.cc
1111 CTIME_CC=config/locale/time_members_generic.cc
1114 echo "$enable_clocale is an unknown locale package" 1>&2
1119 # This is where the testsuite looks for locale catalogs, using the
1120 # -DLOCALEDIR define during testsuite compilation.
1121 glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1122 AC_SUBST(glibcpp_localedir)
1126 AC_SUBST(CCODECVT_H)
1127 AC_SUBST(CMESSAGES_H)
1128 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1129 AC_LINK_FILES($CCOLLATE_CC, src/collate.cc)
1130 AC_LINK_FILES($CMESSAGES_CC, src/messages.cc)
1131 AC_LINK_FILES($CMONEY_CC, src/moneypunct.cc)
1132 AC_LINK_FILES($CNUMERIC_CC, src/numpunct.cc)
1133 AC_LINK_FILES($CTIME_CC, src/time.cc)
1138 dnl Check for which I/O library to use: libio, or something specific.
1140 dnl GLIBCPP_ENABLE_CSTDIO
1141 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1143 dnl default is stdio
1145 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1146 AC_MSG_CHECKING([for cstdio to use])
1147 AC_ARG_ENABLE(cstdio,
1148 [ --enable-cstdio enable stdio for target io package.
1149 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1151 if test x$enable_cstdio = xno; then
1154 enable_cstdio=stdio)
1156 enable_cstdio_flag=$enable_cstdio
1158 dnl Check if a valid I/O package
1159 case x${enable_cstdio_flag} in
1161 CSTDIO_H=config/io/c_io_libio.h
1162 BASIC_FILE_H=config/io/basic_file_libio.h
1163 BASIC_FILE_CC=config/io/basic_file_libio.cc
1164 AC_MSG_RESULT(libio)
1166 # see if we are on a system with libio native (ie, linux)
1167 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1169 # Need to check and see what version of glibc is being used. If
1170 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1171 # compile most of libio for linux systems.
1172 if test x$has_libio = x"yes"; then
1175 AC_MSG_CHECKING([for glibc version >= 2.2])
1176 AC_EGREP_CPP([ok], [
1177 #include <features.h>
1178 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1181 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1182 AC_MSG_RESULT($glibc_satisfactory)
1186 # XXX at the moment, admit defeat and force the recompilation
1187 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1188 glibc_satisfactory=no
1190 if test x$glibc_satisfactory = x"yes"; then
1195 # bkoz XXX need to add checks to enable this
1196 # pme XXX here's a first pass at such a check
1197 if test x$enable_c_mbchar != xno; then
1205 # Using libio, but <libio.h> doesn't exist on the target system. . .
1207 # bkoz XXX need to add checks to enable this
1208 # pme XXX here's a first pass at such a check
1209 if test x$enable_c_mbchar != xno; then
1216 xstdio | x | xno | xnone | xyes)
1218 CSTDIO_H=config/io/c_io_stdio.h
1219 BASIC_FILE_H=config/io/basic_file_stdio.h
1220 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1221 AC_MSG_RESULT(stdio)
1223 # We're not using stdio.
1228 echo "$enable_cstdio is an unknown io package" 1>&2
1233 AC_SUBST(BASIC_FILE_H)
1234 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1236 # 2000-08-04 bkoz hack
1237 CCODECVT_C=config/io/c_io_libio_codecvt.c
1238 AC_SUBST(CCODECVT_C)
1239 # 2000-08-04 bkoz hack
1241 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1242 test "$need_libio" = yes || test "$need_wlibio" = yes)
1243 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1244 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1245 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1246 libio_la=../libio/libio.la
1255 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1256 dnl We must stage the required headers so that they will be installed
1257 dnl with the library (unlike libgcc, the STL implementation is provided
1258 dnl solely within headers). Since we must not inject random user-space
1259 dnl macro names into user-provided C++ code, we first stage into <file>-in
1260 dnl and process to <file> with an output command. The reason for a two-
1261 dnl stage process here is to correctly handle $srcdir!=$objdir without
1262 dnl having to write complex code (the sed commands to clean the macro
1263 dnl namespace are complex and fragile enough as it is). We must also
1264 dnl add a relative path so that -I- is supported properly.
1266 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1267 AC_MSG_CHECKING([for thread model used by GCC])
1268 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1269 AC_MSG_RESULT([$target_thread_file])
1271 if test $target_thread_file != single; then
1272 AC_DEFINE(HAVE_GTHR_DEFAULT)
1273 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1276 glibcpp_thread_h=gthr-$target_thread_file.h
1277 AC_SUBST(glibcpp_thread_h)
1282 dnl Check for exception handling support. If an explicit enable/disable
1283 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1284 dnl target may or may not support call frame exceptions.
1286 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1287 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1288 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1290 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1292 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1293 AC_MSG_CHECKING([for exception model to use])
1296 AC_ARG_ENABLE(sjlj-exceptions,
1297 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1299 [dnl Botheration. Now we've got to detect the exception model.
1300 dnl Link tests against libgcc.a are problematic since -- at least
1301 dnl as of this writing -- we've not been given proper -L bits for
1302 dnl single-tree newlib and libgloss.
1304 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1305 dnl conftest files before we got a change to grep them first.
1306 cat > conftest.$ac_ext << EOF
1307 [#]line __oline__ "configure"
1316 old_CXXFLAGS="$CXXFLAGS"
1318 if AC_TRY_EVAL(ac_compile); then
1319 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1320 enable_sjlj_exceptions=yes
1321 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1322 enable_sjlj_exceptions=no
1325 CXXFLAGS="$old_CXXFLAGS"
1327 if test x$enable_sjlj_exceptions = xyes; then
1328 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1329 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1330 ac_exception_model_name=sjlj
1331 elif test x$enable_sjlj_exceptions = xno; then
1332 ac_exception_model_name="call frame"
1334 AC_MSG_ERROR([unable to detect exception model])
1337 AC_MSG_RESULT($ac_exception_model_name)
1342 dnl Check for ISO/IEC 9899:1999 "C99" support.
1344 dnl GLIBCPP_ENABLE_C99
1345 dnl --enable-c99 defines _GLIBCPP_USE_C99
1346 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1347 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1348 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1349 dnl defaults to `no'.
1350 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1352 dnl GLIBCPP_ENABLE_C99
1353 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1354 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1357 changequote(<<, >>)dnl
1358 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1359 changequote([, ])dnl
1360 [case "$enableval" in
1361 yes) enable_c99=yes ;;
1362 no) enable_c99=no ;;
1363 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1365 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1370 # Check for the existence of <math.h> functions used if C99 is enabled.
1372 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1373 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1374 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1375 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1376 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1377 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1378 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1379 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1380 AC_TRY_COMPILE([#include <math.h>],
1381 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1382 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1383 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1384 AC_TRY_COMPILE([#include <math.h>],
1385 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1386 AC_TRY_COMPILE([#include <math.h>],
1387 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1388 AC_MSG_RESULT($ac_c99_math)
1390 # Check for the existence in <stdio.h> of vscanf, et. al.
1392 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1393 AC_TRY_COMPILE([#include <stdio.h>],
1394 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1395 AC_TRY_COMPILE([#include <stdio.h>
1397 void foo(char* fmt, ...)
1398 {va_list args; va_start(args, fmt);
1399 vfscanf(stderr, "%i", args);}],
1400 [],, [ac_c99_stdio=no])
1401 AC_TRY_COMPILE([#include <stdio.h>
1403 void foo(char* fmt, ...)
1404 {va_list args; va_start(args, fmt);
1405 vscanf("%i", args);}],
1406 [],, [ac_c99_stdio=no])
1407 AC_TRY_COMPILE([#include <stdio.h>
1409 void foo(char* fmt, ...)
1410 {va_list args; va_start(args, fmt);
1411 vsnprintf(fmt, 0, "%i", args);}],
1412 [],, [ac_c99_stdio=no])
1413 AC_TRY_COMPILE([#include <stdio.h>
1415 void foo(char* fmt, ...)
1416 {va_list args; va_start(args, fmt);
1417 vsscanf(fmt, "%i", args);}],
1418 [],, [ac_c99_stdio=no])
1419 AC_MSG_RESULT($ac_c99_stdio)
1421 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1423 AC_MSG_CHECKING([for lldiv_t declaration])
1424 AC_CACHE_VAL(ac_c99_lldiv_t, [
1425 AC_TRY_COMPILE([#include <stdlib.h>],
1427 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1429 AC_MSG_RESULT($ac_c99_lldiv_t)
1431 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1432 AC_TRY_COMPILE([#include <stdlib.h>],
1433 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1434 AC_TRY_COMPILE([#include <stdlib.h>],
1435 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1436 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1437 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1438 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1439 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1440 if test x"$ac_c99_lldiv_t" = x"no"; then
1443 AC_MSG_RESULT($ac_c99_stdlib)
1445 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1446 # XXX the wchar.h checks should be rolled into the general C99 bits.
1448 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1449 AC_TRY_COMPILE([#include <wchar.h>],
1450 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1451 AC_TRY_COMPILE([#include <wchar.h>],
1452 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1453 AC_TRY_COMPILE([#include <wchar.h>],
1454 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1455 AC_MSG_RESULT($ac_c99_wchar)
1457 AC_MSG_CHECKING([for enabled ISO C99 support])
1458 if test x"$ac_c99_math" = x"no" ||
1459 test x"$ac_c99_stdio" = x"no" ||
1460 test x"$ac_c99_stdlib" = x"no" ||
1461 test x"$ac_c99_wchar" = x"no"; then
1464 AC_MSG_RESULT($enable_c99)
1466 # Option parsed, now set things appropriately
1467 if test x"$enable_c99" = x"yes"; then
1468 AC_DEFINE(_GLIBCPP_USE_C99)
1476 dnl Check for template specializations for the 'long long' type extension.
1477 dnl The result determines only whether 'long long' I/O is enabled; things
1478 dnl like numeric_limits<> specializations are always available.
1480 dnl GLIBCPP_ENABLE_LONG_LONG
1481 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1482 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1483 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1484 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1485 dnl defaults to `no'.
1486 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1488 dnl GLIBCPP_ENABLE_LONG_LONG
1489 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1490 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1492 AC_ARG_ENABLE(long-long,
1493 changequote(<<, >>)dnl
1494 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1495 changequote([, ])dnl
1496 [case "$enableval" in
1497 yes) enable_long_long=yes ;;
1498 no) enable_long_long=no ;;
1499 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1501 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1506 AC_MSG_CHECKING([for enabled long long I/O support])
1507 # iostreams require strtoll, strtoull to compile
1508 AC_TRY_COMPILE([#include <stdlib.h>],
1509 [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1510 AC_TRY_COMPILE([#include <stdlib.h>],
1511 [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1513 # Option parsed, now set things appropriately
1514 if test x"$enable_long_long" = xyes; then
1515 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1517 AC_MSG_RESULT($enable_long_long)
1524 dnl Check for what kind of C headers to use.
1526 dnl GLIBCPP_ENABLE_CHEADERS
1527 dnl --enable-cheaders= [does stuff].
1528 dnl --disable-cheaders [does not do anything, really].
1529 dnl + This will eventually need to be 'c_shadow' by default.
1530 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1531 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1532 dnl If ommitted, it defaults to `c_std'.
1533 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1534 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1535 AC_MSG_CHECKING([for c header strategy to use])
1536 AC_ARG_ENABLE(cheaders,
1537 changequote(<<, >>)dnl
1538 << --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1540 [case "$enableval" in
1545 enable_cheaders=c_std
1548 enable_cheaders=c_shadow
1550 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1553 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1554 AC_MSG_RESULT($enable_cheaders)
1556 dnl Option parsed, now set things appropriately
1557 case "$enable_cheaders" in
1559 CSHADOW_FLAGS="-fno-builtin"
1560 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
1561 AC_DEFINE(_GLIBCPP_USE_SHADOW_HEADERS)
1565 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1569 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1573 AC_SUBST(CSHADOW_FLAGS)
1574 AC_SUBST(C_INCLUDE_DIR)
1575 AM_CONDITIONAL(GLIBCPP_USE_CSHADOW, test "$enable_cheaders" = c_shadow)
1580 dnl Check for wide character support. Has the same effect as the option
1581 dnl in gcc's configure, but in a form that autoconf can mess with.
1583 dnl GLIBCPP_ENABLE_C_MBCHAR
1584 dnl --enable-c-mbchar requests all the wchar_t stuff.
1585 dnl --disable-c-mbchar doesn't.
1586 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1587 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1588 dnl defaults to `no'.
1589 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1590 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1591 AC_ARG_ENABLE(c-mbchar,
1592 changequote(<<, >>)dnl
1593 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1594 changequote([, ])dnl
1595 [case "$enableval" in
1596 yes) enable_c_mbchar=yes ;;
1597 no) enable_c_mbchar=no ;;
1598 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1600 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1601 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1606 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1608 dnl TOPLEVEL_INCLUDES
1609 dnl LIBMATH_INCLUDES
1610 dnl LIBSUPCXX_INCLUDES
1612 dnl CSHADOW_INCLUDES
1614 dnl GLIBCPP_EXPORT_INCLUDES
1615 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1616 # Root level of the build directory include sources.
1617 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1619 # Passed down for canadian crosses.
1620 if test x"$CANADIAN" = xyes; then
1621 TOPLEVEL_INCLUDES='-I$(includedir)'
1624 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1626 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1628 if test x"$need_libio" = xyes; then
1629 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1630 AC_SUBST(LIBIO_INCLUDES)
1633 # Now, export this to all the little Makefiles....
1634 AC_SUBST(GLIBCPP_INCLUDES)
1635 AC_SUBST(TOPLEVEL_INCLUDES)
1636 AC_SUBST(LIBMATH_INCLUDES)
1637 AC_SUBST(LIBSUPCXX_INCLUDES)
1642 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1644 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1645 # Optimization flags that are probably a good idea for thrill-seekers. Just
1646 # uncomment the lines below and make, everything else is ready to go...
1647 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1649 AC_SUBST(OPTIMIZE_CXXFLAGS)
1651 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1652 AC_SUBST(WARN_FLAGS)
1656 dnl GLIBCPP_EXPORT_INSTALL_INFO
1657 dnl calculates gxx_install_dir
1658 dnl exports glibcpp_toolexecdir
1659 dnl exports glibcpp_toolexeclibdir
1660 dnl exports glibcpp_prefixdir
1662 dnl Assumes cross_compiling bits already done, and with_cross_host in
1665 dnl GLIBCPP_EXPORT_INSTALL_INFO
1666 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1667 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1668 # exported correctly in GLIBCPP_CONFIGURE.
1669 glibcpp_toolexecdir=no
1670 glibcpp_toolexeclibdir=no
1671 glibcpp_prefixdir=${prefix}
1673 AC_MSG_CHECKING([for interface version number])
1674 libstdcxx_interface=$INTERFACE
1675 AC_MSG_RESULT($libstdcxx_interface)
1677 # Process the option --with-gxx-include-dir=<path to include-files directory>
1678 AC_MSG_CHECKING([for --with-gxx-include-dir])
1679 AC_ARG_WITH(gxx-include-dir,
1680 [ --with-gxx-include-dir the installation directory for include files],
1681 [case "${withval}" in
1683 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1690 gxx_include_dir=${withval}
1692 esac], [gxx_include_dir=no])
1693 AC_MSG_RESULT($gxx_include_dir)
1695 # Process the option "--enable-version-specific-runtime-libs"
1696 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1697 AC_ARG_ENABLE(version-specific-runtime-libs,
1698 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1699 [case "$enableval" in
1700 yes) version_specific_libs=yes ;;
1701 no) version_specific_libs=no ;;
1702 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
1704 version_specific_libs=no)dnl
1705 # Option set, now we can test it.
1706 AC_MSG_RESULT($version_specific_libs)
1708 if test $version_specific_libs = yes; then
1709 # Need the gcc compiler version to know where to install libraries
1710 # and header files if --enable-version-specific-runtime-libs option
1713 gcc_version_trigger=${srcdir}/../gcc/version.c
1714 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1715 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1716 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1717 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1718 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1722 # Default case for install directory for include files.
1723 if test $version_specific_libs = no &&
1724 test $gxx_include_dir = no; then
1725 gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1728 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1729 # Install a library built with a cross compiler in tooldir, not libdir.
1730 if test x"$glibcpp_toolexecdir" = x"no"; then
1731 if test -n "$with_cross_host" &&
1732 test x"$with_cross_host" != x"no"; then
1733 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1734 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1736 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1737 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1741 AC_MSG_CHECKING([for install location])
1742 AC_MSG_RESULT($gxx_include_dir)
1744 AC_SUBST(glibcpp_prefixdir)
1745 AC_SUBST(gxx_include_dir)
1746 AC_SUBST(glibcpp_toolexecdir)
1747 AC_SUBST(glibcpp_toolexeclibdir)
1751 # Check for functions in math library.
1752 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1754 # This file can be copied and used freely without restrictions. It can
1755 # be used in projects which are not available under the GNU Public License
1756 # but which still want to provide support for the GNU gettext functionality.
1757 # Please note that the actual code is *not* freely available.
1761 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1762 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1763 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])
1764 AC_SUBST(LIBMATHOBJS)dnl
1769 dnl This macro searches for a GNU version of make. If a match is found, the
1770 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1771 dnl set to "#". This is useful for including a special features in a Makefile,
1772 dnl which cannot be handled by other versions of make. The variable
1773 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1774 dnl the empty string otherwise.
1776 dnl Here is an example of its use:
1778 dnl Makefile.in might contain:
1780 dnl # A failsafe way of putting a dependency rule into a makefile
1782 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1784 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1785 dnl @ifGNUmake@ include $(DEPEND)
1786 dnl @ifGNUmake@ endif
1788 dnl Then configure.in would normally contain:
1790 dnl CHECK_GNU_MAKE()
1791 dnl AC_OUTPUT(Makefile)
1793 dnl Then perhaps to cause gnu make to override any other make, we could do
1794 dnl something like this (note that GNU make always looks for GNUmakefile first):
1796 dnl if ! test x$_cv_gnu_make_command = x ; then
1797 dnl mv Makefile GNUmakefile
1798 dnl echo .DEFAULT: > Makefile ;
1799 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1802 dnl Then, if any (well almost any) other make is called, and GNU make also
1803 dnl exists, then the other make wraps the GNU make.
1805 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1806 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1808 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1809 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1810 dnl #### conditional's subshell (" --version" is not a command), using a
1811 dnl #### different option to grep(1).
1813 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1814 dnl #### ${MAKE:-make}).
1817 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1818 _cv_gnu_make_command='' ;
1819 dnl Search all the common names for GNU make
1820 for a in "${MAKE-make}" make gmake gnumake ; do
1821 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1823 _cv_gnu_make_command=$a ;
1828 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1829 dnl string, '#' otherwise
1830 if test "x$_cv_gnu_make_command" != "x" ; then
1839 dnl Check for headers for, and arguments to, the setrlimit() function.
1840 dnl Used only in testsuite_hooks.h.
1841 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
1842 AC_TRY_COMPILE([#include <sys/resource.h>
1844 ], [ int f = RLIMIT_$1 ; ],
1845 [glibcpp_mresult=1], [glibcpp_mresult=0])
1846 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
1847 [Only used in build directory testsuite_hooks.h.])
1849 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
1850 setrlimit_have_headers=yes
1851 AC_CHECK_HEADERS(sys/resource.h unistd.h,
1853 setrlimit_have_headers=no)
1854 # If don't have the headers, then we can't run the tests now, and we
1855 # won't be seeing any of these during testsuite compilation.
1856 if test $setrlimit_have_headers = yes; then
1857 # Can't do these in a loop, else the resulting syntax is wrong.
1858 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
1859 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
1860 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
1861 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
1863 # Check for rlimit, setrlimit.
1864 AC_CACHE_VAL(ac_setrlimit, [
1865 AC_TRY_COMPILE([#include <sys/resource.h>
1868 [ struct rlimit r; setrlimit(0, &r);],
1869 [ac_setrlimit=yes], [ac_setrlimit=no])
1873 AC_MSG_CHECKING([for testsuite memory limit support])
1874 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
1876 AC_DEFINE(_GLIBCPP_MEM_LIMITS)
1880 AC_MSG_RESULT($ac_mem_limits)
1885 dnl Does any necessary configuration of the testsuite directory. Generates
1886 dnl the testsuite_hooks.h header.
1888 dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
1889 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
1890 GLIBCPP_CHECK_SETRLIMIT
1894 sinclude(../libtool.m4)
1895 dnl The lines below arrange for aclocal not to bring an installed
1896 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1897 dnl add a definition of LIBTOOL to Makefile.in.
1898 ifelse(,,,[AC_SUBST(LIBTOOL)
1899 AC_DEFUN([AM_PROG_LIBTOOL])
1900 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1901 AC_DEFUN([AC_PROG_LD])
1905 # Check whether LC_MESSAGES is available in <locale.h>.
1906 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1908 # This file file be copied and used freely without restrictions. It can
1909 # be used in projects which are not available under the GNU Public License
1910 # but which still want to provide support for the GNU gettext functionality.
1911 # Please note that the actual code is *not* freely available.
1915 AC_DEFUN(AC_LC_MESSAGES, [
1916 AC_CHECK_HEADER(locale.h, [
1917 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1918 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1919 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1920 if test $ac_cv_val_LC_MESSAGES = yes; then
1921 AC_DEFINE(HAVE_LC_MESSAGES)
1928 dnl Check for whether the Boost-derived checks should be turned on.
1930 dnl GLIBCPP_ENABLE_CONCEPT_CHECKS
1931 dnl --enable-concept-checks turns them on.
1932 dnl --disable-concept-checks leaves them off.
1933 dnl + Usage: GLIBCPP_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
1934 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1935 dnl defaults to `no'.
1936 AC_DEFUN(GLIBCPP_ENABLE_CONCEPT_CHECKS, [dnl
1937 define([GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
1938 AC_ARG_ENABLE(concept-checks,
1939 changequote(<<, >>)dnl
1940 << --enable-concept-checks use Boost-derived template checks [default=>>GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT],
1941 changequote([, ])dnl
1942 [case "$enableval" in
1943 yes) enable_concept_checks=yes ;;
1944 no) enable_concept_checks=no ;;
1945 *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
1947 enable_concept_checks=GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
1948 dnl Option parsed, now set things appropriately
1949 if test x"$enable_concept_checks" = xyes; then
1950 AC_DEFINE(_GLIBCPP_CONCEPT_CHECKS)