1 dnl aclocal.m4 generated automatically by aclocal 1.4-p6
3 dnl Copyright (C) 1994, 1995-8, 1999, 2001 Free Software Foundation, Inc.
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
8 dnl This program is distributed in the hope that it will be useful,
9 dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
10 dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
11 dnl PARTICULAR PURPOSE.
14 dnl Initialize basic configure bits, set toplevel_srcdir for Makefiles.
16 dnl GLIBCXX_TOPREL_CONFIGURE
17 AC_DEFUN(GLIBCXX_TOPREL_CONFIGURE, [
18 dnl Default to --enable-multilib (this is also passed by default
19 dnl from the ubercommon-top-level configure)
20 AC_ARG_ENABLE(multilib,
21 [ --enable-multilib build hella library versions (default)],
22 [case "${enableval}" in
25 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
26 esac], [multilib=yes])dnl
28 # When building with srcdir == objdir, links to the source files will
29 # be created in directories within the target_subdir. We have to
30 # adjust toplevel_srcdir accordingly, so that configure finds
31 # install-sh and other auxiliary files that live in the top-level
33 if test "${srcdir}" = "."; then
34 if test -z "${with_target_subdir}"; then
37 if test "${with_target_subdir}" != "."; then
38 toprel="${with_multisrctop}../.."
40 toprel="${with_multisrctop}.."
46 AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
47 toplevel_srcdir=\${top_srcdir}/$toprel
48 AC_SUBST(toplevel_srcdir)
52 dnl Initialize the rest of the library configury.
55 AC_DEFUN(GLIBCXX_CONFIGURE, [
56 # Export build and source directories.
57 # These need to be absolute paths, yet at the same time need to
58 # canonicalize only relative paths, because then amd will not unmount
59 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
60 glibcxx_builddir=`${PWDCMD-pwd}`
62 [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;;
63 *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
65 AC_SUBST(glibcxx_builddir)
66 AC_SUBST(glibcxx_srcdir)
68 dnl This is here just to satisfy automake.
69 ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
72 # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also
73 # be 'cp -p' if linking isn't available. Uncomment the next line to
74 # force a particular method.
75 #ac_cv_prog_LN_S='cp -p'
78 # We use these options to decide which functions to include.
79 AC_ARG_WITH(target-subdir,
80 [ --with-target-subdir=SUBDIR
81 configuring in a subdirectory])
82 AC_ARG_WITH(cross-host,
83 [ --with-cross-host=HOST configuring with a cross compiler])
86 [ --with-newlib Configuring with newlib])
88 glibcxx_basedir=$srcdir/$toprel/$1/libstdc++-v3
89 AC_SUBST(glibcxx_basedir)
91 # Never versions of autoconf add an underscore to these functions.
92 # Prevent future problems ...
93 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
94 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
95 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
96 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
99 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
100 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
101 # are probably using a cross compiler, which will not be able to fully
102 # link an executable. This is addressed in later versions of autoconf.
104 AC_DEFUN(LIB_AC_PROG_CC,
105 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
106 dnl Fool anybody using AC_PROG_CC.
107 AC_PROVIDE([AC_PROG_CC])
108 AC_CHECK_PROG(CC, gcc, gcc)
109 if test -z "$CC"; then
110 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
111 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
116 if test $ac_cv_prog_gcc = yes; then
118 dnl Check whether -g works, even if CFLAGS is set, in case the package
119 dnl plays around with CFLAGS (such as to build both debugging and
120 dnl normal versions of a library), tasteless as that idea is.
121 ac_test_CFLAGS="${CFLAGS+set}"
122 ac_save_CFLAGS="$CFLAGS"
125 if test "$ac_test_CFLAGS" = set; then
126 CFLAGS="$ac_save_CFLAGS"
127 elif test $ac_cv_prog_cc_g = yes; then
134 test "${CFLAGS+set}" = set || CFLAGS="-g"
140 # Likewise for AC_PROG_CXX. We can't just call it directly because g++
141 # will try to link in libstdc++.
142 AC_DEFUN(LIB_AC_PROG_CXX,
143 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
144 dnl Fool anybody using AC_PROG_CXX.
145 AC_PROVIDE([AC_PROG_CXX])
146 # Use glibcxx_CXX so that we do not cause CXX to be cached with the
147 # flags that come in CXX while configuring libstdc++. They're different
148 # from those used for all other target libraries. If CXX is set in
149 # the environment, respect that here.
151 AC_CHECK_PROGS(glibcxx_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
152 AC_SUBST(glibcxx_CXX)
154 test -z "$glibcxx_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
158 if test $ac_cv_prog_gxx = yes; then
160 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
161 dnl plays around with CXXFLAGS (such as to build both debugging and
162 dnl normal versions of a library), tasteless as that idea is.
163 ac_test_CXXFLAGS="${CXXFLAGS+set}"
164 ac_save_CXXFLAGS="$CXXFLAGS"
167 if test "$ac_test_CXXFLAGS" = set; then
168 CXXFLAGS="$ac_save_CXXFLAGS"
169 elif test $ac_cv_prog_cxx_g = yes; then
176 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
182 # For directory versioning (e.g., headers) and other variables.
183 AC_MSG_CHECKING([for GCC version number])
184 gcc_version=`$glibcxx_CXX -dumpversion`
185 AC_MSG_RESULT($gcc_version)
187 # For some reason, gettext needs this.
190 AC_CHECK_TOOL(AS, as)
191 AC_CHECK_TOOL(AR, ar)
192 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
197 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
198 # at least currently, we never actually build a program, so we never
199 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
200 # fails, because we are probably configuring with a cross compiler
201 # which can't create executables. So we include AC_EXEEXT to keep
202 # automake happy, but we don't execute it, since we don't care about
205 # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
206 # to nothing, so nothing would remain between `then' and `fi' if it
207 # were not for the `:' below.
212 case [$]{glibcxx_basedir} in
213 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcxx_basedir} ;;
214 *) glibcxx_flagbasedir='[$](top_builddir)/'[$]{glibcxx_basedir} ;;
217 # Set up safe default values for all subsequent AM_CONDITIONAL tests.
227 # Find platform-specific directories containing configuration info. In
228 # addition to possibly modifying the same flags, it also sets up symlinks.
234 dnl Check to see if g++ can compile this library, and if so, if any version-
235 dnl specific precautions need to be taken.
237 dnl GLIBCXX_CHECK_COMPILER_VERSION
238 AC_DEFUN(GLIBCXX_CHECK_COMPILER_VERSION, [
239 if test ! -f stamp-sanity-compiler; then
240 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
247 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
249 AC_MSG_RESULT($gpp_satisfactory)
250 touch stamp-sanity-compiler
256 dnl Tests for newer compiler features, or features that are present in newer
257 dnl compiler versions but not older compiler versions still in use, should
260 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
261 dnl new inlining code or the new system_header pragma will die on -Werror.
262 dnl Leave it out by default and use maint-mode to use it.
264 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
265 dnl compiler supports it and the user has not requested debug mode.
267 dnl GLIBCXX_CHECK_COMPILER_FEATURES
268 AC_DEFUN(GLIBCXX_CHECK_COMPILER_FEATURES, [
269 # All these tests are for C++; save the language and the compiler flags.
270 # The CXXFLAGS thing is suspicious, but based on similar bits previously
271 # found in GLIBCXX_CONFIGURE.
274 ac_test_CXXFLAGS="${CXXFLAGS+set}"
275 ac_save_CXXFLAGS="$CXXFLAGS"
277 # Check for maintainer-mode bits.
278 if test x"$USE_MAINTAINER_MODE" = xno; then
284 # Check for -ffunction-sections -fdata-sections
285 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
286 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
287 AC_TRY_COMPILE(, [int foo;
288 ], [ac_fdsections=yes], [ac_fdsections=no])
289 if test "$ac_test_CXXFLAGS" = set; then
290 CXXFLAGS="$ac_save_CXXFLAGS"
292 # this is the suspicious part
295 if test x"$ac_fdsections" = x"yes"; then
296 SECTION_FLAGS='-ffunction-sections -fdata-sections'
298 AC_MSG_RESULT($ac_fdsections)
302 AC_SUBST(SECTION_FLAGS)
307 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
308 dnl the native linker is in use, all variables will be defined to something
309 dnl safe (like an empty string).
311 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
312 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
313 dnl Define LD, with_gnu_ld, and (possibly) glibcxx_gnu_ld_version as
314 dnl side-effects of testing. The last will be a single integer, e.g.,
315 dnl version 1.23.45.0.67.89 will set glibcxx_gnu_ld_version to 12345.
317 dnl GLIBCXX_CHECK_LINKER_FEATURES
318 AC_DEFUN(GLIBCXX_CHECK_LINKER_FEATURES, [
319 # If we're not using GNU ld, then there's no point in even trying these
320 # tests. Check for that first. We should have already tested for gld
321 # by now (in libtool), but require it now just to be safe...
322 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
323 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
324 AC_REQUIRE([AC_PROG_LD])
326 # The name set by libtool depends on the version of libtool. Shame on us
327 # for depending on an impl detail, but c'est la vie. Older versions used
328 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
329 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
330 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
331 # set (hence we're using an older libtool), then set it.
332 if test x${with_gnu_ld+set} != xset; then
333 if test x${ac_cv_prog_gnu_ld+set} != xset; then
334 # We got through "ac_require(ac_prog_ld)" and still not set? Huh?
337 with_gnu_ld=$ac_cv_prog_gnu_ld
341 # Start by getting the version number. I think the libtool test already
342 # does some of this, but throws away the result.
344 ldver=`$LD --version 2>/dev/null | head -1 | \
345 sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
347 glibcxx_gnu_ld_version=`echo $ldver | \
348 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
351 if test "$with_gnu_ld" = "notbroken"; then
352 # GNU ld it is! Joy and bunny rabbits!
354 # All these tests are for C++; save the language and the compiler flags.
355 # Need to do this so that g++ won't try to link in libstdc++
356 ac_test_CFLAGS="${CFLAGS+set}"
357 ac_save_CFLAGS="$CFLAGS"
358 CFLAGS='-x c++ -Wl,--gc-sections'
360 # Check for -Wl,--gc-sections
361 # XXX This test is broken at the moment, as symbols required for
362 # linking are now in libsupc++ (not built yet.....). In addition,
363 # this test has cored on solaris in the past. In addition,
364 # --gc-sections doesn't really work at the moment (keeps on discarding
365 # used sections, first .eh_frame and now some of the glibc sections for
366 # iconv). Bzzzzt. Thanks for playing, maybe next time.
367 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
375 ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
376 if test "$ac_test_CFLAGS" = set; then
377 CFLAGS="$ac_save_CFLAGS"
379 # this is the suspicious part
382 if test "$ac_sectionLDflags" = "yes"; then
383 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
385 AC_MSG_RESULT($ac_sectionLDflags)
388 # Set linker optimization flags.
389 if test x"$with_gnu_ld" = x"yes"; then
390 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
393 AC_SUBST(SECTION_LDFLAGS)
394 AC_SUBST(OPT_LDFLAGS)
399 dnl Check to see if the (math function) argument passed is
400 dnl declared when using the c++ compiler
401 dnl ASSUMES argument is a math function with ONE parameter
403 dnl GLIBCXX_CHECK_MATH_DECL_1
404 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_1, [
405 AC_MSG_CHECKING([for $1 declaration])
406 if test x${glibcxx_cv_func_$1_use+set} != xset; then
407 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
410 AC_TRY_COMPILE([#include <math.h>
416 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
420 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
424 dnl Check to see if the (math function) argument passed is
425 dnl 1) declared when using the c++ compiler
426 dnl 2) has "C" linkage
427 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
429 dnl Define HAVE_CARGF etc if "cargf" is declared and links
431 dnl argument 1 is name of function to check
433 dnl ASSUMES argument is a math function with ONE parameter
435 dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1
436 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1, [
437 GLIBCXX_CHECK_MATH_DECL_1($1)
438 if test x$glibcxx_cv_func_$1_use = x"yes"; then
441 GLIBCXX_CHECK_MATH_DECL_1(_$1)
442 if test x$glibcxx_cv_func__$1_use = x"yes"; then
450 dnl Like GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
451 dnl of functions at once. It's an all-or-nothing check -- either
452 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
453 dnl Doing it this way saves significant configure time.
454 AC_DEFUN(GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1, [
455 AC_MSG_CHECKING([for $1 functions])
456 AC_CACHE_VAL(glibcxx_cv_func_$2_use, [
459 AC_TRY_COMPILE([#include <math.h>],
460 [ `for x in $3; do echo "$x (0);"; done` ],
461 [glibcxx_cv_func_$2_use=yes],
462 [glibcxx_cv_func_$2_use=no])
464 AC_MSG_RESULT($glibcxx_cv_func_$2_use)
465 if test x$glibcxx_cv_func_$2_use = x"yes"; then
471 dnl Check to see if the (math function) argument passed is
472 dnl declared when using the c++ compiler
473 dnl ASSUMES argument is a math function with TWO parameters
475 dnl GLIBCXX_CHECK_MATH_DECL_2
476 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_2, [
477 AC_MSG_CHECKING([for $1 declaration])
478 if test x${glibcxx_cv_func_$1_use+set} != xset; then
479 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
482 AC_TRY_COMPILE([#include <math.h>],
484 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
488 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
492 dnl Check to see if the (math function) argument passed is
493 dnl 1) declared when using the c++ compiler
494 dnl 2) has "C" linkage
496 dnl Define HAVE_CARGF etc if "cargf" is declared and links
498 dnl argument 1 is name of function to check
500 dnl ASSUMES argument is a math function with TWO parameters
502 dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2
503 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2, [
504 GLIBCXX_CHECK_MATH_DECL_2($1)
505 if test x$glibcxx_cv_func_$1_use = x"yes"; then
508 GLIBCXX_CHECK_MATH_DECL_2(_$1)
509 if test x$glibcxx_cv_func__$1_use = x"yes"; then
517 dnl Check to see if the (math function) argument passed is
518 dnl declared when using the c++ compiler
519 dnl ASSUMES argument is a math function with THREE parameters
521 dnl GLIBCXX_CHECK_MATH_DECL_3
522 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_3, [
523 AC_MSG_CHECKING([for $1 declaration])
524 if test x${glibcxx_cv_func_$1_use+set} != xset; then
525 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
528 AC_TRY_COMPILE([#include <math.h>],
530 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
534 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
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 THREE parameters
548 dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3
549 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3, [
550 GLIBCXX_CHECK_MATH_DECL_3($1)
551 if test x$glibcxx_cv_func_$1_use = x"yes"; then
554 GLIBCXX_CHECK_MATH_DECL_3(_$1)
555 if test x$glibcxx_cv_func__$1_use = x"yes"; then
563 dnl Check to see if the (stdlib function) argument passed is
564 dnl 1) declared when using the c++ compiler
565 dnl 2) has "C" linkage
567 dnl argument 1 is name of function to check
569 dnl ASSUMES argument is a math function with TWO parameters
571 dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2
572 AC_DEFUN(GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
573 AC_MSG_CHECKING([for $1 declaration])
574 if test x${glibcxx_cv_func_$1_use+set} != xset; then
575 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
578 AC_TRY_COMPILE([#include <stdlib.h>],
580 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
584 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
585 if test x$glibcxx_cv_func_$1_use = x"yes"; then
592 dnl Check to see if the (stdlib function) argument passed is
593 dnl 1) declared when using the c++ compiler
594 dnl 2) has "C" linkage
596 dnl argument 1 is name of function to check
598 dnl ASSUMES argument is a function with THREE parameters
600 dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3
601 AC_DEFUN(GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3, [
602 AC_MSG_CHECKING([for $1 declaration])
603 if test x${glibcxx_cv_func_$1_use+set} != xset; then
604 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
607 AC_TRY_COMPILE([#include <stdlib.h>],
609 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
613 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
614 if test x$glibcxx_cv_func_$1_use = x"yes"; then
620 dnl Because the builtins are picky picky picky about the arguments they take,
621 dnl do an explict linkage tests here.
622 dnl Check to see if the (math function) argument passed is
623 dnl 1) declared when using the c++ compiler
624 dnl 2) has "C" linkage
626 dnl Define HAVE_CARGF etc if "cargf" is declared and links
628 dnl argument 1 is name of function to check
630 dnl ASSUMES argument is a math function with ONE parameter
632 dnl GLIBCXX_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
633 AC_DEFUN(GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
634 AC_MSG_CHECKING([for $1 declaration])
635 if test x${glibcxx_cv_func_$1_use+set} != xset; then
636 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
639 AC_TRY_COMPILE([#include <math.h>],
641 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
645 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
646 if test x$glibcxx_cv_func_$1_use = x"yes"; then
647 AC_MSG_CHECKING([for $1 linkage])
648 if test x${glibcxx_cv_func_$1_link+set} != xset; then
649 AC_CACHE_VAL(glibcxx_cv_func_$1_link, [
650 AC_TRY_LINK([#include <math.h>],
652 [glibcxx_cv_func_$1_link=yes], [glibcxx_cv_func_$1_link=no])
655 AC_MSG_RESULT($glibcxx_cv_func_$1_link)
656 if test x$glibcxx_cv_func_$1_link = x"yes"; then
657 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
658 AC_DEFINE_UNQUOTED(${ac_tr_func})
665 dnl Check to see what builtin math functions are supported
667 dnl check for __builtin_abs
668 dnl check for __builtin_fabsf
669 dnl check for __builtin_fabs
670 dnl check for __builtin_fabl
671 dnl check for __builtin_labs
672 dnl check for __builtin_sqrtf
673 dnl check for __builtin_sqrtl
674 dnl check for __builtin_sqrt
675 dnl check for __builtin_sinf
676 dnl check for __builtin_sin
677 dnl check for __builtin_sinl
678 dnl check for __builtin_cosf
679 dnl check for __builtin_cos
680 dnl check for __builtin_cosl
682 dnl GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT
683 AC_DEFUN(GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT, [
684 dnl Test for builtin math functions.
685 dnl These are made in gcc/c-common.c
686 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
687 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
688 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
689 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
690 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
692 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
693 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
694 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
696 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
697 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
698 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
700 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
701 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
702 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
704 dnl There is, without a doubt, a more elegant way to have these
705 dnl names exported so that they won't be stripped out of acconfig.h by
706 dnl autoheader. I leave this as an exercise to somebody less frustrated
707 dnl than I.... please email the libstdc++ list if you can figure out a
708 dnl more elegant approach (see autoconf/acgen.m4 and specifically
709 dnl AC_CHECK_FUNC for things to steal.)
711 if test x$dummyvar = x"yes"; then
712 AC_DEFINE(HAVE___BUILTIN_ABS)
713 AC_DEFINE(HAVE___BUILTIN_LABS)
714 AC_DEFINE(HAVE___BUILTIN_COS)
715 AC_DEFINE(HAVE___BUILTIN_COSF)
716 AC_DEFINE(HAVE___BUILTIN_COSL)
717 AC_DEFINE(HAVE___BUILTIN_FABS)
718 AC_DEFINE(HAVE___BUILTIN_FABSF)
719 AC_DEFINE(HAVE___BUILTIN_FABSL)
720 AC_DEFINE(HAVE___BUILTIN_SIN)
721 AC_DEFINE(HAVE___BUILTIN_SINF)
722 AC_DEFINE(HAVE___BUILTIN_SINL)
723 AC_DEFINE(HAVE___BUILTIN_SQRT)
724 AC_DEFINE(HAVE___BUILTIN_SQRTF)
725 AC_DEFINE(HAVE___BUILTIN_SQRTL)
730 dnl Check to see what the underlying c library is like
731 dnl These checks need to do two things:
732 dnl 1) make sure the name is declared when using the c++ compiler
733 dnl 2) make sure the name has "C" linkage
734 dnl This might seem like overkill but experience has shown that it's not...
736 dnl Define HAVE_STRTOLD if "strtold" is declared and links
737 dnl Define HAVE_STRTOF if "strtof" is declared and links
738 dnl Define HAVE_DRAND48 if "drand48" is declared and links
740 dnl GLIBCXX_CHECK_STDLIB_SUPPORT
741 AC_DEFUN(GLIBCXX_CHECK_STDLIB_SUPPORT, [
742 ac_test_CXXFLAGS="${CXXFLAGS+set}"
743 ac_save_CXXFLAGS="$CXXFLAGS"
744 CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
746 GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
747 GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
748 AC_CHECK_FUNCS(drand48)
750 CXXFLAGS="$ac_save_CXXFLAGS"
754 dnl Check to see what the underlying c library or math library is like.
755 dnl These checks need to do two things:
756 dnl 1) make sure the name is declared when using the c++ compiler
757 dnl 2) make sure the name has "C" linkage
758 dnl This might seem like overkill but experience has shown that it's not...
760 dnl Define HAVE_CARGF etc if "cargf" is found.
762 dnl GLIBCXX_CHECK_MATH_SUPPORT
763 AC_DEFUN(GLIBCXX_CHECK_MATH_SUPPORT, [
764 ac_test_CXXFLAGS="${CXXFLAGS+set}"
765 ac_save_CXXFLAGS="$CXXFLAGS"
766 CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
769 AC_CHECK_LIB(m, sin, libm="-lm")
773 dnl Check to see if certain C math functions exist.
774 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
775 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
776 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
777 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
778 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
779 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
780 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
781 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
783 dnl Check to see if basic C math functions have float versions.
784 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
789 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
792 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
793 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
794 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
795 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
796 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
797 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
798 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
799 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
800 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
801 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
802 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
803 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
804 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
805 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
806 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
807 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
809 dnl Check to see if basic C math functions have long double versions.
810 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
815 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
818 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
819 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
820 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
821 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
822 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
823 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
824 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
825 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
826 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
827 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
828 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
829 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
830 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
831 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
832 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
833 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
834 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
836 dnl Some runtimes have these functions with a preceding underscore. Please
837 dnl keep this sync'd with the one above. And if you add any new symbol,
838 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
839 dnl Check to see if certain C math functions exist.
841 dnl Check to see if basic C math functions have float versions.
842 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
844 _acosf _asinf _atanf \
846 _coshf _sinhf _tanhf)
847 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
851 dnl Check to see if basic C math functions have long double versions.
852 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
854 _acosl _asinl _atanl \
856 _coshl _sinhl _tanhl)
857 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
862 CXXFLAGS="$ac_save_CXXFLAGS"
867 dnl Check to see if there is native support for complex
869 dnl Don't compile bits in math/* if native support exits.
871 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
873 dnl GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT
874 AC_DEFUN(GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT, [
875 dnl Check for complex versions of math functions of platform. This will
876 dnl always pass if libm is available, and fail if it isn't. If it is
877 dnl available, we assume we'll need it later, so add it to LIBS.
878 AC_CHECK_LIB(m, main)
879 AC_REPLACE_MATHFUNCS(nan copysignf)
881 dnl For __signbit to signbit conversions.
882 AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
883 AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
885 dnl Compile the long double complex functions only if the function
886 dnl provides the non-complex long double functions that are needed.
887 dnl Currently this includes copysignl, which should be
888 dnl cached from the GLIBCXX_CHECK_MATH_SUPPORT macro, above.
889 if test x$ac_cv_func_copysignl = x"yes"; then
890 AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
893 if test -n "$LIBMATHOBJS"; then
896 AC_SUBST(LIBMATHOBJS)
900 dnl Check to see what architecture and operating system we are compiling
901 dnl for. Also, if architecture- or OS-specific flags are required for
902 dnl compilation, pick them up here.
904 dnl GLIBCXX_CHECK_HOST
905 AC_DEFUN(GLIBCXX_CHECK_HOST, [
906 . [$]{glibcxx_basedir}/configure.host
907 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
908 AC_MSG_RESULT(OS config directory is $os_include_dir)
913 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
914 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
915 dnl must have been previously checked.)
917 dnl Define _GLIBCXX_USE_WCHAR_T if all the bits are found
918 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
920 dnl GLIBCXX_CHECK_WCHAR_T_SUPPORT
921 AC_DEFUN(GLIBCXX_CHECK_WCHAR_T_SUPPORT, [
922 dnl Wide characters disabled by default.
924 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
925 dnl others even if wchar_t support is not on.
926 AC_MSG_CHECKING([for mbstate_t])
927 AC_TRY_COMPILE([#include <wchar.h>],
928 [mbstate_t teststate;],
929 have_mbstate_t=yes, have_mbstate_t=no)
930 AC_MSG_RESULT($have_mbstate_t)
931 if test x"$have_mbstate_t" = xyes; then
932 AC_DEFINE(HAVE_MBSTATE_T)
935 dnl Sanity check for existence of ISO C99 headers for extended encoding.
936 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
937 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
939 dnl Only continue checking if the ISO C99 headers exist and support is on.
940 if test x"$ac_has_wchar_h" = xyes &&
941 test x"$ac_has_wctype_h" = xyes &&
942 test x"$enable_c_mbchar" != xno; then
944 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
945 dnl numeric_limits can instantiate type_traits<wchar_t>
946 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
947 AC_TRY_COMPILE([#include <wchar.h>],
948 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
949 has_wchar_minmax=yes, has_wchar_minmax=no)
950 AC_MSG_RESULT($has_wchar_minmax)
952 dnl Test wchar.h for WEOF, which is what we use to determine whether
953 dnl to specialize for char_traits<wchar_t> or not.
954 AC_MSG_CHECKING([for WEOF])
957 #include <stddef.h>],
959 has_weof=yes, has_weof=no)
960 AC_MSG_RESULT($has_weof)
962 dnl Tests for wide character functions used in char_traits<wchar_t>.
964 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
967 dnl Checks for names injected into std:: by the c_std headers.
968 AC_CHECK_FUNCS(btowc wctob fgetwc fgetws fputwc fputws fwide \
969 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
970 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
971 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
972 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
973 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
976 AC_MSG_CHECKING([for ISO C99 wchar_t support])
977 if test x"$has_weof" = xyes &&
978 test x"$has_wchar_minmax" = xyes &&
979 test x"$ac_wfuncs" = xyes; then
980 ac_isoC99_wchar_t=yes
984 AC_MSG_RESULT($ac_isoC99_wchar_t)
986 dnl Use iconv for wchar_t to char conversions. As such, check for
987 dnl X/Open Portability Guide, version 2 features (XPG2).
988 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
989 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
991 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
992 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
994 LIBS="$LIBS $libiconv"
996 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
997 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1001 AC_MSG_CHECKING([for XPG2 wchar_t support])
1002 if test x"$ac_has_iconv_h" = xyes &&
1003 test x"$ac_has_langinfo_h" = xyes &&
1004 test x"$ac_XPG2funcs" = xyes; then
1009 AC_MSG_RESULT($ac_XPG2_wchar_t)
1011 dnl At the moment, only enable wchar_t specializations if all the
1012 dnl above support is present.
1013 if test x"$ac_isoC99_wchar_t" = xyes &&
1014 test x"$ac_XPG2_wchar_t" = xyes; then
1015 AC_DEFINE(_GLIBCXX_USE_WCHAR_T)
1019 AC_MSG_CHECKING([for enabled wchar_t specializations])
1020 AC_MSG_RESULT($enable_wchar_t)
1025 dnl Check to see if debugging libraries are to be built.
1027 dnl GLIBCXX_ENABLE_DEBUG
1029 dnl --enable-libstdcxx-debug
1030 dnl builds a separate set of debugging libraries in addition to the
1031 dnl normal (shared, static) libstdc++ binaries.
1033 dnl --disable-libstdcxx-debug
1034 dnl builds only one (non-debug) version of libstdc++.
1036 dnl --enable-libstdcxx-debug-flags=FLAGS
1037 dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
1039 dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)]
1040 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1041 dnl defaults to `no'.
1042 AC_DEFUN(GLIBCXX_ENABLE_DEBUG, [dnl
1043 define([GLIBCXX_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1044 AC_ARG_ENABLE(libstdcxx_debug,
1045 changequote(<<, >>)dnl
1046 << --enable-libstdcxx-debug build extra debug library [default=>>GLIBCXX_ENABLE_DEBUG_DEFAULT],
1047 changequote([, ])dnl
1048 [case "${enableval}" in
1049 yes) enable_libstdcxx_debug=yes ;;
1050 no) enable_libstdcxx_debug=no ;;
1051 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1053 enable_libstdcxx_debug=GLIBCXX_ENABLE_DEBUG_DEFAULT)dnl
1054 AC_MSG_CHECKING([for additional debug build])
1055 AC_MSG_RESULT($enable_libstdcxx_debug)
1056 AM_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test "$enable_libstdcxx_debug" = yes)
1060 dnl Check for explicit debug flags.
1062 dnl GLIBCXX_ENABLE_DEBUG_FLAGS
1064 dnl --enable-libstdcxx-debug-flags='-O1'
1065 dnl is a general method for passing flags to be used when
1066 dnl building debug libraries with --enable-debug.
1068 dnl --disable-libstdcxx-debug-flags does nothing.
1069 dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
1070 dnl If "default flags" is an empty string (or "none"), the effect is
1071 dnl the same as --disable or --enable=no.
1072 AC_DEFUN(GLIBCXX_ENABLE_DEBUG_FLAGS, [dnl
1073 define([GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1074 AC_ARG_ENABLE(libstdcxx_debug_flags,
1075 changequote(<<, >>)dnl
1076 << --enable-libstdcxx-debug-flags=FLAGS pass compiler FLAGS when building
1078 [default=>>GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT],
1079 changequote([, ])dnl
1080 [case "${enableval}" in
1082 -*) enable_libstdcxx_debug_flags="${enableval}" ;;
1083 *) AC_MSG_ERROR([Unknown argument to extra debugging flags]) ;;
1085 enable_libstdcxx_debug_flags=GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT)dnl
1087 dnl Option parsed, now set things appropriately
1088 case x"$enable_libstdcxx_debug" in
1090 case "$enable_libstdcxx_debug_flags" in
1092 DEBUG_FLAGS="-g3 -O0";;
1094 DEBUG_FLAGS="${enableval}"
1101 AC_SUBST(DEBUG_FLAGS)
1103 AC_MSG_CHECKING([for debug build flags])
1104 AC_MSG_RESULT($DEBUG_FLAGS)
1109 dnl Check for "unusual" flags to pass to the compiler while building.
1111 dnl GLIBCXX_ENABLE_CXX_FLAGS
1112 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1113 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1114 dnl Somehow this same set of flags must be passed when [re]building
1116 dnl --disable-cxx-flags passes nothing.
1117 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1118 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1119 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1120 dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags)
1121 dnl If "default flags" is an empty string (or "none"), the effect is
1122 dnl the same as --disable or --enable=no.
1123 AC_DEFUN(GLIBCXX_ENABLE_CXX_FLAGS, [dnl
1124 define([GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1125 AC_MSG_CHECKING([for extra compiler flags for building])
1126 AC_ARG_ENABLE(cxx_flags,
1127 changequote(<<, >>)dnl
1128 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1129 [default=>>GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT],
1130 changequote([, ])dnl
1131 [case "x$enable_cxx_flags" in
1133 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1135 enable_cxx_flags='' ;;
1137 enable_cxx_flags="$enableval" ;;
1139 enable_cxx_flags=GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT)
1141 dnl Run through flags (either default or command-line) and set anything
1142 dnl extra (e.g., #defines) that must accompany particular g++ options.
1143 if test -n "$enable_cxx_flags"; then
1144 for f in $enable_cxx_flags; do
1148 *) # and we're trying to pass /what/ exactly?
1149 AC_MSG_ERROR([compiler flags start with a -]) ;;
1153 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1154 AC_MSG_RESULT($EXTRA_CXX_FLAGS)
1155 AC_SUBST(EXTRA_CXX_FLAGS)
1160 dnl Check for which locale library to use: gnu or generic.
1162 dnl GLIBCXX_ENABLE_CLOCALE
1163 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1164 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1166 dnl default is generic
1168 AC_DEFUN(GLIBCXX_ENABLE_CLOCALE, [
1169 AC_MSG_CHECKING([for clocale to use])
1170 AC_ARG_ENABLE(clocale,
1171 [ --enable-clocale enable model for target locale package.
1172 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1174 if test x$enable_clocale = xno; then
1179 enable_clocale_flag=$enable_clocale
1181 dnl Probe for locale support if no specific model is specified.
1182 dnl Default to "generic"
1183 if test x$enable_clocale_flag = xno; then
1184 case x${target_os} in
1186 AC_EGREP_CPP([_GLIBCXX_ok], [
1187 #include <features.h>
1188 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1191 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1193 # Test for bugs early in glibc-2.2.x series
1194 if test x$enable_clocale_flag = xgnu; then
1196 #define _GNU_SOURCE 1
1199 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
1200 extern __typeof(newlocale) __newlocale;
1201 extern __typeof(duplocale) __duplocale;
1202 extern __typeof(strcoll_l) __strcoll_l;
1206 const char __one[] = "Äuglein Augmen";
1207 const char __two[] = "Äuglein";
1212 loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1213 loc_dup = __duplocale(loc);
1214 i = __strcoll_l(__one, __two, loc);
1215 j = __strcoll_l(__one, __two, loc_dup);
1219 [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1220 [enable_clocale_flag=generic])
1223 # ... at some point put __strxfrm_l tests in as well.
1226 enable_clocale_flag=generic
1231 dnl Deal with gettext issues.
1233 [ --enable-nls use Native Language Support (default)],
1237 dnl Set configure bits for specified locale package
1238 case x${enable_clocale_flag} in
1240 AC_MSG_RESULT(generic)
1242 CLOCALE_H=config/locale/generic/c_locale.h
1243 CLOCALE_CC=config/locale/generic/c_locale.cc
1244 CCODECVT_H=config/locale/generic/codecvt_specializations.h
1245 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1246 CCOLLATE_CC=config/locale/generic/collate_members.cc
1247 CCTYPE_CC=config/locale/generic/ctype_members.cc
1248 CMESSAGES_H=config/locale/generic/messages_members.h
1249 CMESSAGES_CC=config/locale/generic/messages_members.cc
1250 CMONEY_CC=config/locale/generic/monetary_members.cc
1251 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1252 CTIME_H=config/locale/generic/time_members.h
1253 CTIME_CC=config/locale/generic/time_members.cc
1254 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1259 # Declare intention to use gettext, and add support for specific
1261 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1264 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1265 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1266 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1269 # Export the build objects.
1270 for ling in $ALL_LINGUAS; do \
1271 glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \
1272 glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \
1274 AC_SUBST(glibcxx_MOFILES)
1275 AC_SUBST(glibcxx_POFILES)
1277 CLOCALE_H=config/locale/gnu/c_locale.h
1278 CLOCALE_CC=config/locale/gnu/c_locale.cc
1279 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1280 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
1281 CCOLLATE_CC=config/locale/gnu/collate_members.cc
1282 CCTYPE_CC=config/locale/gnu/ctype_members.cc
1283 CMESSAGES_H=config/locale/gnu/messages_members.h
1284 CMESSAGES_CC=config/locale/gnu/messages_members.cc
1285 CMONEY_CC=config/locale/gnu/monetary_members.cc
1286 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1287 CTIME_H=config/locale/gnu/time_members.h
1288 CTIME_CC=config/locale/gnu/time_members.cc
1289 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
1292 AC_MSG_RESULT(IEEE 1003.1)
1294 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1295 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1296 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1297 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1298 CCOLLATE_CC=config/locale/generic/collate_members.cc
1299 CCTYPE_CC=config/locale/generic/ctype_members.cc
1300 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1301 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1302 CMONEY_CC=config/locale/generic/monetary_members.cc
1303 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1304 CTIME_H=config/locale/generic/time_members.h
1305 CTIME_CC=config/locale/generic/time_members.cc
1306 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1309 echo "$enable_clocale is an unknown locale package" 1>&2
1314 # This is where the testsuite looks for locale catalogs, using the
1315 # -DLOCALEDIR define during testsuite compilation.
1316 glibcxx_localedir=${glibcxx_builddir}/po/share/locale
1317 AC_SUBST(glibcxx_localedir)
1319 # A standalone libintl (e.g., GNU libintl) may be in use.
1320 if test $USE_NLS = yes; then
1321 AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no)
1322 AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no)
1324 if test $USE_NLS = yes; then
1325 AC_DEFINE(_GLIBCXX_USE_NLS)
1330 AC_SUBST(CCODECVT_H)
1331 AC_SUBST(CMESSAGES_H)
1332 AC_SUBST(CCODECVT_CC)
1333 AC_SUBST(CCOLLATE_CC)
1335 AC_SUBST(CMESSAGES_CC)
1337 AC_SUBST(CNUMERIC_CC)
1340 AC_SUBST(CLOCALE_CC)
1341 AC_SUBST(CLOCALE_INTERNAL_H)
1346 dnl Check for which I/O library to use: stdio, or something specific.
1348 dnl GLIBCXX_ENABLE_CSTDIO
1350 dnl default is stdio
1352 AC_DEFUN(GLIBCXX_ENABLE_CSTDIO, [
1353 AC_MSG_CHECKING([for cstdio to use])
1354 AC_ARG_ENABLE(cstdio,
1355 [ --enable-cstdio enable stdio for target io package.
1356 --enable-cstdio=LIB use LIB target-specific io package. [default=stdio]
1358 if test x$enable_cstdio = xno; then
1361 enable_cstdio=stdio)
1363 enable_cstdio_flag=$enable_cstdio
1365 dnl Check if a valid I/O package
1366 case x${enable_cstdio_flag} in
1367 xstdio | x | xno | xnone | xyes)
1369 CSTDIO_H=config/io/c_io_stdio.h
1370 BASIC_FILE_H=config/io/basic_file_stdio.h
1371 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1372 AC_MSG_RESULT(stdio)
1375 echo "$enable_cstdio is an unknown io package" 1>&2
1380 dnl Set directory for fpos.h
1381 FPOS_H=$fpos_include_dir
1385 AC_SUBST(BASIC_FILE_H)
1386 AC_SUBST(BASIC_FILE_CC)
1391 dnl Check to see if building and using a C++ precompiled header can be done.
1393 dnl GLIBCXX_ENABLE_PCH
1395 dnl --enable-libstdcxx-pch=yes
1396 dnl default, this shows intent to use stdc++.h.gch If it looks like it
1397 dnl may work, after some light-hearted attempts to puzzle out compiler
1398 dnl support, flip bits on in include/Makefile.am
1400 dnl --disable-libstdcxx-pch
1401 dnl turns off attempts to use or build stdc++.h.gch.
1403 AC_DEFUN(GLIBCXX_ENABLE_PCH, [dnl
1404 define([GLIBCXX_ENABLE_PCH_DEFAULT], ifelse($1,,, $1))dnl
1405 AC_ARG_ENABLE(libstdcxx_pch,
1406 changequote(<<, >>)dnl
1407 << --enable-libstdcxx-pch build pre-compiled libstdc++ includes [default=>>GLIBCXX_ENABLE_PCH_DEFAULT],
1408 changequote([, ])dnl
1409 [case ${enableval} in
1410 yes) enable_libstdcxx_pch=yes ;;
1411 no) enable_libstdcxx_pch=no ;;
1412 *) AC_MSG_ERROR([Unknown argument to enable/disable PCH]) ;;
1414 enable_libstdcxx_pch=GLIBCXX_ENABLE_PCH_DEFAULT)dnl
1416 if test x$enable_libstdcxx_pch = xyes; then
1417 AC_CACHE_CHECK([for pch support], [libstdcxx_cv_pch_comp],[
1420 ac_save_CXXFLAGS=$CXXFLAGS
1421 CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
1422 echo '#include <math.h>' > conftest.h
1423 if ${CXX-g++} $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \
1424 -o conftest.h.gch 1>&5 2>&1 &&
1425 echo '#error "pch failed"' > conftest.h &&
1426 echo '#include "conftest.h"' > conftest.C &&
1427 ${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.C 1>&5 2>&1 ; then
1428 libstdcxx_cv_pch_comp=yes
1430 libstdcxx_cv_pch_comp=no
1433 CXXFLAGS=$ac_save_CXXFLAGS
1438 if test x"$enable_libstdcxx_pch" = xyes &&
1439 test x"$libstdcxx_cv_pch_comp" = xno; then
1440 enable_libstdcxx_pch=no
1443 AC_MSG_CHECKING([for enabled PCH])
1444 AC_MSG_RESULT([$enable_libstdcxx_pch])
1446 AM_CONDITIONAL(GLIBCXX_BUILD_PCH, test "$enable_libstdcxx_pch" = yes)
1447 if test "$enable_libstdcxx_pch" = yes; then
1448 glibcxx_PCHFLAGS="-include bits/stdc++.h"
1452 AC_SUBST(glibcxx_PCHFLAGS)
1456 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1457 dnl We must stage the required headers so that they will be installed
1458 dnl with the library (unlike libgcc, the STL implementation is provided
1459 dnl solely within headers). Since we must not inject random user-space
1460 dnl macro names into user-provided C++ code, we first stage into <file>-in
1461 dnl and process to <file> with an output command. The reason for a two-
1462 dnl stage process here is to correctly handle $srcdir!=$objdir without
1463 dnl having to write complex code (the sed commands to clean the macro
1464 dnl namespace are complex and fragile enough as it is). We must also
1465 dnl add a relative path so that -I- is supported properly.
1467 AC_DEFUN(GLIBCXX_ENABLE_THREADS, [
1468 AC_MSG_CHECKING([for thread model used by GCC])
1469 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1470 AC_MSG_RESULT([$target_thread_file])
1472 if test $target_thread_file != single; then
1473 AC_DEFINE(HAVE_GTHR_DEFAULT)
1474 AC_DEFINE(_GLIBCXX_SUPPORTS_WEAK, __GXX_WEAK__)
1477 glibcxx_thread_h=gthr-$target_thread_file.h
1478 AC_SUBST(glibcxx_thread_h)
1483 dnl Check for exception handling support. If an explicit enable/disable
1484 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1485 dnl target may or may not support call frame exceptions.
1487 dnl GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
1488 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1489 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1491 dnl Define _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it.
1493 AC_DEFUN(GLIBCXX_ENABLE_SJLJ_EXCEPTIONS, [
1494 AC_MSG_CHECKING([for exception model to use])
1497 AC_ARG_ENABLE(sjlj-exceptions,
1498 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1500 [dnl Botheration. Now we've got to detect the exception model.
1501 dnl Link tests against libgcc.a are problematic since -- at least
1502 dnl as of this writing -- we've not been given proper -L bits for
1503 dnl single-tree newlib and libgloss.
1505 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1506 dnl conftest files before we got a change to grep them first.
1507 cat > conftest.$ac_ext << EOF
1508 [#]line __oline__ "configure"
1517 old_CXXFLAGS="$CXXFLAGS"
1519 if AC_TRY_EVAL(ac_compile); then
1520 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1521 enable_sjlj_exceptions=yes
1522 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1523 enable_sjlj_exceptions=no
1526 CXXFLAGS="$old_CXXFLAGS"
1528 if test x$enable_sjlj_exceptions = xyes; then
1529 AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
1530 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1531 ac_exception_model_name=sjlj
1532 elif test x$enable_sjlj_exceptions = xno; then
1533 ac_exception_model_name="call frame"
1535 AC_MSG_ERROR([unable to detect exception model])
1538 AC_MSG_RESULT($ac_exception_model_name)
1543 dnl Check for libunwind exception handling support. If enabled then
1544 dnl we assume that the _Unwind_* functions that make up the Unwind ABI
1545 dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by
1546 dnl libunwind instead of libgcc and that libstdc++ has a dependency
1547 dnl on libunwind as well as libgcc.
1549 dnl GLIBCXX_ENABLE_LIBUNWIND_EXCEPTIONS
1550 dnl --enable-libunwind-exceptions forces the use of libunwind.
1551 dnl --disable-libunwind-exceptions assumes there is no libunwind.
1553 dnl Define _GLIBCXX_LIBUNWIND_EXCEPTIONS if requested.
1555 AC_DEFUN(GLIBCXX_ENABLE_LIBUNWIND_EXCEPTIONS, [
1556 AC_MSG_CHECKING([for use of libunwind])
1557 AC_ARG_ENABLE(libunwind-exceptions,
1558 [ --enable-libunwind-exceptions force use of libunwind for exceptions],
1559 use_libunwind_exceptions=$enableval,
1560 use_libunwind_exceptions=no)
1561 AC_MSG_RESULT($use_libunwind_exceptions)
1562 dnl Option parsed, now set things appropriately
1563 if test x"$use_libunwind_exceptions" = xyes; then
1564 LIBUNWIND_FLAG="-lunwind"
1568 AC_SUBST(LIBUNWIND_FLAG)
1572 dnl Check for ISO/IEC 9899:1999 "C99" support.
1574 dnl GLIBCXX_ENABLE_C99
1575 dnl --enable-c99 defines _GLIBCXX_USE_C99
1576 dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined
1577 dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)]
1578 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1579 dnl defaults to `no'.
1580 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1582 dnl GLIBCXX_ENABLE_C99
1583 AC_DEFUN(GLIBCXX_ENABLE_C99, [dnl
1584 define([GLIBCXX_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1587 changequote(<<, >>)dnl
1588 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCXX_ENABLE_C99_DEFAULT],
1589 changequote([, ])dnl
1590 [case "$enableval" in
1591 yes) enable_c99=yes ;;
1592 no) enable_c99=no ;;
1593 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1595 enable_c99=GLIBCXX_ENABLE_C99_DEFAULT)dnl
1600 # Check for the existence of <math.h> functions used if C99 is enabled.
1602 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1603 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1604 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1605 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1606 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1607 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1608 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1609 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1610 AC_TRY_COMPILE([#include <math.h>],
1611 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1612 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1613 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1614 AC_TRY_COMPILE([#include <math.h>],
1615 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1616 AC_TRY_COMPILE([#include <math.h>],
1617 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1618 AC_MSG_RESULT($ac_c99_math)
1620 # Check for the existence in <stdio.h> of vscanf, et. al.
1622 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1623 AC_TRY_COMPILE([#include <stdio.h>],
1624 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1625 AC_TRY_COMPILE([#include <stdio.h>
1627 void foo(char* fmt, ...)
1628 {va_list args; va_start(args, fmt);
1629 vfscanf(stderr, "%i", args);}],
1630 [],, [ac_c99_stdio=no])
1631 AC_TRY_COMPILE([#include <stdio.h>
1633 void foo(char* fmt, ...)
1634 {va_list args; va_start(args, fmt);
1635 vscanf("%i", args);}],
1636 [],, [ac_c99_stdio=no])
1637 AC_TRY_COMPILE([#include <stdio.h>
1639 void foo(char* fmt, ...)
1640 {va_list args; va_start(args, fmt);
1641 vsnprintf(fmt, 0, "%i", args);}],
1642 [],, [ac_c99_stdio=no])
1643 AC_TRY_COMPILE([#include <stdio.h>
1645 void foo(char* fmt, ...)
1646 {va_list args; va_start(args, fmt);
1647 vsscanf(fmt, "%i", args);}],
1648 [],, [ac_c99_stdio=no])
1649 AC_MSG_RESULT($ac_c99_stdio)
1651 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1653 AC_MSG_CHECKING([for lldiv_t declaration])
1654 AC_CACHE_VAL(ac_c99_lldiv_t, [
1655 AC_TRY_COMPILE([#include <stdlib.h>],
1657 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1659 AC_MSG_RESULT($ac_c99_lldiv_t)
1661 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1662 AC_TRY_COMPILE([#include <stdlib.h>],
1663 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1664 AC_TRY_COMPILE([#include <stdlib.h>],
1665 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1666 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1667 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1668 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1669 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1670 if test x"$ac_c99_lldiv_t" = x"no"; then
1673 AC_MSG_RESULT($ac_c99_stdlib)
1675 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1676 # XXX the wchar.h checks should be rolled into the general C99 bits.
1678 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1679 AC_TRY_COMPILE([#include <wchar.h>],
1680 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1681 AC_TRY_COMPILE([#include <wchar.h>],
1682 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1683 AC_TRY_COMPILE([#include <wchar.h>],
1684 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1685 AC_MSG_RESULT($ac_c99_wchar)
1687 AC_MSG_CHECKING([for enabled ISO C99 support])
1688 if test x"$ac_c99_math" = x"no" ||
1689 test x"$ac_c99_stdio" = x"no" ||
1690 test x"$ac_c99_stdlib" = x"no" ||
1691 test x"$ac_c99_wchar" = x"no"; then
1694 AC_MSG_RESULT($enable_c99)
1696 # Option parsed, now set things appropriately
1697 if test x"$enable_c99" = x"yes"; then
1698 AC_DEFINE(_GLIBCXX_USE_C99)
1706 dnl Check for template specializations for the 'long long' type extension.
1707 dnl The result determines only whether 'long long' I/O is enabled; things
1708 dnl like numeric_limits<> specializations are always available.
1710 dnl GLIBCXX_ENABLE_LONG_LONG
1711 dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG
1712 dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined
1713 dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)]
1714 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1715 dnl defaults to `no'.
1716 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1718 dnl GLIBCXX_ENABLE_LONG_LONG
1719 AC_DEFUN(GLIBCXX_ENABLE_LONG_LONG, [dnl
1720 define([GLIBCXX_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1722 AC_ARG_ENABLE(long-long,
1723 changequote(<<, >>)dnl
1724 <<--enable-long-long turns on 'long long' [default=>>GLIBCXX_ENABLE_LONG_LONG_DEFAULT],
1725 changequote([, ])dnl
1726 [case "$enableval" in
1727 yes) enable_long_long=yes ;;
1728 no) enable_long_long=no ;;
1729 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1731 enable_long_long=GLIBCXX_ENABLE_LONG_LONG_DEFAULT)dnl
1736 AC_MSG_CHECKING([for enabled long long I/O support])
1737 # iostreams require strtoll, strtoull to compile
1738 AC_TRY_COMPILE([#include <stdlib.h>],
1739 [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1740 AC_TRY_COMPILE([#include <stdlib.h>],
1741 [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1743 # Option parsed, now set things appropriately
1744 if test x"$enable_long_long" = xyes; then
1745 AC_DEFINE(_GLIBCXX_USE_LONG_LONG)
1747 AC_MSG_RESULT($enable_long_long)
1754 dnl Check for what type of C headers to use.
1756 dnl GLIBCXX_ENABLE_CHEADERS
1757 dnl --enable-cheaders= [does stuff].
1758 dnl --disable-cheaders [does not do anything, really].
1759 dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)]
1760 dnl Where DEFAULT is either `c' or `c_std'.
1761 dnl If ommitted, it defaults to `c_std'.
1762 AC_DEFUN(GLIBCXX_ENABLE_CHEADERS, [dnl
1763 define([GLIBCXX_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1764 AC_MSG_CHECKING([for c header strategy to use])
1765 AC_ARG_ENABLE(cheaders,
1766 changequote(<<, >>)dnl
1767 << --enable-cheaders=MODEL construct "C" header files for g++ [default=>>GLIBCXX_ENABLE_CHEADERS_DEFAULT],
1769 [case "$enableval" in
1774 enable_cheaders=c_std
1776 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1779 enable_cheaders=GLIBCXX_ENABLE_CHEADERS_DEFAULT)
1780 AC_MSG_RESULT($enable_cheaders)
1782 dnl Option parsed, now set things appropriately
1783 case "$enable_cheaders" in
1785 C_INCLUDE_DIR='${glibcxx_srcdir}/include/c_std'
1788 C_INCLUDE_DIR='${glibcxx_srcdir}/include/c'
1792 AC_SUBST(C_INCLUDE_DIR)
1793 AM_CONDITIONAL(GLIBCXX_C_HEADERS_C, test "$enable_cheaders" = c)
1794 AM_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test "$enable_cheaders" = c_std)
1795 AM_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes)
1800 dnl Check for wide character support. Has the same effect as the option
1801 dnl in gcc's configure, but in a form that autoconf can mess with.
1803 dnl GLIBCXX_ENABLE_C_MBCHAR
1804 dnl --enable-c-mbchar requests all the wchar_t stuff.
1805 dnl --disable-c-mbchar doesn't.
1806 dnl + Usage: GLIBCXX_ENABLE_C_MBCHAR[(DEFAULT)]
1807 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1808 dnl defaults to `no'.
1809 AC_DEFUN(GLIBCXX_ENABLE_C_MBCHAR, [dnl
1810 define([GLIBCXX_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1811 AC_ARG_ENABLE(c-mbchar,
1812 changequote(<<, >>)dnl
1813 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCXX_ENABLE_C_MBCHAR_DEFAULT],
1814 changequote([, ])dnl
1815 [case "$enableval" in
1816 yes) enable_c_mbchar=yes ;;
1817 no) enable_c_mbchar=no ;;
1818 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1820 enable_c_mbchar=GLIBCXX_ENABLE_C_MBCHAR_DEFAULT)dnl
1821 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1826 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1828 dnl TOPLEVEL_INCLUDES
1829 dnl LIBMATH_INCLUDES
1830 dnl LIBSUPCXX_INCLUDES
1832 dnl GLIBCXX_EXPORT_INCLUDES
1833 AC_DEFUN(GLIBCXX_EXPORT_INCLUDES, [
1834 # Root level of the build directory include sources.
1835 GLIBCXX_INCLUDES="-I${glibcxx_builddir}/include/${target_alias} -I${glibcxx_builddir}/include"
1837 # Passed down for canadian crosses.
1838 if test x"$CANADIAN" = xyes; then
1839 TOPLEVEL_INCLUDES='-I$(includedir)'
1842 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1844 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1846 # Now, export this to all the little Makefiles....
1847 AC_SUBST(GLIBCXX_INCLUDES)
1848 AC_SUBST(TOPLEVEL_INCLUDES)
1849 AC_SUBST(LIBMATH_INCLUDES)
1850 AC_SUBST(LIBSUPCXX_INCLUDES)
1855 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1857 AC_DEFUN(GLIBCXX_EXPORT_FLAGS, [
1858 # Optimization flags that are probably a good idea for thrill-seekers. Just
1859 # uncomment the lines below and make, everything else is ready to go...
1860 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1862 AC_SUBST(OPTIMIZE_CXXFLAGS)
1864 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings'
1865 AC_SUBST(WARN_FLAGS)
1869 dnl GLIBCXX_EXPORT_INSTALL_INFO
1870 dnl calculates gxx_install_dir
1871 dnl exports glibcxx_toolexecdir
1872 dnl exports glibcxx_toolexeclibdir
1873 dnl exports glibcxx_prefixdir
1875 dnl Assumes cross_compiling bits already done, and with_cross_host in
1878 dnl GLIBCXX_EXPORT_INSTALL_INFO
1879 AC_DEFUN(GLIBCXX_EXPORT_INSTALL_INFO, [
1880 # Assumes glibcxx_builddir, glibcxx_srcdir are alreay set up and
1881 # exported correctly in GLIBCXX_CONFIGURE.
1882 glibcxx_toolexecdir=no
1883 glibcxx_toolexeclibdir=no
1884 glibcxx_prefixdir=${prefix}
1886 # Process the option --with-gxx-include-dir=<path to include-files directory>
1887 AC_MSG_CHECKING([for --with-gxx-include-dir])
1888 AC_ARG_WITH(gxx-include-dir,
1889 [ --with-gxx-include-dir the installation directory for include files],
1890 [case "${withval}" in
1892 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1899 gxx_include_dir=${withval}
1901 esac], [gxx_include_dir=no])
1902 AC_MSG_RESULT($gxx_include_dir)
1904 # Process the option "--enable-version-specific-runtime-libs"
1905 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1906 AC_ARG_ENABLE(version-specific-runtime-libs,
1907 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1908 [case "$enableval" in
1909 yes) version_specific_libs=yes ;;
1910 no) version_specific_libs=no ;;
1911 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
1913 version_specific_libs=no)dnl
1914 # Option set, now we can test it.
1915 AC_MSG_RESULT($version_specific_libs)
1917 # Default case for install directory for include files.
1918 if test $version_specific_libs = no && test $gxx_include_dir = no; then
1919 gxx_include_dir='$(prefix)'/include/c++/${gcc_version}
1922 # Version-specific runtime libs processing.
1923 if test $version_specific_libs = yes; then
1924 # Need the gcc compiler version to know where to install libraries
1925 # and header files if --enable-version-specific-runtime-libs option
1927 if test x"$gxx_include_dir" = x"no"; then
1928 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++
1930 glibcxx_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1931 glibcxx_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1934 # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir
1935 # Install a library built with a cross compiler in tooldir, not libdir.
1936 if test x"$glibcxx_toolexecdir" = x"no"; then
1937 if test -n "$with_cross_host" &&
1938 test x"$with_cross_host" != x"no"; then
1939 glibcxx_toolexecdir='$(exec_prefix)/$(target_alias)'
1940 glibcxx_toolexeclibdir='$(toolexecdir)/lib'
1942 glibcxx_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1943 glibcxx_toolexeclibdir='$(libdir)'
1945 multi_os_directory=`$CC -print-multi-os-directory`
1946 case $multi_os_directory in
1947 .) ;; # Avoid trailing /.
1948 *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;;
1952 AC_MSG_CHECKING([for install location])
1953 AC_MSG_RESULT($gxx_include_dir)
1955 AC_SUBST(glibcxx_prefixdir)
1956 AC_SUBST(gxx_include_dir)
1957 AC_SUBST(glibcxx_toolexecdir)
1958 AC_SUBST(glibcxx_toolexeclibdir)
1962 # Check for functions in math library.
1963 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1965 # This file can be copied and used freely without restrictions. It can
1966 # be used in projects which are not available under the GNU Public License
1967 # but which still want to provide support for the GNU gettext functionality.
1968 # Please note that the actual code is *not* freely available.
1972 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1973 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1974 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
1977 dnl This macro searches for a GNU version of make. If a match is found, the
1978 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1979 dnl set to "#". This is useful for including a special features in a Makefile,
1980 dnl which cannot be handled by other versions of make. The variable
1981 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1982 dnl the empty string otherwise.
1984 dnl Here is an example of its use:
1986 dnl Makefile.in might contain:
1988 dnl # A failsafe way of putting a dependency rule into a makefile
1990 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1992 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1993 dnl @ifGNUmake@ include $(DEPEND)
1994 dnl @ifGNUmake@ endif
1996 dnl Then configure.in would normally contain:
1998 dnl CHECK_GNU_MAKE()
1999 dnl AC_OUTPUT(Makefile)
2001 dnl Then perhaps to cause gnu make to override any other make, we could do
2002 dnl something like this (note that GNU make always looks for GNUmakefile first):
2004 dnl if ! test x$_cv_gnu_make_command = x ; then
2005 dnl mv Makefile GNUmakefile
2006 dnl echo .DEFAULT: > Makefile ;
2007 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
2010 dnl Then, if any (well almost any) other make is called, and GNU make also
2011 dnl exists, then the other make wraps the GNU make.
2013 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
2014 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
2016 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
2017 dnl #### GLIBCXX_ to the macro name; adding the :-make fallback in the
2018 dnl #### conditional's subshell (" --version" is not a command), using a
2019 dnl #### different option to grep(1).
2021 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
2022 dnl #### ${MAKE:-make}).
2025 GLIBCXX_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
2026 _cv_gnu_make_command='' ;
2027 dnl Search all the common names for GNU make
2028 for a in "${MAKE-make}" make gmake gnumake ; do
2029 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
2031 _cv_gnu_make_command=$a ;
2036 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
2037 dnl string, '#' otherwise
2038 if test "x$_cv_gnu_make_command" != "x" ; then
2047 dnl Check for headers for, and arguments to, the setrlimit() function.
2048 dnl Used only in testsuite_hooks.h.
2049 AC_DEFUN(GLIBCXX_CHECK_SETRLIMIT_ancilliary, [
2050 AC_TRY_COMPILE([#include <unistd.h>
2051 #include <sys/time.h>
2052 #include <sys/resource.h>
2053 ], [ int f = RLIMIT_$1 ; ],
2054 [glibcxx_mresult=1], [glibcxx_mresult=0])
2055 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcxx_mresult,
2056 [Only used in build directory testsuite_hooks.h.])
2058 AC_DEFUN(GLIBCXX_CHECK_SETRLIMIT, [
2059 setrlimit_have_headers=yes
2060 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
2062 setrlimit_have_headers=no)
2063 # If don't have the headers, then we can't run the tests now, and we
2064 # won't be seeing any of these during testsuite compilation.
2065 if test $setrlimit_have_headers = yes; then
2066 # Can't do these in a loop, else the resulting syntax is wrong.
2067 GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA)
2068 GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS)
2069 GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM)
2070 GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS)
2072 # Check for rlimit, setrlimit.
2073 AC_CACHE_VAL(ac_setrlimit, [
2074 AC_TRY_COMPILE([#include <unistd.h>
2075 #include <sys/time.h>
2076 #include <sys/resource.h>
2078 [ struct rlimit r; setrlimit(0, &r);],
2079 [ac_setrlimit=yes], [ac_setrlimit=no])
2083 AC_MSG_CHECKING([for testsuite memory limit support])
2084 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
2086 AC_DEFINE(_GLIBCXX_MEM_LIMITS)
2090 AC_MSG_RESULT($ac_mem_limits)
2095 dnl Does any necessary configuration of the testsuite directory. Generates
2096 dnl the testsuite_hooks.h header.
2098 dnl GLIBCXX_CONFIGURE_TESTSUITE [no args]
2099 AC_DEFUN(GLIBCXX_CONFIGURE_TESTSUITE, [
2101 if test x"$GLIBCXX_IS_CROSS_COMPILING" = xfalse; then
2102 # Do checks for memory limit functions.
2103 GLIBCXX_CHECK_SETRLIMIT
2105 # Look for setenv, so that extended locale tests can be performed.
2106 GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
2109 # Export file names for ABI checking.
2110 baseline_dir="${glibcxx_srcdir}/config/abi/${abi_baseline_pair}\$(MULTISUBDIR)"
2111 AC_SUBST(baseline_dir)
2113 # Determine if checking the ABI is desirable.
2114 if test x$enable_symvers = xno; then
2119 enable_abi_check=no ;;
2121 enable_abi_check=yes ;;
2125 AM_CONDITIONAL(GLIBCXX_TEST_WCHAR_T, test "$enable_wchar_t" = yes)
2126 AM_CONDITIONAL(GLIBCXX_TEST_ABI, test "$enable_abi_check" = yes)
2130 sinclude(../libtool.m4)
2131 dnl The lines below arrange for aclocal not to bring an installed
2132 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
2133 dnl add a definition of LIBTOOL to Makefile.in.
2134 ifelse(,,,[AC_SUBST(LIBTOOL)
2135 AC_DEFUN([AM_PROG_LIBTOOL])
2136 AC_DEFUN([AC_LIBTOOL_DLOPEN])
2137 AC_DEFUN([AC_PROG_LD])
2141 dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>.
2144 AC_DEFUN(GLIBCXX_CHECK_S_ISREG_OR_S_IFREG, [
2145 AC_CACHE_VAL(glibcxx_cv_S_ISREG, [
2146 AC_TRY_LINK([#include <sys/stat.h>],
2147 [struct stat buffer; fstat(0, &buffer); S_ISREG(buffer.st_mode); ],
2148 [glibcxx_cv_S_ISREG=yes],
2149 [glibcxx_cv_S_ISREG=no])
2151 AC_CACHE_VAL(glibcxx_cv_S_IFREG, [
2152 AC_TRY_LINK([#include <sys/stat.h>],
2153 [struct stat buffer; fstat(0, &buffer); S_IFREG & buffer.st_mode; ],
2154 [glibcxx_cv_S_IFREG=yes],
2155 [glibcxx_cv_S_IFREG=no])
2157 if test x$glibcxx_cv_S_ISREG = xyes; then
2158 AC_DEFINE(HAVE_S_ISREG)
2159 elif test x$glibcxx_cv_S_IFREG = xyes; then
2160 AC_DEFINE(HAVE_S_IFREG)
2165 dnl Check whether poll is available in <poll.h>.
2168 AC_DEFUN(GLIBCXX_CHECK_POLL, [
2169 AC_CACHE_VAL(glibcxx_cv_POLL, [
2170 AC_TRY_COMPILE([#include <poll.h>],
2171 [struct pollfd pfd[1]; pfd[0].events = POLLIN; poll(pfd, 1, 0); ],
2172 [glibcxx_cv_POLL=yes],
2173 [glibcxx_cv_POLL=no])
2175 if test x$glibcxx_cv_POLL = xyes; then
2176 AC_DEFINE(HAVE_POLL)
2181 dnl Check whether writev is available in <sys/uio.h>.
2184 AC_DEFUN(GLIBCXX_CHECK_WRITEV, [
2185 AC_CACHE_VAL(glibcxx_cv_WRITEV, [
2186 AC_TRY_COMPILE([#include <sys/uio.h>],
2187 [struct iovec iov[2]; writev(0, iov, 0); ],
2188 [glibcxx_cv_WRITEV=yes],
2189 [glibcxx_cv_WRITEV=no])
2191 if test x$glibcxx_cv_WRITEV = xyes; then
2192 AC_DEFINE(HAVE_WRITEV)
2197 # Check whether LC_MESSAGES is available in <locale.h>.
2198 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2200 # This file file be copied and used freely without restrictions. It can
2201 # be used in projects which are not available under the GNU Public License
2202 # but which still want to provide support for the GNU gettext functionality.
2203 # Please note that the actual code is *not* freely available.
2207 AC_DEFUN(AC_LC_MESSAGES, [
2208 AC_CHECK_HEADER(locale.h, [
2209 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
2210 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2211 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
2212 if test $ac_cv_val_LC_MESSAGES = yes; then
2213 AC_DEFINE(HAVE_LC_MESSAGES)
2220 dnl Check for whether the Boost-derived checks should be turned on.
2222 dnl GLIBCXX_ENABLE_CONCEPT_CHECKS
2223 dnl --enable-concept-checks turns them on.
2224 dnl --disable-concept-checks leaves them off.
2225 dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2226 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2227 dnl defaults to `no'.
2228 AC_DEFUN(GLIBCXX_ENABLE_CONCEPT_CHECKS, [dnl
2229 define([GLIBCXX_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
2230 AC_ARG_ENABLE(concept-checks,
2231 changequote(<<, >>)dnl
2232 << --enable-concept-checks use Boost-derived template checks [default=>>GLIBCXX_ENABLE_CONCEPT_CHECKS_DEFAULT],
2233 changequote([, ])dnl
2234 [case "$enableval" in
2235 yes) enable_concept_checks=yes ;;
2236 no) enable_concept_checks=no ;;
2237 *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
2239 enable_concept_checks=GLIBCXX_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
2240 dnl Option parsed, now set things appropriately
2241 if test x"$enable_concept_checks" = xyes; then
2242 AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS)
2248 dnl Add version tags to symbols in shared library (or not), additionally
2249 dnl marking other symbols as private/local (or not).
2251 dnl GLIBCXX_ENABLE_SYMVERS
2252 dnl --enable-symvers=style adds a version script to the linker call when
2253 dnl creating the shared library. The choice of version script is
2254 dnl controlled by 'style'.
2255 dnl --disable-symvers does not.
2256 dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)]
2257 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2258 dnl defaults to `no'. Passing `yes' tries to choose a default style
2259 dnl based on linker characteristics. Passing 'no' disables versioning.
2260 AC_DEFUN(GLIBCXX_ENABLE_SYMVERS, [dnl
2261 define([GLIBCXX_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl
2262 AC_ARG_ENABLE(symvers,
2263 changequote(<<, >>)dnl
2264 << --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCXX_ENABLE_SYMVERS_DEFAULT],
2265 changequote([, ])dnl
2266 [case "$enableval" in
2267 yes) enable_symvers=yes ;;
2268 no) enable_symvers=no ;;
2269 # other names here, just as sanity checks
2270 #gnu|sun|etcetera) enable_symvers=$enableval ;;
2271 gnu) enable_symvers=$enableval ;;
2272 *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;;
2274 enable_symvers=GLIBCXX_ENABLE_SYMVERS_DEFAULT)dnl
2276 # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we
2277 # don't know enough about $LD to do tricks...
2278 if test x$enable_shared = xno ||
2280 test x$glibcxx_gnu_ld_version = x; then
2284 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
2285 if test $enable_symvers != no; then
2286 AC_MSG_CHECKING([for shared libgcc])
2287 ac_save_CFLAGS="$CFLAGS"
2289 AC_TRY_LINK(, [return 0], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no)
2290 CFLAGS="$ac_save_CFLAGS"
2291 AC_MSG_RESULT($glibcxx_shared_libgcc)
2294 # For GNU ld, we need at least this version. The format is described in
2295 # GLIBCXX_CHECK_LINKER_FEATURES above.
2296 glibcxx_min_gnu_ld_version=21400
2298 # Check to see if unspecified "yes" value can win, given results above.
2299 # Change "yes" into either "no" or a style name.
2300 if test $enable_symvers = yes ; then
2301 if test $with_gnu_ld = yes &&
2302 test $glibcxx_shared_libgcc = yes ;
2304 if test $glibcxx_gnu_ld_version -ge $glibcxx_min_gnu_ld_version ; then
2307 # The right tools, the right setup, but too old. Fallbacks?
2308 AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for)
2309 AC_MSG_WARN(=== full symbol versioning support in this release of GCC.)
2310 AC_MSG_WARN(=== You would need to upgrade your binutils to version)
2311 AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.)
2312 AC_MSG_WARN([=== Symbol versioning will be disabled.])
2317 AC_MSG_WARN([=== You have requested some kind of symbol versioning, but])
2318 AC_MSG_WARN([=== either you are not using a supported linker, or you are])
2319 AC_MSG_WARN([=== not building a shared libgcc_s (which is required).])
2320 AC_MSG_WARN([=== Symbol versioning will be disabled.])
2325 dnl Everything parsed; figure out what file to use.
2326 case $enable_symvers in
2328 SYMVER_MAP=config/linker-map.dummy
2331 SYMVER_MAP=config/linker-map.gnu
2332 AC_DEFINE(_GLIBCXX_SYMVER)
2336 AC_SUBST(SYMVER_MAP)
2337 AC_SUBST(port_specific_symbol_files)
2338 AM_CONDITIONAL(GLIBCXX_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
2339 AC_MSG_CHECKING([versioning on shared library symbols])
2340 AC_MSG_RESULT($enable_symvers)
2344 # isc-posix.m4 serial 2 (gettext-0.11.2)
2345 dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
2346 dnl This file is free software, distributed under the terms of the GNU
2347 dnl General Public License. As a special exception to the GNU General
2348 dnl Public License, this file may be distributed as part of a program
2349 dnl that contains a configuration script generated by Autoconf, under
2350 dnl the same distribution terms as the rest of that program.
2352 # This file is not needed with autoconf-2.53 and newer. Remove it in 2005.
2354 # This test replaces the one in autoconf.
2355 # Currently this macro should have the same name as the autoconf macro
2356 # because gettext's gettext.m4 (distributed in the automake package)
2357 # still uses it. Otherwise, the use in gettext.m4 makes autoheader
2358 # give these diagnostics:
2359 # configure.in:556: AC_TRY_COMPILE was called before AC_ISC_POSIX
2360 # configure.in:556: AC_TRY_RUN was called before AC_ISC_POSIX
2362 undefine([AC_ISC_POSIX])
2364 AC_DEFUN([AC_ISC_POSIX],
2366 dnl This test replaces the obsolescent AC_ISC_POSIX kludge.
2367 AC_CHECK_LIB(cposix, strerror, [LIBS="$LIBS -lcposix"])
2371 # Add --enable-maintainer-mode option to configure.
2376 AC_DEFUN([AM_MAINTAINER_MODE],
2377 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2378 dnl maintainer-mode is disabled by default
2379 AC_ARG_ENABLE(maintainer-mode,
2380 [ --enable-maintainer-mode enable make rules and dependencies not useful
2381 (and sometimes confusing) to the casual installer],
2382 USE_MAINTAINER_MODE=$enableval,
2383 USE_MAINTAINER_MODE=no)
2384 AC_MSG_RESULT($USE_MAINTAINER_MODE)
2385 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
2386 MAINT=$MAINTAINER_MODE_TRUE
2391 # Define a conditional.
2393 AC_DEFUN([AM_CONDITIONAL],
2404 # Do all the work for Automake. This macro actually does too much --
2405 # some checks are only needed if your package does certain things.
2406 # But this isn't really a big deal.
2411 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
2413 AC_DEFUN([AM_INIT_AUTOMAKE],
2414 [AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
2415 AC_REQUIRE([AC_PROG_INSTALL])
2420 dnl test to see if srcdir already configured
2421 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
2422 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
2425 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
2426 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
2427 AC_REQUIRE([AM_SANITY_CHECK])
2428 AC_REQUIRE([AC_ARG_PROGRAM])
2429 dnl FIXME This is truly gross.
2430 missing_dir=`cd $ac_aux_dir && pwd`
2431 AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version}, $missing_dir)
2432 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
2433 AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version}, $missing_dir)
2434 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
2435 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
2436 AC_REQUIRE([AC_PROG_MAKE_SET])])
2438 # Copyright 2002 Free Software Foundation, Inc.
2440 # This program is free software; you can redistribute it and/or modify
2441 # it under the terms of the GNU General Public License as published by
2442 # the Free Software Foundation; either version 2, or (at your option)
2443 # any later version.
2445 # This program is distributed in the hope that it will be useful,
2446 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2447 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2448 # GNU General Public License for more details.
2450 # You should have received a copy of the GNU General Public License
2451 # along with this program; if not, write to the Free Software
2452 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2454 # AM_AUTOMAKE_VERSION(VERSION)
2455 # ----------------------------
2456 # Automake X.Y traces this macro to ensure aclocal.m4 has been
2457 # generated from the m4 files accompanying Automake X.Y.
2458 AC_DEFUN([AM_AUTOMAKE_VERSION],[am__api_version="1.4"])
2460 # AM_SET_CURRENT_AUTOMAKE_VERSION
2461 # -------------------------------
2462 # Call AM_AUTOMAKE_VERSION so it can be traced.
2463 # This function is AC_REQUIREd by AC_INIT_AUTOMAKE.
2464 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
2465 [AM_AUTOMAKE_VERSION([1.4-p6])])
2468 # Check to make sure that the build environment is sane.
2471 AC_DEFUN([AM_SANITY_CHECK],
2472 [AC_MSG_CHECKING([whether build environment is sane])
2475 echo timestamp > conftestfile
2476 # Do `set' in a subshell so we don't clobber the current shell's
2477 # arguments. Must try -L first in case configure is actually a
2478 # symlink; some systems play weird games with the mod time of symlinks
2479 # (eg FreeBSD returns the mod time of the symlink's containing
2482 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
2483 if test "[$]*" = "X"; then
2485 set X `ls -t $srcdir/configure conftestfile`
2487 if test "[$]*" != "X $srcdir/configure conftestfile" \
2488 && test "[$]*" != "X conftestfile $srcdir/configure"; then
2490 # If neither matched, then we have a broken ls. This can happen
2491 # if, for instance, CONFIG_SHELL is bash and it inherits a
2492 # broken ls alias from the environment. This has actually
2493 # happened. Such a system could not be considered "sane".
2494 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
2495 alias in your environment])
2498 test "[$]2" = conftestfile
2504 AC_MSG_ERROR([newly created file is older than distributed files!
2505 Check your system clock])
2508 AC_MSG_RESULT(yes)])
2510 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
2511 dnl The program must properly implement --version.
2512 AC_DEFUN([AM_MISSING_PROG],
2513 [AC_MSG_CHECKING(for working $2)
2514 # Run test in a subshell; some versions of sh will print an error if
2515 # an executable is not found, even if stderr is redirected.
2516 # Redirect stdin to placate older versions of autoconf. Sigh.
2517 if ($2 --version) < /dev/null > /dev/null 2>&1; then
2519 AC_MSG_RESULT(found)
2522 AC_MSG_RESULT(missing)
2526 # Like AC_CONFIG_HEADER, but automatically create stamp file.
2528 AC_DEFUN([AM_CONFIG_HEADER],
2530 AC_CONFIG_HEADER([$1])
2531 dnl When config.status generates a header, we must update the stamp-h file.
2532 dnl This file resides in the same directory as the config header
2533 dnl that is generated. We must strip everything past the first ":",
2534 dnl and everything past the last "/".
2535 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
2536 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
2537 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
2539 for am_file in <<$1>>; do
2540 case " <<$>>CONFIG_HEADERS " in
2541 *" <<$>>am_file "*<<)>>
2542 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
2545 am_indx=`expr "<<$>>am_indx" + 1`