2 dnl Initialize configure bits.
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}/$toprel
36 AC_SUBST(toplevel_srcdir)
40 dnl Initialize configure bits.
43 AC_DEFUN(GLIBCPP_CONFIGURE, [
45 #possibly test for the presence of the compiler sources here?
47 # Export build and source directories.
48 # These need to be absolute paths, yet at the same time need to
49 # canonicalize only relative paths, because then amd will not unmount
50 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
51 glibcpp_builddir=`${PWDCMD-pwd}`
53 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
54 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
56 AC_SUBST(glibcpp_builddir)
57 AC_SUBST(glibcpp_srcdir)
59 dnl This is here just to satisfy automake.
60 ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
63 # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also
64 # be 'cp -p' if linking isn't available. Uncomment the next line to
65 # force a particular method.
66 #ac_cv_prog_LN_S='cp -p'
69 # We use these options to decide which functions to include.
70 AC_ARG_WITH(target-subdir,
71 [ --with-target-subdir=SUBDIR
72 configuring in a subdirectory])
73 AC_ARG_WITH(cross-host,
74 [ --with-cross-host=HOST configuring with a cross compiler])
76 glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
77 AC_SUBST(glibcpp_basedir)
79 # Never versions of autoconf add an underscore to these functions.
80 # Prevent future problems ...
81 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
82 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
83 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
84 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
87 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
88 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
89 # are probably using a cross compiler, which will not be able to fully
90 # link an executable. This is addressed in later versions of autoconf.
92 AC_DEFUN(LIB_AC_PROG_CC,
93 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
94 dnl Fool anybody using AC_PROG_CC.
95 AC_PROVIDE([AC_PROG_CC])
96 AC_CHECK_PROG(CC, gcc, gcc)
97 if test -z "$CC"; then
98 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
99 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
104 if test $ac_cv_prog_gcc = yes; then
106 dnl Check whether -g works, even if CFLAGS is set, in case the package
107 dnl plays around with CFLAGS (such as to build both debugging and
108 dnl normal versions of a library), tasteless as that idea is.
109 ac_test_CFLAGS="${CFLAGS+set}"
110 ac_save_CFLAGS="$CFLAGS"
113 if test "$ac_test_CFLAGS" = set; then
114 CFLAGS="$ac_save_CFLAGS"
115 elif test $ac_cv_prog_cc_g = yes; then
122 test "${CFLAGS+set}" = set || CFLAGS="-g"
128 # Likewise for AC_PROG_CXX. We can't just call it directly because g++
129 # will try to link in libstdc++.
130 AC_DEFUN(LIB_AC_PROG_CXX,
131 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
132 dnl Fool anybody using AC_PROG_CXX.
133 AC_PROVIDE([AC_PROG_CXX])
134 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
135 # flags that come in CXX while configuring libstdc++. They're different
136 # from those used for all other target libraries. If CXX is set in
137 # the environment, respect that here.
139 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
140 AC_SUBST(glibcpp_CXX)
142 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
146 if test $ac_cv_prog_gxx = yes; then
148 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
149 dnl plays around with CXXFLAGS (such as to build both debugging and
150 dnl normal versions of a library), tasteless as that idea is.
151 ac_test_CXXFLAGS="${CXXFLAGS+set}"
152 ac_save_CXXFLAGS="$CXXFLAGS"
155 if test "$ac_test_CXXFLAGS" = set; then
156 CXXFLAGS="$ac_save_CXXFLAGS"
157 elif test $ac_cv_prog_cxx_g = yes; then
164 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
170 # For some reason, gettext needs this.
173 AC_CHECK_TOOL(AS, as)
174 AC_CHECK_TOOL(AR, ar)
175 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
180 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
181 # at least currently, we never actually build a program, so we never
182 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
183 # fails, because we are probably configuring with a cross compiler
184 # which can't create executables. So we include AC_EXEEXT to keep
185 # automake happy, but we don't execute it, since we don't care about
188 # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
189 # to nothing, so nothing would remain between `then' and `fi' if it
190 # were not for the `:' below.
195 case [$]{glibcpp_basedir} in
196 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
197 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
200 # Find platform-specific directories containing configuration info. In
201 # addition to possibly modifying the same flags, it also sets up symlinks.
208 dnl Check to see if g++ can compile this library, and if so, if any version-
209 dnl specific precautions need to be taken.
211 dnl GLIBCPP_CHECK_COMPILER_VERSION
212 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
213 if test ! -f stamp-sanity-compiler; then
214 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
221 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
223 AC_MSG_RESULT($gpp_satisfactory)
224 touch stamp-sanity-compiler
230 dnl Tests for newer compiler features, or features that are present in newer
231 dnl compiler versions but not older compiler versions still in use, should
234 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
235 dnl new inlining code or the new system_header pragma will die on -Werror.
236 dnl Leave it out by default and use maint-mode to use it.
238 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
239 dnl compiler supports it and the user has not requested debug mode.
241 dnl GLIBCPP_CHECK_COMPILER_FEATURES
242 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
243 # All these tests are for C++; save the language and the compiler flags.
244 # The CXXFLAGS thing is suspicious, but based on similar bits previously
245 # found in GLIBCPP_CONFIGURE.
248 ac_test_CXXFLAGS="${CXXFLAGS+set}"
249 ac_save_CXXFLAGS="$CXXFLAGS"
251 # Check for maintainer-mode bits.
252 if test x"$USE_MAINTAINER_MODE" = xno; then
258 # Check for -ffunction-sections -fdata-sections
259 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
260 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
261 AC_TRY_COMPILE(, [int foo;
262 ], [ac_fdsections=yes], [ac_fdsections=no])
263 if test "$ac_test_CXXFLAGS" = set; then
264 CXXFLAGS="$ac_save_CXXFLAGS"
266 # this is the suspicious part
269 if test x"$ac_fdsections" = x"yes" &&
270 test x"$enable_debug" = x"no"; then
271 SECTION_FLAGS='-ffunction-sections -fdata-sections'
273 AC_MSG_RESULT($ac_fdsections)
277 AC_SUBST(SECTION_FLAGS)
282 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
283 dnl the native linker is in use, all variables will be defined to something
284 dnl safe (like an empty string).
286 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
287 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
288 dnl Define LD, with_gnu_ld, and (possibly) glibcpp_gnu_ld_version as
289 dnl side-effects of testing.
291 dnl GLIBCPP_CHECK_LINKER_FEATURES
292 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
293 # If we're not using GNU ld, then there's no point in even trying these
294 # tests. Check for that first. We should have already tested for gld
295 # by now (in libtool), but require it now just to be safe...
296 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
297 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
298 AC_REQUIRE([AC_PROG_LD])
300 # The name set by libtool depends on the version of libtool. Shame on us
301 # for depending on an impl detail, but c'est la vie. Older versions used
302 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
303 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
304 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
305 # set (hence we're using an older libtool), then set it.
306 if test x${with_gnu_ld+set} != xset; then
307 if test x${ac_cv_prog_gnu_ld+set} != xset; then
308 # We got through "ac_require(ac_prog_ld)" and still not set? Huh?
311 with_gnu_ld=$ac_cv_prog_gnu_ld
315 # Start by getting the version number. I think the libtool test already
316 # does some of this, but throws away the result.
318 ldver=`$LD --version 2>/dev/null | head -1 | \
319 sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
321 glibcpp_gnu_ld_version=`echo $ldver | \
322 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
325 if test "$with_gnu_ld" = "notbroken"; then
326 # GNU ld it is! Joy and bunny rabbits!
328 # All these tests are for C++; save the language and the compiler flags.
329 # Need to do this so that g++ won't try to link in libstdc++
330 ac_test_CFLAGS="${CFLAGS+set}"
331 ac_save_CFLAGS="$CFLAGS"
332 CFLAGS='-x c++ -Wl,--gc-sections'
334 # Check for -Wl,--gc-sections
335 # XXX This test is broken at the moment, as symbols required for
336 # linking are now in libsupc++ (not built yet.....). In addition,
337 # this test has cored on solaris in the past. In addition,
338 # --gc-sections doesn't really work at the moment (keeps on discarding
339 # used sections, first .eh_frame and now some of the glibc sections for
340 # iconv). Bzzzzt. Thanks for playing, maybe next time.
341 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
349 ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
350 if test "$ac_test_CFLAGS" = set; then
351 CFLAGS="$ac_save_CFLAGS"
353 # this is the suspicious part
356 if test "$ac_sectionLDflags" = "yes"; then
357 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
359 AC_MSG_RESULT($ac_sectionLDflags)
362 # Set linker optimization flags.
363 if test x"$with_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then
364 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
367 AC_SUBST(SECTION_LDFLAGS)
368 AC_SUBST(OPT_LDFLAGS)
373 dnl Check to see if the (math function) argument passed is
374 dnl declared when using the c++ compiler
375 dnl ASSUMES argument is a math function with ONE parameter
377 dnl GLIBCPP_CHECK_MATH_DECL_1
378 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
379 AC_MSG_CHECKING([for $1 declaration])
380 if test x${glibcpp_cv_func_$1_use+set} != xset; then
381 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
384 AC_TRY_COMPILE([#include <math.h>
390 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
394 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
398 dnl Check to see if the (math function) argument passed is
399 dnl 1) declared when using the c++ compiler
400 dnl 2) has "C" linkage
401 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
403 dnl Define HAVE_CARGF etc if "cargf" is declared and links
405 dnl argument 1 is name of function to check
407 dnl ASSUMES argument is a math function with ONE parameter
409 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
410 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
411 GLIBCPP_CHECK_MATH_DECL_1($1)
412 if test x$glibcpp_cv_func_$1_use = x"yes"; then
415 GLIBCPP_CHECK_MATH_DECL_1(_$1)
416 if test x$glibcpp_cv_func__$1_use = x"yes"; then
424 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
425 dnl of functions at once. It's an all-or-nothing check -- either
426 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
427 dnl Doing it this way saves significant configure time.
428 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
429 AC_MSG_CHECKING([for $1 functions])
430 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
433 AC_TRY_COMPILE([#include <math.h>],
434 [ `for x in $3; do echo "$x (0);"; done` ],
435 [glibcpp_cv_func_$2_use=yes],
436 [glibcpp_cv_func_$2_use=no])
438 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
439 if test x$glibcpp_cv_func_$2_use = x"yes"; then
445 dnl Check to see if the (math function) argument passed is
446 dnl declared when using the c++ compiler
447 dnl ASSUMES argument is a math function with TWO parameters
449 dnl GLIBCPP_CHECK_MATH_DECL_2
450 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
451 AC_MSG_CHECKING([for $1 declaration])
452 if test x${glibcpp_cv_func_$1_use+set} != xset; then
453 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
456 AC_TRY_COMPILE([#include <math.h>],
458 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
462 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
466 dnl Check to see if the (math function) argument passed is
467 dnl 1) declared when using the c++ compiler
468 dnl 2) has "C" linkage
470 dnl Define HAVE_CARGF etc if "cargf" is declared and links
472 dnl argument 1 is name of function to check
474 dnl ASSUMES argument is a math function with TWO parameters
476 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
477 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
478 GLIBCPP_CHECK_MATH_DECL_2($1)
479 if test x$glibcpp_cv_func_$1_use = x"yes"; then
482 GLIBCPP_CHECK_MATH_DECL_2(_$1)
483 if test x$glibcpp_cv_func__$1_use = x"yes"; then
491 dnl Check to see if the (math function) argument passed is
492 dnl declared when using the c++ compiler
493 dnl ASSUMES argument is a math function with THREE parameters
495 dnl GLIBCPP_CHECK_MATH_DECL_3
496 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
497 AC_MSG_CHECKING([for $1 declaration])
498 if test x${glibcpp_cv_func_$1_use+set} != xset; then
499 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
502 AC_TRY_COMPILE([#include <math.h>],
504 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
508 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
512 dnl Check to see if the (math function) argument passed is
513 dnl 1) declared when using the c++ compiler
514 dnl 2) has "C" linkage
516 dnl Define HAVE_CARGF etc if "cargf" is declared and links
518 dnl argument 1 is name of function to check
520 dnl ASSUMES argument is a math function with THREE parameters
522 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
523 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
524 GLIBCPP_CHECK_MATH_DECL_3($1)
525 if test x$glibcpp_cv_func_$1_use = x"yes"; then
528 GLIBCPP_CHECK_MATH_DECL_3(_$1)
529 if test x$glibcpp_cv_func__$1_use = x"yes"; then
537 dnl Check to see if the (stdlib function) argument passed is
538 dnl 1) declared when using the c++ compiler
539 dnl 2) has "C" linkage
541 dnl argument 1 is name of function to check
543 dnl ASSUMES argument is a math function with TWO parameters
545 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
546 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
547 AC_MSG_CHECKING([for $1 declaration])
548 if test x${glibcpp_cv_func_$1_use+set} != xset; then
549 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
552 AC_TRY_COMPILE([#include <stdlib.h>],
554 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
558 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
559 if test x$glibcpp_cv_func_$1_use = x"yes"; then
566 dnl Check to see if the (stdlib function) argument passed is
567 dnl 1) declared when using the c++ compiler
568 dnl 2) has "C" linkage
570 dnl argument 1 is name of function to check
572 dnl ASSUMES argument is a function with THREE parameters
574 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3
575 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3, [
576 AC_MSG_CHECKING([for $1 declaration])
577 if test x${glibcpp_cv_func_$1_use+set} != xset; then
578 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
581 AC_TRY_COMPILE([#include <stdlib.h>],
583 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
587 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
588 if test x$glibcpp_cv_func_$1_use = x"yes"; then
595 dnl Because the builtins are picky picky picky about the arguments they take,
596 dnl do an explict linkage tests here.
597 dnl Check to see if the (math function) argument passed is
598 dnl 1) declared when using the c++ compiler
599 dnl 2) has "C" linkage
601 dnl Define HAVE_CARGF etc if "cargf" is declared and links
603 dnl argument 1 is name of function to check
605 dnl ASSUMES argument is a math function with ONE parameter
607 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
608 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
609 AC_MSG_CHECKING([for $1 declaration])
610 if test x${glibcpp_cv_func_$1_use+set} != xset; then
611 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
614 AC_TRY_COMPILE([#include <math.h>],
616 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
620 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
621 if test x$glibcpp_cv_func_$1_use = x"yes"; then
622 AC_MSG_CHECKING([for $1 linkage])
623 if test x${glibcpp_cv_func_$1_link+set} != xset; then
624 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
625 AC_TRY_LINK([#include <math.h>],
627 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
630 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
631 if test x$glibcpp_cv_func_$1_link = x"yes"; then
632 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
633 AC_DEFINE_UNQUOTED(${ac_tr_func})
640 dnl Check to see what builtin math functions are supported
642 dnl check for __builtin_abs
643 dnl check for __builtin_fabsf
644 dnl check for __builtin_fabs
645 dnl check for __builtin_fabl
646 dnl check for __builtin_labs
647 dnl check for __builtin_sqrtf
648 dnl check for __builtin_sqrtl
649 dnl check for __builtin_sqrt
650 dnl check for __builtin_sinf
651 dnl check for __builtin_sin
652 dnl check for __builtin_sinl
653 dnl check for __builtin_cosf
654 dnl check for __builtin_cos
655 dnl check for __builtin_cosl
657 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
658 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
659 dnl Test for builtin math functions.
660 dnl These are made in gcc/c-common.c
661 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
662 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
663 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
664 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
665 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
667 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
668 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
669 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
671 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
672 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
673 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
675 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
676 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
677 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
679 dnl There is, without a doubt, a more elegant way to have these
680 dnl names exported so that they won't be stripped out of acconfig.h by
681 dnl autoheader. I leave this as an exercise to somebody less frustrated
682 dnl than I.... please email the libstdc++ list if you can figure out a
683 dnl more elegant approach (see autoconf/acgen.m4 and specifically
684 dnl AC_CHECK_FUNC for things to steal.)
686 if test x$dummyvar = x"yes"; then
687 AC_DEFINE(HAVE___BUILTIN_ABS)
688 AC_DEFINE(HAVE___BUILTIN_LABS)
689 AC_DEFINE(HAVE___BUILTIN_COS)
690 AC_DEFINE(HAVE___BUILTIN_COSF)
691 AC_DEFINE(HAVE___BUILTIN_COSL)
692 AC_DEFINE(HAVE___BUILTIN_FABS)
693 AC_DEFINE(HAVE___BUILTIN_FABSF)
694 AC_DEFINE(HAVE___BUILTIN_FABSL)
695 AC_DEFINE(HAVE___BUILTIN_SIN)
696 AC_DEFINE(HAVE___BUILTIN_SINF)
697 AC_DEFINE(HAVE___BUILTIN_SINL)
698 AC_DEFINE(HAVE___BUILTIN_SQRT)
699 AC_DEFINE(HAVE___BUILTIN_SQRTF)
700 AC_DEFINE(HAVE___BUILTIN_SQRTL)
706 dnl Check to see what the underlying c library
707 dnl These checks need to do two things:
708 dnl 1) make sure the name is declared when using the c++ compiler
709 dnl 2) make sure the name has "C" linkage
710 dnl This might seem like overkill but experience has shown that it's not...
712 dnl Define HAVE_STRTOLD if "strtold" is declared and links
713 dnl Define HAVE_STRTOF if "strtof" is declared and links
714 dnl Define HAVE_DRAND48 if "drand48" is declared and links
716 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
717 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
718 ac_test_CXXFLAGS="${CXXFLAGS+set}"
719 ac_save_CXXFLAGS="$CXXFLAGS"
720 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
722 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
723 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
724 AC_CHECK_FUNCS(drand48)
726 CXXFLAGS="$ac_save_CXXFLAGS"
731 dnl Check to see what the underlying c library or math library is like.
732 dnl These checks need to do two things:
733 dnl 1) make sure the name is declared when using the c++ compiler
734 dnl 2) make sure the name has "C" linkage
735 dnl This might seem like overkill but experience has shown that it's not...
737 dnl Define HAVE_CARGF etc if "cargf" is found.
739 dnl GLIBCPP_CHECK_MATH_SUPPORT
740 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
741 ac_test_CXXFLAGS="${CXXFLAGS+set}"
742 ac_save_CXXFLAGS="$CXXFLAGS"
743 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
746 AC_CHECK_LIB(m, sin, libm="-lm")
750 dnl Check to see if certain C math functions exist.
751 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
752 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
753 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
754 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
755 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
756 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
757 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
758 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
760 dnl Check to see if basic C math functions have float versions.
761 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
766 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
769 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
770 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
771 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
772 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
773 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
774 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
775 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
776 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
777 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
778 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
779 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
780 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
781 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
782 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
783 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
784 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
786 dnl Check to see if basic C math functions have long double versions.
787 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
792 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
795 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
796 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
797 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
798 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
799 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
800 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
801 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
802 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
803 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
804 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
805 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
806 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
807 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
808 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
809 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
810 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
811 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
813 dnl Some runtimes have these functions with a preceding underscore. Please
814 dnl keep this sync'd with the one above. And if you add any new symbol,
815 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
816 dnl Check to see if certain C math functions exist.
818 dnl Check to see if basic C math functions have float versions.
819 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
821 _acosf _asinf _atanf \
823 _coshf _sinhf _tanhf)
824 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
828 dnl Check to see if basic C math functions have long double versions.
829 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
831 _acosl _asinl _atanl \
833 _coshl _sinhl _tanhl)
834 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
839 CXXFLAGS="$ac_save_CXXFLAGS"
844 dnl Check to see if there is native support for complex
846 dnl Don't compile bits in math/* if native support exits.
848 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
850 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
851 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
852 dnl Check for complex versions of math functions of platform.
853 AC_CHECK_LIB(m, main)
854 AC_REPLACE_MATHFUNCS(nan copysignf)
856 dnl For __signbit to signbit conversions.
857 AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
858 AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
860 dnl Compile the long double complex functions only if the function
861 dnl provides the non-complex long double functions that are needed.
862 dnl Currently this includes copysignl, which should be
863 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
864 if test x$ac_cv_func_copysignl = x"yes"; then
865 AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
868 AC_SUBST(LIBMATHOBJS)
872 dnl Check to see what architecture and operating system we are compiling
873 dnl for. Also, if architecture- or OS-specific flags are required for
874 dnl compilation, pick them up here.
876 dnl GLIBCPP_CHECK_TARGET
877 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
878 . [$]{glibcpp_basedir}/configure.target
879 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
880 AC_MSG_RESULT(OS config directory is $os_include_dir)
885 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
886 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
887 dnl must have been previously checked.)
889 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
890 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
892 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
893 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
895 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
896 dnl others even if wchar_t support is not on.
897 AC_MSG_CHECKING([for mbstate_t])
898 AC_TRY_COMPILE([#include <wchar.h>],
899 [mbstate_t teststate;],
900 have_mbstate_t=yes, have_mbstate_t=no)
901 AC_MSG_RESULT($have_mbstate_t)
902 if test x"$have_mbstate_t" = xyes; then
903 AC_DEFINE(HAVE_MBSTATE_T)
906 dnl Sanity check for existence of ISO C99 headers for extended encoding.
907 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
908 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
910 dnl Only continue checking if the ISO C99 headers exist and support is on.
911 if test x"$ac_has_wchar_h" = xyes &&
912 test x"$ac_has_wctype_h" = xyes &&
913 test x"$enable_c_mbchar" != xno; then
915 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
916 dnl numeric_limits can instantiate type_traits<wchar_t>
917 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
918 AC_TRY_COMPILE([#include <wchar.h>],
919 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
920 has_wchar_minmax=yes, has_wchar_minmax=no)
921 AC_MSG_RESULT($has_wchar_minmax)
923 dnl Test wchar.h for WEOF, which is what we use to determine whether
924 dnl to specialize for char_traits<wchar_t> or not.
925 AC_MSG_CHECKING([for WEOF])
928 #include <stddef.h>],
930 has_weof=yes, has_weof=no)
931 AC_MSG_RESULT($has_weof)
933 dnl Tests for wide character functions used in char_traits<wchar_t>.
935 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
938 dnl Checks for names injected into std:: by the c_std headers.
939 AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
940 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
941 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
942 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
943 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
944 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
947 AC_MSG_CHECKING([for ISO C99 wchar_t support])
948 if test x"$has_weof" = xyes &&
949 test x"$has_wchar_minmax" = xyes &&
950 test x"$ac_wfuncs" = xyes; then
951 ac_isoC99_wchar_t=yes
955 AC_MSG_RESULT($ac_isoC99_wchar_t)
957 dnl Use iconv for wchar_t to char conversions. As such, check for
958 dnl X/Open Portability Guide, version 2 features (XPG2).
959 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
960 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
962 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
963 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
965 LIBS="$LIBS $libiconv"
967 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
968 ac_XPG2funcs=yes, ac_XPG2funcs=no)
972 AC_MSG_CHECKING([for XPG2 wchar_t support])
973 if test x"$ac_has_iconv_h" = xyes &&
974 test x"$ac_has_langinfo_h" = xyes &&
975 test x"$ac_XPG2funcs" = xyes; then
980 AC_MSG_RESULT($ac_XPG2_wchar_t)
982 dnl At the moment, only enable wchar_t specializations if all the
983 dnl above support is present.
984 AC_MSG_CHECKING([for enabled wchar_t specializations])
985 if test x"$ac_isoC99_wchar_t" = xyes &&
986 test x"$ac_XPG2_wchar_t" = xyes; then
987 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
993 dnl Wide characters disabled by the user.
994 AC_MSG_WARN([wchar_t support disabled.])
1000 dnl Check for special debugging mode; not for production use.
1002 dnl GLIBCPP_ENABLE_DEBUG
1003 dnl --enable-debug sets '-ggdb3 -O0'.
1004 dnl --disable-debug sets '-g' and whatever optimization options the
1005 dnl compiler can handle.
1006 dnl + --enable-maintainer-mode automatically defaults this to on.
1007 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1008 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1009 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1010 dnl defaults to `no'.
1011 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1012 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1013 AC_ARG_ENABLE(debug,
1014 changequote(<<, >>)dnl
1015 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1016 changequote([, ])dnl
1017 [case "${enableval}" in
1018 yes) enable_debug=yes ;;
1019 no) enable_debug=no ;;
1020 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1022 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1024 dnl Option parsed, now set things appropriately
1025 case "${enable_debug}" in
1027 DEBUG_FLAGS='-O0 -ggdb3'
1033 AC_SUBST(DEBUG_FLAGS)
1038 dnl Check for "unusual" flags to pass to the compiler while building.
1040 dnl GLIBCPP_ENABLE_CXX_FLAGS
1041 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1042 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1043 dnl Somehow this same set of flags must be passed when [re]building
1045 dnl --disable-cxx-flags passes nothing.
1046 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1047 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1048 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1049 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1050 dnl If "default flags" is an empty string (or "none"), the effect is
1051 dnl the same as --disable or --enable=no.
1052 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1053 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1054 AC_ARG_ENABLE(cxx-flags,
1055 changequote(<<, >>)dnl
1056 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1057 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1058 changequote([, ])dnl
1059 [case "x$enableval" in
1061 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1063 enable_cxx_flags='' ;;
1065 enable_cxx_flags="$enableval" ;;
1067 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1069 dnl Thinko on my part during design. This kludge is the workaround.
1070 if test "$enable_cxx_flags" = "none"; then
1071 enable_cxx_flags='';
1074 dnl Run through flags (either default or command-line) and set anything
1075 dnl extra (e.g., #defines) that must accompany particular g++ options.
1076 if test -n "$enable_cxx_flags"; then
1077 for f in $enable_cxx_flags; do
1081 *) # and we're trying to pass /what/ exactly?
1082 AC_MSG_ERROR([compiler flags start with a -]) ;;
1086 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1087 AC_SUBST(EXTRA_CXX_FLAGS)
1092 dnl Check for which locale library to use: gnu or generic.
1094 dnl GLIBCPP_ENABLE_CLOCALE
1095 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1096 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1098 dnl default is generic
1100 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1101 AC_MSG_CHECKING([for clocale to use])
1102 AC_ARG_ENABLE(clocale,
1103 [ --enable-clocale enable model for target locale package.
1104 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1106 if test x$enable_clocale = xno; then
1111 enable_clocale_flag=$enable_clocale
1113 dnl Probe for locale support if no specific model is specified.
1114 dnl Default to "generic"
1115 if test x$enable_clocale_flag = xno; then
1116 case x${target_os} in
1118 AC_EGREP_CPP([_GLIBCPP_ok], [
1119 #include <features.h>
1120 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1123 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1125 # Test for bugs early in glibc-2.2.x series
1126 if test x$enable_clocale_flag = xgnu; then
1128 #define _GNU_SOURCE 1
1132 const char __one[] = "Äuglein Augmen";
1133 const char __two[] = "Äuglein";
1138 loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1139 loc_dup = __duplocale(loc);
1140 i = __strcoll_l(__one, __two, loc);
1141 j = __strcoll_l(__one, __two, loc_dup);
1145 [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1146 [enable_clocale_flag=generic])
1149 # ... at some point put __strxfrm_l tests in as well.
1152 enable_clocale_flag=generic
1157 dnl Deal with gettext issues.
1159 [ --enable-nls use Native Language Support (default)],
1163 dnl Set configure bits for specified locale package
1164 case x${enable_clocale_flag} in
1166 AC_MSG_RESULT(generic)
1168 CLOCALE_H=config/locale/generic/c_locale.h
1169 CLOCALE_CC=config/locale/generic/c_locale.cc
1170 CCODECVT_H=config/locale/generic/codecvt_specializations.h
1171 CCOLLATE_CC=config/locale/generic/collate_members.cc
1172 CCTYPE_CC=config/locale/generic/ctype_members.cc
1173 CMESSAGES_H=config/locale/generic/messages_members.h
1174 CMESSAGES_CC=config/locale/generic/messages_members.cc
1175 CMONEY_CC=config/locale/generic/monetary_members.cc
1176 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1177 CTIME_CC=config/locale/generic/time_members.cc
1182 # Declare intention to use gettext, and add support for specific
1184 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1187 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1188 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1189 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1192 # Export the build objects.
1193 for ling in $ALL_LINGUAS; do \
1194 glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1195 glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1197 AC_SUBST(glibcpp_MOFILES)
1198 AC_SUBST(glibcpp_POFILES)
1200 CLOCALE_H=config/locale/gnu/c_locale.h
1201 CLOCALE_CC=config/locale/gnu/c_locale.cc
1202 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1203 CCOLLATE_CC=config/locale/gnu/collate_members.cc
1204 CCTYPE_CC=config/locale/gnu/ctype_members.cc
1205 CMESSAGES_H=config/locale/gnu/messages_members.h
1206 CMESSAGES_CC=config/locale/gnu/messages_members.cc
1207 CMONEY_CC=config/locale/gnu/monetary_members.cc
1208 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1209 CTIME_CC=config/locale/gnu/time_members.cc
1212 AC_MSG_RESULT(generic)
1214 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1215 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1216 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1217 CCOLLATE_CC=config/locale/generic/collate_members.cc
1218 CCTYPE_CC=config/locale/generic/ctype_members.cc
1219 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1220 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1221 CMONEY_CC=config/locale/generic/monetary_members.cc
1222 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1223 CTIME_CC=config/locale/generic/time_members.cc
1226 echo "$enable_clocale is an unknown locale package" 1>&2
1231 # This is where the testsuite looks for locale catalogs, using the
1232 # -DLOCALEDIR define during testsuite compilation.
1233 glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1234 AC_SUBST(glibcpp_localedir)
1238 AC_SUBST(CCODECVT_H)
1239 AC_SUBST(CMESSAGES_H)
1240 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1241 AC_LINK_FILES($CCOLLATE_CC, src/collate.cc)
1242 AC_LINK_FILES($CCTYPE_CC, src/ctype.cc)
1243 AC_LINK_FILES($CMESSAGES_CC, src/messages.cc)
1244 AC_LINK_FILES($CMONEY_CC, src/monetary.cc)
1245 AC_LINK_FILES($CNUMERIC_CC, src/numeric.cc)
1246 AC_LINK_FILES($CTIME_CC, src/time.cc)
1251 dnl Check for which I/O library to use: libio, or something specific.
1253 dnl GLIBCPP_ENABLE_CSTDIO
1254 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1256 dnl default is stdio
1258 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1259 AC_MSG_CHECKING([for cstdio to use])
1260 AC_ARG_ENABLE(cstdio,
1261 [ --enable-cstdio enable stdio for target io package.
1262 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1264 if test x$enable_cstdio = xno; then
1267 enable_cstdio=stdio)
1269 enable_cstdio_flag=$enable_cstdio
1271 dnl Check if a valid I/O package
1272 case x${enable_cstdio_flag} in
1274 CSTDIO_H=config/io/c_io_libio.h
1275 BASIC_FILE_H=config/io/basic_file_libio.h
1276 BASIC_FILE_CC=config/io/basic_file_libio.cc
1277 AC_MSG_RESULT(libio)
1279 # see if we are on a system with libio native (ie, linux)
1280 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1282 # Need to check and see what version of glibc is being used. If
1283 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1284 # compile most of libio for linux systems.
1285 if test x$has_libio = x"yes"; then
1288 AC_MSG_CHECKING([for glibc version >= 2.2])
1289 AC_EGREP_CPP([ok], [
1290 #include <features.h>
1291 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1294 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1295 AC_MSG_RESULT($glibc_satisfactory)
1299 # XXX at the moment, admit defeat and force the recompilation
1300 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1301 glibc_satisfactory=no
1303 if test x$glibc_satisfactory = x"yes"; then
1308 # bkoz XXX need to add checks to enable this
1309 # pme XXX here's a first pass at such a check
1310 if test x$enable_c_mbchar != xno; then
1318 # Using libio, but <libio.h> doesn't exist on the target system. . .
1320 # bkoz XXX need to add checks to enable this
1321 # pme XXX here's a first pass at such a check
1322 if test x$enable_c_mbchar != xno; then
1329 xstdio | x | xno | xnone | xyes)
1331 CSTDIO_H=config/io/c_io_stdio.h
1332 BASIC_FILE_H=config/io/basic_file_stdio.h
1333 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1334 AC_MSG_RESULT(stdio)
1336 # We're not using stdio.
1341 echo "$enable_cstdio is an unknown io package" 1>&2
1346 AC_SUBST(BASIC_FILE_H)
1347 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1349 # 2000-08-04 bkoz hack
1350 CCODECVT_C=config/io/c_io_libio_codecvt.c
1351 AC_SUBST(CCODECVT_C)
1352 # 2000-08-04 bkoz hack
1354 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1355 test "$need_libio" = yes || test "$need_wlibio" = yes)
1356 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1357 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1358 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1359 libio_la=../libio/libio.la
1368 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1369 dnl We must stage the required headers so that they will be installed
1370 dnl with the library (unlike libgcc, the STL implementation is provided
1371 dnl solely within headers). Since we must not inject random user-space
1372 dnl macro names into user-provided C++ code, we first stage into <file>-in
1373 dnl and process to <file> with an output command. The reason for a two-
1374 dnl stage process here is to correctly handle $srcdir!=$objdir without
1375 dnl having to write complex code (the sed commands to clean the macro
1376 dnl namespace are complex and fragile enough as it is). We must also
1377 dnl add a relative path so that -I- is supported properly.
1379 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1380 AC_MSG_CHECKING([for thread model used by GCC])
1381 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1382 AC_MSG_RESULT([$target_thread_file])
1384 if test $target_thread_file != single; then
1385 AC_DEFINE(HAVE_GTHR_DEFAULT)
1386 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1389 glibcpp_thread_h=gthr-$target_thread_file.h
1390 AC_SUBST(glibcpp_thread_h)
1395 dnl Check for exception handling support. If an explicit enable/disable
1396 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1397 dnl target may or may not support call frame exceptions.
1399 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1400 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1401 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1403 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1405 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1406 AC_MSG_CHECKING([for exception model to use])
1409 AC_ARG_ENABLE(sjlj-exceptions,
1410 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1412 [dnl Botheration. Now we've got to detect the exception model.
1413 dnl Link tests against libgcc.a are problematic since -- at least
1414 dnl as of this writing -- we've not been given proper -L bits for
1415 dnl single-tree newlib and libgloss.
1417 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1418 dnl conftest files before we got a change to grep them first.
1419 cat > conftest.$ac_ext << EOF
1420 [#]line __oline__ "configure"
1429 old_CXXFLAGS="$CXXFLAGS"
1431 if AC_TRY_EVAL(ac_compile); then
1432 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1433 enable_sjlj_exceptions=yes
1434 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1435 enable_sjlj_exceptions=no
1438 CXXFLAGS="$old_CXXFLAGS"
1440 if test x$enable_sjlj_exceptions = xyes; then
1441 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1442 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1443 ac_exception_model_name=sjlj
1444 elif test x$enable_sjlj_exceptions = xno; then
1445 ac_exception_model_name="call frame"
1447 AC_MSG_ERROR([unable to detect exception model])
1450 AC_MSG_RESULT($ac_exception_model_name)
1455 dnl Check for libunwind exception handling support. If enabled then
1456 dnl we assume that the _Unwind_* functions that make up the Unwind ABI
1457 dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by
1458 dnl libunwind instead of libgcc and that libstdc++ has a dependency
1459 dnl on libunwind as well as libgcc.
1461 dnl GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
1462 dnl --enable-libunwind-exceptions forces the use of libunwind.
1463 dnl --disable-libunwind-exceptions assumes there is no libunwind.
1465 dnl Define _GLIBCPP_LIBUNWIND_EXCEPTIONS if requested.
1467 AC_DEFUN(GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS, [
1468 AC_MSG_CHECKING([for use of libunwind])
1469 AC_ARG_ENABLE(libunwind-exceptions,
1470 [ --enable-libunwind-exceptions force use of libunwind for exceptions],
1471 use_libunwind_exceptions=$enableval,
1472 use_libunwind_exceptions=no)
1473 AC_MSG_RESULT($use_libunwind_exceptions)
1474 dnl Option parsed, now set things appropriately
1475 if test x"$use_libunwind_exceptions" = xyes; then
1476 LIBUNWIND_FLAG="-lunwind"
1480 AC_SUBST(LIBUNWIND_FLAG)
1484 dnl Check for ISO/IEC 9899:1999 "C99" support.
1486 dnl GLIBCPP_ENABLE_C99
1487 dnl --enable-c99 defines _GLIBCPP_USE_C99
1488 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1489 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1490 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1491 dnl defaults to `no'.
1492 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1494 dnl GLIBCPP_ENABLE_C99
1495 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1496 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1499 changequote(<<, >>)dnl
1500 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1501 changequote([, ])dnl
1502 [case "$enableval" in
1503 yes) enable_c99=yes ;;
1504 no) enable_c99=no ;;
1505 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1507 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1512 # Check for the existence of <math.h> functions used if C99 is enabled.
1514 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1515 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1516 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1517 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1518 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1519 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1520 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1521 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1522 AC_TRY_COMPILE([#include <math.h>],
1523 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1524 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1525 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1526 AC_TRY_COMPILE([#include <math.h>],
1527 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1528 AC_TRY_COMPILE([#include <math.h>],
1529 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1530 AC_MSG_RESULT($ac_c99_math)
1532 # Check for the existence in <stdio.h> of vscanf, et. al.
1534 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1535 AC_TRY_COMPILE([#include <stdio.h>],
1536 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1537 AC_TRY_COMPILE([#include <stdio.h>
1539 void foo(char* fmt, ...)
1540 {va_list args; va_start(args, fmt);
1541 vfscanf(stderr, "%i", args);}],
1542 [],, [ac_c99_stdio=no])
1543 AC_TRY_COMPILE([#include <stdio.h>
1545 void foo(char* fmt, ...)
1546 {va_list args; va_start(args, fmt);
1547 vscanf("%i", args);}],
1548 [],, [ac_c99_stdio=no])
1549 AC_TRY_COMPILE([#include <stdio.h>
1551 void foo(char* fmt, ...)
1552 {va_list args; va_start(args, fmt);
1553 vsnprintf(fmt, 0, "%i", args);}],
1554 [],, [ac_c99_stdio=no])
1555 AC_TRY_COMPILE([#include <stdio.h>
1557 void foo(char* fmt, ...)
1558 {va_list args; va_start(args, fmt);
1559 vsscanf(fmt, "%i", args);}],
1560 [],, [ac_c99_stdio=no])
1561 AC_MSG_RESULT($ac_c99_stdio)
1563 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1565 AC_MSG_CHECKING([for lldiv_t declaration])
1566 AC_CACHE_VAL(ac_c99_lldiv_t, [
1567 AC_TRY_COMPILE([#include <stdlib.h>],
1569 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1571 AC_MSG_RESULT($ac_c99_lldiv_t)
1573 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1574 AC_TRY_COMPILE([#include <stdlib.h>],
1575 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1576 AC_TRY_COMPILE([#include <stdlib.h>],
1577 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1578 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1579 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1580 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1581 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1582 if test x"$ac_c99_lldiv_t" = x"no"; then
1585 AC_MSG_RESULT($ac_c99_stdlib)
1587 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1588 # XXX the wchar.h checks should be rolled into the general C99 bits.
1590 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1591 AC_TRY_COMPILE([#include <wchar.h>],
1592 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1593 AC_TRY_COMPILE([#include <wchar.h>],
1594 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1595 AC_TRY_COMPILE([#include <wchar.h>],
1596 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1597 AC_MSG_RESULT($ac_c99_wchar)
1599 AC_MSG_CHECKING([for enabled ISO C99 support])
1600 if test x"$ac_c99_math" = x"no" ||
1601 test x"$ac_c99_stdio" = x"no" ||
1602 test x"$ac_c99_stdlib" = x"no" ||
1603 test x"$ac_c99_wchar" = x"no"; then
1606 AC_MSG_RESULT($enable_c99)
1608 # Option parsed, now set things appropriately
1609 if test x"$enable_c99" = x"yes"; then
1610 AC_DEFINE(_GLIBCPP_USE_C99)
1618 dnl Check for template specializations for the 'long long' type extension.
1619 dnl The result determines only whether 'long long' I/O is enabled; things
1620 dnl like numeric_limits<> specializations are always available.
1622 dnl GLIBCPP_ENABLE_LONG_LONG
1623 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1624 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1625 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1626 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1627 dnl defaults to `no'.
1628 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1630 dnl GLIBCPP_ENABLE_LONG_LONG
1631 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1632 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1634 AC_ARG_ENABLE(long-long,
1635 changequote(<<, >>)dnl
1636 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1637 changequote([, ])dnl
1638 [case "$enableval" in
1639 yes) enable_long_long=yes ;;
1640 no) enable_long_long=no ;;
1641 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1643 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1648 AC_MSG_CHECKING([for enabled long long I/O support])
1649 # iostreams require strtoll, strtoull to compile
1650 AC_TRY_COMPILE([#include <stdlib.h>],
1651 [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1652 AC_TRY_COMPILE([#include <stdlib.h>],
1653 [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1655 # Option parsed, now set things appropriately
1656 if test x"$enable_long_long" = xyes; then
1657 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1659 AC_MSG_RESULT($enable_long_long)
1666 dnl Check for what kind of C headers to use.
1668 dnl GLIBCPP_ENABLE_CHEADERS
1669 dnl --enable-cheaders= [does stuff].
1670 dnl --disable-cheaders [does not do anything, really].
1671 dnl + This will eventually need to be 'c_shadow' by default.
1672 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1673 dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
1674 dnl If ommitted, it defaults to `c_std'.
1675 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1676 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1677 AC_MSG_CHECKING([for c header strategy to use])
1678 AC_ARG_ENABLE(cheaders,
1679 changequote(<<, >>)dnl
1680 << --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1682 [case "$enableval" in
1687 enable_cheaders=c_std
1690 enable_cheaders=c_shadow
1692 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1695 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1696 AC_MSG_RESULT($enable_cheaders)
1698 dnl Option parsed, now set things appropriately
1699 case "$enable_cheaders" in
1701 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
1704 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1707 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1711 AC_SUBST(C_INCLUDE_DIR)
1712 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C, test "$enable_cheaders" = c)
1713 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C_STD, test "$enable_cheaders" = c_std)
1714 AM_CONDITIONAL(GLIBCPP_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes)
1719 dnl Check for wide character support. Has the same effect as the option
1720 dnl in gcc's configure, but in a form that autoconf can mess with.
1722 dnl GLIBCPP_ENABLE_C_MBCHAR
1723 dnl --enable-c-mbchar requests all the wchar_t stuff.
1724 dnl --disable-c-mbchar doesn't.
1725 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1726 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1727 dnl defaults to `no'.
1728 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1729 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1730 AC_ARG_ENABLE(c-mbchar,
1731 changequote(<<, >>)dnl
1732 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1733 changequote([, ])dnl
1734 [case "$enableval" in
1735 yes) enable_c_mbchar=yes ;;
1736 no) enable_c_mbchar=no ;;
1737 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1739 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1740 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1745 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1747 dnl TOPLEVEL_INCLUDES
1748 dnl LIBMATH_INCLUDES
1749 dnl LIBSUPCXX_INCLUDES
1751 dnl CSHADOW_INCLUDES
1753 dnl GLIBCPP_EXPORT_INCLUDES
1754 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1755 # Root level of the build directory include sources.
1756 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1758 # Passed down for canadian crosses.
1759 if test x"$CANADIAN" = xyes; then
1760 TOPLEVEL_INCLUDES='-I$(includedir)'
1763 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1765 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1767 if test x"$need_libio" = xyes; then
1768 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1769 AC_SUBST(LIBIO_INCLUDES)
1772 # Now, export this to all the little Makefiles....
1773 AC_SUBST(GLIBCPP_INCLUDES)
1774 AC_SUBST(TOPLEVEL_INCLUDES)
1775 AC_SUBST(LIBMATH_INCLUDES)
1776 AC_SUBST(LIBSUPCXX_INCLUDES)
1781 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1783 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1784 # Optimization flags that are probably a good idea for thrill-seekers. Just
1785 # uncomment the lines below and make, everything else is ready to go...
1786 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1788 AC_SUBST(OPTIMIZE_CXXFLAGS)
1790 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1791 AC_SUBST(WARN_FLAGS)
1795 dnl GLIBCPP_EXPORT_INSTALL_INFO
1796 dnl calculates gxx_install_dir
1797 dnl exports glibcpp_toolexecdir
1798 dnl exports glibcpp_toolexeclibdir
1799 dnl exports glibcpp_prefixdir
1801 dnl Assumes cross_compiling bits already done, and with_cross_host in
1804 dnl GLIBCPP_EXPORT_INSTALL_INFO
1805 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1806 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1807 # exported correctly in GLIBCPP_CONFIGURE.
1808 glibcpp_toolexecdir=no
1809 glibcpp_toolexeclibdir=no
1810 glibcpp_prefixdir=${prefix}
1812 # Process the option --with-gxx-include-dir=<path to include-files directory>
1813 AC_MSG_CHECKING([for --with-gxx-include-dir])
1814 AC_ARG_WITH(gxx-include-dir,
1815 [ --with-gxx-include-dir the installation directory for include files],
1816 [case "${withval}" in
1818 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1825 gxx_include_dir=${withval}
1827 esac], [gxx_include_dir=no])
1828 AC_MSG_RESULT($gxx_include_dir)
1830 # Process the option "--enable-version-specific-runtime-libs"
1831 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1832 AC_ARG_ENABLE(version-specific-runtime-libs,
1833 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1834 [case "$enableval" in
1835 yes) version_specific_libs=yes ;;
1836 no) version_specific_libs=no ;;
1837 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
1839 version_specific_libs=no)dnl
1840 # Option set, now we can test it.
1841 AC_MSG_RESULT($version_specific_libs)
1843 # Get the gcc version number. This is lifted from gcc/configure.in
1844 AC_MSG_CHECKING([for gcc version number])
1846 gcc_version_trigger=${srcdir}/../gcc/version.c
1847 gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([^\"]*\)\".*/\1/'`
1848 gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
1850 AC_MSG_RESULT($gcc_version)
1852 # Default case for install directory for include files.
1853 if test $version_specific_libs = no && test $gxx_include_dir = no; then
1854 gxx_include_dir='$(prefix)'/include/c++/${gcc_version}
1857 # Version-specific runtime libs processing.
1858 if test $version_specific_libs = yes; then
1859 # Need the gcc compiler version to know where to install libraries
1860 # and header files if --enable-version-specific-runtime-libs option
1862 if test x"$gxx_include_dir" = x"no"; then
1863 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++
1865 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1866 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1869 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1870 # Install a library built with a cross compiler in tooldir, not libdir.
1871 if test x"$glibcpp_toolexecdir" = x"no"; then
1872 if test -n "$with_cross_host" &&
1873 test x"$with_cross_host" != x"no"; then
1874 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1875 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1877 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1878 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1882 AC_MSG_CHECKING([for install location])
1883 AC_MSG_RESULT($gxx_include_dir)
1885 AC_SUBST(glibcpp_prefixdir)
1886 AC_SUBST(gxx_include_dir)
1887 AC_SUBST(glibcpp_toolexecdir)
1888 AC_SUBST(glibcpp_toolexeclibdir)
1892 # Check for functions in math library.
1893 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1895 # This file can be copied and used freely without restrictions. It can
1896 # be used in projects which are not available under the GNU Public License
1897 # but which still want to provide support for the GNU gettext functionality.
1898 # Please note that the actual code is *not* freely available.
1902 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1903 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1904 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
1907 dnl This macro searches for a GNU version of make. If a match is found, the
1908 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1909 dnl set to "#". This is useful for including a special features in a Makefile,
1910 dnl which cannot be handled by other versions of make. The variable
1911 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1912 dnl the empty string otherwise.
1914 dnl Here is an example of its use:
1916 dnl Makefile.in might contain:
1918 dnl # A failsafe way of putting a dependency rule into a makefile
1920 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1922 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1923 dnl @ifGNUmake@ include $(DEPEND)
1924 dnl @ifGNUmake@ endif
1926 dnl Then configure.in would normally contain:
1928 dnl CHECK_GNU_MAKE()
1929 dnl AC_OUTPUT(Makefile)
1931 dnl Then perhaps to cause gnu make to override any other make, we could do
1932 dnl something like this (note that GNU make always looks for GNUmakefile first):
1934 dnl if ! test x$_cv_gnu_make_command = x ; then
1935 dnl mv Makefile GNUmakefile
1936 dnl echo .DEFAULT: > Makefile ;
1937 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1940 dnl Then, if any (well almost any) other make is called, and GNU make also
1941 dnl exists, then the other make wraps the GNU make.
1943 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1944 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1946 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1947 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1948 dnl #### conditional's subshell (" --version" is not a command), using a
1949 dnl #### different option to grep(1).
1951 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1952 dnl #### ${MAKE:-make}).
1955 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
1956 _cv_gnu_make_command='' ;
1957 dnl Search all the common names for GNU make
1958 for a in "${MAKE-make}" make gmake gnumake ; do
1959 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
1961 _cv_gnu_make_command=$a ;
1966 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
1967 dnl string, '#' otherwise
1968 if test "x$_cv_gnu_make_command" != "x" ; then
1977 dnl Check for headers for, and arguments to, the setrlimit() function.
1978 dnl Used only in testsuite_hooks.h.
1979 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
1980 AC_TRY_COMPILE([#include <unistd.h>
1981 #include <sys/time.h>
1982 #include <sys/resource.h>
1983 ], [ int f = RLIMIT_$1 ; ],
1984 [glibcpp_mresult=1], [glibcpp_mresult=0])
1985 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
1986 [Only used in build directory testsuite_hooks.h.])
1988 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
1989 setrlimit_have_headers=yes
1990 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
1992 setrlimit_have_headers=no)
1993 # If don't have the headers, then we can't run the tests now, and we
1994 # won't be seeing any of these during testsuite compilation.
1995 if test $setrlimit_have_headers = yes; then
1996 # Can't do these in a loop, else the resulting syntax is wrong.
1997 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
1998 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
1999 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
2000 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
2002 # Check for rlimit, setrlimit.
2003 AC_CACHE_VAL(ac_setrlimit, [
2004 AC_TRY_COMPILE([#include <unistd.h>
2005 #include <sys/time.h>
2006 #include <sys/resource.h>
2008 [ struct rlimit r; setrlimit(0, &r);],
2009 [ac_setrlimit=yes], [ac_setrlimit=no])
2013 AC_MSG_CHECKING([for testsuite memory limit support])
2014 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
2016 AC_DEFINE(_GLIBCPP_MEM_LIMITS)
2020 AC_MSG_RESULT($ac_mem_limits)
2025 dnl Does any necessary configuration of the testsuite directory. Generates
2026 dnl the testsuite_hooks.h header.
2028 dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
2029 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
2030 GLIBCPP_CHECK_SETRLIMIT
2032 # Look for setenv, so that extended locale tests can be performed.
2033 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
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)