2 dnl GLIBCXX_CONDITIONAL (NAME, SHELL-TEST)
4 dnl Exactly like AM_CONDITIONAL, but delays evaluation of the test until the
5 dnl end of configure. This lets tested variables be reassigned, and the
6 dnl conditional will depend on the final state of the variable. For a simple
7 dnl example of why this is needed, see GLIBCXX_ENABLE_HOSTED.
9 m4_define([_m4_divert(glibcxx_diversion)], 8000)dnl
10 AC_DEFUN([GLIBCXX_CONDITIONAL], [dnl
11 m4_divert_text([glibcxx_diversion],dnl
12 AM_CONDITIONAL([$1],[$2])
15 AC_DEFUN([GLIBCXX_EVALUATE_CONDITIONALS], [m4_undivert([glibcxx_diversion])])dnl
19 dnl Check to see what architecture and operating system we are compiling
20 dnl for. Also, if architecture- or OS-specific flags are required for
21 dnl compilation, pick them up here.
23 AC_DEFUN([GLIBCXX_CHECK_HOST], [
24 . $glibcxx_srcdir/configure.host
25 AC_MSG_NOTICE([CPU config directory is $cpu_include_dir])
26 AC_MSG_NOTICE([OS config directory is $os_include_dir])
30 dnl Initialize the rest of the library configury. At this point we have
31 dnl variables like $host.
36 dnl glibcxx_builddir (absolute path)
37 dnl glibcxx_srcdir (absolute path)
38 dnl toplevel_builddir (absolute path)
39 dnl toplevel_srcdir (absolute path)
42 dnl with_target_subdir
44 dnl - the variables in GLIBCXX_CHECK_HOST / configure.host
45 dnl - default settings for all AM_CONFITIONAL test variables
46 dnl - lots of tools, like CC and CXX
48 AC_DEFUN([GLIBCXX_CONFIGURE], [
49 # Keep these sync'd with the list in Makefile.am. The first provides an
50 # expandable list at autoconf time; the second provides an expandable list
51 # (i.e., shell variable) at configure time.
52 m4_define([glibcxx_SUBDIRS],[include libsupc++ python src src/c++98 src/c++11 doc po testsuite])
53 SUBDIRS='glibcxx_SUBDIRS'
55 # These need to be absolute paths, yet at the same time need to
56 # canonicalize only relative paths, because then amd will not unmount
57 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
58 glibcxx_builddir=`${PWDCMD-pwd}`
60 [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;;
61 *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
63 toplevel_builddir=${glibcxx_builddir}/..
64 toplevel_srcdir=${glibcxx_srcdir}/..
65 AC_SUBST(glibcxx_builddir)
66 AC_SUBST(glibcxx_srcdir)
67 AC_SUBST(toplevel_builddir)
68 AC_SUBST(toplevel_srcdir)
70 # We use these options to decide which functions to include. They are
71 # set from the top level.
72 AC_ARG_WITH([target-subdir],
73 AC_HELP_STRING([--with-target-subdir=SUBDIR],
74 [configuring in a subdirectory]))
76 AC_ARG_WITH([cross-host],
77 AC_HELP_STRING([--with-cross-host=HOST],
78 [configuring with a cross compiler]))
81 AC_HELP_STRING([--with-newlib],
82 [assume newlib as a system C library]))
84 # Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't
85 # available). Uncomment the next line to force a particular method.
91 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
95 # Set up safe default values for all subsequent AM_CONDITIONAL tests
96 # which are themselves conditionally expanded.
97 ## (Right now, this only matters for enable_wchar_t, but nothing prevents
98 ## other macros from doing the same. This should be automated.) -pme
100 # Check for C library flavor since GNU/Linux platforms use different
101 # configuration directories depending on the C library in use.
102 AC_EGREP_CPP([_using_uclibc], [
107 ], uclibc=yes, uclibc=no)
109 AC_EGREP_CPP([_using_bionic], [
114 ], bionic=yes, bionic=no)
116 # Find platform-specific directories containing configuration info.
117 # Also possibly modify flags used elsewhere, as needed by the platform.
123 dnl Tests for newer compiler features, or features that are present in newer
124 dnl compiler versions but not older compiler versions still in use, should
128 dnl WERROR='-Werror' if requested and possible; g++'s that lack the
129 dnl new inlining code or the new system_header pragma will die on -Werror.
130 dnl Leave it out by default and use maint-mode to use it.
131 dnl SECTION_FLAGS='-ffunction-sections -fdata-sections' if
132 dnl compiler supports it and the user has not requested debug mode.
134 AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [
135 # All these tests are for C++; save the language and the compiler flags.
136 # The CXXFLAGS thing is suspicious, but based on similar bits previously
137 # found in GLIBCXX_CONFIGURE.
140 ac_test_CXXFLAGS="${CXXFLAGS+set}"
141 ac_save_CXXFLAGS="$CXXFLAGS"
143 # Check for maintainer-mode bits.
144 if test x"$USE_MAINTAINER_MODE" = xno; then
150 # Check for -ffunction-sections -fdata-sections
151 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
152 CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections'
153 AC_TRY_COMPILE([int foo; void bar() { };],, [ac_fdsections=yes], [ac_fdsections=no])
154 if test "$ac_test_CXXFLAGS" = set; then
155 CXXFLAGS="$ac_save_CXXFLAGS"
157 # this is the suspicious part
160 if test x"$ac_fdsections" = x"yes"; then
161 SECTION_FLAGS='-ffunction-sections -fdata-sections'
163 AC_MSG_RESULT($ac_fdsections)
167 AC_SUBST(SECTION_FLAGS)
172 dnl Check if the assembler used supports disabling generation of hardware
173 dnl capabilities. This is only supported by Sun as at the moment.
176 dnl HWCAP_FLAGS='-Wa,-nH' if possible.
178 AC_DEFUN([GLIBCXX_CHECK_ASSEMBLER_HWCAP], [
179 test -z "$HWCAP_FLAGS" && HWCAP_FLAGS=''
181 ac_save_CFLAGS="$CFLAGS"
182 CFLAGS="$CFLAGS -Wa,-nH"
184 AC_MSG_CHECKING([for as that supports -Wa,-nH])
185 AC_TRY_COMPILE([], [return 0;], [ac_hwcap_flags=yes],[ac_hwcap_flags=no])
186 if test "$ac_hwcap_flags" = "yes"; then
187 HWCAP_FLAGS="-Wa,-nH $HWCAP_FLAGS"
189 AC_MSG_RESULT($ac_hwcap_flags)
191 CFLAGS="$ac_save_CFLAGS"
193 AC_SUBST(HWCAP_FLAGS)
198 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
199 dnl the native linker is in use, all variables will be defined to something
200 dnl safe (like an empty string).
203 dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible
204 dnl OPT_LDFLAGS='-Wl,-O1' and '-z,relro' if possible
205 dnl LD (as a side effect of testing)
208 dnl glibcxx_ld_is_gold (set to "no" or "yes")
209 dnl glibcxx_gnu_ld_version (possibly)
211 dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will
212 dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems.
214 AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [
215 # If we're not using GNU ld, then there's no point in even trying these
216 # tests. Check for that first. We should have already tested for gld
217 # by now (in libtool), but require it now just to be safe...
218 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
219 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
220 AC_REQUIRE([AC_PROG_LD])
221 AC_REQUIRE([AC_PROG_AWK])
223 # The name set by libtool depends on the version of libtool. Shame on us
224 # for depending on an impl detail, but c'est la vie. Older versions used
225 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
226 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
227 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
228 # set (hence we're using an older libtool), then set it.
229 if test x${with_gnu_ld+set} != xset; then
230 if test x${ac_cv_prog_gnu_ld+set} != xset; then
231 # We got through "ac_require(ac_prog_ld)" and still not set? Huh?
234 with_gnu_ld=$ac_cv_prog_gnu_ld
238 # Start by getting the version number. I think the libtool test already
239 # does some of this, but throws away the result.
240 glibcxx_ld_is_gold=no
241 if test x"$with_gnu_ld" = x"yes"; then
242 AC_MSG_CHECKING([for ld version])
244 if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
245 glibcxx_ld_is_gold=yes
247 ldver=`$LD --version 2>/dev/null |
248 sed -e 's/GNU gold /GNU ld /;s/GNU ld version /GNU ld /;s/GNU ld ([^)]*) /GNU ld /;s/GNU ld \([0-9.][0-9.]*\).*/\1/; q'`
250 glibcxx_gnu_ld_version=`echo $ldver | \
251 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
252 AC_MSG_RESULT($glibcxx_gnu_ld_version)
256 glibcxx_have_gc_sections=no
257 if test "$glibcxx_ld_is_gold" = "yes"; then
258 if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
259 glibcxx_have_gc_sections=yes
262 glibcxx_gcsections_min_ld=21602
263 if test x"$with_gnu_ld" = x"yes" &&
264 test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
265 glibcxx_have_gc_sections=yes
268 if test "$glibcxx_have_gc_sections" = "yes"; then
269 # Sufficiently young GNU ld it is! Joy and bunny rabbits!
270 # NB: This flag only works reliably after 2.16.1. Configure tests
271 # for this are difficult, so hard wire a value that should work.
273 ac_test_CFLAGS="${CFLAGS+set}"
274 ac_save_CFLAGS="$CFLAGS"
275 CFLAGS='-Wl,--gc-sections'
277 # Check for -Wl,--gc-sections
278 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
279 AC_TRY_LINK([ int one(void) { return 1; }
280 int two(void) { return 2; }
281 ], [ two(); ] , [ac_gcsections=yes], [ac_gcsections=no])
282 if test "$ac_gcsections" = "yes"; then
285 if $CC -c conftest.c; then
286 if $LD --gc-sections -o conftest conftest.o 2>&1 | \
287 grep "Warning: gc-sections option ignored" > /dev/null; then
291 rm -f conftest.c conftest.o conftest
293 if test "$ac_gcsections" = "yes"; then
294 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
296 AC_MSG_RESULT($ac_gcsections)
298 if test "$ac_test_CFLAGS" = set; then
299 CFLAGS="$ac_save_CFLAGS"
301 # this is the suspicious part
307 # Note this is only for shared objects.
309 if test x"$with_gnu_ld" = x"yes"; then
310 AC_MSG_CHECKING([for ld that supports -Wl,-z,relro])
311 cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
312 if test -n "$cxx_z_relo"; then
313 OPT_LDFLAGS="-Wl,-z,relro"
316 AC_MSG_RESULT($ac_ld_relro)
319 # Set linker optimization flags.
320 if test x"$with_gnu_ld" = x"yes"; then
321 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
324 AC_SUBST(SECTION_LDFLAGS)
325 AC_SUBST(OPT_LDFLAGS)
330 dnl Check for headers for, and arguments to, the setrlimit() function.
331 dnl Used only in testsuite_hooks.h. Called from GLIBCXX_CONFIGURE_TESTSUITE.
334 dnl _GLIBCXX_RES_LIMITS if we can set artificial resource limits
335 dnl various HAVE_LIMIT_* for individual limit names
337 AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT_ancilliary], [
338 AC_MSG_CHECKING([for RLIMIT_$1])
341 #include <sys/time.h>
342 #include <sys/resource.h>
344 [ int f = RLIMIT_$1 ; ],
345 [glibcxx_mresult=1], [glibcxx_mresult=0])
346 AC_DEFINE_UNQUOTED(HAVE_LIMIT_$1, $glibcxx_mresult,
347 [Only used in build directory testsuite_hooks.h.])
348 if test $glibcxx_mresult = 1 ; then res=yes ; else res=no ; fi
352 AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT], [
353 setrlimit_have_headers=yes
354 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
356 [setrlimit_have_headers=no])
357 # If don't have the headers, then we can't run the tests now, and we
358 # won't be seeing any of these during testsuite compilation.
359 if test $setrlimit_have_headers = yes; then
360 # Can't do these in a loop, else the resulting syntax is wrong.
361 GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA)
362 GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS)
363 GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM)
364 GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS)
365 GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE)
367 # Check for rlimit, setrlimit.
368 AC_CACHE_VAL(glibcxx_cv_setrlimit, [
371 #include <sys/time.h>
372 #include <sys/resource.h>
376 [glibcxx_cv_setrlimit=yes], [glibcxx_cv_setrlimit=no])
380 AC_MSG_CHECKING([for testsuite resource limits support])
381 if test $setrlimit_have_headers = yes && test $glibcxx_cv_setrlimit = yes; then
383 AC_DEFINE(_GLIBCXX_RES_LIMITS, 1,
384 [Define if using setrlimit to set resource limits during
389 AC_MSG_RESULT($ac_res_limits)
394 dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>.
395 dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately.
397 AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [
401 ac_save_CXXFLAGS="$CXXFLAGS"
402 CXXFLAGS="$CXXFLAGS -fno-exceptions"
404 AC_MSG_CHECKING([for S_ISREG or S_IFREG])
405 AC_CACHE_VAL(glibcxx_cv_S_ISREG, [
406 GCC_TRY_COMPILE_OR_LINK(
407 [#include <sys/stat.h>],
410 S_ISREG(buffer.st_mode);],
411 [glibcxx_cv_S_ISREG=yes],
412 [glibcxx_cv_S_ISREG=no])
414 AC_CACHE_VAL(glibcxx_cv_S_IFREG, [
415 GCC_TRY_COMPILE_OR_LINK(
416 [#include <sys/stat.h>],
419 S_IFREG & buffer.st_mode;],
420 [glibcxx_cv_S_IFREG=yes],
421 [glibcxx_cv_S_IFREG=no])
424 if test $glibcxx_cv_S_ISREG = yes; then
425 AC_DEFINE(HAVE_S_ISREG, 1,
426 [Define if S_IFREG is available in <sys/stat.h>.])
428 elif test $glibcxx_cv_S_IFREG = yes; then
429 AC_DEFINE(HAVE_S_IFREG, 1,
430 [Define if S_IFREG is available in <sys/stat.h>.])
435 CXXFLAGS="$ac_save_CXXFLAGS"
441 dnl Check whether poll is available in <poll.h>, and define HAVE_POLL.
443 AC_DEFUN([GLIBCXX_CHECK_POLL], [
447 ac_save_CXXFLAGS="$CXXFLAGS"
448 CXXFLAGS="$CXXFLAGS -fno-exceptions"
450 AC_MSG_CHECKING([for poll])
451 AC_CACHE_VAL(glibcxx_cv_POLL, [
452 GCC_TRY_COMPILE_OR_LINK(
454 [struct pollfd pfd[1];
455 pfd[0].events = POLLIN;
457 [glibcxx_cv_POLL=yes],
458 [glibcxx_cv_POLL=no])
460 if test $glibcxx_cv_POLL = yes; then
461 AC_DEFINE(HAVE_POLL, 1, [Define if poll is available in <poll.h>.])
463 AC_MSG_RESULT($glibcxx_cv_POLL)
465 CXXFLAGS="$ac_save_CXXFLAGS"
471 dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV.
473 AC_DEFUN([GLIBCXX_CHECK_WRITEV], [
477 ac_save_CXXFLAGS="$CXXFLAGS"
478 CXXFLAGS="$CXXFLAGS -fno-exceptions"
480 AC_MSG_CHECKING([for writev])
481 AC_CACHE_VAL(glibcxx_cv_WRITEV, [
482 GCC_TRY_COMPILE_OR_LINK(
483 [#include <sys/uio.h>],
484 [struct iovec iov[2];
486 [glibcxx_cv_WRITEV=yes],
487 [glibcxx_cv_WRITEV=no])
489 if test $glibcxx_cv_WRITEV = yes; then
490 AC_DEFINE(HAVE_WRITEV, 1, [Define if writev is available in <sys/uio.h>.])
492 AC_MSG_RESULT($glibcxx_cv_WRITEV)
494 CXXFLAGS="$ac_save_CXXFLAGS"
500 dnl Check whether int64_t is available in <stdint.h>, and define HAVE_INT64_T.
501 dnl Also check whether int64_t is actually a typedef to long or long long.
503 AC_DEFUN([GLIBCXX_CHECK_INT64_T], [
508 AC_MSG_CHECKING([for int64_t])
509 AC_CACHE_VAL(glibcxx_cv_INT64_T, [
511 [#include <stdint.h>],
513 [glibcxx_cv_INT64_T=yes],
514 [glibcxx_cv_INT64_T=no])
517 if test $glibcxx_cv_INT64_T = yes; then
518 AC_DEFINE(HAVE_INT64_T, 1, [Define if int64_t is available in <stdint.h>.])
519 AC_MSG_RESULT($glibcxx_cv_INT64_T)
521 AC_MSG_CHECKING([for int64_t as long])
522 AC_CACHE_VAL(glibcxx_cv_int64_t_long, [
525 template<typename, typename> struct same { enum { value = -1 }; };
526 template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; };
527 int array[same<int64_t, long>::value];], [],
528 [glibcxx_cv_int64_t_long=yes], [glibcxx_cv_int64_t_long=no])
531 if test $glibcxx_cv_int64_t_long = yes; then
532 AC_DEFINE(HAVE_INT64_T_LONG, 1, [Define if int64_t is a long.])
533 AC_MSG_RESULT($glibcxx_cv_int64_t_long)
536 AC_MSG_CHECKING([for int64_t as long long])
537 AC_CACHE_VAL(glibcxx_cv_int64_t_long_long, [
540 template<typename, typename> struct same { enum { value = -1 }; };
541 template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; };
542 int array[same<int64_t, long long>::value];], [],
543 [glibcxx_cv_int64_t_long_long=yes], [glibcxx_cv_int64_t_long_long=no])
546 if test $glibcxx_cv_int64_t_long_long = yes; then
547 AC_DEFINE(HAVE_INT64_T_LONG_LONG, 1, [Define if int64_t is a long long.])
548 AC_MSG_RESULT($glibcxx_cv_int64_t_long_long)
557 dnl Check whether LFS support is available.
559 AC_DEFUN([GLIBCXX_CHECK_LFS], [
562 ac_save_CXXFLAGS="$CXXFLAGS"
563 CXXFLAGS="$CXXFLAGS -fno-exceptions"
564 AC_MSG_CHECKING([for LFS support])
565 AC_CACHE_VAL(glibcxx_cv_LFS, [
566 GCC_TRY_COMPILE_OR_LINK(
569 #include <sys/stat.h>
573 fseeko64(fp, 0, SEEK_CUR);
575 lseek64(1, 0, SEEK_CUR);
578 [glibcxx_cv_LFS=yes],
581 if test $glibcxx_cv_LFS = yes; then
582 AC_DEFINE(_GLIBCXX_USE_LFS, 1, [Define if LFS support is available.])
584 AC_MSG_RESULT($glibcxx_cv_LFS)
585 CXXFLAGS="$ac_save_CXXFLAGS"
591 dnl Check for whether a fully dynamic basic_string implementation should
592 dnl be turned on, that does not put empty objects in per-process static
593 dnl memory (mostly useful together with shared memory allocators, see PR
594 dnl libstdc++/16612 for details).
596 dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 1
597 dnl --disable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 0
598 dnl otherwise undefined
599 dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)]
600 dnl Where DEFAULT is either `yes' or `no'.
602 AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [
603 GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory])
604 if test $enable_fully_dynamic_string = yes; then
605 enable_fully_dynamic_string_def=1
607 enable_fully_dynamic_string_def=0
609 AC_DEFINE_UNQUOTED([_GLIBCXX_FULLY_DYNAMIC_STRING], [${enable_fully_dynamic_string_def}],
610 [Define to 1 if a fully dynamic basic_string is wanted, 0 to disable, undefined for platform defaults])
615 dnl Does any necessary configuration of the testsuite directory. Generates
616 dnl the testsuite_hooks.h header.
618 dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this.
622 dnl GLIBCXX_TEST_WCHAR_T
623 dnl GLIBCXX_TEST_THREAD
626 dnl baseline_subdir_switch
628 AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [
629 if $GLIBCXX_IS_NATIVE ; then
630 # Do checks for resource limit functions.
631 GLIBCXX_CHECK_SETRLIMIT
633 # Look for setenv, so that extended locale tests can be performed.
634 GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
637 if $GLIBCXX_IS_NATIVE && test $is_hosted = yes &&
638 test $enable_symvers != no; then
641 enable_abi_check=no ;;
643 enable_abi_check=yes ;;
646 # Only build this as native, since automake does not understand
651 # Export file names for ABI checking.
652 baseline_dir="$glibcxx_srcdir/config/abi/post/${abi_baseline_pair}"
653 AC_SUBST(baseline_dir)
654 baseline_subdir_switch="$abi_baseline_subdir_switch"
655 AC_SUBST(baseline_subdir_switch)
660 dnl Does any necessary configuration for docbook in the docs directory.
662 dnl XSLTPROC must be set before this
665 dnl glibcxx_stylesheets
669 AC_DEFUN([GLIBCXX_CONFIGURE_DOCBOOK], [
671 AC_MSG_CHECKING([for docbook stylesheets for documentation creation])
672 glibcxx_stylesheets=no
673 if test x${XSLTPROC} = xyes && echo '<title/>' | xsltproc --noout --nonet --xinclude http://docbook.sourceforge.net/release/xsl-ns/current/xhtml-1_1/docbook.xsl - 2>/dev/null; then
674 glibcxx_stylesheets=yes
676 AC_MSG_RESULT($glibcxx_stylesheets)
678 AC_MSG_CHECKING([for local stylesheet directory])
679 glibcxx_local_stylesheets=no
680 if test x"$glibcxx_stylesheets" = x"yes"; then
681 if test -d /usr/share/sgml/docbook/xsl-ns-stylesheets; then
682 glibcxx_local_stylesheets=yes
683 XSL_STYLE_DIR=/usr/share/sgml/docbook/xsl-ns-stylesheets
685 if test -d /usr/share/xml/docbook/stylesheet/docbook-xsl-ns; then
686 glibcxx_local_stylesheets=yes
687 XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/docbook-xsl-ns
689 if test -d /usr/share/xml/docbook/stylesheet/nwalsh5/current; then
690 glibcxx_local_stylesheets=yes
691 XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/nwalsh5/current
694 AC_MSG_RESULT($glibcxx_local_stylesheets)
696 if test x"$glibcxx_local_stylesheets" = x"yes"; then
697 AC_SUBST(XSL_STYLE_DIR)
698 AC_MSG_NOTICE($XSL_STYLE_DIR)
700 glibcxx_stylesheets=no
703 # Check for epub3 dependencies.
704 AC_MSG_CHECKING([for epub3 stylesheets for documentation creation])
705 glibcxx_epub_stylesheets=no
706 if test x"$glibcxx_local_stylesheets" = x"yes"; then
707 if test -f "$XSL_STYLE_DIR/epub3/chunk.xsl"; then
708 glibcxx_epub_stylesheets=yes
711 AC_MSG_RESULT($glibcxx_epub_stylesheets)
712 AM_CONDITIONAL(BUILD_EPUB, test x"$glibcxx_epub_stylesheets" = x"yes")
718 dnl Set up *_INCLUDES variables for all sundry Makefile.am's.
722 dnl TOPLEVEL_INCLUDES
724 AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [
725 # Used for every C++ compile we perform.
727 -I$glibcxx_builddir/include/$host_alias \
728 -I$glibcxx_builddir/include \
729 -I$glibcxx_srcdir/libsupc++"
731 # For Canadian crosses, pick this up too.
732 if test $CANADIAN = yes; then
733 GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}"
736 # Stuff in the actual top level. Currently only used by libsupc++ to
737 # get unwind* headers from the libgcc dir.
738 #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc -I$(toplevel_srcdir)/include'
739 TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc'
741 # Now, export this to all the little Makefiles....
742 AC_SUBST(GLIBCXX_INCLUDES)
743 AC_SUBST(TOPLEVEL_INCLUDES)
748 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
749 dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.)
752 dnl OPTIMIZE_CXXFLAGS
755 AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [
756 # Optimization flags that are probably a good idea for thrill-seekers. Just
757 # uncomment the lines below and make, everything else is ready to go...
758 # Alternatively OPTIMIZE_CXXFLAGS can be set in configure.host.
759 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
760 AC_SUBST(OPTIMIZE_CXXFLAGS)
762 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi'
768 dnl All installation directory information is determined here.
772 dnl glibcxx_prefixdir
773 dnl glibcxx_toolexecdir
774 dnl glibcxx_toolexeclibdir
776 dnl Assumes cross_compiling bits already done, and with_cross_host in
779 dnl This logic must match gcc/configure.ac's setting of gcc_gxx_include_dir.
780 dnl config/gxx-include-dir.m4 must be kept consistant with this as well.
781 AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [
782 glibcxx_toolexecdir=no
783 glibcxx_toolexeclibdir=no
784 glibcxx_prefixdir=$prefix
786 AC_MSG_CHECKING([for gxx-include-dir])
787 AC_ARG_WITH([gxx-include-dir],
788 AC_HELP_STRING([--with-gxx-include-dir=DIR],
789 [installation directory for include files]),
791 yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;;
792 no) gxx_include_dir=no ;;
793 *) gxx_include_dir=$withval ;;
795 [gxx_include_dir=no])
796 AC_MSG_RESULT($gxx_include_dir)
798 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
799 AC_ARG_ENABLE([version-specific-runtime-libs],
800 AC_HELP_STRING([--enable-version-specific-runtime-libs],
801 [Specify that runtime libraries should be installed in a compiler-specific directory]),
802 [case "$enableval" in
803 yes) version_specific_libs=yes ;;
804 no) version_specific_libs=no ;;
805 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
807 [version_specific_libs=no])
808 AC_MSG_RESULT($version_specific_libs)
810 # Default case for install directory for include files.
811 if test $version_specific_libs = no && test $gxx_include_dir = no; then
812 gxx_include_dir='include/c++/${gcc_version}'
813 if test -n "$with_cross_host" &&
814 test x"$with_cross_host" != x"no"; then
815 gxx_include_dir='${prefix}/${target_alias}/'"$gxx_include_dir"
817 gxx_include_dir='${prefix}/'"$gxx_include_dir"
821 # Version-specific runtime libs processing.
822 if test $version_specific_libs = yes; then
823 # Need the gcc compiler version to know where to install libraries
824 # and header files if --enable-version-specific-runtime-libs option
825 # is selected. FIXME: these variables are misnamed, there are
826 # no executables installed in _toolexecdir or _toolexeclibdir.
827 if test x"$gxx_include_dir" = x"no"; then
828 gxx_include_dir='${libdir}/gcc/${host_alias}/${gcc_version}/include/c++'
830 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
831 glibcxx_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)'
834 # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir
835 # Install a library built with a cross compiler in tooldir, not libdir.
836 if test x"$glibcxx_toolexecdir" = x"no"; then
837 if test -n "$with_cross_host" &&
838 test x"$with_cross_host" != x"no"; then
839 glibcxx_toolexecdir='${exec_prefix}/${host_alias}'
840 glibcxx_toolexeclibdir='${toolexecdir}/lib'
842 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
843 glibcxx_toolexeclibdir='${libdir}'
845 multi_os_directory=`$CXX -print-multi-os-directory`
846 case $multi_os_directory in
847 .) ;; # Avoid trailing /.
848 *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;;
852 AC_MSG_CHECKING([for install location])
853 AC_MSG_RESULT($gxx_include_dir)
855 AC_SUBST(glibcxx_prefixdir)
856 AC_SUBST(gxx_include_dir)
857 AC_SUBST(glibcxx_toolexecdir)
858 AC_SUBST(glibcxx_toolexeclibdir)
864 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING)
865 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c)
866 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER)
868 dnl See docs/html/17_intro/configury.html#enable for documentation.
870 m4_define([GLIBCXX_ENABLE],[dnl
871 m4_define([_g_switch],[--enable-$1])dnl
872 m4_define([_g_help],[AC_HELP_STRING([_g_switch$3],[$4 @<:@default=$2@:>@])])dnl
873 AC_ARG_ENABLE([$1],m4_dquote(_g_help),
878 m4_bpatsubst([$5],[permit ])) ;;
879 *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;;
880 dnl Idea for future: generate a URL pointing to
881 dnl "onlinedocs/configopts.html#whatever"
888 *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;;
892 [enable_]m4_bpatsubst([$1],-,_)[=][$2])
893 m4_undefine([_g_switch])dnl
894 m4_undefine([_g_help])dnl
899 dnl Check for ISO/IEC 9899:1999 "C99" support.
901 dnl --enable-c99 defines _GLIBCXX_USE_C99
902 dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined
903 dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)]
904 dnl Where DEFAULT is either `yes' or `no'.
905 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
907 AC_DEFUN([GLIBCXX_ENABLE_C99], [
908 GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support])
910 if test x"$enable_c99" = x"yes"; then
915 # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
916 # undefined and fake C99 facilities - like pre-standard snprintf - may be
917 # spuriously enabled.
918 # Long term, -std=c++0x could be even better, could manage to explicitely
919 # request C99 facilities to the underlying C headers.
920 ac_save_CXXFLAGS="$CXXFLAGS"
921 CXXFLAGS="$CXXFLAGS -std=c++98"
923 ac_save_gcc_no_link="$gcc_no_link"
925 if test x$gcc_no_link != xyes; then
926 # Use -fno-exceptions to that the C driver can link these tests without
927 # hitting undefined references to personality routines.
928 CXXFLAGS="$CXXFLAGS -fno-exceptions"
929 AC_CHECK_LIB(m, sin, [
932 # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK
937 # Check for the existence of <math.h> functions used if C99 is enabled.
938 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
939 AC_CACHE_VAL(glibcxx_cv_c99_math, [
940 GCC_TRY_COMPILE_OR_LINK(
942 volatile double d1, d2;
950 i = isgreater(d1, d2);
951 i = isgreaterequal(d1, d2);
953 i = islessequal(d1, d2);
954 i = islessgreater(d1, d2);
955 i = islessgreater(d1, d2);
956 i = isunordered(d1, d2);
957 ],[glibcxx_cv_c99_math=yes], [glibcxx_cv_c99_math=no])
959 AC_MSG_RESULT($glibcxx_cv_c99_math)
960 if test x"$glibcxx_cv_c99_math" = x"yes"; then
961 AC_DEFINE(_GLIBCXX_USE_C99_MATH, 1,
962 [Define if C99 functions or macros in <math.h> should be imported
963 in <cmath> in namespace std.])
966 # Check for the existence of <complex.h> complex math functions.
967 # This is necessary even though libstdc++ uses the builtin versions
968 # of these functions, because if the builtin cannot be used, a reference
969 # to the library function is emitted.
970 AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no)
971 AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
972 glibcxx_cv_c99_complex=no;
973 if test x"$ac_has_complex_h" = x"yes"; then
974 AC_MSG_CHECKING([for ISO C99 support in <complex.h>])
975 GCC_TRY_COMPILE_OR_LINK(
976 [#include <complex.h>
977 typedef __complex__ float float_type;
978 typedef __complex__ double double_type;
979 typedef __complex__ long double ld_type;
980 volatile float_type tmpf;
981 volatile double_type tmpd;
982 volatile ld_type tmpld;
985 volatile long double ld;],
997 tmpf = cpowf(tmpf, tmpf);
1010 tmpd = cpow(tmpd, tmpd);
1014 tmpld = ccosl(tmpld);
1015 tmpld = ccoshl(tmpld);
1016 tmpld = cexpl(tmpld);
1017 tmpld = clogl(tmpld);
1018 tmpld = csinl(tmpld);
1019 tmpld = csinhl(tmpld);
1020 tmpld = csqrtl(tmpld);
1021 tmpld = ctanl(tmpld);
1022 tmpld = ctanhl(tmpld);
1023 tmpld = cpowl(tmpld, tmpld);
1024 tmpld = cprojl(tmpld);
1025 ],[glibcxx_cv_c99_complex=yes], [glibcxx_cv_c99_complex=no])
1027 AC_MSG_RESULT($glibcxx_cv_c99_complex)
1028 if test x"$glibcxx_cv_c99_complex" = x"yes"; then
1029 AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX, 1,
1030 [Define if C99 functions in <complex.h> should be used in
1031 <complex>. Using compiler builtins for these functions requires
1032 corresponding C99 library functions to be present.])
1035 # Check for the existence in <stdio.h> of vscanf, et. al.
1036 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1037 AC_CACHE_VAL(glibcxx_cv_c99_stdio, [
1038 GCC_TRY_COMPILE_OR_LINK(
1041 void foo(char* fmt, ...)
1043 va_list args; va_start(args, fmt);
1044 vfscanf(stderr, "%i", args);
1046 vsnprintf(fmt, 0, "%i", args);
1047 vsscanf(fmt, "%i", args);
1049 [snprintf("12", 0, "%i");],
1050 [glibcxx_cv_c99_stdio=yes], [glibcxx_cv_c99_stdio=no])
1052 AC_MSG_RESULT($glibcxx_cv_c99_stdio)
1054 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1055 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1056 AC_CACHE_VAL(glibcxx_cv_c99_stdlib, [
1057 GCC_TRY_COMPILE_OR_LINK(
1058 [#include <stdlib.h>
1060 volatile long double ld;
1061 volatile unsigned long long ll;
1064 f = strtof("gnu", &tmp);
1065 ld = strtold("gnu", &tmp);
1066 ll = strtoll("gnu", &tmp, 10);
1067 ll = strtoull("gnu", &tmp, 10);
1069 mydivt = lldiv(10,1);
1074 ],[glibcxx_cv_c99_stdlib=yes], [glibcxx_cv_c99_stdlib=no])
1076 AC_MSG_RESULT($glibcxx_cv_c99_stdlib)
1078 # Check for the existence in <wchar.h> of wcstold, etc.
1079 glibcxx_cv_c99_wchar=no;
1080 if test x"$ac_has_wchar_h" = xyes &&
1081 test x"$ac_has_wctype_h" = xyes; then
1082 AC_MSG_CHECKING([for ISO C99 support in <wchar.h>])
1083 AC_TRY_COMPILE([#include <wchar.h>
1090 ],[],[glibcxx_cv_c99_wchar=yes], [glibcxx_cv_c99_wchar=no])
1092 # Checks for wide character functions that may not be present.
1093 # Injection of these is wrapped with guard macros.
1094 # NB: only put functions here, instead of immediately above, if
1095 # absolutely necessary.
1096 AC_TRY_COMPILE([#include <wchar.h>
1097 namespace test { using ::vfwscanf; } ], [],
1098 [AC_DEFINE(HAVE_VFWSCANF,1,
1099 [Defined if vfwscanf exists.])],[])
1101 AC_TRY_COMPILE([#include <wchar.h>
1102 namespace test { using ::vswscanf; } ], [],
1103 [AC_DEFINE(HAVE_VSWSCANF,1,
1104 [Defined if vswscanf exists.])],[])
1106 AC_TRY_COMPILE([#include <wchar.h>
1107 namespace test { using ::vwscanf; } ], [],
1108 [AC_DEFINE(HAVE_VWSCANF,1,[Defined if vwscanf exists.])],[])
1110 AC_TRY_COMPILE([#include <wchar.h>
1111 namespace test { using ::wcstof; } ], [],
1112 [AC_DEFINE(HAVE_WCSTOF,1,[Defined if wcstof exists.])],[])
1114 AC_TRY_COMPILE([#include <wctype.h>],
1115 [ wint_t t; int i = iswblank(t);],
1116 [AC_DEFINE(HAVE_ISWBLANK,1,
1117 [Defined if iswblank exists.])],[])
1119 AC_MSG_RESULT($glibcxx_cv_c99_wchar)
1122 # Option parsed, now set things appropriately.
1123 if test x"$glibcxx_cv_c99_math" = x"no" ||
1124 test x"$glibcxx_cv_c99_complex" = x"no" ||
1125 test x"$glibcxx_cv_c99_stdio" = x"no" ||
1126 test x"$glibcxx_cv_c99_stdlib" = x"no" ||
1127 test x"$glibcxx_cv_c99_wchar" = x"no"; then
1130 AC_DEFINE(_GLIBCXX_USE_C99, 1,
1131 [Define if C99 functions or macros from <wchar.h>, <math.h>,
1132 <complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.])
1135 gcc_no_link="$ac_save_gcc_no_link"
1136 LIBS="$ac_save_LIBS"
1137 CXXFLAGS="$ac_save_CXXFLAGS"
1141 AC_MSG_CHECKING([for fully enabled ISO C99 support])
1142 AC_MSG_RESULT($enable_c99)
1147 dnl Check for clock_gettime, nanosleep and sched_yield, used in the
1148 dnl implementation of 20.11.7 [time.clock], and 30.3.2 [thread.thread.this]
1149 dnl in the C++11 standard.
1151 dnl --enable-libstdcxx-time
1152 dnl --enable-libstdcxx-time=yes
1153 dnl checks for the availability of monotonic and realtime clocks,
1154 dnl nanosleep and sched_yield in libc and libposix4 and, if needed,
1155 dnl links in the latter.
1156 dnl --enable-libstdcxx-time=rt
1157 dnl also searches (and, if needed, links) librt. Note that this is
1158 dnl not always desirable because, in glibc, for example, in turn it
1159 dnl triggers the linking of libpthread too, which activates locking,
1160 dnl a large overhead for single-thread programs.
1161 dnl --enable-libstdcxx-time=no
1162 dnl --disable-libstdcxx-time
1163 dnl disables the checks completely
1165 dnl N.B. Darwin provides nanosleep but doesn't support the whole POSIX
1166 dnl Timers option, so doesn't define _POSIX_TIMERS. Because the test
1167 dnl below fails Darwin unconditionally defines _GLIBCXX_USE_NANOSLEEP in
1168 dnl os_defines.h and also defines _GLIBCXX_USE_SCHED_YIELD.
1170 AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [
1172 AC_MSG_CHECKING([for clock_gettime, nanosleep and sched_yield])
1173 GLIBCXX_ENABLE(libstdcxx-time,$1,[[[=KIND]]],
1174 [use KIND for check type],
1179 ac_save_CXXFLAGS="$CXXFLAGS"
1180 CXXFLAGS="$CXXFLAGS -fno-exceptions"
1181 ac_save_LIBS="$LIBS"
1183 ac_has_clock_monotonic=no
1184 ac_has_clock_realtime=no
1185 AC_MSG_RESULT($enable_libstdcxx_time)
1187 if test x"$enable_libstdcxx_time" != x"no"; then
1189 if test x"$enable_libstdcxx_time" = x"rt"; then
1190 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
1191 AC_SEARCH_LIBS(nanosleep, [rt posix4])
1193 AC_SEARCH_LIBS(clock_gettime, [posix4])
1194 AC_SEARCH_LIBS(nanosleep, [posix4])
1197 case "$ac_cv_search_clock_gettime" in
1198 -l*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime
1201 case "$ac_cv_search_nanosleep" in
1202 -l*) GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_nanosleep"
1206 AC_SEARCH_LIBS(sched_yield, [rt posix4])
1208 case "$ac_cv_search_sched_yield" in
1210 GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
1211 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
1212 [ Defined if sched_yield is available. ])
1215 if test x"$enable_libstdcxx_time" = x"rt"; then
1216 GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
1217 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
1218 [ Defined if sched_yield is available. ])
1222 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
1223 [ Defined if sched_yield is available. ])
1227 AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no)
1229 if test x"$ac_has_unistd_h" = x"yes"; then
1230 AC_MSG_CHECKING([for monotonic clock])
1232 [#include <unistd.h>
1235 [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
1238 clock_gettime(CLOCK_MONOTONIC, &tp);
1239 ], [ac_has_clock_monotonic=yes], [ac_has_clock_monotonic=no])
1241 AC_MSG_RESULT($ac_has_clock_monotonic)
1243 AC_MSG_CHECKING([for realtime clock])
1245 [#include <unistd.h>
1248 [#if _POSIX_TIMERS > 0
1251 clock_gettime(CLOCK_REALTIME, &tp);
1252 ], [ac_has_clock_realtime=yes], [ac_has_clock_realtime=no])
1254 AC_MSG_RESULT($ac_has_clock_realtime)
1256 AC_MSG_CHECKING([for nanosleep])
1258 [#include <unistd.h>
1261 [#if _POSIX_TIMERS > 0
1265 ], [ac_has_nanosleep=yes], [ac_has_nanosleep=no])
1267 AC_MSG_RESULT($ac_has_nanosleep)
1271 if test x"$ac_has_clock_monotonic" = x"yes"; then
1272 AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1,
1273 [ Defined if clock_gettime has monotonic clock support. ])
1276 if test x"$ac_has_clock_realtime" = x"yes"; then
1277 AC_DEFINE(_GLIBCXX_USE_CLOCK_REALTIME, 1,
1278 [ Defined if clock_gettime has realtime clock support. ])
1281 if test x"$ac_has_nanosleep" = x"yes"; then
1282 AC_DEFINE(_GLIBCXX_USE_NANOSLEEP, 1,
1283 [ Defined if nanosleep is available. ])
1285 AC_MSG_CHECKING([for sleep])
1286 AC_TRY_COMPILE([#include <unistd.h>],
1288 [ac_has_sleep=yes],[ac_has_sleep=no])
1289 if test x"$ac_has_sleep" = x"yes"; then
1290 AC_DEFINE(HAVE_SLEEP,1, [Defined if sleep exists.])
1292 AC_MSG_RESULT($ac_has_sleep)
1293 AC_MSG_CHECKING([for usleep])
1294 AC_TRY_COMPILE([#include <unistd.h>],
1297 [ac_has_usleep=yes],[ac_has_usleep=no])
1298 if test x"$ac_has_usleep" = x"yes"; then
1299 AC_DEFINE(HAVE_USLEEP,1, [Defined if usleep exists.])
1301 AC_MSG_RESULT($ac_has_usleep)
1304 AC_SUBST(GLIBCXX_LIBS)
1306 CXXFLAGS="$ac_save_CXXFLAGS"
1307 LIBS="$ac_save_LIBS"
1312 dnl Check for gettimeofday, used in the implementation of 20.11.7
1313 dnl [time.clock] in the C++11 standard.
1315 AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [
1317 AC_MSG_CHECKING([for gettimeofday])
1321 ac_save_CXXFLAGS="$CXXFLAGS"
1322 CXXFLAGS="$CXXFLAGS -fno-exceptions"
1324 ac_has_gettimeofday=no;
1325 AC_CHECK_HEADERS(sys/time.h, ac_has_sys_time_h=yes, ac_has_sys_time_h=no)
1326 if test x"$ac_has_sys_time_h" = x"yes"; then
1327 AC_MSG_CHECKING([for gettimeofday])
1328 GCC_TRY_COMPILE_OR_LINK([#include <sys/time.h>],
1329 [timeval tv; gettimeofday(&tv, 0);],
1330 [ac_has_gettimeofday=yes], [ac_has_gettimeofday=no])
1332 AC_MSG_RESULT($ac_has_gettimeofday)
1335 if test x"$ac_has_gettimeofday" = x"yes"; then
1336 AC_DEFINE(_GLIBCXX_USE_GETTIMEOFDAY, 1,
1337 [ Defined if gettimeofday is available. ])
1340 CXXFLAGS="$ac_save_CXXFLAGS"
1345 dnl Check for ISO/IEC 9899:1999 "C99" support to ISO/IEC DTR 19768 "TR1"
1346 dnl facilities in Chapter 8, "C compatibility".
1348 AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [
1353 # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
1354 # undefined and fake C99 facilities may be spuriously enabled.
1355 ac_save_CXXFLAGS="$CXXFLAGS"
1356 CXXFLAGS="$CXXFLAGS -std=c++98"
1358 # Check for the existence of <complex.h> complex math functions used
1360 AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
1361 ac_c99_complex_tr1=no;
1362 if test x"$ac_has_complex_h" = x"yes"; then
1363 AC_MSG_CHECKING([for ISO C99 support to TR1 in <complex.h>])
1364 AC_TRY_COMPILE([#include <complex.h>],
1365 [typedef __complex__ float float_type; float_type tmpf;
1372 typedef __complex__ double double_type; double_type tmpd;
1379 typedef __complex__ long double ld_type; ld_type tmpld;
1386 ],[ac_c99_complex_tr1=yes], [ac_c99_complex_tr1=no])
1388 AC_MSG_RESULT($ac_c99_complex_tr1)
1389 if test x"$ac_c99_complex_tr1" = x"yes"; then
1390 AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX_TR1, 1,
1391 [Define if C99 functions in <complex.h> should be used in
1392 <tr1/complex>. Using compiler builtins for these functions
1393 requires corresponding C99 library functions to be present.])
1396 # Check for the existence of <ctype.h> functions.
1397 AC_MSG_CHECKING([for ISO C99 support to TR1 in <ctype.h>])
1398 AC_CACHE_VAL(glibcxx_cv_c99_ctype_tr1, [
1399 AC_TRY_COMPILE([#include <ctype.h>],
1403 ],[glibcxx_cv_c99_ctype_tr1=yes],
1404 [glibcxx_cv_c99_ctype_tr1=no])
1406 AC_MSG_RESULT($glibcxx_cv_c99_ctype_tr1)
1407 if test x"$glibcxx_cv_c99_ctype_tr1" = x"yes"; then
1408 AC_DEFINE(_GLIBCXX_USE_C99_CTYPE_TR1, 1,
1409 [Define if C99 functions in <ctype.h> should be imported in
1410 <tr1/cctype> in namespace std::tr1.])
1413 # Check for the existence of <fenv.h> functions.
1414 AC_CHECK_HEADERS(fenv.h, ac_has_fenv_h=yes, ac_has_fenv_h=no)
1416 if test x"$ac_has_fenv_h" = x"yes"; then
1417 AC_MSG_CHECKING([for ISO C99 support to TR1 in <fenv.h>])
1418 AC_TRY_COMPILE([#include <fenv.h>],
1423 ret = feclearexcept(except);
1424 ret = fegetexceptflag(pflag, except);
1425 ret = feraiseexcept(except);
1426 ret = fesetexceptflag(pflag, except);
1427 ret = fetestexcept(except);
1429 ret = fesetround(mode);
1430 ret = fegetenv(penv);
1431 ret = feholdexcept(penv);
1432 ret = fesetenv(penv);
1433 ret = feupdateenv(penv);
1434 ],[ac_c99_fenv_tr1=yes], [ac_c99_fenv_tr1=no])
1436 AC_MSG_RESULT($ac_c99_fenv_tr1)
1437 if test x"$ac_c99_fenv_tr1" = x"yes"; then
1438 AC_DEFINE(_GLIBCXX_USE_C99_FENV_TR1, 1,
1439 [Define if C99 functions in <fenv.h> should be imported in
1440 <tr1/cfenv> in namespace std::tr1.])
1443 # Check for the existence of <stdint.h> types.
1444 AC_MSG_CHECKING([for ISO C99 support to TR1 in <stdint.h>])
1445 AC_CACHE_VAL(glibcxx_cv_c99_stdint_tr1, [
1446 AC_TRY_COMPILE([#define __STDC_LIMIT_MACROS
1447 #define __STDC_CONSTANT_MACROS
1448 #include <stdint.h>],
1449 [typedef int8_t my_int8_t;
1450 my_int8_t i8 = INT8_MIN;
1452 typedef int16_t my_int16_t;
1453 my_int16_t i16 = INT16_MIN;
1455 typedef int32_t my_int32_t;
1456 my_int32_t i32 = INT32_MIN;
1458 typedef int64_t my_int64_t;
1459 my_int64_t i64 = INT64_MIN;
1461 typedef int_fast8_t my_int_fast8_t;
1462 my_int_fast8_t if8 = INT_FAST8_MIN;
1463 if8 = INT_FAST8_MAX;
1464 typedef int_fast16_t my_int_fast16_t;
1465 my_int_fast16_t if16 = INT_FAST16_MIN;
1466 if16 = INT_FAST16_MAX;
1467 typedef int_fast32_t my_int_fast32_t;
1468 my_int_fast32_t if32 = INT_FAST32_MIN;
1469 if32 = INT_FAST32_MAX;
1470 typedef int_fast64_t my_int_fast64_t;
1471 my_int_fast64_t if64 = INT_FAST64_MIN;
1472 if64 = INT_FAST64_MAX;
1473 typedef int_least8_t my_int_least8_t;
1474 my_int_least8_t il8 = INT_LEAST8_MIN;
1475 il8 = INT_LEAST8_MAX;
1476 typedef int_least16_t my_int_least16_t;
1477 my_int_least16_t il16 = INT_LEAST16_MIN;
1478 il16 = INT_LEAST16_MAX;
1479 typedef int_least32_t my_int_least32_t;
1480 my_int_least32_t il32 = INT_LEAST32_MIN;
1481 il32 = INT_LEAST32_MAX;
1482 typedef int_least64_t my_int_least64_t;
1483 my_int_least64_t il64 = INT_LEAST64_MIN;
1484 il64 = INT_LEAST64_MAX;
1485 typedef intmax_t my_intmax_t;
1486 my_intmax_t im = INTMAX_MAX;
1488 typedef intptr_t my_intptr_t;
1489 my_intptr_t ip = INTPTR_MAX;
1491 typedef uint8_t my_uint8_t;
1492 my_uint8_t ui8 = UINT8_MAX;
1494 typedef uint16_t my_uint16_t;
1495 my_uint16_t ui16 = UINT16_MAX;
1497 typedef uint32_t my_uint32_t;
1498 my_uint32_t ui32 = UINT32_MAX;
1500 typedef uint64_t my_uint64_t;
1501 my_uint64_t ui64 = UINT64_MAX;
1503 typedef uint_fast8_t my_uint_fast8_t;
1504 my_uint_fast8_t uif8 = UINT_FAST8_MAX;
1505 uif8 = UINT_FAST8_MAX;
1506 typedef uint_fast16_t my_uint_fast16_t;
1507 my_uint_fast16_t uif16 = UINT_FAST16_MAX;
1508 uif16 = UINT_FAST16_MAX;
1509 typedef uint_fast32_t my_uint_fast32_t;
1510 my_uint_fast32_t uif32 = UINT_FAST32_MAX;
1511 uif32 = UINT_FAST32_MAX;
1512 typedef uint_fast64_t my_uint_fast64_t;
1513 my_uint_fast64_t uif64 = UINT_FAST64_MAX;
1514 uif64 = UINT_FAST64_MAX;
1515 typedef uint_least8_t my_uint_least8_t;
1516 my_uint_least8_t uil8 = UINT_LEAST8_MAX;
1517 uil8 = UINT_LEAST8_MAX;
1518 typedef uint_least16_t my_uint_least16_t;
1519 my_uint_least16_t uil16 = UINT_LEAST16_MAX;
1520 uil16 = UINT_LEAST16_MAX;
1521 typedef uint_least32_t my_uint_least32_t;
1522 my_uint_least32_t uil32 = UINT_LEAST32_MAX;
1523 uil32 = UINT_LEAST32_MAX;
1524 typedef uint_least64_t my_uint_least64_t;
1525 my_uint_least64_t uil64 = UINT_LEAST64_MAX;
1526 uil64 = UINT_LEAST64_MAX;
1527 typedef uintmax_t my_uintmax_t;
1528 my_uintmax_t uim = UINTMAX_MAX;
1530 typedef uintptr_t my_uintptr_t;
1531 my_uintptr_t uip = UINTPTR_MAX;
1533 ],[glibcxx_cv_c99_stdint_tr1=yes],
1534 [glibcxx_cv_c99_stdint_tr1=no])
1536 AC_MSG_RESULT($glibcxx_cv_c99_stdint_tr1)
1537 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
1538 AC_DEFINE(_GLIBCXX_USE_C99_STDINT_TR1, 1,
1539 [Define if C99 types in <stdint.h> should be imported in
1540 <tr1/cstdint> in namespace std::tr1.])
1543 # Check for the existence of <math.h> functions.
1544 AC_MSG_CHECKING([for ISO C99 support to TR1 in <math.h>])
1545 AC_CACHE_VAL(glibcxx_cv_c99_math_tr1, [
1546 AC_TRY_COMPILE([#include <math.h>],
1547 [typedef double_t my_double_t;
1548 typedef float_t my_float_t;
1562 copysignf(0.0f, 0.0f);
1563 copysignl(0.0l, 0.0l);
1580 fmaf(0.0f, 0.0f, 0.0f);
1581 fmal(0.0l, 0.0l, 0.0l);
1624 nextafter(0.0, 0.0);
1625 nextafterf(0.0f, 0.0f);
1626 nextafterl(0.0l, 0.0l);
1627 nexttoward(0.0, 0.0);
1628 nexttowardf(0.0f, 0.0f);
1629 nexttowardl(0.0l, 0.0l);
1630 remainder(0.0, 0.0);
1631 remainderf(0.0f, 0.0f);
1632 remainderl(0.0l, 0.0l);
1633 remquo(0.0, 0.0, 0);
1634 remquof(0.0f, 0.0f, 0);
1635 remquol(0.0l, 0.0l, 0);
1654 ],[glibcxx_cv_c99_math_tr1=yes], [glibcxx_cv_c99_math_tr1=no])
1656 AC_MSG_RESULT($glibcxx_cv_c99_math_tr1)
1657 if test x"$glibcxx_cv_c99_math_tr1" = x"yes"; then
1658 AC_DEFINE(_GLIBCXX_USE_C99_MATH_TR1, 1,
1659 [Define if C99 functions or macros in <math.h> should be imported
1660 in <tr1/cmath> in namespace std::tr1.])
1663 # Check for the existence of <inttypes.h> functions (NB: doesn't make
1664 # sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1).
1665 ac_c99_inttypes_tr1=no;
1666 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
1667 AC_MSG_CHECKING([for ISO C99 support to TR1 in <inttypes.h>])
1668 AC_TRY_COMPILE([#include <inttypes.h>],
1669 [intmax_t i, numer, denom, base;
1672 intmax_t ret = imaxabs(i);
1673 imaxdiv_t dret = imaxdiv(numer, denom);
1674 ret = strtoimax(s, endptr, base);
1675 uintmax_t uret = strtoumax(s, endptr, base);
1676 ],[ac_c99_inttypes_tr1=yes], [ac_c99_inttypes_tr1=no])
1678 AC_MSG_RESULT($ac_c99_inttypes_tr1)
1679 if test x"$ac_c99_inttypes_tr1" = x"yes"; then
1680 AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_TR1, 1,
1681 [Define if C99 functions in <inttypes.h> should be imported in
1682 <tr1/cinttypes> in namespace std::tr1.])
1685 # Check for the existence of whcar_t <inttypes.h> functions (NB: doesn't
1686 # make sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1).
1687 ac_c99_inttypes_wchar_t_tr1=no;
1688 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
1689 AC_MSG_CHECKING([for wchar_t ISO C99 support to TR1 in <inttypes.h>])
1690 AC_TRY_COMPILE([#include <inttypes.h>],
1694 intmax_t ret = wcstoimax(s, endptr, base);
1695 uintmax_t uret = wcstoumax(s, endptr, base);
1696 ],[ac_c99_inttypes_wchar_t_tr1=yes],
1697 [ac_c99_inttypes_wchar_t_tr1=no])
1699 AC_MSG_RESULT($ac_c99_inttypes_wchar_t_tr1)
1700 if test x"$ac_c99_inttypes_wchar_t_tr1" = x"yes"; then
1701 AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1, 1,
1702 [Define if wchar_t C99 functions in <inttypes.h> should be
1703 imported in <tr1/cinttypes> in namespace std::tr1.])
1706 # Check for the existence of the <stdbool.h> header.
1707 AC_CHECK_HEADERS(stdbool.h)
1709 # Check for the existence of the <stdalign.h> header.
1710 AC_CHECK_HEADERS(stdalign.h)
1712 CXXFLAGS="$ac_save_CXXFLAGS"
1717 dnl Check whether "/dev/random" and "/dev/urandom" are available for the
1718 dnl random_device of "TR1" (Chapter 5.1, "Random number generation").
1720 AC_DEFUN([GLIBCXX_CHECK_RANDOM_TR1], [
1722 AC_MSG_CHECKING([for "/dev/random" and "/dev/urandom" for TR1 random_device])
1723 AC_CACHE_VAL(glibcxx_cv_random_tr1, [
1724 if test -r /dev/random && test -r /dev/urandom; then
1725 glibcxx_cv_random_tr1=yes;
1727 glibcxx_cv_random_tr1=no;
1730 AC_MSG_RESULT($glibcxx_cv_random_tr1)
1732 if test x"$glibcxx_cv_random_tr1" = x"yes"; then
1733 AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1,
1734 [Define if /dev/random and /dev/urandom are available for
1735 the random_device of TR1 (Chapter 5.1).])
1741 dnl Compute the EOF, SEEK_CUR, and SEEK_END integer constants.
1743 AC_DEFUN([GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS], [
1745 AC_CACHE_CHECK([for the value of EOF], glibcxx_cv_stdio_eof, [
1746 AC_COMPUTE_INT([glibcxx_cv_stdio_eof], [[EOF]],
1747 [#include <stdio.h>],
1748 [AC_MSG_ERROR([computing EOF failed])])
1750 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_EOF, $glibcxx_cv_stdio_eof,
1751 [Define to the value of the EOF integer constant.])
1753 AC_CACHE_CHECK([for the value of SEEK_CUR], glibcxx_cv_stdio_seek_cur, [
1754 AC_COMPUTE_INT([glibcxx_cv_stdio_seek_cur], [[SEEK_CUR]],
1755 [#include <stdio.h>],
1756 [AC_MSG_ERROR([computing SEEK_CUR failed])])
1758 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_CUR, $glibcxx_cv_stdio_seek_cur,
1759 [Define to the value of the SEEK_CUR integer constant.])
1761 AC_CACHE_CHECK([for the value of SEEK_END], glibcxx_cv_stdio_seek_end, [
1762 AC_COMPUTE_INT([glibcxx_cv_stdio_seek_end], [[SEEK_END]],
1763 [#include <stdio.h>],
1764 [AC_MSG_ERROR([computing SEEK_END failed])])
1766 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_END, $glibcxx_cv_stdio_seek_end,
1767 [Define to the value of the SEEK_END integer constant.])
1771 dnl Check whether required C++ overloads are present in <stdio.h>.
1773 AC_DEFUN([GLIBCXX_CHECK_STDIO_PROTO], [
1778 AC_MSG_CHECKING([for gets declaration])
1779 AC_CACHE_VAL(glibcxx_cv_gets, [
1780 AC_COMPILE_IFELSE([AC_LANG_SOURCE(
1787 [glibcxx_cv_gets=yes],
1788 [glibcxx_cv_gets=no]
1791 if test $glibcxx_cv_gets = yes; then
1792 AC_DEFINE(HAVE_GETS, 1, [Define if gets is available in <stdio.h>.])
1794 AC_MSG_RESULT($glibcxx_cv_gets)
1800 dnl Check whether macros, etc are present for <system_error>
1802 AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [
1804 m4_pushdef([n_syserr], [1])dnl
1805 m4_foreach([syserr], [EOWNERDEAD, ENOTRECOVERABLE, ENOLINK, EPROTO, ENODATA,
1806 ENOSR, ENOSTR, ETIME, EBADMSG, ECANCELED,
1807 EOVERFLOW, ENOTSUP, EIDRM, ETXTBSY,
1808 ECHILD, ENOSPC, EPERM,
1809 ETIMEDOUT, EWOULDBLOCK],
1810 [m4_pushdef([SYSERR], m4_toupper(syserr))dnl
1811 AC_MSG_CHECKING([for syserr])
1812 AC_CACHE_VAL([glibcxx_cv_system_error[]n_syserr], [
1813 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <errno.h>]],
1814 [int i = syserr;])],
1815 [glibcxx_cv_system_error[]n_syserr=yes],
1816 [glibcxx_cv_system_error[]n_syserr=no])
1818 AC_MSG_RESULT([$glibcxx_cv_system_error[]n_syserr])
1819 if test x"$glibcxx_cv_system_error[]n_syserr" = x"yes"; then
1820 AC_DEFINE([HAVE_]SYSERR, 1, [Define if ]syserr[ exists.])
1822 m4_define([n_syserr], m4_incr(n_syserr))dnl
1823 m4_popdef([SYSERR])dnl
1825 m4_popdef([n_syserr])dnl
1829 dnl Check for what type of C headers to use.
1831 dnl --enable-cheaders= [does stuff].
1832 dnl --disable-cheaders [does not do anything, really].
1833 dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)]
1834 dnl Where DEFAULT is either 'c' or 'c_std' or 'c_global'.
1836 AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [
1837 GLIBCXX_ENABLE(cheaders,$1,[[[=KIND]]],
1838 [construct "C" headers for g++], [permit c|c_std|c_global])
1839 AC_MSG_NOTICE("C" header strategy set to $enable_cheaders)
1841 C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders
1843 # Allow overrides to configure.host here.
1844 if test $enable_cheaders = c_global; then
1848 AC_SUBST(C_INCLUDE_DIR)
1849 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c)
1850 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std)
1851 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_GLOBAL, test $enable_cheaders = c_global)
1852 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes)
1857 dnl Check for which locale library to use. The choice is mapped to
1858 dnl a subdirectory of config/locale.
1860 dnl Default is generic.
1862 AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [
1863 GLIBCXX_ENABLE(clocale,auto,[[[=MODEL]]],
1864 [use MODEL for target locale package],
1865 [permit generic|gnu|ieee_1003.1-2001|newlib|yes|no|auto])
1867 # Deal with gettext issues. Default to not using it (=no) until we detect
1868 # support for it later. Let the user turn it off via --e/d, but let that
1869 # default to on for easier handling.
1872 AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]),
1876 # Either a known package, or "auto"
1877 if test $enable_clocale = no || test $enable_clocale = yes; then
1880 enable_clocale_flag=$enable_clocale
1882 # Probe for locale model to use if none specified.
1883 # Default to "generic".
1884 if test $enable_clocale_flag = auto; then
1885 case ${target_os} in
1886 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
1887 enable_clocale_flag=gnu
1890 enable_clocale_flag=darwin
1893 enable_clocale_flag=newlib
1896 if test x"$with_newlib" = x"yes"; then
1897 enable_clocale_flag=newlib
1899 enable_clocale_flag=generic
1905 # Sanity check model, and test for special functionality.
1906 if test $enable_clocale_flag = gnu; then
1907 AC_EGREP_CPP([_GLIBCXX_ok], [
1908 #include <features.h>
1909 #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(__UCLIBC__)
1912 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1914 # Set it to scream when it hurts.
1915 ac_save_CFLAGS="$CFLAGS"
1916 CFLAGS="-Wimplicit-function-declaration -Werror"
1918 # Use strxfrm_l if available.
1919 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1921 #include <locale.h>],
1922 [char s[128]; __locale_t loc; strxfrm_l(s, "C", 5, loc);],
1923 AC_DEFINE(HAVE_STRXFRM_L, 1,
1924 [Define if strxfrm_l is available in <string.h>.]),)
1926 # Use strerror_l if available.
1927 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1929 #include <locale.h>],
1930 [__locale_t loc; strerror_l(5, loc);],
1931 AC_DEFINE(HAVE_STRERROR_L, 1,
1932 [Define if strerror_l is available in <string.h>.]),)
1934 CFLAGS="$ac_save_CFLAGS"
1937 # Perhaps use strerror_r if available, and strerror_l isn't.
1938 ac_save_CFLAGS="$CFLAGS"
1939 CFLAGS="-Wimplicit-function-declaration -Werror"
1940 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1942 #include <locale.h>],
1943 [char s[128]; strerror_r(5, s, 128);],
1944 AC_DEFINE(HAVE_STRERROR_R, 1,
1945 [Define if strerror_r is available in <string.h>.]),)
1946 CFLAGS="$ac_save_CFLAGS"
1948 # Set configure bits for specified locale package
1949 AC_MSG_CHECKING([for C locale to use])
1950 case ${enable_clocale_flag} in
1952 AC_MSG_RESULT(generic)
1954 CLOCALE_H=config/locale/generic/c_locale.h
1955 CLOCALE_CC=config/locale/generic/c_locale.cc
1956 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1957 CCOLLATE_CC=config/locale/generic/collate_members.cc
1958 CCTYPE_CC=config/locale/generic/ctype_members.cc
1959 CMESSAGES_H=config/locale/generic/messages_members.h
1960 CMESSAGES_CC=config/locale/generic/messages_members.cc
1961 CMONEY_CC=config/locale/generic/monetary_members.cc
1962 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1963 CTIME_H=config/locale/generic/time_members.h
1964 CTIME_CC=config/locale/generic/time_members.cc
1965 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1968 AC_MSG_RESULT(darwin or freebsd)
1970 CLOCALE_H=config/locale/generic/c_locale.h
1971 CLOCALE_CC=config/locale/generic/c_locale.cc
1972 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1973 CCOLLATE_CC=config/locale/generic/collate_members.cc
1974 CCTYPE_CC=config/locale/darwin/ctype_members.cc
1975 CMESSAGES_H=config/locale/generic/messages_members.h
1976 CMESSAGES_CC=config/locale/generic/messages_members.cc
1977 CMONEY_CC=config/locale/generic/monetary_members.cc
1978 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1979 CTIME_H=config/locale/generic/time_members.h
1980 CTIME_CC=config/locale/generic/time_members.cc
1981 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1987 # Declare intention to use gettext, and add support for specific
1989 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1992 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1993 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1994 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1997 # Export the build objects.
1998 for ling in $ALL_LINGUAS; do \
1999 glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \
2000 glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \
2002 AC_SUBST(glibcxx_MOFILES)
2003 AC_SUBST(glibcxx_POFILES)
2005 CLOCALE_H=config/locale/gnu/c_locale.h
2006 CLOCALE_CC=config/locale/gnu/c_locale.cc
2007 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
2008 CCOLLATE_CC=config/locale/gnu/collate_members.cc
2009 CCTYPE_CC=config/locale/gnu/ctype_members.cc
2010 CMESSAGES_H=config/locale/gnu/messages_members.h
2011 CMESSAGES_CC=config/locale/gnu/messages_members.cc
2012 CMONEY_CC=config/locale/gnu/monetary_members.cc
2013 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
2014 CTIME_H=config/locale/gnu/time_members.h
2015 CTIME_CC=config/locale/gnu/time_members.cc
2016 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
2019 AC_MSG_RESULT(IEEE 1003.1)
2021 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
2022 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
2023 CCODECVT_CC=config/locale/generic/codecvt_members.cc
2024 CCOLLATE_CC=config/locale/generic/collate_members.cc
2025 CCTYPE_CC=config/locale/generic/ctype_members.cc
2026 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
2027 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
2028 CMONEY_CC=config/locale/generic/monetary_members.cc
2029 CNUMERIC_CC=config/locale/generic/numeric_members.cc
2030 CTIME_H=config/locale/generic/time_members.h
2031 CTIME_CC=config/locale/generic/time_members.cc
2032 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
2035 AC_MSG_RESULT(newlib)
2037 CLOCALE_H=config/locale/generic/c_locale.h
2038 CLOCALE_CC=config/locale/generic/c_locale.cc
2039 CCODECVT_CC=config/locale/generic/codecvt_members.cc
2040 CCOLLATE_CC=config/locale/generic/collate_members.cc
2041 CCTYPE_CC=config/locale/newlib/ctype_members.cc
2042 CMESSAGES_H=config/locale/generic/messages_members.h
2043 CMESSAGES_CC=config/locale/generic/messages_members.cc
2044 CMONEY_CC=config/locale/generic/monetary_members.cc
2045 CNUMERIC_CC=config/locale/generic/numeric_members.cc
2046 CTIME_H=config/locale/generic/time_members.h
2047 CTIME_CC=config/locale/generic/time_members.cc
2048 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
2052 # This is where the testsuite looks for locale catalogs, using the
2053 # -DLOCALEDIR define during testsuite compilation.
2054 glibcxx_localedir=${glibcxx_builddir}/po/share/locale
2055 AC_SUBST(glibcxx_localedir)
2057 # A standalone libintl (e.g., GNU libintl) may be in use.
2058 if test $USE_NLS = yes; then
2059 AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no)
2060 AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no)
2062 if test $USE_NLS = yes; then
2063 AC_DEFINE(_GLIBCXX_USE_NLS, 1,
2064 [Define if NLS translations are to be used.])
2069 AC_SUBST(CMESSAGES_H)
2070 AC_SUBST(CCODECVT_CC)
2071 AC_SUBST(CCOLLATE_CC)
2073 AC_SUBST(CMESSAGES_CC)
2075 AC_SUBST(CNUMERIC_CC)
2078 AC_SUBST(CLOCALE_CC)
2079 AC_SUBST(CLOCALE_INTERNAL_H)
2084 dnl Check for which std::allocator base class to use. The choice is
2085 dnl mapped from a subdirectory of include/ext.
2089 AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [
2090 AC_MSG_CHECKING([for std::allocator base class])
2091 GLIBCXX_ENABLE(libstdcxx-allocator,auto,[[[=KIND]]],
2092 [use KIND for target std::allocator base],
2093 [permit new|malloc|mt|bitmap|pool|yes|no|auto])
2095 # If they didn't use this option switch, or if they specified --enable
2096 # with no specific model, we'll have to look for one. If they
2097 # specified --disable (???), do likewise.
2098 if test $enable_libstdcxx_allocator = no ||
2099 test $enable_libstdcxx_allocator = yes;
2101 enable_libstdcxx_allocator=auto
2104 # Either a known package, or "auto". Auto implies the default choice
2105 # for a particular platform.
2106 enable_libstdcxx_allocator_flag=$enable_libstdcxx_allocator
2108 # Probe for host-specific support if no specific model is specified.
2110 if test $enable_libstdcxx_allocator_flag = auto; then
2111 case ${target_os} in
2112 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
2113 enable_libstdcxx_allocator_flag=new
2116 enable_libstdcxx_allocator_flag=new
2120 AC_MSG_RESULT($enable_libstdcxx_allocator_flag)
2123 # Set configure bits for specified locale package
2124 case ${enable_libstdcxx_allocator_flag} in
2126 ALLOCATOR_H=config/allocator/bitmap_allocator_base.h
2127 ALLOCATOR_NAME=__gnu_cxx::bitmap_allocator
2130 ALLOCATOR_H=config/allocator/malloc_allocator_base.h
2131 ALLOCATOR_NAME=__gnu_cxx::malloc_allocator
2134 ALLOCATOR_H=config/allocator/mt_allocator_base.h
2135 ALLOCATOR_NAME=__gnu_cxx::__mt_alloc
2138 ALLOCATOR_H=config/allocator/new_allocator_base.h
2139 ALLOCATOR_NAME=__gnu_cxx::new_allocator
2142 ALLOCATOR_H=config/allocator/pool_allocator_base.h
2143 ALLOCATOR_NAME=__gnu_cxx::__pool_alloc
2147 AC_SUBST(ALLOCATOR_H)
2148 AC_SUBST(ALLOCATOR_NAME)
2153 dnl Check for whether the Boost-derived checks should be turned on.
2155 dnl --enable-concept-checks turns them on.
2156 dnl --disable-concept-checks leaves them off.
2157 dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2158 dnl Where DEFAULT is either `yes' or `no'.
2160 AC_DEFUN([GLIBCXX_ENABLE_CONCEPT_CHECKS], [
2161 GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks])
2162 if test $enable_concept_checks = yes; then
2163 AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS, 1,
2164 [Define to use concept checking code from the boost libraries.])
2169 dnl Use extern templates.
2171 dnl --enable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 1
2172 dnl --disable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 0
2174 dnl + Usage: GLIBCXX_ENABLE_TEMPLATE[(DEFAULT)]
2175 dnl Where DEFAULT is `yes' or `no'.
2177 AC_DEFUN([GLIBCXX_ENABLE_EXTERN_TEMPLATE], [
2179 GLIBCXX_ENABLE(extern-template,$1,,[enable extern template])
2181 AC_MSG_CHECKING([for extern template support])
2182 AC_MSG_RESULT([$enable_extern_template])
2184 GLIBCXX_CONDITIONAL(ENABLE_EXTERN_TEMPLATE, test $enable_extern_template = yes)
2188 dnl Check for parallel mode pre-requisites, including OpenMP support.
2190 dnl + Usage: GLIBCXX_ENABLE_PARALLEL
2192 AC_DEFUN([GLIBCXX_ENABLE_PARALLEL], [
2196 # See if configured libgomp/omp.h exists. (libgomp may be in
2197 # noconfigdirs but not explicitly disabled.)
2198 if echo " ${TARGET_CONFIGDIRS} " | grep " libgomp " > /dev/null 2>&1 ; then
2199 enable_parallel=yes;
2201 AC_MSG_NOTICE([target-libgomp not built])
2204 AC_MSG_CHECKING([for parallel mode support])
2205 AC_MSG_RESULT([$enable_parallel])
2210 dnl Check for which I/O library to use: stdio, or something specific.
2212 dnl Default is stdio.
2214 AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [
2215 AC_MSG_CHECKING([for underlying I/O to use])
2216 GLIBCXX_ENABLE(cstdio,stdio,[[[=PACKAGE]]],
2217 [use target-specific I/O package], [permit stdio])
2219 # Now that libio has been removed, you can have any color you want as long
2220 # as it's black. This is one big no-op until other packages are added, but
2221 # showing the framework never hurts.
2222 case ${enable_cstdio} in
2224 CSTDIO_H=config/io/c_io_stdio.h
2225 BASIC_FILE_H=config/io/basic_file_stdio.h
2226 BASIC_FILE_CC=config/io/basic_file_stdio.cc
2227 AC_MSG_RESULT(stdio)
2232 AC_SUBST(BASIC_FILE_H)
2233 AC_SUBST(BASIC_FILE_CC)
2238 dnl Check for "unusual" flags to pass to the compiler while building.
2240 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
2241 dnl experimental flags such as -fpch, -fIMI, -Dfloat=char, etc.
2242 dnl --disable-cxx-flags passes nothing.
2243 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
2244 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
2245 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
2246 dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags)
2247 dnl If "default flags" is an empty string, the effect is the same
2248 dnl as --disable or --enable=no.
2250 AC_DEFUN([GLIBCXX_ENABLE_CXX_FLAGS], [dnl
2251 AC_MSG_CHECKING([for extra compiler flags for building])
2252 GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS],
2253 [pass compiler FLAGS when building library],
2254 [case "x$enable_cxx_flags" in
2255 xno | x) enable_cxx_flags= ;;
2257 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
2260 # Run through flags (either default or command-line) and set anything
2261 # extra (e.g., #defines) that must accompany particular g++ options.
2262 if test -n "$enable_cxx_flags"; then
2263 for f in $enable_cxx_flags; do
2267 *) # and we're trying to pass /what/ exactly?
2268 AC_MSG_ERROR([compiler flags start with a -]) ;;
2273 EXTRA_CXX_FLAGS="$enable_cxx_flags"
2274 AC_MSG_RESULT($EXTRA_CXX_FLAGS)
2275 AC_SUBST(EXTRA_CXX_FLAGS)
2280 dnl Check to see if debugging libraries are to be built.
2282 dnl --enable-libstdcxx-debug
2283 dnl builds a separate set of debugging libraries in addition to the
2284 dnl normal (shared, static) libstdc++ binaries.
2286 dnl --disable-libstdcxx-debug
2287 dnl builds only one (non-debug) version of libstdc++.
2289 dnl --enable-libstdcxx-debug-flags=FLAGS
2290 dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
2292 dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)]
2293 dnl Where DEFAULT is either `yes' or `no'.
2295 AC_DEFUN([GLIBCXX_ENABLE_DEBUG], [
2296 AC_MSG_CHECKING([for additional debug build])
2297 GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library])
2298 AC_MSG_RESULT($enable_libstdcxx_debug)
2299 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes)
2304 dnl Check for explicit debug flags.
2306 dnl --enable-libstdcxx-debug-flags='-O1'
2307 dnl is a general method for passing flags to be used when
2308 dnl building debug libraries with --enable-debug.
2310 dnl --disable-libstdcxx-debug-flags does nothing.
2311 dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
2312 dnl If "default flags" is an empty string, the effect is the same
2313 dnl as --disable or --enable=no.
2315 AC_DEFUN([GLIBCXX_ENABLE_DEBUG_FLAGS], [
2316 GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS],
2317 [pass compiler FLAGS when building debug library],
2318 [case "x$enable_libstdcxx_debug_flags" in
2319 xno | x) enable_libstdcxx_debug_flags= ;;
2321 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
2324 # Option parsed, now set things appropriately
2325 DEBUG_FLAGS="$enable_libstdcxx_debug_flags"
2326 AC_SUBST(DEBUG_FLAGS)
2328 AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS])
2333 dnl Check if the user only wants a freestanding library implementation.
2335 dnl --disable-hosted-libstdcxx will turn off most of the library build,
2336 dnl installing only the headers required by [17.4.1.3] and the language
2337 dnl support library. More than that will be built (to keep the Makefiles
2338 dnl conveniently clean), but not installed.
2341 dnl is_hosted (yes/no)
2344 dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0)
2346 AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [
2347 AC_ARG_ENABLE([hosted-libstdcxx],
2348 AC_HELP_STRING([--disable-hosted-libstdcxx],
2349 [only build freestanding C++ runtime support]),,
2352 enable_hosted_libstdcxx=no
2355 enable_hosted_libstdcxx=yes
2358 if test "$enable_hosted_libstdcxx" = no; then
2359 AC_MSG_NOTICE([Only freestanding libraries will be built])
2363 enable_libstdcxx_pch=no
2368 GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes)
2369 AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define,
2370 [Define to 1 if a full hosted library is built, or 0 if freestanding.])
2375 dnl Check if the user wants a non-verbose library implementation.
2377 dnl --disable-libstdcxx-verbose will turn off descriptive messages to
2378 dnl standard error on termination.
2381 dnl _GLIBCXX_VERBOSE (always defined, either to 1 or 0)
2383 AC_DEFUN([GLIBCXX_ENABLE_VERBOSE], [
2384 AC_ARG_ENABLE([libstdcxx-verbose],
2385 AC_HELP_STRING([--disable-libstdcxx-verbose],
2386 [disable termination messages to standard error]),,
2387 [enable_libstdcxx_verbose=yes])
2388 if test x"$enable_libstdcxx_verbose" = xyes; then
2391 AC_MSG_NOTICE([verbose termination messages are disabled])
2394 AC_DEFINE_UNQUOTED(_GLIBCXX_VERBOSE, $verbose_define,
2395 [Define to 1 if a verbose library is built, or 0 otherwise.])
2400 dnl Check for template specializations for the 'long long' type.
2401 dnl The result determines only whether 'long long' I/O is enabled; things
2402 dnl like numeric_limits<> specializations are always available.
2404 dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG
2405 dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined
2406 dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)]
2407 dnl Where DEFAULT is either `yes' or `no'.
2409 AC_DEFUN([GLIBCXX_ENABLE_LONG_LONG], [
2410 GLIBCXX_ENABLE(long-long,$1,,[enable template specializations for 'long long'])
2411 if test $enable_long_long = yes; then
2412 AC_DEFINE(_GLIBCXX_USE_LONG_LONG, 1,
2413 [Define if code specialized for long long should be used.])
2415 AC_MSG_CHECKING([for enabled long long specializations])
2416 AC_MSG_RESULT([$enable_long_long])
2421 dnl Check for decimal floating point.
2423 dnl http://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html#Decimal-Float
2425 dnl This checks to see if the host supports decimal floating point types.
2428 dnl _GLIBCXX_USE_DECIMAL_FLOAT
2430 AC_DEFUN([GLIBCXX_ENABLE_DECIMAL_FLOAT], [
2432 # Fake what AC_TRY_COMPILE does, without linking as this is
2433 # unnecessary for this test.
2435 cat > conftest.$ac_ext << EOF
2436 [#]line __oline__ "configure"
2446 AC_MSG_CHECKING([for ISO/IEC TR 24733 ])
2447 if AC_TRY_EVAL(ac_compile); then
2448 AC_DEFINE(_GLIBCXX_USE_DECIMAL_FLOAT, 1,
2449 [Define if ISO/IEC TR 24733 decimal floating point types are supported on this host.])
2454 AC_MSG_RESULT($enable_dfp)
2459 dnl Check for GNU 128-bit integer and floating point types.
2461 dnl Note: also checks that the types aren't standard types.
2464 dnl _GLIBCXX_USE_INT128
2465 dnl _GLIBCXX_USE_FLOAT128
2467 AC_DEFUN([GLIBCXX_ENABLE_INT128_FLOAT128], [
2472 # Fake what AC_TRY_COMPILE does, without linking as this is
2473 # unnecessary for this test.
2475 cat > conftest.$ac_ext << EOF
2476 [#]line __oline__ "configure"
2477 template<typename T1, typename T2>
2479 { typedef T2 type; };
2481 template<typename T>
2486 typename same<long, __int128>::type i1;
2487 typename same<long long, __int128>::type i2;
2491 AC_MSG_CHECKING([for __int128])
2492 if AC_TRY_EVAL(ac_compile); then
2493 AC_DEFINE(_GLIBCXX_USE_INT128, 1,
2494 [Define if __int128 is supported on this host.])
2499 AC_MSG_RESULT($enable_int128)
2502 cat > conftest.$ac_ext << EOF
2503 [#]line __oline__ "configure"
2504 template<typename T1, typename T2>
2506 { typedef T2 type; };
2508 template<typename T>
2513 typename same<double, __float128>::type f1;
2514 typename same<long double, __float128>::type f2;
2518 AC_MSG_CHECKING([for __float128])
2519 if AC_TRY_EVAL(ac_compile); then
2520 AC_DEFINE(_GLIBCXX_USE_FLOAT128, 1,
2521 [Define if __float128 is supported on this host.])
2526 AC_MSG_RESULT($enable_float128)
2533 dnl Check for template specializations for the 'wchar_t' type.
2535 dnl --enable-wchar_t defines _GLIBCXX_USE_WCHAR_T
2536 dnl --disable-wchar_t leaves _GLIBCXX_USE_WCHAR_T undefined
2537 dnl + Usage: GLIBCXX_ENABLE_WCHAR_T[(DEFAULT)]
2538 dnl Where DEFAULT is either `yes' or `no'.
2540 dnl Necessary support must also be present.
2542 AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [
2543 GLIBCXX_ENABLE(wchar_t,$1,,[enable template specializations for 'wchar_t'])
2545 # Test wchar.h for mbstate_t, which is needed for char_traits and fpos.
2546 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
2547 AC_MSG_CHECKING([for mbstate_t])
2548 AC_TRY_COMPILE([#include <wchar.h>],
2549 [mbstate_t teststate;],
2550 have_mbstate_t=yes, have_mbstate_t=no)
2551 AC_MSG_RESULT($have_mbstate_t)
2552 if test x"$have_mbstate_t" = xyes; then
2553 AC_DEFINE(HAVE_MBSTATE_T,1,[Define if mbstate_t exists in wchar.h.])
2556 # Test it always, for use in GLIBCXX_ENABLE_C99, together with
2558 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
2560 if test x"$enable_wchar_t" = x"yes"; then
2565 if test x"$ac_has_wchar_h" = xyes &&
2566 test x"$ac_has_wctype_h" = xyes; then
2567 AC_TRY_COMPILE([#include <wchar.h>
2628 ],[],[], [enable_wchar_t=no])
2636 if test x"$enable_wchar_t" = x"yes"; then
2637 AC_DEFINE(_GLIBCXX_USE_WCHAR_T, 1,
2638 [Define if code specialized for wchar_t should be used.])
2641 AC_MSG_CHECKING([for enabled wchar_t specializations])
2642 AC_MSG_RESULT([$enable_wchar_t])
2647 dnl Check to see if building and using a C++ precompiled header can be done.
2649 dnl --enable-libstdcxx-pch=yes
2650 dnl default, this shows intent to use stdc++.h.gch If it looks like it
2651 dnl may work, after some light-hearted attempts to puzzle out compiler
2652 dnl support, flip bits on in include/Makefile.am
2654 dnl --disable-libstdcxx-pch
2655 dnl turns off attempts to use or build stdc++.h.gch.
2658 dnl glibcxx_PCHFLAGS
2660 AC_DEFUN([GLIBCXX_ENABLE_PCH], [
2661 GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers])
2662 if test $enable_libstdcxx_pch = yes; then
2663 AC_CACHE_CHECK([for compiler with PCH support],
2664 [glibcxx_cv_prog_CXX_pch],
2665 [ac_save_CXXFLAGS="$CXXFLAGS"
2666 CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
2669 echo '#include <math.h>' > conftest.h
2670 if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \
2671 -o conftest.h.gch 1>&5 2>&1 &&
2672 echo '#error "pch failed"' > conftest.h &&
2673 echo '#include "conftest.h"' > conftest.cc &&
2674 $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ;
2676 glibcxx_cv_prog_CXX_pch=yes
2678 glibcxx_cv_prog_CXX_pch=no
2681 CXXFLAGS=$ac_save_CXXFLAGS
2684 enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch
2687 AC_MSG_CHECKING([for enabled PCH])
2688 AC_MSG_RESULT([$enable_libstdcxx_pch])
2690 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes)
2691 if test $enable_libstdcxx_pch = yes; then
2692 glibcxx_PCHFLAGS="-include bits/stdc++.h"
2696 AC_SUBST(glibcxx_PCHFLAGS)
2701 dnl Check for atomic builtins.
2703 dnl http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html
2705 dnl This checks to see if the host supports the compiler-generated
2706 dnl builtins for atomic operations for various integral sizes. Note, this
2707 dnl is intended to be an all-or-nothing switch, so all the atomic operations
2708 dnl that are used should be checked.
2711 dnl libgomp and libgfortran use a link test, see CHECK_SYNC_FETCH_AND_ADD.
2713 AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
2716 old_CXXFLAGS="$CXXFLAGS"
2718 # Do link tests if possible, instead asm tests, limited to some platforms
2719 # see discussion in PR target/40134, PR libstdc++/40133 and the thread
2720 # starting at http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00322.html
2721 atomic_builtins_link_tests=no
2722 if test x$gcc_no_link != xyes; then
2723 # Can do link tests. Limit to some tested platforms
2725 *-*-linux* | *-*-uclinux* | *-*-kfreebsd*-gnu | *-*-gnu*)
2726 atomic_builtins_link_tests=yes
2731 if test x$atomic_builtins_link_tests = xyes; then
2735 CXXFLAGS="$CXXFLAGS -fno-exceptions"
2737 AC_MSG_CHECKING([for atomic builtins for bool])
2738 AC_CACHE_VAL(glibcxx_cv_atomic_bool, [
2741 [typedef bool atomic_type;
2745 __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
2746 __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
2748 __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
2749 __atomic_load_n(&c1, __ATOMIC_RELAXED);
2751 [glibcxx_cv_atomic_bool=yes],
2752 [glibcxx_cv_atomic_bool=no])
2754 AC_MSG_RESULT($glibcxx_cv_atomic_bool)
2756 AC_MSG_CHECKING([for atomic builtins for short])
2757 AC_CACHE_VAL(glibcxx_cv_atomic_short, [
2760 [typedef short atomic_type;
2764 __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
2765 __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
2767 __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
2768 __atomic_load_n(&c1, __ATOMIC_RELAXED);
2770 [glibcxx_cv_atomic_short=yes],
2771 [glibcxx_cv_atomic_short=no])
2773 AC_MSG_RESULT($glibcxx_cv_atomic_short)
2775 AC_MSG_CHECKING([for atomic builtins for int])
2776 AC_CACHE_VAL(glibcxx_cv_atomic_int, [
2779 [typedef int atomic_type;
2783 __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
2784 __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
2786 __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
2787 __atomic_load_n(&c1, __ATOMIC_RELAXED);
2789 [glibcxx_cv_atomic_int=yes],
2790 [glibcxx_cv_atomic_int=no])
2792 AC_MSG_RESULT($glibcxx_cv_atomic_int)
2794 AC_MSG_CHECKING([for atomic builtins for long long])
2795 AC_CACHE_VAL(glibcxx_cv_atomic_long_long, [
2798 [typedef long long atomic_type;
2802 __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
2803 __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
2805 __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
2806 __atomic_load_n(&c1, __ATOMIC_RELAXED);
2808 [glibcxx_cv_atomic_long_long=yes],
2809 [glibcxx_cv_atomic_long_long=no])
2811 AC_MSG_RESULT($glibcxx_cv_atomic_long_long)
2817 # Compile unoptimized.
2820 # Fake what AC_TRY_COMPILE does.
2822 cat > conftest.$ac_ext << EOF
2823 [#]line __oline__ "configure"
2826 typedef bool atomic_type;
2830 __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
2831 __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
2833 __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
2834 __atomic_load_n(&c1, __ATOMIC_RELAXED);
2840 AC_MSG_CHECKING([for atomic builtins for bool])
2841 if AC_TRY_EVAL(ac_compile); then
2842 if grep __atomic_ conftest.s >/dev/null 2>&1 ; then
2843 glibcxx_cv_atomic_bool=no
2845 glibcxx_cv_atomic_bool=yes
2848 AC_MSG_RESULT($glibcxx_cv_atomic_bool)
2851 cat > conftest.$ac_ext << EOF
2852 [#]line __oline__ "configure"
2855 typedef short atomic_type;
2859 __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
2860 __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
2862 __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
2863 __atomic_load_n(&c1, __ATOMIC_RELAXED);
2869 AC_MSG_CHECKING([for atomic builtins for short])
2870 if AC_TRY_EVAL(ac_compile); then
2871 if grep __atomic_ conftest.s >/dev/null 2>&1 ; then
2872 glibcxx_cv_atomic_short=no
2874 glibcxx_cv_atomic_short=yes
2877 AC_MSG_RESULT($glibcxx_cv_atomic_short)
2880 cat > conftest.$ac_ext << EOF
2881 [#]line __oline__ "configure"
2884 // NB: _Atomic_word not necessarily int.
2885 typedef int atomic_type;
2889 __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
2890 __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
2892 __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
2893 __atomic_load_n(&c1, __ATOMIC_RELAXED);
2899 AC_MSG_CHECKING([for atomic builtins for int])
2900 if AC_TRY_EVAL(ac_compile); then
2901 if grep __atomic_ conftest.s >/dev/null 2>&1 ; then
2902 glibcxx_cv_atomic_int=no
2904 glibcxx_cv_atomic_int=yes
2907 AC_MSG_RESULT($glibcxx_cv_atomic_int)
2910 cat > conftest.$ac_ext << EOF
2911 [#]line __oline__ "configure"
2914 typedef long long atomic_type;
2918 __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
2919 __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
2921 __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
2922 __atomic_load_n(&c1, __ATOMIC_RELAXED);
2928 AC_MSG_CHECKING([for atomic builtins for long long])
2929 if AC_TRY_EVAL(ac_compile); then
2930 if grep __atomic_ conftest.s >/dev/null 2>&1 ; then
2931 glibcxx_cv_atomic_long_long=no
2933 glibcxx_cv_atomic_long_long=yes
2936 AC_MSG_RESULT($glibcxx_cv_atomic_long_long)
2941 CXXFLAGS="$old_CXXFLAGS"
2944 # Set atomicity_dir to builtins if all but the long long test above passes.
2945 if test $glibcxx_cv_atomic_bool = yes \
2946 && test $glibcxx_cv_atomic_short = yes \
2947 && test $glibcxx_cv_atomic_int = yes; then
2948 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1,
2949 [Define if the compiler supports C++11 atomics.])
2950 atomicity_dir=cpu/generic/atomicity_builtins
2953 # If still generic, set to mutex.
2954 if test $atomicity_dir = "cpu/generic" ; then
2955 atomicity_dir=cpu/generic/atomicity_mutex
2956 AC_MSG_WARN([No native atomic operations are provided for this platform.])
2957 if test "x$target_thread_file" = xsingle; then
2958 AC_MSG_WARN([They cannot be faked when thread support is disabled.])
2959 AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.])
2961 AC_MSG_WARN([They will be faked using a mutex.])
2962 AC_MSG_WARN([Performance of certain classes will degrade as a result.])
2970 dnl Check for exception handling support. If an explicit enable/disable
2971 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
2972 dnl target may or may not support call frame exceptions.
2974 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
2975 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
2976 dnl Neither one forces an attempt at detection.
2979 dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it
2981 AC_DEFUN([GLIBCXX_ENABLE_SJLJ_EXCEPTIONS], [
2982 AC_MSG_CHECKING([for exception model to use])
2985 GLIBCXX_ENABLE(sjlj-exceptions,auto,,
2986 [force use of builtin_setjmp for exceptions],
2987 [permit yes|no|auto])
2989 if test $enable_sjlj_exceptions = auto; then
2990 # Botheration. Now we've got to detect the exception model. Link tests
2991 # against libgcc.a are problematic since we've not been given proper -L
2992 # bits for single-tree newlib and libgloss.
2994 # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
2995 cat > conftest.$ac_ext << EOF
2996 [#]line __oline__ "configure"
3005 old_CXXFLAGS="$CXXFLAGS"
3007 if AC_TRY_EVAL(ac_compile); then
3008 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
3009 enable_sjlj_exceptions=yes
3010 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
3011 enable_sjlj_exceptions=no
3012 elif grep __cxa_end_cleanup conftest.s >/dev/null 2>&1 ; then
3013 enable_sjlj_exceptions=no
3016 CXXFLAGS="$old_CXXFLAGS"
3020 # This is a tad weird, for hysterical raisins. We have to map
3021 # enable/disable to two different models.
3022 case $enable_sjlj_exceptions in
3024 AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
3025 [Define if the compiler is configured for setjmp/longjmp exceptions.])
3026 ac_exception_model_name=sjlj
3029 ac_exception_model_name="call frame"
3032 AC_MSG_ERROR([unable to detect exception model])
3036 AC_MSG_RESULT($ac_exception_model_name)
3041 dnl Allow visibility attributes to be used on namespaces, objects, etc.
3043 dnl --enable-libstdcxx-visibility enables attempt to use visibility attributes.
3044 dnl --disable-libstdcxx-visibility turns off all use of visibility attributes.
3045 dnl + Usage: GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY[(DEFAULT)]
3046 dnl Where DEFAULT is 'yes'.
3048 AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY], [
3049 GLIBCXX_ENABLE(libstdcxx-visibility,$1,,[enables visibility safe usage])
3051 if test x$enable_libstdcxx_visibility = xyes ; then
3052 dnl all hail libgfortran
3053 dnl Check whether the target supports hidden visibility.
3054 AC_CACHE_CHECK([whether the target supports hidden visibility],
3055 glibcxx_cv_have_attribute_visibility, [
3056 save_CFLAGS="$CFLAGS"
3057 CFLAGS="$CFLAGS -Werror"
3058 AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }],
3059 [], glibcxx_cv_have_attribute_visibility=yes,
3060 glibcxx_cv_have_attribute_visibility=no)
3061 CFLAGS="$save_CFLAGS"])
3062 if test $glibcxx_cv_have_attribute_visibility = no; then
3063 enable_libstdcxx_visibility=no
3067 GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_libstdcxx_visibility = yes)
3068 AC_MSG_NOTICE([visibility supported: $enable_libstdcxx_visibility])
3073 dnl Add version tags to symbols in shared library (or not), additionally
3074 dnl marking other symbols as private/local (or not).
3076 dnl Sets libtool_VERSION, and determines shared library SONAME.
3078 dnl This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
3080 dnl --enable-symvers=style adds a version script to the linker call when
3081 dnl creating the shared library. The choice of version script is
3082 dnl controlled by 'style'.
3083 dnl --disable-symvers does not.
3085 dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)]
3086 dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to
3087 dnl choose a default style based on linker characteristics. Passing
3088 dnl 'no' disables versioning.
3090 AC_DEFUN([GLIBCXX_ENABLE_SYMVERS], [
3092 GLIBCXX_ENABLE(symvers,$1,[[[=STYLE]]],
3093 [enables symbol versioning of the shared library],
3094 [permit yes|no|gnu|gnu-versioned-namespace|darwin|darwin-export|sun])
3096 # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we
3097 # don't know enough about $LD to do tricks...
3098 AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES])
3099 # Sun style symbol versions needs GNU c++filt for make_sunver.pl to work
3100 # with extern "C++" in version scripts.
3101 AC_REQUIRE([GCC_PROG_GNU_CXXFILT])
3103 # Turn a 'yes' into a suitable default.
3104 if test x$enable_symvers = xyes ; then
3105 if test $enable_shared = no || test "x$LD" = x || test x$gcc_no_link = xyes; then
3108 if test $with_gnu_ld = yes ; then
3109 case ${target_os} in
3111 enable_symvers=no ;;
3113 enable_symvers=gnu ;;
3116 case ${target_os} in
3118 enable_symvers=darwin ;;
3119 # Sun symbol versioning exists since Solaris 2.5.
3120 solaris2.[[5-9]]* | solaris2.1[[0-9]]*)
3121 # make_sunver.pl needs GNU c++filt to support extern "C++" in
3122 # version scripts, so disable symbol versioning if none can be
3124 if test -z "$ac_cv_path_CXXFILT"; then
3125 AC_MSG_WARN([=== You have requested Sun symbol versioning, but])
3126 AC_MSG_WARN([=== no GNU c++filt could be found.])
3127 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3134 enable_symvers=no ;;
3140 # Check to see if 'darwin' or 'darwin-export' can win.
3141 if test x$enable_symvers = xdarwin-export ; then
3142 enable_symvers=darwin
3145 # Check if 'sun' was requested on non-Solaris 2 platforms.
3146 if test x$enable_symvers = xsun ; then
3147 case ${target_os} in
3153 AC_MSG_WARN([=== You have requested Sun symbol versioning, but])
3154 AC_MSG_WARN([=== you are not targetting Solaris 2.])
3155 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3161 # Check to see if 'gnu' can win.
3162 if test $enable_symvers = gnu ||
3163 test $enable_symvers = gnu-versioned-namespace ||
3164 test $enable_symvers = sun; then
3165 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
3166 AC_MSG_CHECKING([for shared libgcc])
3167 ac_save_CFLAGS="$CFLAGS"
3169 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no)
3170 CFLAGS="$ac_save_CFLAGS"
3171 if test $glibcxx_shared_libgcc = no; then
3172 cat > conftest.c <<EOF
3173 int main (void) { return 0; }
3176 glibcxx_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
3177 -shared -shared-libgcc -o conftest.so \
3178 conftest.c -v 2>&1 >/dev/null \
3179 | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'`
3181 rm -f conftest.c conftest.so
3182 if test x${glibcxx_libgcc_s_suffix+set} = xset; then
3183 CFLAGS=" -lgcc_s$glibcxx_libgcc_s_suffix"
3184 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes)
3185 CFLAGS="$ac_save_CFLAGS"
3188 AC_MSG_RESULT($glibcxx_shared_libgcc)
3190 # For GNU ld, we need at least this version. The format is described in
3191 # GLIBCXX_CHECK_LINKER_FEATURES above.
3192 glibcxx_min_gnu_ld_version=21400
3194 # If no shared libgcc, can't win.
3195 if test $glibcxx_shared_libgcc != yes; then
3196 AC_MSG_WARN([=== You have requested GNU symbol versioning, but])
3197 AC_MSG_WARN([=== you are not building a shared libgcc_s.])
3198 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3200 elif test $with_gnu_ld != yes && test $enable_symvers = sun; then
3201 : All interesting versions of Sun ld support sun style symbol versioning.
3202 elif test $with_gnu_ld != yes ; then
3204 AC_MSG_WARN([=== You have requested GNU symbol versioning, but])
3205 AC_MSG_WARN([=== you are not using the GNU linker.])
3206 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3208 elif test $glibcxx_ld_is_gold = yes ; then
3209 : All versions of gold support symbol versioning.
3210 elif test $glibcxx_gnu_ld_version -lt $glibcxx_min_gnu_ld_version ; then
3211 # The right tools, the right setup, but too old. Fallbacks?
3212 AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for)
3213 AC_MSG_WARN(=== full symbol versioning support in this release of GCC.)
3214 AC_MSG_WARN(=== You would need to upgrade your binutils to version)
3215 AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.)
3216 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3221 # For libtool versioning info, format is CURRENT:REVISION:AGE
3222 libtool_VERSION=6:18:0
3224 # Everything parsed; figure out what files and settings to use.
3225 case $enable_symvers in
3227 SYMVER_FILE=config/abi/pre/none.ver
3230 SYMVER_FILE=config/abi/pre/gnu.ver
3231 AC_DEFINE(_GLIBCXX_SYMVER_GNU, 1,
3232 [Define to use GNU versioning in the shared library.])
3234 gnu-versioned-namespace)
3235 libtool_VERSION=7:0:0
3236 SYMVER_FILE=config/abi/pre/gnu-versioned-namespace.ver
3237 AC_DEFINE(_GLIBCXX_SYMVER_GNU_NAMESPACE, 1,
3238 [Define to use GNU namespace versioning in the shared library.])
3241 SYMVER_FILE=config/abi/pre/gnu.ver
3242 AC_DEFINE(_GLIBCXX_SYMVER_DARWIN, 1,
3243 [Define to use darwin versioning in the shared library.])
3246 SYMVER_FILE=config/abi/pre/gnu.ver
3247 AC_DEFINE(_GLIBCXX_SYMVER_SUN, 1,
3248 [Define to use Sun versioning in the shared library.])
3252 if test x$enable_symvers != xno ; then
3253 AC_DEFINE(_GLIBCXX_SYMVER, 1,
3254 [Define to use symbol versioning in the shared library.])
3257 AC_CACHE_CHECK([whether the target supports .symver directive],
3258 glibcxx_cv_have_as_symver_directive, [
3259 AC_TRY_COMPILE([void foo (void); __asm (".symver foo, bar@SYMVER");],
3260 [], glibcxx_cv_have_as_symver_directive=yes,
3261 glibcxx_cv_have_as_symver_directive=no)])
3262 if test $glibcxx_cv_have_as_symver_directive = yes; then
3263 AC_DEFINE(HAVE_AS_SYMVER_DIRECTIVE, 1,
3264 [Define to 1 if the target assembler supports .symver directive.])
3267 AC_SUBST(SYMVER_FILE)
3268 AC_SUBST(port_specific_symbol_files)
3269 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS, test $enable_symvers != no)
3270 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU, test $enable_symvers = gnu)
3271 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU_NAMESPACE, test $enable_symvers = gnu-versioned-namespace)
3272 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_DARWIN, test $enable_symvers = darwin)
3273 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SUN, test $enable_symvers = sun)
3274 AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers)
3276 if test $enable_symvers != no ; then
3277 case ${target_os} in
3278 # The Solaris 2 runtime linker doesn't support the GNU extension of
3279 # binding the same symbol to different versions
3282 # Other platforms with GNU symbol versioning (GNU/Linux, more?) do.
3284 AC_DEFINE(HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT, 1,
3285 [Define to 1 if the target runtime linker supports binding the same symbol to different versions.])
3290 # Now, set up compatibility support, if any.
3291 # In addition, need this to deal with std::size_t mangling in
3292 # src/compatibility.cc. In a perfect world, could use
3293 # typeid(std::size_t).name()[0] to do direct substitution.
3294 AC_MSG_CHECKING([for size_t as unsigned int])
3295 ac_save_CFLAGS="$CFLAGS"
3297 AC_TRY_COMPILE(, [__SIZE_TYPE__* stp; unsigned int* uip; stp = uip;],
3298 [glibcxx_size_t_is_i=yes], [glibcxx_size_t_is_i=no])
3299 CFLAGS=$ac_save_CFLAGS
3300 if test "$glibcxx_size_t_is_i" = yes; then
3301 AC_DEFINE(_GLIBCXX_SIZE_T_IS_UINT, 1, [Define if size_t is unsigned int.])
3303 AC_MSG_RESULT([$glibcxx_size_t_is_i])
3305 AC_MSG_CHECKING([for ptrdiff_t as int])
3306 ac_save_CFLAGS="$CFLAGS"
3308 AC_TRY_COMPILE(, [__PTRDIFF_TYPE__* ptp; int* ip; ptp = ip;],
3309 [glibcxx_ptrdiff_t_is_i=yes], [glibcxx_ptrdiff_t_is_i=no])
3310 CFLAGS=$ac_save_CFLAGS
3311 if test "$glibcxx_ptrdiff_t_is_i" = yes; then
3312 AC_DEFINE(_GLIBCXX_PTRDIFF_T_IS_INT, 1, [Define if ptrdiff_t is int.])
3314 AC_MSG_RESULT([$glibcxx_ptrdiff_t_is_i])
3319 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
3320 dnl We must stage the required headers so that they will be installed
3321 dnl with the library (unlike libgcc, the STL implementation is provided
3322 dnl solely within headers). Since we must not inject random user-space
3323 dnl macro names into user-provided C++ code, we first stage into <file>-in
3324 dnl and process to <file> with an output command. The reason for a two-
3325 dnl stage process here is to correctly handle $srcdir!=$objdir without
3326 dnl having to write complex code (the sed commands to clean the macro
3327 dnl namespace are complex and fragile enough as it is). We must also
3328 dnl add a relative path so that -I- is supported properly.
3333 AC_DEFUN([GLIBCXX_ENABLE_THREADS], [
3334 AC_MSG_CHECKING([for thread model used by GCC])
3335 target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
3336 AC_MSG_RESULT([$target_thread_file])
3337 GCC_AC_THREAD_HEADER([$target_thread_file])
3342 dnl Check if gthread implementation defines the types and functions
3343 dnl required by the c++0x thread library. Conforming gthread
3344 dnl implementations can define __GTHREADS_CXX0X to enable use with c++0x.
3346 dnl GLIBCXX_ENABLE_SYMVERS must be done before this.
3348 AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [
3349 GLIBCXX_ENABLE(libstdcxx-threads,auto,,[enable C++11 threads support])
3351 if test x$enable_libstdcxx_threads = xauto ||
3352 test x$enable_libstdcxx_threads = xyes; then
3357 ac_save_CXXFLAGS="$CXXFLAGS"
3358 CXXFLAGS="$CXXFLAGS -fno-exceptions \
3359 -I${toplevel_srcdir}/libgcc -I${toplevel_builddir}/libgcc"
3361 target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
3362 case $target_thread_file in
3364 CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS"
3367 AC_MSG_CHECKING([whether it can be safely assumed that mutex_timedlock is available])
3369 AC_TRY_COMPILE([#include <unistd.h>],
3371 // In case of POSIX threads check _POSIX_TIMEOUTS.
3372 #if (defined(_PTHREADS) \
3373 && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0))
3376 ], [ac_gthread_use_mutex_timedlock=1], [ac_gthread_use_mutex_timedlock=0])
3378 AC_DEFINE_UNQUOTED(_GTHREAD_USE_MUTEX_TIMEDLOCK, $ac_gthread_use_mutex_timedlock,
3379 [Define to 1 if mutex_timedlock is available.])
3381 if test $ac_gthread_use_mutex_timedlock = 1 ; then res_mutex_timedlock=yes ;
3382 else res_mutex_timedlock=no ; fi
3383 AC_MSG_RESULT([$res_mutex_timedlock])
3385 AC_MSG_CHECKING([for gthreads library])
3387 AC_TRY_COMPILE([#include "gthr.h"],
3389 #ifndef __GTHREADS_CXX0X
3392 ], [case $target_os in
3393 # gthreads support breaks symbol versioning on Solaris 9 (PR
3396 if test x$enable_symvers = xno; then
3398 elif test x$enable_libstdcxx_threads = xyes; then
3399 AC_MSG_WARN([You have requested C++11 threads support, but])
3400 AC_MSG_WARN([this breaks symbol versioning.])
3410 [ac_has_gthreads=no])
3415 AC_MSG_RESULT([$ac_has_gthreads])
3417 if test x"$ac_has_gthreads" = x"yes"; then
3418 AC_DEFINE(_GLIBCXX_HAS_GTHREADS, 1,
3419 [Define if gthreads library is available.])
3422 CXXFLAGS="$ac_save_CXXFLAGS"
3427 # Check whether LC_MESSAGES is available in <locale.h>.
3428 # Ulrich Drepper <drepper@cygnus.com>, 1995.
3430 # This file file be copied and used freely without restrictions. It can
3431 # be used in projects which are not available under the GNU Public License
3432 # but which still want to provide support for the GNU gettext functionality.
3433 # Please note that the actual code is *not* freely available.
3434 AC_DEFUN([AC_LC_MESSAGES], [
3435 AC_CHECK_HEADER(locale.h, [
3436 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
3437 [AC_TRY_COMPILE([#include <locale.h>], [return LC_MESSAGES],
3438 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
3439 if test $ac_cv_val_LC_MESSAGES = yes; then
3440 AC_DEFINE(HAVE_LC_MESSAGES, 1,
3441 [Define if LC_MESSAGES is available in <locale.h>.])
3447 dnl Check whether rdrand is supported in the assembler.
3448 AC_DEFUN([GLIBCXX_CHECK_X86_RDRAND], [
3449 AC_MSG_CHECKING([for rdrand support in assembler])
3450 AC_CACHE_VAL(ac_cv_x86_rdrand, [
3455 AC_TRY_COMPILE(, [asm("rdrand %eax");],
3456 [ac_cv_x86_rdrand=yes], [ac_cv_x86_rdrand=no])
3459 if test $ac_cv_x86_rdrand = yes; then
3460 AC_DEFINE(_GLIBCXX_X86_RDRAND, 1,
3461 [ Defined if as can handle rdrand. ])
3463 AC_MSG_RESULT($ac_cv_x86_rdrand)
3467 dnl Check whether get_nprocs is available in <sys/sysinfo.h>, and define _GLIBCXX_USE_GET_NPROCS.
3469 AC_DEFUN([GLIBCXX_CHECK_GET_NPROCS], [
3473 ac_save_CXXFLAGS="$CXXFLAGS"
3474 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3476 AC_MSG_CHECKING([for get_nprocs])
3477 AC_CACHE_VAL(glibcxx_cv_GET_NPROCS, [
3478 GCC_TRY_COMPILE_OR_LINK(
3479 [#include <sys/sysinfo.h>],
3480 [int n = get_nprocs();],
3481 [glibcxx_cv_GET_NPROCS=yes],
3482 [glibcxx_cv_GET_NPROCS=no])
3484 if test $glibcxx_cv_GET_NPROCS = yes; then
3485 AC_DEFINE(_GLIBCXX_USE_GET_NPROCS, 1, [Define if get_nprocs is available in <sys/sysinfo.h>.])
3487 AC_MSG_RESULT($glibcxx_cv_GET_NPROCS)
3489 CXXFLAGS="$ac_save_CXXFLAGS"
3494 dnl Check whether sysconf(_SC_NPROCESSORS_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROCESSORS_ONLN.
3496 AC_DEFUN([GLIBCXX_CHECK_SC_NPROCESSORS_ONLN], [
3500 ac_save_CXXFLAGS="$CXXFLAGS"
3501 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3503 AC_MSG_CHECKING([for _SC_NPROCESSORS_ONLN])
3504 AC_CACHE_VAL(glibcxx_cv_SC_NPROCESSORS_ONLN, [
3505 GCC_TRY_COMPILE_OR_LINK(
3506 [#include <unistd.h>],
3507 [int n = sysconf(_SC_NPROCESSORS_ONLN);],
3508 [glibcxx_cv_SC_NPROCESSORS_ONLN=yes],
3509 [glibcxx_cv_SC_NPROCESSORS_ONLN=no])
3511 if test $glibcxx_cv_SC_NPROCESSORS_ONLN = yes; then
3512 AC_DEFINE(_GLIBCXX_USE_SC_NPROCESSORS_ONLN, 1, [Define if _SC_NPROCESSORS_ONLN is available in <unistd.h>.])
3514 AC_MSG_RESULT($glibcxx_cv_SC_NPROCESSORS_ONLN)
3516 CXXFLAGS="$ac_save_CXXFLAGS"
3521 dnl Check whether sysconf(_SC_NPROC_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROC_ONLN.
3523 AC_DEFUN([GLIBCXX_CHECK_SC_NPROC_ONLN], [
3527 ac_save_CXXFLAGS="$CXXFLAGS"
3528 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3530 AC_MSG_CHECKING([for _SC_NPROC_ONLN])
3531 AC_CACHE_VAL(glibcxx_cv_SC_NPROC_ONLN, [
3532 GCC_TRY_COMPILE_OR_LINK(
3533 [#include <unistd.h>],
3534 [int n = sysconf(_SC_NPROC_ONLN);],
3535 [glibcxx_cv_SC_NPROC_ONLN=yes],
3536 [glibcxx_cv_SC_NPROC_ONLN=no])
3538 if test $glibcxx_cv_SC_NPROC_ONLN = yes; then
3539 AC_DEFINE(_GLIBCXX_USE_SC_NPROC_ONLN, 1, [Define if _SC_NPROC_ONLN is available in <unistd.h>.])
3541 AC_MSG_RESULT($glibcxx_cv_SC_NPROC_ONLN)
3543 CXXFLAGS="$ac_save_CXXFLAGS"
3548 dnl Check whether pthread_num_processors_np is available in <pthread.h>, and define _GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP.
3550 AC_DEFUN([GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP], [
3554 ac_save_CXXFLAGS="$CXXFLAGS"
3555 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3557 AC_MSG_CHECKING([for pthreads_num_processors_np])
3558 AC_CACHE_VAL(glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP, [
3559 GCC_TRY_COMPILE_OR_LINK(
3560 [#include <pthread.h>],
3561 [int n = pthread_num_processors_np();],
3562 [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=yes],
3563 [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=no])
3565 if test $glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP = yes; then
3566 AC_DEFINE(_GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP, 1, [Define if pthreads_num_processors_np is available in <pthread.h>.])
3568 AC_MSG_RESULT($glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP)
3570 CXXFLAGS="$ac_save_CXXFLAGS"
3575 dnl Check whether sysctl is available in <pthread.h>, and define _GLIBCXX_USE_SYSCTL_HW_NCPU.
3577 AC_DEFUN([GLIBCXX_CHECK_SYSCTL_HW_NCPU], [
3581 ac_save_CXXFLAGS="$CXXFLAGS"
3582 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3584 AC_MSG_CHECKING([for hw.ncpu sysctl])
3585 AC_CACHE_VAL(glibcxx_cv_SYSCTL_HW_NCPU, [
3586 GCC_TRY_COMPILE_OR_LINK(
3589 #include <sys/sysctl.h>
3593 size_t size = sizeof(count);
3594 int mib[] = { CTL_HW, HW_NCPU };
3595 sysctl(mib, 2, &count, &size, NULL, 0);
3597 [glibcxx_cv_SYSCTL_HW_NCPU=yes],
3598 [glibcxx_cv_SYSCTL_HW_NCPU=no])
3600 if test $glibcxx_cv_SYSCTL_HW_NCPU = yes; then
3601 AC_DEFINE(_GLIBCXX_USE_SYSCTL_HW_NCPU, 1, [Define if sysctl(), CTL_HW and HW_NCPU are available in <sys/sysctl.h>.])
3603 AC_MSG_RESULT($glibcxx_cv_SYSCTL_HW_NCPU)
3605 CXXFLAGS="$ac_save_CXXFLAGS"
3610 dnl Check to see if python pretty printing can be activated.
3612 dnl --with-python-dir=dir
3613 dnl installs directory into $prefix/dir
3614 AC_DEFUN([GLIBCXX_ENABLE_PYTHON], [
3616 AC_MSG_CHECKING([for custom python install directory])
3617 AC_ARG_WITH([python-dir],
3618 AS_HELP_STRING([--with-python-dir],
3619 [the location to install Python modules. This path is relative starting from the prefix.]),
3620 [with_python_dir=$withval], [with_python_dir="no"])
3621 AC_MSG_RESULT(${with_python_dir})
3623 # Needed for installing Python modules during make install.
3624 python_mod_dir="${with_python_dir}"
3625 AC_SUBST(python_mod_dir)
3626 GLIBCXX_CONDITIONAL(ENABLE_PYTHONDIR, test $python_mod_dir != no)
3630 dnl Check to see if -Werror is disabled.
3632 dnl --enable-werror/--disable-werror
3633 AC_DEFUN([GLIBCXX_ENABLE_WERROR], [
3634 AC_MSG_CHECKING([for -Werror])
3635 GLIBCXX_ENABLE(werror,$1,,[turns on -Werror])
3636 AC_MSG_RESULT($enable_werror)
3637 GLIBCXX_CONDITIONAL(ENABLE_WERROR, test $enable_werror = yes)
3641 # Macros from the top-level gcc directory.
3642 m4_include([../config/gc++filt.m4])
3643 m4_include([../config/tls.m4])
3644 m4_include([../config/gthr.m4])