1 dnl aclocal.m4 generated automatically by aclocal 1.4-p5
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 Check to see if the (unistd function) argument passed is
607 dnl 1) declared when using the c++ compiler
608 dnl 2) has "C" linkage
610 dnl argument 1 is name of function to check
612 dnl ASSUMES argument is a function with ONE parameter
614 dnl GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1
615 AC_DEFUN(GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1, [
616 AC_MSG_CHECKING([for $1 declaration])
617 if test x${glibcpp_cv_func_$1_use+set} != xset; then
618 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
621 AC_TRY_COMPILE([#include <unistd.h>],
623 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
627 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
628 if test x$glibcpp_cv_func_$1_use = x"yes"; then
634 dnl Because the builtins are picky picky picky about the arguments they take,
635 dnl do an explict linkage tests here.
636 dnl Check to see if the (math function) argument passed is
637 dnl 1) declared when using the c++ compiler
638 dnl 2) has "C" linkage
640 dnl Define HAVE_CARGF etc if "cargf" is declared and links
642 dnl argument 1 is name of function to check
644 dnl ASSUMES argument is a math function with ONE parameter
646 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
647 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
648 AC_MSG_CHECKING([for $1 declaration])
649 if test x${glibcpp_cv_func_$1_use+set} != xset; then
650 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
653 AC_TRY_COMPILE([#include <math.h>],
655 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
659 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
660 if test x$glibcpp_cv_func_$1_use = x"yes"; then
661 AC_MSG_CHECKING([for $1 linkage])
662 if test x${glibcpp_cv_func_$1_link+set} != xset; then
663 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
664 AC_TRY_LINK([#include <math.h>],
666 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
669 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
670 if test x$glibcpp_cv_func_$1_link = x"yes"; then
671 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
672 AC_DEFINE_UNQUOTED(${ac_tr_func})
679 dnl Check to see what builtin math functions are supported
681 dnl check for __builtin_abs
682 dnl check for __builtin_fabsf
683 dnl check for __builtin_fabs
684 dnl check for __builtin_fabl
685 dnl check for __builtin_labs
686 dnl check for __builtin_sqrtf
687 dnl check for __builtin_sqrtl
688 dnl check for __builtin_sqrt
689 dnl check for __builtin_sinf
690 dnl check for __builtin_sin
691 dnl check for __builtin_sinl
692 dnl check for __builtin_cosf
693 dnl check for __builtin_cos
694 dnl check for __builtin_cosl
696 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
697 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
698 dnl Test for builtin math functions.
699 dnl These are made in gcc/c-common.c
700 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
701 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
702 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
703 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
704 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
706 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
707 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
708 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
710 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
711 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
712 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
714 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
715 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
716 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
718 dnl There is, without a doubt, a more elegant way to have these
719 dnl names exported so that they won't be stripped out of acconfig.h by
720 dnl autoheader. I leave this as an exercise to somebody less frustrated
721 dnl than I.... please email the libstdc++ list if you can figure out a
722 dnl more elegant approach (see autoconf/acgen.m4 and specifically
723 dnl AC_CHECK_FUNC for things to steal.)
725 if test x$dummyvar = x"yes"; then
726 AC_DEFINE(HAVE___BUILTIN_ABS)
727 AC_DEFINE(HAVE___BUILTIN_LABS)
728 AC_DEFINE(HAVE___BUILTIN_COS)
729 AC_DEFINE(HAVE___BUILTIN_COSF)
730 AC_DEFINE(HAVE___BUILTIN_COSL)
731 AC_DEFINE(HAVE___BUILTIN_FABS)
732 AC_DEFINE(HAVE___BUILTIN_FABSF)
733 AC_DEFINE(HAVE___BUILTIN_FABSL)
734 AC_DEFINE(HAVE___BUILTIN_SIN)
735 AC_DEFINE(HAVE___BUILTIN_SINF)
736 AC_DEFINE(HAVE___BUILTIN_SINL)
737 AC_DEFINE(HAVE___BUILTIN_SQRT)
738 AC_DEFINE(HAVE___BUILTIN_SQRTF)
739 AC_DEFINE(HAVE___BUILTIN_SQRTL)
744 dnl Check to see what the underlying c library is like
745 dnl These checks need to do two things:
746 dnl 1) make sure the name is declared when using the c++ compiler
747 dnl 2) make sure the name has "C" linkage
748 dnl This might seem like overkill but experience has shown that it's not...
750 dnl Define HAVE_STRTOLD if "strtold" is declared and links
751 dnl Define HAVE_STRTOF if "strtof" is declared and links
752 dnl Define HAVE_DRAND48 if "drand48" is declared and links
754 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
755 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
756 ac_test_CXXFLAGS="${CXXFLAGS+set}"
757 ac_save_CXXFLAGS="$CXXFLAGS"
758 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
760 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
761 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
762 AC_CHECK_FUNCS(drand48)
764 CXXFLAGS="$ac_save_CXXFLAGS"
768 dnl Check to see what the underlying c library is like
769 dnl These checks need to do two things:
770 dnl 1) make sure the name is declared when using the c++ compiler
771 dnl 2) make sure the name has "C" linkage
772 dnl This might seem like overkill but experience has shown that it's not...
774 dnl Define HAVE_ISATTY if "isatty" is declared and links
776 dnl GLIBCPP_CHECK_UNISTD_SUPPORT
777 AC_DEFUN(GLIBCPP_CHECK_UNISTD_SUPPORT, [
778 ac_test_CXXFLAGS="${CXXFLAGS+set}"
779 ac_save_CXXFLAGS="$CXXFLAGS"
780 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
782 GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1(isatty)
784 CXXFLAGS="$ac_save_CXXFLAGS"
788 dnl Check to see what the underlying c library or math library is like.
789 dnl These checks need to do two things:
790 dnl 1) make sure the name is declared when using the c++ compiler
791 dnl 2) make sure the name has "C" linkage
792 dnl This might seem like overkill but experience has shown that it's not...
794 dnl Define HAVE_CARGF etc if "cargf" is found.
796 dnl GLIBCPP_CHECK_MATH_SUPPORT
797 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
798 ac_test_CXXFLAGS="${CXXFLAGS+set}"
799 ac_save_CXXFLAGS="$CXXFLAGS"
800 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
803 AC_CHECK_LIB(m, sin, libm="-lm")
807 dnl Check to see if certain C math functions exist.
808 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
809 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
810 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
811 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
812 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
813 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
814 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
815 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
817 dnl Check to see if basic C math functions have float versions.
818 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
823 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
826 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
827 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
828 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
829 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
830 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
831 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
832 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
833 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
834 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
835 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
836 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
837 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
838 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
839 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
840 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
841 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
843 dnl Check to see if basic C math functions have long double versions.
844 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
849 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
852 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
853 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
854 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
855 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
856 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
857 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
858 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
859 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
860 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
861 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
862 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
863 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
864 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
865 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
866 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
867 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
868 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
870 dnl Some runtimes have these functions with a preceding underscore. Please
871 dnl keep this sync'd with the one above. And if you add any new symbol,
872 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
873 dnl Check to see if certain C math functions exist.
875 dnl Check to see if basic C math functions have float versions.
876 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
878 _acosf _asinf _atanf \
880 _coshf _sinhf _tanhf)
881 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
885 dnl Check to see if basic C math functions have long double versions.
886 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
888 _acosl _asinl _atanl \
890 _coshl _sinhl _tanhl)
891 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
896 CXXFLAGS="$ac_save_CXXFLAGS"
901 dnl Check to see if there is native support for complex
903 dnl Don't compile bits in math/* if native support exits.
905 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
907 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
908 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
909 dnl Check for complex versions of math functions of platform.
910 AC_CHECK_LIB(m, main)
911 AC_REPLACE_MATHFUNCS(nan copysignf)
913 dnl For __signbit to signbit conversions.
914 AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
915 AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
917 dnl Compile the long double complex functions only if the function
918 dnl provides the non-complex long double functions that are needed.
919 dnl Currently this includes copysignl, which should be
920 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
921 if test x$ac_cv_func_copysignl = x"yes"; then
922 AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
925 if test -n "$LIBMATHOBJS"; then
928 AC_SUBST(LIBMATHOBJS)
929 AM_CONDITIONAL(GLIBCPP_BUILD_LIBMATH, test "$need_libmath" = yes)
933 dnl Check to see what architecture and operating system we are compiling
934 dnl for. Also, if architecture- or OS-specific flags are required for
935 dnl compilation, pick them up here.
937 dnl GLIBCPP_CHECK_TARGET
938 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
939 . [$]{glibcpp_basedir}/configure.target
940 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
941 AC_MSG_RESULT(OS config directory is $os_include_dir)
946 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
947 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
948 dnl must have been previously checked.)
950 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
951 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
953 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
954 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
956 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
957 dnl others even if wchar_t support is not on.
958 AC_MSG_CHECKING([for mbstate_t])
959 AC_TRY_COMPILE([#include <wchar.h>],
960 [mbstate_t teststate;],
961 have_mbstate_t=yes, have_mbstate_t=no)
962 AC_MSG_RESULT($have_mbstate_t)
963 if test x"$have_mbstate_t" = xyes; then
964 AC_DEFINE(HAVE_MBSTATE_T)
967 dnl Sanity check for existence of ISO C99 headers for extended encoding.
968 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
969 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
971 dnl Only continue checking if the ISO C99 headers exist and support is on.
972 if test x"$ac_has_wchar_h" = xyes &&
973 test x"$ac_has_wctype_h" = xyes &&
974 test x"$enable_c_mbchar" != xno; then
976 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
977 dnl numeric_limits can instantiate type_traits<wchar_t>
978 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
979 AC_TRY_COMPILE([#include <wchar.h>],
980 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
981 has_wchar_minmax=yes, has_wchar_minmax=no)
982 AC_MSG_RESULT($has_wchar_minmax)
984 dnl Test wchar.h for WEOF, which is what we use to determine whether
985 dnl to specialize for char_traits<wchar_t> or not.
986 AC_MSG_CHECKING([for WEOF])
989 #include <stddef.h>],
991 has_weof=yes, has_weof=no)
992 AC_MSG_RESULT($has_weof)
994 dnl Tests for wide character functions used in char_traits<wchar_t>.
996 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
999 dnl Checks for names injected into std:: by the c_std headers.
1000 AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
1001 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
1002 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
1003 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
1004 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
1005 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
1008 AC_MSG_CHECKING([for ISO C99 wchar_t support])
1009 if test x"$has_weof" = xyes &&
1010 test x"$has_wchar_minmax" = xyes &&
1011 test x"$ac_wfuncs" = xyes; then
1012 ac_isoC99_wchar_t=yes
1014 ac_isoC99_wchar_t=no
1016 AC_MSG_RESULT($ac_isoC99_wchar_t)
1018 dnl Use iconv for wchar_t to char conversions. As such, check for
1019 dnl X/Open Portability Guide, version 2 features (XPG2).
1020 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1021 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1023 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1024 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1025 ac_save_LIBS="$LIBS"
1026 LIBS="$LIBS $libiconv"
1028 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1029 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1031 LIBS="$ac_save_LIBS"
1033 AC_MSG_CHECKING([for XPG2 wchar_t support])
1034 if test x"$ac_has_iconv_h" = xyes &&
1035 test x"$ac_has_langinfo_h" = xyes &&
1036 test x"$ac_XPG2funcs" = xyes; then
1041 AC_MSG_RESULT($ac_XPG2_wchar_t)
1043 dnl At the moment, only enable wchar_t specializations if all the
1044 dnl above support is present.
1045 AC_MSG_CHECKING([for enabled wchar_t specializations])
1046 if test x"$ac_isoC99_wchar_t" = xyes &&
1047 test x"$ac_XPG2_wchar_t" = xyes; then
1048 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1049 AC_MSG_RESULT("yes")
1054 dnl Wide characters disabled by the user.
1055 AC_MSG_WARN([wchar_t support disabled.])
1061 dnl Check to see if debugging libraries are to be built.
1063 dnl GLIBCPP_ENABLE_DEBUG
1066 dnl builds a separate set of debugging libraries in addition to the
1067 dnl normal (shared, static) libstdc++ binaries.
1070 dnl builds only one (non-debug) version of libstdc++.
1072 dnl --enable-debug-flags=FLAGS
1073 dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
1075 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1076 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1077 dnl defaults to `no'.
1078 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1079 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1080 AC_ARG_ENABLE(debug,
1081 changequote(<<, >>)dnl
1082 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1083 changequote([, ])dnl
1084 [case "${enableval}" in
1085 yes) enable_debug=yes ;;
1086 no) enable_debug=no ;;
1087 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1089 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1090 AC_MSG_CHECKING([for additional debug build])
1091 AC_MSG_RESULT($enable_debug)
1092 AM_CONDITIONAL(GLIBCPP_BUILD_DEBUG, test "$enable_debug" = yes)
1096 dnl Check for explicit debug flags.
1098 dnl GLIBCPP_ENABLE_DEBUG_FLAGS
1100 dnl --enable-debug-flags='-O1'
1101 dnl is a general method for passing flags to be used when
1102 dnl building debug libraries with --enable-debug.
1104 dnl --disable-debug-flags does nothing.
1105 dnl + Usage: GLIBCPP_ENABLE_DEBUG_FLAGS(default flags)
1106 dnl If "default flags" is an empty string (or "none"), the effect is
1107 dnl the same as --disable or --enable=no.
1108 AC_DEFUN(GLIBCPP_ENABLE_DEBUG_FLAGS, [dnl
1109 define([GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1110 AC_ARG_ENABLE(debug_flags,
1111 changequote(<<, >>)dnl
1112 << --enable-debug-flags=FLAGS pass compiler FLAGS when building debug
1113 library;[default=>>GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT],
1114 changequote([, ])dnl
1115 [case "${enableval}" in
1117 -*) enable_debug_flags="${enableval}" ;;
1118 *) AC_MSG_ERROR([Unknown argument to extra debugging flags]) ;;
1120 enable_debug_flags=GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT)dnl
1122 dnl Option parsed, now set things appropriately
1123 case x"$enable_debug" in
1125 case "$enable_debug_flags" in
1127 DEBUG_FLAGS="-g3 -O0";;
1129 DEBUG_FLAGS="${enableval}"
1136 AC_SUBST(DEBUG_FLAGS)
1138 AC_MSG_CHECKING([for debug build flags])
1139 AC_MSG_RESULT($DEBUG_FLAGS)
1144 dnl Check for "unusual" flags to pass to the compiler while building.
1146 dnl GLIBCPP_ENABLE_CXX_FLAGS
1147 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1148 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1149 dnl Somehow this same set of flags must be passed when [re]building
1151 dnl --disable-cxx-flags passes nothing.
1152 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1153 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1154 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1155 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1156 dnl If "default flags" is an empty string (or "none"), the effect is
1157 dnl the same as --disable or --enable=no.
1158 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1159 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1160 AC_ARG_ENABLE(cxx_flags,
1161 changequote(<<, >>)dnl
1162 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1163 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1164 changequote([, ])dnl
1165 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1167 case "x$enable_cxx_flags" in
1169 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1171 enable_cxx_flags='' ;;
1173 enable_cxx_flags="$enableval" ;;
1176 dnl Run through flags (either default or command-line) and set anything
1177 dnl extra (e.g., #defines) that must accompany particular g++ options.
1178 if test -n "$enable_cxx_flags"; then
1179 for f in $enable_cxx_flags; do
1183 *) # and we're trying to pass /what/ exactly?
1184 AC_MSG_ERROR([compiler flags start with a -]) ;;
1188 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1189 AC_SUBST(EXTRA_CXX_FLAGS)
1194 dnl Check for which locale library to use: gnu or generic.
1196 dnl GLIBCPP_ENABLE_CLOCALE
1197 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1198 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1200 dnl default is generic
1202 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1203 AC_MSG_CHECKING([for clocale to use])
1204 AC_ARG_ENABLE(clocale,
1205 [ --enable-clocale enable model for target locale package.
1206 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1208 if test x$enable_clocale = xno; then
1213 enable_clocale_flag=$enable_clocale
1215 dnl Probe for locale support if no specific model is specified.
1216 dnl Default to "generic"
1217 if test x$enable_clocale_flag = xno; then
1218 case x${target_os} in
1220 AC_EGREP_CPP([_GLIBCPP_ok], [
1221 #include <features.h>
1222 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1225 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1227 # Test for bugs early in glibc-2.2.x series
1228 if test x$enable_clocale_flag = xgnu; then
1230 #define _GNU_SOURCE 1
1233 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
1234 extern __typeof(newlocale) __newlocale;
1235 extern __typeof(duplocale) __duplocale;
1236 extern __typeof(strcoll_l) __strcoll_l;
1240 const char __one[] = "Äuglein Augmen";
1241 const char __two[] = "Äuglein";
1246 loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1247 loc_dup = __duplocale(loc);
1248 i = __strcoll_l(__one, __two, loc);
1249 j = __strcoll_l(__one, __two, loc_dup);
1253 [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1254 [enable_clocale_flag=generic])
1257 # ... at some point put __strxfrm_l tests in as well.
1260 enable_clocale_flag=generic
1265 dnl Deal with gettext issues.
1267 [ --enable-nls use Native Language Support (default)],
1271 dnl Set configure bits for specified locale package
1272 case x${enable_clocale_flag} in
1274 AC_MSG_RESULT(generic)
1276 CLOCALE_H=config/locale/generic/c_locale.h
1277 CLOCALE_CC=config/locale/generic/c_locale.cc
1278 CCODECVT_H=config/locale/generic/codecvt_specializations.h
1279 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1280 CCOLLATE_CC=config/locale/generic/collate_members.cc
1281 CCTYPE_CC=config/locale/generic/ctype_members.cc
1282 CMESSAGES_H=config/locale/generic/messages_members.h
1283 CMESSAGES_CC=config/locale/generic/messages_members.cc
1284 CMONEY_CC=config/locale/generic/monetary_members.cc
1285 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1286 CTIME_CC=config/locale/generic/time_members.cc
1287 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1292 # Declare intention to use gettext, and add support for specific
1294 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1297 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1298 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1299 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1302 # Export the build objects.
1303 for ling in $ALL_LINGUAS; do \
1304 glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1305 glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1307 AC_SUBST(glibcpp_MOFILES)
1308 AC_SUBST(glibcpp_POFILES)
1310 CLOCALE_H=config/locale/gnu/c_locale.h
1311 CLOCALE_CC=config/locale/gnu/c_locale.cc
1312 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1313 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
1314 CCOLLATE_CC=config/locale/gnu/collate_members.cc
1315 CCTYPE_CC=config/locale/gnu/ctype_members.cc
1316 CMESSAGES_H=config/locale/gnu/messages_members.h
1317 CMESSAGES_CC=config/locale/gnu/messages_members.cc
1318 CMONEY_CC=config/locale/gnu/monetary_members.cc
1319 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1320 CTIME_CC=config/locale/gnu/time_members.cc
1321 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
1324 AC_MSG_RESULT(generic)
1326 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1327 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1328 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1329 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1330 CCOLLATE_CC=config/locale/generic/collate_members.cc
1331 CCTYPE_CC=config/locale/generic/ctype_members.cc
1332 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1333 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1334 CMONEY_CC=config/locale/generic/monetary_members.cc
1335 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1336 CTIME_CC=config/locale/generic/time_members.cc
1337 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1340 echo "$enable_clocale is an unknown locale package" 1>&2
1345 # This is where the testsuite looks for locale catalogs, using the
1346 # -DLOCALEDIR define during testsuite compilation.
1347 glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1348 AC_SUBST(glibcpp_localedir)
1352 AC_SUBST(CCODECVT_H)
1353 AC_SUBST(CMESSAGES_H)
1354 AC_SUBST(CCODECVT_CC)
1355 AC_SUBST(CCOLLATE_CC)
1357 AC_SUBST(CMESSAGES_CC)
1359 AC_SUBST(CNUMERIC_CC)
1361 AC_SUBST(CLOCALE_CC)
1362 AC_SUBST(CLOCALE_INTERNAL_H)
1367 dnl Check for which I/O library to use: libio, or something specific.
1369 dnl GLIBCPP_ENABLE_CSTDIO
1370 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1372 dnl default is stdio
1374 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1375 AC_MSG_CHECKING([for cstdio to use])
1376 AC_ARG_ENABLE(cstdio,
1377 [ --enable-cstdio enable stdio for target io package.
1378 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1380 if test x$enable_cstdio = xno; then
1383 enable_cstdio=stdio)
1385 enable_cstdio_flag=$enable_cstdio
1387 dnl Check if a valid I/O package
1388 case x${enable_cstdio_flag} in
1390 CSTDIO_H=config/io/c_io_libio.h
1391 BASIC_FILE_H=config/io/basic_file_libio.h
1392 BASIC_FILE_CC=config/io/basic_file_libio.cc
1393 AC_MSG_RESULT(libio)
1395 # see if we are on a system with libio native (ie, linux)
1396 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1398 # Need to check and see what version of glibc is being used. If
1399 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1400 # compile most of libio for linux systems.
1401 if test x$has_libio = x"yes"; then
1404 AC_MSG_CHECKING([for glibc version >= 2.2])
1405 AC_EGREP_CPP([ok], [
1406 #include <features.h>
1407 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1410 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1411 AC_MSG_RESULT($glibc_satisfactory)
1415 # XXX at the moment, admit defeat and force the recompilation
1416 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1417 glibc_satisfactory=no
1419 if test x$glibc_satisfactory = x"yes"; then
1424 # bkoz XXX need to add checks to enable this
1425 # pme XXX here's a first pass at such a check
1426 if test x$enable_c_mbchar != xno; then
1434 # Using libio, but <libio.h> doesn't exist on the target system. . .
1436 # bkoz XXX need to add checks to enable this
1437 # pme XXX here's a first pass at such a check
1438 if test x$enable_c_mbchar != xno; then
1445 xstdio | x | xno | xnone | xyes)
1447 CSTDIO_H=config/io/c_io_stdio.h
1448 BASIC_FILE_H=config/io/basic_file_stdio.h
1449 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1450 AC_MSG_RESULT(stdio)
1452 # We're not using stdio.
1457 echo "$enable_cstdio is an unknown io package" 1>&2
1462 AC_SUBST(BASIC_FILE_H)
1463 AC_SUBST(BASIC_FILE_CC)
1465 # 2000-08-04 bkoz hack
1466 CCODECVT_C=config/io/c_io_libio_codecvt.c
1467 AC_SUBST(CCODECVT_C)
1468 # 2000-08-04 bkoz hack
1470 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1471 test "$need_libio" = yes || test "$need_wlibio" = yes)
1472 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1473 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1474 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1475 libio_la=../libio/libio.la
1484 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1485 dnl We must stage the required headers so that they will be installed
1486 dnl with the library (unlike libgcc, the STL implementation is provided
1487 dnl solely within headers). Since we must not inject random user-space
1488 dnl macro names into user-provided C++ code, we first stage into <file>-in
1489 dnl and process to <file> with an output command. The reason for a two-
1490 dnl stage process here is to correctly handle $srcdir!=$objdir without
1491 dnl having to write complex code (the sed commands to clean the macro
1492 dnl namespace are complex and fragile enough as it is). We must also
1493 dnl add a relative path so that -I- is supported properly.
1495 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1496 AC_MSG_CHECKING([for thread model used by GCC])
1497 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1498 AC_MSG_RESULT([$target_thread_file])
1500 if test $target_thread_file != single; then
1501 AC_DEFINE(HAVE_GTHR_DEFAULT)
1502 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1505 glibcpp_thread_h=gthr-$target_thread_file.h
1506 AC_SUBST(glibcpp_thread_h)
1511 dnl Check for exception handling support. If an explicit enable/disable
1512 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1513 dnl target may or may not support call frame exceptions.
1515 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1516 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1517 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1519 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1521 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1522 AC_MSG_CHECKING([for exception model to use])
1525 AC_ARG_ENABLE(sjlj-exceptions,
1526 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1528 [dnl Botheration. Now we've got to detect the exception model.
1529 dnl Link tests against libgcc.a are problematic since -- at least
1530 dnl as of this writing -- we've not been given proper -L bits for
1531 dnl single-tree newlib and libgloss.
1533 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1534 dnl conftest files before we got a change to grep them first.
1535 cat > conftest.$ac_ext << EOF
1536 [#]line __oline__ "configure"
1545 old_CXXFLAGS="$CXXFLAGS"
1547 if AC_TRY_EVAL(ac_compile); then
1548 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1549 enable_sjlj_exceptions=yes
1550 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1551 enable_sjlj_exceptions=no
1554 CXXFLAGS="$old_CXXFLAGS"
1556 if test x$enable_sjlj_exceptions = xyes; then
1557 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1558 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1559 ac_exception_model_name=sjlj
1560 elif test x$enable_sjlj_exceptions = xno; then
1561 ac_exception_model_name="call frame"
1563 AC_MSG_ERROR([unable to detect exception model])
1566 AC_MSG_RESULT($ac_exception_model_name)
1571 dnl Check for libunwind exception handling support. If enabled then
1572 dnl we assume that the _Unwind_* functions that make up the Unwind ABI
1573 dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by
1574 dnl libunwind instead of libgcc and that libstdc++ has a dependency
1575 dnl on libunwind as well as libgcc.
1577 dnl GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
1578 dnl --enable-libunwind-exceptions forces the use of libunwind.
1579 dnl --disable-libunwind-exceptions assumes there is no libunwind.
1581 dnl Define _GLIBCPP_LIBUNWIND_EXCEPTIONS if requested.
1583 AC_DEFUN(GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS, [
1584 AC_MSG_CHECKING([for use of libunwind])
1585 AC_ARG_ENABLE(libunwind-exceptions,
1586 [ --enable-libunwind-exceptions force use of libunwind for exceptions],
1587 use_libunwind_exceptions=$enableval,
1588 use_libunwind_exceptions=no)
1589 AC_MSG_RESULT($use_libunwind_exceptions)
1590 dnl Option parsed, now set things appropriately
1591 if test x"$use_libunwind_exceptions" = xyes; then
1592 LIBUNWIND_FLAG="-lunwind"
1596 AC_SUBST(LIBUNWIND_FLAG)
1600 dnl Check for ISO/IEC 9899:1999 "C99" support.
1602 dnl GLIBCPP_ENABLE_C99
1603 dnl --enable-c99 defines _GLIBCPP_USE_C99
1604 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1605 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1606 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1607 dnl defaults to `no'.
1608 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1610 dnl GLIBCPP_ENABLE_C99
1611 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1612 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1615 changequote(<<, >>)dnl
1616 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1617 changequote([, ])dnl
1618 [case "$enableval" in
1619 yes) enable_c99=yes ;;
1620 no) enable_c99=no ;;
1621 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1623 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1628 # Check for the existence of <math.h> functions used if C99 is enabled.
1630 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1631 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1632 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1633 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1634 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1635 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1636 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1637 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1638 AC_TRY_COMPILE([#include <math.h>],
1639 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1640 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1641 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1642 AC_TRY_COMPILE([#include <math.h>],
1643 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1644 AC_TRY_COMPILE([#include <math.h>],
1645 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1646 AC_MSG_RESULT($ac_c99_math)
1648 # Check for the existence in <stdio.h> of vscanf, et. al.
1650 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1651 AC_TRY_COMPILE([#include <stdio.h>],
1652 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1653 AC_TRY_COMPILE([#include <stdio.h>
1655 void foo(char* fmt, ...)
1656 {va_list args; va_start(args, fmt);
1657 vfscanf(stderr, "%i", args);}],
1658 [],, [ac_c99_stdio=no])
1659 AC_TRY_COMPILE([#include <stdio.h>
1661 void foo(char* fmt, ...)
1662 {va_list args; va_start(args, fmt);
1663 vscanf("%i", args);}],
1664 [],, [ac_c99_stdio=no])
1665 AC_TRY_COMPILE([#include <stdio.h>
1667 void foo(char* fmt, ...)
1668 {va_list args; va_start(args, fmt);
1669 vsnprintf(fmt, 0, "%i", args);}],
1670 [],, [ac_c99_stdio=no])
1671 AC_TRY_COMPILE([#include <stdio.h>
1673 void foo(char* fmt, ...)
1674 {va_list args; va_start(args, fmt);
1675 vsscanf(fmt, "%i", args);}],
1676 [],, [ac_c99_stdio=no])
1677 AC_MSG_RESULT($ac_c99_stdio)
1679 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1681 AC_MSG_CHECKING([for lldiv_t declaration])
1682 AC_CACHE_VAL(ac_c99_lldiv_t, [
1683 AC_TRY_COMPILE([#include <stdlib.h>],
1685 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1687 AC_MSG_RESULT($ac_c99_lldiv_t)
1689 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1690 AC_TRY_COMPILE([#include <stdlib.h>],
1691 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1692 AC_TRY_COMPILE([#include <stdlib.h>],
1693 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1694 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1695 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1696 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1697 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1698 if test x"$ac_c99_lldiv_t" = x"no"; then
1701 AC_MSG_RESULT($ac_c99_stdlib)
1703 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1704 # XXX the wchar.h checks should be rolled into the general C99 bits.
1706 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1707 AC_TRY_COMPILE([#include <wchar.h>],
1708 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1709 AC_TRY_COMPILE([#include <wchar.h>],
1710 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1711 AC_TRY_COMPILE([#include <wchar.h>],
1712 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1713 AC_MSG_RESULT($ac_c99_wchar)
1715 AC_MSG_CHECKING([for enabled ISO C99 support])
1716 if test x"$ac_c99_math" = x"no" ||
1717 test x"$ac_c99_stdio" = x"no" ||
1718 test x"$ac_c99_stdlib" = x"no" ||
1719 test x"$ac_c99_wchar" = x"no"; then
1722 AC_MSG_RESULT($enable_c99)
1724 # Option parsed, now set things appropriately
1725 if test x"$enable_c99" = x"yes"; then
1726 AC_DEFINE(_GLIBCPP_USE_C99)
1734 dnl Check for template specializations for the 'long long' type extension.
1735 dnl The result determines only whether 'long long' I/O is enabled; things
1736 dnl like numeric_limits<> specializations are always available.
1738 dnl GLIBCPP_ENABLE_LONG_LONG
1739 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1740 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1741 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1742 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1743 dnl defaults to `no'.
1744 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1746 dnl GLIBCPP_ENABLE_LONG_LONG
1747 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1748 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1750 AC_ARG_ENABLE(long-long,
1751 changequote(<<, >>)dnl
1752 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1753 changequote([, ])dnl
1754 [case "$enableval" in
1755 yes) enable_long_long=yes ;;
1756 no) enable_long_long=no ;;
1757 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1759 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1764 AC_MSG_CHECKING([for enabled long long I/O support])
1765 # iostreams require strtoll, strtoull to compile
1766 AC_TRY_COMPILE([#include <stdlib.h>],
1767 [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1768 AC_TRY_COMPILE([#include <stdlib.h>],
1769 [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1771 # Option parsed, now set things appropriately
1772 if test x"$enable_long_long" = xyes; then
1773 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1775 AC_MSG_RESULT($enable_long_long)
1782 dnl Check for what type of C headers to use.
1784 dnl GLIBCPP_ENABLE_CHEADERS
1785 dnl --enable-cheaders= [does stuff].
1786 dnl --disable-cheaders [does not do anything, really].
1787 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1788 dnl Where DEFAULT is either `c' or `c_std'.
1789 dnl If ommitted, it defaults to `c_std'.
1790 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1791 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1792 AC_MSG_CHECKING([for c header strategy to use])
1793 AC_ARG_ENABLE(cheaders,
1794 changequote(<<, >>)dnl
1795 << --enable-cheaders=MODEL construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1797 [case "$enableval" in
1802 enable_cheaders=c_std
1804 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1807 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1808 AC_MSG_RESULT($enable_cheaders)
1810 dnl Option parsed, now set things appropriately
1811 case "$enable_cheaders" in
1813 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1816 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1820 AC_SUBST(C_INCLUDE_DIR)
1821 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C, test "$enable_cheaders" = c)
1822 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C_STD, test "$enable_cheaders" = c_std)
1823 AM_CONDITIONAL(GLIBCPP_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes)
1828 dnl Check for wide character support. Has the same effect as the option
1829 dnl in gcc's configure, but in a form that autoconf can mess with.
1831 dnl GLIBCPP_ENABLE_C_MBCHAR
1832 dnl --enable-c-mbchar requests all the wchar_t stuff.
1833 dnl --disable-c-mbchar doesn't.
1834 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1835 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1836 dnl defaults to `no'.
1837 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1838 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1839 AC_ARG_ENABLE(c-mbchar,
1840 changequote(<<, >>)dnl
1841 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1842 changequote([, ])dnl
1843 [case "$enableval" in
1844 yes) enable_c_mbchar=yes ;;
1845 no) enable_c_mbchar=no ;;
1846 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1848 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1849 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1854 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1856 dnl TOPLEVEL_INCLUDES
1857 dnl LIBMATH_INCLUDES
1858 dnl LIBSUPCXX_INCLUDES
1861 dnl GLIBCPP_EXPORT_INCLUDES
1862 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1863 # Root level of the build directory include sources.
1864 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1866 # Passed down for canadian crosses.
1867 if test x"$CANADIAN" = xyes; then
1868 TOPLEVEL_INCLUDES='-I$(includedir)'
1871 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1873 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1875 if test x"$need_libio" = xyes; then
1876 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1877 AC_SUBST(LIBIO_INCLUDES)
1880 # Now, export this to all the little Makefiles....
1881 AC_SUBST(GLIBCPP_INCLUDES)
1882 AC_SUBST(TOPLEVEL_INCLUDES)
1883 AC_SUBST(LIBMATH_INCLUDES)
1884 AC_SUBST(LIBSUPCXX_INCLUDES)
1889 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1891 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1892 # Optimization flags that are probably a good idea for thrill-seekers. Just
1893 # uncomment the lines below and make, everything else is ready to go...
1894 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1896 AC_SUBST(OPTIMIZE_CXXFLAGS)
1898 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1899 AC_SUBST(WARN_FLAGS)
1903 dnl GLIBCPP_EXPORT_INSTALL_INFO
1904 dnl calculates gxx_install_dir
1905 dnl exports glibcpp_toolexecdir
1906 dnl exports glibcpp_toolexeclibdir
1907 dnl exports glibcpp_prefixdir
1909 dnl Assumes cross_compiling bits already done, and with_cross_host in
1912 dnl GLIBCPP_EXPORT_INSTALL_INFO
1913 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1914 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1915 # exported correctly in GLIBCPP_CONFIGURE.
1916 glibcpp_toolexecdir=no
1917 glibcpp_toolexeclibdir=no
1918 glibcpp_prefixdir=${prefix}
1920 # Process the option --with-gxx-include-dir=<path to include-files directory>
1921 AC_MSG_CHECKING([for --with-gxx-include-dir])
1922 AC_ARG_WITH(gxx-include-dir,
1923 [ --with-gxx-include-dir the installation directory for include files],
1924 [case "${withval}" in
1926 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1933 gxx_include_dir=${withval}
1935 esac], [gxx_include_dir=no])
1936 AC_MSG_RESULT($gxx_include_dir)
1938 # Process the option "--enable-version-specific-runtime-libs"
1939 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1940 AC_ARG_ENABLE(version-specific-runtime-libs,
1941 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1942 [case "$enableval" in
1943 yes) version_specific_libs=yes ;;
1944 no) version_specific_libs=no ;;
1945 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
1947 version_specific_libs=no)dnl
1948 # Option set, now we can test it.
1949 AC_MSG_RESULT($version_specific_libs)
1951 # Default case for install directory for include files.
1952 if test $version_specific_libs = no && test $gxx_include_dir = no; then
1953 gxx_include_dir='$(prefix)'/include/c++/${gcc_version}
1956 # Version-specific runtime libs processing.
1957 if test $version_specific_libs = yes; then
1958 # Need the gcc compiler version to know where to install libraries
1959 # and header files if --enable-version-specific-runtime-libs option
1961 if test x"$gxx_include_dir" = x"no"; then
1962 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++
1964 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1965 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1968 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1969 # Install a library built with a cross compiler in tooldir, not libdir.
1970 if test x"$glibcpp_toolexecdir" = x"no"; then
1971 if test -n "$with_cross_host" &&
1972 test x"$with_cross_host" != x"no"; then
1973 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1974 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1976 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1977 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1981 AC_MSG_CHECKING([for install location])
1982 AC_MSG_RESULT($gxx_include_dir)
1984 AC_SUBST(glibcpp_prefixdir)
1985 AC_SUBST(gxx_include_dir)
1986 AC_SUBST(glibcpp_toolexecdir)
1987 AC_SUBST(glibcpp_toolexeclibdir)
1991 # Check for functions in math library.
1992 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1994 # This file can be copied and used freely without restrictions. It can
1995 # be used in projects which are not available under the GNU Public License
1996 # but which still want to provide support for the GNU gettext functionality.
1997 # Please note that the actual code is *not* freely available.
2001 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
2002 AC_DEFUN(AC_REPLACE_MATHFUNCS,
2003 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
2006 dnl This macro searches for a GNU version of make. If a match is found, the
2007 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
2008 dnl set to "#". This is useful for including a special features in a Makefile,
2009 dnl which cannot be handled by other versions of make. The variable
2010 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
2011 dnl the empty string otherwise.
2013 dnl Here is an example of its use:
2015 dnl Makefile.in might contain:
2017 dnl # A failsafe way of putting a dependency rule into a makefile
2019 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
2021 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
2022 dnl @ifGNUmake@ include $(DEPEND)
2023 dnl @ifGNUmake@ endif
2025 dnl Then configure.in would normally contain:
2027 dnl CHECK_GNU_MAKE()
2028 dnl AC_OUTPUT(Makefile)
2030 dnl Then perhaps to cause gnu make to override any other make, we could do
2031 dnl something like this (note that GNU make always looks for GNUmakefile first):
2033 dnl if ! test x$_cv_gnu_make_command = x ; then
2034 dnl mv Makefile GNUmakefile
2035 dnl echo .DEFAULT: > Makefile ;
2036 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
2039 dnl Then, if any (well almost any) other make is called, and GNU make also
2040 dnl exists, then the other make wraps the GNU make.
2042 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
2043 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
2045 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
2046 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
2047 dnl #### conditional's subshell (" --version" is not a command), using a
2048 dnl #### different option to grep(1).
2050 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
2051 dnl #### ${MAKE:-make}).
2054 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
2055 _cv_gnu_make_command='' ;
2056 dnl Search all the common names for GNU make
2057 for a in "${MAKE-make}" make gmake gnumake ; do
2058 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
2060 _cv_gnu_make_command=$a ;
2065 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
2066 dnl string, '#' otherwise
2067 if test "x$_cv_gnu_make_command" != "x" ; then
2076 dnl Check for headers for, and arguments to, the setrlimit() function.
2077 dnl Used only in testsuite_hooks.h.
2078 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
2079 AC_TRY_COMPILE([#include <unistd.h>
2080 #include <sys/time.h>
2081 #include <sys/resource.h>
2082 ], [ int f = RLIMIT_$1 ; ],
2083 [glibcpp_mresult=1], [glibcpp_mresult=0])
2084 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
2085 [Only used in build directory testsuite_hooks.h.])
2087 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
2088 setrlimit_have_headers=yes
2089 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
2091 setrlimit_have_headers=no)
2092 # If don't have the headers, then we can't run the tests now, and we
2093 # won't be seeing any of these during testsuite compilation.
2094 if test $setrlimit_have_headers = yes; then
2095 # Can't do these in a loop, else the resulting syntax is wrong.
2096 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
2097 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
2098 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
2099 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
2101 # Check for rlimit, setrlimit.
2102 AC_CACHE_VAL(ac_setrlimit, [
2103 AC_TRY_COMPILE([#include <unistd.h>
2104 #include <sys/time.h>
2105 #include <sys/resource.h>
2107 [ struct rlimit r; setrlimit(0, &r);],
2108 [ac_setrlimit=yes], [ac_setrlimit=no])
2112 AC_MSG_CHECKING([for testsuite memory limit support])
2113 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
2115 AC_DEFINE(_GLIBCPP_MEM_LIMITS)
2119 AC_MSG_RESULT($ac_mem_limits)
2124 dnl Does any necessary configuration of the testsuite directory. Generates
2125 dnl the testsuite_hooks.h header.
2127 dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
2128 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
2129 GLIBCPP_CHECK_SETRLIMIT
2131 # Look for setenv, so that extended locale tests can be performed.
2132 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
2134 # Export file names for ABI checking.
2135 baseline_file="${glibcpp_srcdir}/config/abi/${abi_baseline_triplet}/baseline_symbols.txt"
2136 AC_SUBST(baseline_file)
2138 # Don't do ABI checking unless native.
2139 AM_CONDITIONAL(GLIBCPP_BUILD_ABI_CHECK,
2140 test x"$build" = x"$host" && test -z "$with_cross_host")
2144 sinclude(../libtool.m4)
2145 dnl The lines below arrange for aclocal not to bring an installed
2146 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
2147 dnl add a definition of LIBTOOL to Makefile.in.
2148 ifelse(,,,[AC_SUBST(LIBTOOL)
2149 AC_DEFUN([AM_PROG_LIBTOOL])
2150 AC_DEFUN([AC_LIBTOOL_DLOPEN])
2151 AC_DEFUN([AC_PROG_LD])
2155 # Check whether LC_MESSAGES is available in <locale.h>.
2156 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2158 # This file file be copied and used freely without restrictions. It can
2159 # be used in projects which are not available under the GNU Public License
2160 # but which still want to provide support for the GNU gettext functionality.
2161 # Please note that the actual code is *not* freely available.
2165 AC_DEFUN(AC_LC_MESSAGES, [
2166 AC_CHECK_HEADER(locale.h, [
2167 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
2168 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2169 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
2170 if test $ac_cv_val_LC_MESSAGES = yes; then
2171 AC_DEFINE(HAVE_LC_MESSAGES)
2178 dnl Check for whether the Boost-derived checks should be turned on.
2180 dnl GLIBCPP_ENABLE_CONCEPT_CHECKS
2181 dnl --enable-concept-checks turns them on.
2182 dnl --disable-concept-checks leaves them off.
2183 dnl + Usage: GLIBCPP_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2184 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2185 dnl defaults to `no'.
2186 AC_DEFUN(GLIBCPP_ENABLE_CONCEPT_CHECKS, [dnl
2187 define([GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
2188 AC_ARG_ENABLE(concept-checks,
2189 changequote(<<, >>)dnl
2190 << --enable-concept-checks use Boost-derived template checks [default=>>GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT],
2191 changequote([, ])dnl
2192 [case "$enableval" in
2193 yes) enable_concept_checks=yes ;;
2194 no) enable_concept_checks=no ;;
2195 *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
2197 enable_concept_checks=GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
2198 dnl Option parsed, now set things appropriately
2199 if test x"$enable_concept_checks" = xyes; then
2200 AC_DEFINE(_GLIBCPP_CONCEPT_CHECKS)
2206 dnl Add version tags to symbols in shared library (or not), additionally
2207 dnl marking other symbols as private/local (or not).
2209 dnl GLIBCPP_ENABLE_SYMVERS
2210 dnl --enable-symvers=style adds a version script to the linker call when
2211 dnl creating the shared library. The choice of version script is
2212 dnl controlled by 'style'.
2213 dnl --disable-symvers does not.
2214 dnl + Usage: GLIBCPP_ENABLE_SYMVERS[(DEFAULT)]
2215 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2216 dnl defaults to `no'. Passing `yes' tries to choose a default style
2217 dnl based on linker characteristics. Passing 'no' disables versioning.
2218 AC_DEFUN(GLIBCPP_ENABLE_SYMVERS, [dnl
2219 define([GLIBCPP_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl
2220 AC_ARG_ENABLE(symvers,
2221 changequote(<<, >>)dnl
2222 << --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCPP_ENABLE_SYMVERS_DEFAULT],
2223 changequote([, ])dnl
2224 [case "$enableval" in
2225 yes) enable_symvers=yes ;;
2226 no) enable_symvers=no ;;
2227 # other names here, just as sanity checks
2228 #gnu|sun|etcetera) enable_symvers=$enableval ;;
2229 gnu) enable_symvers=$enableval ;;
2230 *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;;
2232 enable_symvers=GLIBCPP_ENABLE_SYMVERS_DEFAULT)dnl
2234 # If we never went through the GLIBCPP_CHECK_LINKER_FEATURES macro, then we
2235 # don't know enough about $LD to do tricks...
2236 if test x$enable_shared = xno ||
2238 test x$glibcpp_gnu_ld_version = x; then
2242 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
2243 if test $enable_symvers != no; then
2244 AC_MSG_CHECKING([for shared libgcc])
2245 ac_save_CFLAGS="$CFLAGS"
2247 AC_TRY_LINK(, [return 0], glibcpp_shared_libgcc=yes, glibcpp_shared_libgcc=no)
2248 CFLAGS="$ac_save_CFLAGS"
2249 AC_MSG_RESULT($glibcpp_shared_libgcc)
2252 # For GNU ld, we need at least this version. It's 2.12 in the same format
2253 # as the tested-for version. See GLIBCPP_CHECK_LINKER_FEATURES for more.
2254 glibcpp_min_gnu_ld_version=21200
2256 # Check to see if unspecified "yes" value can win, given results
2258 if test $enable_symvers = yes ; then
2259 if test $with_gnu_ld = yes &&
2260 test $glibcpp_shared_libgcc = yes ;
2262 if test $glibcpp_gnu_ld_version -ge $glibcpp_min_gnu_ld_version ; then
2265 ac_test_CFLAGS="${CFLAGS+set}"
2266 ac_save_CFLAGS="$CFLAGS"
2267 CFLAGS='-shared -Wl,--version-script,conftest.map'
2270 echo 'FOO { global: f[a-z]o; local: *; };' > conftest.map
2272 AC_TRY_LINK([int foo;],, enable_symvers=gnu)
2273 if test "$ac_test_CFLAGS" = set; then
2274 CFLAGS="$ac_save_CFLAGS"
2276 # this is the suspicious part
2287 dnl Everything parsed; figure out what file to use.
2288 case $enable_symvers in
2290 SYMVER_MAP=config/linker-map.dummy
2293 SYMVER_MAP=config/linker-map.gnu
2294 AC_DEFINE(_GLIBCPP_SYMVER)
2298 AC_SUBST(SYMVER_MAP)
2299 AM_CONDITIONAL(GLIBCPP_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
2300 AC_MSG_CHECKING([versioning on shared library symbols])
2301 AC_MSG_RESULT($enable_symvers)
2305 # isc-posix.m4 serial 1 (gettext-0.10.40)
2306 dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
2307 dnl This file is free software, distributed under the terms of the GNU
2308 dnl General Public License. As a special exception to the GNU General
2309 dnl Public License, this file may be distributed as part of a program
2310 dnl that contains a configuration script generated by Autoconf, under
2311 dnl the same distribution terms as the rest of that program.
2313 # This test replaces the one in autoconf.
2314 # Currently this macro should have the same name as the autoconf macro
2315 # because gettext's gettext.m4 (distributed in the automake package)
2316 # still uses it. Otherwise, the use in gettext.m4 makes autoheader
2317 # give these diagnostics:
2318 # configure.in:556: AC_TRY_COMPILE was called before AC_ISC_POSIX
2319 # configure.in:556: AC_TRY_RUN was called before AC_ISC_POSIX
2321 undefine([AC_ISC_POSIX])
2323 AC_DEFUN([AC_ISC_POSIX],
2325 dnl This test replaces the obsolescent AC_ISC_POSIX kludge.
2326 AC_CHECK_LIB(cposix, strerror, [LIBS="$LIBS -lcposix"])
2330 # Add --enable-maintainer-mode option to configure.
2335 AC_DEFUN([AM_MAINTAINER_MODE],
2336 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2337 dnl maintainer-mode is disabled by default
2338 AC_ARG_ENABLE(maintainer-mode,
2339 [ --enable-maintainer-mode enable make rules and dependencies not useful
2340 (and sometimes confusing) to the casual installer],
2341 USE_MAINTAINER_MODE=$enableval,
2342 USE_MAINTAINER_MODE=no)
2343 AC_MSG_RESULT($USE_MAINTAINER_MODE)
2344 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
2345 MAINT=$MAINTAINER_MODE_TRUE
2350 # Define a conditional.
2352 AC_DEFUN([AM_CONDITIONAL],
2363 # Do all the work for Automake. This macro actually does too much --
2364 # some checks are only needed if your package does certain things.
2365 # But this isn't really a big deal.
2370 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
2372 AC_DEFUN([AM_INIT_AUTOMAKE],
2373 [AC_REQUIRE([AC_PROG_INSTALL])
2378 dnl test to see if srcdir already configured
2379 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
2380 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
2383 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
2384 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
2385 AC_REQUIRE([AM_SANITY_CHECK])
2386 AC_REQUIRE([AC_ARG_PROGRAM])
2387 dnl FIXME This is truly gross.
2388 missing_dir=`cd $ac_aux_dir && pwd`
2389 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
2390 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
2391 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
2392 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
2393 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
2394 AC_REQUIRE([AC_PROG_MAKE_SET])])
2397 # Check to make sure that the build environment is sane.
2400 AC_DEFUN([AM_SANITY_CHECK],
2401 [AC_MSG_CHECKING([whether build environment is sane])
2404 echo timestamp > conftestfile
2405 # Do `set' in a subshell so we don't clobber the current shell's
2406 # arguments. Must try -L first in case configure is actually a
2407 # symlink; some systems play weird games with the mod time of symlinks
2408 # (eg FreeBSD returns the mod time of the symlink's containing
2411 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
2412 if test "[$]*" = "X"; then
2414 set X `ls -t $srcdir/configure conftestfile`
2416 if test "[$]*" != "X $srcdir/configure conftestfile" \
2417 && test "[$]*" != "X conftestfile $srcdir/configure"; then
2419 # If neither matched, then we have a broken ls. This can happen
2420 # if, for instance, CONFIG_SHELL is bash and it inherits a
2421 # broken ls alias from the environment. This has actually
2422 # happened. Such a system could not be considered "sane".
2423 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
2424 alias in your environment])
2427 test "[$]2" = conftestfile
2433 AC_MSG_ERROR([newly created file is older than distributed files!
2434 Check your system clock])
2437 AC_MSG_RESULT(yes)])
2439 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
2440 dnl The program must properly implement --version.
2441 AC_DEFUN([AM_MISSING_PROG],
2442 [AC_MSG_CHECKING(for working $2)
2443 # Run test in a subshell; some versions of sh will print an error if
2444 # an executable is not found, even if stderr is redirected.
2445 # Redirect stdin to placate older versions of autoconf. Sigh.
2446 if ($2 --version) < /dev/null > /dev/null 2>&1; then
2448 AC_MSG_RESULT(found)
2451 AC_MSG_RESULT(missing)
2455 # Like AC_CONFIG_HEADER, but automatically create stamp file.
2457 AC_DEFUN([AM_CONFIG_HEADER],
2459 AC_CONFIG_HEADER([$1])
2460 dnl When config.status generates a header, we must update the stamp-h file.
2461 dnl This file resides in the same directory as the config header
2462 dnl that is generated. We must strip everything past the first ":",
2463 dnl and everything past the last "/".
2464 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
2465 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
2466 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
2468 for am_file in <<$1>>; do
2469 case " <<$>>CONFIG_HEADERS " in
2470 *" <<$>>am_file "*<<)>>
2471 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
2474 am_indx=`expr "<<$>>am_indx" + 1`