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 configure bits.
17 AC_DEFUN(GLIBCPP_CONFIGURE, [
18 dnl Default to --enable-multilib
19 AC_ARG_ENABLE(multilib,
20 [ --enable-multilib build hella library versions (default)],
21 [case "${enableval}" in
24 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
25 esac], [multilib=yes])dnl
27 # When building with srcdir == objdir, links to the source files will
28 # be created in directories within the target_subdir. We have to
29 # adjust toplevel_srcdir accordingly, so that configure finds
30 # install-sh and other auxiliary files that live in the top-level
32 if test "${srcdir}" = "."; then
33 if test -z "${with_target_subdir}"; then
36 if test "${with_target_subdir}" != "."; then
37 toprel="${with_multisrctop}../.."
39 toprel="${with_multisrctop}.."
45 AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
46 toplevel_srcdir=\${top_srcdir}/$toprel
47 AC_SUBST(toplevel_srcdir)
49 # Export build and source directories.
50 # These need to be absolute paths, yet at the same time need to
51 # canonicalize only relative paths, because then amd will not unmount
52 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
53 glibcpp_builddir=`${PWDCMD-pwd}`
55 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
56 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
58 AC_SUBST(glibcpp_builddir)
59 AC_SUBST(glibcpp_srcdir)
61 dnl This is here just to satisfy automake.
62 ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
65 # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also
66 # be 'cp -p' if linking isn't available.
67 #ac_cv_prog_LN_S='cp -p'
70 # We use these options to decide which functions to include.
71 AC_ARG_WITH(target-subdir,
72 [ --with-target-subdir=SUBDIR
73 configuring in a subdirectory])
74 AC_ARG_WITH(cross-host,
75 [ --with-cross-host=HOST configuring with a cross compiler])
77 glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
78 AC_SUBST(glibcpp_basedir)
80 # Never versions of autoconf add an underscore to these functions.
81 # Prevent future problems ...
82 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
83 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
84 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
85 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
88 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
89 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
90 # are probably using a cross compiler, which will not be able to fully
91 # link an executable. This is addressed in later versions of autoconf.
93 AC_DEFUN(LIB_AC_PROG_CC,
94 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
95 dnl Fool anybody using AC_PROG_CC.
96 AC_PROVIDE([AC_PROG_CC])
97 AC_CHECK_PROG(CC, gcc, gcc)
98 if test -z "$CC"; then
99 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
100 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
105 if test $ac_cv_prog_gcc = yes; then
107 dnl Check whether -g works, even if CFLAGS is set, in case the package
108 dnl plays around with CFLAGS (such as to build both debugging and
109 dnl normal versions of a library), tasteless as that idea is.
110 ac_test_CFLAGS="${CFLAGS+set}"
111 ac_save_CFLAGS="$CFLAGS"
114 if test "$ac_test_CFLAGS" = set; then
115 CFLAGS="$ac_save_CFLAGS"
116 elif test $ac_cv_prog_cc_g = yes; then
123 test "${CFLAGS+set}" = set || CFLAGS="-g"
129 # Likewise for AC_PROG_CXX. We can't just call it directly because g++
130 # will try to link in libstdc++.
131 AC_DEFUN(LIB_AC_PROG_CXX,
132 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
133 dnl Fool anybody using AC_PROG_CXX.
134 AC_PROVIDE([AC_PROG_CXX])
135 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
136 # flags that come in CXX while configuring libstdc++. They're different
137 # from those used for all other target libraries. If CXX is set in
138 # the environment, respect that here.
140 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
141 AC_SUBST(glibcpp_CXX)
143 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
147 if test $ac_cv_prog_gxx = yes; then
149 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
150 dnl plays around with CXXFLAGS (such as to build both debugging and
151 dnl normal versions of a library), tasteless as that idea is.
152 ac_test_CXXFLAGS="${CXXFLAGS+set}"
153 ac_save_CXXFLAGS="$CXXFLAGS"
156 if test "$ac_test_CXXFLAGS" = set; then
157 CXXFLAGS="$ac_save_CXXFLAGS"
158 elif test $ac_cv_prog_cxx_g = yes; then
165 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
171 # For some reason, gettext needs this.
174 AC_CHECK_TOOL(AS, as)
175 AC_CHECK_TOOL(AR, ar)
176 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
181 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
182 # at least currently, we never actually build a program, so we never
183 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
184 # fails, because we are probably configuring with a cross compiler
185 # which can't create executables. So we include AC_EXEEXT to keep
186 # automake happy, but we don't execute it, since we don't care about
189 # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
190 # to nothing, so nothing would remain between `then' and `fi' if it
191 # were not for the `:' below.
196 . [$]{glibcpp_basedir}/configure.host
198 case [$]{glibcpp_basedir} in
199 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
200 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
203 # This does for the target what configure.host does for the host. In
204 # addition to possibly modifying the same flags, it also sets up symlinks.
211 dnl Check to see if g++ can compile this library, and if so, if any version-
212 dnl specific precautions need to be taken.
214 dnl GLIBCPP_CHECK_COMPILER_VERSION
215 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
216 if test ! -f stamp-sanity-compiler; then
217 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
224 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
226 AC_MSG_RESULT($gpp_satisfactory)
227 touch stamp-sanity-compiler
233 dnl Tests for newer compiler features, or features that are present in newer
234 dnl compiler versions but not older compiler versions still in use, should
237 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
238 dnl new inlining code or the new system_header pragma will die on -Werror.
239 dnl Leave it out by default and use maint-mode to use it.
241 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
242 dnl compiler supports it and the user has not requested debug mode.
244 dnl GLIBCPP_CHECK_COMPILER_FEATURES
245 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
246 # All these tests are for C++; save the language and the compiler flags.
247 # The CXXFLAGS thing is suspicious, but based on similar bits previously
248 # found in GLIBCPP_CONFIGURE.
251 ac_test_CXXFLAGS="${CXXFLAGS+set}"
252 ac_save_CXXFLAGS="$CXXFLAGS"
254 # Check for maintainer-mode bits.
255 if test x"$USE_MAINTAINER_MODE" = xno; then
261 # Check for -ffunction-sections -fdata-sections
262 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
263 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
264 AC_TRY_COMPILE(, [int foo;
265 ], [ac_fdsections=yes], [ac_fdsections=no])
266 if test "$ac_test_CXXFLAGS" = set; then
267 CXXFLAGS="$ac_save_CXXFLAGS"
269 # this is the suspicious part
272 if test x"$ac_fdsections" = x"yes" &&
273 test x"$enable_debug" = x"no"; then
274 SECTION_FLAGS='-ffunction-sections -fdata-sections'
276 AC_MSG_RESULT($ac_fdsections)
280 AC_SUBST(SECTION_FLAGS)
285 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
286 dnl the native linker is in use, all variables will be defined to something
287 dnl safe (like an empty string).
289 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
290 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
291 dnl Define LD, with_gnu_ld, and (possibly) glibcpp_gnu_ld_version as
292 dnl side-effects of testing.
294 dnl GLIBCPP_CHECK_LINKER_FEATURES
295 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
296 # If we're not using GNU ld, then there's no point in even trying these
297 # tests. Check for that first. We should have already tested for gld
298 # by now (in libtool), but require it now just to be safe...
299 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
300 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
301 AC_REQUIRE([AC_PROG_LD])
303 # The name set by libtool depends on the version of libtool. Shame on us
304 # for depending on an impl detail, but c'est la vie. Older versions used
305 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
306 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
307 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
308 # set (hence we're using an older libtool), then set it.
309 if test x${with_gnu_ld+set} != xset; then
310 if test x${ac_cv_prog_gnu_ld+set} != xset; then
311 # We got through "ac_require(ac_prog_ld)" and still not set? Huh?
314 with_gnu_ld=$ac_cv_prog_gnu_ld
318 # Start by getting the version number. I think the libtool test already
319 # does some of this, but throws away the result.
321 ldver=`$LD --version 2>/dev/null | head -1 | \
322 sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
324 glibcpp_gnu_ld_version=`echo $ldver | \
325 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
328 if test "$with_gnu_ld" = "notbroken"; then
329 # GNU ld it is! Joy and bunny rabbits!
331 # All these tests are for C++; save the language and the compiler flags.
332 # Need to do this so that g++ won't try to link in libstdc++
333 ac_test_CFLAGS="${CFLAGS+set}"
334 ac_save_CFLAGS="$CFLAGS"
335 CFLAGS='-x c++ -Wl,--gc-sections'
337 # Check for -Wl,--gc-sections
338 # XXX This test is broken at the moment, as symbols required for
339 # linking are now in libsupc++ (not built yet.....). In addition,
340 # this test has cored on solaris in the past. In addition,
341 # --gc-sections doesn't really work at the moment (keeps on discarding
342 # used sections, first .eh_frame and now some of the glibc sections for
343 # iconv). Bzzzzt. Thanks for playing, maybe next time.
344 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
352 ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
353 if test "$ac_test_CFLAGS" = set; then
354 CFLAGS="$ac_save_CFLAGS"
356 # this is the suspicious part
359 if test "$ac_sectionLDflags" = "yes"; then
360 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
362 AC_MSG_RESULT($ac_sectionLDflags)
365 # Set linker optimization flags.
366 if test x"$with_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then
367 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
370 AC_SUBST(SECTION_LDFLAGS)
371 AC_SUBST(OPT_LDFLAGS)
376 dnl Check to see if the (math function) argument passed is
377 dnl declared when using the c++ compiler
378 dnl ASSUMES argument is a math function with ONE parameter
380 dnl GLIBCPP_CHECK_MATH_DECL_1
381 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
382 AC_MSG_CHECKING([for $1 declaration])
383 if test x${glibcpp_cv_func_$1_use+set} != xset; then
384 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
387 AC_TRY_COMPILE([#include <math.h>
393 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
397 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
401 dnl Check to see if the (math function) argument passed is
402 dnl 1) declared when using the c++ compiler
403 dnl 2) has "C" linkage
404 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
406 dnl Define HAVE_CARGF etc if "cargf" is declared and links
408 dnl argument 1 is name of function to check
410 dnl ASSUMES argument is a math function with ONE parameter
412 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
413 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
414 GLIBCPP_CHECK_MATH_DECL_1($1)
415 if test x$glibcpp_cv_func_$1_use = x"yes"; then
418 GLIBCPP_CHECK_MATH_DECL_1(_$1)
419 if test x$glibcpp_cv_func__$1_use = x"yes"; then
427 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
428 dnl of functions at once. It's an all-or-nothing check -- either
429 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
430 dnl Doing it this way saves significant configure time.
431 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
432 AC_MSG_CHECKING([for $1 functions])
433 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
436 AC_TRY_COMPILE([#include <math.h>],
437 [ `for x in $3; do echo "$x (0);"; done` ],
438 [glibcpp_cv_func_$2_use=yes],
439 [glibcpp_cv_func_$2_use=no])
441 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
442 if test x$glibcpp_cv_func_$2_use = x"yes"; then
448 dnl Check to see if the (math function) argument passed is
449 dnl declared when using the c++ compiler
450 dnl ASSUMES argument is a math function with TWO parameters
452 dnl GLIBCPP_CHECK_MATH_DECL_2
453 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
454 AC_MSG_CHECKING([for $1 declaration])
455 if test x${glibcpp_cv_func_$1_use+set} != xset; then
456 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
459 AC_TRY_COMPILE([#include <math.h>],
461 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
465 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
469 dnl Check to see if the (math function) argument passed is
470 dnl 1) declared when using the c++ compiler
471 dnl 2) has "C" linkage
473 dnl Define HAVE_CARGF etc if "cargf" is declared and links
475 dnl argument 1 is name of function to check
477 dnl ASSUMES argument is a math function with TWO parameters
479 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
480 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
481 GLIBCPP_CHECK_MATH_DECL_2($1)
482 if test x$glibcpp_cv_func_$1_use = x"yes"; then
485 GLIBCPP_CHECK_MATH_DECL_2(_$1)
486 if test x$glibcpp_cv_func__$1_use = x"yes"; then
494 dnl Check to see if the (math function) argument passed is
495 dnl declared when using the c++ compiler
496 dnl ASSUMES argument is a math function with THREE parameters
498 dnl GLIBCPP_CHECK_MATH_DECL_3
499 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
500 AC_MSG_CHECKING([for $1 declaration])
501 if test x${glibcpp_cv_func_$1_use+set} != xset; then
502 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
505 AC_TRY_COMPILE([#include <math.h>],
507 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
511 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
515 dnl Check to see if the (math function) argument passed is
516 dnl 1) declared when using the c++ compiler
517 dnl 2) has "C" linkage
519 dnl Define HAVE_CARGF etc if "cargf" is declared and links
521 dnl argument 1 is name of function to check
523 dnl ASSUMES argument is a math function with THREE parameters
525 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
526 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
527 GLIBCPP_CHECK_MATH_DECL_3($1)
528 if test x$glibcpp_cv_func_$1_use = x"yes"; then
531 GLIBCPP_CHECK_MATH_DECL_3(_$1)
532 if test x$glibcpp_cv_func__$1_use = x"yes"; then
540 dnl Check to see if the (stdlib function) argument passed is
541 dnl 1) declared when using the c++ compiler
542 dnl 2) has "C" linkage
544 dnl argument 1 is name of function to check
546 dnl ASSUMES argument is a math function with TWO parameters
548 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
549 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
550 AC_MSG_CHECKING([for $1 declaration])
551 if test x${glibcpp_cv_func_$1_use+set} != xset; then
552 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
555 AC_TRY_COMPILE([#include <stdlib.h>],
557 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
561 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
562 if test x$glibcpp_cv_func_$1_use = x"yes"; then
569 dnl Check to see if the (stdlib function) argument passed is
570 dnl 1) declared when using the c++ compiler
571 dnl 2) has "C" linkage
573 dnl argument 1 is name of function to check
575 dnl ASSUMES argument is a function with THREE parameters
577 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3
578 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3, [
579 AC_MSG_CHECKING([for $1 declaration])
580 if test x${glibcpp_cv_func_$1_use+set} != xset; then
581 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
584 AC_TRY_COMPILE([#include <stdlib.h>],
586 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
590 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
591 if test x$glibcpp_cv_func_$1_use = x"yes"; then
598 dnl Because the builtins are picky picky picky about the arguments they take,
599 dnl do an explict linkage tests here.
600 dnl Check to see if the (math function) argument passed is
601 dnl 1) declared when using the c++ compiler
602 dnl 2) has "C" linkage
604 dnl Define HAVE_CARGF etc if "cargf" is declared and links
606 dnl argument 1 is name of function to check
608 dnl ASSUMES argument is a math function with ONE parameter
610 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
611 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
612 AC_MSG_CHECKING([for $1 declaration])
613 if test x${glibcpp_cv_func_$1_use+set} != xset; then
614 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
617 AC_TRY_COMPILE([#include <math.h>],
619 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
623 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
624 if test x$glibcpp_cv_func_$1_use = x"yes"; then
625 AC_MSG_CHECKING([for $1 linkage])
626 if test x${glibcpp_cv_func_$1_link+set} != xset; then
627 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
628 AC_TRY_LINK([#include <math.h>],
630 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
633 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
634 if test x$glibcpp_cv_func_$1_link = x"yes"; then
635 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
636 AC_DEFINE_UNQUOTED(${ac_tr_func})
643 dnl Check to see what builtin math functions are supported
645 dnl check for __builtin_abs
646 dnl check for __builtin_fabsf
647 dnl check for __builtin_fabs
648 dnl check for __builtin_fabl
649 dnl check for __builtin_labs
650 dnl check for __builtin_sqrtf
651 dnl check for __builtin_sqrtl
652 dnl check for __builtin_sqrt
653 dnl check for __builtin_sinf
654 dnl check for __builtin_sin
655 dnl check for __builtin_sinl
656 dnl check for __builtin_cosf
657 dnl check for __builtin_cos
658 dnl check for __builtin_cosl
660 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
661 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
662 dnl Test for builtin math functions.
663 dnl These are made in gcc/c-common.c
664 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
665 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
666 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
667 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
668 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
670 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
671 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
672 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
674 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
675 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
676 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
678 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
679 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
680 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
682 dnl There is, without a doubt, a more elegant way to have these
683 dnl names exported so that they won't be stripped out of acconfig.h by
684 dnl autoheader. I leave this as an exercise to somebody less frustrated
685 dnl than I.... please email the libstdc++ list if you can figure out a
686 dnl more elegant approach (see autoconf/acgen.m4 and specifically
687 dnl AC_CHECK_FUNC for things to steal.)
689 if test x$dummyvar = x"yes"; then
690 AC_DEFINE(HAVE___BUILTIN_ABS)
691 AC_DEFINE(HAVE___BUILTIN_LABS)
692 AC_DEFINE(HAVE___BUILTIN_COS)
693 AC_DEFINE(HAVE___BUILTIN_COSF)
694 AC_DEFINE(HAVE___BUILTIN_COSL)
695 AC_DEFINE(HAVE___BUILTIN_FABS)
696 AC_DEFINE(HAVE___BUILTIN_FABSF)
697 AC_DEFINE(HAVE___BUILTIN_FABSL)
698 AC_DEFINE(HAVE___BUILTIN_SIN)
699 AC_DEFINE(HAVE___BUILTIN_SINF)
700 AC_DEFINE(HAVE___BUILTIN_SINL)
701 AC_DEFINE(HAVE___BUILTIN_SQRT)
702 AC_DEFINE(HAVE___BUILTIN_SQRTF)
703 AC_DEFINE(HAVE___BUILTIN_SQRTL)
709 dnl Check to see what the underlying c library
710 dnl These checks need to do two things:
711 dnl 1) make sure the name is declared when using the c++ compiler
712 dnl 2) make sure the name has "C" linkage
713 dnl This might seem like overkill but experience has shown that it's not...
715 dnl Define HAVE_STRTOLD if "strtold" is declared and links
716 dnl Define HAVE_STRTOF if "strtof" is declared and links
717 dnl Define HAVE_DRAND48 if "drand48" is declared and links
719 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
720 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
721 ac_test_CXXFLAGS="${CXXFLAGS+set}"
722 ac_save_CXXFLAGS="$CXXFLAGS"
723 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
725 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
726 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
727 AC_CHECK_FUNCS(drand48)
729 CXXFLAGS="$ac_save_CXXFLAGS"
734 dnl Check to see what the underlying c library or math library is like.
735 dnl These checks need to do two things:
736 dnl 1) make sure the name is declared when using the c++ compiler
737 dnl 2) make sure the name has "C" linkage
738 dnl This might seem like overkill but experience has shown that it's not...
740 dnl Define HAVE_CARGF etc if "cargf" is found.
742 dnl GLIBCPP_CHECK_MATH_SUPPORT
743 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
744 ac_test_CXXFLAGS="${CXXFLAGS+set}"
745 ac_save_CXXFLAGS="$CXXFLAGS"
746 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
749 AC_CHECK_LIB(m, sin, libm="-lm")
753 dnl Check to see if certain C math functions exist.
754 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
755 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
756 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
757 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
758 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
759 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
760 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
761 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
763 dnl Check to see if basic C math functions have float versions.
764 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
769 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
772 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
773 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
774 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
775 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
776 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
777 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
778 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
779 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
780 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
781 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
782 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
783 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
784 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
785 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
786 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
787 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
789 dnl Check to see if basic C math functions have long double versions.
790 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
795 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
798 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
799 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
800 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
801 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
802 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
803 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
804 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
805 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
806 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
807 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
808 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
809 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
810 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
811 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
812 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
813 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
814 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
816 dnl Some runtimes have these functions with a preceding underscore. Please
817 dnl keep this sync'd with the one above. And if you add any new symbol,
818 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
819 dnl Check to see if certain C math functions exist.
821 dnl Check to see if basic C math functions have float versions.
822 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
824 _acosf _asinf _atanf \
826 _coshf _sinhf _tanhf)
827 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
831 dnl Check to see if basic C math functions have long double versions.
832 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
834 _acosl _asinl _atanl \
836 _coshl _sinhl _tanhl)
837 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
842 CXXFLAGS="$ac_save_CXXFLAGS"
847 dnl Check to see if there is native support for complex
849 dnl Don't compile bits in math/* if native support exits.
851 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
853 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
854 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
855 dnl Check for complex versions of math functions of platform.
856 AC_CHECK_LIB(m, main)
857 AC_REPLACE_MATHFUNCS(nan copysignf)
859 dnl For __signbit to signbit conversions.
860 AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
861 AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
863 dnl Compile the long double complex functions only if the function
864 dnl provides the non-complex long double functions that are needed.
865 dnl Currently this includes copysignl, which should be
866 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
867 if test x$ac_cv_func_copysignl = x"yes"; then
868 AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
871 AC_SUBST(LIBMATHOBJS)
875 dnl Check to see what architecture and operating system we are compiling
876 dnl for. Also, if architecture- or OS-specific flags are required for
877 dnl compilation, pick them up here.
879 dnl GLIBCPP_CHECK_TARGET
880 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
881 . [$]{glibcpp_basedir}/configure.target
882 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
883 AC_MSG_RESULT(OS config directory is $os_include_dir)
888 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
889 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
890 dnl must have been previously checked.)
892 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
893 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
895 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
896 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
898 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
899 dnl others even if wchar_t support is not on.
900 AC_MSG_CHECKING([for mbstate_t])
901 AC_TRY_COMPILE([#include <wchar.h>],
902 [mbstate_t teststate;],
903 have_mbstate_t=yes, have_mbstate_t=no)
904 AC_MSG_RESULT($have_mbstate_t)
905 if test x"$have_mbstate_t" = xyes; then
906 AC_DEFINE(HAVE_MBSTATE_T)
909 dnl Sanity check for existence of ISO C99 headers for extended encoding.
910 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
911 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
913 dnl Only continue checking if the ISO C99 headers exist and support is on.
914 if test x"$ac_has_wchar_h" = xyes &&
915 test x"$ac_has_wctype_h" = xyes &&
916 test x"$enable_c_mbchar" != xno; then
918 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
919 dnl numeric_limits can instantiate type_traits<wchar_t>
920 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
921 AC_TRY_COMPILE([#include <wchar.h>],
922 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
923 has_wchar_minmax=yes, has_wchar_minmax=no)
924 AC_MSG_RESULT($has_wchar_minmax)
926 dnl Test wchar.h for WEOF, which is what we use to determine whether
927 dnl to specialize for char_traits<wchar_t> or not.
928 AC_MSG_CHECKING([for WEOF])
931 #include <stddef.h>],
933 has_weof=yes, has_weof=no)
934 AC_MSG_RESULT($has_weof)
936 dnl Tests for wide character functions used in char_traits<wchar_t>.
938 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
941 dnl Checks for names injected into std:: by the c_std headers.
942 AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
943 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
944 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
945 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
946 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
947 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
950 AC_MSG_CHECKING([for ISO C99 wchar_t support])
951 if test x"$has_weof" = xyes &&
952 test x"$has_wchar_minmax" = xyes &&
953 test x"$ac_wfuncs" = xyes; then
954 ac_isoC99_wchar_t=yes
958 AC_MSG_RESULT($ac_isoC99_wchar_t)
960 dnl Use iconv for wchar_t to char conversions. As such, check for
961 dnl X/Open Portability Guide, version 2 features (XPG2).
962 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
963 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
965 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
966 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
968 LIBS="$LIBS $libiconv"
970 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
971 ac_XPG2funcs=yes, ac_XPG2funcs=no)
975 AC_MSG_CHECKING([for XPG2 wchar_t support])
976 if test x"$ac_has_iconv_h" = xyes &&
977 test x"$ac_has_langinfo_h" = xyes &&
978 test x"$ac_XPG2funcs" = xyes; then
983 AC_MSG_RESULT($ac_XPG2_wchar_t)
985 dnl At the moment, only enable wchar_t specializations if all the
986 dnl above support is present.
987 AC_MSG_CHECKING([for enabled wchar_t specializations])
988 if test x"$ac_isoC99_wchar_t" = xyes &&
989 test x"$ac_XPG2_wchar_t" = xyes; then
990 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
996 dnl Wide characters disabled by the user.
997 AC_MSG_WARN([wchar_t support disabled.])
1003 dnl Check for special debugging mode; not for production use.
1005 dnl GLIBCPP_ENABLE_DEBUG
1006 dnl --enable-debug sets '-ggdb3 -O0'.
1007 dnl --disable-debug sets '-g' and whatever optimization options the
1008 dnl compiler can handle.
1009 dnl + --enable-maintainer-mode automatically defaults this to on.
1010 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1011 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1012 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1013 dnl defaults to `no'.
1014 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1015 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1016 AC_ARG_ENABLE(debug,
1017 changequote(<<, >>)dnl
1018 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1019 changequote([, ])dnl
1020 [case "${enableval}" in
1021 yes) enable_debug=yes ;;
1022 no) enable_debug=no ;;
1023 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1025 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1027 dnl Option parsed, now set things appropriately
1028 case "${enable_debug}" in
1030 DEBUG_FLAGS='-O0 -ggdb3'
1036 AC_SUBST(DEBUG_FLAGS)
1041 dnl Check for "unusual" flags to pass to the compiler while building.
1043 dnl GLIBCPP_ENABLE_CXX_FLAGS
1044 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1045 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1046 dnl Somehow this same set of flags must be passed when [re]building
1048 dnl --disable-cxx-flags passes nothing.
1049 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1050 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1051 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1052 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1053 dnl If "default flags" is an empty string (or "none"), the effect is
1054 dnl the same as --disable or --enable=no.
1055 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1056 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1057 AC_ARG_ENABLE(cxx-flags,
1058 changequote(<<, >>)dnl
1059 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1060 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1061 changequote([, ])dnl
1062 [case "x$enableval" in
1064 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1066 enable_cxx_flags='' ;;
1068 enable_cxx_flags="$enableval" ;;
1070 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1072 dnl Thinko on my part during design. This kludge is the workaround.
1073 if test "$enable_cxx_flags" = "none"; then
1074 enable_cxx_flags='';
1077 dnl Run through flags (either default or command-line) and set anything
1078 dnl extra (e.g., #defines) that must accompany particular g++ options.
1079 if test -n "$enable_cxx_flags"; then
1080 for f in $enable_cxx_flags; do
1084 *) # and we're trying to pass /what/ exactly?
1085 AC_MSG_ERROR([compiler flags start with a -]) ;;
1089 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1090 AC_SUBST(EXTRA_CXX_FLAGS)
1095 dnl Check for which locale library to use: gnu or generic.
1097 dnl GLIBCPP_ENABLE_CLOCALE
1098 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1099 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1101 dnl default is generic
1103 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1104 AC_MSG_CHECKING([for clocale to use])
1105 AC_ARG_ENABLE(clocale,
1106 [ --enable-clocale enable model for target locale package.
1107 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1109 if test x$enable_clocale = xno; then
1114 enable_clocale_flag=$enable_clocale
1116 dnl Probe for locale support if no specific model is specified.
1117 dnl Default to "generic"
1118 if test x$enable_clocale_flag = xno; then
1119 case x${target_os} in
1121 AC_EGREP_CPP([_GLIBCPP_ok], [
1122 #include <features.h>
1123 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1126 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1128 # Test for bugs early in glibc-2.2.x series
1129 if test x$enable_clocale_flag = xgnu; then
1131 #define _GNU_SOURCE 1
1135 const char __one[] = "Äuglein Augmen";
1136 const char __two[] = "Äuglein";
1141 loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1142 loc_dup = __duplocale(loc);
1143 i = __strcoll_l(__one, __two, loc);
1144 j = __strcoll_l(__one, __two, loc_dup);
1148 [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1149 [enable_clocale_flag=generic])
1152 # ... at some point put __strxfrm_l tests in as well.
1155 enable_clocale_flag=generic
1160 dnl Deal with gettext issues.
1162 [ --enable-nls use Native Language Support (default)],
1166 dnl Set configure bits for specified locale package
1167 case x${enable_clocale_flag} in
1169 AC_MSG_RESULT(generic)
1171 CLOCALE_H=config/locale/generic/c_locale.h
1172 CLOCALE_CC=config/locale/generic/c_locale.cc
1173 CCODECVT_H=config/locale/generic/codecvt_specializations.h
1174 CCOLLATE_CC=config/locale/generic/collate_members.cc
1175 CCTYPE_CC=config/locale/generic/ctype_members.cc
1176 CMESSAGES_H=config/locale/generic/messages_members.h
1177 CMESSAGES_CC=config/locale/generic/messages_members.cc
1178 CMONEY_CC=config/locale/generic/monetary_members.cc
1179 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1180 CTIME_CC=config/locale/generic/time_members.cc
1185 # Declare intention to use gettext, and add support for specific
1187 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1190 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1191 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1192 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1195 # Export the build objects.
1196 for ling in $ALL_LINGUAS; do \
1197 glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1198 glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1200 AC_SUBST(glibcpp_MOFILES)
1201 AC_SUBST(glibcpp_POFILES)
1203 CLOCALE_H=config/locale/gnu/c_locale.h
1204 CLOCALE_CC=config/locale/gnu/c_locale.cc
1205 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1206 CCOLLATE_CC=config/locale/gnu/collate_members.cc
1207 CCTYPE_CC=config/locale/gnu/ctype_members.cc
1208 CMESSAGES_H=config/locale/gnu/messages_members.h
1209 CMESSAGES_CC=config/locale/gnu/messages_members.cc
1210 CMONEY_CC=config/locale/gnu/monetary_members.cc
1211 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1212 CTIME_CC=config/locale/gnu/time_members.cc
1215 AC_MSG_RESULT(generic)
1217 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1218 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1219 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1220 CCOLLATE_CC=config/locale/generic/collate_members.cc
1221 CCTYPE_CC=config/locale/generic/ctype_members.cc
1222 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1223 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1224 CMONEY_CC=config/locale/generic/monetary_members.cc
1225 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1226 CTIME_CC=config/locale/generic/time_members.cc
1229 echo "$enable_clocale is an unknown locale package" 1>&2
1234 # This is where the testsuite looks for locale catalogs, using the
1235 # -DLOCALEDIR define during testsuite compilation.
1236 glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1237 AC_SUBST(glibcpp_localedir)
1241 AC_SUBST(CCODECVT_H)
1242 AC_SUBST(CMESSAGES_H)
1243 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1244 AC_LINK_FILES($CCOLLATE_CC, src/collate.cc)
1245 AC_LINK_FILES($CCTYPE_CC, src/ctype.cc)
1246 AC_LINK_FILES($CMESSAGES_CC, src/messages.cc)
1247 AC_LINK_FILES($CMONEY_CC, src/monetary.cc)
1248 AC_LINK_FILES($CNUMERIC_CC, src/numeric.cc)
1249 AC_LINK_FILES($CTIME_CC, src/time.cc)
1254 dnl Check for which I/O library to use: libio, or something specific.
1256 dnl GLIBCPP_ENABLE_CSTDIO
1257 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1259 dnl default is stdio
1261 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1262 AC_MSG_CHECKING([for cstdio to use])
1263 AC_ARG_ENABLE(cstdio,
1264 [ --enable-cstdio enable stdio for target io package.
1265 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1267 if test x$enable_cstdio = xno; then
1270 enable_cstdio=stdio)
1272 enable_cstdio_flag=$enable_cstdio
1274 dnl Check if a valid I/O package
1275 case x${enable_cstdio_flag} in
1277 CSTDIO_H=config/io/c_io_libio.h
1278 BASIC_FILE_H=config/io/basic_file_libio.h
1279 BASIC_FILE_CC=config/io/basic_file_libio.cc
1280 AC_MSG_RESULT(libio)
1282 # see if we are on a system with libio native (ie, linux)
1283 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1285 # Need to check and see what version of glibc is being used. If
1286 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1287 # compile most of libio for linux systems.
1288 if test x$has_libio = x"yes"; then
1291 AC_MSG_CHECKING([for glibc version >= 2.2])
1292 AC_EGREP_CPP([ok], [
1293 #include <features.h>
1294 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1297 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1298 AC_MSG_RESULT($glibc_satisfactory)
1302 # XXX at the moment, admit defeat and force the recompilation
1303 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1304 glibc_satisfactory=no
1306 if test x$glibc_satisfactory = x"yes"; then
1311 # bkoz XXX need to add checks to enable this
1312 # pme XXX here's a first pass at such a check
1313 if test x$enable_c_mbchar != xno; then
1321 # Using libio, but <libio.h> doesn't exist on the target system. . .
1323 # bkoz XXX need to add checks to enable this
1324 # pme XXX here's a first pass at such a check
1325 if test x$enable_c_mbchar != xno; then
1332 xstdio | x | xno | xnone | xyes)
1334 CSTDIO_H=config/io/c_io_stdio.h
1335 BASIC_FILE_H=config/io/basic_file_stdio.h
1336 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1337 AC_MSG_RESULT(stdio)
1339 # We're not using stdio.
1344 echo "$enable_cstdio is an unknown io package" 1>&2
1349 AC_SUBST(BASIC_FILE_H)
1350 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1352 # 2000-08-04 bkoz hack
1353 CCODECVT_C=config/io/c_io_libio_codecvt.c
1354 AC_SUBST(CCODECVT_C)
1355 # 2000-08-04 bkoz hack
1357 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1358 test "$need_libio" = yes || test "$need_wlibio" = yes)
1359 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1360 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1361 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1362 libio_la=../libio/libio.la
1371 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1372 dnl We must stage the required headers so that they will be installed
1373 dnl with the library (unlike libgcc, the STL implementation is provided
1374 dnl solely within headers). Since we must not inject random user-space
1375 dnl macro names into user-provided C++ code, we first stage into <file>-in
1376 dnl and process to <file> with an output command. The reason for a two-
1377 dnl stage process here is to correctly handle $srcdir!=$objdir without
1378 dnl having to write complex code (the sed commands to clean the macro
1379 dnl namespace are complex and fragile enough as it is). We must also
1380 dnl add a relative path so that -I- is supported properly.
1382 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1383 AC_MSG_CHECKING([for thread model used by GCC])
1384 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1385 AC_MSG_RESULT([$target_thread_file])
1387 if test $target_thread_file != single; then
1388 AC_DEFINE(HAVE_GTHR_DEFAULT)
1389 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1392 glibcpp_thread_h=gthr-$target_thread_file.h
1393 AC_SUBST(glibcpp_thread_h)
1398 dnl Check for exception handling support. If an explicit enable/disable
1399 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1400 dnl target may or may not support call frame exceptions.
1402 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1403 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1404 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1406 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1408 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1409 AC_MSG_CHECKING([for exception model to use])
1412 AC_ARG_ENABLE(sjlj-exceptions,
1413 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1415 [dnl Botheration. Now we've got to detect the exception model.
1416 dnl Link tests against libgcc.a are problematic since -- at least
1417 dnl as of this writing -- we've not been given proper -L bits for
1418 dnl single-tree newlib and libgloss.
1420 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1421 dnl conftest files before we got a change to grep them first.
1422 cat > conftest.$ac_ext << EOF
1423 [#]line __oline__ "configure"
1432 old_CXXFLAGS="$CXXFLAGS"
1434 if AC_TRY_EVAL(ac_compile); then
1435 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1436 enable_sjlj_exceptions=yes
1437 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1438 enable_sjlj_exceptions=no
1441 CXXFLAGS="$old_CXXFLAGS"
1443 if test x$enable_sjlj_exceptions = xyes; then
1444 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1445 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1446 ac_exception_model_name=sjlj
1447 elif test x$enable_sjlj_exceptions = xno; then
1448 ac_exception_model_name="call frame"
1450 AC_MSG_ERROR([unable to detect exception model])
1453 AC_MSG_RESULT($ac_exception_model_name)
1458 dnl Check for libunwind exception handling support. If enabled then
1459 dnl we assume that the _Unwind_* functions that make up the Unwind ABI
1460 dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by
1461 dnl libunwind instead of libgcc and that libstdc++ has a dependency
1462 dnl on libunwind as well as libgcc.
1464 dnl GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
1465 dnl --enable-libunwind-exceptions forces the use of libunwind.
1466 dnl --disable-libunwind-exceptions assumes there is no libunwind.
1468 dnl Define _GLIBCPP_LIBUNWIND_EXCEPTIONS if requested.
1470 AC_DEFUN(GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS, [
1471 AC_MSG_CHECKING([for use of libunwind])
1472 AC_ARG_ENABLE(libunwind-exceptions,
1473 [ --enable-libunwind-exceptions force use of libunwind for exceptions],
1474 use_libunwind_exceptions=$enableval,
1475 use_libunwind_exceptions=no)
1476 AC_MSG_RESULT($use_libunwind_exceptions)
1477 dnl Option parsed, now set things appropriately
1478 if test x"$use_libunwind_exceptions" = xyes; then
1479 LIBUNWIND_FLAG="-lunwind"
1483 AC_SUBST(LIBUNWIND_FLAG)
1487 dnl Check for ISO/IEC 9899:1999 "C99" support.
1489 dnl GLIBCPP_ENABLE_C99
1490 dnl --enable-c99 defines _GLIBCPP_USE_C99
1491 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1492 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1493 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1494 dnl defaults to `no'.
1495 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1497 dnl GLIBCPP_ENABLE_C99
1498 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1499 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1502 changequote(<<, >>)dnl
1503 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1504 changequote([, ])dnl
1505 [case "$enableval" in
1506 yes) enable_c99=yes ;;
1507 no) enable_c99=no ;;
1508 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1510 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1515 # Check for the existence of <math.h> functions used if C99 is enabled.
1517 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1518 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1519 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1520 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1521 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1522 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1523 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1524 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1525 AC_TRY_COMPILE([#include <math.h>],
1526 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1527 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1528 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1529 AC_TRY_COMPILE([#include <math.h>],
1530 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1531 AC_TRY_COMPILE([#include <math.h>],
1532 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1533 AC_MSG_RESULT($ac_c99_math)
1535 # Check for the existence in <stdio.h> of vscanf, et. al.
1537 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1538 AC_TRY_COMPILE([#include <stdio.h>],
1539 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1540 AC_TRY_COMPILE([#include <stdio.h>
1542 void foo(char* fmt, ...)
1543 {va_list args; va_start(args, fmt);
1544 vfscanf(stderr, "%i", args);}],
1545 [],, [ac_c99_stdio=no])
1546 AC_TRY_COMPILE([#include <stdio.h>
1548 void foo(char* fmt, ...)
1549 {va_list args; va_start(args, fmt);
1550 vscanf("%i", args);}],
1551 [],, [ac_c99_stdio=no])
1552 AC_TRY_COMPILE([#include <stdio.h>
1554 void foo(char* fmt, ...)
1555 {va_list args; va_start(args, fmt);
1556 vsnprintf(fmt, 0, "%i", args);}],
1557 [],, [ac_c99_stdio=no])
1558 AC_TRY_COMPILE([#include <stdio.h>
1560 void foo(char* fmt, ...)
1561 {va_list args; va_start(args, fmt);
1562 vsscanf(fmt, "%i", args);}],
1563 [],, [ac_c99_stdio=no])
1564 AC_MSG_RESULT($ac_c99_stdio)
1566 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1568 AC_MSG_CHECKING([for lldiv_t declaration])
1569 AC_CACHE_VAL(ac_c99_lldiv_t, [
1570 AC_TRY_COMPILE([#include <stdlib.h>],
1572 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1574 AC_MSG_RESULT($ac_c99_lldiv_t)
1576 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1577 AC_TRY_COMPILE([#include <stdlib.h>],
1578 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1579 AC_TRY_COMPILE([#include <stdlib.h>],
1580 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1581 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1582 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1583 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1584 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1585 if test x"$ac_c99_lldiv_t" = x"no"; then
1588 AC_MSG_RESULT($ac_c99_stdlib)
1590 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1591 # XXX the wchar.h checks should be rolled into the general C99 bits.
1593 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1594 AC_TRY_COMPILE([#include <wchar.h>],
1595 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1596 AC_TRY_COMPILE([#include <wchar.h>],
1597 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1598 AC_TRY_COMPILE([#include <wchar.h>],
1599 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1600 AC_MSG_RESULT($ac_c99_wchar)
1602 AC_MSG_CHECKING([for enabled ISO C99 support])
1603 if test x"$ac_c99_math" = x"no" ||
1604 test x"$ac_c99_stdio" = x"no" ||
1605 test x"$ac_c99_stdlib" = x"no" ||
1606 test x"$ac_c99_wchar" = x"no"; then
1609 AC_MSG_RESULT($enable_c99)
1611 # Option parsed, now set things appropriately
1612 if test x"$enable_c99" = x"yes"; then
1613 AC_DEFINE(_GLIBCPP_USE_C99)
1621 dnl Check for template specializations for the 'long long' type extension.
1622 dnl The result determines only whether 'long long' I/O is enabled; things
1623 dnl like numeric_limits<> specializations are always available.
1625 dnl GLIBCPP_ENABLE_LONG_LONG
1626 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1627 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1628 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1629 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1630 dnl defaults to `no'.
1631 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1633 dnl GLIBCPP_ENABLE_LONG_LONG
1634 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1635 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1637 AC_ARG_ENABLE(long-long,
1638 changequote(<<, >>)dnl
1639 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1640 changequote([, ])dnl
1641 [case "$enableval" in
1642 yes) enable_long_long=yes ;;
1643 no) enable_long_long=no ;;
1644 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1646 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1651 AC_MSG_CHECKING([for enabled long long I/O support])
1652 # iostreams require strtoll, strtoull to compile
1653 AC_TRY_COMPILE([#include <stdlib.h>],
1654 [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1655 AC_TRY_COMPILE([#include <stdlib.h>],
1656 [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1658 # Option parsed, now set things appropriately
1659 if test x"$enable_long_long" = xyes; then
1660 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1662 AC_MSG_RESULT($enable_long_long)
1669 dnl Check for what kind of C headers to use.
1671 dnl GLIBCPP_ENABLE_CHEADERS
1672 dnl --enable-cheaders= [does stuff].
1673 dnl --disable-cheaders [does not do anything, really].
1674 dnl + This will eventually need to be 'c_shadow' by default.
1675 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1676 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1677 dnl If ommitted, it defaults to `c_std'.
1678 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1679 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1680 AC_MSG_CHECKING([for c header strategy to use])
1681 AC_ARG_ENABLE(cheaders,
1682 changequote(<<, >>)dnl
1683 << --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1685 [case "$enableval" in
1690 enable_cheaders=c_std
1693 enable_cheaders=c_shadow
1695 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1698 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1699 AC_MSG_RESULT($enable_cheaders)
1701 dnl Option parsed, now set things appropriately
1702 case "$enable_cheaders" in
1704 CSHADOW_FLAGS="-fno-builtin"
1705 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
1709 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1713 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1717 AC_SUBST(CSHADOW_FLAGS)
1718 AC_SUBST(C_INCLUDE_DIR)
1719 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C, test "$enable_cheaders" = c)
1720 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C_STD, test "$enable_cheaders" = c_std)
1725 dnl Check for wide character support. Has the same effect as the option
1726 dnl in gcc's configure, but in a form that autoconf can mess with.
1728 dnl GLIBCPP_ENABLE_C_MBCHAR
1729 dnl --enable-c-mbchar requests all the wchar_t stuff.
1730 dnl --disable-c-mbchar doesn't.
1731 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1732 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1733 dnl defaults to `no'.
1734 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1735 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1736 AC_ARG_ENABLE(c-mbchar,
1737 changequote(<<, >>)dnl
1738 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1739 changequote([, ])dnl
1740 [case "$enableval" in
1741 yes) enable_c_mbchar=yes ;;
1742 no) enable_c_mbchar=no ;;
1743 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1745 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1746 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1751 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1753 dnl TOPLEVEL_INCLUDES
1754 dnl LIBMATH_INCLUDES
1755 dnl LIBSUPCXX_INCLUDES
1757 dnl CSHADOW_INCLUDES
1759 dnl GLIBCPP_EXPORT_INCLUDES
1760 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1761 # Root level of the build directory include sources.
1762 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1764 # Passed down for canadian crosses.
1765 if test x"$CANADIAN" = xyes; then
1766 TOPLEVEL_INCLUDES='-I$(includedir)'
1769 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1771 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1773 if test x"$need_libio" = xyes; then
1774 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1775 AC_SUBST(LIBIO_INCLUDES)
1778 # Now, export this to all the little Makefiles....
1779 AC_SUBST(GLIBCPP_INCLUDES)
1780 AC_SUBST(TOPLEVEL_INCLUDES)
1781 AC_SUBST(LIBMATH_INCLUDES)
1782 AC_SUBST(LIBSUPCXX_INCLUDES)
1787 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1789 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1790 # Optimization flags that are probably a good idea for thrill-seekers. Just
1791 # uncomment the lines below and make, everything else is ready to go...
1792 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1794 AC_SUBST(OPTIMIZE_CXXFLAGS)
1796 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1797 AC_SUBST(WARN_FLAGS)
1801 dnl GLIBCPP_EXPORT_INSTALL_INFO
1802 dnl calculates gxx_install_dir
1803 dnl exports glibcpp_toolexecdir
1804 dnl exports glibcpp_toolexeclibdir
1805 dnl exports glibcpp_prefixdir
1807 dnl Assumes cross_compiling bits already done, and with_cross_host in
1810 dnl GLIBCPP_EXPORT_INSTALL_INFO
1811 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1812 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1813 # exported correctly in GLIBCPP_CONFIGURE.
1814 glibcpp_toolexecdir=no
1815 glibcpp_toolexeclibdir=no
1816 glibcpp_prefixdir=${prefix}
1818 AC_MSG_CHECKING([for interface version number])
1819 libstdcxx_interface=$INTERFACE
1820 AC_MSG_RESULT($libstdcxx_interface)
1822 # Process the option --with-gxx-include-dir=<path to include-files directory>
1823 AC_MSG_CHECKING([for --with-gxx-include-dir])
1824 AC_ARG_WITH(gxx-include-dir,
1825 [ --with-gxx-include-dir the installation directory for include files],
1826 [case "${withval}" in
1828 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1835 gxx_include_dir=${withval}
1837 esac], [gxx_include_dir=no])
1838 AC_MSG_RESULT($gxx_include_dir)
1840 # Process the option "--enable-version-specific-runtime-libs"
1841 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1842 AC_ARG_ENABLE(version-specific-runtime-libs,
1843 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1844 [case "$enableval" in
1845 yes) version_specific_libs=yes ;;
1846 no) version_specific_libs=no ;;
1847 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
1849 version_specific_libs=no)dnl
1850 # Option set, now we can test it.
1851 AC_MSG_RESULT($version_specific_libs)
1853 if test $version_specific_libs = yes; then
1854 # Need the gcc compiler version to know where to install libraries
1855 # and header files if --enable-version-specific-runtime-libs option
1858 gcc_version_trigger=${srcdir}/../gcc/version.c
1859 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1860 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1861 if test x"$gxx_include_dir" = x"no"; then
1862 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/g++
1864 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1865 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1869 # Default case for install directory for include files.
1870 if test $version_specific_libs = no &&
1871 test $gxx_include_dir = no; then
1872 gxx_include_dir='$(prefix)'/include/g++-${libstdcxx_interface}
1875 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1876 # Install a library built with a cross compiler in tooldir, not libdir.
1877 if test x"$glibcpp_toolexecdir" = x"no"; then
1878 if test -n "$with_cross_host" &&
1879 test x"$with_cross_host" != x"no"; then
1880 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1881 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1883 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1884 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1888 AC_MSG_CHECKING([for install location])
1889 AC_MSG_RESULT($gxx_include_dir)
1891 AC_SUBST(glibcpp_prefixdir)
1892 AC_SUBST(gxx_include_dir)
1893 AC_SUBST(glibcpp_toolexecdir)
1894 AC_SUBST(glibcpp_toolexeclibdir)
1898 # Check for functions in math library.
1899 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1901 # This file can be copied and used freely without restrictions. It can
1902 # be used in projects which are not available under the GNU Public License
1903 # but which still want to provide support for the GNU gettext functionality.
1904 # Please note that the actual code is *not* freely available.
1908 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1909 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1910 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
1913 dnl This macro searches for a GNU version of make. If a match is found, the
1914 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1915 dnl set to "#". This is useful for including a special features in a Makefile,
1916 dnl which cannot be handled by other versions of make. The variable
1917 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1918 dnl the empty string otherwise.
1920 dnl Here is an example of its use:
1922 dnl Makefile.in might contain:
1924 dnl # A failsafe way of putting a dependency rule into a makefile
1926 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1928 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1929 dnl @ifGNUmake@ include $(DEPEND)
1930 dnl @ifGNUmake@ endif
1932 dnl Then configure.in would normally contain:
1934 dnl CHECK_GNU_MAKE()
1935 dnl AC_OUTPUT(Makefile)
1937 dnl Then perhaps to cause gnu make to override any other make, we could do
1938 dnl something like this (note that GNU make always looks for GNUmakefile first):
1940 dnl if ! test x$_cv_gnu_make_command = x ; then
1941 dnl mv Makefile GNUmakefile
1942 dnl echo .DEFAULT: > Makefile ;
1943 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1946 dnl Then, if any (well almost any) other make is called, and GNU make also
1947 dnl exists, then the other make wraps the GNU make.
1949 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1950 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1952 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1953 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1954 dnl #### conditional's subshell (" --version" is not a command), using a
1955 dnl #### different option to grep(1).
1957 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1958 dnl #### ${MAKE:-make}).
1961 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1962 _cv_gnu_make_command='' ;
1963 dnl Search all the common names for GNU make
1964 for a in "${MAKE-make}" make gmake gnumake ; do
1965 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1967 _cv_gnu_make_command=$a ;
1972 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1973 dnl string, '#' otherwise
1974 if test "x$_cv_gnu_make_command" != "x" ; then
1983 dnl Check for headers for, and arguments to, the setrlimit() function.
1984 dnl Used only in testsuite_hooks.h.
1985 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
1986 AC_TRY_COMPILE([#include <sys/resource.h>
1988 ], [ int f = RLIMIT_$1 ; ],
1989 [glibcpp_mresult=1], [glibcpp_mresult=0])
1990 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
1991 [Only used in build directory testsuite_hooks.h.])
1993 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
1994 setrlimit_have_headers=yes
1995 AC_CHECK_HEADERS(sys/resource.h unistd.h,
1997 setrlimit_have_headers=no)
1998 # If don't have the headers, then we can't run the tests now, and we
1999 # won't be seeing any of these during testsuite compilation.
2000 if test $setrlimit_have_headers = yes; then
2001 # Can't do these in a loop, else the resulting syntax is wrong.
2002 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
2003 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
2004 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
2005 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
2007 # Check for rlimit, setrlimit.
2008 AC_CACHE_VAL(ac_setrlimit, [
2009 AC_TRY_COMPILE([#include <sys/resource.h>
2012 [ struct rlimit r; setrlimit(0, &r);],
2013 [ac_setrlimit=yes], [ac_setrlimit=no])
2017 AC_MSG_CHECKING([for testsuite memory limit support])
2018 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
2020 AC_DEFINE(_GLIBCPP_MEM_LIMITS)
2024 AC_MSG_RESULT($ac_mem_limits)
2029 dnl Does any necessary configuration of the testsuite directory. Generates
2030 dnl the testsuite_hooks.h header.
2032 dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
2033 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
2034 GLIBCPP_CHECK_SETRLIMIT
2036 # Look for setenv, so that extended locale tests can be performed.
2037 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
2041 sinclude(../libtool.m4)
2042 dnl The lines below arrange for aclocal not to bring an installed
2043 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
2044 dnl add a definition of LIBTOOL to Makefile.in.
2045 ifelse(,,,[AC_SUBST(LIBTOOL)
2046 AC_DEFUN([AM_PROG_LIBTOOL])
2047 AC_DEFUN([AC_LIBTOOL_DLOPEN])
2048 AC_DEFUN([AC_PROG_LD])
2052 # Check whether LC_MESSAGES is available in <locale.h>.
2053 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2055 # This file file be copied and used freely without restrictions. It can
2056 # be used in projects which are not available under the GNU Public License
2057 # but which still want to provide support for the GNU gettext functionality.
2058 # Please note that the actual code is *not* freely available.
2062 AC_DEFUN(AC_LC_MESSAGES, [
2063 AC_CHECK_HEADER(locale.h, [
2064 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
2065 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2066 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
2067 if test $ac_cv_val_LC_MESSAGES = yes; then
2068 AC_DEFINE(HAVE_LC_MESSAGES)
2075 dnl Check for whether the Boost-derived checks should be turned on.
2077 dnl GLIBCPP_ENABLE_CONCEPT_CHECKS
2078 dnl --enable-concept-checks turns them on.
2079 dnl --disable-concept-checks leaves them off.
2080 dnl + Usage: GLIBCPP_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2081 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2082 dnl defaults to `no'.
2083 AC_DEFUN(GLIBCPP_ENABLE_CONCEPT_CHECKS, [dnl
2084 define([GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
2085 AC_ARG_ENABLE(concept-checks,
2086 changequote(<<, >>)dnl
2087 << --enable-concept-checks use Boost-derived template checks [default=>>GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT],
2088 changequote([, ])dnl
2089 [case "$enableval" in
2090 yes) enable_concept_checks=yes ;;
2091 no) enable_concept_checks=no ;;
2092 *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
2094 enable_concept_checks=GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
2095 dnl Option parsed, now set things appropriately
2096 if test x"$enable_concept_checks" = xyes; then
2097 AC_DEFINE(_GLIBCPP_CONCEPT_CHECKS)
2103 dnl Add version tags to symbols in shared library (or not), additionally
2104 dnl marking other symbols as private/local (or not).
2106 dnl GLIBCPP_ENABLE_SYMVERS
2107 dnl --enable-symvers=style adds a version script to the linker call when
2108 dnl creating the shared library. The choice of version script is
2109 dnl controlled by 'style'.
2110 dnl --disable-symvers does not.
2111 dnl + Usage: GLIBCPP_ENABLE_SYMVERS[(DEFAULT)]
2112 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2113 dnl defaults to `no'. Passing `yes' tries to choose a default style
2114 dnl based on linker characteristics. Passing 'no' disables versioning.
2115 AC_DEFUN(GLIBCPP_ENABLE_SYMVERS, [dnl
2116 define([GLIBCPP_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl
2117 AC_ARG_ENABLE(symvers,
2118 changequote(<<, >>)dnl
2119 << --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCPP_ENABLE_SYMVERS_DEFAULT],
2120 changequote([, ])dnl
2121 [case "$enableval" in
2122 yes) enable_symvers=yes ;;
2123 no) enable_symvers=no ;;
2124 # other names here, just as sanity checks
2125 #gnu|sun|etcetera) enable_symvers=$enableval ;;
2126 gnu) enable_symvers=$enableval ;;
2127 *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;;
2129 enable_symvers=GLIBCPP_ENABLE_SYMVERS_DEFAULT)dnl
2131 # If we never went through the GLIBCPP_CHECK_LINKER_FEATURES macro, then we
2132 # don't know enough about $LD to do tricks...
2133 if test x$enable_shared = xno ||
2135 test x$glibcpp_gnu_ld_version = x; then
2139 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
2140 AC_MSG_CHECKING([for shared libgcc])
2141 ac_save_CFLAGS="$CFLAGS"
2143 AC_TRY_LINK( , [return 0], glibcpp_shared_libgcc=yes, glibcpp_shared_libgcc=no)
2144 CFLAGS="$ac_save_CFLAGS"
2145 AC_MSG_RESULT($glibcpp_shared_libgcc)
2147 # For GNU ld, we need at least this version. It's 2.12 in the same format
2148 # as the tested-for version. See GLIBCPP_CHECK_LINKER_FEATURES for more.
2149 glibcpp_min_gnu_ld_version=21200
2151 # Check to see if unspecified "yes" value can win, given results
2153 if test $enable_symvers = yes ; then
2154 if test $with_gnu_ld = yes &&
2155 test $glibcpp_shared_libgcc = yes ;
2157 if test $glibcpp_gnu_ld_version -ge $glibcpp_min_gnu_ld_version ; then
2160 ac_test_CFLAGS="${CFLAGS+set}"
2161 ac_save_CFLAGS="$CFLAGS"
2162 CFLAGS='-shared -Wl,--version-script,conftest.map'
2165 echo 'FOO { global: f[a-z]o; local: *; };' > conftest.map
2167 AC_TRY_LINK([int foo;],, enable_symvers=gnu)
2168 if test "$ac_test_CFLAGS" = set; then
2169 CFLAGS="$ac_save_CFLAGS"
2171 # this is the suspicious part
2182 dnl Everything parsed; figure out what file to use.
2183 case $enable_symvers in
2185 LINKER_MAP=config/linker-map.dummy
2188 LINKER_MAP=config/linker-map.gnu
2192 AC_LINK_FILES($LINKER_MAP, src/linker.map)
2193 AM_CONDITIONAL(GLIBCPP_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
2194 AC_MSG_CHECKING([versioning on shared library symbols])
2195 AC_MSG_RESULT($enable_symvers)
2199 # isc-posix.m4 serial 1 (gettext-0.10.40)
2200 dnl Copyright (C) 1995-2002 Free Software Foundation, Inc.
2201 dnl This file is free software, distributed under the terms of the GNU
2202 dnl General Public License. As a special exception to the GNU General
2203 dnl Public License, this file may be distributed as part of a program
2204 dnl that contains a configuration script generated by Autoconf, under
2205 dnl the same distribution terms as the rest of that program.
2207 # This test replaces the one in autoconf.
2208 # Currently this macro should have the same name as the autoconf macro
2209 # because gettext's gettext.m4 (distributed in the automake package)
2210 # still uses it. Otherwise, the use in gettext.m4 makes autoheader
2211 # give these diagnostics:
2212 # configure.in:556: AC_TRY_COMPILE was called before AC_ISC_POSIX
2213 # configure.in:556: AC_TRY_RUN was called before AC_ISC_POSIX
2215 undefine([AC_ISC_POSIX])
2217 AC_DEFUN([AC_ISC_POSIX],
2219 dnl This test replaces the obsolescent AC_ISC_POSIX kludge.
2220 AC_CHECK_LIB(cposix, strerror, [LIBS="$LIBS -lcposix"])
2224 # Add --enable-maintainer-mode option to configure.
2229 AC_DEFUN([AM_MAINTAINER_MODE],
2230 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
2231 dnl maintainer-mode is disabled by default
2232 AC_ARG_ENABLE(maintainer-mode,
2233 [ --enable-maintainer-mode enable make rules and dependencies not useful
2234 (and sometimes confusing) to the casual installer],
2235 USE_MAINTAINER_MODE=$enableval,
2236 USE_MAINTAINER_MODE=no)
2237 AC_MSG_RESULT($USE_MAINTAINER_MODE)
2238 AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
2239 MAINT=$MAINTAINER_MODE_TRUE
2244 # Define a conditional.
2246 AC_DEFUN([AM_CONDITIONAL],
2257 # Do all the work for Automake. This macro actually does too much --
2258 # some checks are only needed if your package does certain things.
2259 # But this isn't really a big deal.
2264 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
2266 AC_DEFUN([AM_INIT_AUTOMAKE],
2267 [AC_REQUIRE([AC_PROG_INSTALL])
2272 dnl test to see if srcdir already configured
2273 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
2274 AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
2277 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
2278 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
2279 AC_REQUIRE([AM_SANITY_CHECK])
2280 AC_REQUIRE([AC_ARG_PROGRAM])
2281 dnl FIXME This is truly gross.
2282 missing_dir=`cd $ac_aux_dir && pwd`
2283 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
2284 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
2285 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
2286 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
2287 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
2288 AC_REQUIRE([AC_PROG_MAKE_SET])])
2291 # Check to make sure that the build environment is sane.
2294 AC_DEFUN([AM_SANITY_CHECK],
2295 [AC_MSG_CHECKING([whether build environment is sane])
2298 echo timestamp > conftestfile
2299 # Do `set' in a subshell so we don't clobber the current shell's
2300 # arguments. Must try -L first in case configure is actually a
2301 # symlink; some systems play weird games with the mod time of symlinks
2302 # (eg FreeBSD returns the mod time of the symlink's containing
2305 set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
2306 if test "[$]*" = "X"; then
2308 set X `ls -t $srcdir/configure conftestfile`
2310 if test "[$]*" != "X $srcdir/configure conftestfile" \
2311 && test "[$]*" != "X conftestfile $srcdir/configure"; then
2313 # If neither matched, then we have a broken ls. This can happen
2314 # if, for instance, CONFIG_SHELL is bash and it inherits a
2315 # broken ls alias from the environment. This has actually
2316 # happened. Such a system could not be considered "sane".
2317 AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
2318 alias in your environment])
2321 test "[$]2" = conftestfile
2327 AC_MSG_ERROR([newly created file is older than distributed files!
2328 Check your system clock])
2331 AC_MSG_RESULT(yes)])
2333 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
2334 dnl The program must properly implement --version.
2335 AC_DEFUN([AM_MISSING_PROG],
2336 [AC_MSG_CHECKING(for working $2)
2337 # Run test in a subshell; some versions of sh will print an error if
2338 # an executable is not found, even if stderr is redirected.
2339 # Redirect stdin to placate older versions of autoconf. Sigh.
2340 if ($2 --version) < /dev/null > /dev/null 2>&1; then
2342 AC_MSG_RESULT(found)
2345 AC_MSG_RESULT(missing)
2349 # Like AC_CONFIG_HEADER, but automatically create stamp file.
2351 AC_DEFUN([AM_CONFIG_HEADER],
2353 AC_CONFIG_HEADER([$1])
2354 dnl When config.status generates a header, we must update the stamp-h file.
2355 dnl This file resides in the same directory as the config header
2356 dnl that is generated. We must strip everything past the first ":",
2357 dnl and everything past the last "/".
2358 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
2359 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
2360 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
2362 for am_file in <<$1>>; do
2363 case " <<$>>CONFIG_HEADERS " in
2364 *" <<$>>am_file "*<<)>>
2365 echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
2368 am_indx=`expr "<<$>>am_indx" + 1`