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"; 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"; 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
594 dnl Check to see if the (unistd function) argument passed is
595 dnl 1) declared when using the c++ compiler
596 dnl 2) has "C" linkage
598 dnl argument 1 is name of function to check
600 dnl ASSUMES argument is a function with ONE parameter
602 dnl GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1
603 AC_DEFUN(GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1, [
604 AC_MSG_CHECKING([for $1 declaration])
605 if test x${glibcpp_cv_func_$1_use+set} != xset; then
606 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
609 AC_TRY_COMPILE([#include <unistd.h>],
611 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
615 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
616 if test x$glibcpp_cv_func_$1_use = x"yes"; then
622 dnl Because the builtins are picky picky picky about the arguments they take,
623 dnl do an explict linkage tests here.
624 dnl Check to see if the (math function) argument passed is
625 dnl 1) declared when using the c++ compiler
626 dnl 2) has "C" linkage
628 dnl Define HAVE_CARGF etc if "cargf" is declared and links
630 dnl argument 1 is name of function to check
632 dnl ASSUMES argument is a math function with ONE parameter
634 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
635 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
636 AC_MSG_CHECKING([for $1 declaration])
637 if test x${glibcpp_cv_func_$1_use+set} != xset; then
638 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
641 AC_TRY_COMPILE([#include <math.h>],
643 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
647 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
648 if test x$glibcpp_cv_func_$1_use = x"yes"; then
649 AC_MSG_CHECKING([for $1 linkage])
650 if test x${glibcpp_cv_func_$1_link+set} != xset; then
651 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
652 AC_TRY_LINK([#include <math.h>],
654 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
657 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
658 if test x$glibcpp_cv_func_$1_link = x"yes"; then
659 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
660 AC_DEFINE_UNQUOTED(${ac_tr_func})
667 dnl Check to see what builtin math functions are supported
669 dnl check for __builtin_abs
670 dnl check for __builtin_fabsf
671 dnl check for __builtin_fabs
672 dnl check for __builtin_fabl
673 dnl check for __builtin_labs
674 dnl check for __builtin_sqrtf
675 dnl check for __builtin_sqrtl
676 dnl check for __builtin_sqrt
677 dnl check for __builtin_sinf
678 dnl check for __builtin_sin
679 dnl check for __builtin_sinl
680 dnl check for __builtin_cosf
681 dnl check for __builtin_cos
682 dnl check for __builtin_cosl
684 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
685 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
686 dnl Test for builtin math functions.
687 dnl These are made in gcc/c-common.c
688 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
689 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
690 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
691 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
692 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
694 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
695 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
696 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
698 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
699 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
700 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
702 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
703 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
704 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
706 dnl There is, without a doubt, a more elegant way to have these
707 dnl names exported so that they won't be stripped out of acconfig.h by
708 dnl autoheader. I leave this as an exercise to somebody less frustrated
709 dnl than I.... please email the libstdc++ list if you can figure out a
710 dnl more elegant approach (see autoconf/acgen.m4 and specifically
711 dnl AC_CHECK_FUNC for things to steal.)
713 if test x$dummyvar = x"yes"; then
714 AC_DEFINE(HAVE___BUILTIN_ABS)
715 AC_DEFINE(HAVE___BUILTIN_LABS)
716 AC_DEFINE(HAVE___BUILTIN_COS)
717 AC_DEFINE(HAVE___BUILTIN_COSF)
718 AC_DEFINE(HAVE___BUILTIN_COSL)
719 AC_DEFINE(HAVE___BUILTIN_FABS)
720 AC_DEFINE(HAVE___BUILTIN_FABSF)
721 AC_DEFINE(HAVE___BUILTIN_FABSL)
722 AC_DEFINE(HAVE___BUILTIN_SIN)
723 AC_DEFINE(HAVE___BUILTIN_SINF)
724 AC_DEFINE(HAVE___BUILTIN_SINL)
725 AC_DEFINE(HAVE___BUILTIN_SQRT)
726 AC_DEFINE(HAVE___BUILTIN_SQRTF)
727 AC_DEFINE(HAVE___BUILTIN_SQRTL)
732 dnl Check to see what the underlying c library is like
733 dnl These checks need to do two things:
734 dnl 1) make sure the name is declared when using the c++ compiler
735 dnl 2) make sure the name has "C" linkage
736 dnl This might seem like overkill but experience has shown that it's not...
738 dnl Define HAVE_STRTOLD if "strtold" is declared and links
739 dnl Define HAVE_STRTOF if "strtof" is declared and links
740 dnl Define HAVE_DRAND48 if "drand48" is declared and links
742 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
743 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
744 ac_test_CXXFLAGS="${CXXFLAGS+set}"
745 ac_save_CXXFLAGS="$CXXFLAGS"
746 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
748 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
749 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
750 AC_CHECK_FUNCS(drand48)
752 CXXFLAGS="$ac_save_CXXFLAGS"
756 dnl Check to see what the underlying c library is like
757 dnl These checks need to do two things:
758 dnl 1) make sure the name is declared when using the c++ compiler
759 dnl 2) make sure the name has "C" linkage
760 dnl This might seem like overkill but experience has shown that it's not...
762 dnl Define HAVE_ISATTY if "isatty" is declared and links
764 dnl GLIBCPP_CHECK_UNISTD_SUPPORT
765 AC_DEFUN(GLIBCPP_CHECK_UNISTD_SUPPORT, [
766 ac_test_CXXFLAGS="${CXXFLAGS+set}"
767 ac_save_CXXFLAGS="$CXXFLAGS"
768 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
770 GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1(isatty)
772 CXXFLAGS="$ac_save_CXXFLAGS"
776 dnl Check to see what the underlying c library or math library is like.
777 dnl These checks need to do two things:
778 dnl 1) make sure the name is declared when using the c++ compiler
779 dnl 2) make sure the name has "C" linkage
780 dnl This might seem like overkill but experience has shown that it's not...
782 dnl Define HAVE_CARGF etc if "cargf" is found.
784 dnl GLIBCPP_CHECK_MATH_SUPPORT
785 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
786 ac_test_CXXFLAGS="${CXXFLAGS+set}"
787 ac_save_CXXFLAGS="$CXXFLAGS"
788 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
791 AC_CHECK_LIB(m, sin, libm="-lm")
795 dnl Check to see if certain C math functions exist.
796 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
797 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
798 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
799 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
800 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
801 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
802 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
803 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
805 dnl Check to see if basic C math functions have float versions.
806 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
811 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
814 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
815 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
816 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
817 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
818 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
819 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
820 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
821 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
822 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
823 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
824 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
825 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
826 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
827 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
828 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
829 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
831 dnl Check to see if basic C math functions have long double versions.
832 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
837 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
840 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
841 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
842 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
843 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
844 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
845 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
846 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
847 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
848 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
849 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
850 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
851 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
852 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
853 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
854 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
855 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
856 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
858 dnl Some runtimes have these functions with a preceding underscore. Please
859 dnl keep this sync'd with the one above. And if you add any new symbol,
860 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
861 dnl Check to see if certain C math functions exist.
863 dnl Check to see if basic C math functions have float versions.
864 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
866 _acosf _asinf _atanf \
868 _coshf _sinhf _tanhf)
869 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
873 dnl Check to see if basic C math functions have long double versions.
874 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
876 _acosl _asinl _atanl \
878 _coshl _sinhl _tanhl)
879 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
884 CXXFLAGS="$ac_save_CXXFLAGS"
889 dnl Check to see if there is native support for complex
891 dnl Don't compile bits in math/* if native support exits.
893 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
895 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
896 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
897 dnl Check for complex versions of math functions of platform.
898 AC_CHECK_LIB(m, main)
899 AC_REPLACE_MATHFUNCS(nan copysignf)
901 dnl For __signbit to signbit conversions.
902 AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
903 AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
905 dnl Compile the long double complex functions only if the function
906 dnl provides the non-complex long double functions that are needed.
907 dnl Currently this includes copysignl, which should be
908 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
909 if test x$ac_cv_func_copysignl = x"yes"; then
910 AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
913 if test -n "$LIBMATHOBJS"; then
916 AC_SUBST(LIBMATHOBJS)
917 AM_CONDITIONAL(GLIBCPP_BUILD_LIBMATH, test "$need_libmath" = yes)
921 dnl Check to see what architecture and operating system we are compiling
922 dnl for. Also, if architecture- or OS-specific flags are required for
923 dnl compilation, pick them up here.
925 dnl GLIBCPP_CHECK_TARGET
926 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
927 . [$]{glibcpp_basedir}/configure.target
928 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
929 AC_MSG_RESULT(OS config directory is $os_include_dir)
934 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
935 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
936 dnl must have been previously checked.)
938 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
939 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
941 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
942 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
944 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
945 dnl others even if wchar_t support is not on.
946 AC_MSG_CHECKING([for mbstate_t])
947 AC_TRY_COMPILE([#include <wchar.h>],
948 [mbstate_t teststate;],
949 have_mbstate_t=yes, have_mbstate_t=no)
950 AC_MSG_RESULT($have_mbstate_t)
951 if test x"$have_mbstate_t" = xyes; then
952 AC_DEFINE(HAVE_MBSTATE_T)
955 dnl Sanity check for existence of ISO C99 headers for extended encoding.
956 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
957 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
959 dnl Only continue checking if the ISO C99 headers exist and support is on.
960 if test x"$ac_has_wchar_h" = xyes &&
961 test x"$ac_has_wctype_h" = xyes &&
962 test x"$enable_c_mbchar" != xno; then
964 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
965 dnl numeric_limits can instantiate type_traits<wchar_t>
966 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
967 AC_TRY_COMPILE([#include <wchar.h>],
968 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
969 has_wchar_minmax=yes, has_wchar_minmax=no)
970 AC_MSG_RESULT($has_wchar_minmax)
972 dnl Test wchar.h for WEOF, which is what we use to determine whether
973 dnl to specialize for char_traits<wchar_t> or not.
974 AC_MSG_CHECKING([for WEOF])
977 #include <stddef.h>],
979 has_weof=yes, has_weof=no)
980 AC_MSG_RESULT($has_weof)
982 dnl Tests for wide character functions used in char_traits<wchar_t>.
984 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
987 dnl Checks for names injected into std:: by the c_std headers.
988 AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
989 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
990 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
991 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
992 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
993 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
996 AC_MSG_CHECKING([for ISO C99 wchar_t support])
997 if test x"$has_weof" = xyes &&
998 test x"$has_wchar_minmax" = xyes &&
999 test x"$ac_wfuncs" = xyes; then
1000 ac_isoC99_wchar_t=yes
1002 ac_isoC99_wchar_t=no
1004 AC_MSG_RESULT($ac_isoC99_wchar_t)
1006 dnl Use iconv for wchar_t to char conversions. As such, check for
1007 dnl X/Open Portability Guide, version 2 features (XPG2).
1008 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1009 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1011 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1012 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1013 ac_save_LIBS="$LIBS"
1014 LIBS="$LIBS $libiconv"
1016 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1017 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1019 LIBS="$ac_save_LIBS"
1021 AC_MSG_CHECKING([for XPG2 wchar_t support])
1022 if test x"$ac_has_iconv_h" = xyes &&
1023 test x"$ac_has_langinfo_h" = xyes &&
1024 test x"$ac_XPG2funcs" = xyes; then
1029 AC_MSG_RESULT($ac_XPG2_wchar_t)
1031 dnl At the moment, only enable wchar_t specializations if all the
1032 dnl above support is present.
1033 AC_MSG_CHECKING([for enabled wchar_t specializations])
1034 if test x"$ac_isoC99_wchar_t" = xyes &&
1035 test x"$ac_XPG2_wchar_t" = xyes; then
1036 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1037 AC_MSG_RESULT("yes")
1042 dnl Wide characters disabled by the user.
1043 AC_MSG_WARN([wchar_t support disabled.])
1049 dnl Check to see if debugging libraries are to be built.
1051 dnl GLIBCPP_ENABLE_DEBUG
1054 dnl builds a separate set of debugging libraries in addition to the
1055 dnl normal (shared, static) libstdc++ binaries.
1058 dnl builds only one (non-debug) version of libstdc++.
1060 dnl --enable-debug-flags=FLAGS
1061 dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
1063 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1064 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1065 dnl defaults to `no'.
1066 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1067 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1068 AC_ARG_ENABLE(debug,
1069 changequote(<<, >>)dnl
1070 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1071 changequote([, ])dnl
1072 [case "${enableval}" in
1073 yes) enable_debug=yes ;;
1074 no) enable_debug=no ;;
1075 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1077 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1078 AC_MSG_CHECKING([for additional debug build])
1079 AC_MSG_RESULT($enable_debug)
1080 AM_CONDITIONAL(GLIBCPP_BUILD_DEBUG, test "$enable_debug" = yes)
1084 dnl Check for explicit debug flags.
1086 dnl GLIBCPP_ENABLE_DEBUG_FLAGS
1088 dnl --enable-debug-flags='-O1'
1089 dnl is a general method for passing flags to be used when
1090 dnl building debug libraries with --enable-debug.
1092 dnl --disable-debug-flags does nothing.
1093 dnl + Usage: GLIBCPP_ENABLE_DEBUG_FLAGS(default flags)
1094 dnl If "default flags" is an empty string (or "none"), the effect is
1095 dnl the same as --disable or --enable=no.
1096 AC_DEFUN(GLIBCPP_ENABLE_DEBUG_FLAGS, [dnl
1097 define([GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1098 AC_ARG_ENABLE(debug_flags,
1099 changequote(<<, >>)dnl
1100 << --enable-debug-flags=FLAGS pass compiler FLAGS when building debug
1101 library;[default=>>GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT],
1102 changequote([, ])dnl
1103 [case "${enableval}" in
1105 -*) enable_debug_flags="${enableval}" ;;
1106 *) AC_MSG_ERROR([Unknown argument to extra debugging flags]) ;;
1108 enable_debug_flags=GLIBCPP_ENABLE_DEBUG_FLAGS_DEFAULT)dnl
1110 dnl Option parsed, now set things appropriately
1111 case x"$enable_debug" in
1113 case "$enable_debug_flags" in
1115 DEBUG_FLAGS="-g3 -O0";;
1117 DEBUG_FLAGS="${enableval}"
1124 AC_SUBST(DEBUG_FLAGS)
1126 AC_MSG_CHECKING([for debug build flags])
1127 AC_MSG_RESULT($DEBUG_FLAGS)
1132 dnl Check for "unusual" flags to pass to the compiler while building.
1134 dnl GLIBCPP_ENABLE_CXX_FLAGS
1135 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1136 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1137 dnl Somehow this same set of flags must be passed when [re]building
1139 dnl --disable-cxx-flags passes nothing.
1140 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1141 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1142 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1143 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1144 dnl If "default flags" is an empty string (or "none"), the effect is
1145 dnl the same as --disable or --enable=no.
1146 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1147 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1148 AC_MSG_CHECKING([for extra compiler flags for building])
1149 AC_ARG_ENABLE(cxx_flags,
1150 changequote(<<, >>)dnl
1151 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1152 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1153 changequote([, ])dnl
1154 [case "x$enable_cxx_flags" in
1156 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1158 enable_cxx_flags='' ;;
1160 enable_cxx_flags="$enableval" ;;
1162 enable_cxx_flags=GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT)
1164 dnl Run through flags (either default or command-line) and set anything
1165 dnl extra (e.g., #defines) that must accompany particular g++ options.
1166 if test -n "$enable_cxx_flags"; then
1167 for f in $enable_cxx_flags; do
1171 *) # and we're trying to pass /what/ exactly?
1172 AC_MSG_ERROR([compiler flags start with a -]) ;;
1176 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1177 AC_MSG_RESULT($EXTRA_CXX_FLAGS)
1178 AC_SUBST(EXTRA_CXX_FLAGS)
1183 dnl Check for which locale library to use: gnu or generic.
1185 dnl GLIBCPP_ENABLE_CLOCALE
1186 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1187 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1189 dnl default is generic
1191 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1192 AC_MSG_CHECKING([for clocale to use])
1193 AC_ARG_ENABLE(clocale,
1194 [ --enable-clocale enable model for target locale package.
1195 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1197 if test x$enable_clocale = xno; then
1202 enable_clocale_flag=$enable_clocale
1204 dnl Probe for locale support if no specific model is specified.
1205 dnl Default to "generic"
1206 if test x$enable_clocale_flag = xno; then
1207 case x${target_os} in
1209 AC_EGREP_CPP([_GLIBCPP_ok], [
1210 #include <features.h>
1211 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1214 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1216 # Test for bugs early in glibc-2.2.x series
1217 if test x$enable_clocale_flag = xgnu; then
1219 #define _GNU_SOURCE 1
1222 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
1223 extern __typeof(newlocale) __newlocale;
1224 extern __typeof(duplocale) __duplocale;
1225 extern __typeof(strcoll_l) __strcoll_l;
1229 const char __one[] = "Äuglein Augmen";
1230 const char __two[] = "Äuglein";
1235 loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1236 loc_dup = __duplocale(loc);
1237 i = __strcoll_l(__one, __two, loc);
1238 j = __strcoll_l(__one, __two, loc_dup);
1242 [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1243 [enable_clocale_flag=generic])
1246 # ... at some point put __strxfrm_l tests in as well.
1249 enable_clocale_flag=generic
1254 dnl Deal with gettext issues.
1256 [ --enable-nls use Native Language Support (default)],
1260 dnl Set configure bits for specified locale package
1261 case x${enable_clocale_flag} in
1263 AC_MSG_RESULT(generic)
1265 CLOCALE_H=config/locale/generic/c_locale.h
1266 CLOCALE_CC=config/locale/generic/c_locale.cc
1267 CCODECVT_H=config/locale/generic/codecvt_specializations.h
1268 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1269 CCOLLATE_CC=config/locale/generic/collate_members.cc
1270 CCTYPE_CC=config/locale/generic/ctype_members.cc
1271 CMESSAGES_H=config/locale/generic/messages_members.h
1272 CMESSAGES_CC=config/locale/generic/messages_members.cc
1273 CMONEY_CC=config/locale/generic/monetary_members.cc
1274 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1275 CTIME_CC=config/locale/generic/time_members.cc
1276 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1281 # Declare intention to use gettext, and add support for specific
1283 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1286 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1287 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1288 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1291 # Export the build objects.
1292 for ling in $ALL_LINGUAS; do \
1293 glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1294 glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1296 AC_SUBST(glibcpp_MOFILES)
1297 AC_SUBST(glibcpp_POFILES)
1299 CLOCALE_H=config/locale/gnu/c_locale.h
1300 CLOCALE_CC=config/locale/gnu/c_locale.cc
1301 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1302 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
1303 CCOLLATE_CC=config/locale/gnu/collate_members.cc
1304 CCTYPE_CC=config/locale/gnu/ctype_members.cc
1305 CMESSAGES_H=config/locale/gnu/messages_members.h
1306 CMESSAGES_CC=config/locale/gnu/messages_members.cc
1307 CMONEY_CC=config/locale/gnu/monetary_members.cc
1308 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1309 CTIME_CC=config/locale/gnu/time_members.cc
1310 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
1313 AC_MSG_RESULT(generic)
1315 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1316 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1317 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1318 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1319 CCOLLATE_CC=config/locale/generic/collate_members.cc
1320 CCTYPE_CC=config/locale/generic/ctype_members.cc
1321 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1322 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1323 CMONEY_CC=config/locale/generic/monetary_members.cc
1324 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1325 CTIME_CC=config/locale/generic/time_members.cc
1326 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1329 echo "$enable_clocale is an unknown locale package" 1>&2
1334 # This is where the testsuite looks for locale catalogs, using the
1335 # -DLOCALEDIR define during testsuite compilation.
1336 glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1337 AC_SUBST(glibcpp_localedir)
1341 AC_SUBST(CCODECVT_H)
1342 AC_SUBST(CMESSAGES_H)
1343 AC_SUBST(CCODECVT_CC)
1344 AC_SUBST(CCOLLATE_CC)
1346 AC_SUBST(CMESSAGES_CC)
1348 AC_SUBST(CNUMERIC_CC)
1350 AC_SUBST(CLOCALE_CC)
1351 AC_SUBST(CLOCALE_INTERNAL_H)
1356 dnl Check for which I/O library to use: libio, or something specific.
1358 dnl GLIBCPP_ENABLE_CSTDIO
1359 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1361 dnl default is stdio
1363 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1364 AC_MSG_CHECKING([for cstdio to use])
1365 AC_ARG_ENABLE(cstdio,
1366 [ --enable-cstdio enable stdio for target io package.
1367 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1369 if test x$enable_cstdio = xno; then
1372 enable_cstdio=stdio)
1374 enable_cstdio_flag=$enable_cstdio
1376 dnl Check if a valid I/O package
1377 case x${enable_cstdio_flag} in
1379 CSTDIO_H=config/io/c_io_libio.h
1380 BASIC_FILE_H=config/io/basic_file_libio.h
1381 BASIC_FILE_CC=config/io/basic_file_libio.cc
1382 AC_MSG_RESULT(libio)
1384 # see if we are on a system with libio native (ie, linux)
1385 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1387 # Need to check and see what version of glibc is being used. If
1388 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1389 # compile most of libio for linux systems.
1390 if test x$has_libio = x"yes"; then
1393 AC_MSG_CHECKING([for glibc version >= 2.2])
1394 AC_EGREP_CPP([ok], [
1395 #include <features.h>
1396 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1399 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1400 AC_MSG_RESULT($glibc_satisfactory)
1404 # XXX at the moment, admit defeat and force the recompilation
1405 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1406 glibc_satisfactory=no
1408 if test x$glibc_satisfactory = x"yes"; then
1413 # bkoz XXX need to add checks to enable this
1414 # pme XXX here's a first pass at such a check
1415 if test x$enable_c_mbchar != xno; then
1423 # Using libio, but <libio.h> doesn't exist on the target system. . .
1425 # bkoz XXX need to add checks to enable this
1426 # pme XXX here's a first pass at such a check
1427 if test x$enable_c_mbchar != xno; then
1434 xstdio | x | xno | xnone | xyes)
1436 CSTDIO_H=config/io/c_io_stdio.h
1437 BASIC_FILE_H=config/io/basic_file_stdio.h
1438 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1439 AC_MSG_RESULT(stdio)
1441 # We're not using stdio.
1446 echo "$enable_cstdio is an unknown io package" 1>&2
1451 AC_SUBST(BASIC_FILE_H)
1452 AC_SUBST(BASIC_FILE_CC)
1454 # 2000-08-04 bkoz hack
1455 CCODECVT_C=config/io/c_io_libio_codecvt.c
1456 AC_SUBST(CCODECVT_C)
1457 # 2000-08-04 bkoz hack
1459 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1460 test "$need_libio" = yes || test "$need_wlibio" = yes)
1461 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1462 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1463 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1464 libio_la=../libio/libio.la
1473 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1474 dnl We must stage the required headers so that they will be installed
1475 dnl with the library (unlike libgcc, the STL implementation is provided
1476 dnl solely within headers). Since we must not inject random user-space
1477 dnl macro names into user-provided C++ code, we first stage into <file>-in
1478 dnl and process to <file> with an output command. The reason for a two-
1479 dnl stage process here is to correctly handle $srcdir!=$objdir without
1480 dnl having to write complex code (the sed commands to clean the macro
1481 dnl namespace are complex and fragile enough as it is). We must also
1482 dnl add a relative path so that -I- is supported properly.
1484 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1485 AC_MSG_CHECKING([for thread model used by GCC])
1486 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1487 AC_MSG_RESULT([$target_thread_file])
1489 if test $target_thread_file != single; then
1490 AC_DEFINE(HAVE_GTHR_DEFAULT)
1491 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1494 glibcpp_thread_h=gthr-$target_thread_file.h
1495 AC_SUBST(glibcpp_thread_h)
1500 dnl Check for exception handling support. If an explicit enable/disable
1501 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1502 dnl target may or may not support call frame exceptions.
1504 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1505 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1506 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1508 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1510 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1511 AC_MSG_CHECKING([for exception model to use])
1514 AC_ARG_ENABLE(sjlj-exceptions,
1515 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1517 [dnl Botheration. Now we've got to detect the exception model.
1518 dnl Link tests against libgcc.a are problematic since -- at least
1519 dnl as of this writing -- we've not been given proper -L bits for
1520 dnl single-tree newlib and libgloss.
1522 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1523 dnl conftest files before we got a change to grep them first.
1524 cat > conftest.$ac_ext << EOF
1525 [#]line __oline__ "configure"
1534 old_CXXFLAGS="$CXXFLAGS"
1536 if AC_TRY_EVAL(ac_compile); then
1537 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1538 enable_sjlj_exceptions=yes
1539 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1540 enable_sjlj_exceptions=no
1543 CXXFLAGS="$old_CXXFLAGS"
1545 if test x$enable_sjlj_exceptions = xyes; then
1546 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1547 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1548 ac_exception_model_name=sjlj
1549 elif test x$enable_sjlj_exceptions = xno; then
1550 ac_exception_model_name="call frame"
1552 AC_MSG_ERROR([unable to detect exception model])
1555 AC_MSG_RESULT($ac_exception_model_name)
1560 dnl Check for libunwind exception handling support. If enabled then
1561 dnl we assume that the _Unwind_* functions that make up the Unwind ABI
1562 dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by
1563 dnl libunwind instead of libgcc and that libstdc++ has a dependency
1564 dnl on libunwind as well as libgcc.
1566 dnl GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
1567 dnl --enable-libunwind-exceptions forces the use of libunwind.
1568 dnl --disable-libunwind-exceptions assumes there is no libunwind.
1570 dnl Define _GLIBCPP_LIBUNWIND_EXCEPTIONS if requested.
1572 AC_DEFUN(GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS, [
1573 AC_MSG_CHECKING([for use of libunwind])
1574 AC_ARG_ENABLE(libunwind-exceptions,
1575 [ --enable-libunwind-exceptions force use of libunwind for exceptions],
1576 use_libunwind_exceptions=$enableval,
1577 use_libunwind_exceptions=no)
1578 AC_MSG_RESULT($use_libunwind_exceptions)
1579 dnl Option parsed, now set things appropriately
1580 if test x"$use_libunwind_exceptions" = xyes; then
1581 LIBUNWIND_FLAG="-lunwind"
1585 AC_SUBST(LIBUNWIND_FLAG)
1589 dnl Check for ISO/IEC 9899:1999 "C99" support.
1591 dnl GLIBCPP_ENABLE_C99
1592 dnl --enable-c99 defines _GLIBCPP_USE_C99
1593 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1594 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1595 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1596 dnl defaults to `no'.
1597 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1599 dnl GLIBCPP_ENABLE_C99
1600 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1601 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1604 changequote(<<, >>)dnl
1605 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1606 changequote([, ])dnl
1607 [case "$enableval" in
1608 yes) enable_c99=yes ;;
1609 no) enable_c99=no ;;
1610 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1612 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1617 # Check for the existence of <math.h> functions used if C99 is enabled.
1619 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1620 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1621 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1622 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1623 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1624 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1625 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1626 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1627 AC_TRY_COMPILE([#include <math.h>],
1628 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1629 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1630 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1631 AC_TRY_COMPILE([#include <math.h>],
1632 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1633 AC_TRY_COMPILE([#include <math.h>],
1634 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1635 AC_MSG_RESULT($ac_c99_math)
1637 # Check for the existence in <stdio.h> of vscanf, et. al.
1639 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1640 AC_TRY_COMPILE([#include <stdio.h>],
1641 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1642 AC_TRY_COMPILE([#include <stdio.h>
1644 void foo(char* fmt, ...)
1645 {va_list args; va_start(args, fmt);
1646 vfscanf(stderr, "%i", args);}],
1647 [],, [ac_c99_stdio=no])
1648 AC_TRY_COMPILE([#include <stdio.h>
1650 void foo(char* fmt, ...)
1651 {va_list args; va_start(args, fmt);
1652 vscanf("%i", args);}],
1653 [],, [ac_c99_stdio=no])
1654 AC_TRY_COMPILE([#include <stdio.h>
1656 void foo(char* fmt, ...)
1657 {va_list args; va_start(args, fmt);
1658 vsnprintf(fmt, 0, "%i", args);}],
1659 [],, [ac_c99_stdio=no])
1660 AC_TRY_COMPILE([#include <stdio.h>
1662 void foo(char* fmt, ...)
1663 {va_list args; va_start(args, fmt);
1664 vsscanf(fmt, "%i", args);}],
1665 [],, [ac_c99_stdio=no])
1666 AC_MSG_RESULT($ac_c99_stdio)
1668 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1670 AC_MSG_CHECKING([for lldiv_t declaration])
1671 AC_CACHE_VAL(ac_c99_lldiv_t, [
1672 AC_TRY_COMPILE([#include <stdlib.h>],
1674 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1676 AC_MSG_RESULT($ac_c99_lldiv_t)
1678 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1679 AC_TRY_COMPILE([#include <stdlib.h>],
1680 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1681 AC_TRY_COMPILE([#include <stdlib.h>],
1682 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1683 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1684 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1685 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1686 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1687 if test x"$ac_c99_lldiv_t" = x"no"; then
1690 AC_MSG_RESULT($ac_c99_stdlib)
1692 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1693 # XXX the wchar.h checks should be rolled into the general C99 bits.
1695 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1696 AC_TRY_COMPILE([#include <wchar.h>],
1697 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1698 AC_TRY_COMPILE([#include <wchar.h>],
1699 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1700 AC_TRY_COMPILE([#include <wchar.h>],
1701 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1702 AC_MSG_RESULT($ac_c99_wchar)
1704 AC_MSG_CHECKING([for enabled ISO C99 support])
1705 if test x"$ac_c99_math" = x"no" ||
1706 test x"$ac_c99_stdio" = x"no" ||
1707 test x"$ac_c99_stdlib" = x"no" ||
1708 test x"$ac_c99_wchar" = x"no"; then
1711 AC_MSG_RESULT($enable_c99)
1713 # Option parsed, now set things appropriately
1714 if test x"$enable_c99" = x"yes"; then
1715 AC_DEFINE(_GLIBCPP_USE_C99)
1723 dnl Check for template specializations for the 'long long' type extension.
1724 dnl The result determines only whether 'long long' I/O is enabled; things
1725 dnl like numeric_limits<> specializations are always available.
1727 dnl GLIBCPP_ENABLE_LONG_LONG
1728 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1729 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1730 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1731 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1732 dnl defaults to `no'.
1733 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1735 dnl GLIBCPP_ENABLE_LONG_LONG
1736 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1737 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1739 AC_ARG_ENABLE(long-long,
1740 changequote(<<, >>)dnl
1741 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1742 changequote([, ])dnl
1743 [case "$enableval" in
1744 yes) enable_long_long=yes ;;
1745 no) enable_long_long=no ;;
1746 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1748 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1753 AC_MSG_CHECKING([for enabled long long I/O support])
1754 # iostreams require strtoll, strtoull to compile
1755 AC_TRY_COMPILE([#include <stdlib.h>],
1756 [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1757 AC_TRY_COMPILE([#include <stdlib.h>],
1758 [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1760 # Option parsed, now set things appropriately
1761 if test x"$enable_long_long" = xyes; then
1762 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1764 AC_MSG_RESULT($enable_long_long)
1771 dnl Check for what type of C headers to use.
1773 dnl GLIBCPP_ENABLE_CHEADERS
1774 dnl --enable-cheaders= [does stuff].
1775 dnl --disable-cheaders [does not do anything, really].
1776 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1777 dnl Where DEFAULT is either `c' or `c_std'.
1778 dnl If ommitted, it defaults to `c_std'.
1779 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1780 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1781 AC_MSG_CHECKING([for c header strategy to use])
1782 AC_ARG_ENABLE(cheaders,
1783 changequote(<<, >>)dnl
1784 << --enable-cheaders=MODEL construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1786 [case "$enableval" in
1791 enable_cheaders=c_std
1793 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1796 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1797 AC_MSG_RESULT($enable_cheaders)
1799 dnl Option parsed, now set things appropriately
1800 case "$enable_cheaders" in
1802 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1805 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1809 AC_SUBST(C_INCLUDE_DIR)
1810 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C, test "$enable_cheaders" = c)
1811 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C_STD, test "$enable_cheaders" = c_std)
1812 AM_CONDITIONAL(GLIBCPP_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes)
1817 dnl Check for wide character support. Has the same effect as the option
1818 dnl in gcc's configure, but in a form that autoconf can mess with.
1820 dnl GLIBCPP_ENABLE_C_MBCHAR
1821 dnl --enable-c-mbchar requests all the wchar_t stuff.
1822 dnl --disable-c-mbchar doesn't.
1823 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1824 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1825 dnl defaults to `no'.
1826 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1827 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1828 AC_ARG_ENABLE(c-mbchar,
1829 changequote(<<, >>)dnl
1830 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1831 changequote([, ])dnl
1832 [case "$enableval" in
1833 yes) enable_c_mbchar=yes ;;
1834 no) enable_c_mbchar=no ;;
1835 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1837 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1838 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1843 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1845 dnl TOPLEVEL_INCLUDES
1846 dnl LIBMATH_INCLUDES
1847 dnl LIBSUPCXX_INCLUDES
1850 dnl GLIBCPP_EXPORT_INCLUDES
1851 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1852 # Root level of the build directory include sources.
1853 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1855 # Passed down for canadian crosses.
1856 if test x"$CANADIAN" = xyes; then
1857 TOPLEVEL_INCLUDES='-I$(includedir)'
1860 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1862 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1864 if test x"$need_libio" = xyes; then
1865 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1866 AC_SUBST(LIBIO_INCLUDES)
1869 # Now, export this to all the little Makefiles....
1870 AC_SUBST(GLIBCPP_INCLUDES)
1871 AC_SUBST(TOPLEVEL_INCLUDES)
1872 AC_SUBST(LIBMATH_INCLUDES)
1873 AC_SUBST(LIBSUPCXX_INCLUDES)
1878 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1880 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1881 # Optimization flags that are probably a good idea for thrill-seekers. Just
1882 # uncomment the lines below and make, everything else is ready to go...
1883 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1885 AC_SUBST(OPTIMIZE_CXXFLAGS)
1887 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1888 AC_SUBST(WARN_FLAGS)
1892 dnl GLIBCPP_EXPORT_INSTALL_INFO
1893 dnl calculates gxx_install_dir
1894 dnl exports glibcpp_toolexecdir
1895 dnl exports glibcpp_toolexeclibdir
1896 dnl exports glibcpp_prefixdir
1898 dnl Assumes cross_compiling bits already done, and with_cross_host in
1901 dnl GLIBCPP_EXPORT_INSTALL_INFO
1902 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1903 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1904 # exported correctly in GLIBCPP_CONFIGURE.
1905 glibcpp_toolexecdir=no
1906 glibcpp_toolexeclibdir=no
1907 glibcpp_prefixdir=${prefix}
1909 # Process the option --with-gxx-include-dir=<path to include-files directory>
1910 AC_MSG_CHECKING([for --with-gxx-include-dir])
1911 AC_ARG_WITH(gxx-include-dir,
1912 [ --with-gxx-include-dir the installation directory for include files],
1913 [case "${withval}" in
1915 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1922 gxx_include_dir=${withval}
1924 esac], [gxx_include_dir=no])
1925 AC_MSG_RESULT($gxx_include_dir)
1927 # Process the option "--enable-version-specific-runtime-libs"
1928 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1929 AC_ARG_ENABLE(version-specific-runtime-libs,
1930 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1931 [case "$enableval" in
1932 yes) version_specific_libs=yes ;;
1933 no) version_specific_libs=no ;;
1934 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
1936 version_specific_libs=no)dnl
1937 # Option set, now we can test it.
1938 AC_MSG_RESULT($version_specific_libs)
1940 # Default case for install directory for include files.
1941 if test $version_specific_libs = no && test $gxx_include_dir = no; then
1942 gxx_include_dir='$(prefix)'/include/c++/${gcc_version}
1945 # Version-specific runtime libs processing.
1946 if test $version_specific_libs = yes; then
1947 # Need the gcc compiler version to know where to install libraries
1948 # and header files if --enable-version-specific-runtime-libs option
1950 if test x"$gxx_include_dir" = x"no"; then
1951 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++
1953 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1954 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1957 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1958 # Install a library built with a cross compiler in tooldir, not libdir.
1959 if test x"$glibcpp_toolexecdir" = x"no"; then
1960 if test -n "$with_cross_host" &&
1961 test x"$with_cross_host" != x"no"; then
1962 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1963 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1965 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1966 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1970 AC_MSG_CHECKING([for install location])
1971 AC_MSG_RESULT($gxx_include_dir)
1973 AC_SUBST(glibcpp_prefixdir)
1974 AC_SUBST(gxx_include_dir)
1975 AC_SUBST(glibcpp_toolexecdir)
1976 AC_SUBST(glibcpp_toolexeclibdir)
1980 # Check for functions in math library.
1981 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1983 # This file can be copied and used freely without restrictions. It can
1984 # be used in projects which are not available under the GNU Public License
1985 # but which still want to provide support for the GNU gettext functionality.
1986 # Please note that the actual code is *not* freely available.
1990 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1991 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1992 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
1995 dnl This macro searches for a GNU version of make. If a match is found, the
1996 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1997 dnl set to "#". This is useful for including a special features in a Makefile,
1998 dnl which cannot be handled by other versions of make. The variable
1999 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
2000 dnl the empty string otherwise.
2002 dnl Here is an example of its use:
2004 dnl Makefile.in might contain:
2006 dnl # A failsafe way of putting a dependency rule into a makefile
2008 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
2010 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
2011 dnl @ifGNUmake@ include $(DEPEND)
2012 dnl @ifGNUmake@ endif
2014 dnl Then configure.in would normally contain:
2016 dnl CHECK_GNU_MAKE()
2017 dnl AC_OUTPUT(Makefile)
2019 dnl Then perhaps to cause gnu make to override any other make, we could do
2020 dnl something like this (note that GNU make always looks for GNUmakefile first):
2022 dnl if ! test x$_cv_gnu_make_command = x ; then
2023 dnl mv Makefile GNUmakefile
2024 dnl echo .DEFAULT: > Makefile ;
2025 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
2028 dnl Then, if any (well almost any) other make is called, and GNU make also
2029 dnl exists, then the other make wraps the GNU make.
2031 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
2032 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
2034 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
2035 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
2036 dnl #### conditional's subshell (" --version" is not a command), using a
2037 dnl #### different option to grep(1).
2039 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
2040 dnl #### ${MAKE:-make}).
2043 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
2044 _cv_gnu_make_command='' ;
2045 dnl Search all the common names for GNU make
2046 for a in "${MAKE-make}" make gmake gnumake ; do
2047 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
2049 _cv_gnu_make_command=$a ;
2054 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
2055 dnl string, '#' otherwise
2056 if test "x$_cv_gnu_make_command" != "x" ; then
2065 dnl Check for headers for, and arguments to, the setrlimit() function.
2066 dnl Used only in testsuite_hooks.h.
2067 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
2068 AC_TRY_COMPILE([#include <unistd.h>
2069 #include <sys/time.h>
2070 #include <sys/resource.h>
2071 ], [ int f = RLIMIT_$1 ; ],
2072 [glibcpp_mresult=1], [glibcpp_mresult=0])
2073 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
2074 [Only used in build directory testsuite_hooks.h.])
2076 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
2077 setrlimit_have_headers=yes
2078 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
2080 setrlimit_have_headers=no)
2081 # If don't have the headers, then we can't run the tests now, and we
2082 # won't be seeing any of these during testsuite compilation.
2083 if test $setrlimit_have_headers = yes; then
2084 # Can't do these in a loop, else the resulting syntax is wrong.
2085 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
2086 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
2087 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
2088 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
2090 # Check for rlimit, setrlimit.
2091 AC_CACHE_VAL(ac_setrlimit, [
2092 AC_TRY_COMPILE([#include <unistd.h>
2093 #include <sys/time.h>
2094 #include <sys/resource.h>
2096 [ struct rlimit r; setrlimit(0, &r);],
2097 [ac_setrlimit=yes], [ac_setrlimit=no])
2101 AC_MSG_CHECKING([for testsuite memory limit support])
2102 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
2104 AC_DEFINE(_GLIBCPP_MEM_LIMITS)
2108 AC_MSG_RESULT($ac_mem_limits)
2113 dnl Does any necessary configuration of the testsuite directory. Generates
2114 dnl the testsuite_hooks.h header.
2116 dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
2117 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
2118 GLIBCPP_CHECK_SETRLIMIT
2120 # Look for setenv, so that extended locale tests can be performed.
2121 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
2123 # Export file names for ABI checking.
2124 baseline_file="${glibcpp_srcdir}/config/abi/${abi_baseline_triplet}/baseline_symbols.txt"
2125 AC_SUBST(baseline_file)
2127 # Don't do ABI checking unless native.
2128 AM_CONDITIONAL(GLIBCPP_BUILD_ABI_CHECK,
2129 test x"$build" = x"$host" && test -z "$with_cross_host")
2133 sinclude(../libtool.m4)
2134 dnl The lines below arrange for aclocal not to bring an installed
2135 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
2136 dnl add a definition of LIBTOOL to Makefile.in.
2137 ifelse(,,,[AC_SUBST(LIBTOOL)
2138 AC_DEFUN([AM_PROG_LIBTOOL])
2139 AC_DEFUN([AC_LIBTOOL_DLOPEN])
2140 AC_DEFUN([AC_PROG_LD])
2144 # Check whether LC_MESSAGES is available in <locale.h>.
2145 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2147 # This file file be copied and used freely without restrictions. It can
2148 # be used in projects which are not available under the GNU Public License
2149 # but which still want to provide support for the GNU gettext functionality.
2150 # Please note that the actual code is *not* freely available.
2154 AC_DEFUN(AC_LC_MESSAGES, [
2155 AC_CHECK_HEADER(locale.h, [
2156 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
2157 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2158 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
2159 if test $ac_cv_val_LC_MESSAGES = yes; then
2160 AC_DEFINE(HAVE_LC_MESSAGES)
2167 dnl Check for whether the Boost-derived checks should be turned on.
2169 dnl GLIBCPP_ENABLE_CONCEPT_CHECKS
2170 dnl --enable-concept-checks turns them on.
2171 dnl --disable-concept-checks leaves them off.
2172 dnl + Usage: GLIBCPP_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2173 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2174 dnl defaults to `no'.
2175 AC_DEFUN(GLIBCPP_ENABLE_CONCEPT_CHECKS, [dnl
2176 define([GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
2177 AC_ARG_ENABLE(concept-checks,
2178 changequote(<<, >>)dnl
2179 << --enable-concept-checks use Boost-derived template checks [default=>>GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT],
2180 changequote([, ])dnl
2181 [case "$enableval" in
2182 yes) enable_concept_checks=yes ;;
2183 no) enable_concept_checks=no ;;
2184 *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
2186 enable_concept_checks=GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
2187 dnl Option parsed, now set things appropriately
2188 if test x"$enable_concept_checks" = xyes; then
2189 AC_DEFINE(_GLIBCPP_CONCEPT_CHECKS)
2195 dnl Add version tags to symbols in shared library (or not), additionally
2196 dnl marking other symbols as private/local (or not).
2198 dnl GLIBCPP_ENABLE_SYMVERS
2199 dnl --enable-symvers=style adds a version script to the linker call when
2200 dnl creating the shared library. The choice of version script is
2201 dnl controlled by 'style'.
2202 dnl --disable-symvers does not.
2203 dnl + Usage: GLIBCPP_ENABLE_SYMVERS[(DEFAULT)]
2204 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2205 dnl defaults to `no'. Passing `yes' tries to choose a default style
2206 dnl based on linker characteristics. Passing 'no' disables versioning.
2207 AC_DEFUN(GLIBCPP_ENABLE_SYMVERS, [dnl
2208 define([GLIBCPP_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl
2209 AC_ARG_ENABLE(symvers,
2210 changequote(<<, >>)dnl
2211 << --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCPP_ENABLE_SYMVERS_DEFAULT],
2212 changequote([, ])dnl
2213 [case "$enableval" in
2214 yes) enable_symvers=yes ;;
2215 no) enable_symvers=no ;;
2216 # other names here, just as sanity checks
2217 #gnu|sun|etcetera) enable_symvers=$enableval ;;
2218 gnu) enable_symvers=$enableval ;;
2219 *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;;
2221 enable_symvers=GLIBCPP_ENABLE_SYMVERS_DEFAULT)dnl
2223 # If we never went through the GLIBCPP_CHECK_LINKER_FEATURES macro, then we
2224 # don't know enough about $LD to do tricks...
2225 if test x$enable_shared = xno ||
2227 test x$glibcpp_gnu_ld_version = x; then
2231 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
2232 if test $enable_symvers != no; then
2233 AC_MSG_CHECKING([for shared libgcc])
2234 ac_save_CFLAGS="$CFLAGS"
2236 AC_TRY_LINK(, [return 0], glibcpp_shared_libgcc=yes, glibcpp_shared_libgcc=no)
2237 CFLAGS="$ac_save_CFLAGS"
2238 AC_MSG_RESULT($glibcpp_shared_libgcc)
2241 # For GNU ld, we need at least this version. It's 2.12 in the same format
2242 # as the tested-for version. See GLIBCPP_CHECK_LINKER_FEATURES for more.
2243 glibcpp_min_gnu_ld_version=21200
2245 # Check to see if unspecified "yes" value can win, given results
2247 if test $enable_symvers = yes ; then
2248 if test $with_gnu_ld = yes &&
2249 test $glibcpp_shared_libgcc = yes ;
2251 if test $glibcpp_gnu_ld_version -ge $glibcpp_min_gnu_ld_version ; then
2254 ac_test_CFLAGS="${CFLAGS+set}"
2255 ac_save_CFLAGS="$CFLAGS"
2256 CFLAGS='-shared -Wl,--version-script,conftest.map'
2259 echo 'FOO { global: f[a-z]o; local: *; };' > conftest.map
2261 AC_TRY_LINK([int foo;],, enable_symvers=gnu)
2262 if test "$ac_test_CFLAGS" = set; then
2263 CFLAGS="$ac_save_CFLAGS"
2265 # this is the suspicious part
2276 dnl Everything parsed; figure out what file to use.
2277 case $enable_symvers in
2279 SYMVER_MAP=config/linker-map.dummy
2282 SYMVER_MAP=config/linker-map.gnu
2283 AC_DEFINE(_GLIBCPP_SYMVER)
2287 AC_SUBST(SYMVER_MAP)
2288 AM_CONDITIONAL(GLIBCPP_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
2289 AC_MSG_CHECKING([versioning on shared library symbols])
2290 AC_MSG_RESULT($enable_symvers)