2 dnl Initialize basic configure bits, set toplevel_srcdir for Makefiles.
4 dnl GLIBCPP_TOPREL_CONFIGURE
5 AC_DEFUN(GLIBCPP_TOPREL_CONFIGURE, [
6 dnl Default to --enable-multilib (this is also passed by default
7 dnl from the ubercommon-top-level configure)
8 AC_ARG_ENABLE(multilib,
9 [ --enable-multilib build hella library versions (default)],
10 [case "${enableval}" in
13 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
14 esac], [multilib=yes])dnl
16 # When building with srcdir == objdir, links to the source files will
17 # be created in directories within the target_subdir. We have to
18 # adjust toplevel_srcdir accordingly, so that configure finds
19 # install-sh and other auxiliary files that live in the top-level
21 if test "${srcdir}" = "."; then
22 if test -z "${with_target_subdir}"; then
25 if test "${with_target_subdir}" != "."; then
26 toprel="${with_multisrctop}../.."
28 toprel="${with_multisrctop}.."
34 AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
35 toplevel_srcdir=\${top_srcdir}/$toprel
36 AC_SUBST(toplevel_srcdir)
40 dnl Initialize the rest of the library configury.
43 AC_DEFUN(GLIBCPP_CONFIGURE, [
44 # Export build and source directories.
45 # These need to be absolute paths, yet at the same time need to
46 # canonicalize only relative paths, because then amd will not unmount
47 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
48 glibcpp_builddir=`${PWDCMD-pwd}`
50 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
51 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
53 AC_SUBST(glibcpp_builddir)
54 AC_SUBST(glibcpp_srcdir)
56 dnl This is here just to satisfy automake.
57 ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
60 # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also
61 # be 'cp -p' if linking isn't available. Uncomment the next line to
62 # force a particular method.
63 #ac_cv_prog_LN_S='cp -p'
66 # We use these options to decide which functions to include.
67 AC_ARG_WITH(target-subdir,
68 [ --with-target-subdir=SUBDIR
69 configuring in a subdirectory])
70 AC_ARG_WITH(cross-host,
71 [ --with-cross-host=HOST configuring with a cross compiler])
73 glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
74 AC_SUBST(glibcpp_basedir)
76 # Never versions of autoconf add an underscore to these functions.
77 # Prevent future problems ...
78 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
79 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
80 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
81 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
84 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
85 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
86 # are probably using a cross compiler, which will not be able to fully
87 # link an executable. This is addressed in later versions of autoconf.
89 AC_DEFUN(LIB_AC_PROG_CC,
90 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
91 dnl Fool anybody using AC_PROG_CC.
92 AC_PROVIDE([AC_PROG_CC])
93 AC_CHECK_PROG(CC, gcc, gcc)
94 if test -z "$CC"; then
95 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
96 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
101 if test $ac_cv_prog_gcc = yes; then
103 dnl Check whether -g works, even if CFLAGS is set, in case the package
104 dnl plays around with CFLAGS (such as to build both debugging and
105 dnl normal versions of a library), tasteless as that idea is.
106 ac_test_CFLAGS="${CFLAGS+set}"
107 ac_save_CFLAGS="$CFLAGS"
110 if test "$ac_test_CFLAGS" = set; then
111 CFLAGS="$ac_save_CFLAGS"
112 elif test $ac_cv_prog_cc_g = yes; then
119 test "${CFLAGS+set}" = set || CFLAGS="-g"
125 # Likewise for AC_PROG_CXX. We can't just call it directly because g++
126 # will try to link in libstdc++.
127 AC_DEFUN(LIB_AC_PROG_CXX,
128 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
129 dnl Fool anybody using AC_PROG_CXX.
130 AC_PROVIDE([AC_PROG_CXX])
131 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
132 # flags that come in CXX while configuring libstdc++. They're different
133 # from those used for all other target libraries. If CXX is set in
134 # the environment, respect that here.
136 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
137 AC_SUBST(glibcpp_CXX)
139 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
143 if test $ac_cv_prog_gxx = yes; then
145 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
146 dnl plays around with CXXFLAGS (such as to build both debugging and
147 dnl normal versions of a library), tasteless as that idea is.
148 ac_test_CXXFLAGS="${CXXFLAGS+set}"
149 ac_save_CXXFLAGS="$CXXFLAGS"
152 if test "$ac_test_CXXFLAGS" = set; then
153 CXXFLAGS="$ac_save_CXXFLAGS"
154 elif test $ac_cv_prog_cxx_g = yes; then
161 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
167 # For directory versioning (e.g., headers) and other variables.
168 AC_MSG_CHECKING([for GCC version number])
169 gcc_version=`$glibcpp_CXX -dumpversion`
170 AC_MSG_RESULT($gcc_version)
172 # For some reason, gettext needs this.
175 AC_CHECK_TOOL(AS, as)
176 AC_CHECK_TOOL(AR, ar)
177 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
182 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
183 # at least currently, we never actually build a program, so we never
184 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
185 # fails, because we are probably configuring with a cross compiler
186 # which can't create executables. So we include AC_EXEEXT to keep
187 # automake happy, but we don't execute it, since we don't care about
190 # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
191 # to nothing, so nothing would remain between `then' and `fi' if it
192 # were not for the `:' below.
197 case [$]{glibcpp_basedir} in
198 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
199 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
202 # Find platform-specific directories containing configuration info. In
203 # addition to possibly modifying the same flags, it also sets up symlinks.
209 dnl Check to see if g++ can compile this library, and if so, if any version-
210 dnl specific precautions need to be taken.
212 dnl GLIBCPP_CHECK_COMPILER_VERSION
213 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
214 if test ! -f stamp-sanity-compiler; then
215 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
222 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
224 AC_MSG_RESULT($gpp_satisfactory)
225 touch stamp-sanity-compiler
231 dnl Tests for newer compiler features, or features that are present in newer
232 dnl compiler versions but not older compiler versions still in use, should
235 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
236 dnl new inlining code or the new system_header pragma will die on -Werror.
237 dnl Leave it out by default and use maint-mode to use it.
239 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
240 dnl compiler supports it and the user has not requested debug mode.
242 dnl GLIBCPP_CHECK_COMPILER_FEATURES
243 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
244 # All these tests are for C++; save the language and the compiler flags.
245 # The CXXFLAGS thing is suspicious, but based on similar bits previously
246 # found in GLIBCPP_CONFIGURE.
249 ac_test_CXXFLAGS="${CXXFLAGS+set}"
250 ac_save_CXXFLAGS="$CXXFLAGS"
252 # Check for maintainer-mode bits.
253 if test x"$USE_MAINTAINER_MODE" = xno; then
259 # Check for -ffunction-sections -fdata-sections
260 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
261 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
262 AC_TRY_COMPILE(, [int foo;
263 ], [ac_fdsections=yes], [ac_fdsections=no])
264 if test "$ac_test_CXXFLAGS" = set; then
265 CXXFLAGS="$ac_save_CXXFLAGS"
267 # this is the suspicious part
270 if test x"$ac_fdsections" = x"yes" &&
271 test x"$enable_debug" = x"no"; then
272 SECTION_FLAGS='-ffunction-sections -fdata-sections'
274 AC_MSG_RESULT($ac_fdsections)
278 AC_SUBST(SECTION_FLAGS)
283 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
284 dnl the native linker is in use, all variables will be defined to something
285 dnl safe (like an empty string).
287 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
288 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
289 dnl Define LD, with_gnu_ld, and (possibly) glibcpp_gnu_ld_version as
290 dnl side-effects of testing.
292 dnl GLIBCPP_CHECK_LINKER_FEATURES
293 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
294 # If we're not using GNU ld, then there's no point in even trying these
295 # tests. Check for that first. We should have already tested for gld
296 # by now (in libtool), but require it now just to be safe...
297 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
298 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
299 AC_REQUIRE([AC_PROG_LD])
301 # The name set by libtool depends on the version of libtool. Shame on us
302 # for depending on an impl detail, but c'est la vie. Older versions used
303 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
304 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
305 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
306 # set (hence we're using an older libtool), then set it.
307 if test x${with_gnu_ld+set} != xset; then
308 if test x${ac_cv_prog_gnu_ld+set} != xset; then
309 # We got through "ac_require(ac_prog_ld)" and still not set? Huh?
312 with_gnu_ld=$ac_cv_prog_gnu_ld
316 # Start by getting the version number. I think the libtool test already
317 # does some of this, but throws away the result.
319 ldver=`$LD --version 2>/dev/null | head -1 | \
320 sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
322 glibcpp_gnu_ld_version=`echo $ldver | \
323 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
326 if test "$with_gnu_ld" = "notbroken"; then
327 # GNU ld it is! Joy and bunny rabbits!
329 # All these tests are for C++; save the language and the compiler flags.
330 # Need to do this so that g++ won't try to link in libstdc++
331 ac_test_CFLAGS="${CFLAGS+set}"
332 ac_save_CFLAGS="$CFLAGS"
333 CFLAGS='-x c++ -Wl,--gc-sections'
335 # Check for -Wl,--gc-sections
336 # XXX This test is broken at the moment, as symbols required for
337 # linking are now in libsupc++ (not built yet.....). In addition,
338 # this test has cored on solaris in the past. In addition,
339 # --gc-sections doesn't really work at the moment (keeps on discarding
340 # used sections, first .eh_frame and now some of the glibc sections for
341 # iconv). Bzzzzt. Thanks for playing, maybe next time.
342 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
350 ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
351 if test "$ac_test_CFLAGS" = set; then
352 CFLAGS="$ac_save_CFLAGS"
354 # this is the suspicious part
357 if test "$ac_sectionLDflags" = "yes"; then
358 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
360 AC_MSG_RESULT($ac_sectionLDflags)
363 # Set linker optimization flags.
364 if test x"$with_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then
365 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
368 AC_SUBST(SECTION_LDFLAGS)
369 AC_SUBST(OPT_LDFLAGS)
374 dnl Check to see if the (math function) argument passed is
375 dnl declared when using the c++ compiler
376 dnl ASSUMES argument is a math function with ONE parameter
378 dnl GLIBCPP_CHECK_MATH_DECL_1
379 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
380 AC_MSG_CHECKING([for $1 declaration])
381 if test x${glibcpp_cv_func_$1_use+set} != xset; then
382 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
385 AC_TRY_COMPILE([#include <math.h>
391 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
395 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
399 dnl Check to see if the (math function) argument passed is
400 dnl 1) declared when using the c++ compiler
401 dnl 2) has "C" linkage
402 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
404 dnl Define HAVE_CARGF etc if "cargf" is declared and links
406 dnl argument 1 is name of function to check
408 dnl ASSUMES argument is a math function with ONE parameter
410 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
411 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
412 GLIBCPP_CHECK_MATH_DECL_1($1)
413 if test x$glibcpp_cv_func_$1_use = x"yes"; then
416 GLIBCPP_CHECK_MATH_DECL_1(_$1)
417 if test x$glibcpp_cv_func__$1_use = x"yes"; then
425 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
426 dnl of functions at once. It's an all-or-nothing check -- either
427 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
428 dnl Doing it this way saves significant configure time.
429 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
430 AC_MSG_CHECKING([for $1 functions])
431 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
434 AC_TRY_COMPILE([#include <math.h>],
435 [ `for x in $3; do echo "$x (0);"; done` ],
436 [glibcpp_cv_func_$2_use=yes],
437 [glibcpp_cv_func_$2_use=no])
439 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
440 if test x$glibcpp_cv_func_$2_use = x"yes"; then
446 dnl Check to see if the (math function) argument passed is
447 dnl declared when using the c++ compiler
448 dnl ASSUMES argument is a math function with TWO parameters
450 dnl GLIBCPP_CHECK_MATH_DECL_2
451 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
452 AC_MSG_CHECKING([for $1 declaration])
453 if test x${glibcpp_cv_func_$1_use+set} != xset; then
454 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
457 AC_TRY_COMPILE([#include <math.h>],
459 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
463 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
467 dnl Check to see if the (math function) argument passed is
468 dnl 1) declared when using the c++ compiler
469 dnl 2) has "C" linkage
471 dnl Define HAVE_CARGF etc if "cargf" is declared and links
473 dnl argument 1 is name of function to check
475 dnl ASSUMES argument is a math function with TWO parameters
477 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
478 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
479 GLIBCPP_CHECK_MATH_DECL_2($1)
480 if test x$glibcpp_cv_func_$1_use = x"yes"; then
483 GLIBCPP_CHECK_MATH_DECL_2(_$1)
484 if test x$glibcpp_cv_func__$1_use = x"yes"; then
492 dnl Check to see if the (math function) argument passed is
493 dnl declared when using the c++ compiler
494 dnl ASSUMES argument is a math function with THREE parameters
496 dnl GLIBCPP_CHECK_MATH_DECL_3
497 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
498 AC_MSG_CHECKING([for $1 declaration])
499 if test x${glibcpp_cv_func_$1_use+set} != xset; then
500 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
503 AC_TRY_COMPILE([#include <math.h>],
505 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
509 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
513 dnl Check to see if the (math function) argument passed is
514 dnl 1) declared when using the c++ compiler
515 dnl 2) has "C" linkage
517 dnl Define HAVE_CARGF etc if "cargf" is declared and links
519 dnl argument 1 is name of function to check
521 dnl ASSUMES argument is a math function with THREE parameters
523 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
524 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
525 GLIBCPP_CHECK_MATH_DECL_3($1)
526 if test x$glibcpp_cv_func_$1_use = x"yes"; then
529 GLIBCPP_CHECK_MATH_DECL_3(_$1)
530 if test x$glibcpp_cv_func__$1_use = x"yes"; then
538 dnl Check to see if the (stdlib function) argument passed is
539 dnl 1) declared when using the c++ compiler
540 dnl 2) has "C" linkage
542 dnl argument 1 is name of function to check
544 dnl ASSUMES argument is a math function with TWO parameters
546 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
547 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
548 AC_MSG_CHECKING([for $1 declaration])
549 if test x${glibcpp_cv_func_$1_use+set} != xset; then
550 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
553 AC_TRY_COMPILE([#include <stdlib.h>],
555 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
559 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
560 if test x$glibcpp_cv_func_$1_use = x"yes"; then
567 dnl Check to see if the (stdlib function) argument passed is
568 dnl 1) declared when using the c++ compiler
569 dnl 2) has "C" linkage
571 dnl argument 1 is name of function to check
573 dnl ASSUMES argument is a function with THREE parameters
575 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3
576 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3, [
577 AC_MSG_CHECKING([for $1 declaration])
578 if test x${glibcpp_cv_func_$1_use+set} != xset; then
579 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
582 AC_TRY_COMPILE([#include <stdlib.h>],
584 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
588 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
589 if test x$glibcpp_cv_func_$1_use = x"yes"; then
596 dnl Because the builtins are picky picky picky about the arguments they take,
597 dnl do an explict linkage tests here.
598 dnl Check to see if the (math function) argument passed is
599 dnl 1) declared when using the c++ compiler
600 dnl 2) has "C" linkage
602 dnl Define HAVE_CARGF etc if "cargf" is declared and links
604 dnl argument 1 is name of function to check
606 dnl ASSUMES argument is a math function with ONE parameter
608 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
609 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
610 AC_MSG_CHECKING([for $1 declaration])
611 if test x${glibcpp_cv_func_$1_use+set} != xset; then
612 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
615 AC_TRY_COMPILE([#include <math.h>],
617 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
621 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
622 if test x$glibcpp_cv_func_$1_use = x"yes"; then
623 AC_MSG_CHECKING([for $1 linkage])
624 if test x${glibcpp_cv_func_$1_link+set} != xset; then
625 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
626 AC_TRY_LINK([#include <math.h>],
628 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
631 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
632 if test x$glibcpp_cv_func_$1_link = x"yes"; then
633 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
634 AC_DEFINE_UNQUOTED(${ac_tr_func})
641 dnl Check to see what builtin math functions are supported
643 dnl check for __builtin_abs
644 dnl check for __builtin_fabsf
645 dnl check for __builtin_fabs
646 dnl check for __builtin_fabl
647 dnl check for __builtin_labs
648 dnl check for __builtin_sqrtf
649 dnl check for __builtin_sqrtl
650 dnl check for __builtin_sqrt
651 dnl check for __builtin_sinf
652 dnl check for __builtin_sin
653 dnl check for __builtin_sinl
654 dnl check for __builtin_cosf
655 dnl check for __builtin_cos
656 dnl check for __builtin_cosl
658 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
659 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
660 dnl Test for builtin math functions.
661 dnl These are made in gcc/c-common.c
662 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
663 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
664 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
665 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
666 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
668 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
669 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
670 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
672 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
673 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
674 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
676 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
677 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
678 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
680 dnl There is, without a doubt, a more elegant way to have these
681 dnl names exported so that they won't be stripped out of acconfig.h by
682 dnl autoheader. I leave this as an exercise to somebody less frustrated
683 dnl than I.... please email the libstdc++ list if you can figure out a
684 dnl more elegant approach (see autoconf/acgen.m4 and specifically
685 dnl AC_CHECK_FUNC for things to steal.)
687 if test x$dummyvar = x"yes"; then
688 AC_DEFINE(HAVE___BUILTIN_ABS)
689 AC_DEFINE(HAVE___BUILTIN_LABS)
690 AC_DEFINE(HAVE___BUILTIN_COS)
691 AC_DEFINE(HAVE___BUILTIN_COSF)
692 AC_DEFINE(HAVE___BUILTIN_COSL)
693 AC_DEFINE(HAVE___BUILTIN_FABS)
694 AC_DEFINE(HAVE___BUILTIN_FABSF)
695 AC_DEFINE(HAVE___BUILTIN_FABSL)
696 AC_DEFINE(HAVE___BUILTIN_SIN)
697 AC_DEFINE(HAVE___BUILTIN_SINF)
698 AC_DEFINE(HAVE___BUILTIN_SINL)
699 AC_DEFINE(HAVE___BUILTIN_SQRT)
700 AC_DEFINE(HAVE___BUILTIN_SQRTF)
701 AC_DEFINE(HAVE___BUILTIN_SQRTL)
707 dnl Check to see what the underlying c library
708 dnl These checks need to do two things:
709 dnl 1) make sure the name is declared when using the c++ compiler
710 dnl 2) make sure the name has "C" linkage
711 dnl This might seem like overkill but experience has shown that it's not...
713 dnl Define HAVE_STRTOLD if "strtold" is declared and links
714 dnl Define HAVE_STRTOF if "strtof" is declared and links
715 dnl Define HAVE_DRAND48 if "drand48" is declared and links
717 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
718 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
719 ac_test_CXXFLAGS="${CXXFLAGS+set}"
720 ac_save_CXXFLAGS="$CXXFLAGS"
721 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
723 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
724 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
725 AC_CHECK_FUNCS(drand48)
727 CXXFLAGS="$ac_save_CXXFLAGS"
732 dnl Check to see what the underlying c library or math library is like.
733 dnl These checks need to do two things:
734 dnl 1) make sure the name is declared when using the c++ compiler
735 dnl 2) make sure the name has "C" linkage
736 dnl This might seem like overkill but experience has shown that it's not...
738 dnl Define HAVE_CARGF etc if "cargf" is found.
740 dnl GLIBCPP_CHECK_MATH_SUPPORT
741 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
742 ac_test_CXXFLAGS="${CXXFLAGS+set}"
743 ac_save_CXXFLAGS="$CXXFLAGS"
744 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
747 AC_CHECK_LIB(m, sin, libm="-lm")
751 dnl Check to see if certain C math functions exist.
752 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
753 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
754 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
755 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
756 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
757 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
758 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
759 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
761 dnl Check to see if basic C math functions have float versions.
762 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
767 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
770 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
771 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
772 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
773 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
774 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
775 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
776 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
777 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
778 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
779 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
780 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
781 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
782 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
783 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
784 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
785 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
787 dnl Check to see if basic C math functions have long double versions.
788 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
793 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
796 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
797 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
798 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
799 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
800 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
801 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
802 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
803 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
804 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
805 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
806 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
807 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
808 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
809 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
810 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
811 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
812 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
814 dnl Some runtimes have these functions with a preceding underscore. Please
815 dnl keep this sync'd with the one above. And if you add any new symbol,
816 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
817 dnl Check to see if certain C math functions exist.
819 dnl Check to see if basic C math functions have float versions.
820 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
822 _acosf _asinf _atanf \
824 _coshf _sinhf _tanhf)
825 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
829 dnl Check to see if basic C math functions have long double versions.
830 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
832 _acosl _asinl _atanl \
834 _coshl _sinhl _tanhl)
835 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
840 CXXFLAGS="$ac_save_CXXFLAGS"
845 dnl Check to see if there is native support for complex
847 dnl Don't compile bits in math/* if native support exits.
849 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
851 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
852 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
853 dnl Check for complex versions of math functions of platform.
854 AC_CHECK_LIB(m, main)
855 AC_REPLACE_MATHFUNCS(nan copysignf)
857 dnl For __signbit to signbit conversions.
858 AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
859 AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
861 dnl Compile the long double complex functions only if the function
862 dnl provides the non-complex long double functions that are needed.
863 dnl Currently this includes copysignl, which should be
864 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
865 if test x$ac_cv_func_copysignl = x"yes"; then
866 AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
869 AC_SUBST(LIBMATHOBJS)
873 dnl Check to see what architecture and operating system we are compiling
874 dnl for. Also, if architecture- or OS-specific flags are required for
875 dnl compilation, pick them up here.
877 dnl GLIBCPP_CHECK_TARGET
878 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
879 . [$]{glibcpp_basedir}/configure.target
880 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
881 AC_MSG_RESULT(OS config directory is $os_include_dir)
886 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
887 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
888 dnl must have been previously checked.)
890 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
891 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
893 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
894 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
896 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
897 dnl others even if wchar_t support is not on.
898 AC_MSG_CHECKING([for mbstate_t])
899 AC_TRY_COMPILE([#include <wchar.h>],
900 [mbstate_t teststate;],
901 have_mbstate_t=yes, have_mbstate_t=no)
902 AC_MSG_RESULT($have_mbstate_t)
903 if test x"$have_mbstate_t" = xyes; then
904 AC_DEFINE(HAVE_MBSTATE_T)
907 dnl Sanity check for existence of ISO C99 headers for extended encoding.
908 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
909 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
911 dnl Only continue checking if the ISO C99 headers exist and support is on.
912 if test x"$ac_has_wchar_h" = xyes &&
913 test x"$ac_has_wctype_h" = xyes &&
914 test x"$enable_c_mbchar" != xno; then
916 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
917 dnl numeric_limits can instantiate type_traits<wchar_t>
918 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
919 AC_TRY_COMPILE([#include <wchar.h>],
920 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
921 has_wchar_minmax=yes, has_wchar_minmax=no)
922 AC_MSG_RESULT($has_wchar_minmax)
924 dnl Test wchar.h for WEOF, which is what we use to determine whether
925 dnl to specialize for char_traits<wchar_t> or not.
926 AC_MSG_CHECKING([for WEOF])
929 #include <stddef.h>],
931 has_weof=yes, has_weof=no)
932 AC_MSG_RESULT($has_weof)
934 dnl Tests for wide character functions used in char_traits<wchar_t>.
936 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
939 dnl Checks for names injected into std:: by the c_std headers.
940 AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
941 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
942 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
943 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
944 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
945 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
948 AC_MSG_CHECKING([for ISO C99 wchar_t support])
949 if test x"$has_weof" = xyes &&
950 test x"$has_wchar_minmax" = xyes &&
951 test x"$ac_wfuncs" = xyes; then
952 ac_isoC99_wchar_t=yes
956 AC_MSG_RESULT($ac_isoC99_wchar_t)
958 dnl Use iconv for wchar_t to char conversions. As such, check for
959 dnl X/Open Portability Guide, version 2 features (XPG2).
960 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
961 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
963 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
964 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
966 LIBS="$LIBS $libiconv"
968 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
969 ac_XPG2funcs=yes, ac_XPG2funcs=no)
973 AC_MSG_CHECKING([for XPG2 wchar_t support])
974 if test x"$ac_has_iconv_h" = xyes &&
975 test x"$ac_has_langinfo_h" = xyes &&
976 test x"$ac_XPG2funcs" = xyes; then
981 AC_MSG_RESULT($ac_XPG2_wchar_t)
983 dnl At the moment, only enable wchar_t specializations if all the
984 dnl above support is present.
985 AC_MSG_CHECKING([for enabled wchar_t specializations])
986 if test x"$ac_isoC99_wchar_t" = xyes &&
987 test x"$ac_XPG2_wchar_t" = xyes; then
988 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
994 dnl Wide characters disabled by the user.
995 AC_MSG_WARN([wchar_t support disabled.])
1001 dnl Check for special debugging mode; not for production use.
1003 dnl GLIBCPP_ENABLE_DEBUG
1004 dnl --enable-debug sets '-ggdb3 -O0'.
1005 dnl --disable-debug sets '-g' and whatever optimization options the
1006 dnl compiler can handle.
1007 dnl + --enable-maintainer-mode automatically defaults this to on.
1008 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1009 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1010 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1011 dnl defaults to `no'.
1012 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1013 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1014 AC_ARG_ENABLE(debug,
1015 changequote(<<, >>)dnl
1016 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1017 changequote([, ])dnl
1018 [case "${enableval}" in
1019 yes) enable_debug=yes ;;
1020 no) enable_debug=no ;;
1021 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1023 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1025 dnl Option parsed, now set things appropriately
1026 case "${enable_debug}" in
1028 DEBUG_FLAGS='-O0 -ggdb3'
1034 AC_SUBST(DEBUG_FLAGS)
1039 dnl Check for "unusual" flags to pass to the compiler while building.
1041 dnl GLIBCPP_ENABLE_CXX_FLAGS
1042 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1043 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1044 dnl Somehow this same set of flags must be passed when [re]building
1046 dnl --disable-cxx-flags passes nothing.
1047 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1048 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1049 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1050 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1051 dnl If "default flags" is an empty string (or "none"), the effect is
1052 dnl the same as --disable or --enable=no.
1053 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1054 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1055 AC_ARG_ENABLE(cxx-flags,
1056 changequote(<<, >>)dnl
1057 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1058 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1059 changequote([, ])dnl
1060 [case "x$enableval" in
1062 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1064 enable_cxx_flags='' ;;
1066 enable_cxx_flags="$enableval" ;;
1068 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1070 dnl Thinko on my part during design. This kludge is the workaround.
1071 if test "$enable_cxx_flags" = "none"; then
1072 enable_cxx_flags='';
1075 dnl Run through flags (either default or command-line) and set anything
1076 dnl extra (e.g., #defines) that must accompany particular g++ options.
1077 if test -n "$enable_cxx_flags"; then
1078 for f in $enable_cxx_flags; do
1082 *) # and we're trying to pass /what/ exactly?
1083 AC_MSG_ERROR([compiler flags start with a -]) ;;
1087 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1088 AC_SUBST(EXTRA_CXX_FLAGS)
1093 dnl Check for which locale library to use: gnu or generic.
1095 dnl GLIBCPP_ENABLE_CLOCALE
1096 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1097 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1099 dnl default is generic
1101 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1102 AC_MSG_CHECKING([for clocale to use])
1103 AC_ARG_ENABLE(clocale,
1104 [ --enable-clocale enable model for target locale package.
1105 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1107 if test x$enable_clocale = xno; then
1112 enable_clocale_flag=$enable_clocale
1114 dnl Probe for locale support if no specific model is specified.
1115 dnl Default to "generic"
1116 if test x$enable_clocale_flag = xno; then
1117 case x${target_os} in
1119 AC_EGREP_CPP([_GLIBCPP_ok], [
1120 #include <features.h>
1121 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1124 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1126 # Test for bugs early in glibc-2.2.x series
1127 if test x$enable_clocale_flag = xgnu; then
1129 #define _GNU_SOURCE 1
1133 const char __one[] = "Äuglein Augmen";
1134 const char __two[] = "Äuglein";
1139 loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1140 loc_dup = __duplocale(loc);
1141 i = __strcoll_l(__one, __two, loc);
1142 j = __strcoll_l(__one, __two, loc_dup);
1146 [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1147 [enable_clocale_flag=generic])
1150 # ... at some point put __strxfrm_l tests in as well.
1153 enable_clocale_flag=generic
1158 dnl Deal with gettext issues.
1160 [ --enable-nls use Native Language Support (default)],
1164 dnl Set configure bits for specified locale package
1165 case x${enable_clocale_flag} in
1167 AC_MSG_RESULT(generic)
1169 CLOCALE_H=config/locale/generic/c_locale.h
1170 CLOCALE_CC=config/locale/generic/c_locale.cc
1171 CCODECVT_H=config/locale/generic/codecvt_specializations.h
1172 CCOLLATE_CC=config/locale/generic/collate_members.cc
1173 CCTYPE_CC=config/locale/generic/ctype_members.cc
1174 CMESSAGES_H=config/locale/generic/messages_members.h
1175 CMESSAGES_CC=config/locale/generic/messages_members.cc
1176 CMONEY_CC=config/locale/generic/monetary_members.cc
1177 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1178 CTIME_CC=config/locale/generic/time_members.cc
1183 # Declare intention to use gettext, and add support for specific
1185 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1188 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1189 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1190 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1193 # Export the build objects.
1194 for ling in $ALL_LINGUAS; do \
1195 glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1196 glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1198 AC_SUBST(glibcpp_MOFILES)
1199 AC_SUBST(glibcpp_POFILES)
1201 CLOCALE_H=config/locale/gnu/c_locale.h
1202 CLOCALE_CC=config/locale/gnu/c_locale.cc
1203 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1204 CCOLLATE_CC=config/locale/gnu/collate_members.cc
1205 CCTYPE_CC=config/locale/gnu/ctype_members.cc
1206 CMESSAGES_H=config/locale/gnu/messages_members.h
1207 CMESSAGES_CC=config/locale/gnu/messages_members.cc
1208 CMONEY_CC=config/locale/gnu/monetary_members.cc
1209 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1210 CTIME_CC=config/locale/gnu/time_members.cc
1213 AC_MSG_RESULT(generic)
1215 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1216 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1217 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1218 CCOLLATE_CC=config/locale/generic/collate_members.cc
1219 CCTYPE_CC=config/locale/generic/ctype_members.cc
1220 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1221 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1222 CMONEY_CC=config/locale/generic/monetary_members.cc
1223 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1224 CTIME_CC=config/locale/generic/time_members.cc
1227 echo "$enable_clocale is an unknown locale package" 1>&2
1232 # This is where the testsuite looks for locale catalogs, using the
1233 # -DLOCALEDIR define during testsuite compilation.
1234 glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1235 AC_SUBST(glibcpp_localedir)
1239 AC_SUBST(CCODECVT_H)
1240 AC_SUBST(CMESSAGES_H)
1241 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1242 AC_LINK_FILES($CCOLLATE_CC, src/collate.cc)
1243 AC_LINK_FILES($CCTYPE_CC, src/ctype.cc)
1244 AC_LINK_FILES($CMESSAGES_CC, src/messages.cc)
1245 AC_LINK_FILES($CMONEY_CC, src/monetary.cc)
1246 AC_LINK_FILES($CNUMERIC_CC, src/numeric.cc)
1247 AC_LINK_FILES($CTIME_CC, src/time.cc)
1252 dnl Check for which I/O library to use: libio, or something specific.
1254 dnl GLIBCPP_ENABLE_CSTDIO
1255 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1257 dnl default is stdio
1259 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1260 AC_MSG_CHECKING([for cstdio to use])
1261 AC_ARG_ENABLE(cstdio,
1262 [ --enable-cstdio enable stdio for target io package.
1263 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1265 if test x$enable_cstdio = xno; then
1268 enable_cstdio=stdio)
1270 enable_cstdio_flag=$enable_cstdio
1272 dnl Check if a valid I/O package
1273 case x${enable_cstdio_flag} in
1275 CSTDIO_H=config/io/c_io_libio.h
1276 BASIC_FILE_H=config/io/basic_file_libio.h
1277 BASIC_FILE_CC=config/io/basic_file_libio.cc
1278 AC_MSG_RESULT(libio)
1280 # see if we are on a system with libio native (ie, linux)
1281 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1283 # Need to check and see what version of glibc is being used. If
1284 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1285 # compile most of libio for linux systems.
1286 if test x$has_libio = x"yes"; then
1289 AC_MSG_CHECKING([for glibc version >= 2.2])
1290 AC_EGREP_CPP([ok], [
1291 #include <features.h>
1292 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1295 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1296 AC_MSG_RESULT($glibc_satisfactory)
1300 # XXX at the moment, admit defeat and force the recompilation
1301 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1302 glibc_satisfactory=no
1304 if test x$glibc_satisfactory = x"yes"; then
1309 # bkoz XXX need to add checks to enable this
1310 # pme XXX here's a first pass at such a check
1311 if test x$enable_c_mbchar != xno; then
1319 # Using libio, but <libio.h> doesn't exist on the target system. . .
1321 # bkoz XXX need to add checks to enable this
1322 # pme XXX here's a first pass at such a check
1323 if test x$enable_c_mbchar != xno; then
1330 xstdio | x | xno | xnone | xyes)
1332 CSTDIO_H=config/io/c_io_stdio.h
1333 BASIC_FILE_H=config/io/basic_file_stdio.h
1334 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1335 AC_MSG_RESULT(stdio)
1337 # We're not using stdio.
1342 echo "$enable_cstdio is an unknown io package" 1>&2
1347 AC_SUBST(BASIC_FILE_H)
1348 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1350 # 2000-08-04 bkoz hack
1351 CCODECVT_C=config/io/c_io_libio_codecvt.c
1352 AC_SUBST(CCODECVT_C)
1353 # 2000-08-04 bkoz hack
1355 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1356 test "$need_libio" = yes || test "$need_wlibio" = yes)
1357 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1358 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1359 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1360 libio_la=../libio/libio.la
1369 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1370 dnl We must stage the required headers so that they will be installed
1371 dnl with the library (unlike libgcc, the STL implementation is provided
1372 dnl solely within headers). Since we must not inject random user-space
1373 dnl macro names into user-provided C++ code, we first stage into <file>-in
1374 dnl and process to <file> with an output command. The reason for a two-
1375 dnl stage process here is to correctly handle $srcdir!=$objdir without
1376 dnl having to write complex code (the sed commands to clean the macro
1377 dnl namespace are complex and fragile enough as it is). We must also
1378 dnl add a relative path so that -I- is supported properly.
1380 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1381 AC_MSG_CHECKING([for thread model used by GCC])
1382 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1383 AC_MSG_RESULT([$target_thread_file])
1385 if test $target_thread_file != single; then
1386 AC_DEFINE(HAVE_GTHR_DEFAULT)
1387 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1390 glibcpp_thread_h=gthr-$target_thread_file.h
1391 AC_SUBST(glibcpp_thread_h)
1396 dnl Check for exception handling support. If an explicit enable/disable
1397 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1398 dnl target may or may not support call frame exceptions.
1400 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1401 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1402 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1404 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1406 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1407 AC_MSG_CHECKING([for exception model to use])
1410 AC_ARG_ENABLE(sjlj-exceptions,
1411 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1413 [dnl Botheration. Now we've got to detect the exception model.
1414 dnl Link tests against libgcc.a are problematic since -- at least
1415 dnl as of this writing -- we've not been given proper -L bits for
1416 dnl single-tree newlib and libgloss.
1418 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1419 dnl conftest files before we got a change to grep them first.
1420 cat > conftest.$ac_ext << EOF
1421 [#]line __oline__ "configure"
1430 old_CXXFLAGS="$CXXFLAGS"
1432 if AC_TRY_EVAL(ac_compile); then
1433 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1434 enable_sjlj_exceptions=yes
1435 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1436 enable_sjlj_exceptions=no
1439 CXXFLAGS="$old_CXXFLAGS"
1441 if test x$enable_sjlj_exceptions = xyes; then
1442 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1443 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1444 ac_exception_model_name=sjlj
1445 elif test x$enable_sjlj_exceptions = xno; then
1446 ac_exception_model_name="call frame"
1448 AC_MSG_ERROR([unable to detect exception model])
1451 AC_MSG_RESULT($ac_exception_model_name)
1456 dnl Check for libunwind exception handling support. If enabled then
1457 dnl we assume that the _Unwind_* functions that make up the Unwind ABI
1458 dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by
1459 dnl libunwind instead of libgcc and that libstdc++ has a dependency
1460 dnl on libunwind as well as libgcc.
1462 dnl GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
1463 dnl --enable-libunwind-exceptions forces the use of libunwind.
1464 dnl --disable-libunwind-exceptions assumes there is no libunwind.
1466 dnl Define _GLIBCPP_LIBUNWIND_EXCEPTIONS if requested.
1468 AC_DEFUN(GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS, [
1469 AC_MSG_CHECKING([for use of libunwind])
1470 AC_ARG_ENABLE(libunwind-exceptions,
1471 [ --enable-libunwind-exceptions force use of libunwind for exceptions],
1472 use_libunwind_exceptions=$enableval,
1473 use_libunwind_exceptions=no)
1474 AC_MSG_RESULT($use_libunwind_exceptions)
1475 dnl Option parsed, now set things appropriately
1476 if test x"$use_libunwind_exceptions" = xyes; then
1477 LIBUNWIND_FLAG="-lunwind"
1481 AC_SUBST(LIBUNWIND_FLAG)
1485 dnl Check for ISO/IEC 9899:1999 "C99" support.
1487 dnl GLIBCPP_ENABLE_C99
1488 dnl --enable-c99 defines _GLIBCPP_USE_C99
1489 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1490 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1491 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1492 dnl defaults to `no'.
1493 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1495 dnl GLIBCPP_ENABLE_C99
1496 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1497 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1500 changequote(<<, >>)dnl
1501 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1502 changequote([, ])dnl
1503 [case "$enableval" in
1504 yes) enable_c99=yes ;;
1505 no) enable_c99=no ;;
1506 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1508 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1513 # Check for the existence of <math.h> functions used if C99 is enabled.
1515 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1516 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1517 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1518 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1519 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1520 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1521 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1522 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1523 AC_TRY_COMPILE([#include <math.h>],
1524 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1525 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1526 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1527 AC_TRY_COMPILE([#include <math.h>],
1528 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1529 AC_TRY_COMPILE([#include <math.h>],
1530 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1531 AC_MSG_RESULT($ac_c99_math)
1533 # Check for the existence in <stdio.h> of vscanf, et. al.
1535 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1536 AC_TRY_COMPILE([#include <stdio.h>],
1537 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1538 AC_TRY_COMPILE([#include <stdio.h>
1540 void foo(char* fmt, ...)
1541 {va_list args; va_start(args, fmt);
1542 vfscanf(stderr, "%i", args);}],
1543 [],, [ac_c99_stdio=no])
1544 AC_TRY_COMPILE([#include <stdio.h>
1546 void foo(char* fmt, ...)
1547 {va_list args; va_start(args, fmt);
1548 vscanf("%i", args);}],
1549 [],, [ac_c99_stdio=no])
1550 AC_TRY_COMPILE([#include <stdio.h>
1552 void foo(char* fmt, ...)
1553 {va_list args; va_start(args, fmt);
1554 vsnprintf(fmt, 0, "%i", args);}],
1555 [],, [ac_c99_stdio=no])
1556 AC_TRY_COMPILE([#include <stdio.h>
1558 void foo(char* fmt, ...)
1559 {va_list args; va_start(args, fmt);
1560 vsscanf(fmt, "%i", args);}],
1561 [],, [ac_c99_stdio=no])
1562 AC_MSG_RESULT($ac_c99_stdio)
1564 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1566 AC_MSG_CHECKING([for lldiv_t declaration])
1567 AC_CACHE_VAL(ac_c99_lldiv_t, [
1568 AC_TRY_COMPILE([#include <stdlib.h>],
1570 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1572 AC_MSG_RESULT($ac_c99_lldiv_t)
1574 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1575 AC_TRY_COMPILE([#include <stdlib.h>],
1576 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1577 AC_TRY_COMPILE([#include <stdlib.h>],
1578 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1579 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1580 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1581 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1582 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1583 if test x"$ac_c99_lldiv_t" = x"no"; then
1586 AC_MSG_RESULT($ac_c99_stdlib)
1588 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1589 # XXX the wchar.h checks should be rolled into the general C99 bits.
1591 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1592 AC_TRY_COMPILE([#include <wchar.h>],
1593 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1594 AC_TRY_COMPILE([#include <wchar.h>],
1595 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1596 AC_TRY_COMPILE([#include <wchar.h>],
1597 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1598 AC_MSG_RESULT($ac_c99_wchar)
1600 AC_MSG_CHECKING([for enabled ISO C99 support])
1601 if test x"$ac_c99_math" = x"no" ||
1602 test x"$ac_c99_stdio" = x"no" ||
1603 test x"$ac_c99_stdlib" = x"no" ||
1604 test x"$ac_c99_wchar" = x"no"; then
1607 AC_MSG_RESULT($enable_c99)
1609 # Option parsed, now set things appropriately
1610 if test x"$enable_c99" = x"yes"; then
1611 AC_DEFINE(_GLIBCPP_USE_C99)
1619 dnl Check for template specializations for the 'long long' type extension.
1620 dnl The result determines only whether 'long long' I/O is enabled; things
1621 dnl like numeric_limits<> specializations are always available.
1623 dnl GLIBCPP_ENABLE_LONG_LONG
1624 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1625 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1626 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1627 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1628 dnl defaults to `no'.
1629 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1631 dnl GLIBCPP_ENABLE_LONG_LONG
1632 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1633 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1635 AC_ARG_ENABLE(long-long,
1636 changequote(<<, >>)dnl
1637 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1638 changequote([, ])dnl
1639 [case "$enableval" in
1640 yes) enable_long_long=yes ;;
1641 no) enable_long_long=no ;;
1642 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1644 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1649 AC_MSG_CHECKING([for enabled long long I/O support])
1650 # iostreams require strtoll, strtoull to compile
1651 AC_TRY_COMPILE([#include <stdlib.h>],
1652 [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1653 AC_TRY_COMPILE([#include <stdlib.h>],
1654 [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1656 # Option parsed, now set things appropriately
1657 if test x"$enable_long_long" = xyes; then
1658 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1660 AC_MSG_RESULT($enable_long_long)
1667 dnl Check for what kind of C headers to use.
1669 dnl GLIBCPP_ENABLE_CHEADERS
1670 dnl --enable-cheaders= [does stuff].
1671 dnl --disable-cheaders [does not do anything, really].
1672 dnl + This will eventually need to be 'c_shadow' by default.
1673 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1674 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1675 dnl If ommitted, it defaults to `c_std'.
1676 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1677 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1678 AC_MSG_CHECKING([for c header strategy to use])
1679 AC_ARG_ENABLE(cheaders,
1680 changequote(<<, >>)dnl
1681 << --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1683 [case "$enableval" in
1688 enable_cheaders=c_std
1691 enable_cheaders=c_shadow
1693 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1696 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1697 AC_MSG_RESULT($enable_cheaders)
1699 dnl Option parsed, now set things appropriately
1700 case "$enable_cheaders" in
1702 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
1705 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1708 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1712 AC_SUBST(C_INCLUDE_DIR)
1713 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C, test "$enable_cheaders" = c)
1714 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C_STD, test "$enable_cheaders" = c_std)
1715 AM_CONDITIONAL(GLIBCPP_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes)
1720 dnl Check for wide character support. Has the same effect as the option
1721 dnl in gcc's configure, but in a form that autoconf can mess with.
1723 dnl GLIBCPP_ENABLE_C_MBCHAR
1724 dnl --enable-c-mbchar requests all the wchar_t stuff.
1725 dnl --disable-c-mbchar doesn't.
1726 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1727 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1728 dnl defaults to `no'.
1729 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1730 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1731 AC_ARG_ENABLE(c-mbchar,
1732 changequote(<<, >>)dnl
1733 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1734 changequote([, ])dnl
1735 [case "$enableval" in
1736 yes) enable_c_mbchar=yes ;;
1737 no) enable_c_mbchar=no ;;
1738 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1740 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1741 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1746 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1748 dnl TOPLEVEL_INCLUDES
1749 dnl LIBMATH_INCLUDES
1750 dnl LIBSUPCXX_INCLUDES
1752 dnl CSHADOW_INCLUDES
1754 dnl GLIBCPP_EXPORT_INCLUDES
1755 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1756 # Root level of the build directory include sources.
1757 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1759 # Passed down for canadian crosses.
1760 if test x"$CANADIAN" = xyes; then
1761 TOPLEVEL_INCLUDES='-I$(includedir)'
1764 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1766 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1768 if test x"$need_libio" = xyes; then
1769 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1770 AC_SUBST(LIBIO_INCLUDES)
1773 # Now, export this to all the little Makefiles....
1774 AC_SUBST(GLIBCPP_INCLUDES)
1775 AC_SUBST(TOPLEVEL_INCLUDES)
1776 AC_SUBST(LIBMATH_INCLUDES)
1777 AC_SUBST(LIBSUPCXX_INCLUDES)
1782 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1784 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1785 # Optimization flags that are probably a good idea for thrill-seekers. Just
1786 # uncomment the lines below and make, everything else is ready to go...
1787 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1789 AC_SUBST(OPTIMIZE_CXXFLAGS)
1791 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1792 AC_SUBST(WARN_FLAGS)
1796 dnl GLIBCPP_EXPORT_INSTALL_INFO
1797 dnl calculates gxx_install_dir
1798 dnl exports glibcpp_toolexecdir
1799 dnl exports glibcpp_toolexeclibdir
1800 dnl exports glibcpp_prefixdir
1802 dnl Assumes cross_compiling bits already done, and with_cross_host in
1805 dnl GLIBCPP_EXPORT_INSTALL_INFO
1806 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1807 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1808 # exported correctly in GLIBCPP_CONFIGURE.
1809 glibcpp_toolexecdir=no
1810 glibcpp_toolexeclibdir=no
1811 glibcpp_prefixdir=${prefix}
1813 # Process the option --with-gxx-include-dir=<path to include-files directory>
1814 AC_MSG_CHECKING([for --with-gxx-include-dir])
1815 AC_ARG_WITH(gxx-include-dir,
1816 [ --with-gxx-include-dir the installation directory for include files],
1817 [case "${withval}" in
1819 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1826 gxx_include_dir=${withval}
1828 esac], [gxx_include_dir=no])
1829 AC_MSG_RESULT($gxx_include_dir)
1831 # Process the option "--enable-version-specific-runtime-libs"
1832 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1833 AC_ARG_ENABLE(version-specific-runtime-libs,
1834 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1835 [case "$enableval" in
1836 yes) version_specific_libs=yes ;;
1837 no) version_specific_libs=no ;;
1838 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
1840 version_specific_libs=no)dnl
1841 # Option set, now we can test it.
1842 AC_MSG_RESULT($version_specific_libs)
1844 # Default case for install directory for include files.
1845 if test $version_specific_libs = no && test $gxx_include_dir = no; then
1846 gxx_include_dir='$(prefix)'/include/c++/${gcc_version}
1849 # Version-specific runtime libs processing.
1850 if test $version_specific_libs = yes; then
1851 # Need the gcc compiler version to know where to install libraries
1852 # and header files if --enable-version-specific-runtime-libs option
1854 if test x"$gxx_include_dir" = x"no"; then
1855 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++
1857 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1858 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1861 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1862 # Install a library built with a cross compiler in tooldir, not libdir.
1863 if test x"$glibcpp_toolexecdir" = x"no"; then
1864 if test -n "$with_cross_host" &&
1865 test x"$with_cross_host" != x"no"; then
1866 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1867 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1869 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1870 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1874 AC_MSG_CHECKING([for install location])
1875 AC_MSG_RESULT($gxx_include_dir)
1877 AC_SUBST(glibcpp_prefixdir)
1878 AC_SUBST(gxx_include_dir)
1879 AC_SUBST(glibcpp_toolexecdir)
1880 AC_SUBST(glibcpp_toolexeclibdir)
1884 # Check for functions in math library.
1885 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1887 # This file can be copied and used freely without restrictions. It can
1888 # be used in projects which are not available under the GNU Public License
1889 # but which still want to provide support for the GNU gettext functionality.
1890 # Please note that the actual code is *not* freely available.
1894 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1895 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1896 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
1899 dnl This macro searches for a GNU version of make. If a match is found, the
1900 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1901 dnl set to "#". This is useful for including a special features in a Makefile,
1902 dnl which cannot be handled by other versions of make. The variable
1903 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1904 dnl the empty string otherwise.
1906 dnl Here is an example of its use:
1908 dnl Makefile.in might contain:
1910 dnl # A failsafe way of putting a dependency rule into a makefile
1912 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1914 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1915 dnl @ifGNUmake@ include $(DEPEND)
1916 dnl @ifGNUmake@ endif
1918 dnl Then configure.in would normally contain:
1920 dnl CHECK_GNU_MAKE()
1921 dnl AC_OUTPUT(Makefile)
1923 dnl Then perhaps to cause gnu make to override any other make, we could do
1924 dnl something like this (note that GNU make always looks for GNUmakefile first):
1926 dnl if ! test x$_cv_gnu_make_command = x ; then
1927 dnl mv Makefile GNUmakefile
1928 dnl echo .DEFAULT: > Makefile ;
1929 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1932 dnl Then, if any (well almost any) other make is called, and GNU make also
1933 dnl exists, then the other make wraps the GNU make.
1935 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1936 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1938 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1939 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1940 dnl #### conditional's subshell (" --version" is not a command), using a
1941 dnl #### different option to grep(1).
1943 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1944 dnl #### ${MAKE:-make}).
1947 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1948 _cv_gnu_make_command='' ;
1949 dnl Search all the common names for GNU make
1950 for a in "${MAKE-make}" make gmake gnumake ; do
1951 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1953 _cv_gnu_make_command=$a ;
1958 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1959 dnl string, '#' otherwise
1960 if test "x$_cv_gnu_make_command" != "x" ; then
1969 dnl Check for headers for, and arguments to, the setrlimit() function.
1970 dnl Used only in testsuite_hooks.h.
1971 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
1972 AC_TRY_COMPILE([#include <unistd.h>
1973 #include <sys/time.h>
1974 #include <sys/resource.h>
1975 ], [ int f = RLIMIT_$1 ; ],
1976 [glibcpp_mresult=1], [glibcpp_mresult=0])
1977 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
1978 [Only used in build directory testsuite_hooks.h.])
1980 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
1981 setrlimit_have_headers=yes
1982 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
1984 setrlimit_have_headers=no)
1985 # If don't have the headers, then we can't run the tests now, and we
1986 # won't be seeing any of these during testsuite compilation.
1987 if test $setrlimit_have_headers = yes; then
1988 # Can't do these in a loop, else the resulting syntax is wrong.
1989 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
1990 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
1991 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
1992 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
1994 # Check for rlimit, setrlimit.
1995 AC_CACHE_VAL(ac_setrlimit, [
1996 AC_TRY_COMPILE([#include <unistd.h>
1997 #include <sys/time.h>
1998 #include <sys/resource.h>
2000 [ struct rlimit r; setrlimit(0, &r);],
2001 [ac_setrlimit=yes], [ac_setrlimit=no])
2005 AC_MSG_CHECKING([for testsuite memory limit support])
2006 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
2008 AC_DEFINE(_GLIBCPP_MEM_LIMITS)
2012 AC_MSG_RESULT($ac_mem_limits)
2017 dnl Does any necessary configuration of the testsuite directory. Generates
2018 dnl the testsuite_hooks.h header.
2020 dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
2021 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
2022 GLIBCPP_CHECK_SETRLIMIT
2024 # Look for setenv, so that extended locale tests can be performed.
2025 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
2027 # Export file names for ABI checking.
2028 baseline_file="${glibcpp_srcdir}/config/abi/${abi_baseline_triplet}/baseline_symbols.txt"
2029 AC_SUBST(baseline_file)
2031 # Don't do ABI checking unless native.
2032 AM_CONDITIONAL(GLIBCPP_BUILD_ABI_CHECK,
2033 test x"$build" = x"$host" && test -z "$with_cross_host")
2037 sinclude(../libtool.m4)
2038 dnl The lines below arrange for aclocal not to bring an installed
2039 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
2040 dnl add a definition of LIBTOOL to Makefile.in.
2041 ifelse(,,,[AC_SUBST(LIBTOOL)
2042 AC_DEFUN([AM_PROG_LIBTOOL])
2043 AC_DEFUN([AC_LIBTOOL_DLOPEN])
2044 AC_DEFUN([AC_PROG_LD])
2048 # Check whether LC_MESSAGES is available in <locale.h>.
2049 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2051 # This file file be copied and used freely without restrictions. It can
2052 # be used in projects which are not available under the GNU Public License
2053 # but which still want to provide support for the GNU gettext functionality.
2054 # Please note that the actual code is *not* freely available.
2058 AC_DEFUN(AC_LC_MESSAGES, [
2059 AC_CHECK_HEADER(locale.h, [
2060 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
2061 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2062 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
2063 if test $ac_cv_val_LC_MESSAGES = yes; then
2064 AC_DEFINE(HAVE_LC_MESSAGES)
2071 dnl Check for whether the Boost-derived checks should be turned on.
2073 dnl GLIBCPP_ENABLE_CONCEPT_CHECKS
2074 dnl --enable-concept-checks turns them on.
2075 dnl --disable-concept-checks leaves them off.
2076 dnl + Usage: GLIBCPP_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2077 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2078 dnl defaults to `no'.
2079 AC_DEFUN(GLIBCPP_ENABLE_CONCEPT_CHECKS, [dnl
2080 define([GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
2081 AC_ARG_ENABLE(concept-checks,
2082 changequote(<<, >>)dnl
2083 << --enable-concept-checks use Boost-derived template checks [default=>>GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT],
2084 changequote([, ])dnl
2085 [case "$enableval" in
2086 yes) enable_concept_checks=yes ;;
2087 no) enable_concept_checks=no ;;
2088 *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
2090 enable_concept_checks=GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
2091 dnl Option parsed, now set things appropriately
2092 if test x"$enable_concept_checks" = xyes; then
2093 AC_DEFINE(_GLIBCPP_CONCEPT_CHECKS)
2099 dnl Add version tags to symbols in shared library (or not), additionally
2100 dnl marking other symbols as private/local (or not).
2102 dnl GLIBCPP_ENABLE_SYMVERS
2103 dnl --enable-symvers=style adds a version script to the linker call when
2104 dnl creating the shared library. The choice of version script is
2105 dnl controlled by 'style'.
2106 dnl --disable-symvers does not.
2107 dnl + Usage: GLIBCPP_ENABLE_SYMVERS[(DEFAULT)]
2108 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2109 dnl defaults to `no'. Passing `yes' tries to choose a default style
2110 dnl based on linker characteristics. Passing 'no' disables versioning.
2111 AC_DEFUN(GLIBCPP_ENABLE_SYMVERS, [dnl
2112 define([GLIBCPP_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl
2113 AC_ARG_ENABLE(symvers,
2114 changequote(<<, >>)dnl
2115 << --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCPP_ENABLE_SYMVERS_DEFAULT],
2116 changequote([, ])dnl
2117 [case "$enableval" in
2118 yes) enable_symvers=yes ;;
2119 no) enable_symvers=no ;;
2120 # other names here, just as sanity checks
2121 #gnu|sun|etcetera) enable_symvers=$enableval ;;
2122 gnu) enable_symvers=$enableval ;;
2123 *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;;
2125 enable_symvers=GLIBCPP_ENABLE_SYMVERS_DEFAULT)dnl
2127 # If we never went through the GLIBCPP_CHECK_LINKER_FEATURES macro, then we
2128 # don't know enough about $LD to do tricks...
2129 if test x$enable_shared = xno ||
2131 test x$glibcpp_gnu_ld_version = x; then
2135 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
2136 if test $enable_symvers != no; then
2137 AC_MSG_CHECKING([for shared libgcc])
2138 ac_save_CFLAGS="$CFLAGS"
2140 AC_TRY_LINK(, [return 0], glibcpp_shared_libgcc=yes, glibcpp_shared_libgcc=no)
2141 CFLAGS="$ac_save_CFLAGS"
2142 AC_MSG_RESULT($glibcpp_shared_libgcc)
2145 # For GNU ld, we need at least this version. It's 2.12 in the same format
2146 # as the tested-for version. See GLIBCPP_CHECK_LINKER_FEATURES for more.
2147 glibcpp_min_gnu_ld_version=21200
2149 # Check to see if unspecified "yes" value can win, given results
2151 if test $enable_symvers = yes ; then
2152 if test $with_gnu_ld = yes &&
2153 test $glibcpp_shared_libgcc = yes ;
2155 if test $glibcpp_gnu_ld_version -ge $glibcpp_min_gnu_ld_version ; then
2158 ac_test_CFLAGS="${CFLAGS+set}"
2159 ac_save_CFLAGS="$CFLAGS"
2160 CFLAGS='-shared -Wl,--version-script,conftest.map'
2163 echo 'FOO { global: f[a-z]o; local: *; };' > conftest.map
2165 AC_TRY_LINK([int foo;],, enable_symvers=gnu)
2166 if test "$ac_test_CFLAGS" = set; then
2167 CFLAGS="$ac_save_CFLAGS"
2169 # this is the suspicious part
2180 dnl Everything parsed; figure out what file to use.
2181 case $enable_symvers in
2183 LINKER_MAP=config/linker-map.dummy
2186 LINKER_MAP=config/linker-map.gnu
2190 AC_LINK_FILES($LINKER_MAP, src/linker.map)
2191 AM_CONDITIONAL(GLIBCPP_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
2192 AC_MSG_CHECKING([versioning on shared library symbols])
2193 AC_MSG_RESULT($enable_symvers)