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($ac_fdsections)
167 AC_SUBST(SECTION_FLAGS)
172 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
173 dnl the native linker is in use, all variables will be defined to something
174 dnl safe (like an empty string).
177 dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible
178 dnl OPT_LDFLAGS='-Wl,-O1' and '-z,relro' if possible
179 dnl LD (as a side effect of testing)
182 dnl glibcxx_ld_is_gold (set to "no" or "yes")
183 dnl glibcxx_gnu_ld_version (possibly)
185 dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will
186 dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems.
188 AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [
189 # If we're not using GNU ld, then there's no point in even trying these
190 # tests. Check for that first. We should have already tested for gld
191 # by now (in libtool), but require it now just to be safe...
192 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
193 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
194 AC_REQUIRE([AC_PROG_LD])
195 AC_REQUIRE([AC_PROG_AWK])
197 # The name set by libtool depends on the version of libtool. Shame on us
198 # for depending on an impl detail, but c'est la vie. Older versions used
199 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
200 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
201 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
202 # set (hence we're using an older libtool), then set it.
203 if test x${with_gnu_ld+set} != xset; then
204 if test x${ac_cv_prog_gnu_ld+set} != xset; then
205 # We got through "ac_require(ac_prog_ld)" and still not set? Huh?
208 with_gnu_ld=$ac_cv_prog_gnu_ld
212 # Start by getting the version number. I think the libtool test already
213 # does some of this, but throws away the result.
214 glibcxx_ld_is_gold=no
215 if test x"$with_gnu_ld" = x"yes"; then
216 AC_MSG_CHECKING([for ld version])
218 if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
219 glibcxx_ld_is_gold=yes
221 ldver=`$LD --version 2>/dev/null |
222 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'`
224 glibcxx_gnu_ld_version=`echo $ldver | \
225 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
226 AC_MSG_RESULT($glibcxx_gnu_ld_version)
230 glibcxx_have_gc_sections=no
231 if test "$glibcxx_ld_is_gold" = "yes"; then
232 if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
233 glibcxx_have_gc_sections=yes
236 glibcxx_gcsections_min_ld=21602
237 if test x"$with_gnu_ld" = x"yes" &&
238 test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
239 glibcxx_have_gc_sections=yes
242 if test "$glibcxx_have_gc_sections" = "yes"; then
243 # Sufficiently young GNU ld it is! Joy and bunny rabbits!
244 # NB: This flag only works reliably after 2.16.1. Configure tests
245 # for this are difficult, so hard wire a value that should work.
247 ac_test_CFLAGS="${CFLAGS+set}"
248 ac_save_CFLAGS="$CFLAGS"
249 CFLAGS='-Wl,--gc-sections'
251 # Check for -Wl,--gc-sections
252 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
253 AC_TRY_LINK([ int one(void) { return 1; }
254 int two(void) { return 2; }
255 ], [ two(); ] , [ac_gcsections=yes], [ac_gcsections=no])
256 if test "$ac_gcsections" = "yes"; then
259 if $CC -c conftest.c; then
260 if $LD --gc-sections -o conftest conftest.o 2>&1 | \
261 grep "Warning: gc-sections option ignored" > /dev/null; then
265 rm -f conftest.c conftest.o conftest
267 if test "$ac_gcsections" = "yes"; then
268 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
270 AC_MSG_RESULT($ac_gcsections)
272 if test "$ac_test_CFLAGS" = set; then
273 CFLAGS="$ac_save_CFLAGS"
275 # this is the suspicious part
281 # Note this is only for shared objects.
283 if test x"$with_gnu_ld" = x"yes"; then
284 AC_MSG_CHECKING([for ld that supports -Wl,-z,relro])
285 cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
286 if test -n "$cxx_z_relo"; then
287 OPT_LDFLAGS="-Wl,-z,relro"
290 AC_MSG_RESULT($ac_ld_relro)
293 # Set linker optimization flags.
294 if test x"$with_gnu_ld" = x"yes"; then
295 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
298 AC_SUBST(SECTION_LDFLAGS)
299 AC_SUBST(OPT_LDFLAGS)
304 dnl Check for headers for, and arguments to, the setrlimit() function.
305 dnl Used only in testsuite_hooks.h. Called from GLIBCXX_CONFIGURE_TESTSUITE.
308 dnl _GLIBCXX_RES_LIMITS if we can set artificial resource limits
309 dnl various HAVE_LIMIT_* for individual limit names
311 AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT_ancilliary], [
312 AC_MSG_CHECKING([for RLIMIT_$1])
315 #include <sys/time.h>
316 #include <sys/resource.h>
318 [ int f = RLIMIT_$1 ; ],
319 [glibcxx_mresult=1], [glibcxx_mresult=0])
320 AC_DEFINE_UNQUOTED(HAVE_LIMIT_$1, $glibcxx_mresult,
321 [Only used in build directory testsuite_hooks.h.])
322 if test $glibcxx_mresult = 1 ; then res=yes ; else res=no ; fi
326 AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT], [
327 setrlimit_have_headers=yes
328 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
330 [setrlimit_have_headers=no])
331 # If don't have the headers, then we can't run the tests now, and we
332 # won't be seeing any of these during testsuite compilation.
333 if test $setrlimit_have_headers = yes; then
334 # Can't do these in a loop, else the resulting syntax is wrong.
335 GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA)
336 GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS)
337 GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM)
338 GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS)
339 GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE)
341 # Check for rlimit, setrlimit.
342 AC_CACHE_VAL(glibcxx_cv_setrlimit, [
345 #include <sys/time.h>
346 #include <sys/resource.h>
350 [glibcxx_cv_setrlimit=yes], [glibcxx_cv_setrlimit=no])
354 AC_MSG_CHECKING([for testsuite resource limits support])
355 if test $setrlimit_have_headers = yes && test $glibcxx_cv_setrlimit = yes; then
357 AC_DEFINE(_GLIBCXX_RES_LIMITS, 1,
358 [Define if using setrlimit to set resource limits during
363 AC_MSG_RESULT($ac_res_limits)
368 dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>.
369 dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately.
371 AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [
375 ac_save_CXXFLAGS="$CXXFLAGS"
376 CXXFLAGS="$CXXFLAGS -fno-exceptions"
378 AC_MSG_CHECKING([for S_ISREG or S_IFREG])
379 AC_CACHE_VAL(glibcxx_cv_S_ISREG, [
380 GCC_TRY_COMPILE_OR_LINK(
381 [#include <sys/stat.h>],
384 S_ISREG(buffer.st_mode);],
385 [glibcxx_cv_S_ISREG=yes],
386 [glibcxx_cv_S_ISREG=no])
388 AC_CACHE_VAL(glibcxx_cv_S_IFREG, [
389 GCC_TRY_COMPILE_OR_LINK(
390 [#include <sys/stat.h>],
393 S_IFREG & buffer.st_mode;],
394 [glibcxx_cv_S_IFREG=yes],
395 [glibcxx_cv_S_IFREG=no])
398 if test $glibcxx_cv_S_ISREG = yes; then
399 AC_DEFINE(HAVE_S_ISREG, 1,
400 [Define if S_IFREG is available in <sys/stat.h>.])
402 elif test $glibcxx_cv_S_IFREG = yes; then
403 AC_DEFINE(HAVE_S_IFREG, 1,
404 [Define if S_IFREG is available in <sys/stat.h>.])
409 CXXFLAGS="$ac_save_CXXFLAGS"
415 dnl Check whether poll is available in <poll.h>, and define HAVE_POLL.
417 AC_DEFUN([GLIBCXX_CHECK_POLL], [
421 ac_save_CXXFLAGS="$CXXFLAGS"
422 CXXFLAGS="$CXXFLAGS -fno-exceptions"
424 AC_MSG_CHECKING([for poll])
425 AC_CACHE_VAL(glibcxx_cv_POLL, [
426 GCC_TRY_COMPILE_OR_LINK(
428 [struct pollfd pfd[1];
429 pfd[0].events = POLLIN;
431 [glibcxx_cv_POLL=yes],
432 [glibcxx_cv_POLL=no])
434 if test $glibcxx_cv_POLL = yes; then
435 AC_DEFINE(HAVE_POLL, 1, [Define if poll is available in <poll.h>.])
437 AC_MSG_RESULT($glibcxx_cv_POLL)
439 CXXFLAGS="$ac_save_CXXFLAGS"
445 dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV.
447 AC_DEFUN([GLIBCXX_CHECK_WRITEV], [
451 ac_save_CXXFLAGS="$CXXFLAGS"
452 CXXFLAGS="$CXXFLAGS -fno-exceptions"
454 AC_MSG_CHECKING([for writev])
455 AC_CACHE_VAL(glibcxx_cv_WRITEV, [
456 GCC_TRY_COMPILE_OR_LINK(
457 [#include <sys/uio.h>],
458 [struct iovec iov[2];
460 [glibcxx_cv_WRITEV=yes],
461 [glibcxx_cv_WRITEV=no])
463 if test $glibcxx_cv_WRITEV = yes; then
464 AC_DEFINE(HAVE_WRITEV, 1, [Define if writev is available in <sys/uio.h>.])
466 AC_MSG_RESULT($glibcxx_cv_WRITEV)
468 CXXFLAGS="$ac_save_CXXFLAGS"
474 dnl Check whether int64_t is available in <stdint.h>, and define HAVE_INT64_T.
475 dnl Also check whether int64_t is actually a typedef to long or long long.
477 AC_DEFUN([GLIBCXX_CHECK_INT64_T], [
482 AC_MSG_CHECKING([for int64_t])
483 AC_CACHE_VAL(glibcxx_cv_INT64_T, [
485 [#include <stdint.h>],
487 [glibcxx_cv_INT64_T=yes],
488 [glibcxx_cv_INT64_T=no])
491 if test $glibcxx_cv_INT64_T = yes; then
492 AC_DEFINE(HAVE_INT64_T, 1, [Define if int64_t is available in <stdint.h>.])
493 AC_MSG_RESULT($glibcxx_cv_INT64_T)
495 AC_MSG_CHECKING([for int64_t as long])
496 AC_CACHE_VAL(glibcxx_cv_int64_t_long, [
499 template<typename, typename> struct same { enum { value = -1 }; };
500 template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; };
501 int array[same<int64_t, long>::value];], [],
502 [glibcxx_cv_int64_t_long=yes], [glibcxx_cv_int64_t_long=no])
505 if test $glibcxx_cv_int64_t_long = yes; then
506 AC_DEFINE(HAVE_INT64_T_LONG, 1, [Define if int64_t is a long.])
507 AC_MSG_RESULT($glibcxx_cv_int64_t_long)
510 AC_MSG_CHECKING([for int64_t as long long])
511 AC_CACHE_VAL(glibcxx_cv_int64_t_long_long, [
514 template<typename, typename> struct same { enum { value = -1 }; };
515 template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; };
516 int array[same<int64_t, long long>::value];], [],
517 [glibcxx_cv_int64_t_long_long=yes], [glibcxx_cv_int64_t_long_long=no])
520 if test $glibcxx_cv_int64_t_long_long = yes; then
521 AC_DEFINE(HAVE_INT64_T_LONG_LONG, 1, [Define if int64_t is a long long.])
522 AC_MSG_RESULT($glibcxx_cv_int64_t_long_long)
531 dnl Check whether LFS support is available.
533 AC_DEFUN([GLIBCXX_CHECK_LFS], [
536 ac_save_CXXFLAGS="$CXXFLAGS"
537 CXXFLAGS="$CXXFLAGS -fno-exceptions"
538 AC_MSG_CHECKING([for LFS support])
539 AC_CACHE_VAL(glibcxx_cv_LFS, [
540 GCC_TRY_COMPILE_OR_LINK(
543 #include <sys/stat.h>
547 fseeko64(fp, 0, SEEK_CUR);
549 lseek64(1, 0, SEEK_CUR);
552 [glibcxx_cv_LFS=yes],
555 if test $glibcxx_cv_LFS = yes; then
556 AC_DEFINE(_GLIBCXX_USE_LFS, 1, [Define if LFS support is available.])
558 AC_MSG_RESULT($glibcxx_cv_LFS)
559 CXXFLAGS="$ac_save_CXXFLAGS"
565 dnl Check for whether a fully dynamic basic_string implementation should
566 dnl be turned on, that does not put empty objects in per-process static
567 dnl memory (mostly useful together with shared memory allocators, see PR
568 dnl libstdc++/16612 for details).
570 dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 1
571 dnl --disable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 0
572 dnl otherwise undefined
573 dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)]
574 dnl Where DEFAULT is either `yes' or `no'.
576 AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [
577 GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory])
578 if test $enable_fully_dynamic_string = yes; then
579 enable_fully_dynamic_string_def=1
581 enable_fully_dynamic_string_def=0
583 AC_DEFINE_UNQUOTED([_GLIBCXX_FULLY_DYNAMIC_STRING], [${enable_fully_dynamic_string_def}],
584 [Define to 1 if a fully dynamic basic_string is wanted, 0 to disable, undefined for platform defaults])
589 dnl Does any necessary configuration of the testsuite directory. Generates
590 dnl the testsuite_hooks.h header.
592 dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this.
596 dnl GLIBCXX_TEST_WCHAR_T
597 dnl GLIBCXX_TEST_THREAD
600 dnl baseline_subdir_switch
602 AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [
603 if $GLIBCXX_IS_NATIVE ; then
604 # Do checks for resource limit functions.
605 GLIBCXX_CHECK_SETRLIMIT
607 # Look for setenv, so that extended locale tests can be performed.
608 GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
611 if $GLIBCXX_IS_NATIVE && test $is_hosted = yes &&
612 test $enable_symvers != no; then
615 enable_abi_check=no ;;
617 enable_abi_check=yes ;;
620 # Only build this as native, since automake does not understand
625 # Export file names for ABI checking.
626 baseline_dir="$glibcxx_srcdir/config/abi/post/${abi_baseline_pair}"
627 AC_SUBST(baseline_dir)
628 baseline_subdir_switch="$abi_baseline_subdir_switch"
629 AC_SUBST(baseline_subdir_switch)
634 dnl Does any necessary configuration for docbook in the docs directory.
636 dnl XSLTPROC must be set before this
639 dnl glibcxx_stylesheets
643 AC_DEFUN([GLIBCXX_CONFIGURE_DOCBOOK], [
645 AC_MSG_CHECKING([for docbook stylesheets for documentation creation])
646 glibcxx_stylesheets=no
647 if test x${XSLTPROC} = xyes && echo '<title/>' | xsltproc --noout --nonet --xinclude http://docbook.sourceforge.net/release/xsl-ns/current/xhtml-1_1/docbook.xsl - 2>/dev/null; then
648 glibcxx_stylesheets=yes
650 AC_MSG_RESULT($glibcxx_stylesheets)
652 AC_MSG_CHECKING([for local stylesheet directory])
653 glibcxx_local_stylesheets=no
654 if test x"$glibcxx_stylesheets" = x"yes"; then
655 if test -d /usr/share/sgml/docbook/xsl-ns-stylesheets; then
656 glibcxx_local_stylesheets=yes
657 XSL_STYLE_DIR=/usr/share/sgml/docbook/xsl-ns-stylesheets
659 if test -d /usr/share/xml/docbook/stylesheet/docbook-xsl-ns; then
660 glibcxx_local_stylesheets=yes
661 XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/docbook-xsl-ns
664 AC_MSG_RESULT($glibcxx_local_stylesheets)
666 if test x"$glibcxx_local_stylesheets" = x"yes"; then
667 AC_SUBST(XSL_STYLE_DIR)
668 AC_MSG_NOTICE($XSL_STYLE_DIR)
670 glibcxx_stylesheets=no
673 # Check for epub3 dependencies.
674 AC_MSG_CHECKING([for epub3 stylesheets for documentation creation])
675 glibcxx_epub_stylesheets=no
676 if test x"$glibcxx_local_stylesheets" = x"yes"; then
677 if test -f "$XSL_STYLE_DIR/epub3/chunk.xsl"; then
678 glibcxx_epub_stylesheets=yes
681 AC_MSG_RESULT($glibcxx_epub_stylesheets)
682 AM_CONDITIONAL(BUILD_EPUB, test x"$glibcxx_epub_stylesheets" = x"yes")
688 dnl Set up *_INCLUDES variables for all sundry Makefile.am's.
692 dnl TOPLEVEL_INCLUDES
694 AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [
695 # Used for every C++ compile we perform.
697 -I$glibcxx_builddir/include/$host_alias \
698 -I$glibcxx_builddir/include \
699 -I$glibcxx_srcdir/libsupc++"
701 # For Canadian crosses, pick this up too.
702 if test $CANADIAN = yes; then
703 GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}"
706 # Stuff in the actual top level. Currently only used by libsupc++ to
707 # get unwind* headers from the libgcc dir.
708 #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc -I$(toplevel_srcdir)/include'
709 TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc'
711 # Now, export this to all the little Makefiles....
712 AC_SUBST(GLIBCXX_INCLUDES)
713 AC_SUBST(TOPLEVEL_INCLUDES)
718 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
719 dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.)
722 dnl OPTIMIZE_CXXFLAGS
725 AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [
726 # Optimization flags that are probably a good idea for thrill-seekers. Just
727 # uncomment the lines below and make, everything else is ready to go...
728 # Alternatively OPTIMIZE_CXXFLAGS can be set in configure.host.
729 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
730 AC_SUBST(OPTIMIZE_CXXFLAGS)
732 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
738 dnl All installation directory information is determined here.
742 dnl glibcxx_prefixdir
743 dnl glibcxx_toolexecdir
744 dnl glibcxx_toolexeclibdir
746 dnl Assumes cross_compiling bits already done, and with_cross_host in
749 dnl This logic must match gcc/configure.ac's setting of gcc_gxx_include_dir.
750 dnl config/gxx-include-dir.m4 must be kept consistant with this as well.
751 AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [
752 glibcxx_toolexecdir=no
753 glibcxx_toolexeclibdir=no
754 glibcxx_prefixdir=$prefix
756 AC_MSG_CHECKING([for gxx-include-dir])
757 AC_ARG_WITH([gxx-include-dir],
758 AC_HELP_STRING([--with-gxx-include-dir=DIR],
759 [installation directory for include files]),
761 yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;;
762 no) gxx_include_dir=no ;;
763 *) gxx_include_dir=$withval ;;
765 [gxx_include_dir=no])
766 AC_MSG_RESULT($gxx_include_dir)
768 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
769 AC_ARG_ENABLE([version-specific-runtime-libs],
770 AC_HELP_STRING([--enable-version-specific-runtime-libs],
771 [Specify that runtime libraries should be installed in a compiler-specific directory]),
772 [case "$enableval" in
773 yes) version_specific_libs=yes ;;
774 no) version_specific_libs=no ;;
775 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
777 [version_specific_libs=no])
778 AC_MSG_RESULT($version_specific_libs)
780 # Default case for install directory for include files.
781 if test $version_specific_libs = no && test $gxx_include_dir = no; then
782 gxx_include_dir='include/c++/${gcc_version}'
783 if test -n "$with_cross_host" &&
784 test x"$with_cross_host" != x"no"; then
785 gxx_include_dir='${prefix}/${target_alias}/'"$gxx_include_dir"
787 gxx_include_dir='${prefix}/'"$gxx_include_dir"
791 # Version-specific runtime libs processing.
792 if test $version_specific_libs = yes; then
793 # Need the gcc compiler version to know where to install libraries
794 # and header files if --enable-version-specific-runtime-libs option
795 # is selected. FIXME: these variables are misnamed, there are
796 # no executables installed in _toolexecdir or _toolexeclibdir.
797 if test x"$gxx_include_dir" = x"no"; then
798 gxx_include_dir='${libdir}/gcc/${host_alias}/${gcc_version}/include/c++'
800 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
801 glibcxx_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)'
804 # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir
805 # Install a library built with a cross compiler in tooldir, not libdir.
806 if test x"$glibcxx_toolexecdir" = x"no"; then
807 if test -n "$with_cross_host" &&
808 test x"$with_cross_host" != x"no"; then
809 glibcxx_toolexecdir='${exec_prefix}/${host_alias}'
810 glibcxx_toolexeclibdir='${toolexecdir}/lib'
812 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
813 glibcxx_toolexeclibdir='${libdir}'
815 multi_os_directory=`$CXX -print-multi-os-directory`
816 case $multi_os_directory in
817 .) ;; # Avoid trailing /.
818 *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;;
822 AC_MSG_CHECKING([for install location])
823 AC_MSG_RESULT($gxx_include_dir)
825 AC_SUBST(glibcxx_prefixdir)
826 AC_SUBST(gxx_include_dir)
827 AC_SUBST(glibcxx_toolexecdir)
828 AC_SUBST(glibcxx_toolexeclibdir)
834 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING)
835 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c)
836 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER)
838 dnl See docs/html/17_intro/configury.html#enable for documentation.
840 m4_define([GLIBCXX_ENABLE],[dnl
841 m4_define([_g_switch],[--enable-$1])dnl
842 m4_define([_g_help],[AC_HELP_STRING([_g_switch$3],[$4 @<:@default=$2@:>@])])dnl
843 AC_ARG_ENABLE([$1],m4_dquote(_g_help),
848 m4_bpatsubst([$5],[permit ])) ;;
849 *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;;
850 dnl Idea for future: generate a URL pointing to
851 dnl "onlinedocs/configopts.html#whatever"
858 *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;;
862 [enable_]m4_bpatsubst([$1],-,_)[=][$2])
863 m4_undefine([_g_switch])dnl
864 m4_undefine([_g_help])dnl
869 dnl Check for ISO/IEC 9899:1999 "C99" support.
871 dnl --enable-c99 defines _GLIBCXX_USE_C99
872 dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined
873 dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)]
874 dnl Where DEFAULT is either `yes' or `no'.
875 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
877 AC_DEFUN([GLIBCXX_ENABLE_C99], [
878 GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support])
880 if test x"$enable_c99" = x"yes"; then
885 # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
886 # undefined and fake C99 facilities - like pre-standard snprintf - may be
887 # spuriously enabled.
888 # Long term, -std=c++0x could be even better, could manage to explicitely
889 # request C99 facilities to the underlying C headers.
890 ac_save_CXXFLAGS="$CXXFLAGS"
891 CXXFLAGS="$CXXFLAGS -std=c++98"
893 ac_save_gcc_no_link="$gcc_no_link"
895 if test x$gcc_no_link != xyes; then
896 # Use -fno-exceptions to that the C driver can link these tests without
897 # hitting undefined references to personality routines.
898 CXXFLAGS="$CXXFLAGS -fno-exceptions"
899 AC_CHECK_LIB(m, sin, [
902 # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK
907 # Check for the existence of <math.h> functions used if C99 is enabled.
908 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
909 AC_CACHE_VAL(glibcxx_cv_c99_math, [
910 GCC_TRY_COMPILE_OR_LINK(
912 volatile double d1, d2;
920 i = isgreater(d1, d2);
921 i = isgreaterequal(d1, d2);
923 i = islessequal(d1, d2);
924 i = islessgreater(d1, d2);
925 i = islessgreater(d1, d2);
926 i = isunordered(d1, d2);
927 ],[glibcxx_cv_c99_math=yes], [glibcxx_cv_c99_math=no])
929 AC_MSG_RESULT($glibcxx_cv_c99_math)
930 if test x"$glibcxx_cv_c99_math" = x"yes"; then
931 AC_DEFINE(_GLIBCXX_USE_C99_MATH, 1,
932 [Define if C99 functions or macros in <math.h> should be imported
933 in <cmath> in namespace std.])
936 # Check for the existence of <complex.h> complex math functions.
937 # This is necessary even though libstdc++ uses the builtin versions
938 # of these functions, because if the builtin cannot be used, a reference
939 # to the library function is emitted.
940 AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no)
941 AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
942 glibcxx_cv_c99_complex=no;
943 if test x"$ac_has_complex_h" = x"yes"; then
944 AC_MSG_CHECKING([for ISO C99 support in <complex.h>])
945 GCC_TRY_COMPILE_OR_LINK(
946 [#include <complex.h>
947 typedef __complex__ float float_type;
948 typedef __complex__ double double_type;
949 typedef __complex__ long double ld_type;
950 volatile float_type tmpf;
951 volatile double_type tmpd;
952 volatile ld_type tmpld;
955 volatile long double ld;],
967 tmpf = cpowf(tmpf, tmpf);
980 tmpd = cpow(tmpd, tmpd);
984 tmpld = ccosl(tmpld);
985 tmpld = ccoshl(tmpld);
986 tmpld = cexpl(tmpld);
987 tmpld = clogl(tmpld);
988 tmpld = csinl(tmpld);
989 tmpld = csinhl(tmpld);
990 tmpld = csqrtl(tmpld);
991 tmpld = ctanl(tmpld);
992 tmpld = ctanhl(tmpld);
993 tmpld = cpowl(tmpld, tmpld);
994 tmpld = cprojl(tmpld);
995 ],[glibcxx_cv_c99_complex=yes], [glibcxx_cv_c99_complex=no])
997 AC_MSG_RESULT($glibcxx_cv_c99_complex)
998 if test x"$glibcxx_cv_c99_complex" = x"yes"; then
999 AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX, 1,
1000 [Define if C99 functions in <complex.h> should be used in
1001 <complex>. Using compiler builtins for these functions requires
1002 corresponding C99 library functions to be present.])
1005 # Check for the existence in <stdio.h> of vscanf, et. al.
1006 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
1007 AC_CACHE_VAL(glibcxx_cv_c99_stdio, [
1008 GCC_TRY_COMPILE_OR_LINK(
1011 void foo(char* fmt, ...)
1013 va_list args; va_start(args, fmt);
1014 vfscanf(stderr, "%i", args);
1016 vsnprintf(fmt, 0, "%i", args);
1017 vsscanf(fmt, "%i", args);
1019 [snprintf("12", 0, "%i");],
1020 [glibcxx_cv_c99_stdio=yes], [glibcxx_cv_c99_stdio=no])
1022 AC_MSG_RESULT($glibcxx_cv_c99_stdio)
1024 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1025 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1026 AC_CACHE_VAL(glibcxx_cv_c99_stdlib, [
1027 GCC_TRY_COMPILE_OR_LINK(
1028 [#include <stdlib.h>
1030 volatile long double ld;
1031 volatile unsigned long long ll;
1034 f = strtof("gnu", &tmp);
1035 ld = strtold("gnu", &tmp);
1036 ll = strtoll("gnu", &tmp, 10);
1037 ll = strtoull("gnu", &tmp, 10);
1039 mydivt = lldiv(10,1);
1044 ],[glibcxx_cv_c99_stdlib=yes], [glibcxx_cv_c99_stdlib=no])
1046 AC_MSG_RESULT($glibcxx_cv_c99_stdlib)
1048 # Check for the existence in <wchar.h> of wcstold, etc.
1049 glibcxx_cv_c99_wchar=no;
1050 if test x"$ac_has_wchar_h" = xyes &&
1051 test x"$ac_has_wctype_h" = xyes; then
1052 AC_MSG_CHECKING([for ISO C99 support in <wchar.h>])
1053 AC_TRY_COMPILE([#include <wchar.h>
1060 ],[],[glibcxx_cv_c99_wchar=yes], [glibcxx_cv_c99_wchar=no])
1062 # Checks for wide character functions that may not be present.
1063 # Injection of these is wrapped with guard macros.
1064 # NB: only put functions here, instead of immediately above, if
1065 # absolutely necessary.
1066 AC_TRY_COMPILE([#include <wchar.h>
1067 namespace test { using ::vfwscanf; } ], [],
1068 [AC_DEFINE(HAVE_VFWSCANF,1,
1069 [Defined if vfwscanf exists.])],[])
1071 AC_TRY_COMPILE([#include <wchar.h>
1072 namespace test { using ::vswscanf; } ], [],
1073 [AC_DEFINE(HAVE_VSWSCANF,1,
1074 [Defined if vswscanf exists.])],[])
1076 AC_TRY_COMPILE([#include <wchar.h>
1077 namespace test { using ::vwscanf; } ], [],
1078 [AC_DEFINE(HAVE_VWSCANF,1,[Defined if vwscanf exists.])],[])
1080 AC_TRY_COMPILE([#include <wchar.h>
1081 namespace test { using ::wcstof; } ], [],
1082 [AC_DEFINE(HAVE_WCSTOF,1,[Defined if wcstof exists.])],[])
1084 AC_TRY_COMPILE([#include <wctype.h>],
1085 [ wint_t t; int i = iswblank(t);],
1086 [AC_DEFINE(HAVE_ISWBLANK,1,
1087 [Defined if iswblank exists.])],[])
1089 AC_MSG_RESULT($glibcxx_cv_c99_wchar)
1092 # Option parsed, now set things appropriately.
1093 if test x"$glibcxx_cv_c99_math" = x"no" ||
1094 test x"$glibcxx_cv_c99_complex" = x"no" ||
1095 test x"$glibcxx_cv_c99_stdio" = x"no" ||
1096 test x"$glibcxx_cv_c99_stdlib" = x"no" ||
1097 test x"$glibcxx_cv_c99_wchar" = x"no"; then
1100 AC_DEFINE(_GLIBCXX_USE_C99, 1,
1101 [Define if C99 functions or macros from <wchar.h>, <math.h>,
1102 <complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.])
1105 gcc_no_link="$ac_save_gcc_no_link"
1106 LIBS="$ac_save_LIBS"
1107 CXXFLAGS="$ac_save_CXXFLAGS"
1111 AC_MSG_CHECKING([for fully enabled ISO C99 support])
1112 AC_MSG_RESULT($enable_c99)
1117 dnl Check for clock_gettime, nanosleep and sched_yield, used in the
1118 dnl implementation of 20.8.5 [time.clock], and 30.2.2 [thread.thread.this]
1119 dnl in the current C++0x working draft.
1121 dnl --enable-libstdcxx-time
1122 dnl --enable-libstdcxx-time=yes
1123 dnl checks for the availability of monotonic and realtime clocks,
1124 dnl nanosleep and sched_yield in libc and libposix4 and, in case, links
1126 dnl --enable-libstdcxx-time=rt
1127 dnl also searches (and, in case, links) librt. Note that this is
1128 dnl not always desirable because, in glibc, for example, in turn it
1129 dnl triggers the linking of libpthread too, which activates locking,
1130 dnl a large overhead for single-thread programs.
1131 dnl --enable-libstdcxx-time=no
1132 dnl --disable-libstdcxx-time
1133 dnl disables the checks completely
1135 AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [
1137 AC_MSG_CHECKING([for clock_gettime, nanosleep and sched_yield])
1138 GLIBCXX_ENABLE(libstdcxx-time,$1,[[[=KIND]]],
1139 [use KIND for check type],
1144 ac_save_CXXFLAGS="$CXXFLAGS"
1145 CXXFLAGS="$CXXFLAGS -fno-exceptions"
1146 ac_save_LIBS="$LIBS"
1148 ac_has_clock_monotonic=no
1149 ac_has_clock_realtime=no
1150 AC_MSG_RESULT($enable_libstdcxx_time)
1152 if test x"$enable_libstdcxx_time" != x"no"; then
1154 if test x"$enable_libstdcxx_time" = x"rt"; then
1155 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
1156 AC_SEARCH_LIBS(nanosleep, [rt posix4])
1158 AC_SEARCH_LIBS(clock_gettime, [posix4])
1159 AC_SEARCH_LIBS(nanosleep, [posix4])
1162 case "$ac_cv_search_clock_gettime" in
1163 -l*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime
1166 case "$ac_cv_search_nanosleep" in
1167 -l*) GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_nanosleep"
1171 AC_SEARCH_LIBS(sched_yield, [rt posix4])
1173 case "$ac_cv_search_sched_yield" in
1175 GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
1176 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
1177 [ Defined if sched_yield is available. ])
1180 if test x"$enable_libstdcxx_time" = x"rt"; then
1181 GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
1182 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
1183 [ Defined if sched_yield is available. ])
1187 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
1188 [ Defined if sched_yield is available. ])
1192 AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no)
1194 if test x"$ac_has_unistd_h" = x"yes"; then
1195 AC_MSG_CHECKING([for monotonic clock])
1197 [#include <unistd.h>
1200 [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
1203 clock_gettime(CLOCK_MONOTONIC, &tp);
1204 ], [ac_has_clock_monotonic=yes], [ac_has_clock_monotonic=no])
1206 AC_MSG_RESULT($ac_has_clock_monotonic)
1208 AC_MSG_CHECKING([for realtime clock])
1210 [#include <unistd.h>
1213 [#if _POSIX_TIMERS > 0
1216 clock_gettime(CLOCK_REALTIME, &tp);
1217 ], [ac_has_clock_realtime=yes], [ac_has_clock_realtime=no])
1219 AC_MSG_RESULT($ac_has_clock_realtime)
1221 AC_MSG_CHECKING([for nanosleep])
1223 [#include <unistd.h>
1226 [#if _POSIX_TIMERS > 0
1230 ], [ac_has_nanosleep=yes], [ac_has_nanosleep=no])
1232 AC_MSG_RESULT($ac_has_nanosleep)
1236 if test x"$ac_has_clock_monotonic" = x"yes"; then
1237 AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1,
1238 [ Defined if clock_gettime has monotonic clock support. ])
1241 if test x"$ac_has_clock_realtime" = x"yes"; then
1242 AC_DEFINE(_GLIBCXX_USE_CLOCK_REALTIME, 1,
1243 [ Defined if clock_gettime has realtime clock support. ])
1246 if test x"$ac_has_nanosleep" = x"yes"; then
1247 AC_DEFINE(_GLIBCXX_USE_NANOSLEEP, 1,
1248 [ Defined if nanosleep is available. ])
1251 AC_SUBST(GLIBCXX_LIBS)
1253 CXXFLAGS="$ac_save_CXXFLAGS"
1254 LIBS="$ac_save_LIBS"
1259 dnl Check for gettimeofday, used in the implementation of 20.8.5
1260 dnl [time.clock] in the current C++0x working draft.
1262 AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [
1264 AC_MSG_CHECKING([for gettimeofday])
1268 ac_save_CXXFLAGS="$CXXFLAGS"
1269 CXXFLAGS="$CXXFLAGS -fno-exceptions"
1271 ac_has_gettimeofday=no;
1272 AC_CHECK_HEADERS(sys/time.h, ac_has_sys_time_h=yes, ac_has_sys_time_h=no)
1273 if test x"$ac_has_sys_time_h" = x"yes"; then
1274 AC_MSG_CHECKING([for gettimeofday])
1275 GCC_TRY_COMPILE_OR_LINK([#include <sys/time.h>],
1276 [timeval tv; gettimeofday(&tv, 0);],
1277 [ac_has_gettimeofday=yes], [ac_has_gettimeofday=no])
1279 AC_MSG_RESULT($ac_has_gettimeofday)
1282 if test x"$ac_has_gettimeofday" = x"yes"; then
1283 AC_DEFINE(_GLIBCXX_USE_GETTIMEOFDAY, 1,
1284 [ Defined if gettimeofday is available. ])
1287 CXXFLAGS="$ac_save_CXXFLAGS"
1292 dnl Check for ISO/IEC 9899:1999 "C99" support to ISO/IEC DTR 19768 "TR1"
1293 dnl facilities in Chapter 8, "C compatibility".
1295 AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [
1300 # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
1301 # undefined and fake C99 facilities may be spuriously enabled.
1302 ac_save_CXXFLAGS="$CXXFLAGS"
1303 CXXFLAGS="$CXXFLAGS -std=c++98"
1305 # Check for the existence of <complex.h> complex math functions used
1307 AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
1308 ac_c99_complex_tr1=no;
1309 if test x"$ac_has_complex_h" = x"yes"; then
1310 AC_MSG_CHECKING([for ISO C99 support to TR1 in <complex.h>])
1311 AC_TRY_COMPILE([#include <complex.h>],
1312 [typedef __complex__ float float_type; float_type tmpf;
1319 typedef __complex__ double double_type; double_type tmpd;
1326 typedef __complex__ long double ld_type; ld_type tmpld;
1333 ],[ac_c99_complex_tr1=yes], [ac_c99_complex_tr1=no])
1335 AC_MSG_RESULT($ac_c99_complex_tr1)
1336 if test x"$ac_c99_complex_tr1" = x"yes"; then
1337 AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX_TR1, 1,
1338 [Define if C99 functions in <complex.h> should be used in
1339 <tr1/complex>. Using compiler builtins for these functions
1340 requires corresponding C99 library functions to be present.])
1343 # Check for the existence of <ctype.h> functions.
1344 AC_MSG_CHECKING([for ISO C99 support to TR1 in <ctype.h>])
1345 AC_CACHE_VAL(glibcxx_cv_c99_ctype_tr1, [
1346 AC_TRY_COMPILE([#include <ctype.h>],
1350 ],[glibcxx_cv_c99_ctype_tr1=yes],
1351 [glibcxx_cv_c99_ctype_tr1=no])
1353 AC_MSG_RESULT($glibcxx_cv_c99_ctype_tr1)
1354 if test x"$glibcxx_cv_c99_ctype_tr1" = x"yes"; then
1355 AC_DEFINE(_GLIBCXX_USE_C99_CTYPE_TR1, 1,
1356 [Define if C99 functions in <ctype.h> should be imported in
1357 <tr1/cctype> in namespace std::tr1.])
1360 # Check for the existence of <fenv.h> functions.
1361 AC_CHECK_HEADERS(fenv.h, ac_has_fenv_h=yes, ac_has_fenv_h=no)
1363 if test x"$ac_has_fenv_h" = x"yes"; then
1364 AC_MSG_CHECKING([for ISO C99 support to TR1 in <fenv.h>])
1365 AC_TRY_COMPILE([#include <fenv.h>],
1370 ret = feclearexcept(except);
1371 ret = fegetexceptflag(pflag, except);
1372 ret = feraiseexcept(except);
1373 ret = fesetexceptflag(pflag, except);
1374 ret = fetestexcept(except);
1376 ret = fesetround(mode);
1377 ret = fegetenv(penv);
1378 ret = feholdexcept(penv);
1379 ret = fesetenv(penv);
1380 ret = feupdateenv(penv);
1381 ],[ac_c99_fenv_tr1=yes], [ac_c99_fenv_tr1=no])
1383 AC_MSG_RESULT($ac_c99_fenv_tr1)
1384 if test x"$ac_c99_fenv_tr1" = x"yes"; then
1385 AC_DEFINE(_GLIBCXX_USE_C99_FENV_TR1, 1,
1386 [Define if C99 functions in <fenv.h> should be imported in
1387 <tr1/cfenv> in namespace std::tr1.])
1390 # Check for the existence of <stdint.h> types.
1391 AC_MSG_CHECKING([for ISO C99 support to TR1 in <stdint.h>])
1392 AC_CACHE_VAL(glibcxx_cv_c99_stdint_tr1, [
1393 AC_TRY_COMPILE([#define __STDC_LIMIT_MACROS
1394 #define __STDC_CONSTANT_MACROS
1395 #include <stdint.h>],
1396 [typedef int8_t my_int8_t;
1397 my_int8_t i8 = INT8_MIN;
1399 typedef int16_t my_int16_t;
1400 my_int16_t i16 = INT16_MIN;
1402 typedef int32_t my_int32_t;
1403 my_int32_t i32 = INT32_MIN;
1405 typedef int64_t my_int64_t;
1406 my_int64_t i64 = INT64_MIN;
1408 typedef int_fast8_t my_int_fast8_t;
1409 my_int_fast8_t if8 = INT_FAST8_MIN;
1410 if8 = INT_FAST8_MAX;
1411 typedef int_fast16_t my_int_fast16_t;
1412 my_int_fast16_t if16 = INT_FAST16_MIN;
1413 if16 = INT_FAST16_MAX;
1414 typedef int_fast32_t my_int_fast32_t;
1415 my_int_fast32_t if32 = INT_FAST32_MIN;
1416 if32 = INT_FAST32_MAX;
1417 typedef int_fast64_t my_int_fast64_t;
1418 my_int_fast64_t if64 = INT_FAST64_MIN;
1419 if64 = INT_FAST64_MAX;
1420 typedef int_least8_t my_int_least8_t;
1421 my_int_least8_t il8 = INT_LEAST8_MIN;
1422 il8 = INT_LEAST8_MAX;
1423 typedef int_least16_t my_int_least16_t;
1424 my_int_least16_t il16 = INT_LEAST16_MIN;
1425 il16 = INT_LEAST16_MAX;
1426 typedef int_least32_t my_int_least32_t;
1427 my_int_least32_t il32 = INT_LEAST32_MIN;
1428 il32 = INT_LEAST32_MAX;
1429 typedef int_least64_t my_int_least64_t;
1430 my_int_least64_t il64 = INT_LEAST64_MIN;
1431 il64 = INT_LEAST64_MAX;
1432 typedef intmax_t my_intmax_t;
1433 my_intmax_t im = INTMAX_MAX;
1435 typedef intptr_t my_intptr_t;
1436 my_intptr_t ip = INTPTR_MAX;
1438 typedef uint8_t my_uint8_t;
1439 my_uint8_t ui8 = UINT8_MAX;
1441 typedef uint16_t my_uint16_t;
1442 my_uint16_t ui16 = UINT16_MAX;
1444 typedef uint32_t my_uint32_t;
1445 my_uint32_t ui32 = UINT32_MAX;
1447 typedef uint64_t my_uint64_t;
1448 my_uint64_t ui64 = UINT64_MAX;
1450 typedef uint_fast8_t my_uint_fast8_t;
1451 my_uint_fast8_t uif8 = UINT_FAST8_MAX;
1452 uif8 = UINT_FAST8_MAX;
1453 typedef uint_fast16_t my_uint_fast16_t;
1454 my_uint_fast16_t uif16 = UINT_FAST16_MAX;
1455 uif16 = UINT_FAST16_MAX;
1456 typedef uint_fast32_t my_uint_fast32_t;
1457 my_uint_fast32_t uif32 = UINT_FAST32_MAX;
1458 uif32 = UINT_FAST32_MAX;
1459 typedef uint_fast64_t my_uint_fast64_t;
1460 my_uint_fast64_t uif64 = UINT_FAST64_MAX;
1461 uif64 = UINT_FAST64_MAX;
1462 typedef uint_least8_t my_uint_least8_t;
1463 my_uint_least8_t uil8 = UINT_LEAST8_MAX;
1464 uil8 = UINT_LEAST8_MAX;
1465 typedef uint_least16_t my_uint_least16_t;
1466 my_uint_least16_t uil16 = UINT_LEAST16_MAX;
1467 uil16 = UINT_LEAST16_MAX;
1468 typedef uint_least32_t my_uint_least32_t;
1469 my_uint_least32_t uil32 = UINT_LEAST32_MAX;
1470 uil32 = UINT_LEAST32_MAX;
1471 typedef uint_least64_t my_uint_least64_t;
1472 my_uint_least64_t uil64 = UINT_LEAST64_MAX;
1473 uil64 = UINT_LEAST64_MAX;
1474 typedef uintmax_t my_uintmax_t;
1475 my_uintmax_t uim = UINTMAX_MAX;
1477 typedef uintptr_t my_uintptr_t;
1478 my_uintptr_t uip = UINTPTR_MAX;
1480 ],[glibcxx_cv_c99_stdint_tr1=yes],
1481 [glibcxx_cv_c99_stdint_tr1=no])
1483 AC_MSG_RESULT($glibcxx_cv_c99_stdint_tr1)
1484 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
1485 AC_DEFINE(_GLIBCXX_USE_C99_STDINT_TR1, 1,
1486 [Define if C99 types in <stdint.h> should be imported in
1487 <tr1/cstdint> in namespace std::tr1.])
1490 # Check for the existence of <math.h> functions.
1491 AC_MSG_CHECKING([for ISO C99 support to TR1 in <math.h>])
1492 AC_CACHE_VAL(glibcxx_cv_c99_math_tr1, [
1493 AC_TRY_COMPILE([#include <math.h>],
1494 [typedef double_t my_double_t;
1495 typedef float_t my_float_t;
1509 copysignf(0.0f, 0.0f);
1510 copysignl(0.0l, 0.0l);
1527 fmaf(0.0f, 0.0f, 0.0f);
1528 fmal(0.0l, 0.0l, 0.0l);
1571 nextafter(0.0, 0.0);
1572 nextafterf(0.0f, 0.0f);
1573 nextafterl(0.0l, 0.0l);
1574 nexttoward(0.0, 0.0);
1575 nexttowardf(0.0f, 0.0f);
1576 nexttowardl(0.0l, 0.0l);
1577 remainder(0.0, 0.0);
1578 remainderf(0.0f, 0.0f);
1579 remainderl(0.0l, 0.0l);
1580 remquo(0.0, 0.0, 0);
1581 remquof(0.0f, 0.0f, 0);
1582 remquol(0.0l, 0.0l, 0);
1601 ],[glibcxx_cv_c99_math_tr1=yes], [glibcxx_cv_c99_math_tr1=no])
1603 AC_MSG_RESULT($glibcxx_cv_c99_math_tr1)
1604 if test x"$glibcxx_cv_c99_math_tr1" = x"yes"; then
1605 AC_DEFINE(_GLIBCXX_USE_C99_MATH_TR1, 1,
1606 [Define if C99 functions or macros in <math.h> should be imported
1607 in <tr1/cmath> in namespace std::tr1.])
1610 # Check for the existence of <inttypes.h> functions (NB: doesn't make
1611 # sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1).
1612 ac_c99_inttypes_tr1=no;
1613 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
1614 AC_MSG_CHECKING([for ISO C99 support to TR1 in <inttypes.h>])
1615 AC_TRY_COMPILE([#include <inttypes.h>],
1616 [intmax_t i, numer, denom, base;
1619 intmax_t ret = imaxabs(i);
1620 imaxdiv_t dret = imaxdiv(numer, denom);
1621 ret = strtoimax(s, endptr, base);
1622 uintmax_t uret = strtoumax(s, endptr, base);
1623 ],[ac_c99_inttypes_tr1=yes], [ac_c99_inttypes_tr1=no])
1625 AC_MSG_RESULT($ac_c99_inttypes_tr1)
1626 if test x"$ac_c99_inttypes_tr1" = x"yes"; then
1627 AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_TR1, 1,
1628 [Define if C99 functions in <inttypes.h> should be imported in
1629 <tr1/cinttypes> in namespace std::tr1.])
1632 # Check for the existence of whcar_t <inttypes.h> functions (NB: doesn't
1633 # make sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1).
1634 ac_c99_inttypes_wchar_t_tr1=no;
1635 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
1636 AC_MSG_CHECKING([for wchar_t ISO C99 support to TR1 in <inttypes.h>])
1637 AC_TRY_COMPILE([#include <inttypes.h>],
1641 intmax_t ret = wcstoimax(s, endptr, base);
1642 uintmax_t uret = wcstoumax(s, endptr, base);
1643 ],[ac_c99_inttypes_wchar_t_tr1=yes],
1644 [ac_c99_inttypes_wchar_t_tr1=no])
1646 AC_MSG_RESULT($ac_c99_inttypes_wchar_t_tr1)
1647 if test x"$ac_c99_inttypes_wchar_t_tr1" = x"yes"; then
1648 AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1, 1,
1649 [Define if wchar_t C99 functions in <inttypes.h> should be
1650 imported in <tr1/cinttypes> in namespace std::tr1.])
1653 # Check for the existence of the <stdbool.h> header.
1654 AC_CHECK_HEADERS(stdbool.h)
1656 # Check for the existence of the <stdalign.h> header.
1657 AC_CHECK_HEADERS(stdalign.h)
1659 CXXFLAGS="$ac_save_CXXFLAGS"
1664 dnl Check whether "/dev/random" and "/dev/urandom" are available for the
1665 dnl random_device of "TR1" (Chapter 5.1, "Random number generation").
1667 AC_DEFUN([GLIBCXX_CHECK_RANDOM_TR1], [
1669 AC_MSG_CHECKING([for "/dev/random" and "/dev/urandom" for TR1 random_device])
1670 AC_CACHE_VAL(glibcxx_cv_random_tr1, [
1671 if test -r /dev/random && test -r /dev/urandom; then
1672 glibcxx_cv_random_tr1=yes;
1674 glibcxx_cv_random_tr1=no;
1677 AC_MSG_RESULT($glibcxx_cv_random_tr1)
1679 if test x"$glibcxx_cv_random_tr1" = x"yes"; then
1680 AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1,
1681 [Define if /dev/random and /dev/urandom are available for
1682 the random_device of TR1 (Chapter 5.1).])
1688 dnl Compute the EOF, SEEK_CUR, and SEEK_END integer constants.
1690 AC_DEFUN([GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS], [
1692 AC_CACHE_CHECK([for the value of EOF], glibcxx_cv_stdio_eof, [
1693 AC_COMPUTE_INT([glibcxx_cv_stdio_eof], [[EOF]],
1694 [#include <stdio.h>],
1695 [AC_MSG_ERROR([computing EOF failed])])
1697 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_EOF, $glibcxx_cv_stdio_eof,
1698 [Define to the value of the EOF integer constant.])
1700 AC_CACHE_CHECK([for the value of SEEK_CUR], glibcxx_cv_stdio_seek_cur, [
1701 AC_COMPUTE_INT([glibcxx_cv_stdio_seek_cur], [[SEEK_CUR]],
1702 [#include <stdio.h>],
1703 [AC_MSG_ERROR([computing SEEK_CUR failed])])
1705 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_CUR, $glibcxx_cv_stdio_seek_cur,
1706 [Define to the value of the SEEK_CUR integer constant.])
1708 AC_CACHE_CHECK([for the value of SEEK_END], glibcxx_cv_stdio_seek_end, [
1709 AC_COMPUTE_INT([glibcxx_cv_stdio_seek_end], [[SEEK_END]],
1710 [#include <stdio.h>],
1711 [AC_MSG_ERROR([computing SEEK_END failed])])
1713 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_END, $glibcxx_cv_stdio_seek_end,
1714 [Define to the value of the SEEK_END integer constant.])
1718 dnl Check whether required C++ overloads are present in <math.h>.
1721 AC_DEFUN([GLIBCXX_CHECK_MATH_PROTO], [
1728 # Solaris 8 FCS only had an overload for double std::abs(double) in
1729 # <iso/math_iso.h>. Patches 111721-04 (SPARC) and 112757-01 (x86)
1730 # introduced the full set also found from Solaris 9 onwards.
1731 AC_MSG_CHECKING([for float std::abs(float) overload])
1732 AC_CACHE_VAL(glibcxx_cv_abs_float, [
1733 AC_COMPILE_IFELSE([AC_LANG_SOURCE(
1736 inline float abs(float __x)
1737 { return __builtin_fabsf(__x); }
1740 [glibcxx_cv_abs_float=no],
1741 [glibcxx_cv_abs_float=yes]
1744 # autoheader cannot handle indented templates.
1745 AH_VERBATIM([__CORRECT_ISO_CPP_MATH_H_PROTO1],
1746 [/* Define if all C++ overloads are available in <math.h>. */
1747 #if __cplusplus >= 199711L
1748 #undef __CORRECT_ISO_CPP_MATH_H_PROTO1
1750 AH_VERBATIM([__CORRECT_ISO_CPP_MATH_H_PROTO2],
1751 [/* Define if only double std::abs(double) is available in <math.h>. */
1752 #if __cplusplus >= 199711L
1753 #undef __CORRECT_ISO_CPP_MATH_H_PROTO2
1756 if test $glibcxx_cv_abs_float = yes; then
1757 AC_DEFINE(__CORRECT_ISO_CPP_MATH_H_PROTO1)
1759 AC_DEFINE(__CORRECT_ISO_CPP_MATH_H_PROTO2)
1761 AC_MSG_RESULT($glibcxx_cv_abs_float)
1769 dnl Check whether required C++ overloads are present in <stdlib.h>.
1772 AC_DEFUN([GLIBCXX_CHECK_STDLIB_PROTO], [
1779 # Solaris 8 FCS lacked the overloads for long std::abs(long) and
1780 # ldiv_t std::div(long, long) in <iso/stdlib_iso.h>. Patches 109607-02
1781 # (SPARC) and 109608-02 (x86) introduced them.
1782 AC_MSG_CHECKING([for long std::abs(long) overload])
1783 AC_CACHE_VAL(glibcxx_cv_abs_long, [
1784 AC_COMPILE_IFELSE([AC_LANG_SOURCE(
1785 [#include <stdlib.h>
1788 abs(long __i) { return labs(__i); }
1791 [glibcxx_cv_abs_long=no],
1792 [glibcxx_cv_abs_long=yes]
1795 # autoheader cannot handle indented templates.
1796 AH_VERBATIM([__CORRECT_ISO_CPP_STDLIB_H_PROTO],
1797 [/* Define if all C++ overloads are available in <stdlib.h>. */
1798 #if __cplusplus >= 199711L
1799 #undef __CORRECT_ISO_CPP_STDLIB_H_PROTO
1801 if test $glibcxx_cv_abs_long = yes; then
1802 AC_DEFINE(__CORRECT_ISO_CPP_STDLIB_H_PROTO, 1)
1804 AC_MSG_RESULT($glibcxx_cv_abs_long)
1812 dnl Check whether macros, etc are present for <system_error>
1814 AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [
1816 m4_pushdef([n_syserr], [1])dnl
1817 m4_foreach([syserr], [EOWNERDEAD, ENOTRECOVERABLE, ENOLINK, EPROTO, ENODATA,
1818 ENOSR, ENOSTR, ETIME, EBADMSG, ECANCELED,
1819 EOVERFLOW, ENOTSUP, EIDRM, ETXTBSY,
1820 ECHILD, ENOSPC, EPERM,
1821 ETIMEDOUT, EWOULDBLOCK],
1822 [m4_pushdef([SYSERR], m4_toupper(syserr))dnl
1823 AC_MSG_CHECKING([for syserr])
1824 AC_CACHE_VAL([glibcxx_cv_system_error[]n_syserr], [
1825 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <errno.h>]],
1826 [int i = syserr;])],
1827 [glibcxx_cv_system_error[]n_syserr=yes],
1828 [glibcxx_cv_system_error[]n_syserr=no])
1830 AC_MSG_RESULT([$glibcxx_cv_system_error[]n_syserr])
1831 if test x"$glibcxx_cv_system_error[]n_syserr" = x"yes"; then
1832 AC_DEFINE([HAVE_]SYSERR, 1, [Define if ]syserr[ exists.])
1834 m4_define([n_syserr], m4_incr(n_syserr))dnl
1835 m4_popdef([SYSERR])dnl
1837 m4_popdef([n_syserr])dnl
1841 dnl Check for what type of C headers to use.
1843 dnl --enable-cheaders= [does stuff].
1844 dnl --disable-cheaders [does not do anything, really].
1845 dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)]
1846 dnl Where DEFAULT is either 'c' or 'c_std' or 'c_global'.
1848 AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [
1849 GLIBCXX_ENABLE(cheaders,$1,[[[=KIND]]],
1850 [construct "C" headers for g++], [permit c|c_std|c_global])
1851 AC_MSG_NOTICE("C" header strategy set to $enable_cheaders)
1853 C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders
1855 # Allow overrides to configure.host here.
1856 if test $enable_cheaders = c_global; then
1860 AC_SUBST(C_INCLUDE_DIR)
1861 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c)
1862 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std)
1863 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_GLOBAL, test $enable_cheaders = c_global)
1864 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes)
1869 dnl Check for which locale library to use. The choice is mapped to
1870 dnl a subdirectory of config/locale.
1872 dnl Default is generic.
1874 AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [
1875 GLIBCXX_ENABLE(clocale,auto,[[[=MODEL]]],
1876 [use MODEL for target locale package],
1877 [permit generic|gnu|ieee_1003.1-2001|newlib|yes|no|auto])
1879 # Deal with gettext issues. Default to not using it (=no) until we detect
1880 # support for it later. Let the user turn it off via --e/d, but let that
1881 # default to on for easier handling.
1884 AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]),
1888 # Either a known package, or "auto"
1889 if test $enable_clocale = no || test $enable_clocale = yes; then
1892 enable_clocale_flag=$enable_clocale
1894 # Probe for locale model to use if none specified.
1895 # Default to "generic".
1896 if test $enable_clocale_flag = auto; then
1897 case ${target_os} in
1898 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
1899 enable_clocale_flag=gnu
1902 enable_clocale_flag=darwin
1905 if test x"$with_newlib" = x"yes"; then
1906 enable_clocale_flag=newlib
1908 enable_clocale_flag=generic
1914 # Sanity check model, and test for special functionality.
1915 if test $enable_clocale_flag = gnu; then
1916 AC_EGREP_CPP([_GLIBCXX_ok], [
1917 #include <features.h>
1918 #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(__UCLIBC__)
1921 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1923 # Set it to scream when it hurts.
1924 ac_save_CFLAGS="$CFLAGS"
1925 CFLAGS="-Wimplicit-function-declaration -Werror"
1927 # Use strxfrm_l if available.
1928 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1930 #include <locale.h>],
1931 [char s[128]; __locale_t loc; strxfrm_l(s, "C", 5, loc);],
1932 AC_DEFINE(HAVE_STRXFRM_L, 1,
1933 [Define if strxfrm_l is available in <string.h>.]),)
1935 # Use strerror_l if available.
1936 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1938 #include <locale.h>],
1939 [__locale_t loc; strerror_l(5, loc);],
1940 AC_DEFINE(HAVE_STRERROR_L, 1,
1941 [Define if strerror_l is available in <string.h>.]),)
1943 CFLAGS="$ac_save_CFLAGS"
1946 # Perhaps use strerror_r if available, and strerror_l isn't.
1947 ac_save_CFLAGS="$CFLAGS"
1948 CFLAGS="-Wimplicit-function-declaration -Werror"
1949 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1951 #include <locale.h>],
1952 [char s[128]; strerror_r(5, s, 128);],
1953 AC_DEFINE(HAVE_STRERROR_R, 1,
1954 [Define if strerror_r is available in <string.h>.]),)
1955 CFLAGS="$ac_save_CFLAGS"
1957 # Set configure bits for specified locale package
1958 AC_MSG_CHECKING([for C locale to use])
1959 case ${enable_clocale_flag} in
1961 AC_MSG_RESULT(generic)
1963 CLOCALE_H=config/locale/generic/c_locale.h
1964 CLOCALE_CC=config/locale/generic/c_locale.cc
1965 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1966 CCOLLATE_CC=config/locale/generic/collate_members.cc
1967 CCTYPE_CC=config/locale/generic/ctype_members.cc
1968 CMESSAGES_H=config/locale/generic/messages_members.h
1969 CMESSAGES_CC=config/locale/generic/messages_members.cc
1970 CMONEY_CC=config/locale/generic/monetary_members.cc
1971 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1972 CTIME_H=config/locale/generic/time_members.h
1973 CTIME_CC=config/locale/generic/time_members.cc
1974 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1977 AC_MSG_RESULT(darwin or freebsd)
1979 CLOCALE_H=config/locale/generic/c_locale.h
1980 CLOCALE_CC=config/locale/generic/c_locale.cc
1981 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1982 CCOLLATE_CC=config/locale/generic/collate_members.cc
1983 CCTYPE_CC=config/locale/darwin/ctype_members.cc
1984 CMESSAGES_H=config/locale/generic/messages_members.h
1985 CMESSAGES_CC=config/locale/generic/messages_members.cc
1986 CMONEY_CC=config/locale/generic/monetary_members.cc
1987 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1988 CTIME_H=config/locale/generic/time_members.h
1989 CTIME_CC=config/locale/generic/time_members.cc
1990 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1996 # Declare intention to use gettext, and add support for specific
1998 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
2001 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
2002 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
2003 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
2006 # Export the build objects.
2007 for ling in $ALL_LINGUAS; do \
2008 glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \
2009 glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \
2011 AC_SUBST(glibcxx_MOFILES)
2012 AC_SUBST(glibcxx_POFILES)
2014 CLOCALE_H=config/locale/gnu/c_locale.h
2015 CLOCALE_CC=config/locale/gnu/c_locale.cc
2016 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
2017 CCOLLATE_CC=config/locale/gnu/collate_members.cc
2018 CCTYPE_CC=config/locale/gnu/ctype_members.cc
2019 CMESSAGES_H=config/locale/gnu/messages_members.h
2020 CMESSAGES_CC=config/locale/gnu/messages_members.cc
2021 CMONEY_CC=config/locale/gnu/monetary_members.cc
2022 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
2023 CTIME_H=config/locale/gnu/time_members.h
2024 CTIME_CC=config/locale/gnu/time_members.cc
2025 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
2028 AC_MSG_RESULT(IEEE 1003.1)
2030 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
2031 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
2032 CCODECVT_CC=config/locale/generic/codecvt_members.cc
2033 CCOLLATE_CC=config/locale/generic/collate_members.cc
2034 CCTYPE_CC=config/locale/generic/ctype_members.cc
2035 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
2036 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
2037 CMONEY_CC=config/locale/generic/monetary_members.cc
2038 CNUMERIC_CC=config/locale/generic/numeric_members.cc
2039 CTIME_H=config/locale/generic/time_members.h
2040 CTIME_CC=config/locale/generic/time_members.cc
2041 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
2044 AC_MSG_RESULT(newlib)
2046 CLOCALE_H=config/locale/generic/c_locale.h
2047 CLOCALE_CC=config/locale/generic/c_locale.cc
2048 CCODECVT_CC=config/locale/generic/codecvt_members.cc
2049 CCOLLATE_CC=config/locale/generic/collate_members.cc
2050 CCTYPE_CC=config/locale/newlib/ctype_members.cc
2051 CMESSAGES_H=config/locale/generic/messages_members.h
2052 CMESSAGES_CC=config/locale/generic/messages_members.cc
2053 CMONEY_CC=config/locale/generic/monetary_members.cc
2054 CNUMERIC_CC=config/locale/generic/numeric_members.cc
2055 CTIME_H=config/locale/generic/time_members.h
2056 CTIME_CC=config/locale/generic/time_members.cc
2057 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
2061 # This is where the testsuite looks for locale catalogs, using the
2062 # -DLOCALEDIR define during testsuite compilation.
2063 glibcxx_localedir=${glibcxx_builddir}/po/share/locale
2064 AC_SUBST(glibcxx_localedir)
2066 # A standalone libintl (e.g., GNU libintl) may be in use.
2067 if test $USE_NLS = yes; then
2068 AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no)
2069 AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no)
2071 if test $USE_NLS = yes; then
2072 AC_DEFINE(_GLIBCXX_USE_NLS, 1,
2073 [Define if NLS translations are to be used.])
2078 AC_SUBST(CMESSAGES_H)
2079 AC_SUBST(CCODECVT_CC)
2080 AC_SUBST(CCOLLATE_CC)
2082 AC_SUBST(CMESSAGES_CC)
2084 AC_SUBST(CNUMERIC_CC)
2087 AC_SUBST(CLOCALE_CC)
2088 AC_SUBST(CLOCALE_INTERNAL_H)
2093 dnl Check for which std::allocator base class to use. The choice is
2094 dnl mapped from a subdirectory of include/ext.
2098 AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [
2099 AC_MSG_CHECKING([for std::allocator base class])
2100 GLIBCXX_ENABLE(libstdcxx-allocator,auto,[[[=KIND]]],
2101 [use KIND for target std::allocator base],
2102 [permit new|malloc|mt|bitmap|pool|yes|no|auto])
2104 # If they didn't use this option switch, or if they specified --enable
2105 # with no specific model, we'll have to look for one. If they
2106 # specified --disable (???), do likewise.
2107 if test $enable_libstdcxx_allocator = no ||
2108 test $enable_libstdcxx_allocator = yes;
2110 enable_libstdcxx_allocator=auto
2113 # Either a known package, or "auto". Auto implies the default choice
2114 # for a particular platform.
2115 enable_libstdcxx_allocator_flag=$enable_libstdcxx_allocator
2117 # Probe for host-specific support if no specific model is specified.
2119 if test $enable_libstdcxx_allocator_flag = auto; then
2120 case ${target_os} in
2121 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
2122 enable_libstdcxx_allocator_flag=new
2125 enable_libstdcxx_allocator_flag=new
2129 AC_MSG_RESULT($enable_libstdcxx_allocator_flag)
2132 # Set configure bits for specified locale package
2133 case ${enable_libstdcxx_allocator_flag} in
2135 ALLOCATOR_H=config/allocator/bitmap_allocator_base.h
2136 ALLOCATOR_NAME=__gnu_cxx::bitmap_allocator
2139 ALLOCATOR_H=config/allocator/malloc_allocator_base.h
2140 ALLOCATOR_NAME=__gnu_cxx::malloc_allocator
2143 ALLOCATOR_H=config/allocator/mt_allocator_base.h
2144 ALLOCATOR_NAME=__gnu_cxx::__mt_alloc
2147 ALLOCATOR_H=config/allocator/new_allocator_base.h
2148 ALLOCATOR_NAME=__gnu_cxx::new_allocator
2151 ALLOCATOR_H=config/allocator/pool_allocator_base.h
2152 ALLOCATOR_NAME=__gnu_cxx::__pool_alloc
2156 AC_SUBST(ALLOCATOR_H)
2157 AC_SUBST(ALLOCATOR_NAME)
2162 dnl Check for whether the Boost-derived checks should be turned on.
2164 dnl --enable-concept-checks turns them on.
2165 dnl --disable-concept-checks leaves them off.
2166 dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2167 dnl Where DEFAULT is either `yes' or `no'.
2169 AC_DEFUN([GLIBCXX_ENABLE_CONCEPT_CHECKS], [
2170 GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks])
2171 if test $enable_concept_checks = yes; then
2172 AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS, 1,
2173 [Define to use concept checking code from the boost libraries.])
2178 dnl Use extern templates.
2180 dnl --enable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 1
2181 dnl --disable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 0
2183 dnl + Usage: GLIBCXX_ENABLE_TEMPLATE[(DEFAULT)]
2184 dnl Where DEFAULT is `yes' or `no'.
2186 AC_DEFUN([GLIBCXX_ENABLE_EXTERN_TEMPLATE], [
2188 GLIBCXX_ENABLE(extern-template,$1,,[enable extern template])
2190 AC_MSG_CHECKING([for extern template support])
2191 AC_MSG_RESULT([$enable_extern_template])
2193 GLIBCXX_CONDITIONAL(ENABLE_EXTERN_TEMPLATE, test $enable_extern_template = yes)
2197 dnl Check for parallel mode pre-requisites, including OpenMP support.
2199 dnl + Usage: GLIBCXX_ENABLE_PARALLEL
2201 AC_DEFUN([GLIBCXX_ENABLE_PARALLEL], [
2205 # See if configured libgomp/omp.h exists. (libgomp may be in
2206 # noconfigdirs but not explicitly disabled.)
2207 if echo " ${TARGET_CONFIGDIRS} " | grep " libgomp " > /dev/null 2>&1 ; then
2208 enable_parallel=yes;
2210 AC_MSG_NOTICE([target-libgomp not built])
2213 AC_MSG_CHECKING([for parallel mode support])
2214 AC_MSG_RESULT([$enable_parallel])
2215 GLIBCXX_CONDITIONAL(ENABLE_PARALLEL, test $enable_parallel = yes)
2220 dnl Check for which I/O library to use: stdio, or something specific.
2222 dnl Default is stdio.
2224 AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [
2225 AC_MSG_CHECKING([for underlying I/O to use])
2226 GLIBCXX_ENABLE(cstdio,stdio,[[[=PACKAGE]]],
2227 [use target-specific I/O package], [permit stdio])
2229 # Now that libio has been removed, you can have any color you want as long
2230 # as it's black. This is one big no-op until other packages are added, but
2231 # showing the framework never hurts.
2232 case ${enable_cstdio} in
2234 CSTDIO_H=config/io/c_io_stdio.h
2235 BASIC_FILE_H=config/io/basic_file_stdio.h
2236 BASIC_FILE_CC=config/io/basic_file_stdio.cc
2237 AC_MSG_RESULT(stdio)
2242 AC_SUBST(BASIC_FILE_H)
2243 AC_SUBST(BASIC_FILE_CC)
2248 dnl Check for "unusual" flags to pass to the compiler while building.
2250 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
2251 dnl experimental flags such as -fpch, -fIMI, -Dfloat=char, etc.
2252 dnl --disable-cxx-flags passes nothing.
2253 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
2254 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
2255 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
2256 dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags)
2257 dnl If "default flags" is an empty string, the effect is the same
2258 dnl as --disable or --enable=no.
2260 AC_DEFUN([GLIBCXX_ENABLE_CXX_FLAGS], [dnl
2261 AC_MSG_CHECKING([for extra compiler flags for building])
2262 GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS],
2263 [pass compiler FLAGS when building library],
2264 [case "x$enable_cxx_flags" in
2265 xno | x) enable_cxx_flags= ;;
2267 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
2270 # Run through flags (either default or command-line) and set anything
2271 # extra (e.g., #defines) that must accompany particular g++ options.
2272 if test -n "$enable_cxx_flags"; then
2273 for f in $enable_cxx_flags; do
2277 *) # and we're trying to pass /what/ exactly?
2278 AC_MSG_ERROR([compiler flags start with a -]) ;;
2283 EXTRA_CXX_FLAGS="$enable_cxx_flags"
2284 AC_MSG_RESULT($EXTRA_CXX_FLAGS)
2285 AC_SUBST(EXTRA_CXX_FLAGS)
2290 dnl Check to see if debugging libraries are to be built.
2292 dnl --enable-libstdcxx-debug
2293 dnl builds a separate set of debugging libraries in addition to the
2294 dnl normal (shared, static) libstdc++ binaries.
2296 dnl --disable-libstdcxx-debug
2297 dnl builds only one (non-debug) version of libstdc++.
2299 dnl --enable-libstdcxx-debug-flags=FLAGS
2300 dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
2302 dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)]
2303 dnl Where DEFAULT is either `yes' or `no'.
2305 AC_DEFUN([GLIBCXX_ENABLE_DEBUG], [
2306 AC_MSG_CHECKING([for additional debug build])
2307 GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library])
2308 AC_MSG_RESULT($enable_libstdcxx_debug)
2309 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes)
2314 dnl Check for explicit debug flags.
2316 dnl --enable-libstdcxx-debug-flags='-O1'
2317 dnl is a general method for passing flags to be used when
2318 dnl building debug libraries with --enable-debug.
2320 dnl --disable-libstdcxx-debug-flags does nothing.
2321 dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
2322 dnl If "default flags" is an empty string, the effect is the same
2323 dnl as --disable or --enable=no.
2325 AC_DEFUN([GLIBCXX_ENABLE_DEBUG_FLAGS], [
2326 GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS],
2327 [pass compiler FLAGS when building debug library],
2328 [case "x$enable_libstdcxx_debug_flags" in
2329 xno | x) enable_libstdcxx_debug_flags= ;;
2331 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
2334 # Option parsed, now set things appropriately
2335 DEBUG_FLAGS="$enable_libstdcxx_debug_flags"
2336 AC_SUBST(DEBUG_FLAGS)
2338 AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS])
2343 dnl Check if the user only wants a freestanding library implementation.
2345 dnl --disable-hosted-libstdcxx will turn off most of the library build,
2346 dnl installing only the headers required by [17.4.1.3] and the language
2347 dnl support library. More than that will be built (to keep the Makefiles
2348 dnl conveniently clean), but not installed.
2351 dnl is_hosted (yes/no)
2354 dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0)
2356 AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [
2357 AC_ARG_ENABLE([hosted-libstdcxx],
2358 AC_HELP_STRING([--disable-hosted-libstdcxx],
2359 [only build freestanding C++ runtime support]),,
2362 enable_hosted_libstdcxx=no
2365 enable_hosted_libstdcxx=yes
2368 if test "$enable_hosted_libstdcxx" = no; then
2369 AC_MSG_NOTICE([Only freestanding libraries will be built])
2373 enable_libstdcxx_pch=no
2378 GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes)
2379 AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define,
2380 [Define to 1 if a full hosted library is built, or 0 if freestanding.])
2385 dnl Check for template specializations for the 'long long' type.
2386 dnl The result determines only whether 'long long' I/O is enabled; things
2387 dnl like numeric_limits<> specializations are always available.
2389 dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG
2390 dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined
2391 dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)]
2392 dnl Where DEFAULT is either `yes' or `no'.
2394 AC_DEFUN([GLIBCXX_ENABLE_LONG_LONG], [
2395 GLIBCXX_ENABLE(long-long,$1,,[enable template specializations for 'long long'])
2396 if test $enable_long_long = yes; then
2397 AC_DEFINE(_GLIBCXX_USE_LONG_LONG, 1,
2398 [Define if code specialized for long long should be used.])
2400 AC_MSG_CHECKING([for enabled long long specializations])
2401 AC_MSG_RESULT([$enable_long_long])
2406 dnl Check for decimal floating point.
2408 dnl http://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html#Decimal-Float
2410 dnl This checks to see if the host supports decimal floating point types.
2413 dnl _GLIBCXX_USE_DECIMAL_FLOAT
2415 AC_DEFUN([GLIBCXX_ENABLE_DECIMAL_FLOAT], [
2417 # Fake what AC_TRY_COMPILE does, without linking as this is
2418 # unnecessary for this test.
2420 cat > conftest.$ac_ext << EOF
2421 [#]line __oline__ "configure"
2431 AC_MSG_CHECKING([for ISO/IEC TR 24733 ])
2432 if AC_TRY_EVAL(ac_compile); then
2433 AC_DEFINE(_GLIBCXX_USE_DECIMAL_FLOAT, 1,
2434 [Define if ISO/IEC TR 24733 decimal floating point types are supported on this host.])
2439 AC_MSG_RESULT($enable_dfp)
2444 dnl Check for GNU 128-bit integer and floating point types.
2446 dnl Note: also checks that the types aren't standard types.
2449 dnl _GLIBCXX_USE_INT128
2450 dnl _GLIBCXX_USE_FLOAT128
2452 AC_DEFUN([GLIBCXX_ENABLE_INT128_FLOAT128], [
2457 # Fake what AC_TRY_COMPILE does, without linking as this is
2458 # unnecessary for this test.
2460 cat > conftest.$ac_ext << EOF
2461 [#]line __oline__ "configure"
2462 template<typename T1, typename T2>
2464 { typedef T2 type; };
2466 template<typename T>
2471 typename same<long, __int128>::type i1;
2472 typename same<long long, __int128>::type i2;
2476 AC_MSG_CHECKING([for __int128])
2477 if AC_TRY_EVAL(ac_compile); then
2478 AC_DEFINE(_GLIBCXX_USE_INT128, 1,
2479 [Define if __int128 is supported on this host.])
2484 AC_MSG_RESULT($enable_int128)
2487 cat > conftest.$ac_ext << EOF
2488 [#]line __oline__ "configure"
2489 template<typename T1, typename T2>
2491 { typedef T2 type; };
2493 template<typename T>
2498 typename same<double, __float128>::type f1;
2499 typename same<long double, __float128>::type f2;
2503 AC_MSG_CHECKING([for __float128])
2504 if AC_TRY_EVAL(ac_compile); then
2505 AC_DEFINE(_GLIBCXX_USE_FLOAT128, 1,
2506 [Define if __float128 is supported on this host.])
2511 AC_MSG_RESULT($enable_float128)
2518 dnl Check for template specializations for the 'wchar_t' type.
2520 dnl --enable-wchar_t defines _GLIBCXX_USE_WCHAR_T
2521 dnl --disable-wchar_t leaves _GLIBCXX_USE_WCHAR_T undefined
2522 dnl + Usage: GLIBCXX_ENABLE_WCHAR_T[(DEFAULT)]
2523 dnl Where DEFAULT is either `yes' or `no'.
2525 dnl Necessary support must also be present.
2527 AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [
2528 GLIBCXX_ENABLE(wchar_t,$1,,[enable template specializations for 'wchar_t'])
2530 # Test wchar.h for mbstate_t, which is needed for char_traits and fpos.
2531 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
2532 AC_MSG_CHECKING([for mbstate_t])
2533 AC_TRY_COMPILE([#include <wchar.h>],
2534 [mbstate_t teststate;],
2535 have_mbstate_t=yes, have_mbstate_t=no)
2536 AC_MSG_RESULT($have_mbstate_t)
2537 if test x"$have_mbstate_t" = xyes; then
2538 AC_DEFINE(HAVE_MBSTATE_T,1,[Define if mbstate_t exists in wchar.h.])
2541 # Test it always, for use in GLIBCXX_ENABLE_C99, together with
2543 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
2545 if test x"$enable_wchar_t" = x"yes"; then
2550 if test x"$ac_has_wchar_h" = xyes &&
2551 test x"$ac_has_wctype_h" = xyes; then
2552 AC_TRY_COMPILE([#include <wchar.h>
2613 ],[],[], [enable_wchar_t=no])
2621 if test x"$enable_wchar_t" = x"yes"; then
2622 AC_DEFINE(_GLIBCXX_USE_WCHAR_T, 1,
2623 [Define if code specialized for wchar_t should be used.])
2626 AC_MSG_CHECKING([for enabled wchar_t specializations])
2627 AC_MSG_RESULT([$enable_wchar_t])
2632 dnl Check to see if building and using a C++ precompiled header can be done.
2634 dnl --enable-libstdcxx-pch=yes
2635 dnl default, this shows intent to use stdc++.h.gch If it looks like it
2636 dnl may work, after some light-hearted attempts to puzzle out compiler
2637 dnl support, flip bits on in include/Makefile.am
2639 dnl --disable-libstdcxx-pch
2640 dnl turns off attempts to use or build stdc++.h.gch.
2643 dnl glibcxx_PCHFLAGS
2645 AC_DEFUN([GLIBCXX_ENABLE_PCH], [
2646 GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers])
2647 if test $enable_libstdcxx_pch = yes; then
2648 AC_CACHE_CHECK([for compiler with PCH support],
2649 [glibcxx_cv_prog_CXX_pch],
2650 [ac_save_CXXFLAGS="$CXXFLAGS"
2651 CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
2654 echo '#include <math.h>' > conftest.h
2655 if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \
2656 -o conftest.h.gch 1>&5 2>&1 &&
2657 echo '#error "pch failed"' > conftest.h &&
2658 echo '#include "conftest.h"' > conftest.cc &&
2659 $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ;
2661 glibcxx_cv_prog_CXX_pch=yes
2663 glibcxx_cv_prog_CXX_pch=no
2666 CXXFLAGS=$ac_save_CXXFLAGS
2669 enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch
2672 AC_MSG_CHECKING([for enabled PCH])
2673 AC_MSG_RESULT([$enable_libstdcxx_pch])
2675 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes)
2676 if test $enable_libstdcxx_pch = yes; then
2677 glibcxx_PCHFLAGS="-include bits/stdc++.h"
2681 AC_SUBST(glibcxx_PCHFLAGS)
2686 dnl Check for atomic builtins.
2688 dnl http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html#Atomic-Builtins
2690 dnl This checks to see if the host supports the compiler-generated
2691 dnl builtins for atomic operations for various integral sizes. Note, this
2692 dnl is intended to be an all-or-nothing switch, so all the atomic operations
2693 dnl that are used should be checked.
2696 dnl libgomp and libgfortran use a link test, see CHECK_SYNC_FETCH_AND_ADD.
2698 AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
2701 old_CXXFLAGS="$CXXFLAGS"
2703 # Do link tests if possible, instead asm tests, limited to some platforms
2704 # see discussion in PR target/40134, PR libstdc++/40133 and the thread
2705 # starting at http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00322.html
2706 atomic_builtins_link_tests=no
2707 if test x$gcc_no_link != xyes; then
2708 # Can do link tests. Limit to some tested platforms
2710 *-*-linux* | *-*-uclinux* | *-*-kfreebsd*-gnu | *-*-gnu*)
2711 atomic_builtins_link_tests=yes
2716 if test x$atomic_builtins_link_tests = xyes; then
2720 CXXFLAGS="$CXXFLAGS -fno-exceptions"
2722 AC_MSG_CHECKING([for atomic builtins for bool])
2723 AC_CACHE_VAL(glibcxx_cv_atomic_bool, [
2726 [typedef bool atomic_type;
2729 const atomic_type c3(0);
2730 __sync_fetch_and_add(&c1, c2);
2731 __sync_val_compare_and_swap(&c1, c3, c2);
2732 __sync_lock_test_and_set(&c1, c3);
2733 __sync_lock_release(&c1);
2734 __sync_synchronize();],
2735 [glibcxx_cv_atomic_bool=yes],
2736 [glibcxx_cv_atomic_bool=no])
2738 AC_MSG_RESULT($glibcxx_cv_atomic_bool)
2740 AC_MSG_CHECKING([for atomic builtins for short])
2741 AC_CACHE_VAL(glibcxx_cv_atomic_short, [
2744 [typedef short atomic_type;
2747 const atomic_type c3(0);
2748 __sync_fetch_and_add(&c1, c2);
2749 __sync_val_compare_and_swap(&c1, c3, c2);
2750 __sync_lock_test_and_set(&c1, c3);
2751 __sync_lock_release(&c1);
2752 __sync_synchronize();],
2753 [glibcxx_cv_atomic_short=yes],
2754 [glibcxx_cv_atomic_short=no])
2756 AC_MSG_RESULT($glibcxx_cv_atomic_short)
2758 AC_MSG_CHECKING([for atomic builtins for int])
2759 AC_CACHE_VAL(glibcxx_cv_atomic_int, [
2762 [typedef int atomic_type;
2765 const atomic_type c3(0);
2766 __sync_fetch_and_add(&c1, c2);
2767 __sync_val_compare_and_swap(&c1, c3, c2);
2768 __sync_lock_test_and_set(&c1, c3);
2769 __sync_lock_release(&c1);
2770 __sync_synchronize();],
2771 [glibcxx_cv_atomic_int=yes],
2772 [glibcxx_cv_atomic_int=no])
2774 AC_MSG_RESULT($glibcxx_cv_atomic_int)
2776 AC_MSG_CHECKING([for atomic builtins for long long])
2777 AC_CACHE_VAL(glibcxx_cv_atomic_long_long, [
2780 [typedef long long atomic_type;
2783 const atomic_type c3(0);
2784 __sync_fetch_and_add(&c1, c2);
2785 __sync_val_compare_and_swap(&c1, c3, c2);
2786 __sync_lock_test_and_set(&c1, c3);
2787 __sync_lock_release(&c1);
2788 __sync_synchronize();],
2789 [glibcxx_cv_atomic_long_long=yes],
2790 [glibcxx_cv_atomic_long_long=no])
2792 AC_MSG_RESULT($glibcxx_cv_atomic_long_long)
2798 # Compile unoptimized.
2801 # Fake what AC_TRY_COMPILE does.
2803 cat > conftest.$ac_ext << EOF
2804 [#]line __oline__ "configure"
2807 typedef bool atomic_type;
2810 const atomic_type c3(0);
2811 __sync_fetch_and_add(&c1, c2);
2812 __sync_val_compare_and_swap(&c1, c3, c2);
2813 __sync_lock_test_and_set(&c1, c3);
2814 __sync_lock_release(&c1);
2815 __sync_synchronize();
2820 AC_MSG_CHECKING([for atomic builtins for bool])
2821 if AC_TRY_EVAL(ac_compile); then
2822 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
2823 glibcxx_cv_atomic_bool=no
2825 glibcxx_cv_atomic_bool=yes
2828 AC_MSG_RESULT($glibcxx_cv_atomic_bool)
2831 cat > conftest.$ac_ext << EOF
2832 [#]line __oline__ "configure"
2835 typedef short atomic_type;
2838 const atomic_type c3(0);
2839 __sync_fetch_and_add(&c1, c2);
2840 __sync_val_compare_and_swap(&c1, c3, c2);
2841 __sync_lock_test_and_set(&c1, c3);
2842 __sync_lock_release(&c1);
2843 __sync_synchronize();
2848 AC_MSG_CHECKING([for atomic builtins for short])
2849 if AC_TRY_EVAL(ac_compile); then
2850 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
2851 glibcxx_cv_atomic_short=no
2853 glibcxx_cv_atomic_short=yes
2856 AC_MSG_RESULT($glibcxx_cv_atomic_short)
2859 cat > conftest.$ac_ext << EOF
2860 [#]line __oline__ "configure"
2863 // NB: _Atomic_word not necessarily int.
2864 typedef int atomic_type;
2867 const atomic_type c3(0);
2868 __sync_fetch_and_add(&c1, c2);
2869 __sync_val_compare_and_swap(&c1, c3, c2);
2870 __sync_lock_test_and_set(&c1, c3);
2871 __sync_lock_release(&c1);
2872 __sync_synchronize();
2877 AC_MSG_CHECKING([for atomic builtins for int])
2878 if AC_TRY_EVAL(ac_compile); then
2879 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
2880 glibcxx_cv_atomic_int=no
2882 glibcxx_cv_atomic_int=yes
2885 AC_MSG_RESULT($glibcxx_cv_atomic_int)
2888 cat > conftest.$ac_ext << EOF
2889 [#]line __oline__ "configure"
2892 typedef long long atomic_type;
2895 const atomic_type c3(0);
2896 __sync_fetch_and_add(&c1, c2);
2897 __sync_val_compare_and_swap(&c1, c3, c2);
2898 __sync_lock_test_and_set(&c1, c3);
2899 __sync_lock_release(&c1);
2900 __sync_synchronize();
2905 AC_MSG_CHECKING([for atomic builtins for long long])
2906 if AC_TRY_EVAL(ac_compile); then
2907 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
2908 glibcxx_cv_atomic_long_long=no
2910 glibcxx_cv_atomic_long_long=yes
2913 AC_MSG_RESULT($glibcxx_cv_atomic_long_long)
2918 CXXFLAGS="$old_CXXFLAGS"
2921 # Set atomicity_dir to builtins if either of above tests pass.
2922 if test $glibcxx_cv_atomic_int = yes || test $glibcxx_cv_atomic_bool = yes ; then
2923 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1,
2924 [Define if the compiler supports C++11 atomics.])
2925 atomicity_dir=cpu/generic/atomicity_builtins
2928 # If still generic, set to mutex.
2929 if test $atomicity_dir = "cpu/generic" ; then
2930 atomicity_dir=cpu/generic/atomicity_mutex
2931 AC_MSG_WARN([No native atomic operations are provided for this platform.])
2932 if test "x$target_thread_file" = xsingle; then
2933 AC_MSG_WARN([They cannot be faked when thread support is disabled.])
2934 AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.])
2936 AC_MSG_WARN([They will be faked using a mutex.])
2937 AC_MSG_WARN([Performance of certain classes will degrade as a result.])
2945 dnl Check for exception handling support. If an explicit enable/disable
2946 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
2947 dnl target may or may not support call frame exceptions.
2949 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
2950 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
2951 dnl Neither one forces an attempt at detection.
2954 dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it
2956 AC_DEFUN([GLIBCXX_ENABLE_SJLJ_EXCEPTIONS], [
2957 AC_MSG_CHECKING([for exception model to use])
2960 GLIBCXX_ENABLE(sjlj-exceptions,auto,,
2961 [force use of builtin_setjmp for exceptions],
2962 [permit yes|no|auto])
2964 if test $enable_sjlj_exceptions = auto; then
2965 # Botheration. Now we've got to detect the exception model. Link tests
2966 # against libgcc.a are problematic since we've not been given proper -L
2967 # bits for single-tree newlib and libgloss.
2969 # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
2970 cat > conftest.$ac_ext << EOF
2971 [#]line __oline__ "configure"
2980 old_CXXFLAGS="$CXXFLAGS"
2982 if AC_TRY_EVAL(ac_compile); then
2983 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
2984 enable_sjlj_exceptions=yes
2985 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
2986 enable_sjlj_exceptions=no
2987 elif grep __cxa_end_cleanup conftest.s >/dev/null 2>&1 ; then
2988 enable_sjlj_exceptions=no
2991 CXXFLAGS="$old_CXXFLAGS"
2995 # This is a tad weird, for hysterical raisins. We have to map
2996 # enable/disable to two different models.
2997 case $enable_sjlj_exceptions in
2999 AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
3000 [Define if the compiler is configured for setjmp/longjmp exceptions.])
3001 ac_exception_model_name=sjlj
3004 ac_exception_model_name="call frame"
3007 AC_MSG_ERROR([unable to detect exception model])
3011 AC_MSG_RESULT($ac_exception_model_name)
3016 dnl Allow visibility attributes to be used on namespaces, objects, etc.
3018 dnl --enable-libstdcxx-visibility enables attempt to use visibility attributes.
3019 dnl --disable-libstdcxx-visibility turns off all use of visibility attributes.
3020 dnl + Usage: GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY[(DEFAULT)]
3021 dnl Where DEFAULT is 'yes'.
3023 AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY], [
3024 GLIBCXX_ENABLE(libstdcxx-visibility,$1,,[enables visibility safe usage])
3026 if test x$enable_libstdcxx_visibility = xyes ; then
3027 dnl all hail libgfortran
3028 dnl Check whether the target supports hidden visibility.
3029 AC_CACHE_CHECK([whether the target supports hidden visibility],
3030 glibcxx_cv_have_attribute_visibility, [
3031 save_CFLAGS="$CFLAGS"
3032 CFLAGS="$CFLAGS -Werror"
3033 AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }],
3034 [], glibcxx_cv_have_attribute_visibility=yes,
3035 glibcxx_cv_have_attribute_visibility=no)
3036 CFLAGS="$save_CFLAGS"])
3037 if test $glibcxx_cv_have_attribute_visibility = no; then
3038 enable_libstdcxx_visibility=no
3042 GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_libstdcxx_visibility = yes)
3043 AC_MSG_NOTICE([visibility supported: $enable_libstdcxx_visibility])
3048 dnl Add version tags to symbols in shared library (or not), additionally
3049 dnl marking other symbols as private/local (or not).
3051 dnl Sets libtool_VERSION, and determines shared library SONAME.
3053 dnl This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
3055 dnl --enable-symvers=style adds a version script to the linker call when
3056 dnl creating the shared library. The choice of version script is
3057 dnl controlled by 'style'.
3058 dnl --disable-symvers does not.
3060 dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)]
3061 dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to
3062 dnl choose a default style based on linker characteristics. Passing
3063 dnl 'no' disables versioning.
3065 AC_DEFUN([GLIBCXX_ENABLE_SYMVERS], [
3067 GLIBCXX_ENABLE(symvers,$1,[[[=STYLE]]],
3068 [enables symbol versioning of the shared library],
3069 [permit yes|no|gnu|gnu-versioned-namespace|darwin|darwin-export|sun])
3071 # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we
3072 # don't know enough about $LD to do tricks...
3073 AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES])
3074 # Sun style symbol versions needs GNU c++filt for make_sunver.pl to work
3075 # with extern "C++" in version scripts.
3076 AC_REQUIRE([GCC_PROG_GNU_CXXFILT])
3078 # Turn a 'yes' into a suitable default.
3079 if test x$enable_symvers = xyes ; then
3080 if test $enable_shared = no || test "x$LD" = x || test x$gcc_no_link = xyes; then
3083 if test $with_gnu_ld = yes ; then
3084 case ${target_os} in
3086 enable_symvers=no ;;
3088 enable_symvers=gnu ;;
3091 case ${target_os} in
3093 enable_symvers=darwin ;;
3094 # Sun symbol versioning exists since Solaris 2.5.
3095 solaris2.[[5-9]]* | solaris2.1[[0-9]]*)
3096 # make_sunver.pl needs GNU c++filt to support extern "C++" in
3097 # version scripts, so disable symbol versioning if none can be
3099 if test -z "$ac_cv_path_CXXFILT"; then
3100 AC_MSG_WARN([=== You have requested Sun symbol versioning, but])
3101 AC_MSG_WARN([=== no GNU c++filt could be found.])
3102 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3109 enable_symvers=no ;;
3115 # Check to see if 'darwin' or 'darwin-export' can win.
3116 if test x$enable_symvers = xdarwin-export ; then
3117 enable_symvers=darwin
3120 # Check if 'sun' was requested on non-Solaris 2 platforms.
3121 if test x$enable_symvers = xsun ; then
3122 case ${target_os} in
3128 AC_MSG_WARN([=== You have requested Sun symbol versioning, but])
3129 AC_MSG_WARN([=== you are not targetting Solaris 2.])
3130 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3136 # Check to see if 'gnu' can win.
3137 if test $enable_symvers = gnu ||
3138 test $enable_symvers = gnu-versioned-namespace ||
3139 test $enable_symvers = sun; then
3140 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
3141 AC_MSG_CHECKING([for shared libgcc])
3142 ac_save_CFLAGS="$CFLAGS"
3144 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no)
3145 CFLAGS="$ac_save_CFLAGS"
3146 if test $glibcxx_shared_libgcc = no; then
3147 cat > conftest.c <<EOF
3148 int main (void) { return 0; }
3151 glibcxx_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
3152 -shared -shared-libgcc -o conftest.so \
3153 conftest.c -v 2>&1 >/dev/null \
3154 | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'`
3156 rm -f conftest.c conftest.so
3157 if test x${glibcxx_libgcc_s_suffix+set} = xset; then
3158 CFLAGS=" -lgcc_s$glibcxx_libgcc_s_suffix"
3159 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes)
3160 CFLAGS="$ac_save_CFLAGS"
3163 AC_MSG_RESULT($glibcxx_shared_libgcc)
3165 # For GNU ld, we need at least this version. The format is described in
3166 # GLIBCXX_CHECK_LINKER_FEATURES above.
3167 glibcxx_min_gnu_ld_version=21400
3169 # If no shared libgcc, can't win.
3170 if test $glibcxx_shared_libgcc != yes; then
3171 AC_MSG_WARN([=== You have requested GNU symbol versioning, but])
3172 AC_MSG_WARN([=== you are not building a shared libgcc_s.])
3173 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3175 elif test $with_gnu_ld != yes && test $enable_symvers = sun; then
3176 : All interesting versions of Sun ld support sun style symbol versioning.
3177 elif test $with_gnu_ld != yes ; then
3179 AC_MSG_WARN([=== You have requested GNU symbol versioning, but])
3180 AC_MSG_WARN([=== you are not using the GNU linker.])
3181 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3183 elif test $glibcxx_ld_is_gold = yes ; then
3184 : All versions of gold support symbol versioning.
3185 elif test $glibcxx_gnu_ld_version -lt $glibcxx_min_gnu_ld_version ; then
3186 # The right tools, the right setup, but too old. Fallbacks?
3187 AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for)
3188 AC_MSG_WARN(=== full symbol versioning support in this release of GCC.)
3189 AC_MSG_WARN(=== You would need to upgrade your binutils to version)
3190 AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.)
3191 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3196 # For libtool versioning info, format is CURRENT:REVISION:AGE
3197 libtool_VERSION=6:17:0
3199 # Everything parsed; figure out what files and settings to use.
3200 case $enable_symvers in
3202 SYMVER_FILE=config/abi/pre/none.ver
3205 SYMVER_FILE=config/abi/pre/gnu.ver
3206 AC_DEFINE(_GLIBCXX_SYMVER_GNU, 1,
3207 [Define to use GNU versioning in the shared library.])
3209 gnu-versioned-namespace)
3210 libtool_VERSION=7:0:0
3211 SYMVER_FILE=config/abi/pre/gnu-versioned-namespace.ver
3212 AC_DEFINE(_GLIBCXX_SYMVER_GNU_NAMESPACE, 1,
3213 [Define to use GNU namespace versioning in the shared library.])
3216 SYMVER_FILE=config/abi/pre/gnu.ver
3217 AC_DEFINE(_GLIBCXX_SYMVER_DARWIN, 1,
3218 [Define to use darwin versioning in the shared library.])
3221 SYMVER_FILE=config/abi/pre/gnu.ver
3222 AC_DEFINE(_GLIBCXX_SYMVER_SUN, 1,
3223 [Define to use Sun versioning in the shared library.])
3227 if test x$enable_symvers != xno ; then
3228 AC_DEFINE(_GLIBCXX_SYMVER, 1,
3229 [Define to use symbol versioning in the shared library.])
3232 AC_CACHE_CHECK([whether the target supports .symver directive],
3233 glibcxx_cv_have_as_symver_directive, [
3234 AC_TRY_COMPILE([void foo (void); __asm (".symver foo, bar@SYMVER");],
3235 [], glibcxx_cv_have_as_symver_directive=yes,
3236 glibcxx_cv_have_as_symver_directive=no)])
3237 if test $glibcxx_cv_have_as_symver_directive = yes; then
3238 AC_DEFINE(HAVE_AS_SYMVER_DIRECTIVE, 1,
3239 [Define to 1 if the target assembler supports .symver directive.])
3242 AC_SUBST(SYMVER_FILE)
3243 AC_SUBST(port_specific_symbol_files)
3244 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS, test $enable_symvers != no)
3245 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU, test $enable_symvers = gnu)
3246 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU_NAMESPACE, test $enable_symvers = gnu-versioned-namespace)
3247 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_DARWIN, test $enable_symvers = darwin)
3248 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SUN, test $enable_symvers = sun)
3249 AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers)
3251 if test $enable_symvers != no ; then
3252 case ${target_os} in
3253 # The Solaris 2 runtime linker doesn't support the GNU extension of
3254 # binding the same symbol to different versions
3256 symvers_renaming=no ;;
3257 # Other platforms with GNU symbol versioning (GNU/Linux, more?) do.
3259 AC_DEFINE(HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT, 1,
3260 [Define to 1 if the target runtime linker supports binding the same symbol to different versions.])
3261 symvers_renaming=yes ;;
3266 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SOL2, test $symvers_renaming = no)
3268 # Now, set up compatibility support, if any.
3269 # In addition, need this to deal with std::size_t mangling in
3270 # src/compatibility.cc. In a perfect world, could use
3271 # typeid(std::size_t).name()[0] to do direct substitution.
3272 AC_MSG_CHECKING([for size_t as unsigned int])
3273 ac_save_CFLAGS="$CFLAGS"
3275 AC_TRY_COMPILE(, [__SIZE_TYPE__* stp; unsigned int* uip; stp = uip;],
3276 [glibcxx_size_t_is_i=yes], [glibcxx_size_t_is_i=no])
3277 CFLAGS=$ac_save_CFLAGS
3278 if test "$glibcxx_size_t_is_i" = yes; then
3279 AC_DEFINE(_GLIBCXX_SIZE_T_IS_UINT, 1, [Define if size_t is unsigned int.])
3281 AC_MSG_RESULT([$glibcxx_size_t_is_i])
3283 AC_MSG_CHECKING([for ptrdiff_t as int])
3284 ac_save_CFLAGS="$CFLAGS"
3286 AC_TRY_COMPILE(, [__PTRDIFF_TYPE__* ptp; int* ip; ptp = ip;],
3287 [glibcxx_ptrdiff_t_is_i=yes], [glibcxx_ptrdiff_t_is_i=no])
3288 CFLAGS=$ac_save_CFLAGS
3289 if test "$glibcxx_ptrdiff_t_is_i" = yes; then
3290 AC_DEFINE(_GLIBCXX_PTRDIFF_T_IS_INT, 1, [Define if ptrdiff_t is int.])
3292 AC_MSG_RESULT([$glibcxx_ptrdiff_t_is_i])
3297 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
3298 dnl We must stage the required headers so that they will be installed
3299 dnl with the library (unlike libgcc, the STL implementation is provided
3300 dnl solely within headers). Since we must not inject random user-space
3301 dnl macro names into user-provided C++ code, we first stage into <file>-in
3302 dnl and process to <file> with an output command. The reason for a two-
3303 dnl stage process here is to correctly handle $srcdir!=$objdir without
3304 dnl having to write complex code (the sed commands to clean the macro
3305 dnl namespace are complex and fragile enough as it is). We must also
3306 dnl add a relative path so that -I- is supported properly.
3308 AC_DEFUN([GLIBCXX_ENABLE_THREADS], [
3309 AC_MSG_CHECKING([for thread model used by GCC])
3310 target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
3311 AC_MSG_RESULT([$target_thread_file])
3316 dnl Check if gthread implementation defines the types and functions
3317 dnl required by the c++0x thread library. Conforming gthread
3318 dnl implementations can define __GTHREADS_CXX0X to enable use with c++0x.
3320 AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [
3324 ac_save_CXXFLAGS="$CXXFLAGS"
3325 CXXFLAGS="$CXXFLAGS -fno-exceptions \
3326 -I${toplevel_srcdir}/libgcc -I${toplevel_builddir}/libgcc"
3328 target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
3329 case $target_thread_file in
3331 CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS"
3334 AC_MSG_CHECKING([whether it can be safely assumed that mutex_timedlock is available])
3336 AC_TRY_COMPILE([#include <unistd.h>],
3338 // In case of POSIX threads check _POSIX_TIMEOUTS.
3339 #if (defined(_PTHREADS) \
3340 && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0))
3343 ], [ac_gthread_use_mutex_timedlock=1], [ac_gthread_use_mutex_timedlock=0])
3345 AC_DEFINE_UNQUOTED(_GTHREAD_USE_MUTEX_TIMEDLOCK, $ac_gthread_use_mutex_timedlock,
3346 [Define to 1 if mutex_timedlock is available.])
3348 if test $ac_gthread_use_mutex_timedlock = 1 ; then res_mutex_timedlock=yes ;
3349 else res_mutex_timedlock=no ; fi
3350 AC_MSG_RESULT([$res_mutex_timedlock])
3352 AC_MSG_CHECKING([for gthreads library])
3354 AC_TRY_COMPILE([#include "gthr.h"],
3356 #ifndef __GTHREADS_CXX0X
3359 ], [ac_has_gthreads=yes], [ac_has_gthreads=no])
3361 AC_MSG_RESULT([$ac_has_gthreads])
3363 if test x"$ac_has_gthreads" = x"yes"; then
3364 AC_DEFINE(_GLIBCXX_HAS_GTHREADS, 1,
3365 [Define if gthreads library is available.])
3368 CXXFLAGS="$ac_save_CXXFLAGS"
3373 # Check whether LC_MESSAGES is available in <locale.h>.
3374 # Ulrich Drepper <drepper@cygnus.com>, 1995.
3376 # This file file be copied and used freely without restrictions. It can
3377 # be used in projects which are not available under the GNU Public License
3378 # but which still want to provide support for the GNU gettext functionality.
3379 # Please note that the actual code is *not* freely available.
3380 AC_DEFUN([AC_LC_MESSAGES], [
3381 AC_CHECK_HEADER(locale.h, [
3382 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
3383 [AC_TRY_COMPILE([#include <locale.h>], [return LC_MESSAGES],
3384 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
3385 if test $ac_cv_val_LC_MESSAGES = yes; then
3386 AC_DEFINE(HAVE_LC_MESSAGES, 1,
3387 [Define if LC_MESSAGES is available in <locale.h>.])
3393 dnl Check whether get_nprocs is available in <sys/sysinfo.h>, and define _GLIBCXX_USE_GET_NPROCS.
3395 AC_DEFUN([GLIBCXX_CHECK_GET_NPROCS], [
3399 ac_save_CXXFLAGS="$CXXFLAGS"
3400 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3402 AC_MSG_CHECKING([for get_nprocs])
3403 AC_CACHE_VAL(glibcxx_cv_GET_NPROCS, [
3404 GCC_TRY_COMPILE_OR_LINK(
3405 [#include <sys/sysinfo.h>],
3406 [int n = get_nprocs();],
3407 [glibcxx_cv_GET_NPROCS=yes],
3408 [glibcxx_cv_GET_NPROCS=no])
3410 if test $glibcxx_cv_GET_NPROCS = yes; then
3411 AC_DEFINE(_GLIBCXX_USE_GET_NPROCS, 1, [Define if get_nprocs is available in <sys/sysinfo.h>.])
3413 AC_MSG_RESULT($glibcxx_cv_GET_NPROCS)
3415 CXXFLAGS="$ac_save_CXXFLAGS"
3420 dnl Check whether sysconf(_SC_NPROCESSORS_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROCESSORS_ONLN.
3422 AC_DEFUN([GLIBCXX_CHECK_SC_NPROCESSORS_ONLN], [
3426 ac_save_CXXFLAGS="$CXXFLAGS"
3427 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3429 AC_MSG_CHECKING([for _SC_NPROCESSORS_ONLN])
3430 AC_CACHE_VAL(glibcxx_cv_SC_NPROCESSORS_ONLN, [
3431 GCC_TRY_COMPILE_OR_LINK(
3432 [#include <unistd.h>],
3433 [int n = sysconf(_SC_NPROCESSORS_ONLN);],
3434 [glibcxx_cv_SC_NPROCESSORS_ONLN=yes],
3435 [glibcxx_cv_SC_NPROCESSORS_ONLN=no])
3437 if test $glibcxx_cv_SC_NPROCESSORS_ONLN = yes; then
3438 AC_DEFINE(_GLIBCXX_USE_SC_NPROCESSORS_ONLN, 1, [Define if _SC_NPROCESSORS_ONLN is available in <unistd.h>.])
3440 AC_MSG_RESULT($glibcxx_cv_SC_NPROCESSORS_ONLN)
3442 CXXFLAGS="$ac_save_CXXFLAGS"
3447 dnl Check whether sysconf(_SC_NPROC_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROC_ONLN.
3449 AC_DEFUN([GLIBCXX_CHECK_SC_NPROC_ONLN], [
3453 ac_save_CXXFLAGS="$CXXFLAGS"
3454 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3456 AC_MSG_CHECKING([for _SC_NPROC_ONLN])
3457 AC_CACHE_VAL(glibcxx_cv_SC_NPROC_ONLN, [
3458 GCC_TRY_COMPILE_OR_LINK(
3459 [#include <unistd.h>],
3460 [int n = sysconf(_SC_NPROC_ONLN);],
3461 [glibcxx_cv_SC_NPROC_ONLN=yes],
3462 [glibcxx_cv_SC_NPROC_ONLN=no])
3464 if test $glibcxx_cv_SC_NPROC_ONLN = yes; then
3465 AC_DEFINE(_GLIBCXX_USE_SC_NPROC_ONLN, 1, [Define if _SC_NPROC_ONLN is available in <unistd.h>.])
3467 AC_MSG_RESULT($glibcxx_cv_SC_NPROC_ONLN)
3469 CXXFLAGS="$ac_save_CXXFLAGS"
3474 dnl Check whether pthread_num_processors_np is available in <pthread.h>, and define _GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP.
3476 AC_DEFUN([GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP], [
3480 ac_save_CXXFLAGS="$CXXFLAGS"
3481 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3483 AC_MSG_CHECKING([for pthreads_num_processors_np])
3484 AC_CACHE_VAL(glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP, [
3485 GCC_TRY_COMPILE_OR_LINK(
3486 [#include <pthread.h>],
3487 [int n = pthread_num_processors_np();],
3488 [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=yes],
3489 [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=no])
3491 if test $glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP = yes; then
3492 AC_DEFINE(_GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP, 1, [Define if pthreads_num_processors_np is available in <pthread.h>.])
3494 AC_MSG_RESULT($glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP)
3496 CXXFLAGS="$ac_save_CXXFLAGS"
3501 dnl Check whether sysctl is available in <pthread.h>, and define _GLIBCXX_USE_SYSCTL_HW_NCPU.
3503 AC_DEFUN([GLIBCXX_CHECK_SYSCTL_HW_NCPU], [
3507 ac_save_CXXFLAGS="$CXXFLAGS"
3508 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3510 AC_MSG_CHECKING([for hw.ncpu sysctl])
3511 AC_CACHE_VAL(glibcxx_cv_SYSCTL_HW_NCPU, [
3512 GCC_TRY_COMPILE_OR_LINK(
3515 #include <sys/sysctl.h>
3519 size_t size = sizeof(count);
3520 int mib[] = { CTL_HW, HW_NCPU };
3521 sysctl(mib, 2, &count, &size, NULL, 0);
3523 [glibcxx_cv_SYSCTL_HW_NCPU=yes],
3524 [glibcxx_cv_SYSCTL_HW_NCPU=no])
3526 if test $glibcxx_cv_SYSCTL_HW_NCPU = yes; then
3527 AC_DEFINE(_GLIBCXX_USE_SYSCTL_HW_NCPU, 1, [Define if sysctl(), CTL_HW and HW_NCPU are available in <sys/sysctl.h>.])
3529 AC_MSG_RESULT($glibcxx_cv_SYSCTL_HW_NCPU)
3531 CXXFLAGS="$ac_save_CXXFLAGS"
3535 # Macros from the top-level gcc directory.
3536 m4_include([../config/gc++filt.m4])
3537 m4_include([../config/tls.m4])