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 GLIBCPP_TOPREL_CONFIGURE
17 AC_DEFUN(GLIBCPP_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}/$toprel
48 AC_SUBST(toplevel_srcdir)
52 dnl Initialize the rest of the library configury.
55 AC_DEFUN(GLIBCPP_CONFIGURE, [
56 # Export build and source directories.
57 # These need to be absolute paths, yet at the same time need to
58 # canonicalize only relative paths, because then amd will not unmount
59 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
60 glibcpp_builddir=`${PWDCMD-pwd}`
62 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
63 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
65 AC_SUBST(glibcpp_builddir)
66 AC_SUBST(glibcpp_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])
85 glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
86 AC_SUBST(glibcpp_basedir)
88 # Never versions of autoconf add an underscore to these functions.
89 # Prevent future problems ...
90 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
91 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
92 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
93 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
96 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
97 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
98 # are probably using a cross compiler, which will not be able to fully
99 # link an executable. This is addressed in later versions of autoconf.
101 AC_DEFUN(LIB_AC_PROG_CC,
102 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
103 dnl Fool anybody using AC_PROG_CC.
104 AC_PROVIDE([AC_PROG_CC])
105 AC_CHECK_PROG(CC, gcc, gcc)
106 if test -z "$CC"; then
107 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
108 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
113 if test $ac_cv_prog_gcc = yes; then
115 dnl Check whether -g works, even if CFLAGS is set, in case the package
116 dnl plays around with CFLAGS (such as to build both debugging and
117 dnl normal versions of a library), tasteless as that idea is.
118 ac_test_CFLAGS="${CFLAGS+set}"
119 ac_save_CFLAGS="$CFLAGS"
122 if test "$ac_test_CFLAGS" = set; then
123 CFLAGS="$ac_save_CFLAGS"
124 elif test $ac_cv_prog_cc_g = yes; then
131 test "${CFLAGS+set}" = set || CFLAGS="-g"
137 # Likewise for AC_PROG_CXX. We can't just call it directly because g++
138 # will try to link in libstdc++.
139 AC_DEFUN(LIB_AC_PROG_CXX,
140 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
141 dnl Fool anybody using AC_PROG_CXX.
142 AC_PROVIDE([AC_PROG_CXX])
143 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
144 # flags that come in CXX while configuring libstdc++. They're different
145 # from those used for all other target libraries. If CXX is set in
146 # the environment, respect that here.
148 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
149 AC_SUBST(glibcpp_CXX)
151 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
155 if test $ac_cv_prog_gxx = yes; then
157 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
158 dnl plays around with CXXFLAGS (such as to build both debugging and
159 dnl normal versions of a library), tasteless as that idea is.
160 ac_test_CXXFLAGS="${CXXFLAGS+set}"
161 ac_save_CXXFLAGS="$CXXFLAGS"
164 if test "$ac_test_CXXFLAGS" = set; then
165 CXXFLAGS="$ac_save_CXXFLAGS"
166 elif test $ac_cv_prog_cxx_g = yes; then
173 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
179 # For directory versioning (e.g., headers) and other variables.
180 AC_MSG_CHECKING([for GCC version number])
181 gcc_version=`$glibcpp_CXX -dumpversion`
182 AC_MSG_RESULT($gcc_version)
184 # For some reason, gettext needs this.
187 AC_CHECK_TOOL(AS, as)
188 AC_CHECK_TOOL(AR, ar)
189 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
194 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
195 # at least currently, we never actually build a program, so we never
196 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
197 # fails, because we are probably configuring with a cross compiler
198 # which can't create executables. So we include AC_EXEEXT to keep
199 # automake happy, but we don't execute it, since we don't care about
202 # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
203 # to nothing, so nothing would remain between `then' and `fi' if it
204 # were not for the `:' below.
209 case [$]{glibcpp_basedir} in
210 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
211 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
214 # Find platform-specific directories containing configuration info. In
215 # addition to possibly modifying the same flags, it also sets up symlinks.
221 dnl Check to see if g++ can compile this library, and if so, if any version-
222 dnl specific precautions need to be taken.
224 dnl GLIBCPP_CHECK_COMPILER_VERSION
225 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
226 if test ! -f stamp-sanity-compiler; then
227 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
234 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
236 AC_MSG_RESULT($gpp_satisfactory)
237 touch stamp-sanity-compiler
243 dnl Tests for newer compiler features, or features that are present in newer
244 dnl compiler versions but not older compiler versions still in use, should
247 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
248 dnl new inlining code or the new system_header pragma will die on -Werror.
249 dnl Leave it out by default and use maint-mode to use it.
251 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
252 dnl compiler supports it and the user has not requested debug mode.
254 dnl GLIBCPP_CHECK_COMPILER_FEATURES
255 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
256 # All these tests are for C++; save the language and the compiler flags.
257 # The CXXFLAGS thing is suspicious, but based on similar bits previously
258 # found in GLIBCPP_CONFIGURE.
261 ac_test_CXXFLAGS="${CXXFLAGS+set}"
262 ac_save_CXXFLAGS="$CXXFLAGS"
264 # Check for maintainer-mode bits.
265 if test x"$USE_MAINTAINER_MODE" = xno; then
271 # Check for -ffunction-sections -fdata-sections
272 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
273 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
274 AC_TRY_COMPILE(, [int foo;
275 ], [ac_fdsections=yes], [ac_fdsections=no])
276 if test "$ac_test_CXXFLAGS" = set; then
277 CXXFLAGS="$ac_save_CXXFLAGS"
279 # this is the suspicious part
282 if test x"$ac_fdsections" = x"yes"; then
283 SECTION_FLAGS='-ffunction-sections -fdata-sections'
285 AC_MSG_RESULT($ac_fdsections)
289 AC_SUBST(SECTION_FLAGS)
294 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
295 dnl the native linker is in use, all variables will be defined to something
296 dnl safe (like an empty string).
298 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
299 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
300 dnl Define LD, with_gnu_ld, and (possibly) glibcpp_gnu_ld_version as
301 dnl side-effects of testing.
303 dnl GLIBCPP_CHECK_LINKER_FEATURES
304 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
305 # If we're not using GNU ld, then there's no point in even trying these
306 # tests. Check for that first. We should have already tested for gld
307 # by now (in libtool), but require it now just to be safe...
308 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
309 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
310 AC_REQUIRE([AC_PROG_LD])
312 # The name set by libtool depends on the version of libtool. Shame on us
313 # for depending on an impl detail, but c'est la vie. Older versions used
314 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
315 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
316 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
317 # set (hence we're using an older libtool), then set it.
318 if test x${with_gnu_ld+set} != xset; then
319 if test x${ac_cv_prog_gnu_ld+set} != xset; then
320 # We got through "ac_require(ac_prog_ld)" and still not set? Huh?
323 with_gnu_ld=$ac_cv_prog_gnu_ld
327 # Start by getting the version number. I think the libtool test already
328 # does some of this, but throws away the result.
330 ldver=`$LD --version 2>/dev/null | head -1 | \
331 sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
333 glibcpp_gnu_ld_version=`echo $ldver | \
334 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
337 if test "$with_gnu_ld" = "notbroken"; then
338 # GNU ld it is! Joy and bunny rabbits!
340 # All these tests are for C++; save the language and the compiler flags.
341 # Need to do this so that g++ won't try to link in libstdc++
342 ac_test_CFLAGS="${CFLAGS+set}"
343 ac_save_CFLAGS="$CFLAGS"
344 CFLAGS='-x c++ -Wl,--gc-sections'
346 # Check for -Wl,--gc-sections
347 # XXX This test is broken at the moment, as symbols required for
348 # linking are now in libsupc++ (not built yet.....). In addition,
349 # this test has cored on solaris in the past. In addition,
350 # --gc-sections doesn't really work at the moment (keeps on discarding
351 # used sections, first .eh_frame and now some of the glibc sections for
352 # iconv). Bzzzzt. Thanks for playing, maybe next time.
353 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
361 ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
362 if test "$ac_test_CFLAGS" = set; then
363 CFLAGS="$ac_save_CFLAGS"
365 # this is the suspicious part
368 if test "$ac_sectionLDflags" = "yes"; then
369 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
371 AC_MSG_RESULT($ac_sectionLDflags)
374 # Set linker optimization flags.
375 if test x"$with_gnu_ld" = x"yes"; then
376 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
379 AC_SUBST(SECTION_LDFLAGS)
380 AC_SUBST(OPT_LDFLAGS)
385 dnl Check to see if the (math function) argument passed is
386 dnl declared when using the c++ compiler
387 dnl ASSUMES argument is a math function with ONE parameter
389 dnl GLIBCPP_CHECK_MATH_DECL_1
390 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
391 AC_MSG_CHECKING([for $1 declaration])
392 if test x${glibcpp_cv_func_$1_use+set} != xset; then
393 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
396 AC_TRY_COMPILE([#include <math.h>
402 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
406 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
410 dnl Check to see if the (math function) argument passed is
411 dnl 1) declared when using the c++ compiler
412 dnl 2) has "C" linkage
413 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
415 dnl Define HAVE_CARGF etc if "cargf" is declared and links
417 dnl argument 1 is name of function to check
419 dnl ASSUMES argument is a math function with ONE parameter
421 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
422 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
423 GLIBCPP_CHECK_MATH_DECL_1($1)
424 if test x$glibcpp_cv_func_$1_use = x"yes"; then
427 GLIBCPP_CHECK_MATH_DECL_1(_$1)
428 if test x$glibcpp_cv_func__$1_use = x"yes"; then
436 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
437 dnl of functions at once. It's an all-or-nothing check -- either
438 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
439 dnl Doing it this way saves significant configure time.
440 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
441 AC_MSG_CHECKING([for $1 functions])
442 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
445 AC_TRY_COMPILE([#include <math.h>],
446 [ `for x in $3; do echo "$x (0);"; done` ],
447 [glibcpp_cv_func_$2_use=yes],
448 [glibcpp_cv_func_$2_use=no])
450 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
451 if test x$glibcpp_cv_func_$2_use = x"yes"; then
457 dnl Check to see if the (math function) argument passed is
458 dnl declared when using the c++ compiler
459 dnl ASSUMES argument is a math function with TWO parameters
461 dnl GLIBCPP_CHECK_MATH_DECL_2
462 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
463 AC_MSG_CHECKING([for $1 declaration])
464 if test x${glibcpp_cv_func_$1_use+set} != xset; then
465 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
468 AC_TRY_COMPILE([#include <math.h>],
470 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
474 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
478 dnl Check to see if the (math function) argument passed is
479 dnl 1) declared when using the c++ compiler
480 dnl 2) has "C" linkage
482 dnl Define HAVE_CARGF etc if "cargf" is declared and links
484 dnl argument 1 is name of function to check
486 dnl ASSUMES argument is a math function with TWO parameters
488 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
489 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
490 GLIBCPP_CHECK_MATH_DECL_2($1)
491 if test x$glibcpp_cv_func_$1_use = x"yes"; then
494 GLIBCPP_CHECK_MATH_DECL_2(_$1)
495 if test x$glibcpp_cv_func__$1_use = x"yes"; then
503 dnl Check to see if the (math function) argument passed is
504 dnl declared when using the c++ compiler
505 dnl ASSUMES argument is a math function with THREE parameters
507 dnl GLIBCPP_CHECK_MATH_DECL_3
508 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
509 AC_MSG_CHECKING([for $1 declaration])
510 if test x${glibcpp_cv_func_$1_use+set} != xset; then
511 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
514 AC_TRY_COMPILE([#include <math.h>],
516 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
520 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
524 dnl Check to see if the (math function) argument passed is
525 dnl 1) declared when using the c++ compiler
526 dnl 2) has "C" linkage
528 dnl Define HAVE_CARGF etc if "cargf" is declared and links
530 dnl argument 1 is name of function to check
532 dnl ASSUMES argument is a math function with THREE parameters
534 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
535 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
536 GLIBCPP_CHECK_MATH_DECL_3($1)
537 if test x$glibcpp_cv_func_$1_use = x"yes"; then
540 GLIBCPP_CHECK_MATH_DECL_3(_$1)
541 if test x$glibcpp_cv_func__$1_use = x"yes"; then
549 dnl Check to see if the (stdlib function) argument passed is
550 dnl 1) declared when using the c++ compiler
551 dnl 2) has "C" linkage
553 dnl argument 1 is name of function to check
555 dnl ASSUMES argument is a math function with TWO parameters
557 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
558 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
559 AC_MSG_CHECKING([for $1 declaration])
560 if test x${glibcpp_cv_func_$1_use+set} != xset; then
561 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
564 AC_TRY_COMPILE([#include <stdlib.h>],
566 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
570 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
571 if test x$glibcpp_cv_func_$1_use = x"yes"; then
578 dnl Check to see if the (stdlib function) argument passed is
579 dnl 1) declared when using the c++ compiler
580 dnl 2) has "C" linkage
582 dnl argument 1 is name of function to check
584 dnl ASSUMES argument is a function with THREE parameters
586 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3
587 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3, [
588 AC_MSG_CHECKING([for $1 declaration])
589 if test x${glibcpp_cv_func_$1_use+set} != xset; then
590 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
593 AC_TRY_COMPILE([#include <stdlib.h>],
595 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
599 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
600 if test x$glibcpp_cv_func_$1_use = x"yes"; then
606 dnl Because the builtins are picky picky picky about the arguments they take,
607 dnl do an explict linkage tests here.
608 dnl Check to see if the (math function) argument passed is
609 dnl 1) declared when using the c++ compiler
610 dnl 2) has "C" linkage
612 dnl Define HAVE_CARGF etc if "cargf" is declared and links
614 dnl argument 1 is name of function to check
616 dnl ASSUMES argument is a math function with ONE parameter
618 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
619 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
620 AC_MSG_CHECKING([for $1 declaration])
621 if test x${glibcpp_cv_func_$1_use+set} != xset; then
622 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
625 AC_TRY_COMPILE([#include <math.h>],
627 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
631 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
632 if test x$glibcpp_cv_func_$1_use = x"yes"; then
633 AC_MSG_CHECKING([for $1 linkage])
634 if test x${glibcpp_cv_func_$1_link+set} != xset; then
635 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
636 AC_TRY_LINK([#include <math.h>],
638 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
641 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
642 if test x$glibcpp_cv_func_$1_link = x"yes"; then
643 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
644 AC_DEFINE_UNQUOTED(${ac_tr_func})
651 dnl Check to see what builtin math functions are supported
653 dnl check for __builtin_abs
654 dnl check for __builtin_fabsf
655 dnl check for __builtin_fabs
656 dnl check for __builtin_fabl
657 dnl check for __builtin_labs
658 dnl check for __builtin_sqrtf
659 dnl check for __builtin_sqrtl
660 dnl check for __builtin_sqrt
661 dnl check for __builtin_sinf
662 dnl check for __builtin_sin
663 dnl check for __builtin_sinl
664 dnl check for __builtin_cosf
665 dnl check for __builtin_cos
666 dnl check for __builtin_cosl
668 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
669 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
670 dnl Test for builtin math functions.
671 dnl These are made in gcc/c-common.c
672 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
673 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
674 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
675 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
676 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
678 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
679 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
680 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
682 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
683 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
684 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
686 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
687 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
688 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
690 dnl There is, without a doubt, a more elegant way to have these
691 dnl names exported so that they won't be stripped out of acconfig.h by
692 dnl autoheader. I leave this as an exercise to somebody less frustrated
693 dnl than I.... please email the libstdc++ list if you can figure out a
694 dnl more elegant approach (see autoconf/acgen.m4 and specifically
695 dnl AC_CHECK_FUNC for things to steal.)
697 if test x$dummyvar = x"yes"; then
698 AC_DEFINE(HAVE___BUILTIN_ABS)
699 AC_DEFINE(HAVE___BUILTIN_LABS)
700 AC_DEFINE(HAVE___BUILTIN_COS)
701 AC_DEFINE(HAVE___BUILTIN_COSF)
702 AC_DEFINE(HAVE___BUILTIN_COSL)
703 AC_DEFINE(HAVE___BUILTIN_FABS)
704 AC_DEFINE(HAVE___BUILTIN_FABSF)
705 AC_DEFINE(HAVE___BUILTIN_FABSL)
706 AC_DEFINE(HAVE___BUILTIN_SIN)
707 AC_DEFINE(HAVE___BUILTIN_SINF)
708 AC_DEFINE(HAVE___BUILTIN_SINL)
709 AC_DEFINE(HAVE___BUILTIN_SQRT)
710 AC_DEFINE(HAVE___BUILTIN_SQRTF)
711 AC_DEFINE(HAVE___BUILTIN_SQRTL)
716 dnl Check to see what the underlying c library is like
717 dnl These checks need to do two things:
718 dnl 1) make sure the name is declared when using the c++ compiler
719 dnl 2) make sure the name has "C" linkage
720 dnl This might seem like overkill but experience has shown that it's not...
722 dnl Define HAVE_STRTOLD if "strtold" is declared and links
723 dnl Define HAVE_STRTOF if "strtof" is declared and links
724 dnl Define HAVE_DRAND48 if "drand48" is declared and links
726 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
727 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
728 ac_test_CXXFLAGS="${CXXFLAGS+set}"
729 ac_save_CXXFLAGS="$CXXFLAGS"
730 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
732 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
733 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
734 AC_CHECK_FUNCS(drand48)
736 CXXFLAGS="$ac_save_CXXFLAGS"
740 dnl Check to see what the underlying c library or math library is like.
741 dnl These checks need to do two things:
742 dnl 1) make sure the name is declared when using the c++ compiler
743 dnl 2) make sure the name has "C" linkage
744 dnl This might seem like overkill but experience has shown that it's not...
746 dnl Define HAVE_CARGF etc if "cargf" is found.
748 dnl GLIBCPP_CHECK_MATH_SUPPORT
749 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
750 ac_test_CXXFLAGS="${CXXFLAGS+set}"
751 ac_save_CXXFLAGS="$CXXFLAGS"
752 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
755 AC_CHECK_LIB(m, sin, libm="-lm")
759 dnl Check to see if certain C math functions exist.
760 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
761 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
762 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
763 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
764 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
765 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
766 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
767 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
769 dnl Check to see if basic C math functions have float versions.
770 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
775 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
778 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
779 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
780 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
781 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
782 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
783 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
784 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
785 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
786 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
787 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
788 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
789 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
790 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
791 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
792 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
793 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
795 dnl Check to see if basic C math functions have long double versions.
796 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
801 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
804 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
805 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
806 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
807 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
808 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
809 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
810 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
811 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
812 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
813 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
814 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
815 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
816 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
817 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
818 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
819 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
820 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
822 dnl Some runtimes have these functions with a preceding underscore. Please
823 dnl keep this sync'd with the one above. And if you add any new symbol,
824 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
825 dnl Check to see if certain C math functions exist.
827 dnl Check to see if basic C math functions have float versions.
828 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
830 _acosf _asinf _atanf \
832 _coshf _sinhf _tanhf)
833 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
837 dnl Check to see if basic C math functions have long double versions.
838 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
840 _acosl _asinl _atanl \
842 _coshl _sinhl _tanhl)
843 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
848 CXXFLAGS="$ac_save_CXXFLAGS"
853 dnl Check to see if there is native support for complex
855 dnl Don't compile bits in math/* if native support exits.
857 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
859 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
860 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
861 dnl Check for complex versions of math functions of platform.
862 AC_CHECK_LIB(m, main)
863 AC_REPLACE_MATHFUNCS(nan copysignf)
865 dnl For __signbit to signbit conversions.
866 AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
867 AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
869 dnl Compile the long double complex functions only if the function
870 dnl provides the non-complex long double functions that are needed.
871 dnl Currently this includes copysignl, which should be
872 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
873 if test x$ac_cv_func_copysignl = x"yes"; then
874 AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
877 if test -n "$LIBMATHOBJS"; then
880 AC_SUBST(LIBMATHOBJS)
881 AM_CONDITIONAL(GLIBCPP_BUILD_LIBMATH, test "$need_libmath" = yes)
885 dnl Check to see what architecture and operating system we are compiling
886 dnl for. Also, if architecture- or OS-specific flags are required for
887 dnl compilation, pick them up here.
889 dnl GLIBCPP_CHECK_TARGET
890 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
891 . [$]{glibcpp_basedir}/configure.target
892 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
893 AC_MSG_RESULT(OS config directory is $os_include_dir)
898 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
899 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
900 dnl must have been previously checked.)
902 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
903 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
905 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
906 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
907 dnl Wide characters disabled by default.
910 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
911 dnl others even if wchar_t support is not on.
912 AC_MSG_CHECKING([for mbstate_t])
913 AC_TRY_COMPILE([#include <wchar.h>],
914 [mbstate_t teststate;],
915 have_mbstate_t=yes, have_mbstate_t=no)
916 AC_MSG_RESULT($have_mbstate_t)
917 if test x"$have_mbstate_t" = xyes; then
918 AC_DEFINE(HAVE_MBSTATE_T)
921 dnl Sanity check for existence of ISO C99 headers for extended encoding.
922 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
923 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
925 dnl Only continue checking if the ISO C99 headers exist and support is on.
926 if test x"$ac_has_wchar_h" = xyes &&
927 test x"$ac_has_wctype_h" = xyes &&
928 test x"$enable_c_mbchar" != xno; then
930 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
931 dnl numeric_limits can instantiate type_traits<wchar_t>
932 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
933 AC_TRY_COMPILE([#include <wchar.h>],
934 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
935 has_wchar_minmax=yes, has_wchar_minmax=no)
936 AC_MSG_RESULT($has_wchar_minmax)
938 dnl Test wchar.h for WEOF, which is what we use to determine whether
939 dnl to specialize for char_traits<wchar_t> or not.
940 AC_MSG_CHECKING([for WEOF])
943 #include <stddef.h>],
945 has_weof=yes, has_weof=no)
946 AC_MSG_RESULT($has_weof)
948 dnl Tests for wide character functions used in char_traits<wchar_t>.
950 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
953 dnl Checks for names injected into std:: by the c_std headers.
954 AC_CHECK_FUNCS(btowc wctob fgetwc fgetws fputwc fputws fwide \
955 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
956 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
957 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
958 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
959 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
962 AC_MSG_CHECKING([for ISO C99 wchar_t support])
963 if test x"$has_weof" = xyes &&
964 test x"$has_wchar_minmax" = xyes &&
965 test x"$ac_wfuncs" = xyes; then
966 ac_isoC99_wchar_t=yes
970 AC_MSG_RESULT($ac_isoC99_wchar_t)
972 dnl Use iconv for wchar_t to char conversions. As such, check for
973 dnl X/Open Portability Guide, version 2 features (XPG2).
974 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
975 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
977 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
978 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
980 LIBS="$LIBS $libiconv"
982 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
983 ac_XPG2funcs=yes, ac_XPG2funcs=no)
987 AC_MSG_CHECKING([for XPG2 wchar_t support])
988 if test x"$ac_has_iconv_h" = xyes &&
989 test x"$ac_has_langinfo_h" = xyes &&
990 test x"$ac_XPG2funcs" = xyes; then
995 AC_MSG_RESULT($ac_XPG2_wchar_t)
997 dnl At the moment, only enable wchar_t specializations if all the
998 dnl above support is present.
999 if test x"$ac_isoC99_wchar_t" = xyes &&
1000 test x"$ac_XPG2_wchar_t" = xyes; then
1001 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1005 AC_MSG_CHECKING([for enabled wchar_t specializations])
1006 AC_MSG_RESULT($enable_wchar_t)
1007 AM_CONDITIONAL(GLIBCPP_TEST_WCHAR_T, test "$enable_wchar_t" = yes)
1012 dnl Check to see if debugging libraries are to be built.
1014 dnl GLIBCPP_ENABLE_DEBUG
1017 dnl builds a separate set of debugging libraries in addition to the
1018 dnl normal (shared, static) libstdc++ binaries.
1021 dnl builds only one (non-debug) version of libstdc++.
1023 dnl --enable-debug-flags=FLAGS
1024 dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
1026 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1027 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1028 dnl defaults to `no'.
1029 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1030 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1031 AC_ARG_ENABLE(debug,
1032 changequote(<<, >>)dnl
1033 << --enable-debug build extra debug library [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1034 changequote([, ])dnl
1035 [case "${enableval}" in
1036 yes) enable_debug=yes ;;
1037 no) enable_debug=no ;;
1038 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1040 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1041 AC_MSG_CHECKING([for additional debug build])
1042 AC_MSG_RESULT($enable_debug)
1043 AM_CONDITIONAL(GLIBCPP_BUILD_DEBUG, test "$enable_debug" = yes)
1047 dnl Check for explicit debug flags.
1049 dnl GLIBCPP_ENABLE_DEBUG_FLAGS
1051 dnl --enable-debug-flags='-O1'
1052 dnl is a general method for passing flags to be used when
1053 dnl building debug libraries with --enable-debug.
1055 dnl --disable-debug-flags does nothing.
1056 dnl + Usage: GLIBCPP_ENABLE_DEBUG_FLAGS(default flags)
1057 dnl If "default flags" is an empty string (or "none"), the effect is
1058 dnl the same as --disable or --enable=no.
1059 AC_DEFUN(GLIBCPP_ENABLE_DEBUG_FLAGS, [dnl
1060 define([GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1061 AC_ARG_ENABLE(debug_flags,
1062 changequote(<<, >>)dnl
1063 << --enable-debug-flags=FLAGS pass compiler FLAGS when building debug
1064 library;[default=>>GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT],
1065 changequote([, ])dnl
1066 [case "${enableval}" in
1068 -*) enable_debug_flags="${enableval}" ;;
1069 *) AC_MSG_ERROR([Unknown argument to extra debugging flags]) ;;
1071 enable_debug_flags=GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT)dnl
1073 dnl Option parsed, now set things appropriately
1074 case x"$enable_debug" in
1076 case "$enable_debug_flags" in
1078 DEBUG_FLAGS="-g3 -O0";;
1080 DEBUG_FLAGS="${enableval}"
1087 AC_SUBST(DEBUG_FLAGS)
1089 AC_MSG_CHECKING([for debug build flags])
1090 AC_MSG_RESULT($DEBUG_FLAGS)
1095 dnl Check for "unusual" flags to pass to the compiler while building.
1097 dnl GLIBCPP_ENABLE_CXX_FLAGS
1098 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1099 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1100 dnl Somehow this same set of flags must be passed when [re]building
1102 dnl --disable-cxx-flags passes nothing.
1103 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1104 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1105 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1106 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1107 dnl If "default flags" is an empty string (or "none"), the effect is
1108 dnl the same as --disable or --enable=no.
1109 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1110 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1111 AC_MSG_CHECKING([for extra compiler flags for building])
1112 AC_ARG_ENABLE(cxx_flags,
1113 changequote(<<, >>)dnl
1114 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1115 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1116 changequote([, ])dnl
1117 [case "x$enable_cxx_flags" in
1119 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1121 enable_cxx_flags='' ;;
1123 enable_cxx_flags="$enableval" ;;
1125 enable_cxx_flags=GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT)
1127 dnl Run through flags (either default or command-line) and set anything
1128 dnl extra (e.g., #defines) that must accompany particular g++ options.
1129 if test -n "$enable_cxx_flags"; then
1130 for f in $enable_cxx_flags; do
1134 *) # and we're trying to pass /what/ exactly?
1135 AC_MSG_ERROR([compiler flags start with a -]) ;;
1139 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1140 AC_MSG_RESULT($EXTRA_CXX_FLAGS)
1141 AC_SUBST(EXTRA_CXX_FLAGS)
1146 dnl Check for which locale library to use: gnu or generic.
1148 dnl GLIBCPP_ENABLE_CLOCALE
1149 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1150 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1152 dnl default is generic
1154 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1155 AC_MSG_CHECKING([for clocale to use])
1156 AC_ARG_ENABLE(clocale,
1157 [ --enable-clocale enable model for target locale package.
1158 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1160 if test x$enable_clocale = xno; then
1165 enable_clocale_flag=$enable_clocale
1167 dnl Probe for locale support if no specific model is specified.
1168 dnl Default to "generic"
1169 if test x$enable_clocale_flag = xno; then
1170 case x${target_os} in
1172 AC_EGREP_CPP([_GLIBCPP_ok], [
1173 #include <features.h>
1174 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1177 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1179 # Test for bugs early in glibc-2.2.x series
1180 if test x$enable_clocale_flag = xgnu; then
1182 #define _GNU_SOURCE 1
1185 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
1186 extern __typeof(newlocale) __newlocale;
1187 extern __typeof(duplocale) __duplocale;
1188 extern __typeof(strcoll_l) __strcoll_l;
1192 const char __one[] = "Äuglein Augmen";
1193 const char __two[] = "Äuglein";
1198 loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1199 loc_dup = __duplocale(loc);
1200 i = __strcoll_l(__one, __two, loc);
1201 j = __strcoll_l(__one, __two, loc_dup);
1205 [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1206 [enable_clocale_flag=generic])
1209 # ... at some point put __strxfrm_l tests in as well.
1212 enable_clocale_flag=generic
1217 dnl Deal with gettext issues.
1219 [ --enable-nls use Native Language Support (default)],
1223 dnl Set configure bits for specified locale package
1224 case x${enable_clocale_flag} in
1226 AC_MSG_RESULT(generic)
1228 CLOCALE_H=config/locale/generic/c_locale.h
1229 CLOCALE_CC=config/locale/generic/c_locale.cc
1230 CCODECVT_H=config/locale/generic/codecvt_specializations.h
1231 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1232 CCOLLATE_CC=config/locale/generic/collate_members.cc
1233 CCTYPE_CC=config/locale/generic/ctype_members.cc
1234 CMESSAGES_H=config/locale/generic/messages_members.h
1235 CMESSAGES_CC=config/locale/generic/messages_members.cc
1236 CMONEY_CC=config/locale/generic/monetary_members.cc
1237 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1238 CTIME_H=config/locale/generic/time_members.h
1239 CTIME_CC=config/locale/generic/time_members.cc
1240 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1245 # Declare intention to use gettext, and add support for specific
1247 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1250 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1251 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1252 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1255 # Export the build objects.
1256 for ling in $ALL_LINGUAS; do \
1257 glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1258 glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1260 AC_SUBST(glibcpp_MOFILES)
1261 AC_SUBST(glibcpp_POFILES)
1263 CLOCALE_H=config/locale/gnu/c_locale.h
1264 CLOCALE_CC=config/locale/gnu/c_locale.cc
1265 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1266 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
1267 CCOLLATE_CC=config/locale/gnu/collate_members.cc
1268 CCTYPE_CC=config/locale/gnu/ctype_members.cc
1269 CMESSAGES_H=config/locale/gnu/messages_members.h
1270 CMESSAGES_CC=config/locale/gnu/messages_members.cc
1271 CMONEY_CC=config/locale/gnu/monetary_members.cc
1272 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1273 CTIME_H=config/locale/gnu/time_members.h
1274 CTIME_CC=config/locale/gnu/time_members.cc
1275 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
1278 AC_MSG_RESULT(generic)
1280 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1281 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1282 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1283 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1284 CCOLLATE_CC=config/locale/generic/collate_members.cc
1285 CCTYPE_CC=config/locale/generic/ctype_members.cc
1286 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1287 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1288 CMONEY_CC=config/locale/generic/monetary_members.cc
1289 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1290 CTIME_H=config/locale/generic/time_members.h
1291 CTIME_CC=config/locale/generic/time_members.cc
1292 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1295 echo "$enable_clocale is an unknown locale package" 1>&2
1300 # This is where the testsuite looks for locale catalogs, using the
1301 # -DLOCALEDIR define during testsuite compilation.
1302 glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1303 AC_SUBST(glibcpp_localedir)
1307 AC_SUBST(CCODECVT_H)
1308 AC_SUBST(CMESSAGES_H)
1309 AC_SUBST(CCODECVT_CC)
1310 AC_SUBST(CCOLLATE_CC)
1312 AC_SUBST(CMESSAGES_CC)
1314 AC_SUBST(CNUMERIC_CC)
1317 AC_SUBST(CLOCALE_CC)
1318 AC_SUBST(CLOCALE_INTERNAL_H)
1323 dnl Check for which I/O library to use: libio, or something specific.
1325 dnl GLIBCPP_ENABLE_CSTDIO
1326 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1328 dnl default is stdio
1330 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1331 AC_MSG_CHECKING([for cstdio to use])
1332 AC_ARG_ENABLE(cstdio,
1333 [ --enable-cstdio enable stdio for target io package.
1334 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1336 if test x$enable_cstdio = xno; then
1339 enable_cstdio=stdio)
1341 enable_cstdio_flag=$enable_cstdio
1343 dnl Check if a valid I/O package
1344 case x${enable_cstdio_flag} in
1346 CSTDIO_H=config/io/c_io_libio.h
1347 BASIC_FILE_H=config/io/basic_file_libio.h
1348 BASIC_FILE_CC=config/io/basic_file_libio.cc
1349 AC_MSG_RESULT(libio)
1351 # see if we are on a system with libio native (ie, linux)
1352 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1354 # Need to check and see what version of glibc is being used. If
1355 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1356 # compile most of libio for linux systems.
1357 if test x$has_libio = x"yes"; then
1360 AC_MSG_CHECKING([for glibc version >= 2.2])
1361 AC_EGREP_CPP([ok], [
1362 #include <features.h>
1363 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1366 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1367 AC_MSG_RESULT($glibc_satisfactory)
1371 # XXX at the moment, admit defeat and force the recompilation
1372 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1373 glibc_satisfactory=no
1375 if test x$glibc_satisfactory = x"yes"; then
1380 # bkoz XXX need to add checks to enable this
1381 # pme XXX here's a first pass at such a check
1382 if test x$enable_c_mbchar != xno; then
1390 # Using libio, but <libio.h> doesn't exist on the target system. . .
1392 # bkoz XXX need to add checks to enable this
1393 # pme XXX here's a first pass at such a check
1394 if test x$enable_c_mbchar != xno; then
1401 xstdio | x | xno | xnone | xyes)
1403 CSTDIO_H=config/io/c_io_stdio.h
1404 BASIC_FILE_H=config/io/basic_file_stdio.h
1405 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1406 AC_MSG_RESULT(stdio)
1408 # We're not using stdio.
1413 echo "$enable_cstdio is an unknown io package" 1>&2
1418 AC_SUBST(BASIC_FILE_H)
1419 AC_SUBST(BASIC_FILE_CC)
1421 # 2000-08-04 bkoz hack
1422 CCODECVT_C=config/io/c_io_libio_codecvt.c
1423 AC_SUBST(CCODECVT_C)
1424 # 2000-08-04 bkoz hack
1426 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1427 test "$need_libio" = yes || test "$need_wlibio" = yes)
1428 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1429 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1430 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1431 libio_la=../libio/libio.la
1440 dnl Check to see if building and using a C++ precompiled header can be done.
1442 dnl GLIBCPP_CHECK_PCH
1444 dnl If it looks like it may work, flip bits on in include/Makefile.am
1446 AC_DEFUN(GLIBCPP_CHECK_PCH, [
1447 ac_test_CXXFLAGS="${CXXFLAGS+set}"
1448 ac_save_CXXFLAGS="$CXXFLAGS"
1449 CXXFLAGS='-Werror -Winvalid-pch -Wno-deprecated -x c++-header'
1451 AC_MSG_CHECKING([for compiler that seems to compile .gch files])
1452 if test x${glibcpp_pch_comp+set} != xset; then
1453 AC_CACHE_VAL(glibcpp_pch_comp, [
1456 AC_TRY_COMPILE([#include <math.h>
1459 [glibcpp_pch_comp=yes], [glibcpp_pch_comp=no])
1463 AC_MSG_RESULT([$glibcpp_pch_comp])
1465 CXXFLAGS="$ac_save_CXXFLAGS"
1466 AM_CONDITIONAL(GLIBCPP_BUILD_PCH, test "$glibcpp_pch_comp" = yes)
1470 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1471 dnl We must stage the required headers so that they will be installed
1472 dnl with the library (unlike libgcc, the STL implementation is provided
1473 dnl solely within headers). Since we must not inject random user-space
1474 dnl macro names into user-provided C++ code, we first stage into <file>-in
1475 dnl and process to <file> with an output command. The reason for a two-
1476 dnl stage process here is to correctly handle $srcdir!=$objdir without
1477 dnl having to write complex code (the sed commands to clean the macro
1478 dnl namespace are complex and fragile enough as it is). We must also
1479 dnl add a relative path so that -I- is supported properly.
1481 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1482 AC_MSG_CHECKING([for thread model used by GCC])
1483 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1484 AC_MSG_RESULT([$target_thread_file])
1486 if test $target_thread_file != single; then
1487 AC_DEFINE(HAVE_GTHR_DEFAULT)
1488 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1491 glibcpp_thread_h=gthr-$target_thread_file.h
1492 AC_SUBST(glibcpp_thread_h)
1497 dnl Check for exception handling support. If an explicit enable/disable
1498 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1499 dnl target may or may not support call frame exceptions.
1501 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1502 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1503 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1505 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1507 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1508 AC_MSG_CHECKING([for exception model to use])
1511 AC_ARG_ENABLE(sjlj-exceptions,
1512 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1514 [dnl Botheration. Now we've got to detect the exception model.
1515 dnl Link tests against libgcc.a are problematic since -- at least
1516 dnl as of this writing -- we've not been given proper -L bits for
1517 dnl single-tree newlib and libgloss.
1519 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1520 dnl conftest files before we got a change to grep them first.
1521 cat > conftest.$ac_ext << EOF
1522 [#]line __oline__ "configure"
1531 old_CXXFLAGS="$CXXFLAGS"
1533 if AC_TRY_EVAL(ac_compile); then
1534 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1535 enable_sjlj_exceptions=yes
1536 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1537 enable_sjlj_exceptions=no
1540 CXXFLAGS="$old_CXXFLAGS"
1542 if test x$enable_sjlj_exceptions = xyes; then
1543 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1544 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1545 ac_exception_model_name=sjlj
1546 elif test x$enable_sjlj_exceptions = xno; then
1547 ac_exception_model_name="call frame"
1549 AC_MSG_ERROR([unable to detect exception model])
1552 AC_MSG_RESULT($ac_exception_model_name)
1557 dnl Check for libunwind exception handling support. If enabled then
1558 dnl we assume that the _Unwind_* functions that make up the Unwind ABI
1559 dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by
1560 dnl libunwind instead of libgcc and that libstdc++ has a dependency
1561 dnl on libunwind as well as libgcc.
1563 dnl GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
1564 dnl --enable-libunwind-exceptions forces the use of libunwind.
1565 dnl --disable-libunwind-exceptions assumes there is no libunwind.
1567 dnl Define _GLIBCPP_LIBUNWIND_EXCEPTIONS if requested.
1569 AC_DEFUN(GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS, [
1570 AC_MSG_CHECKING([for use of libunwind])
1571 AC_ARG_ENABLE(libunwind-exceptions,
1572 [ --enable-libunwind-exceptions force use of libunwind for exceptions],
1573 use_libunwind_exceptions=$enableval,
1574 use_libunwind_exceptions=no)
1575 AC_MSG_RESULT($use_libunwind_exceptions)
1576 dnl Option parsed, now set things appropriately
1577 if test x"$use_libunwind_exceptions" = xyes; then
1578 LIBUNWIND_FLAG="-lunwind"
1582 AC_SUBST(LIBUNWIND_FLAG)
1586 dnl Check for ISO/IEC 9899:1999 "C99" support.
1588 dnl GLIBCPP_ENABLE_C99
1589 dnl --enable-c99 defines _GLIBCPP_USE_C99
1590 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1591 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1592 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1593 dnl defaults to `no'.
1594 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1596 dnl GLIBCPP_ENABLE_C99
1597 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1598 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1601 changequote(<<, >>)dnl
1602 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1603 changequote([, ])dnl
1604 [case "$enableval" in
1605 yes) enable_c99=yes ;;
1606 no) enable_c99=no ;;
1607 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1609 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1614 # Check for the existence of <math.h> functions used if C99 is enabled.
1616 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1617 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1618 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1619 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1620 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1621 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1622 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1623 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1624 AC_TRY_COMPILE([#include <math.h>],
1625 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1626 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1627 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1628 AC_TRY_COMPILE([#include <math.h>],
1629 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1630 AC_TRY_COMPILE([#include <math.h>],
1631 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1632 AC_MSG_RESULT($ac_c99_math)
1634 # Check for the existence in <stdio.h> of vscanf, et. al.
1636 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1637 AC_TRY_COMPILE([#include <stdio.h>],
1638 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1639 AC_TRY_COMPILE([#include <stdio.h>
1641 void foo(char* fmt, ...)
1642 {va_list args; va_start(args, fmt);
1643 vfscanf(stderr, "%i", args);}],
1644 [],, [ac_c99_stdio=no])
1645 AC_TRY_COMPILE([#include <stdio.h>
1647 void foo(char* fmt, ...)
1648 {va_list args; va_start(args, fmt);
1649 vscanf("%i", args);}],
1650 [],, [ac_c99_stdio=no])
1651 AC_TRY_COMPILE([#include <stdio.h>
1653 void foo(char* fmt, ...)
1654 {va_list args; va_start(args, fmt);
1655 vsnprintf(fmt, 0, "%i", args);}],
1656 [],, [ac_c99_stdio=no])
1657 AC_TRY_COMPILE([#include <stdio.h>
1659 void foo(char* fmt, ...)
1660 {va_list args; va_start(args, fmt);
1661 vsscanf(fmt, "%i", args);}],
1662 [],, [ac_c99_stdio=no])
1663 AC_MSG_RESULT($ac_c99_stdio)
1665 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1667 AC_MSG_CHECKING([for lldiv_t declaration])
1668 AC_CACHE_VAL(ac_c99_lldiv_t, [
1669 AC_TRY_COMPILE([#include <stdlib.h>],
1671 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1673 AC_MSG_RESULT($ac_c99_lldiv_t)
1675 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1676 AC_TRY_COMPILE([#include <stdlib.h>],
1677 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1678 AC_TRY_COMPILE([#include <stdlib.h>],
1679 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1680 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1681 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1682 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1683 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1684 if test x"$ac_c99_lldiv_t" = x"no"; then
1687 AC_MSG_RESULT($ac_c99_stdlib)
1689 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1690 # XXX the wchar.h checks should be rolled into the general C99 bits.
1692 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1693 AC_TRY_COMPILE([#include <wchar.h>],
1694 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1695 AC_TRY_COMPILE([#include <wchar.h>],
1696 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1697 AC_TRY_COMPILE([#include <wchar.h>],
1698 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1699 AC_MSG_RESULT($ac_c99_wchar)
1701 AC_MSG_CHECKING([for enabled ISO C99 support])
1702 if test x"$ac_c99_math" = x"no" ||
1703 test x"$ac_c99_stdio" = x"no" ||
1704 test x"$ac_c99_stdlib" = x"no" ||
1705 test x"$ac_c99_wchar" = x"no"; then
1708 AC_MSG_RESULT($enable_c99)
1710 # Option parsed, now set things appropriately
1711 if test x"$enable_c99" = x"yes"; then
1712 AC_DEFINE(_GLIBCPP_USE_C99)
1720 dnl Check for template specializations for the 'long long' type extension.
1721 dnl The result determines only whether 'long long' I/O is enabled; things
1722 dnl like numeric_limits<> specializations are always available.
1724 dnl GLIBCPP_ENABLE_LONG_LONG
1725 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1726 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1727 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1728 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1729 dnl defaults to `no'.
1730 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1732 dnl GLIBCPP_ENABLE_LONG_LONG
1733 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1734 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1736 AC_ARG_ENABLE(long-long,
1737 changequote(<<, >>)dnl
1738 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1739 changequote([, ])dnl
1740 [case "$enableval" in
1741 yes) enable_long_long=yes ;;
1742 no) enable_long_long=no ;;
1743 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1745 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1750 AC_MSG_CHECKING([for enabled long long I/O support])
1751 # iostreams require strtoll, strtoull to compile
1752 AC_TRY_COMPILE([#include <stdlib.h>],
1753 [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1754 AC_TRY_COMPILE([#include <stdlib.h>],
1755 [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1757 # Option parsed, now set things appropriately
1758 if test x"$enable_long_long" = xyes; then
1759 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1761 AC_MSG_RESULT($enable_long_long)
1768 dnl Check for what type of C headers to use.
1770 dnl GLIBCPP_ENABLE_CHEADERS
1771 dnl --enable-cheaders= [does stuff].
1772 dnl --disable-cheaders [does not do anything, really].
1773 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1774 dnl Where DEFAULT is either `c' or `c_std'.
1775 dnl If ommitted, it defaults to `c_std'.
1776 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1777 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1778 AC_MSG_CHECKING([for c header strategy to use])
1779 AC_ARG_ENABLE(cheaders,
1780 changequote(<<, >>)dnl
1781 << --enable-cheaders=MODEL construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1783 [case "$enableval" in
1788 enable_cheaders=c_std
1790 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1793 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1794 AC_MSG_RESULT($enable_cheaders)
1796 dnl Option parsed, now set things appropriately
1797 case "$enable_cheaders" in
1799 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1802 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1806 AC_SUBST(C_INCLUDE_DIR)
1807 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C, test "$enable_cheaders" = c)
1808 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C_STD, test "$enable_cheaders" = c_std)
1809 AM_CONDITIONAL(GLIBCPP_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes)
1814 dnl Check for wide character support. Has the same effect as the option
1815 dnl in gcc's configure, but in a form that autoconf can mess with.
1817 dnl GLIBCPP_ENABLE_C_MBCHAR
1818 dnl --enable-c-mbchar requests all the wchar_t stuff.
1819 dnl --disable-c-mbchar doesn't.
1820 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1821 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1822 dnl defaults to `no'.
1823 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1824 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1825 AC_ARG_ENABLE(c-mbchar,
1826 changequote(<<, >>)dnl
1827 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1828 changequote([, ])dnl
1829 [case "$enableval" in
1830 yes) enable_c_mbchar=yes ;;
1831 no) enable_c_mbchar=no ;;
1832 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1834 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1835 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1840 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1842 dnl TOPLEVEL_INCLUDES
1843 dnl LIBMATH_INCLUDES
1844 dnl LIBSUPCXX_INCLUDES
1847 dnl GLIBCPP_EXPORT_INCLUDES
1848 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1849 # Root level of the build directory include sources.
1850 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1852 # Passed down for canadian crosses.
1853 if test x"$CANADIAN" = xyes; then
1854 TOPLEVEL_INCLUDES='-I$(includedir)'
1857 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1859 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1861 if test x"$need_libio" = xyes; then
1862 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1863 AC_SUBST(LIBIO_INCLUDES)
1866 # Now, export this to all the little Makefiles....
1867 AC_SUBST(GLIBCPP_INCLUDES)
1868 AC_SUBST(TOPLEVEL_INCLUDES)
1869 AC_SUBST(LIBMATH_INCLUDES)
1870 AC_SUBST(LIBSUPCXX_INCLUDES)
1875 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1877 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1878 # Optimization flags that are probably a good idea for thrill-seekers. Just
1879 # uncomment the lines below and make, everything else is ready to go...
1880 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1882 AC_SUBST(OPTIMIZE_CXXFLAGS)
1884 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1885 AC_SUBST(WARN_FLAGS)
1889 dnl GLIBCPP_EXPORT_INSTALL_INFO
1890 dnl calculates gxx_install_dir
1891 dnl exports glibcpp_toolexecdir
1892 dnl exports glibcpp_toolexeclibdir
1893 dnl exports glibcpp_prefixdir
1895 dnl Assumes cross_compiling bits already done, and with_cross_host in
1898 dnl GLIBCPP_EXPORT_INSTALL_INFO
1899 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1900 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1901 # exported correctly in GLIBCPP_CONFIGURE.
1902 glibcpp_toolexecdir=no
1903 glibcpp_toolexeclibdir=no
1904 glibcpp_prefixdir=${prefix}
1906 # Process the option --with-gxx-include-dir=<path to include-files directory>
1907 AC_MSG_CHECKING([for --with-gxx-include-dir])
1908 AC_ARG_WITH(gxx-include-dir,
1909 [ --with-gxx-include-dir the installation directory for include files],
1910 [case "${withval}" in
1912 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1919 gxx_include_dir=${withval}
1921 esac], [gxx_include_dir=no])
1922 AC_MSG_RESULT($gxx_include_dir)
1924 # Process the option "--enable-version-specific-runtime-libs"
1925 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1926 AC_ARG_ENABLE(version-specific-runtime-libs,
1927 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1928 [case "$enableval" in
1929 yes) version_specific_libs=yes ;;
1930 no) version_specific_libs=no ;;
1931 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
1933 version_specific_libs=no)dnl
1934 # Option set, now we can test it.
1935 AC_MSG_RESULT($version_specific_libs)
1937 # Default case for install directory for include files.
1938 if test $version_specific_libs = no && test $gxx_include_dir = no; then
1939 gxx_include_dir='$(prefix)'/include/c++/${gcc_version}
1942 # Version-specific runtime libs processing.
1943 if test $version_specific_libs = yes; then
1944 # Need the gcc compiler version to know where to install libraries
1945 # and header files if --enable-version-specific-runtime-libs option
1947 if test x"$gxx_include_dir" = x"no"; then
1948 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++
1950 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1951 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1954 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1955 # Install a library built with a cross compiler in tooldir, not libdir.
1956 if test x"$glibcpp_toolexecdir" = x"no"; then
1957 if test -n "$with_cross_host" &&
1958 test x"$with_cross_host" != x"no"; then
1959 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1960 glibcpp_toolexeclibdir='$(toolexecdir)/lib'
1962 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1963 glibcpp_toolexeclibdir='$(libdir)'
1965 multi_os_directory=`$CC -print-multi-os-directory`
1966 case $multi_os_directory in
1967 .) ;; # Avoid trailing /.
1968 *) glibcpp_toolexeclibdir=$glibcpp_toolexeclibdir/$multi_os_directory ;;
1972 AC_MSG_CHECKING([for install location])
1973 AC_MSG_RESULT($gxx_include_dir)
1975 AC_SUBST(glibcpp_prefixdir)
1976 AC_SUBST(gxx_include_dir)
1977 AC_SUBST(glibcpp_toolexecdir)
1978 AC_SUBST(glibcpp_toolexeclibdir)
1982 # Check for functions in math library.
1983 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1985 # This file can be copied and used freely without restrictions. It can
1986 # be used in projects which are not available under the GNU Public License
1987 # but which still want to provide support for the GNU gettext functionality.
1988 # Please note that the actual code is *not* freely available.
1992 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1993 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1994 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
1997 dnl This macro searches for a GNU version of make. If a match is found, the
1998 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1999 dnl set to "#". This is useful for including a special features in a Makefile,
2000 dnl which cannot be handled by other versions of make. The variable
2001 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
2002 dnl the empty string otherwise.
2004 dnl Here is an example of its use:
2006 dnl Makefile.in might contain:
2008 dnl # A failsafe way of putting a dependency rule into a makefile
2010 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
2012 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
2013 dnl @ifGNUmake@ include $(DEPEND)
2014 dnl @ifGNUmake@ endif
2016 dnl Then configure.in would normally contain:
2018 dnl CHECK_GNU_MAKE()
2019 dnl AC_OUTPUT(Makefile)
2021 dnl Then perhaps to cause gnu make to override any other make, we could do
2022 dnl something like this (note that GNU make always looks for GNUmakefile first):
2024 dnl if ! test x$_cv_gnu_make_command = x ; then
2025 dnl mv Makefile GNUmakefile
2026 dnl echo .DEFAULT: > Makefile ;
2027 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
2030 dnl Then, if any (well almost any) other make is called, and GNU make also
2031 dnl exists, then the other make wraps the GNU make.
2033 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
2034 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
2036 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
2037 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
2038 dnl #### conditional's subshell (" --version" is not a command), using a
2039 dnl #### different option to grep(1).
2041 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
2042 dnl #### ${MAKE:-make}).
2045 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
2046 _cv_gnu_make_command='' ;
2047 dnl Search all the common names for GNU make
2048 for a in "${MAKE-make}" make gmake gnumake ; do
2049 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
2051 _cv_gnu_make_command=$a ;
2056 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
2057 dnl string, '#' otherwise
2058 if test "x$_cv_gnu_make_command" != "x" ; then
2067 dnl Check for headers for, and arguments to, the setrlimit() function.
2068 dnl Used only in testsuite_hooks.h.
2069 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
2070 AC_TRY_COMPILE([#include <unistd.h>
2071 #include <sys/time.h>
2072 #include <sys/resource.h>
2073 ], [ int f = RLIMIT_$1 ; ],
2074 [glibcpp_mresult=1], [glibcpp_mresult=0])
2075 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
2076 [Only used in build directory testsuite_hooks.h.])
2078 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
2079 setrlimit_have_headers=yes
2080 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
2082 setrlimit_have_headers=no)
2083 # If don't have the headers, then we can't run the tests now, and we
2084 # won't be seeing any of these during testsuite compilation.
2085 if test $setrlimit_have_headers = yes; then
2086 # Can't do these in a loop, else the resulting syntax is wrong.
2087 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
2088 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
2089 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
2090 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
2092 # Check for rlimit, setrlimit.
2093 AC_CACHE_VAL(ac_setrlimit, [
2094 AC_TRY_COMPILE([#include <unistd.h>
2095 #include <sys/time.h>
2096 #include <sys/resource.h>
2098 [ struct rlimit r; setrlimit(0, &r);],
2099 [ac_setrlimit=yes], [ac_setrlimit=no])
2103 AC_MSG_CHECKING([for testsuite memory limit support])
2104 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
2106 AC_DEFINE(_GLIBCPP_MEM_LIMITS)
2110 AC_MSG_RESULT($ac_mem_limits)
2115 dnl Does any necessary configuration of the testsuite directory. Generates
2116 dnl the testsuite_hooks.h header.
2118 dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
2119 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
2120 GLIBCPP_CHECK_SETRLIMIT
2122 # Look for setenv, so that extended locale tests can be performed.
2123 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
2125 # Export file names for ABI checking.
2126 baseline_file="${glibcpp_srcdir}/config/abi/${abi_baseline_triplet}/baseline_symbols.txt"
2127 AC_SUBST(baseline_file)
2130 *-*-cygwin* ) enable_abi_check=no ;;
2131 * ) enable_abi_check=yes ;;
2134 # Don't do ABI checking unless native.
2135 AM_CONDITIONAL(GLIBCPP_BUILD_ABI_CHECK,
2136 test x"$build" = x"$host" && test -z "$with_cross_host" \
2137 && test "$enable_abi_check" = yes )
2141 sinclude(../libtool.m4)
2142 dnl The lines below arrange for aclocal not to bring an installed
2143 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
2144 dnl add a definition of LIBTOOL to Makefile.in.
2145 ifelse(,,,[AC_SUBST(LIBTOOL)
2146 AC_DEFUN([AM_PROG_LIBTOOL])
2147 AC_DEFUN([AC_LIBTOOL_DLOPEN])
2148 AC_DEFUN([AC_PROG_LD])
2152 dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>.
2155 AC_DEFUN(GLIBCPP_CHECK_S_ISREG_OR_S_IFREG, [
2156 AC_CACHE_VAL(glibcpp_cv_S_ISREG, [
2157 AC_TRY_LINK([#include <sys/stat.h>],
2158 [struct stat buffer; fstat(0, &buffer); S_ISREG(buffer.st_mode); ],
2159 [glibcpp_cv_S_ISREG=yes],
2160 [glibcpp_cv_S_ISREG=no])
2162 AC_CACHE_VAL(glibcpp_cv_S_IFREG, [
2163 AC_TRY_LINK([#include <sys/stat.h>],
2164 [struct stat buffer; fstat(0, &buffer); S_IFREG & buffer.st_mode; ],
2165 [glibcpp_cv_S_IFREG=yes],
2166 [glibcpp_cv_S_IFREG=no])
2168 if test x$glibcpp_cv_S_ISREG = xyes; then
2169 AC_DEFINE(HAVE_S_ISREG)
2170 elif test x$glibcpp_cv_S_IFREG = xyes; then
2171 AC_DEFINE(HAVE_S_IFREG)
2176 dnl Check whether poll is available in <poll.h>.
2179 AC_DEFUN(GLIBCPP_CHECK_POLL, [
2180 AC_CACHE_VAL(glibcpp_cv_POLL, [
2181 AC_TRY_COMPILE([#include <poll.h>],
2182 [struct pollfd pfd[1]; pfd[0].events = POLLIN; poll(pfd, 1, 0); ],
2183 [glibcpp_cv_POLL=yes],
2184 [glibcpp_cv_POLL=no])
2186 if test x$glibcpp_cv_POLL = xyes; then
2187 AC_DEFINE(HAVE_POLL)
2191 # Check whether LC_MESSAGES is available in <locale.h>.
2192 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2194 # This file file be copied and used freely without restrictions. It can
2195 # be used in projects which are not available under the GNU Public License
2196 # but which still want to provide support for the GNU gettext functionality.
2197 # Please note that the actual code is *not* freely available.
2201 AC_DEFUN(AC_LC_MESSAGES, [
2202 AC_CHECK_HEADER(locale.h, [
2203 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
2204 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2205 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
2206 if test $ac_cv_val_LC_MESSAGES = yes; then
2207 AC_DEFINE(HAVE_LC_MESSAGES)
2214 dnl Check for whether the Boost-derived checks should be turned on.
2216 dnl GLIBCPP_ENABLE_CONCEPT_CHECKS
2217 dnl --enable-concept-checks turns them on.
2218 dnl --disable-concept-checks leaves them off.
2219 dnl + Usage: GLIBCPP_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2220 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2221 dnl defaults to `no'.
2222 AC_DEFUN(GLIBCPP_ENABLE_CONCEPT_CHECKS, [dnl
2223 define([GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
2224 AC_ARG_ENABLE(concept-checks,
2225 changequote(<<, >>)dnl
2226 << --enable-concept-checks use Boost-derived template checks [default=>>GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT],
2227 changequote([, ])dnl
2228 [case "$enableval" in
2229 yes) enable_concept_checks=yes ;;
2230 no) enable_concept_checks=no ;;
2231 *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
2233 enable_concept_checks=GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
2234 dnl Option parsed, now set things appropriately
2235 if test x"$enable_concept_checks" = xyes; then
2236 AC_DEFINE(_GLIBCPP_CONCEPT_CHECKS)
2242 dnl Add version tags to symbols in shared library (or not), additionally
2243 dnl marking other symbols as private/local (or not).
2245 dnl GLIBCPP_ENABLE_SYMVERS
2246 dnl --enable-symvers=style adds a version script to the linker call when
2247 dnl creating the shared library. The choice of version script is
2248 dnl controlled by 'style'.
2249 dnl --disable-symvers does not.
2250 dnl + Usage: GLIBCPP_ENABLE_SYMVERS[(DEFAULT)]
2251 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2252 dnl defaults to `no'. Passing `yes' tries to choose a default style
2253 dnl based on linker characteristics. Passing 'no' disables versioning.
2254 AC_DEFUN(GLIBCPP_ENABLE_SYMVERS, [dnl
2255 define([GLIBCPP_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl
2256 AC_ARG_ENABLE(symvers,
2257 changequote(<<, >>)dnl
2258 << --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCPP_ENABLE_SYMVERS_DEFAULT],
2259 changequote([, ])dnl
2260 [case "$enableval" in
2261 yes) enable_symvers=yes ;;
2262 no) enable_symvers=no ;;
2263 # other names here, just as sanity checks
2264 #gnu|sun|etcetera) enable_symvers=$enableval ;;
2265 gnu) enable_symvers=$enableval ;;
2266 *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;;
2268 enable_symvers=GLIBCPP_ENABLE_SYMVERS_DEFAULT)dnl
2270 # If we never went through the GLIBCPP_CHECK_LINKER_FEATURES macro, then we
2271 # don't know enough about $LD to do tricks...
2272 if test x$enable_shared = xno ||
2274 test x$glibcpp_gnu_ld_version = x; then
2278 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
2279 if test $enable_symvers != no; then
2280 AC_MSG_CHECKING([for shared libgcc])
2281 ac_save_CFLAGS="$CFLAGS"
2283 AC_TRY_LINK(, [return 0], glibcpp_shared_libgcc=yes, glibcpp_shared_libgcc=no)
2284 CFLAGS="$ac_save_CFLAGS"
2285 AC_MSG_RESULT($glibcpp_shared_libgcc)
2288 # For GNU ld, we need at least this version. It's 2.12 in the same format
2289 # as the tested-for version. See GLIBCPP_CHECK_LINKER_FEATURES for more.
2290 glibcpp_min_gnu_ld_version=21200
2292 # Check to see if unspecified "yes" value can win, given results
2294 if test $enable_symvers = yes ; then
2295 if test $with_gnu_ld = yes &&
2296 test $glibcpp_shared_libgcc = yes ;
2298 if test $glibcpp_gnu_ld_version -ge $glibcpp_min_gnu_ld_version ; then
2301 ac_test_CFLAGS="${CFLAGS+set}"
2302 ac_save_CFLAGS="$CFLAGS"
2303 CFLAGS='-shared -Wl,--version-script,conftest.map'
2306 echo 'FOO { global: f[a-z]o; local: *; };' > conftest.map
2308 AC_TRY_LINK([int foo;],, enable_symvers=gnu)
2309 if test "$ac_test_CFLAGS" = set; then
2310 CFLAGS="$ac_save_CFLAGS"
2312 # this is the suspicious part
2323 dnl Everything parsed; figure out what file to use.
2324 case $enable_symvers in
2326 SYMVER_MAP=config/linker-map.dummy
2329 SYMVER_MAP=config/linker-map.gnu
2330 AC_DEFINE(_GLIBCPP_SYMVER)
2334 AC_SUBST(SYMVER_MAP)
2335 AM_CONDITIONAL(GLIBCPP_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
2336 AC_MSG_CHECKING([versioning on shared library symbols])
2337 AC_MSG_RESULT($enable_symvers)
2341 # isc-posix.m4 serial 2 (gettext-0.11.2)
2342 dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
2343 dnl This file is free software, distributed under the terms of the GNU
2344 dnl General Public License. As a special exception to the GNU General
2345 dnl Public License, this file may be distributed as part of a program
2346 dnl that contains a configuration script generated by Autoconf, under
2347 dnl the same distribution terms as the rest of that program.
2349 # This file is not needed with autoconf-2.53 and newer. Remove it in 2005.
2351 # This test replaces the one in autoconf.
2352 # Currently this macro should have the same name as the autoconf macro
2353 # because gettext's gettext.m4 (distributed in the automake package)
2354 # still uses it. Otherwise, the use in gettext.m4 makes autoheader
2355 # give these diagnostics:
2356 # configure.in:556: AC_TRY_COMPILE was called before AC_ISC_POSIX
2357 # configure.in:556: AC_TRY_RUN was called before AC_ISC_POSIX
2359 undefine([AC_ISC_POSIX])
2361 AC_DEFUN([AC_ISC_POSIX],
2363 dnl This test replaces the obsolescent AC_ISC_POSIX kludge.
2364 AC_CHECK_LIB(cposix, strerror, [LIBS="$LIBS -lcposix"])
2368 # Add --enable-maintainer-mode option to configure.
2373 AC_DEFUN([AM_MAINTAINER_MODE],
2374 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2375 dnl maintainer-mode is disabled by default
2376 AC_ARG_ENABLE(maintainer-mode,
2377 [ --enable-maintainer-mode enable make rules and dependencies not useful
2378 (and sometimes confusing) to the casual installer],
2379 USE_MAINTAINER_MODE=$enableval,
2380 USE_MAINTAINER_MODE=no)
2381 AC_MSG_RESULT($USE_MAINTAINER_MODE)
2382 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
2383 MAINT=$MAINTAINER_MODE_TRUE
2388 # Define a conditional.
2390 AC_DEFUN([AM_CONDITIONAL],
2401 # Do all the work for Automake. This macro actually does too much --
2402 # some checks are only needed if your package does certain things.
2403 # But this isn't really a big deal.
2408 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
2410 AC_DEFUN([AM_INIT_AUTOMAKE],
2411 [AC_REQUIRE([AM_SET_CURRENT_AUTOMAKE_VERSION])dnl
2412 AC_REQUIRE([AC_PROG_INSTALL])
2417 dnl test to see if srcdir already configured
2418 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
2419 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
2422 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
2423 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
2424 AC_REQUIRE([AM_SANITY_CHECK])
2425 AC_REQUIRE([AC_ARG_PROGRAM])
2426 dnl FIXME This is truly gross.
2427 missing_dir=`cd $ac_aux_dir && pwd`
2428 AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version}, $missing_dir)
2429 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
2430 AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version}, $missing_dir)
2431 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
2432 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
2433 AC_REQUIRE([AC_PROG_MAKE_SET])])
2435 # Copyright 2002 Free Software Foundation, Inc.
2437 # This program is free software; you can redistribute it and/or modify
2438 # it under the terms of the GNU General Public License as published by
2439 # the Free Software Foundation; either version 2, or (at your option)
2440 # any later version.
2442 # This program is distributed in the hope that it will be useful,
2443 # but WITHOUT ANY WARRANTY; without even the implied warranty of
2444 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2445 # GNU General Public License for more details.
2447 # You should have received a copy of the GNU General Public License
2448 # along with this program; if not, write to the Free Software
2449 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
2451 # AM_AUTOMAKE_VERSION(VERSION)
2452 # ----------------------------
2453 # Automake X.Y traces this macro to ensure aclocal.m4 has been
2454 # generated from the m4 files accompanying Automake X.Y.
2455 AC_DEFUN([AM_AUTOMAKE_VERSION],[am__api_version="1.4"])
2457 # AM_SET_CURRENT_AUTOMAKE_VERSION
2458 # -------------------------------
2459 # Call AM_AUTOMAKE_VERSION so it can be traced.
2460 # This function is AC_REQUIREd by AC_INIT_AUTOMAKE.
2461 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
2462 [AM_AUTOMAKE_VERSION([1.4-p6])])
2465 # Check to make sure that the build environment is sane.
2468 AC_DEFUN([AM_SANITY_CHECK],
2469 [AC_MSG_CHECKING([whether build environment is sane])
2472 echo timestamp > conftestfile
2473 # Do `set' in a subshell so we don't clobber the current shell's
2474 # arguments. Must try -L first in case configure is actually a
2475 # symlink; some systems play weird games with the mod time of symlinks
2476 # (eg FreeBSD returns the mod time of the symlink's containing
2479 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
2480 if test "[$]*" = "X"; then
2482 set X `ls -t $srcdir/configure conftestfile`
2484 if test "[$]*" != "X $srcdir/configure conftestfile" \
2485 && test "[$]*" != "X conftestfile $srcdir/configure"; then
2487 # If neither matched, then we have a broken ls. This can happen
2488 # if, for instance, CONFIG_SHELL is bash and it inherits a
2489 # broken ls alias from the environment. This has actually
2490 # happened. Such a system could not be considered "sane".
2491 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
2492 alias in your environment])
2495 test "[$]2" = conftestfile
2501 AC_MSG_ERROR([newly created file is older than distributed files!
2502 Check your system clock])
2505 AC_MSG_RESULT(yes)])
2507 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
2508 dnl The program must properly implement --version.
2509 AC_DEFUN([AM_MISSING_PROG],
2510 [AC_MSG_CHECKING(for working $2)
2511 # Run test in a subshell; some versions of sh will print an error if
2512 # an executable is not found, even if stderr is redirected.
2513 # Redirect stdin to placate older versions of autoconf. Sigh.
2514 if ($2 --version) < /dev/null > /dev/null 2>&1; then
2516 AC_MSG_RESULT(found)
2519 AC_MSG_RESULT(missing)
2523 # Like AC_CONFIG_HEADER, but automatically create stamp file.
2525 AC_DEFUN([AM_CONFIG_HEADER],
2527 AC_CONFIG_HEADER([$1])
2528 dnl When config.status generates a header, we must update the stamp-h file.
2529 dnl This file resides in the same directory as the config header
2530 dnl that is generated. We must strip everything past the first ":",
2531 dnl and everything past the last "/".
2532 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
2533 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
2534 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
2536 for am_file in <<$1>>; do
2537 case " <<$>>CONFIG_HEADERS " in
2538 *" <<$>>am_file "*<<)>>
2539 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
2542 am_indx=`expr "<<$>>am_indx" + 1`