2 dnl Initialize basic configure bits, set toplevel_srcdir for Makefiles.
4 dnl GLIBCPP_TOPREL_CONFIGURE
5 AC_DEFUN(GLIBCPP_TOPREL_CONFIGURE, [
6 dnl Default to --enable-multilib (this is also passed by default
7 dnl from the ubercommon-top-level configure)
8 AC_ARG_ENABLE(multilib,
9 [ --enable-multilib build hella library versions (default)],
10 [case "${enableval}" in
13 *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
14 esac], [multilib=yes])dnl
16 # When building with srcdir == objdir, links to the source files will
17 # be created in directories within the target_subdir. We have to
18 # adjust toplevel_srcdir accordingly, so that configure finds
19 # install-sh and other auxiliary files that live in the top-level
21 if test "${srcdir}" = "."; then
22 if test -z "${with_target_subdir}"; then
25 if test "${with_target_subdir}" != "."; then
26 toprel="${with_multisrctop}../.."
28 toprel="${with_multisrctop}.."
34 AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
35 toplevel_srcdir=\${top_srcdir}/$toprel
36 AC_SUBST(toplevel_srcdir)
40 dnl Initialize the rest of the library configury.
43 AC_DEFUN(GLIBCPP_CONFIGURE, [
44 # Export build and source directories.
45 # These need to be absolute paths, yet at the same time need to
46 # canonicalize only relative paths, because then amd will not unmount
47 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
48 glibcpp_builddir=`${PWDCMD-pwd}`
50 [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
51 *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
53 AC_SUBST(glibcpp_builddir)
54 AC_SUBST(glibcpp_srcdir)
56 dnl This is here just to satisfy automake.
57 ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
60 # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also
61 # be 'cp -p' if linking isn't available. Uncomment the next line to
62 # force a particular method.
63 #ac_cv_prog_LN_S='cp -p'
66 # We use these options to decide which functions to include.
67 AC_ARG_WITH(target-subdir,
68 [ --with-target-subdir=SUBDIR
69 configuring in a subdirectory])
70 AC_ARG_WITH(cross-host,
71 [ --with-cross-host=HOST configuring with a cross compiler])
73 glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
74 AC_SUBST(glibcpp_basedir)
76 # Never versions of autoconf add an underscore to these functions.
77 # Prevent future problems ...
78 ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
79 ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
80 ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
81 ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
84 # FIXME: We temporarily define our own version of AC_PROG_CC. This is
85 # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
86 # are probably using a cross compiler, which will not be able to fully
87 # link an executable. This is addressed in later versions of autoconf.
89 AC_DEFUN(LIB_AC_PROG_CC,
90 [AC_BEFORE([$0], [AC_PROG_CPP])dnl
91 dnl Fool anybody using AC_PROG_CC.
92 AC_PROVIDE([AC_PROG_CC])
93 AC_CHECK_PROG(CC, gcc, gcc)
94 if test -z "$CC"; then
95 AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
96 test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
101 if test $ac_cv_prog_gcc = yes; then
103 dnl Check whether -g works, even if CFLAGS is set, in case the package
104 dnl plays around with CFLAGS (such as to build both debugging and
105 dnl normal versions of a library), tasteless as that idea is.
106 ac_test_CFLAGS="${CFLAGS+set}"
107 ac_save_CFLAGS="$CFLAGS"
110 if test "$ac_test_CFLAGS" = set; then
111 CFLAGS="$ac_save_CFLAGS"
112 elif test $ac_cv_prog_cc_g = yes; then
119 test "${CFLAGS+set}" = set || CFLAGS="-g"
125 # Likewise for AC_PROG_CXX. We can't just call it directly because g++
126 # will try to link in libstdc++.
127 AC_DEFUN(LIB_AC_PROG_CXX,
128 [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
129 dnl Fool anybody using AC_PROG_CXX.
130 AC_PROVIDE([AC_PROG_CXX])
131 # Use glibcpp_CXX so that we do not cause CXX to be cached with the
132 # flags that come in CXX while configuring libstdc++. They're different
133 # from those used for all other target libraries. If CXX is set in
134 # the environment, respect that here.
136 AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
137 AC_SUBST(glibcpp_CXX)
139 test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
143 if test $ac_cv_prog_gxx = yes; then
145 dnl Check whether -g works, even if CXXFLAGS is set, in case the package
146 dnl plays around with CXXFLAGS (such as to build both debugging and
147 dnl normal versions of a library), tasteless as that idea is.
148 ac_test_CXXFLAGS="${CXXFLAGS+set}"
149 ac_save_CXXFLAGS="$CXXFLAGS"
152 if test "$ac_test_CXXFLAGS" = set; then
153 CXXFLAGS="$ac_save_CXXFLAGS"
154 elif test $ac_cv_prog_cxx_g = yes; then
161 test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
167 # For directory versioning (e.g., headers) and other variables.
168 AC_MSG_CHECKING([for GCC version number])
169 gcc_version=`$glibcpp_CXX -dumpversion`
170 AC_MSG_RESULT($gcc_version)
172 # For some reason, gettext needs this.
175 AC_CHECK_TOOL(AS, as)
176 AC_CHECK_TOOL(AR, ar)
177 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
182 # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
183 # at least currently, we never actually build a program, so we never
184 # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
185 # fails, because we are probably configuring with a cross compiler
186 # which can't create executables. So we include AC_EXEEXT to keep
187 # automake happy, but we don't execute it, since we don't care about
190 # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
191 # to nothing, so nothing would remain between `then' and `fi' if it
192 # were not for the `:' below.
197 case [$]{glibcpp_basedir} in
198 /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
199 *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
202 # Find platform-specific directories containing configuration info. In
203 # addition to possibly modifying the same flags, it also sets up symlinks.
209 dnl Check to see if g++ can compile this library, and if so, if any version-
210 dnl specific precautions need to be taken.
212 dnl GLIBCPP_CHECK_COMPILER_VERSION
213 AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
214 if test ! -f stamp-sanity-compiler; then
215 AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
222 ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
224 AC_MSG_RESULT($gpp_satisfactory)
225 touch stamp-sanity-compiler
231 dnl Tests for newer compiler features, or features that are present in newer
232 dnl compiler versions but not older compiler versions still in use, should
235 dnl Define WERROR='-Werror' if requested and possible; g++'s that lack the
236 dnl new inlining code or the new system_header pragma will die on -Werror.
237 dnl Leave it out by default and use maint-mode to use it.
239 dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
240 dnl compiler supports it and the user has not requested debug mode.
242 dnl GLIBCPP_CHECK_COMPILER_FEATURES
243 AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
244 # All these tests are for C++; save the language and the compiler flags.
245 # The CXXFLAGS thing is suspicious, but based on similar bits previously
246 # found in GLIBCPP_CONFIGURE.
249 ac_test_CXXFLAGS="${CXXFLAGS+set}"
250 ac_save_CXXFLAGS="$CXXFLAGS"
252 # Check for maintainer-mode bits.
253 if test x"$USE_MAINTAINER_MODE" = xno; then
259 # Check for -ffunction-sections -fdata-sections
260 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
261 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
262 AC_TRY_COMPILE(, [int foo;
263 ], [ac_fdsections=yes], [ac_fdsections=no])
264 if test "$ac_test_CXXFLAGS" = set; then
265 CXXFLAGS="$ac_save_CXXFLAGS"
267 # this is the suspicious part
270 if test x"$ac_fdsections" = x"yes" &&
271 test x"$enable_debug" = x"no"; then
272 SECTION_FLAGS='-ffunction-sections -fdata-sections'
274 AC_MSG_RESULT($ac_fdsections)
278 AC_SUBST(SECTION_FLAGS)
283 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
284 dnl the native linker is in use, all variables will be defined to something
285 dnl safe (like an empty string).
287 dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
288 dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
289 dnl Define LD, with_gnu_ld, and (possibly) glibcpp_gnu_ld_version as
290 dnl side-effects of testing.
292 dnl GLIBCPP_CHECK_LINKER_FEATURES
293 AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
294 # If we're not using GNU ld, then there's no point in even trying these
295 # tests. Check for that first. We should have already tested for gld
296 # by now (in libtool), but require it now just to be safe...
297 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
298 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
299 AC_REQUIRE([AC_PROG_LD])
301 # The name set by libtool depends on the version of libtool. Shame on us
302 # for depending on an impl detail, but c'est la vie. Older versions used
303 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
304 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
305 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
306 # set (hence we're using an older libtool), then set it.
307 if test x${with_gnu_ld+set} != xset; then
308 if test x${ac_cv_prog_gnu_ld+set} != xset; then
309 # We got through "ac_require(ac_prog_ld)" and still not set? Huh?
312 with_gnu_ld=$ac_cv_prog_gnu_ld
316 # Start by getting the version number. I think the libtool test already
317 # does some of this, but throws away the result.
319 ldver=`$LD --version 2>/dev/null | head -1 | \
320 sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
322 glibcpp_gnu_ld_version=`echo $ldver | \
323 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
326 if test "$with_gnu_ld" = "notbroken"; then
327 # GNU ld it is! Joy and bunny rabbits!
329 # All these tests are for C++; save the language and the compiler flags.
330 # Need to do this so that g++ won't try to link in libstdc++
331 ac_test_CFLAGS="${CFLAGS+set}"
332 ac_save_CFLAGS="$CFLAGS"
333 CFLAGS='-x c++ -Wl,--gc-sections'
335 # Check for -Wl,--gc-sections
336 # XXX This test is broken at the moment, as symbols required for
337 # linking are now in libsupc++ (not built yet.....). In addition,
338 # this test has cored on solaris in the past. In addition,
339 # --gc-sections doesn't really work at the moment (keeps on discarding
340 # used sections, first .eh_frame and now some of the glibc sections for
341 # iconv). Bzzzzt. Thanks for playing, maybe next time.
342 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
350 ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
351 if test "$ac_test_CFLAGS" = set; then
352 CFLAGS="$ac_save_CFLAGS"
354 # this is the suspicious part
357 if test "$ac_sectionLDflags" = "yes"; then
358 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
360 AC_MSG_RESULT($ac_sectionLDflags)
363 # Set linker optimization flags.
364 if test x"$with_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then
365 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
368 AC_SUBST(SECTION_LDFLAGS)
369 AC_SUBST(OPT_LDFLAGS)
374 dnl Check to see if the (math function) argument passed is
375 dnl declared when using the c++ compiler
376 dnl ASSUMES argument is a math function with ONE parameter
378 dnl GLIBCPP_CHECK_MATH_DECL_1
379 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
380 AC_MSG_CHECKING([for $1 declaration])
381 if test x${glibcpp_cv_func_$1_use+set} != xset; then
382 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
385 AC_TRY_COMPILE([#include <math.h>
391 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
395 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
399 dnl Check to see if the (math function) argument passed is
400 dnl 1) declared when using the c++ compiler
401 dnl 2) has "C" linkage
402 dnl 3) if not, see if 1) and 2) for argument prepended with '_'
404 dnl Define HAVE_CARGF etc if "cargf" is declared and links
406 dnl argument 1 is name of function to check
408 dnl ASSUMES argument is a math function with ONE parameter
410 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
411 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
412 GLIBCPP_CHECK_MATH_DECL_1($1)
413 if test x$glibcpp_cv_func_$1_use = x"yes"; then
416 GLIBCPP_CHECK_MATH_DECL_1(_$1)
417 if test x$glibcpp_cv_func__$1_use = x"yes"; then
425 dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
426 dnl of functions at once. It's an all-or-nothing check -- either
427 dnl HAVE_XYZ is defined for each of the functions, or for none of them.
428 dnl Doing it this way saves significant configure time.
429 AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
430 AC_MSG_CHECKING([for $1 functions])
431 AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
434 AC_TRY_COMPILE([#include <math.h>],
435 [ `for x in $3; do echo "$x (0);"; done` ],
436 [glibcpp_cv_func_$2_use=yes],
437 [glibcpp_cv_func_$2_use=no])
439 AC_MSG_RESULT($glibcpp_cv_func_$2_use)
440 if test x$glibcpp_cv_func_$2_use = x"yes"; then
446 dnl Check to see if the (math function) argument passed is
447 dnl declared when using the c++ compiler
448 dnl ASSUMES argument is a math function with TWO parameters
450 dnl GLIBCPP_CHECK_MATH_DECL_2
451 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
452 AC_MSG_CHECKING([for $1 declaration])
453 if test x${glibcpp_cv_func_$1_use+set} != xset; then
454 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
457 AC_TRY_COMPILE([#include <math.h>],
459 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
463 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
467 dnl Check to see if the (math function) argument passed is
468 dnl 1) declared when using the c++ compiler
469 dnl 2) has "C" linkage
471 dnl Define HAVE_CARGF etc if "cargf" is declared and links
473 dnl argument 1 is name of function to check
475 dnl ASSUMES argument is a math function with TWO parameters
477 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
478 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
479 GLIBCPP_CHECK_MATH_DECL_2($1)
480 if test x$glibcpp_cv_func_$1_use = x"yes"; then
483 GLIBCPP_CHECK_MATH_DECL_2(_$1)
484 if test x$glibcpp_cv_func__$1_use = x"yes"; then
492 dnl Check to see if the (math function) argument passed is
493 dnl declared when using the c++ compiler
494 dnl ASSUMES argument is a math function with THREE parameters
496 dnl GLIBCPP_CHECK_MATH_DECL_3
497 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
498 AC_MSG_CHECKING([for $1 declaration])
499 if test x${glibcpp_cv_func_$1_use+set} != xset; then
500 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
503 AC_TRY_COMPILE([#include <math.h>],
505 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
509 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
513 dnl Check to see if the (math function) argument passed is
514 dnl 1) declared when using the c++ compiler
515 dnl 2) has "C" linkage
517 dnl Define HAVE_CARGF etc if "cargf" is declared and links
519 dnl argument 1 is name of function to check
521 dnl ASSUMES argument is a math function with THREE parameters
523 dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
524 AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
525 GLIBCPP_CHECK_MATH_DECL_3($1)
526 if test x$glibcpp_cv_func_$1_use = x"yes"; then
529 GLIBCPP_CHECK_MATH_DECL_3(_$1)
530 if test x$glibcpp_cv_func__$1_use = x"yes"; then
538 dnl Check to see if the (stdlib function) argument passed is
539 dnl 1) declared when using the c++ compiler
540 dnl 2) has "C" linkage
542 dnl argument 1 is name of function to check
544 dnl ASSUMES argument is a math function with TWO parameters
546 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
547 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
548 AC_MSG_CHECKING([for $1 declaration])
549 if test x${glibcpp_cv_func_$1_use+set} != xset; then
550 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
553 AC_TRY_COMPILE([#include <stdlib.h>],
555 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
559 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
560 if test x$glibcpp_cv_func_$1_use = x"yes"; then
567 dnl Check to see if the (stdlib function) argument passed is
568 dnl 1) declared when using the c++ compiler
569 dnl 2) has "C" linkage
571 dnl argument 1 is name of function to check
573 dnl ASSUMES argument is a function with THREE parameters
575 dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3
576 AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3, [
577 AC_MSG_CHECKING([for $1 declaration])
578 if test x${glibcpp_cv_func_$1_use+set} != xset; then
579 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
582 AC_TRY_COMPILE([#include <stdlib.h>],
584 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
588 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
589 if test x$glibcpp_cv_func_$1_use = x"yes"; then
595 dnl Check to see if the (unistd function) argument passed is
596 dnl 1) declared when using the c++ compiler
597 dnl 2) has "C" linkage
599 dnl argument 1 is name of function to check
601 dnl ASSUMES argument is a function with ONE parameter
603 dnl GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1
604 AC_DEFUN(GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1, [
605 AC_MSG_CHECKING([for $1 declaration])
606 if test x${glibcpp_cv_func_$1_use+set} != xset; then
607 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
610 AC_TRY_COMPILE([#include <unistd.h>],
612 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
616 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
617 if test x$glibcpp_cv_func_$1_use = x"yes"; then
623 dnl Because the builtins are picky picky picky about the arguments they take,
624 dnl do an explict linkage tests here.
625 dnl Check to see if the (math function) argument passed is
626 dnl 1) declared when using the c++ compiler
627 dnl 2) has "C" linkage
629 dnl Define HAVE_CARGF etc if "cargf" is declared and links
631 dnl argument 1 is name of function to check
633 dnl ASSUMES argument is a math function with ONE parameter
635 dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
636 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
637 AC_MSG_CHECKING([for $1 declaration])
638 if test x${glibcpp_cv_func_$1_use+set} != xset; then
639 AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
642 AC_TRY_COMPILE([#include <math.h>],
644 [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
648 AC_MSG_RESULT($glibcpp_cv_func_$1_use)
649 if test x$glibcpp_cv_func_$1_use = x"yes"; then
650 AC_MSG_CHECKING([for $1 linkage])
651 if test x${glibcpp_cv_func_$1_link+set} != xset; then
652 AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
653 AC_TRY_LINK([#include <math.h>],
655 [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
658 AC_MSG_RESULT($glibcpp_cv_func_$1_link)
659 if test x$glibcpp_cv_func_$1_link = x"yes"; then
660 ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
661 AC_DEFINE_UNQUOTED(${ac_tr_func})
668 dnl Check to see what builtin math functions are supported
670 dnl check for __builtin_abs
671 dnl check for __builtin_fabsf
672 dnl check for __builtin_fabs
673 dnl check for __builtin_fabl
674 dnl check for __builtin_labs
675 dnl check for __builtin_sqrtf
676 dnl check for __builtin_sqrtl
677 dnl check for __builtin_sqrt
678 dnl check for __builtin_sinf
679 dnl check for __builtin_sin
680 dnl check for __builtin_sinl
681 dnl check for __builtin_cosf
682 dnl check for __builtin_cos
683 dnl check for __builtin_cosl
685 dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
686 AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
687 dnl Test for builtin math functions.
688 dnl These are made in gcc/c-common.c
689 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
690 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
691 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
692 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
693 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
695 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
696 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
697 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
699 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
700 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
701 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
703 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
704 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
705 GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
707 dnl There is, without a doubt, a more elegant way to have these
708 dnl names exported so that they won't be stripped out of acconfig.h by
709 dnl autoheader. I leave this as an exercise to somebody less frustrated
710 dnl than I.... please email the libstdc++ list if you can figure out a
711 dnl more elegant approach (see autoconf/acgen.m4 and specifically
712 dnl AC_CHECK_FUNC for things to steal.)
714 if test x$dummyvar = x"yes"; then
715 AC_DEFINE(HAVE___BUILTIN_ABS)
716 AC_DEFINE(HAVE___BUILTIN_LABS)
717 AC_DEFINE(HAVE___BUILTIN_COS)
718 AC_DEFINE(HAVE___BUILTIN_COSF)
719 AC_DEFINE(HAVE___BUILTIN_COSL)
720 AC_DEFINE(HAVE___BUILTIN_FABS)
721 AC_DEFINE(HAVE___BUILTIN_FABSF)
722 AC_DEFINE(HAVE___BUILTIN_FABSL)
723 AC_DEFINE(HAVE___BUILTIN_SIN)
724 AC_DEFINE(HAVE___BUILTIN_SINF)
725 AC_DEFINE(HAVE___BUILTIN_SINL)
726 AC_DEFINE(HAVE___BUILTIN_SQRT)
727 AC_DEFINE(HAVE___BUILTIN_SQRTF)
728 AC_DEFINE(HAVE___BUILTIN_SQRTL)
733 dnl Check to see what the underlying c library is like
734 dnl These checks need to do two things:
735 dnl 1) make sure the name is declared when using the c++ compiler
736 dnl 2) make sure the name has "C" linkage
737 dnl This might seem like overkill but experience has shown that it's not...
739 dnl Define HAVE_STRTOLD if "strtold" is declared and links
740 dnl Define HAVE_STRTOF if "strtof" is declared and links
741 dnl Define HAVE_DRAND48 if "drand48" is declared and links
743 dnl GLIBCPP_CHECK_STDLIB_SUPPORT
744 AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
745 ac_test_CXXFLAGS="${CXXFLAGS+set}"
746 ac_save_CXXFLAGS="$CXXFLAGS"
747 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
749 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
750 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
751 AC_CHECK_FUNCS(drand48)
753 CXXFLAGS="$ac_save_CXXFLAGS"
757 dnl Check to see what the underlying c library is like
758 dnl These checks need to do two things:
759 dnl 1) make sure the name is declared when using the c++ compiler
760 dnl 2) make sure the name has "C" linkage
761 dnl This might seem like overkill but experience has shown that it's not...
763 dnl Define HAVE_ISATTY if "isatty" is declared and links
765 dnl GLIBCPP_CHECK_UNISTD_SUPPORT
766 AC_DEFUN(GLIBCPP_CHECK_UNISTD_SUPPORT, [
767 ac_test_CXXFLAGS="${CXXFLAGS+set}"
768 ac_save_CXXFLAGS="$CXXFLAGS"
769 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
771 GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1(isatty)
773 CXXFLAGS="$ac_save_CXXFLAGS"
777 dnl Check to see what the underlying c library or math library is like.
778 dnl These checks need to do two things:
779 dnl 1) make sure the name is declared when using the c++ compiler
780 dnl 2) make sure the name has "C" linkage
781 dnl This might seem like overkill but experience has shown that it's not...
783 dnl Define HAVE_CARGF etc if "cargf" is found.
785 dnl GLIBCPP_CHECK_MATH_SUPPORT
786 AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
787 ac_test_CXXFLAGS="${CXXFLAGS+set}"
788 ac_save_CXXFLAGS="$CXXFLAGS"
789 CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
792 AC_CHECK_LIB(m, sin, libm="-lm")
796 dnl Check to see if certain C math functions exist.
797 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
798 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
799 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
800 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
801 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
802 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
803 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
804 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
806 dnl Check to see if basic C math functions have float versions.
807 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
812 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
815 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
816 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
817 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
818 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
819 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
820 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
821 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
822 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
823 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
824 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
825 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
826 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
827 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
828 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
829 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
830 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
832 dnl Check to see if basic C math functions have long double versions.
833 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
838 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
841 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
842 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
843 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
844 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
845 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
846 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
847 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
848 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
849 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
850 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
851 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
852 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
853 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
854 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
855 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
856 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
857 GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
859 dnl Some runtimes have these functions with a preceding underscore. Please
860 dnl keep this sync'd with the one above. And if you add any new symbol,
861 dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
862 dnl Check to see if certain C math functions exist.
864 dnl Check to see if basic C math functions have float versions.
865 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
867 _acosf _asinf _atanf \
869 _coshf _sinhf _tanhf)
870 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
874 dnl Check to see if basic C math functions have long double versions.
875 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
877 _acosl _asinl _atanl \
879 _coshl _sinhl _tanhl)
880 GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
885 CXXFLAGS="$ac_save_CXXFLAGS"
890 dnl Check to see if there is native support for complex
892 dnl Don't compile bits in math/* if native support exits.
894 dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
896 dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
897 AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
898 dnl Check for complex versions of math functions of platform.
899 AC_CHECK_LIB(m, main)
900 AC_REPLACE_MATHFUNCS(nan copysignf)
902 dnl For __signbit to signbit conversions.
903 AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
904 AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
906 dnl Compile the long double complex functions only if the function
907 dnl provides the non-complex long double functions that are needed.
908 dnl Currently this includes copysignl, which should be
909 dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
910 if test x$ac_cv_func_copysignl = x"yes"; then
911 AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
914 AC_SUBST(LIBMATHOBJS)
918 dnl Check to see what architecture and operating system we are compiling
919 dnl for. Also, if architecture- or OS-specific flags are required for
920 dnl compilation, pick them up here.
922 dnl GLIBCPP_CHECK_TARGET
923 AC_DEFUN(GLIBCPP_CHECK_TARGET, [
924 . [$]{glibcpp_basedir}/configure.target
925 AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
926 AC_MSG_RESULT(OS config directory is $os_include_dir)
931 dnl Check to see if this target can enable the wchar_t parts of libstdc++.
932 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
933 dnl must have been previously checked.)
935 dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
936 dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
938 dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
939 AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
941 dnl Test wchar.h for mbstate_t, which is needed for char_traits and
942 dnl others even if wchar_t support is not on.
943 AC_MSG_CHECKING([for mbstate_t])
944 AC_TRY_COMPILE([#include <wchar.h>],
945 [mbstate_t teststate;],
946 have_mbstate_t=yes, have_mbstate_t=no)
947 AC_MSG_RESULT($have_mbstate_t)
948 if test x"$have_mbstate_t" = xyes; then
949 AC_DEFINE(HAVE_MBSTATE_T)
952 dnl Sanity check for existence of ISO C99 headers for extended encoding.
953 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
954 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
956 dnl Only continue checking if the ISO C99 headers exist and support is on.
957 if test x"$ac_has_wchar_h" = xyes &&
958 test x"$ac_has_wctype_h" = xyes &&
959 test x"$enable_c_mbchar" != xno; then
961 dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
962 dnl numeric_limits can instantiate type_traits<wchar_t>
963 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
964 AC_TRY_COMPILE([#include <wchar.h>],
965 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
966 has_wchar_minmax=yes, has_wchar_minmax=no)
967 AC_MSG_RESULT($has_wchar_minmax)
969 dnl Test wchar.h for WEOF, which is what we use to determine whether
970 dnl to specialize for char_traits<wchar_t> or not.
971 AC_MSG_CHECKING([for WEOF])
974 #include <stddef.h>],
976 has_weof=yes, has_weof=no)
977 AC_MSG_RESULT($has_weof)
979 dnl Tests for wide character functions used in char_traits<wchar_t>.
981 AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
984 dnl Checks for names injected into std:: by the c_std headers.
985 AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
986 fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
987 vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
988 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
989 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
990 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
993 AC_MSG_CHECKING([for ISO C99 wchar_t support])
994 if test x"$has_weof" = xyes &&
995 test x"$has_wchar_minmax" = xyes &&
996 test x"$ac_wfuncs" = xyes; then
997 ac_isoC99_wchar_t=yes
1001 AC_MSG_RESULT($ac_isoC99_wchar_t)
1003 dnl Use iconv for wchar_t to char conversions. As such, check for
1004 dnl X/Open Portability Guide, version 2 features (XPG2).
1005 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
1006 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
1008 dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
1009 AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
1010 ac_save_LIBS="$LIBS"
1011 LIBS="$LIBS $libiconv"
1013 AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
1014 ac_XPG2funcs=yes, ac_XPG2funcs=no)
1016 LIBS="$ac_save_LIBS"
1018 AC_MSG_CHECKING([for XPG2 wchar_t support])
1019 if test x"$ac_has_iconv_h" = xyes &&
1020 test x"$ac_has_langinfo_h" = xyes &&
1021 test x"$ac_XPG2funcs" = xyes; then
1026 AC_MSG_RESULT($ac_XPG2_wchar_t)
1028 dnl At the moment, only enable wchar_t specializations if all the
1029 dnl above support is present.
1030 AC_MSG_CHECKING([for enabled wchar_t specializations])
1031 if test x"$ac_isoC99_wchar_t" = xyes &&
1032 test x"$ac_XPG2_wchar_t" = xyes; then
1033 AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
1034 AC_MSG_RESULT("yes")
1039 dnl Wide characters disabled by the user.
1040 AC_MSG_WARN([wchar_t support disabled.])
1046 dnl Check for special debugging mode; not for production use.
1048 dnl GLIBCPP_ENABLE_DEBUG
1049 dnl --enable-debug sets '-ggdb3 -O0'.
1050 dnl --disable-debug sets '-g' and whatever optimization options the
1051 dnl compiler can handle.
1052 dnl + --enable-maintainer-mode automatically defaults this to on.
1053 dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
1054 dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
1055 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1056 dnl defaults to `no'.
1057 AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
1058 define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
1059 AC_ARG_ENABLE(debug,
1060 changequote(<<, >>)dnl
1061 << --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
1062 changequote([, ])dnl
1063 [case "${enableval}" in
1064 yes) enable_debug=yes ;;
1065 no) enable_debug=no ;;
1066 *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
1068 enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
1070 dnl Option parsed, now set things appropriately
1071 case "${enable_debug}" in
1073 DEBUG_FLAGS='-O0 -ggdb3'
1079 AC_SUBST(DEBUG_FLAGS)
1084 dnl Check for "unusual" flags to pass to the compiler while building.
1086 dnl GLIBCPP_ENABLE_CXX_FLAGS
1087 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1088 dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
1089 dnl Somehow this same set of flags must be passed when [re]building
1091 dnl --disable-cxx-flags passes nothing.
1092 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1093 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1094 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1095 dnl + Usage: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
1096 dnl If "default flags" is an empty string (or "none"), the effect is
1097 dnl the same as --disable or --enable=no.
1098 AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
1099 define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
1100 AC_ARG_ENABLE(cxx-flags,
1101 changequote(<<, >>)dnl
1102 << --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
1103 [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
1104 changequote([, ])dnl
1105 [case "x$enableval" in
1107 AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
1109 enable_cxx_flags='' ;;
1111 enable_cxx_flags="$enableval" ;;
1113 enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
1115 dnl Thinko on my part during design. This kludge is the workaround.
1116 if test "$enable_cxx_flags" = "none"; then
1117 enable_cxx_flags='';
1120 dnl Run through flags (either default or command-line) and set anything
1121 dnl extra (e.g., #defines) that must accompany particular g++ options.
1122 if test -n "$enable_cxx_flags"; then
1123 for f in $enable_cxx_flags; do
1127 *) # and we're trying to pass /what/ exactly?
1128 AC_MSG_ERROR([compiler flags start with a -]) ;;
1132 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1133 AC_SUBST(EXTRA_CXX_FLAGS)
1138 dnl Check for which locale library to use: gnu or generic.
1140 dnl GLIBCPP_ENABLE_CLOCALE
1141 dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
1142 dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
1144 dnl default is generic
1146 AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
1147 AC_MSG_CHECKING([for clocale to use])
1148 AC_ARG_ENABLE(clocale,
1149 [ --enable-clocale enable model for target locale package.
1150 --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
1152 if test x$enable_clocale = xno; then
1157 enable_clocale_flag=$enable_clocale
1159 dnl Probe for locale support if no specific model is specified.
1160 dnl Default to "generic"
1161 if test x$enable_clocale_flag = xno; then
1162 case x${target_os} in
1164 AC_EGREP_CPP([_GLIBCPP_ok], [
1165 #include <features.h>
1166 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1169 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1171 # Test for bugs early in glibc-2.2.x series
1172 if test x$enable_clocale_flag = xgnu; then
1174 #define _GNU_SOURCE 1
1177 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
1178 extern __typeof(newlocale) __newlocale;
1179 extern __typeof(duplocale) __duplocale;
1180 extern __typeof(strcoll_l) __strcoll_l;
1184 const char __one[] = "Äuglein Augmen";
1185 const char __two[] = "Äuglein";
1190 loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1191 loc_dup = __duplocale(loc);
1192 i = __strcoll_l(__one, __two, loc);
1193 j = __strcoll_l(__one, __two, loc_dup);
1197 [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1198 [enable_clocale_flag=generic])
1201 # ... at some point put __strxfrm_l tests in as well.
1204 enable_clocale_flag=generic
1209 dnl Deal with gettext issues.
1211 [ --enable-nls use Native Language Support (default)],
1215 dnl Set configure bits for specified locale package
1216 case x${enable_clocale_flag} in
1218 AC_MSG_RESULT(generic)
1220 CLOCALE_H=config/locale/generic/c_locale.h
1221 CLOCALE_CC=config/locale/generic/c_locale.cc
1222 CCODECVT_H=config/locale/generic/codecvt_specializations.h
1223 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1224 CCOLLATE_CC=config/locale/generic/collate_members.cc
1225 CCTYPE_CC=config/locale/generic/ctype_members.cc
1226 CMESSAGES_H=config/locale/generic/messages_members.h
1227 CMESSAGES_CC=config/locale/generic/messages_members.cc
1228 CMONEY_CC=config/locale/generic/monetary_members.cc
1229 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1230 CTIME_CC=config/locale/generic/time_members.cc
1231 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1236 # Declare intention to use gettext, and add support for specific
1238 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1241 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1242 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1243 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1246 # Export the build objects.
1247 for ling in $ALL_LINGUAS; do \
1248 glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
1249 glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
1251 AC_SUBST(glibcpp_MOFILES)
1252 AC_SUBST(glibcpp_POFILES)
1254 CLOCALE_H=config/locale/gnu/c_locale.h
1255 CLOCALE_CC=config/locale/gnu/c_locale.cc
1256 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1257 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
1258 CCOLLATE_CC=config/locale/gnu/collate_members.cc
1259 CCTYPE_CC=config/locale/gnu/ctype_members.cc
1260 CMESSAGES_H=config/locale/gnu/messages_members.h
1261 CMESSAGES_CC=config/locale/gnu/messages_members.cc
1262 CMONEY_CC=config/locale/gnu/monetary_members.cc
1263 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1264 CTIME_CC=config/locale/gnu/time_members.cc
1265 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
1268 AC_MSG_RESULT(generic)
1270 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1271 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1272 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1273 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1274 CCOLLATE_CC=config/locale/generic/collate_members.cc
1275 CCTYPE_CC=config/locale/generic/ctype_members.cc
1276 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1277 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1278 CMONEY_CC=config/locale/generic/monetary_members.cc
1279 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1280 CTIME_CC=config/locale/generic/time_members.cc
1281 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1284 echo "$enable_clocale is an unknown locale package" 1>&2
1289 # This is where the testsuite looks for locale catalogs, using the
1290 # -DLOCALEDIR define during testsuite compilation.
1291 glibcpp_localedir=${glibcpp_builddir}/po/share/locale
1292 AC_SUBST(glibcpp_localedir)
1294 # For the time being, transform ctype_noninline.h to ctype_members_char.cc
1295 # CCTYPE_CHAR_CC=config/${os_include_dir}/ctype_noninline.h
1299 AC_SUBST(CCODECVT_H)
1300 AC_SUBST(CMESSAGES_H)
1301 AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
1302 AC_LINK_FILES($CCODECVT_CC, src/codecvt_members.cc)
1303 AC_LINK_FILES($CCOLLATE_CC, src/collate_members.cc)
1304 # AC_LINK_FILES($CCTYPE_CHAR_CC, src/ctype_members_char.cc)
1305 AC_LINK_FILES($CCTYPE_CC, src/ctype_members.cc)
1306 AC_LINK_FILES($CMESSAGES_CC, src/messages_members.cc)
1307 AC_LINK_FILES($CMONEY_CC, src/monetary_members.cc)
1308 AC_LINK_FILES($CNUMERIC_CC, src/numeric_members.cc)
1309 AC_LINK_FILES($CTIME_CC, src/time_members.cc)
1310 AC_LINK_FILES($CLOCALE_INTERNAL_H, src/c++locale_internal.h)
1315 dnl Check for which I/O library to use: libio, or something specific.
1317 dnl GLIBCPP_ENABLE_CSTDIO
1318 dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
1320 dnl default is stdio
1322 AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
1323 AC_MSG_CHECKING([for cstdio to use])
1324 AC_ARG_ENABLE(cstdio,
1325 [ --enable-cstdio enable stdio for target io package.
1326 --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
1328 if test x$enable_cstdio = xno; then
1331 enable_cstdio=stdio)
1333 enable_cstdio_flag=$enable_cstdio
1335 dnl Check if a valid I/O package
1336 case x${enable_cstdio_flag} in
1338 CSTDIO_H=config/io/c_io_libio.h
1339 BASIC_FILE_H=config/io/basic_file_libio.h
1340 BASIC_FILE_CC=config/io/basic_file_libio.cc
1341 AC_MSG_RESULT(libio)
1343 # see if we are on a system with libio native (ie, linux)
1344 AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
1346 # Need to check and see what version of glibc is being used. If
1347 # it's not glibc-2.2 or higher, then we'll need to go ahead and
1348 # compile most of libio for linux systems.
1349 if test x$has_libio = x"yes"; then
1352 AC_MSG_CHECKING([for glibc version >= 2.2])
1353 AC_EGREP_CPP([ok], [
1354 #include <features.h>
1355 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1358 ], glibc_satisfactory=yes, glibc_satisfactory=no)
1359 AC_MSG_RESULT($glibc_satisfactory)
1363 # XXX at the moment, admit defeat and force the recompilation
1364 # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
1365 glibc_satisfactory=no
1367 if test x$glibc_satisfactory = x"yes"; then
1372 # bkoz XXX need to add checks to enable this
1373 # pme XXX here's a first pass at such a check
1374 if test x$enable_c_mbchar != xno; then
1382 # Using libio, but <libio.h> doesn't exist on the target system. . .
1384 # bkoz XXX need to add checks to enable this
1385 # pme XXX here's a first pass at such a check
1386 if test x$enable_c_mbchar != xno; then
1393 xstdio | x | xno | xnone | xyes)
1395 CSTDIO_H=config/io/c_io_stdio.h
1396 BASIC_FILE_H=config/io/basic_file_stdio.h
1397 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1398 AC_MSG_RESULT(stdio)
1400 # We're not using stdio.
1405 echo "$enable_cstdio is an unknown io package" 1>&2
1410 AC_SUBST(BASIC_FILE_H)
1411 AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
1413 # 2000-08-04 bkoz hack
1414 CCODECVT_C=config/io/c_io_libio_codecvt.c
1415 AC_SUBST(CCODECVT_C)
1416 # 2000-08-04 bkoz hack
1418 AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
1419 test "$need_libio" = yes || test "$need_wlibio" = yes)
1420 AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
1421 AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
1422 if test "$need_libio" = yes || test "$need_wlibio" = yes; then
1423 libio_la=../libio/libio.la
1432 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1433 dnl We must stage the required headers so that they will be installed
1434 dnl with the library (unlike libgcc, the STL implementation is provided
1435 dnl solely within headers). Since we must not inject random user-space
1436 dnl macro names into user-provided C++ code, we first stage into <file>-in
1437 dnl and process to <file> with an output command. The reason for a two-
1438 dnl stage process here is to correctly handle $srcdir!=$objdir without
1439 dnl having to write complex code (the sed commands to clean the macro
1440 dnl namespace are complex and fragile enough as it is). We must also
1441 dnl add a relative path so that -I- is supported properly.
1443 AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
1444 AC_MSG_CHECKING([for thread model used by GCC])
1445 target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
1446 AC_MSG_RESULT([$target_thread_file])
1448 if test $target_thread_file != single; then
1449 AC_DEFINE(HAVE_GTHR_DEFAULT)
1450 AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
1453 glibcpp_thread_h=gthr-$target_thread_file.h
1454 AC_SUBST(glibcpp_thread_h)
1459 dnl Check for exception handling support. If an explicit enable/disable
1460 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1461 dnl target may or may not support call frame exceptions.
1463 dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
1464 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1465 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1467 dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
1469 AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
1470 AC_MSG_CHECKING([for exception model to use])
1473 AC_ARG_ENABLE(sjlj-exceptions,
1474 [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
1476 [dnl Botheration. Now we've got to detect the exception model.
1477 dnl Link tests against libgcc.a are problematic since -- at least
1478 dnl as of this writing -- we've not been given proper -L bits for
1479 dnl single-tree newlib and libgloss.
1481 dnl This is what AC_TRY_COMPILE would do if it didn't delete the
1482 dnl conftest files before we got a change to grep them first.
1483 cat > conftest.$ac_ext << EOF
1484 [#]line __oline__ "configure"
1493 old_CXXFLAGS="$CXXFLAGS"
1495 if AC_TRY_EVAL(ac_compile); then
1496 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1497 enable_sjlj_exceptions=yes
1498 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1499 enable_sjlj_exceptions=no
1502 CXXFLAGS="$old_CXXFLAGS"
1504 if test x$enable_sjlj_exceptions = xyes; then
1505 AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
1506 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1507 ac_exception_model_name=sjlj
1508 elif test x$enable_sjlj_exceptions = xno; then
1509 ac_exception_model_name="call frame"
1511 AC_MSG_ERROR([unable to detect exception model])
1514 AC_MSG_RESULT($ac_exception_model_name)
1519 dnl Check for libunwind exception handling support. If enabled then
1520 dnl we assume that the _Unwind_* functions that make up the Unwind ABI
1521 dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by
1522 dnl libunwind instead of libgcc and that libstdc++ has a dependency
1523 dnl on libunwind as well as libgcc.
1525 dnl GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
1526 dnl --enable-libunwind-exceptions forces the use of libunwind.
1527 dnl --disable-libunwind-exceptions assumes there is no libunwind.
1529 dnl Define _GLIBCPP_LIBUNWIND_EXCEPTIONS if requested.
1531 AC_DEFUN(GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS, [
1532 AC_MSG_CHECKING([for use of libunwind])
1533 AC_ARG_ENABLE(libunwind-exceptions,
1534 [ --enable-libunwind-exceptions force use of libunwind for exceptions],
1535 use_libunwind_exceptions=$enableval,
1536 use_libunwind_exceptions=no)
1537 AC_MSG_RESULT($use_libunwind_exceptions)
1538 dnl Option parsed, now set things appropriately
1539 if test x"$use_libunwind_exceptions" = xyes; then
1540 LIBUNWIND_FLAG="-lunwind"
1544 AC_SUBST(LIBUNWIND_FLAG)
1548 dnl Check for ISO/IEC 9899:1999 "C99" support.
1550 dnl GLIBCPP_ENABLE_C99
1551 dnl --enable-c99 defines _GLIBCPP_USE_C99
1552 dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
1553 dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
1554 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1555 dnl defaults to `no'.
1556 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
1558 dnl GLIBCPP_ENABLE_C99
1559 AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
1560 define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
1563 changequote(<<, >>)dnl
1564 <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
1565 changequote([, ])dnl
1566 [case "$enableval" in
1567 yes) enable_c99=yes ;;
1568 no) enable_c99=no ;;
1569 *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
1571 enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
1576 # Check for the existence of <math.h> functions used if C99 is enabled.
1578 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
1579 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
1580 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
1581 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
1582 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
1583 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
1584 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
1585 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
1586 AC_TRY_COMPILE([#include <math.h>],
1587 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
1588 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
1589 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
1590 AC_TRY_COMPILE([#include <math.h>],
1591 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
1592 AC_TRY_COMPILE([#include <math.h>],
1593 [isunordered(0.0,0.0);],, [ac_c99_math=no])
1594 AC_MSG_RESULT($ac_c99_math)
1596 # Check for the existence in <stdio.h> of vscanf, et. al.
1598 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1599 AC_TRY_COMPILE([#include <stdio.h>],
1600 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
1601 AC_TRY_COMPILE([#include <stdio.h>
1603 void foo(char* fmt, ...)
1604 {va_list args; va_start(args, fmt);
1605 vfscanf(stderr, "%i", args);}],
1606 [],, [ac_c99_stdio=no])
1607 AC_TRY_COMPILE([#include <stdio.h>
1609 void foo(char* fmt, ...)
1610 {va_list args; va_start(args, fmt);
1611 vscanf("%i", args);}],
1612 [],, [ac_c99_stdio=no])
1613 AC_TRY_COMPILE([#include <stdio.h>
1615 void foo(char* fmt, ...)
1616 {va_list args; va_start(args, fmt);
1617 vsnprintf(fmt, 0, "%i", args);}],
1618 [],, [ac_c99_stdio=no])
1619 AC_TRY_COMPILE([#include <stdio.h>
1621 void foo(char* fmt, ...)
1622 {va_list args; va_start(args, fmt);
1623 vsscanf(fmt, "%i", args);}],
1624 [],, [ac_c99_stdio=no])
1625 AC_MSG_RESULT($ac_c99_stdio)
1627 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1629 AC_MSG_CHECKING([for lldiv_t declaration])
1630 AC_CACHE_VAL(ac_c99_lldiv_t, [
1631 AC_TRY_COMPILE([#include <stdlib.h>],
1633 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
1635 AC_MSG_RESULT($ac_c99_lldiv_t)
1637 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1638 AC_TRY_COMPILE([#include <stdlib.h>],
1639 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
1640 AC_TRY_COMPILE([#include <stdlib.h>],
1641 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
1642 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
1643 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
1644 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
1645 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
1646 if test x"$ac_c99_lldiv_t" = x"no"; then
1649 AC_MSG_RESULT($ac_c99_stdlib)
1651 # Check for the existence of <wchar.h> functions used if C99 is enabled.
1652 # XXX the wchar.h checks should be rolled into the general C99 bits.
1654 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
1655 AC_TRY_COMPILE([#include <wchar.h>],
1656 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
1657 AC_TRY_COMPILE([#include <wchar.h>],
1658 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
1659 AC_TRY_COMPILE([#include <wchar.h>],
1660 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
1661 AC_MSG_RESULT($ac_c99_wchar)
1663 AC_MSG_CHECKING([for enabled ISO C99 support])
1664 if test x"$ac_c99_math" = x"no" ||
1665 test x"$ac_c99_stdio" = x"no" ||
1666 test x"$ac_c99_stdlib" = x"no" ||
1667 test x"$ac_c99_wchar" = x"no"; then
1670 AC_MSG_RESULT($enable_c99)
1672 # Option parsed, now set things appropriately
1673 if test x"$enable_c99" = x"yes"; then
1674 AC_DEFINE(_GLIBCPP_USE_C99)
1682 dnl Check for template specializations for the 'long long' type extension.
1683 dnl The result determines only whether 'long long' I/O is enabled; things
1684 dnl like numeric_limits<> specializations are always available.
1686 dnl GLIBCPP_ENABLE_LONG_LONG
1687 dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
1688 dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
1689 dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
1690 dnl Where DEFAULT is either `yes' or `no'. If omitted, it
1691 dnl defaults to `no'.
1692 dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
1694 dnl GLIBCPP_ENABLE_LONG_LONG
1695 AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
1696 define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
1698 AC_ARG_ENABLE(long-long,
1699 changequote(<<, >>)dnl
1700 <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
1701 changequote([, ])dnl
1702 [case "$enableval" in
1703 yes) enable_long_long=yes ;;
1704 no) enable_long_long=no ;;
1705 *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
1707 enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)dnl
1712 AC_MSG_CHECKING([for enabled long long I/O support])
1713 # iostreams require strtoll, strtoull to compile
1714 AC_TRY_COMPILE([#include <stdlib.h>],
1715 [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
1716 AC_TRY_COMPILE([#include <stdlib.h>],
1717 [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
1719 # Option parsed, now set things appropriately
1720 if test x"$enable_long_long" = xyes; then
1721 AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
1723 AC_MSG_RESULT($enable_long_long)
1730 dnl Check for what kind of C headers to use.
1732 dnl GLIBCPP_ENABLE_CHEADERS
1733 dnl --enable-cheaders= [does stuff].
1734 dnl --disable-cheaders [does not do anything, really].
1735 dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
1736 dnl Where DEFAULT is either `c' or `c_std'.
1737 dnl If ommitted, it defaults to `c_std'.
1738 AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
1739 define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
1740 AC_MSG_CHECKING([for c header strategy to use])
1741 AC_ARG_ENABLE(cheaders,
1742 changequote(<<, >>)dnl
1743 << --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
1745 [case "$enableval" in
1750 enable_cheaders=c_std
1752 *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
1755 enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
1756 AC_MSG_RESULT($enable_cheaders)
1758 dnl Option parsed, now set things appropriately
1759 case "$enable_cheaders" in
1761 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
1764 C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
1768 AC_SUBST(C_INCLUDE_DIR)
1769 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C, test "$enable_cheaders" = c)
1770 AM_CONDITIONAL(GLIBCPP_C_HEADERS_C_STD, test "$enable_cheaders" = c_std)
1771 AM_CONDITIONAL(GLIBCPP_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes)
1776 dnl Check for wide character support. Has the same effect as the option
1777 dnl in gcc's configure, but in a form that autoconf can mess with.
1779 dnl GLIBCPP_ENABLE_C_MBCHAR
1780 dnl --enable-c-mbchar requests all the wchar_t stuff.
1781 dnl --disable-c-mbchar doesn't.
1782 dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
1783 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
1784 dnl defaults to `no'.
1785 AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
1786 define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
1787 AC_ARG_ENABLE(c-mbchar,
1788 changequote(<<, >>)dnl
1789 << --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
1790 changequote([, ])dnl
1791 [case "$enableval" in
1792 yes) enable_c_mbchar=yes ;;
1793 no) enable_c_mbchar=no ;;
1794 *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
1796 enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
1797 dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1802 dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
1804 dnl TOPLEVEL_INCLUDES
1805 dnl LIBMATH_INCLUDES
1806 dnl LIBSUPCXX_INCLUDES
1809 dnl GLIBCPP_EXPORT_INCLUDES
1810 AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
1811 # Root level of the build directory include sources.
1812 GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
1814 # Passed down for canadian crosses.
1815 if test x"$CANADIAN" = xyes; then
1816 TOPLEVEL_INCLUDES='-I$(includedir)'
1819 LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
1821 LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
1823 if test x"$need_libio" = xyes; then
1824 LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
1825 AC_SUBST(LIBIO_INCLUDES)
1828 # Now, export this to all the little Makefiles....
1829 AC_SUBST(GLIBCPP_INCLUDES)
1830 AC_SUBST(TOPLEVEL_INCLUDES)
1831 AC_SUBST(LIBMATH_INCLUDES)
1832 AC_SUBST(LIBSUPCXX_INCLUDES)
1837 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
1839 AC_DEFUN(GLIBCPP_EXPORT_FLAGS, [
1840 # Optimization flags that are probably a good idea for thrill-seekers. Just
1841 # uncomment the lines below and make, everything else is ready to go...
1842 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
1844 AC_SUBST(OPTIMIZE_CXXFLAGS)
1846 WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
1847 AC_SUBST(WARN_FLAGS)
1851 dnl GLIBCPP_EXPORT_INSTALL_INFO
1852 dnl calculates gxx_install_dir
1853 dnl exports glibcpp_toolexecdir
1854 dnl exports glibcpp_toolexeclibdir
1855 dnl exports glibcpp_prefixdir
1857 dnl Assumes cross_compiling bits already done, and with_cross_host in
1860 dnl GLIBCPP_EXPORT_INSTALL_INFO
1861 AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
1862 # Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
1863 # exported correctly in GLIBCPP_CONFIGURE.
1864 glibcpp_toolexecdir=no
1865 glibcpp_toolexeclibdir=no
1866 glibcpp_prefixdir=${prefix}
1868 # Process the option --with-gxx-include-dir=<path to include-files directory>
1869 AC_MSG_CHECKING([for --with-gxx-include-dir])
1870 AC_ARG_WITH(gxx-include-dir,
1871 [ --with-gxx-include-dir the installation directory for include files],
1872 [case "${withval}" in
1874 AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
1881 gxx_include_dir=${withval}
1883 esac], [gxx_include_dir=no])
1884 AC_MSG_RESULT($gxx_include_dir)
1886 # Process the option "--enable-version-specific-runtime-libs"
1887 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
1888 AC_ARG_ENABLE(version-specific-runtime-libs,
1889 [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
1890 [case "$enableval" in
1891 yes) version_specific_libs=yes ;;
1892 no) version_specific_libs=no ;;
1893 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
1895 version_specific_libs=no)dnl
1896 # Option set, now we can test it.
1897 AC_MSG_RESULT($version_specific_libs)
1899 # Default case for install directory for include files.
1900 if test $version_specific_libs = no && test $gxx_include_dir = no; then
1901 gxx_include_dir='$(prefix)'/include/c++/${gcc_version}
1904 # Version-specific runtime libs processing.
1905 if test $version_specific_libs = yes; then
1906 # Need the gcc compiler version to know where to install libraries
1907 # and header files if --enable-version-specific-runtime-libs option
1909 if test x"$gxx_include_dir" = x"no"; then
1910 gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++
1912 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1913 glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
1916 # Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
1917 # Install a library built with a cross compiler in tooldir, not libdir.
1918 if test x"$glibcpp_toolexecdir" = x"no"; then
1919 if test -n "$with_cross_host" &&
1920 test x"$with_cross_host" != x"no"; then
1921 glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
1922 glibcpp_toolexeclibdir='$(toolexecdir)/lib$(MULTISUBDIR)'
1924 glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
1925 glibcpp_toolexeclibdir='$(libdir)$(MULTISUBDIR)'
1929 AC_MSG_CHECKING([for install location])
1930 AC_MSG_RESULT($gxx_include_dir)
1932 AC_SUBST(glibcpp_prefixdir)
1933 AC_SUBST(gxx_include_dir)
1934 AC_SUBST(glibcpp_toolexecdir)
1935 AC_SUBST(glibcpp_toolexeclibdir)
1939 # Check for functions in math library.
1940 # Ulrich Drepper <drepper@cygnus.com>, 1998.
1942 # This file can be copied and used freely without restrictions. It can
1943 # be used in projects which are not available under the GNU Public License
1944 # but which still want to provide support for the GNU gettext functionality.
1945 # Please note that the actual code is *not* freely available.
1949 dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
1950 AC_DEFUN(AC_REPLACE_MATHFUNCS,
1951 [AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
1954 dnl This macro searches for a GNU version of make. If a match is found, the
1955 dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
1956 dnl set to "#". This is useful for including a special features in a Makefile,
1957 dnl which cannot be handled by other versions of make. The variable
1958 dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
1959 dnl the empty string otherwise.
1961 dnl Here is an example of its use:
1963 dnl Makefile.in might contain:
1965 dnl # A failsafe way of putting a dependency rule into a makefile
1967 dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
1969 dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
1970 dnl @ifGNUmake@ include $(DEPEND)
1971 dnl @ifGNUmake@ endif
1973 dnl Then configure.in would normally contain:
1975 dnl CHECK_GNU_MAKE()
1976 dnl AC_OUTPUT(Makefile)
1978 dnl Then perhaps to cause gnu make to override any other make, we could do
1979 dnl something like this (note that GNU make always looks for GNUmakefile first):
1981 dnl if ! test x$_cv_gnu_make_command = x ; then
1982 dnl mv Makefile GNUmakefile
1983 dnl echo .DEFAULT: > Makefile ;
1984 dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
1987 dnl Then, if any (well almost any) other make is called, and GNU make also
1988 dnl exists, then the other make wraps the GNU make.
1990 dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
1991 dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
1993 dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
1994 dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
1995 dnl #### conditional's subshell (" --version" is not a command), using a
1996 dnl #### different option to grep(1).
1998 dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
1999 dnl #### ${MAKE:-make}).
2002 GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
2003 _cv_gnu_make_command='' ;
2004 dnl Search all the common names for GNU make
2005 for a in "${MAKE-make}" make gmake gnumake ; do
2006 if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
2008 _cv_gnu_make_command=$a ;
2013 dnl If there was a GNU version, then set @ifGNUmake@ to the empty
2014 dnl string, '#' otherwise
2015 if test "x$_cv_gnu_make_command" != "x" ; then
2024 dnl Check for headers for, and arguments to, the setrlimit() function.
2025 dnl Used only in testsuite_hooks.h.
2026 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
2027 AC_TRY_COMPILE([#include <unistd.h>
2028 #include <sys/time.h>
2029 #include <sys/resource.h>
2030 ], [ int f = RLIMIT_$1 ; ],
2031 [glibcpp_mresult=1], [glibcpp_mresult=0])
2032 AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
2033 [Only used in build directory testsuite_hooks.h.])
2035 AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
2036 setrlimit_have_headers=yes
2037 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
2039 setrlimit_have_headers=no)
2040 # If don't have the headers, then we can't run the tests now, and we
2041 # won't be seeing any of these during testsuite compilation.
2042 if test $setrlimit_have_headers = yes; then
2043 # Can't do these in a loop, else the resulting syntax is wrong.
2044 GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
2045 GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
2046 GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
2047 GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
2049 # Check for rlimit, setrlimit.
2050 AC_CACHE_VAL(ac_setrlimit, [
2051 AC_TRY_COMPILE([#include <unistd.h>
2052 #include <sys/time.h>
2053 #include <sys/resource.h>
2055 [ struct rlimit r; setrlimit(0, &r);],
2056 [ac_setrlimit=yes], [ac_setrlimit=no])
2060 AC_MSG_CHECKING([for testsuite memory limit support])
2061 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
2063 AC_DEFINE(_GLIBCPP_MEM_LIMITS)
2067 AC_MSG_RESULT($ac_mem_limits)
2072 dnl Does any necessary configuration of the testsuite directory. Generates
2073 dnl the testsuite_hooks.h header.
2075 dnl GLIBCPP_CONFIGURE_TESTSUITE [no args]
2076 AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
2077 GLIBCPP_CHECK_SETRLIMIT
2079 # Look for setenv, so that extended locale tests can be performed.
2080 GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
2082 # Export file names for ABI checking.
2083 baseline_file="${glibcpp_srcdir}/config/abi/${abi_baseline_triplet}/baseline_symbols.txt"
2084 AC_SUBST(baseline_file)
2086 # Don't do ABI checking unless native.
2087 AM_CONDITIONAL(GLIBCPP_BUILD_ABI_CHECK,
2088 test x"$build" = x"$host" && test -z "$with_cross_host")
2092 sinclude(../libtool.m4)
2093 dnl The lines below arrange for aclocal not to bring an installed
2094 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
2095 dnl add a definition of LIBTOOL to Makefile.in.
2096 ifelse(,,,[AC_SUBST(LIBTOOL)
2097 AC_DEFUN([AM_PROG_LIBTOOL])
2098 AC_DEFUN([AC_LIBTOOL_DLOPEN])
2099 AC_DEFUN([AC_PROG_LD])
2103 # Check whether LC_MESSAGES is available in <locale.h>.
2104 # Ulrich Drepper <drepper@cygnus.com>, 1995.
2106 # This file file be copied and used freely without restrictions. It can
2107 # be used in projects which are not available under the GNU Public License
2108 # but which still want to provide support for the GNU gettext functionality.
2109 # Please note that the actual code is *not* freely available.
2113 AC_DEFUN(AC_LC_MESSAGES, [
2114 AC_CHECK_HEADER(locale.h, [
2115 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
2116 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
2117 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
2118 if test $ac_cv_val_LC_MESSAGES = yes; then
2119 AC_DEFINE(HAVE_LC_MESSAGES)
2126 dnl Check for whether the Boost-derived checks should be turned on.
2128 dnl GLIBCPP_ENABLE_CONCEPT_CHECKS
2129 dnl --enable-concept-checks turns them on.
2130 dnl --disable-concept-checks leaves them off.
2131 dnl + Usage: GLIBCPP_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2132 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2133 dnl defaults to `no'.
2134 AC_DEFUN(GLIBCPP_ENABLE_CONCEPT_CHECKS, [dnl
2135 define([GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
2136 AC_ARG_ENABLE(concept-checks,
2137 changequote(<<, >>)dnl
2138 << --enable-concept-checks use Boost-derived template checks [default=>>GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT],
2139 changequote([, ])dnl
2140 [case "$enableval" in
2141 yes) enable_concept_checks=yes ;;
2142 no) enable_concept_checks=no ;;
2143 *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
2145 enable_concept_checks=GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
2146 dnl Option parsed, now set things appropriately
2147 if test x"$enable_concept_checks" = xyes; then
2148 AC_DEFINE(_GLIBCPP_CONCEPT_CHECKS)
2154 dnl Add version tags to symbols in shared library (or not), additionally
2155 dnl marking other symbols as private/local (or not).
2157 dnl GLIBCPP_ENABLE_SYMVERS
2158 dnl --enable-symvers=style adds a version script to the linker call when
2159 dnl creating the shared library. The choice of version script is
2160 dnl controlled by 'style'.
2161 dnl --disable-symvers does not.
2162 dnl + Usage: GLIBCPP_ENABLE_SYMVERS[(DEFAULT)]
2163 dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
2164 dnl defaults to `no'. Passing `yes' tries to choose a default style
2165 dnl based on linker characteristics. Passing 'no' disables versioning.
2166 AC_DEFUN(GLIBCPP_ENABLE_SYMVERS, [dnl
2167 define([GLIBCPP_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl
2168 AC_ARG_ENABLE(symvers,
2169 changequote(<<, >>)dnl
2170 << --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCPP_ENABLE_SYMVERS_DEFAULT],
2171 changequote([, ])dnl
2172 [case "$enableval" in
2173 yes) enable_symvers=yes ;;
2174 no) enable_symvers=no ;;
2175 # other names here, just as sanity checks
2176 #gnu|sun|etcetera) enable_symvers=$enableval ;;
2177 gnu) enable_symvers=$enableval ;;
2178 *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;;
2180 enable_symvers=GLIBCPP_ENABLE_SYMVERS_DEFAULT)dnl
2182 # If we never went through the GLIBCPP_CHECK_LINKER_FEATURES macro, then we
2183 # don't know enough about $LD to do tricks...
2184 if test x$enable_shared = xno ||
2186 test x$glibcpp_gnu_ld_version = x; then
2190 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
2191 if test $enable_symvers != no; then
2192 AC_MSG_CHECKING([for shared libgcc])
2193 ac_save_CFLAGS="$CFLAGS"
2195 AC_TRY_LINK(, [return 0], glibcpp_shared_libgcc=yes, glibcpp_shared_libgcc=no)
2196 CFLAGS="$ac_save_CFLAGS"
2197 AC_MSG_RESULT($glibcpp_shared_libgcc)
2200 # For GNU ld, we need at least this version. It's 2.12 in the same format
2201 # as the tested-for version. See GLIBCPP_CHECK_LINKER_FEATURES for more.
2202 glibcpp_min_gnu_ld_version=21200
2204 # Check to see if unspecified "yes" value can win, given results
2206 if test $enable_symvers = yes ; then
2207 if test $with_gnu_ld = yes &&
2208 test $glibcpp_shared_libgcc = yes ;
2210 if test $glibcpp_gnu_ld_version -ge $glibcpp_min_gnu_ld_version ; then
2213 ac_test_CFLAGS="${CFLAGS+set}"
2214 ac_save_CFLAGS="$CFLAGS"
2215 CFLAGS='-shared -Wl,--version-script,conftest.map'
2218 echo 'FOO { global: f[a-z]o; local: *; };' > conftest.map
2220 AC_TRY_LINK([int foo;],, enable_symvers=gnu)
2221 if test "$ac_test_CFLAGS" = set; then
2222 CFLAGS="$ac_save_CFLAGS"
2224 # this is the suspicious part
2235 dnl Everything parsed; figure out what file to use.
2236 case $enable_symvers in
2238 LINKER_MAP=config/linker-map.dummy
2241 LINKER_MAP=config/linker-map.gnu
2242 AC_DEFINE(_GLIBCPP_SYMVER)
2246 AC_LINK_FILES($LINKER_MAP, src/linker.map)
2247 AM_CONDITIONAL(GLIBCPP_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
2248 AC_MSG_CHECKING([versioning on shared library symbols])
2249 AC_MSG_RESULT($enable_symvers)