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($ac_fdsections)
302 AC_SUBST(SECTION_FLAGS)
307 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
308 dnl the native linker is in use, all variables will be defined to something
309 dnl safe (like an empty string).
311 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
312 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
313 dnl Define LD, with_gnu_ld, and (possibly) glibcxx_gnu_ld_version as
314 dnl side-effects of testing.
316 dnl GLIBCXX_CHECK_LINKER_FEATURES
317 AC_DEFUN(GLIBCXX_CHECK_LINKER_FEATURES, [
318 # If we're not using GNU ld, then there's no point in even trying these
319 # tests. Check for that first. We should have already tested for gld
320 # by now (in libtool), but require it now just to be safe...
321 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
322 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
323 AC_REQUIRE([AC_PROG_LD])
325 # The name set by libtool depends on the version of libtool. Shame on us
326 # for depending on an impl detail, but c'est la vie. Older versions used
327 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
328 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
329 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
330 # set (hence we're using an older libtool), then set it.
331 if test x${with_gnu_ld+set} != xset; then
332 if test x${ac_cv_prog_gnu_ld+set} != xset; then
333 # We got through "ac_require(ac_prog_ld)" and still not set? Huh?
336 with_gnu_ld=$ac_cv_prog_gnu_ld
340 # Start by getting the version number. I think the libtool test already
341 # does some of this, but throws away the result.
343 ldver=`$LD --version 2>/dev/null | head -1 | \
344 sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
346 glibcxx_gnu_ld_version=`echo $ldver | \
347 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
350 if test "$with_gnu_ld" = "notbroken"; then
351 # GNU ld it is! Joy and bunny rabbits!
353 # All these tests are for C++; save the language and the compiler flags.
354 # Need to do this so that g++ won't try to link in libstdc++
355 ac_test_CFLAGS="${CFLAGS+set}"
356 ac_save_CFLAGS="$CFLAGS"
357 CFLAGS='-x c++ -Wl,--gc-sections'
359 # Check for -Wl,--gc-sections
360 # XXX This test is broken at the moment, as symbols required for
361 # linking are now in libsupc++ (not built yet.....). In addition,
362 # this test has cored on solaris in the past. In addition,
363 # --gc-sections doesn't really work at the moment (keeps on discarding
364 # used sections, first .eh_frame and now some of the glibc sections for
365 # iconv). Bzzzzt. Thanks for playing, maybe next time.
366 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
374 ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
375 if test "$ac_test_CFLAGS" = set; then
376 CFLAGS="$ac_save_CFLAGS"
378 # this is the suspicious part
381 if test "$ac_sectionLDflags" = "yes"; then
382 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
384 AC_MSG_RESULT($ac_sectionLDflags)
387 # Set linker optimization flags.
388 if test x"$with_gnu_ld" = x"yes"; then
389 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
392 AC_SUBST(SECTION_LDFLAGS)
393 AC_SUBST(OPT_LDFLAGS)
398 dnl Check to see if the (math function) argument passed is
399 dnl declared when using the c++ compiler
400 dnl ASSUMES argument is a math function with ONE parameter
402 dnl GLIBCXX_CHECK_MATH_DECL_1
403 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_1, [
404 AC_MSG_CHECKING([for $1 declaration])
405 if test x${glibcxx_cv_func_$1_use+set} != xset; then
406 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
409 AC_TRY_COMPILE([#include <math.h>
415 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
419 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
423 dnl Check to see if the (math function) argument passed is
424 dnl 1) declared when using the c++ compiler
425 dnl 2) has "C" linkage
426 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
428 dnl Define HAVE_CARGF etc if "cargf" is declared and links
430 dnl argument 1 is name of function to check
432 dnl ASSUMES argument is a math function with ONE parameter
434 dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1
435 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1, [
436 GLIBCXX_CHECK_MATH_DECL_1($1)
437 if test x$glibcxx_cv_func_$1_use = x"yes"; then
440 GLIBCXX_CHECK_MATH_DECL_1(_$1)
441 if test x$glibcxx_cv_func__$1_use = x"yes"; then
449 dnl Like GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
450 dnl of functions at once. It's an all-or-nothing check -- either
451 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
452 dnl Doing it this way saves significant configure time.
453 AC_DEFUN(GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1, [
454 AC_MSG_CHECKING([for $1 functions])
455 AC_CACHE_VAL(glibcxx_cv_func_$2_use, [
458 AC_TRY_COMPILE([#include <math.h>],
459 [ `for x in $3; do echo "$x (0);"; done` ],
460 [glibcxx_cv_func_$2_use=yes],
461 [glibcxx_cv_func_$2_use=no])
463 AC_MSG_RESULT($glibcxx_cv_func_$2_use)
464 if test x$glibcxx_cv_func_$2_use = x"yes"; then
470 dnl Check to see if the (math function) argument passed is
471 dnl declared when using the c++ compiler
472 dnl ASSUMES argument is a math function with TWO parameters
474 dnl GLIBCXX_CHECK_MATH_DECL_2
475 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_2, [
476 AC_MSG_CHECKING([for $1 declaration])
477 if test x${glibcxx_cv_func_$1_use+set} != xset; then
478 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
481 AC_TRY_COMPILE([#include <math.h>],
483 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
487 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
491 dnl Check to see if the (math function) argument passed is
492 dnl 1) declared when using the c++ compiler
493 dnl 2) has "C" linkage
495 dnl Define HAVE_CARGF etc if "cargf" is declared and links
497 dnl argument 1 is name of function to check
499 dnl ASSUMES argument is a math function with TWO parameters
501 dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2
502 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2, [
503 GLIBCXX_CHECK_MATH_DECL_2($1)
504 if test x$glibcxx_cv_func_$1_use = x"yes"; then
507 GLIBCXX_CHECK_MATH_DECL_2(_$1)
508 if test x$glibcxx_cv_func__$1_use = x"yes"; then
516 dnl Check to see if the (math function) argument passed is
517 dnl declared when using the c++ compiler
518 dnl ASSUMES argument is a math function with THREE parameters
520 dnl GLIBCXX_CHECK_MATH_DECL_3
521 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_3, [
522 AC_MSG_CHECKING([for $1 declaration])
523 if test x${glibcxx_cv_func_$1_use+set} != xset; then
524 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
527 AC_TRY_COMPILE([#include <math.h>],
529 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
533 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
537 dnl Check to see if the (math function) argument passed is
538 dnl 1) declared when using the c++ compiler
539 dnl 2) has "C" linkage
541 dnl Define HAVE_CARGF etc if "cargf" is declared and links
543 dnl argument 1 is name of function to check
545 dnl ASSUMES argument is a math function with THREE parameters
547 dnl GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3
548 AC_DEFUN(GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3, [
549 GLIBCXX_CHECK_MATH_DECL_3($1)
550 if test x$glibcxx_cv_func_$1_use = x"yes"; then
553 GLIBCXX_CHECK_MATH_DECL_3(_$1)
554 if test x$glibcxx_cv_func__$1_use = x"yes"; then
562 dnl Check to see if the (stdlib function) argument passed is
563 dnl 1) declared when using the c++ compiler
564 dnl 2) has "C" linkage
566 dnl argument 1 is name of function to check
568 dnl ASSUMES argument is a math function with TWO parameters
570 dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2
571 AC_DEFUN(GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
572 AC_MSG_CHECKING([for $1 declaration])
573 if test x${glibcxx_cv_func_$1_use+set} != xset; then
574 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
577 AC_TRY_COMPILE([#include <stdlib.h>],
579 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
583 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
584 if test x$glibcxx_cv_func_$1_use = x"yes"; then
591 dnl Check to see if the (stdlib function) argument passed is
592 dnl 1) declared when using the c++ compiler
593 dnl 2) has "C" linkage
595 dnl argument 1 is name of function to check
597 dnl ASSUMES argument is a function with THREE parameters
599 dnl GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3
600 AC_DEFUN(GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3, [
601 AC_MSG_CHECKING([for $1 declaration])
602 if test x${glibcxx_cv_func_$1_use+set} != xset; then
603 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
606 AC_TRY_COMPILE([#include <stdlib.h>],
608 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
612 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
613 if test x$glibcxx_cv_func_$1_use = x"yes"; then
619 dnl Because the builtins are picky picky picky about the arguments they take,
620 dnl do an explict linkage tests here.
621 dnl Check to see if the (math function) argument passed is
622 dnl 1) declared when using the c++ compiler
623 dnl 2) has "C" linkage
625 dnl Define HAVE_CARGF etc if "cargf" is declared and links
627 dnl argument 1 is name of function to check
629 dnl ASSUMES argument is a math function with ONE parameter
631 dnl GLIBCXX_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
632 AC_DEFUN(GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
633 AC_MSG_CHECKING([for $1 declaration])
634 if test x${glibcxx_cv_func_$1_use+set} != xset; then
635 AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
638 AC_TRY_COMPILE([#include <math.h>],
640 [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
644 AC_MSG_RESULT($glibcxx_cv_func_$1_use)
645 if test x$glibcxx_cv_func_$1_use = x"yes"; then
646 AC_MSG_CHECKING([for $1 linkage])
647 if test x${glibcxx_cv_func_$1_link+set} != xset; then
648 AC_CACHE_VAL(glibcxx_cv_func_$1_link, [
649 AC_TRY_LINK([#include <math.h>],
651 [glibcxx_cv_func_$1_link=yes], [glibcxx_cv_func_$1_link=no])
654 AC_MSG_RESULT($glibcxx_cv_func_$1_link)
655 if test x$glibcxx_cv_func_$1_link = x"yes"; then
656 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
657 AC_DEFINE_UNQUOTED(${ac_tr_func})
664 dnl Check to see what builtin math functions are supported
666 dnl check for __builtin_abs
667 dnl check for __builtin_fabsf
668 dnl check for __builtin_fabs
669 dnl check for __builtin_fabl
670 dnl check for __builtin_labs
671 dnl check for __builtin_sqrtf
672 dnl check for __builtin_sqrtl
673 dnl check for __builtin_sqrt
674 dnl check for __builtin_sinf
675 dnl check for __builtin_sin
676 dnl check for __builtin_sinl
677 dnl check for __builtin_cosf
678 dnl check for __builtin_cos
679 dnl check for __builtin_cosl
681 dnl GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT
682 AC_DEFUN(GLIBCXX_CHECK_BUILTIN_MATH_SUPPORT, [
683 dnl Test for builtin math functions.
684 dnl These are made in gcc/c-common.c
685 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
686 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
687 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
688 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
689 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
691 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
692 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
693 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
695 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
696 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
697 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
699 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
700 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
701 GLIBCXX_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
703 dnl There is, without a doubt, a more elegant way to have these
704 dnl names exported so that they won't be stripped out of acconfig.h by
705 dnl autoheader. I leave this as an exercise to somebody less frustrated
706 dnl than I.... please email the libstdc++ list if you can figure out a
707 dnl more elegant approach (see autoconf/acgen.m4 and specifically
708 dnl AC_CHECK_FUNC for things to steal.)
710 if test x$dummyvar = x"yes"; then
711 AC_DEFINE(HAVE___BUILTIN_ABS)
712 AC_DEFINE(HAVE___BUILTIN_LABS)
713 AC_DEFINE(HAVE___BUILTIN_COS)
714 AC_DEFINE(HAVE___BUILTIN_COSF)
715 AC_DEFINE(HAVE___BUILTIN_COSL)
716 AC_DEFINE(HAVE___BUILTIN_FABS)
717 AC_DEFINE(HAVE___BUILTIN_FABSF)
718 AC_DEFINE(HAVE___BUILTIN_FABSL)
719 AC_DEFINE(HAVE___BUILTIN_SIN)
720 AC_DEFINE(HAVE___BUILTIN_SINF)
721 AC_DEFINE(HAVE___BUILTIN_SINL)
722 AC_DEFINE(HAVE___BUILTIN_SQRT)
723 AC_DEFINE(HAVE___BUILTIN_SQRTF)
724 AC_DEFINE(HAVE___BUILTIN_SQRTL)
729 dnl Check to see what the underlying c library is like
730 dnl These checks need to do two things:
731 dnl 1) make sure the name is declared when using the c++ compiler
732 dnl 2) make sure the name has "C" linkage
733 dnl This might seem like overkill but experience has shown that it's not...
735 dnl Define HAVE_STRTOLD if "strtold" is declared and links
736 dnl Define HAVE_STRTOF if "strtof" is declared and links
737 dnl Define HAVE_DRAND48 if "drand48" is declared and links
739 dnl GLIBCXX_CHECK_STDLIB_SUPPORT
740 AC_DEFUN(GLIBCXX_CHECK_STDLIB_SUPPORT, [
741 ac_test_CXXFLAGS="${CXXFLAGS+set}"
742 ac_save_CXXFLAGS="$CXXFLAGS"
743 CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
745 GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
746 GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
747 AC_CHECK_FUNCS(drand48)
749 CXXFLAGS="$ac_save_CXXFLAGS"
753 dnl Check to see what the underlying c library or math library is like.
754 dnl These checks need to do two things:
755 dnl 1) make sure the name is declared when using the c++ compiler
756 dnl 2) make sure the name has "C" linkage
757 dnl This might seem like overkill but experience has shown that it's not...
759 dnl Define HAVE_CARGF etc if "cargf" is found.
761 dnl GLIBCXX_CHECK_MATH_SUPPORT
762 AC_DEFUN(GLIBCXX_CHECK_MATH_SUPPORT, [
763 ac_test_CXXFLAGS="${CXXFLAGS+set}"
764 ac_save_CXXFLAGS="$CXXFLAGS"
765 CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
768 AC_CHECK_LIB(m, sin, libm="-lm")
772 dnl Check to see if certain C math functions exist.
773 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
774 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
775 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
776 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
777 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
778 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
779 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
780 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
782 dnl Check to see if basic C math functions have float versions.
783 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
788 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
791 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
792 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
793 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
794 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
795 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
796 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
797 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
798 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
799 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
800 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
801 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
802 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
803 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
804 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
805 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
806 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
808 dnl Check to see if basic C math functions have long double versions.
809 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
814 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
817 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
818 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
819 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
820 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
821 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
822 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
823 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
824 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
825 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
826 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
827 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
828 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
829 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
830 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
831 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
832 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
833 GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
835 dnl Some runtimes have these functions with a preceding underscore. Please
836 dnl keep this sync'd with the one above. And if you add any new symbol,
837 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
838 dnl Check to see if certain C math functions exist.
840 dnl Check to see if basic C math functions have float versions.
841 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
843 _acosf _asinf _atanf \
845 _coshf _sinhf _tanhf)
846 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
850 dnl Check to see if basic C math functions have long double versions.
851 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
853 _acosl _asinl _atanl \
855 _coshl _sinhl _tanhl)
856 GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
861 CXXFLAGS="$ac_save_CXXFLAGS"
866 dnl Check to see if there is native support for complex
868 dnl Don't compile bits in math/* if native support exits.
870 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
872 dnl GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT
873 AC_DEFUN(GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT, [
874 dnl Check for complex versions of math functions of platform. This will
875 dnl always pass if libm is available, and fail if it isn't. If it is
876 dnl available, we assume we'll need it later, so add it to LIBS.
877 AC_CHECK_LIB(m, main)
878 AC_REPLACE_MATHFUNCS(nan copysignf)
880 dnl For __signbit to signbit conversions.
881 AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
882 AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
884 dnl Compile the long double complex functions only if the function
885 dnl provides the non-complex long double functions that are needed.
886 dnl Currently this includes copysignl, which should be
887 dnl cached from the GLIBCXX_CHECK_MATH_SUPPORT macro, above.
888 if test x$ac_cv_func_copysignl = x"yes"; then
889 AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
892 if test -n "$LIBMATHOBJS"; then
895 AC_SUBST(LIBMATHOBJS)
899 dnl Check to see what architecture and operating system we are compiling
900 dnl for. Also, if architecture- or OS-specific flags are required for
901 dnl compilation, pick them up here.
903 dnl GLIBCXX_CHECK_HOST
904 AC_DEFUN(GLIBCXX_CHECK_HOST, [
905 . [$]{glibcxx_basedir}/configure.host
906 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
907 AC_MSG_RESULT(OS config directory is $os_include_dir)
912 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
913 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
914 dnl must have been previously checked.)
916 dnl Define _GLIBCXX_USE_WCHAR_T if all the bits are found
917 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
919 dnl GLIBCXX_CHECK_WCHAR_T_SUPPORT
920 AC_DEFUN(GLIBCXX_CHECK_WCHAR_T_SUPPORT, [
921 dnl Wide characters disabled by default.
923 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
924 dnl others even if wchar_t support is not on.
925 AC_MSG_CHECKING([for mbstate_t])
926 AC_TRY_COMPILE([#include <wchar.h>],
927 [mbstate_t teststate;],
928 have_mbstate_t=yes, have_mbstate_t=no)
929 AC_MSG_RESULT($have_mbstate_t)
930 if test x"$have_mbstate_t" = xyes; then
931 AC_DEFINE(HAVE_MBSTATE_T)
934 dnl Sanity check for existence of ISO C99 headers for extended encoding.
935 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
936 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
938 dnl Only continue checking if the ISO C99 headers exist and support is on.
939 if test x"$ac_has_wchar_h" = xyes &&
940 test x"$ac_has_wctype_h" = xyes &&
941 test x"$enable_c_mbchar" != xno; then
943 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
944 dnl numeric_limits can instantiate type_traits<wchar_t>
945 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
946 AC_TRY_COMPILE([#include <wchar.h>],
947 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
948 has_wchar_minmax=yes, has_wchar_minmax=no)
949 AC_MSG_RESULT($has_wchar_minmax)
951 dnl Test wchar.h for WEOF, which is what we use to determine whether
952 dnl to specialize for char_traits<wchar_t> or not.
953 AC_MSG_CHECKING([for WEOF])
956 #include <stddef.h>],
958 has_weof=yes, has_weof=no)
959 AC_MSG_RESULT($has_weof)
961 dnl Tests for wide character functions used in char_traits<wchar_t>.
963 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
966 dnl Checks for names injected into std:: by the c_std headers.
967 AC_CHECK_FUNCS(btowc wctob fgetwc fgetws fputwc fputws fwide \
968 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
969 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
970 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
971 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
972 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
975 AC_MSG_CHECKING([for ISO C99 wchar_t support])
976 if test x"$has_weof" = xyes &&
977 test x"$has_wchar_minmax" = xyes &&
978 test x"$ac_wfuncs" = xyes; then
979 ac_isoC99_wchar_t=yes
983 AC_MSG_RESULT($ac_isoC99_wchar_t)
985 dnl Use iconv for wchar_t to char conversions. As such, check for
986 dnl X/Open Portability Guide, version 2 features (XPG2).
987 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
988 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
990 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
991 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
993 LIBS="$LIBS $libiconv"
995 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
996 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1000 AC_MSG_CHECKING([for XPG2 wchar_t support])
1001 if test x"$ac_has_iconv_h" = xyes &&
1002 test x"$ac_has_langinfo_h" = xyes &&
1003 test x"$ac_XPG2funcs" = xyes; then
1008 AC_MSG_RESULT($ac_XPG2_wchar_t)
1010 dnl At the moment, only enable wchar_t specializations if all the
1011 dnl above support is present.
1012 if test x"$ac_isoC99_wchar_t" = xyes &&
1013 test x"$ac_XPG2_wchar_t" = xyes; then
1014 AC_DEFINE(_GLIBCXX_USE_WCHAR_T)
1018 AC_MSG_CHECKING([for enabled wchar_t specializations])
1019 AC_MSG_RESULT($enable_wchar_t)
1024 dnl Check to see if debugging libraries are to be built.
1026 dnl GLIBCXX_ENABLE_DEBUG
1028 dnl --enable-libstdcxx-debug
1029 dnl builds a separate set of debugging libraries in addition to the
1030 dnl normal (shared, static) libstdc++ binaries.
1032 dnl --disable-libstdcxx-debug
1033 dnl builds only one (non-debug) version of libstdc++.
1035 dnl --enable-libstdcxx-debug-flags=FLAGS
1036 dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
1038 dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)]
1039 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1040 dnl defaults to `no'.
1041 AC_DEFUN(GLIBCXX_ENABLE_DEBUG, [dnl
1042 define([GLIBCXX_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1043 AC_ARG_ENABLE(libstdcxx_debug,
1044 changequote(<<, >>)dnl
1045 << --enable-libstdcxx-debug build extra debug library [default=>>GLIBCXX_ENABLE_DEBUG_DEFAULT],
1046 changequote([, ])dnl
1047 [case "${enableval}" in
1048 yes) enable_libstdcxx_debug=yes ;;
1049 no) enable_libstdcxx_debug=no ;;
1050 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1052 enable_libstdcxx_debug=GLIBCXX_ENABLE_DEBUG_DEFAULT)dnl
1053 AC_MSG_CHECKING([for additional debug build])
1054 AC_MSG_RESULT($enable_libstdcxx_debug)
1055 AM_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test "$enable_libstdcxx_debug" = yes)
1059 dnl Check for explicit debug flags.
1061 dnl GLIBCXX_ENABLE_DEBUG_FLAGS
1063 dnl --enable-libstdcxx-debug-flags='-O1'
1064 dnl is a general method for passing flags to be used when
1065 dnl building debug libraries with --enable-debug.
1067 dnl --disable-libstdcxx-debug-flags does nothing.
1068 dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
1069 dnl If "default flags" is an empty string (or "none"), the effect is
1070 dnl the same as --disable or --enable=no.
1071 AC_DEFUN(GLIBCXX_ENABLE_DEBUG_FLAGS, [dnl
1072 define([GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1073 AC_ARG_ENABLE(libstdcxx_debug_flags,
1074 changequote(<<, >>)dnl
1075 << --enable-libstdcxx-debug-flags=FLAGS pass compiler FLAGS when building
1077 [default=>>GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT],
1078 changequote([, ])dnl
1079 [case "${enableval}" in
1081 -*) enable_libstdcxx_debug_flags="${enableval}" ;;
1082 *) AC_MSG_ERROR([Unknown argument to extra debugging flags]) ;;
1084 enable_libstdcxx_debug_flags=GLIBCXX_ENABLE_DEBUG_FLAGS_DEFAULT)dnl
1086 dnl Option parsed, now set things appropriately
1087 case x"$enable_libstdcxx_debug" in
1089 case "$enable_libstdcxx_debug_flags" in
1091 DEBUG_FLAGS="-g3 -O0";;
1093 DEBUG_FLAGS="${enableval}"
1100 AC_SUBST(DEBUG_FLAGS)
1102 AC_MSG_CHECKING([for debug build flags])
1103 AC_MSG_RESULT($DEBUG_FLAGS)
1108 dnl Check for "unusual" flags to pass to the compiler while building.
1110 dnl GLIBCXX_ENABLE_CXX_FLAGS
1111 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1112 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1113 dnl Somehow this same set of flags must be passed when [re]building
1115 dnl --disable-cxx-flags passes nothing.
1116 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1117 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1118 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1119 dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags)
1120 dnl If "default flags" is an empty string (or "none"), the effect is
1121 dnl the same as --disable or --enable=no.
1122 AC_DEFUN(GLIBCXX_ENABLE_CXX_FLAGS, [dnl
1123 define([GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1124 AC_MSG_CHECKING([for extra compiler flags for building])
1125 AC_ARG_ENABLE(cxx_flags,
1126 changequote(<<, >>)dnl
1127 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1128 [default=>>GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT],
1129 changequote([, ])dnl
1130 [case "x$enable_cxx_flags" in
1132 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1134 enable_cxx_flags='' ;;
1136 enable_cxx_flags="$enableval" ;;
1138 enable_cxx_flags=GLIBCXX_ENABLE_CXX_FLAGS_DEFAULT)
1140 dnl Run through flags (either default or command-line) and set anything
1141 dnl extra (e.g., #defines) that must accompany particular g++ options.
1142 if test -n "$enable_cxx_flags"; then
1143 for f in $enable_cxx_flags; do
1147 *) # and we're trying to pass /what/ exactly?
1148 AC_MSG_ERROR([compiler flags start with a -]) ;;
1152 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1153 AC_MSG_RESULT($EXTRA_CXX_FLAGS)
1154 AC_SUBST(EXTRA_CXX_FLAGS)
1159 dnl Check for which locale library to use: gnu or generic.
1161 dnl GLIBCXX_ENABLE_CLOCALE
1162 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1163 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1165 dnl default is generic
1167 AC_DEFUN(GLIBCXX_ENABLE_CLOCALE, [
1168 AC_MSG_CHECKING([for clocale to use])
1169 AC_ARG_ENABLE(clocale,
1170 [ --enable-clocale enable model for target locale package.
1171 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1173 if test x$enable_clocale = xno; then
1178 enable_clocale_flag=$enable_clocale
1180 dnl Probe for locale support if no specific model is specified.
1181 dnl Default to "generic"
1182 if test x$enable_clocale_flag = xno; then
1183 case x${target_os} in
1185 AC_EGREP_CPP([_GLIBCXX_ok], [
1186 #include <features.h>
1187 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1190 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1192 # Test for bugs early in glibc-2.2.x series
1193 if test x$enable_clocale_flag = xgnu; then
1195 #define _GNU_SOURCE 1
1198 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
1199 extern __typeof(newlocale) __newlocale;
1200 extern __typeof(duplocale) __duplocale;
1201 extern __typeof(strcoll_l) __strcoll_l;
1205 const char __one[] = "Äuglein Augmen";
1206 const char __two[] = "Äuglein";
1211 loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1212 loc_dup = __duplocale(loc);
1213 i = __strcoll_l(__one, __two, loc);
1214 j = __strcoll_l(__one, __two, loc_dup);
1218 [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1219 [enable_clocale_flag=generic])
1222 # ... at some point put __strxfrm_l tests in as well.
1225 enable_clocale_flag=generic
1230 dnl Deal with gettext issues.
1232 [ --enable-nls use Native Language Support (default)],
1236 dnl Set configure bits for specified locale package
1237 case x${enable_clocale_flag} in
1239 AC_MSG_RESULT(generic)
1241 CLOCALE_H=config/locale/generic/c_locale.h
1242 CLOCALE_CC=config/locale/generic/c_locale.cc
1243 CCODECVT_H=config/locale/generic/codecvt_specializations.h
1244 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1245 CCOLLATE_CC=config/locale/generic/collate_members.cc
1246 CCTYPE_CC=config/locale/generic/ctype_members.cc
1247 CMESSAGES_H=config/locale/generic/messages_members.h
1248 CMESSAGES_CC=config/locale/generic/messages_members.cc
1249 CMONEY_CC=config/locale/generic/monetary_members.cc
1250 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1251 CTIME_H=config/locale/generic/time_members.h
1252 CTIME_CC=config/locale/generic/time_members.cc
1253 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1258 # Declare intention to use gettext, and add support for specific
1260 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1263 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1264 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1265 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1268 # Export the build objects.
1269 for ling in $ALL_LINGUAS; do \
1270 glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \
1271 glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \
1273 AC_SUBST(glibcxx_MOFILES)
1274 AC_SUBST(glibcxx_POFILES)
1276 CLOCALE_H=config/locale/gnu/c_locale.h
1277 CLOCALE_CC=config/locale/gnu/c_locale.cc
1278 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1279 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
1280 CCOLLATE_CC=config/locale/gnu/collate_members.cc
1281 CCTYPE_CC=config/locale/gnu/ctype_members.cc
1282 CMESSAGES_H=config/locale/gnu/messages_members.h
1283 CMESSAGES_CC=config/locale/gnu/messages_members.cc
1284 CMONEY_CC=config/locale/gnu/monetary_members.cc
1285 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1286 CTIME_H=config/locale/gnu/time_members.h
1287 CTIME_CC=config/locale/gnu/time_members.cc
1288 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
1291 AC_MSG_RESULT(IEEE 1003.1)
1293 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1294 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1295 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1296 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1297 CCOLLATE_CC=config/locale/generic/collate_members.cc
1298 CCTYPE_CC=config/locale/generic/ctype_members.cc
1299 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1300 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1301 CMONEY_CC=config/locale/generic/monetary_members.cc
1302 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1303 CTIME_H=config/locale/generic/time_members.h
1304 CTIME_CC=config/locale/generic/time_members.cc
1305 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1308 echo "$enable_clocale is an unknown locale package" 1>&2
1313 # This is where the testsuite looks for locale catalogs, using the
1314 # -DLOCALEDIR define during testsuite compilation.
1315 glibcxx_localedir=${glibcxx_builddir}/po/share/locale
1316 AC_SUBST(glibcxx_localedir)
1318 # A standalone libintl (e.g., GNU libintl) may be in use.
1319 if test $USE_NLS = yes; then
1320 AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no)
1321 AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no)
1323 if test $USE_NLS = yes; then
1324 AC_DEFINE(_GLIBCXX_USE_NLS)
1329 AC_SUBST(CCODECVT_H)
1330 AC_SUBST(CMESSAGES_H)
1331 AC_SUBST(CCODECVT_CC)
1332 AC_SUBST(CCOLLATE_CC)
1334 AC_SUBST(CMESSAGES_CC)
1336 AC_SUBST(CNUMERIC_CC)
1339 AC_SUBST(CLOCALE_CC)
1340 AC_SUBST(CLOCALE_INTERNAL_H)
1345 dnl Check for which I/O library to use: stdio, or something specific.
1347 dnl GLIBCXX_ENABLE_CSTDIO
1349 dnl default is stdio
1351 AC_DEFUN(GLIBCXX_ENABLE_CSTDIO, [
1352 AC_MSG_CHECKING([for cstdio to use])
1353 AC_ARG_ENABLE(cstdio,
1354 [ --enable-cstdio enable stdio for target io package.
1355 --enable-cstdio=LIB use LIB target-specific io package. [default=stdio]
1357 if test x$enable_cstdio = xno; then
1360 enable_cstdio=stdio)
1362 enable_cstdio_flag=$enable_cstdio
1364 dnl Check if a valid I/O package
1365 case x${enable_cstdio_flag} in
1366 xstdio | x | xno | xnone | xyes)
1368 CSTDIO_H=config/io/c_io_stdio.h
1369 BASIC_FILE_H=config/io/basic_file_stdio.h
1370 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1371 AC_MSG_RESULT(stdio)
1374 echo "$enable_cstdio is an unknown io package" 1>&2
1379 dnl Set directory for fpos.h
1380 FPOS_H=$fpos_include_dir
1384 AC_SUBST(BASIC_FILE_H)
1385 AC_SUBST(BASIC_FILE_CC)
1390 dnl Check to see if building and using a C++ precompiled header can be done.
1392 dnl GLIBCXX_ENABLE_PCH
1394 dnl --enable-libstdcxx-pch=yes
1395 dnl default, this shows intent to use stdc++.h.gch If it looks like it
1396 dnl may work, after some light-hearted attempts to puzzle out compiler
1397 dnl support, flip bits on in include/Makefile.am
1399 dnl --disable-libstdcxx-pch
1400 dnl turns off attempts to use or build stdc++.h.gch.
1402 AC_DEFUN(GLIBCXX_ENABLE_PCH, [dnl
1403 define([GLIBCXX_ENABLE_PCH_DEFAULT], ifelse($1,,, $1))dnl
1404 AC_ARG_ENABLE(libstdcxx_pch,
1405 changequote(<<, >>)dnl
1406 << --enable-libstdcxx-pch build pre-compiled libstdc++ includes [default=>>GLIBCXX_ENABLE_PCH_DEFAULT],
1407 changequote([, ])dnl
1408 [case "${enableval}" in
1409 yes) enable_libstdcxx_pch=yes ;;
1410 no) enable_libstdcxx_pch=no ;;
1411 *) AC_MSG_ERROR([Unknown argument to enable/disable PCH]) ;;
1413 enable_libstdcxx_pch=GLIBCXX_ENABLE_PCH_DEFAULT)dnl
1415 if test x$enable_libstdcxx_pch = xyes; then
1416 ac_test_CXXFLAGS="${CXXFLAGS+set}"
1417 ac_save_CXXFLAGS="$CXXFLAGS"
1418 CXXFLAGS='-Werror -Winvalid-pch -Wno-deprecated -x c++-header'
1420 AC_MSG_CHECKING([for compiler that seems to compile .gch files])
1421 if test x${pch_comp+set} != xset; then
1422 AC_CACHE_VAL(pch_comp, [
1425 AC_TRY_COMPILE([#include <math.h>], ,
1426 [pch_comp=yes], [pch_comp=no])
1430 AC_MSG_RESULT([$pch_comp])
1432 CXXFLAGS="$ac_save_CXXFLAGS"
1435 if test x"$enable_libstdcxx_pch" = xyes && test x"$pch_comp" = xno; then
1439 AC_MSG_CHECKING([for enabled PCH])
1440 AC_MSG_RESULT([$enable_libstdcxx_pch])
1442 AM_CONDITIONAL(GLIBCXX_BUILD_PCH, test "$enable_libstdcxx_pch" = yes)
1443 if test "$enable_libstdcxx_pch" = yes; then
1444 glibcxx_PCHFLAGS="-include bits/stdc++.h"
1448 AC_SUBST(glibcxx_PCHFLAGS)
1452 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1453 dnl We must stage the required headers so that they will be installed
1454 dnl with the library (unlike libgcc, the STL implementation is provided
1455 dnl solely within headers). Since we must not inject random user-space
1456 dnl macro names into user-provided C++ code, we first stage into <file>-in
1457 dnl and process to <file> with an output command. The reason for a two-
1458 dnl stage process here is to correctly handle $srcdir!=$objdir without
1459 dnl having to write complex code (the sed commands to clean the macro
1460 dnl namespace are complex and fragile enough as it is). We must also
1461 dnl add a relative path so that -I- is supported properly.
1463 AC_DEFUN(GLIBCXX_ENABLE_THREADS, [
1464 AC_MSG_CHECKING([for thread model used by GCC])
1465 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1466 AC_MSG_RESULT([$target_thread_file])
1468 if test $target_thread_file != single; then
1469 AC_DEFINE(HAVE_GTHR_DEFAULT)
1470 AC_DEFINE(_GLIBCXX_SUPPORTS_WEAK, __GXX_WEAK__)
1473 glibcxx_thread_h=gthr-$target_thread_file.h
1474 AC_SUBST(glibcxx_thread_h)
1479 dnl Check for exception handling support. If an explicit enable/disable
1480 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1481 dnl target may or may not support call frame exceptions.
1483 dnl GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
1484 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1485 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1487 dnl Define _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it.
1489 AC_DEFUN(GLIBCXX_ENABLE_SJLJ_EXCEPTIONS, [
1490 AC_MSG_CHECKING([for exception model to use])
1493 AC_ARG_ENABLE(sjlj-exceptions,
1494 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1496 [dnl Botheration. Now we've got to detect the exception model.
1497 dnl Link tests against libgcc.a are problematic since -- at least
1498 dnl as of this writing -- we've not been given proper -L bits for
1499 dnl single-tree newlib and libgloss.
1501 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1502 dnl conftest files before we got a change to grep them first.
1503 cat > conftest.$ac_ext << EOF
1504 [#]line __oline__ "configure"
1513 old_CXXFLAGS="$CXXFLAGS"
1515 if AC_TRY_EVAL(ac_compile); then
1516 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1517 enable_sjlj_exceptions=yes
1518 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1519 enable_sjlj_exceptions=no
1522 CXXFLAGS="$old_CXXFLAGS"
1524 if test x$enable_sjlj_exceptions = xyes; then
1525 AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
1526 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1527 ac_exception_model_name=sjlj
1528 elif test x$enable_sjlj_exceptions = xno; then
1529 ac_exception_model_name="call frame"
1531 AC_MSG_ERROR([unable to detect exception model])
1534 AC_MSG_RESULT($ac_exception_model_name)
1539 dnl Check for libunwind exception handling support. If enabled then
1540 dnl we assume that the _Unwind_* functions that make up the Unwind ABI
1541 dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by
1542 dnl libunwind instead of libgcc and that libstdc++ has a dependency
1543 dnl on libunwind as well as libgcc.
1545 dnl GLIBCXX_ENABLE_LIBUNWIND_EXCEPTIONS
1546 dnl --enable-libunwind-exceptions forces the use of libunwind.
1547 dnl --disable-libunwind-exceptions assumes there is no libunwind.
1549 dnl Define _GLIBCXX_LIBUNWIND_EXCEPTIONS if requested.
1551 AC_DEFUN(GLIBCXX_ENABLE_LIBUNWIND_EXCEPTIONS, [
1552 AC_MSG_CHECKING([for use of libunwind])
1553 AC_ARG_ENABLE(libunwind-exceptions,
1554 [ --enable-libunwind-exceptions force use of libunwind for exceptions],
1555 use_libunwind_exceptions=$enableval,
1556 use_libunwind_exceptions=no)
1557 AC_MSG_RESULT($use_libunwind_exceptions)
1558 dnl Option parsed, now set things appropriately
1559 if test x"$use_libunwind_exceptions" = xyes; then
1560 LIBUNWIND_FLAG="-lunwind"
1564 AC_SUBST(LIBUNWIND_FLAG)
1568 dnl Check for ISO/IEC 9899:1999 "C99" support.
1570 dnl GLIBCXX_ENABLE_C99
1571 dnl --enable-c99 defines _GLIBCXX_USE_C99
1572 dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined
1573 dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)]
1574 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1575 dnl defaults to `no'.
1576 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1578 dnl GLIBCXX_ENABLE_C99
1579 AC_DEFUN(GLIBCXX_ENABLE_C99, [dnl
1580 define([GLIBCXX_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1583 changequote(<<, >>)dnl
1584 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCXX_ENABLE_C99_DEFAULT],
1585 changequote([, ])dnl
1586 [case "$enableval" in
1587 yes) enable_c99=yes ;;
1588 no) enable_c99=no ;;
1589 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1591 enable_c99=GLIBCXX_ENABLE_C99_DEFAULT)dnl
1596 # Check for the existence of <math.h> functions used if C99 is enabled.
1598 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1599 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1600 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1601 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1602 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1603 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1604 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1605 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1606 AC_TRY_COMPILE([#include <math.h>],
1607 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1608 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1609 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1610 AC_TRY_COMPILE([#include <math.h>],
1611 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1612 AC_TRY_COMPILE([#include <math.h>],
1613 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1614 AC_MSG_RESULT($ac_c99_math)
1616 # Check for the existence in <stdio.h> of vscanf, et. al.
1618 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1619 AC_TRY_COMPILE([#include <stdio.h>],
1620 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1621 AC_TRY_COMPILE([#include <stdio.h>
1623 void foo(char* fmt, ...)
1624 {va_list args; va_start(args, fmt);
1625 vfscanf(stderr, "%i", args);}],
1626 [],, [ac_c99_stdio=no])
1627 AC_TRY_COMPILE([#include <stdio.h>
1629 void foo(char* fmt, ...)
1630 {va_list args; va_start(args, fmt);
1631 vscanf("%i", args);}],
1632 [],, [ac_c99_stdio=no])
1633 AC_TRY_COMPILE([#include <stdio.h>
1635 void foo(char* fmt, ...)
1636 {va_list args; va_start(args, fmt);
1637 vsnprintf(fmt, 0, "%i", args);}],
1638 [],, [ac_c99_stdio=no])
1639 AC_TRY_COMPILE([#include <stdio.h>
1641 void foo(char* fmt, ...)
1642 {va_list args; va_start(args, fmt);
1643 vsscanf(fmt, "%i", args);}],
1644 [],, [ac_c99_stdio=no])
1645 AC_MSG_RESULT($ac_c99_stdio)
1647 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1649 AC_MSG_CHECKING([for lldiv_t declaration])
1650 AC_CACHE_VAL(ac_c99_lldiv_t, [
1651 AC_TRY_COMPILE([#include <stdlib.h>],
1653 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1655 AC_MSG_RESULT($ac_c99_lldiv_t)
1657 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1658 AC_TRY_COMPILE([#include <stdlib.h>],
1659 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1660 AC_TRY_COMPILE([#include <stdlib.h>],
1661 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1662 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1663 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1664 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1665 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1666 if test x"$ac_c99_lldiv_t" = x"no"; then
1669 AC_MSG_RESULT($ac_c99_stdlib)
1671 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1672 # XXX the wchar.h checks should be rolled into the general C99 bits.
1674 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1675 AC_TRY_COMPILE([#include <wchar.h>],
1676 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1677 AC_TRY_COMPILE([#include <wchar.h>],
1678 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1679 AC_TRY_COMPILE([#include <wchar.h>],
1680 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1681 AC_MSG_RESULT($ac_c99_wchar)
1683 AC_MSG_CHECKING([for enabled ISO C99 support])
1684 if test x"$ac_c99_math" = x"no" ||
1685 test x"$ac_c99_stdio" = x"no" ||
1686 test x"$ac_c99_stdlib" = x"no" ||
1687 test x"$ac_c99_wchar" = x"no"; then
1690 AC_MSG_RESULT($enable_c99)
1692 # Option parsed, now set things appropriately
1693 if test x"$enable_c99" = x"yes"; then
1694 AC_DEFINE(_GLIBCXX_USE_C99)
1702 dnl Check for template specializations for the 'long long' type extension.
1703 dnl The result determines only whether 'long long' I/O is enabled; things
1704 dnl like numeric_limits<> specializations are always available.
1706 dnl GLIBCXX_ENABLE_LONG_LONG
1707 dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG
1708 dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined
1709 dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)]
1710 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1711 dnl defaults to `no'.
1712 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1714 dnl GLIBCXX_ENABLE_LONG_LONG
1715 AC_DEFUN(GLIBCXX_ENABLE_LONG_LONG, [dnl
1716 define([GLIBCXX_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1718 AC_ARG_ENABLE(long-long,
1719 changequote(<<, >>)dnl
1720 <<--enable-long-long turns on 'long long' [default=>>GLIBCXX_ENABLE_LONG_LONG_DEFAULT],
1721 changequote([, ])dnl
1722 [case "$enableval" in
1723 yes) enable_long_long=yes ;;
1724 no) enable_long_long=no ;;
1725 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1727 enable_long_long=GLIBCXX_ENABLE_LONG_LONG_DEFAULT)dnl
1732 AC_MSG_CHECKING([for enabled long long I/O support])
1733 # iostreams require strtoll, strtoull to compile
1734 AC_TRY_COMPILE([#include <stdlib.h>],
1735 [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1736 AC_TRY_COMPILE([#include <stdlib.h>],
1737 [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1739 # Option parsed, now set things appropriately
1740 if test x"$enable_long_long" = xyes; then
1741 AC_DEFINE(_GLIBCXX_USE_LONG_LONG)
1743 AC_MSG_RESULT($enable_long_long)
1750 dnl Check for what type of C headers to use.
1752 dnl GLIBCXX_ENABLE_CHEADERS
1753 dnl --enable-cheaders= [does stuff].
1754 dnl --disable-cheaders [does not do anything, really].
1755 dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)]
1756 dnl Where DEFAULT is either `c' or `c_std'.
1757 dnl If ommitted, it defaults to `c_std'.
1758 AC_DEFUN(GLIBCXX_ENABLE_CHEADERS, [dnl
1759 define([GLIBCXX_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1760 AC_MSG_CHECKING([for c header strategy to use])
1761 AC_ARG_ENABLE(cheaders,
1762 changequote(<<, >>)dnl
1763 << --enable-cheaders=MODEL construct "C" header files for g++ [default=>>GLIBCXX_ENABLE_CHEADERS_DEFAULT],
1765 [case "$enableval" in
1770 enable_cheaders=c_std
1772 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1775 enable_cheaders=GLIBCXX_ENABLE_CHEADERS_DEFAULT)
1776 AC_MSG_RESULT($enable_cheaders)
1778 dnl Option parsed, now set things appropriately
1779 case "$enable_cheaders" in
1781 C_INCLUDE_DIR='${glibcxx_srcdir}/include/c_std'
1784 C_INCLUDE_DIR='${glibcxx_srcdir}/include/c'
1788 AC_SUBST(C_INCLUDE_DIR)
1789 AM_CONDITIONAL(GLIBCXX_C_HEADERS_C, test "$enable_cheaders" = c)
1790 AM_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test "$enable_cheaders" = c_std)
1791 AM_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes)
1796 dnl Check for wide character support. Has the same effect as the option
1797 dnl in gcc's configure, but in a form that autoconf can mess with.
1799 dnl GLIBCXX_ENABLE_C_MBCHAR
1800 dnl --enable-c-mbchar requests all the wchar_t stuff.
1801 dnl --disable-c-mbchar doesn't.
1802 dnl + Usage: GLIBCXX_ENABLE_C_MBCHAR[(DEFAULT)]
1803 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1804 dnl defaults to `no'.
1805 AC_DEFUN(GLIBCXX_ENABLE_C_MBCHAR, [dnl
1806 define([GLIBCXX_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1807 AC_ARG_ENABLE(c-mbchar,
1808 changequote(<<, >>)dnl
1809 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCXX_ENABLE_C_MBCHAR_DEFAULT],
1810 changequote([, ])dnl
1811 [case "$enableval" in
1812 yes) enable_c_mbchar=yes ;;
1813 no) enable_c_mbchar=no ;;
1814 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1816 enable_c_mbchar=GLIBCXX_ENABLE_C_MBCHAR_DEFAULT)dnl
1817 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1822 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1824 dnl TOPLEVEL_INCLUDES
1825 dnl LIBMATH_INCLUDES
1826 dnl LIBSUPCXX_INCLUDES
1828 dnl GLIBCXX_EXPORT_INCLUDES
1829 AC_DEFUN(GLIBCXX_EXPORT_INCLUDES, [
1830 # Root level of the build directory include sources.
1831 GLIBCXX_INCLUDES="-I${glibcxx_builddir}/include/${target_alias} -I${glibcxx_builddir}/include"
1833 # Passed down for canadian crosses.
1834 if test x"$CANADIAN" = xyes; then
1835 TOPLEVEL_INCLUDES='-I$(includedir)'
1838 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1840 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1842 # Now, export this to all the little Makefiles....
1843 AC_SUBST(GLIBCXX_INCLUDES)
1844 AC_SUBST(TOPLEVEL_INCLUDES)
1845 AC_SUBST(LIBMATH_INCLUDES)
1846 AC_SUBST(LIBSUPCXX_INCLUDES)
1851 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1853 AC_DEFUN(GLIBCXX_EXPORT_FLAGS, [
1854 # Optimization flags that are probably a good idea for thrill-seekers. Just
1855 # uncomment the lines below and make, everything else is ready to go...
1856 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1858 AC_SUBST(OPTIMIZE_CXXFLAGS)
1860 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings'
1861 AC_SUBST(WARN_FLAGS)
1865 dnl GLIBCXX_EXPORT_INSTALL_INFO
1866 dnl calculates gxx_install_dir
1867 dnl exports glibcxx_toolexecdir
1868 dnl exports glibcxx_toolexeclibdir
1869 dnl exports glibcxx_prefixdir
1871 dnl Assumes cross_compiling bits already done, and with_cross_host in
1874 dnl GLIBCXX_EXPORT_INSTALL_INFO
1875 AC_DEFUN(GLIBCXX_EXPORT_INSTALL_INFO, [
1876 # Assumes glibcxx_builddir, glibcxx_srcdir are alreay set up and
1877 # exported correctly in GLIBCXX_CONFIGURE.
1878 glibcxx_toolexecdir=no
1879 glibcxx_toolexeclibdir=no
1880 glibcxx_prefixdir=${prefix}
1882 # Process the option --with-gxx-include-dir=<path to include-files directory>
1883 AC_MSG_CHECKING([for --with-gxx-include-dir])
1884 AC_ARG_WITH(gxx-include-dir,
1885 [ --with-gxx-include-dir the installation directory for include files],
1886 [case "${withval}" in
1888 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1895 gxx_include_dir=${withval}
1897 esac], [gxx_include_dir=no])
1898 AC_MSG_RESULT($gxx_include_dir)
1900 # Process the option "--enable-version-specific-runtime-libs"
1901 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1902 AC_ARG_ENABLE(version-specific-runtime-libs,
1903 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1904 [case "$enableval" in
1905 yes) version_specific_libs=yes ;;
1906 no) version_specific_libs=no ;;
1907 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
1909 version_specific_libs=no)dnl
1910 # Option set, now we can test it.
1911 AC_MSG_RESULT($version_specific_libs)
1913 # Default case for install directory for include files.
1914 if test $version_specific_libs = no && test $gxx_include_dir = no; then
1915 gxx_include_dir='$(prefix)'/include/c++/${gcc_version}
1918 # Version-specific runtime libs processing.
1919 if test $version_specific_libs = yes; then
1920 # Need the gcc compiler version to know where to install libraries
1921 # and header files if --enable-version-specific-runtime-libs option
1923 if test x"$gxx_include_dir" = x"no"; then
1924 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++
1926 glibcxx_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1927 glibcxx_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1930 # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir
1931 # Install a library built with a cross compiler in tooldir, not libdir.
1932 if test x"$glibcxx_toolexecdir" = x"no"; then
1933 if test -n "$with_cross_host" &&
1934 test x"$with_cross_host" != x"no"; then
1935 glibcxx_toolexecdir='$(exec_prefix)/$(target_alias)'
1936 glibcxx_toolexeclibdir='$(toolexecdir)/lib'
1938 glibcxx_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1939 glibcxx_toolexeclibdir='$(libdir)'
1941 multi_os_directory=`$CC -print-multi-os-directory`
1942 case $multi_os_directory in
1943 .) ;; # Avoid trailing /.
1944 *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;;
1948 AC_MSG_CHECKING([for install location])
1949 AC_MSG_RESULT($gxx_include_dir)
1951 AC_SUBST(glibcxx_prefixdir)
1952 AC_SUBST(gxx_include_dir)
1953 AC_SUBST(glibcxx_toolexecdir)
1954 AC_SUBST(glibcxx_toolexeclibdir)
1958 # Check for functions in math library.
1959 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1961 # This file can be copied and used freely without restrictions. It can
1962 # be used in projects which are not available under the GNU Public License
1963 # but which still want to provide support for the GNU gettext functionality.
1964 # Please note that the actual code is *not* freely available.
1968 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1969 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1970 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
1973 dnl This macro searches for a GNU version of make. If a match is found, the
1974 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1975 dnl set to "#". This is useful for including a special features in a Makefile,
1976 dnl which cannot be handled by other versions of make. The variable
1977 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1978 dnl the empty string otherwise.
1980 dnl Here is an example of its use:
1982 dnl Makefile.in might contain:
1984 dnl # A failsafe way of putting a dependency rule into a makefile
1986 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1988 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1989 dnl @ifGNUmake@ include $(DEPEND)
1990 dnl @ifGNUmake@ endif
1992 dnl Then configure.in would normally contain:
1994 dnl CHECK_GNU_MAKE()
1995 dnl AC_OUTPUT(Makefile)
1997 dnl Then perhaps to cause gnu make to override any other make, we could do
1998 dnl something like this (note that GNU make always looks for GNUmakefile first):
2000 dnl if ! test x$_cv_gnu_make_command = x ; then
2001 dnl mv Makefile GNUmakefile
2002 dnl echo .DEFAULT: > Makefile ;
2003 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
2006 dnl Then, if any (well almost any) other make is called, and GNU make also
2007 dnl exists, then the other make wraps the GNU make.
2009 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
2010 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
2012 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
2013 dnl #### GLIBCXX_ to the macro name; adding the :-make fallback in the
2014 dnl #### conditional's subshell (" --version" is not a command), using a
2015 dnl #### different option to grep(1).
2017 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
2018 dnl #### ${MAKE:-make}).
2021 GLIBCXX_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
2022 _cv_gnu_make_command='' ;
2023 dnl Search all the common names for GNU make
2024 for a in "${MAKE-make}" make gmake gnumake ; do
2025 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
2027 _cv_gnu_make_command=$a ;
2032 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
2033 dnl string, '#' otherwise
2034 if test "x$_cv_gnu_make_command" != "x" ; then
2043 dnl Check for headers for, and arguments to, the setrlimit() function.
2044 dnl Used only in testsuite_hooks.h.
2045 AC_DEFUN(GLIBCXX_CHECK_SETRLIMIT_ancilliary, [
2046 AC_TRY_COMPILE([#include <unistd.h>
2047 #include <sys/time.h>
2048 #include <sys/resource.h>
2049 ], [ int f = RLIMIT_$1 ; ],
2050 [glibcxx_mresult=1], [glibcxx_mresult=0])
2051 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcxx_mresult,
2052 [Only used in build directory testsuite_hooks.h.])
2054 AC_DEFUN(GLIBCXX_CHECK_SETRLIMIT, [
2055 setrlimit_have_headers=yes
2056 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
2058 setrlimit_have_headers=no)
2059 # If don't have the headers, then we can't run the tests now, and we
2060 # won't be seeing any of these during testsuite compilation.
2061 if test $setrlimit_have_headers = yes; then
2062 # Can't do these in a loop, else the resulting syntax is wrong.
2063 GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA)
2064 GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS)
2065 GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM)
2066 GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS)
2068 # Check for rlimit, setrlimit.
2069 AC_CACHE_VAL(ac_setrlimit, [
2070 AC_TRY_COMPILE([#include <unistd.h>
2071 #include <sys/time.h>
2072 #include <sys/resource.h>
2074 [ struct rlimit r; setrlimit(0, &r);],
2075 [ac_setrlimit=yes], [ac_setrlimit=no])
2079 AC_MSG_CHECKING([for testsuite memory limit support])
2080 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
2082 AC_DEFINE(_GLIBCXX_MEM_LIMITS)
2086 AC_MSG_RESULT($ac_mem_limits)
2091 dnl Does any necessary configuration of the testsuite directory. Generates
2092 dnl the testsuite_hooks.h header.
2094 dnl GLIBCXX_CONFIGURE_TESTSUITE [no args]
2095 AC_DEFUN(GLIBCXX_CONFIGURE_TESTSUITE, [
2097 if test x"$GLIBCXX_IS_CROSS_COMPILING" = xfalse; then
2098 # Do checks for memory limit functions.
2099 GLIBCXX_CHECK_SETRLIMIT
2101 # Look for setenv, so that extended locale tests can be performed.
2102 GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
2105 # Export file names for ABI checking.
2106 baseline_dir="${glibcxx_srcdir}/config/abi/${abi_baseline_pair}\$(MULTISUBDIR)"
2107 AC_SUBST(baseline_dir)
2109 # Determine if checking the ABI is desirable.
2110 if test x$enable_symvers = xno; then
2115 enable_abi_check=no ;;
2117 enable_abi_check=yes ;;
2121 AM_CONDITIONAL(GLIBCXX_TEST_WCHAR_T, test "$enable_wchar_t" = yes)
2122 AM_CONDITIONAL(GLIBCXX_TEST_ABI, test "$enable_abi_check" = yes)
2126 sinclude(../libtool.m4)
2127 dnl The lines below arrange for aclocal not to bring an installed
2128 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
2129 dnl add a definition of LIBTOOL to Makefile.in.
2130 ifelse(,,,[AC_SUBST(LIBTOOL)
2131 AC_DEFUN([AM_PROG_LIBTOOL])
2132 AC_DEFUN([AC_LIBTOOL_DLOPEN])
2133 AC_DEFUN([AC_PROG_LD])
2137 dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>.
2140 AC_DEFUN(GLIBCXX_CHECK_S_ISREG_OR_S_IFREG, [
2141 AC_CACHE_VAL(glibcxx_cv_S_ISREG, [
2142 AC_TRY_LINK([#include <sys/stat.h>],
2143 [struct stat buffer; fstat(0, &buffer); S_ISREG(buffer.st_mode); ],
2144 [glibcxx_cv_S_ISREG=yes],
2145 [glibcxx_cv_S_ISREG=no])
2147 AC_CACHE_VAL(glibcxx_cv_S_IFREG, [
2148 AC_TRY_LINK([#include <sys/stat.h>],
2149 [struct stat buffer; fstat(0, &buffer); S_IFREG & buffer.st_mode; ],
2150 [glibcxx_cv_S_IFREG=yes],
2151 [glibcxx_cv_S_IFREG=no])
2153 if test x$glibcxx_cv_S_ISREG = xyes; then
2154 AC_DEFINE(HAVE_S_ISREG)
2155 elif test x$glibcxx_cv_S_IFREG = xyes; then
2156 AC_DEFINE(HAVE_S_IFREG)
2161 dnl Check whether poll is available in <poll.h>.
2164 AC_DEFUN(GLIBCXX_CHECK_POLL, [
2165 AC_CACHE_VAL(glibcxx_cv_POLL, [
2166 AC_TRY_COMPILE([#include <poll.h>],
2167 [struct pollfd pfd[1]; pfd[0].events = POLLIN; poll(pfd, 1, 0); ],
2168 [glibcxx_cv_POLL=yes],
2169 [glibcxx_cv_POLL=no])
2171 if test x$glibcxx_cv_POLL = xyes; then
2172 AC_DEFINE(HAVE_POLL)
2176 # Check whether LC_MESSAGES is available in <locale.h>.
2177 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2179 # This file file be copied and used freely without restrictions. It can
2180 # be used in projects which are not available under the GNU Public License
2181 # but which still want to provide support for the GNU gettext functionality.
2182 # Please note that the actual code is *not* freely available.
2186 AC_DEFUN(AC_LC_MESSAGES, [
2187 AC_CHECK_HEADER(locale.h, [
2188 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
2189 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2190 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
2191 if test $ac_cv_val_LC_MESSAGES = yes; then
2192 AC_DEFINE(HAVE_LC_MESSAGES)
2199 dnl Check for whether the Boost-derived checks should be turned on.
2201 dnl GLIBCXX_ENABLE_CONCEPT_CHECKS
2202 dnl --enable-concept-checks turns them on.
2203 dnl --disable-concept-checks leaves them off.
2204 dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2205 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2206 dnl defaults to `no'.
2207 AC_DEFUN(GLIBCXX_ENABLE_CONCEPT_CHECKS, [dnl
2208 define([GLIBCXX_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
2209 AC_ARG_ENABLE(concept-checks,
2210 changequote(<<, >>)dnl
2211 << --enable-concept-checks use Boost-derived template checks [default=>>GLIBCXX_ENABLE_CONCEPT_CHECKS_DEFAULT],
2212 changequote([, ])dnl
2213 [case "$enableval" in
2214 yes) enable_concept_checks=yes ;;
2215 no) enable_concept_checks=no ;;
2216 *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
2218 enable_concept_checks=GLIBCXX_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
2219 dnl Option parsed, now set things appropriately
2220 if test x"$enable_concept_checks" = xyes; then
2221 AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS)
2227 dnl Add version tags to symbols in shared library (or not), additionally
2228 dnl marking other symbols as private/local (or not).
2230 dnl GLIBCXX_ENABLE_SYMVERS
2231 dnl --enable-symvers=style adds a version script to the linker call when
2232 dnl creating the shared library. The choice of version script is
2233 dnl controlled by 'style'.
2234 dnl --disable-symvers does not.
2235 dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)]
2236 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2237 dnl defaults to `no'. Passing `yes' tries to choose a default style
2238 dnl based on linker characteristics. Passing 'no' disables versioning.
2239 AC_DEFUN(GLIBCXX_ENABLE_SYMVERS, [dnl
2240 define([GLIBCXX_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl
2241 AC_ARG_ENABLE(symvers,
2242 changequote(<<, >>)dnl
2243 << --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCXX_ENABLE_SYMVERS_DEFAULT],
2244 changequote([, ])dnl
2245 [case "$enableval" in
2246 yes) enable_symvers=yes ;;
2247 no) enable_symvers=no ;;
2248 # other names here, just as sanity checks
2249 #gnu|sun|etcetera) enable_symvers=$enableval ;;
2250 gnu) enable_symvers=$enableval ;;
2251 *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;;
2253 enable_symvers=GLIBCXX_ENABLE_SYMVERS_DEFAULT)dnl
2255 # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we
2256 # don't know enough about $LD to do tricks...
2257 if test x$enable_shared = xno ||
2259 test x$glibcxx_gnu_ld_version = x; then
2263 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
2264 if test $enable_symvers != no; then
2265 AC_MSG_CHECKING([for shared libgcc])
2266 ac_save_CFLAGS="$CFLAGS"
2268 AC_TRY_LINK(, [return 0], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no)
2269 CFLAGS="$ac_save_CFLAGS"
2270 AC_MSG_RESULT($glibcxx_shared_libgcc)
2273 # For GNU ld, we need at least this version. It's 2.14 in the same format
2274 # as the tested-for version. See GLIBCXX_CHECK_LINKER_FEATURES for more.
2275 glibcxx_min_gnu_ld_version=21400
2277 # Check to see if unspecified "yes" value can win, given results
2279 if test $enable_symvers = yes ; then
2280 if test $with_gnu_ld = yes &&
2281 test $glibcxx_shared_libgcc = yes ;
2283 if test $glibcxx_gnu_ld_version -ge $glibcxx_min_gnu_ld_version ; then
2286 ac_test_CFLAGS="${CFLAGS+set}"
2287 ac_save_CFLAGS="$CFLAGS"
2288 CFLAGS='-shared -Wl,--version-script,conftest.map'
2291 echo 'FOO { global: f[a-z]o; local: *; };' > conftest.map
2293 AC_TRY_LINK([int foo;],, enable_symvers=gnu)
2294 if test "$ac_test_CFLAGS" = set; then
2295 CFLAGS="$ac_save_CFLAGS"
2297 # this is the suspicious part
2308 dnl Everything parsed; figure out what file to use.
2309 case $enable_symvers in
2311 SYMVER_MAP=config/linker-map.dummy
2314 SYMVER_MAP=config/linker-map.gnu
2315 AC_DEFINE(_GLIBCXX_SYMVER)
2319 AC_SUBST(SYMVER_MAP)
2320 AC_SUBST(port_specific_symbol_file)
2321 AM_CONDITIONAL(GLIBCXX_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
2322 AC_MSG_CHECKING([versioning on shared library symbols])
2323 AC_MSG_RESULT($enable_symvers)
2327 # isc-posix.m4 serial 2 (gettext-0.11.2)
2328 dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
2329 dnl This file is free software, distributed under the terms of the GNU
2330 dnl General Public License. As a special exception to the GNU General
2331 dnl Public License, this file may be distributed as part of a program
2332 dnl that contains a configuration script generated by Autoconf, under
2333 dnl the same distribution terms as the rest of that program.
2335 # This file is not needed with autoconf-2.53 and newer. Remove it in 2005.
2337 # This test replaces the one in autoconf.
2338 # Currently this macro should have the same name as the autoconf macro
2339 # because gettext's gettext.m4 (distributed in the automake package)
2340 # still uses it. Otherwise, the use in gettext.m4 makes autoheader
2341 # give these diagnostics:
2342 # configure.in:556: AC_TRY_COMPILE was called before AC_ISC_POSIX
2343 # configure.in:556: AC_TRY_RUN was called before AC_ISC_POSIX
2345 undefine([AC_ISC_POSIX])
2347 AC_DEFUN([AC_ISC_POSIX],
2349 dnl This test replaces the obsolescent AC_ISC_POSIX kludge.
2350 AC_CHECK_LIB(cposix, strerror, [LIBS="$LIBS -lcposix"])
2354 # Add --enable-maintainer-mode option to configure.
2359 AC_DEFUN([AM_MAINTAINER_MODE],
2360 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2361 dnl maintainer-mode is disabled by default
2362 AC_ARG_ENABLE(maintainer-mode,
2363 [ --enable-maintainer-mode enable make rules and dependencies not useful
2364 (and sometimes confusing) to the casual installer],
2365 USE_MAINTAINER_MODE=$enableval,
2366 USE_MAINTAINER_MODE=no)
2367 AC_MSG_RESULT($USE_MAINTAINER_MODE)
2368 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
2369 MAINT=$MAINTAINER_MODE_TRUE
2374 # Define a conditional.
2376 AC_DEFUN([AM_CONDITIONAL],
2387 # Do all the work for Automake. This macro actually does too much --
2388 # some checks are only needed if your package does certain things.
2389 # But this isn't really a big deal.
2394 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
2396 AC_DEFUN([AM_INIT_AUTOMAKE],
2397 [AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
2398 AC_REQUIRE([AC_PROG_INSTALL])
2403 dnl test to see if srcdir already configured
2404 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
2405 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
2408 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
2409 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
2410 AC_REQUIRE([AM_SANITY_CHECK])
2411 AC_REQUIRE([AC_ARG_PROGRAM])
2412 dnl FIXME This is truly gross.
2413 missing_dir=`cd $ac_aux_dir && pwd`
2414 AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version}, $missing_dir)
2415 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
2416 AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version}, $missing_dir)
2417 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
2418 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
2419 AC_REQUIRE([AC_PROG_MAKE_SET])])
2421 # Copyright 2002 Free Software Foundation, Inc.
2423 # This program is free software; you can redistribute it and/or modify
2424 # it under the terms of the GNU General Public License as published by
2425 # the Free Software Foundation; either version 2, or (at your option)
2426 # any later version.
2428 # This program is distributed in the hope that it will be useful,
2429 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2430 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2431 # GNU General Public License for more details.
2433 # You should have received a copy of the GNU General Public License
2434 # along with this program; if not, write to the Free Software
2435 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2437 # AM_AUTOMAKE_VERSION(VERSION)
2438 # ----------------------------
2439 # Automake X.Y traces this macro to ensure aclocal.m4 has been
2440 # generated from the m4 files accompanying Automake X.Y.
2441 AC_DEFUN([AM_AUTOMAKE_VERSION],[am__api_version="1.4"])
2443 # AM_SET_CURRENT_AUTOMAKE_VERSION
2444 # -------------------------------
2445 # Call AM_AUTOMAKE_VERSION so it can be traced.
2446 # This function is AC_REQUIREd by AC_INIT_AUTOMAKE.
2447 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
2448 [AM_AUTOMAKE_VERSION([1.4-p6])])
2451 # Check to make sure that the build environment is sane.
2454 AC_DEFUN([AM_SANITY_CHECK],
2455 [AC_MSG_CHECKING([whether build environment is sane])
2458 echo timestamp > conftestfile
2459 # Do `set' in a subshell so we don't clobber the current shell's
2460 # arguments. Must try -L first in case configure is actually a
2461 # symlink; some systems play weird games with the mod time of symlinks
2462 # (eg FreeBSD returns the mod time of the symlink's containing
2465 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
2466 if test "[$]*" = "X"; then
2468 set X `ls -t $srcdir/configure conftestfile`
2470 if test "[$]*" != "X $srcdir/configure conftestfile" \
2471 && test "[$]*" != "X conftestfile $srcdir/configure"; then
2473 # If neither matched, then we have a broken ls. This can happen
2474 # if, for instance, CONFIG_SHELL is bash and it inherits a
2475 # broken ls alias from the environment. This has actually
2476 # happened. Such a system could not be considered "sane".
2477 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
2478 alias in your environment])
2481 test "[$]2" = conftestfile
2487 AC_MSG_ERROR([newly created file is older than distributed files!
2488 Check your system clock])
2491 AC_MSG_RESULT(yes)])
2493 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
2494 dnl The program must properly implement --version.
2495 AC_DEFUN([AM_MISSING_PROG],
2496 [AC_MSG_CHECKING(for working $2)
2497 # Run test in a subshell; some versions of sh will print an error if
2498 # an executable is not found, even if stderr is redirected.
2499 # Redirect stdin to placate older versions of autoconf. Sigh.
2500 if ($2 --version) < /dev/null > /dev/null 2>&1; then
2502 AC_MSG_RESULT(found)
2505 AC_MSG_RESULT(missing)
2509 # Like AC_CONFIG_HEADER, but automatically create stamp file.
2511 AC_DEFUN([AM_CONFIG_HEADER],
2513 AC_CONFIG_HEADER([$1])
2514 dnl When config.status generates a header, we must update the stamp-h file.
2515 dnl This file resides in the same directory as the config header
2516 dnl that is generated. We must strip everything past the first ":",
2517 dnl and everything past the last "/".
2518 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
2519 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
2520 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
2522 for am_file in <<$1>>; do
2523 case " <<$>>CONFIG_HEADERS " in
2524 *" <<$>>am_file "*<<)>>
2525 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
2528 am_indx=`expr "<<$>>am_indx" + 1`