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 $host.
36 dnl glibcxx_builddir (absolute path)
37 dnl glibcxx_srcdir (absolute path)
38 dnl toplevel_builddir (absolute path)
39 dnl toplevel_srcdir (absolute path)
42 dnl with_target_subdir
44 dnl - the variables in GLIBCXX_CHECK_HOST / configure.host
45 dnl - default settings for all AM_CONFITIONAL test variables
46 dnl - lots of tools, like CC and CXX
48 AC_DEFUN([GLIBCXX_CONFIGURE], [
49 # Keep these sync'd with the list in Makefile.am. The first provides an
50 # expandable list at autoconf time; the second provides an expandable list
51 # (i.e., shell variable) at configure time.
52 m4_define([glibcxx_SUBDIRS],[include libsupc++ python src doc po testsuite])
53 SUBDIRS='glibcxx_SUBDIRS'
55 # These need to be absolute paths, yet at the same time need to
56 # canonicalize only relative paths, because then amd will not unmount
57 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
58 glibcxx_builddir=`${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 of the documentation directory.
636 dnl XSLTPROC must be set before this
639 dnl glibcxx_stylesheets
643 AC_DEFUN([GLIBCXX_CONFIGURE_DOCBOOK], [
645 AC_MSG_CHECKING([for stylesheets used in generation of documentation])
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
676 dnl Set up *_INCLUDES variables for all sundry Makefile.am's.
680 dnl TOPLEVEL_INCLUDES
682 AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [
683 # Used for every C++ compile we perform.
685 -I$glibcxx_builddir/include/$host_alias \
686 -I$glibcxx_builddir/include \
687 -I$glibcxx_srcdir/libsupc++"
689 # For Canadian crosses, pick this up too.
690 if test $CANADIAN = yes; then
691 GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}"
694 # Stuff in the actual top level. Currently only used by libsupc++ to
695 # get unwind* headers from the libgcc dir.
696 #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc -I$(toplevel_srcdir)/include'
697 TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc'
699 # Now, export this to all the little Makefiles....
700 AC_SUBST(GLIBCXX_INCLUDES)
701 AC_SUBST(TOPLEVEL_INCLUDES)
706 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
707 dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.)
710 dnl OPTIMIZE_CXXFLAGS
713 AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [
714 # Optimization flags that are probably a good idea for thrill-seekers. Just
715 # uncomment the lines below and make, everything else is ready to go...
716 # Alternatively OPTIMIZE_CXXFLAGS can be set in configure.host.
717 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
718 AC_SUBST(OPTIMIZE_CXXFLAGS)
720 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
726 dnl All installation directory information is determined here.
730 dnl glibcxx_prefixdir
731 dnl glibcxx_toolexecdir
732 dnl glibcxx_toolexeclibdir
734 dnl Assumes cross_compiling bits already done, and with_cross_host in
737 dnl This logic must match gcc/configure.ac's setting of gcc_gxx_include_dir.
738 dnl config/gxx-include-dir.m4 must be kept consistant with this as well.
739 AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [
740 glibcxx_toolexecdir=no
741 glibcxx_toolexeclibdir=no
742 glibcxx_prefixdir=$prefix
744 AC_MSG_CHECKING([for gxx-include-dir])
745 AC_ARG_WITH([gxx-include-dir],
746 AC_HELP_STRING([--with-gxx-include-dir=DIR],
747 [installation directory for include files]),
749 yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;;
750 no) gxx_include_dir=no ;;
751 *) gxx_include_dir=$withval ;;
753 [gxx_include_dir=no])
754 AC_MSG_RESULT($gxx_include_dir)
756 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
757 AC_ARG_ENABLE([version-specific-runtime-libs],
758 AC_HELP_STRING([--enable-version-specific-runtime-libs],
759 [Specify that runtime libraries should be installed in a compiler-specific directory]),
760 [case "$enableval" in
761 yes) version_specific_libs=yes ;;
762 no) version_specific_libs=no ;;
763 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
765 [version_specific_libs=no])
766 AC_MSG_RESULT($version_specific_libs)
768 # Default case for install directory for include files.
769 if test $version_specific_libs = no && test $gxx_include_dir = no; then
770 gxx_include_dir='include/c++/${gcc_version}'
771 if test -n "$with_cross_host" &&
772 test x"$with_cross_host" != x"no"; then
773 gxx_include_dir='${prefix}/${target_alias}/'"$gxx_include_dir"
775 gxx_include_dir='${prefix}/'"$gxx_include_dir"
779 # Version-specific runtime libs processing.
780 if test $version_specific_libs = yes; then
781 # Need the gcc compiler version to know where to install libraries
782 # and header files if --enable-version-specific-runtime-libs option
783 # is selected. FIXME: these variables are misnamed, there are
784 # no executables installed in _toolexecdir or _toolexeclibdir.
785 if test x"$gxx_include_dir" = x"no"; then
786 gxx_include_dir='${libdir}/gcc/${host_alias}/${gcc_version}/include/c++'
788 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
789 glibcxx_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)'
792 # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir
793 # Install a library built with a cross compiler in tooldir, not libdir.
794 if test x"$glibcxx_toolexecdir" = x"no"; then
795 if test -n "$with_cross_host" &&
796 test x"$with_cross_host" != x"no"; then
797 glibcxx_toolexecdir='${exec_prefix}/${host_alias}'
798 glibcxx_toolexeclibdir='${toolexecdir}/lib'
800 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
801 glibcxx_toolexeclibdir='${libdir}'
803 multi_os_directory=`$CXX -print-multi-os-directory`
804 case $multi_os_directory in
805 .) ;; # Avoid trailing /.
806 *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;;
810 AC_MSG_CHECKING([for install location])
811 AC_MSG_RESULT($gxx_include_dir)
813 AC_SUBST(glibcxx_prefixdir)
814 AC_SUBST(gxx_include_dir)
815 AC_SUBST(glibcxx_toolexecdir)
816 AC_SUBST(glibcxx_toolexeclibdir)
822 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING)
823 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c)
824 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER)
826 dnl See docs/html/17_intro/configury.html#enable for documentation.
828 m4_define([GLIBCXX_ENABLE],[dnl
829 m4_define([_g_switch],[--enable-$1])dnl
830 m4_define([_g_help],[AC_HELP_STRING([_g_switch$3],[$4 @<:@default=$2@:>@])])dnl
831 AC_ARG_ENABLE([$1],m4_dquote(_g_help),
836 m4_bpatsubst([$5],[permit ])) ;;
837 *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;;
838 dnl Idea for future: generate a URL pointing to
839 dnl "onlinedocs/configopts.html#whatever"
846 *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;;
850 [enable_]m4_bpatsubst([$1],-,_)[=][$2])
851 m4_undefine([_g_switch])dnl
852 m4_undefine([_g_help])dnl
857 dnl Check for ISO/IEC 9899:1999 "C99" support.
859 dnl --enable-c99 defines _GLIBCXX_USE_C99
860 dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined
861 dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)]
862 dnl Where DEFAULT is either `yes' or `no'.
863 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
865 AC_DEFUN([GLIBCXX_ENABLE_C99], [
866 GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support])
868 if test x"$enable_c99" = x"yes"; then
873 # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
874 # undefined and fake C99 facilities - like pre-standard snprintf - may be
875 # spuriously enabled.
876 # Long term, -std=c++0x could be even better, could manage to explicitely
877 # request C99 facilities to the underlying C headers.
878 ac_save_CXXFLAGS="$CXXFLAGS"
879 CXXFLAGS="$CXXFLAGS -std=c++98"
881 ac_save_gcc_no_link="$gcc_no_link"
883 if test x$gcc_no_link != xyes; then
884 # Use -fno-exceptions to that the C driver can link these tests without
885 # hitting undefined references to personality routines.
886 CXXFLAGS="$CXXFLAGS -fno-exceptions"
887 AC_CHECK_LIB(m, sin, [
890 # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK
895 # Check for the existence of <math.h> functions used if C99 is enabled.
896 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
897 AC_CACHE_VAL(glibcxx_cv_c99_math, [
898 GCC_TRY_COMPILE_OR_LINK(
900 volatile double d1, d2;
908 i = isgreater(d1, d2);
909 i = isgreaterequal(d1, d2);
911 i = islessequal(d1, d2);
912 i = islessgreater(d1, d2);
913 i = islessgreater(d1, d2);
914 i = isunordered(d1, d2);
915 ],[glibcxx_cv_c99_math=yes], [glibcxx_cv_c99_math=no])
917 AC_MSG_RESULT($glibcxx_cv_c99_math)
918 if test x"$glibcxx_cv_c99_math" = x"yes"; then
919 AC_DEFINE(_GLIBCXX_USE_C99_MATH, 1,
920 [Define if C99 functions or macros in <math.h> should be imported
921 in <cmath> in namespace std.])
924 # Check for the existence of <complex.h> complex math functions.
925 # This is necessary even though libstdc++ uses the builtin versions
926 # of these functions, because if the builtin cannot be used, a reference
927 # to the library function is emitted.
928 AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no)
929 AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
930 glibcxx_cv_c99_complex=no;
931 if test x"$ac_has_complex_h" = x"yes"; then
932 AC_MSG_CHECKING([for ISO C99 support in <complex.h>])
933 GCC_TRY_COMPILE_OR_LINK(
934 [#include <complex.h>
935 typedef __complex__ float float_type;
936 typedef __complex__ double double_type;
937 typedef __complex__ long double ld_type;
938 volatile float_type tmpf;
939 volatile double_type tmpd;
940 volatile ld_type tmpld;
943 volatile long double ld;],
955 tmpf = cpowf(tmpf, tmpf);
968 tmpd = cpow(tmpd, tmpd);
972 tmpld = ccosl(tmpld);
973 tmpld = ccoshl(tmpld);
974 tmpld = cexpl(tmpld);
975 tmpld = clogl(tmpld);
976 tmpld = csinl(tmpld);
977 tmpld = csinhl(tmpld);
978 tmpld = csqrtl(tmpld);
979 tmpld = ctanl(tmpld);
980 tmpld = ctanhl(tmpld);
981 tmpld = cpowl(tmpld, tmpld);
982 tmpld = cprojl(tmpld);
983 ],[glibcxx_cv_c99_complex=yes], [glibcxx_cv_c99_complex=no])
985 AC_MSG_RESULT($glibcxx_cv_c99_complex)
986 if test x"$glibcxx_cv_c99_complex" = x"yes"; then
987 AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX, 1,
988 [Define if C99 functions in <complex.h> should be used in
989 <complex>. Using compiler builtins for these functions requires
990 corresponding C99 library functions to be present.])
993 # Check for the existence in <stdio.h> of vscanf, et. al.
994 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
995 AC_CACHE_VAL(glibcxx_cv_c99_stdio, [
996 GCC_TRY_COMPILE_OR_LINK(
999 void foo(char* fmt, ...)
1001 va_list args; va_start(args, fmt);
1002 vfscanf(stderr, "%i", args);
1004 vsnprintf(fmt, 0, "%i", args);
1005 vsscanf(fmt, "%i", args);
1007 [snprintf("12", 0, "%i");],
1008 [glibcxx_cv_c99_stdio=yes], [glibcxx_cv_c99_stdio=no])
1010 AC_MSG_RESULT($glibcxx_cv_c99_stdio)
1012 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
1013 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
1014 AC_CACHE_VAL(glibcxx_cv_c99_stdlib, [
1015 GCC_TRY_COMPILE_OR_LINK(
1016 [#include <stdlib.h>
1018 volatile long double ld;
1019 volatile unsigned long long ll;
1022 f = strtof("gnu", &tmp);
1023 ld = strtold("gnu", &tmp);
1024 ll = strtoll("gnu", &tmp, 10);
1025 ll = strtoull("gnu", &tmp, 10);
1027 mydivt = lldiv(10,1);
1032 ],[glibcxx_cv_c99_stdlib=yes], [glibcxx_cv_c99_stdlib=no])
1034 AC_MSG_RESULT($glibcxx_cv_c99_stdlib)
1036 # Check for the existence in <wchar.h> of wcstold, etc.
1037 glibcxx_cv_c99_wchar=no;
1038 if test x"$ac_has_wchar_h" = xyes &&
1039 test x"$ac_has_wctype_h" = xyes; then
1040 AC_MSG_CHECKING([for ISO C99 support in <wchar.h>])
1041 AC_TRY_COMPILE([#include <wchar.h>
1048 ],[],[glibcxx_cv_c99_wchar=yes], [glibcxx_cv_c99_wchar=no])
1050 # Checks for wide character functions that may not be present.
1051 # Injection of these is wrapped with guard macros.
1052 # NB: only put functions here, instead of immediately above, if
1053 # absolutely necessary.
1054 AC_TRY_COMPILE([#include <wchar.h>
1055 namespace test { using ::vfwscanf; } ], [],
1056 [AC_DEFINE(HAVE_VFWSCANF,1,
1057 [Defined if vfwscanf exists.])],[])
1059 AC_TRY_COMPILE([#include <wchar.h>
1060 namespace test { using ::vswscanf; } ], [],
1061 [AC_DEFINE(HAVE_VSWSCANF,1,
1062 [Defined if vswscanf exists.])],[])
1064 AC_TRY_COMPILE([#include <wchar.h>
1065 namespace test { using ::vwscanf; } ], [],
1066 [AC_DEFINE(HAVE_VWSCANF,1,[Defined if vwscanf exists.])],[])
1068 AC_TRY_COMPILE([#include <wchar.h>
1069 namespace test { using ::wcstof; } ], [],
1070 [AC_DEFINE(HAVE_WCSTOF,1,[Defined if wcstof exists.])],[])
1072 AC_TRY_COMPILE([#include <wctype.h>],
1073 [ wint_t t; int i = iswblank(t);],
1074 [AC_DEFINE(HAVE_ISWBLANK,1,
1075 [Defined if iswblank exists.])],[])
1077 AC_MSG_RESULT($glibcxx_cv_c99_wchar)
1080 # Option parsed, now set things appropriately.
1081 if test x"$glibcxx_cv_c99_math" = x"no" ||
1082 test x"$glibcxx_cv_c99_complex" = x"no" ||
1083 test x"$glibcxx_cv_c99_stdio" = x"no" ||
1084 test x"$glibcxx_cv_c99_stdlib" = x"no" ||
1085 test x"$glibcxx_cv_c99_wchar" = x"no"; then
1088 AC_DEFINE(_GLIBCXX_USE_C99, 1,
1089 [Define if C99 functions or macros from <wchar.h>, <math.h>,
1090 <complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.])
1093 gcc_no_link="$ac_save_gcc_no_link"
1094 LIBS="$ac_save_LIBS"
1095 CXXFLAGS="$ac_save_CXXFLAGS"
1099 AC_MSG_CHECKING([for fully enabled ISO C99 support])
1100 AC_MSG_RESULT($enable_c99)
1105 dnl Check for clock_gettime, nanosleep and sched_yield, used in the
1106 dnl implementation of 20.8.5 [time.clock], and 30.2.2 [thread.thread.this]
1107 dnl in the current C++0x working draft.
1109 dnl --enable-libstdcxx-time
1110 dnl --enable-libstdcxx-time=yes
1111 dnl checks for the availability of monotonic and realtime clocks,
1112 dnl nanosleep and sched_yield in libc and libposix4 and, in case, links
1114 dnl --enable-libstdcxx-time=rt
1115 dnl also searches (and, in case, links) librt. Note that this is
1116 dnl not always desirable because, in glibc, for example, in turn it
1117 dnl triggers the linking of libpthread too, which activates locking,
1118 dnl a large overhead for single-thread programs.
1119 dnl --enable-libstdcxx-time=no
1120 dnl --disable-libstdcxx-time
1121 dnl disables the checks completely
1123 AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [
1125 AC_MSG_CHECKING([for clock_gettime, nanosleep and sched_yield])
1126 GLIBCXX_ENABLE(libstdcxx-time,$1,[[[=KIND]]],
1127 [use KIND for check type],
1132 ac_save_CXXFLAGS="$CXXFLAGS"
1133 CXXFLAGS="$CXXFLAGS -fno-exceptions"
1134 ac_save_LIBS="$LIBS"
1136 ac_has_clock_monotonic=no
1137 ac_has_clock_realtime=no
1138 AC_MSG_RESULT($enable_libstdcxx_time)
1140 if test x"$enable_libstdcxx_time" != x"no"; then
1142 if test x"$enable_libstdcxx_time" = x"rt"; then
1143 AC_SEARCH_LIBS(clock_gettime, [rt posix4])
1144 AC_SEARCH_LIBS(nanosleep, [rt posix4])
1146 AC_SEARCH_LIBS(clock_gettime, [posix4])
1147 AC_SEARCH_LIBS(nanosleep, [posix4])
1150 case "$ac_cv_search_clock_gettime" in
1151 -l*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime
1154 case "$ac_cv_search_nanosleep" in
1155 -l*) GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_nanosleep"
1159 AC_SEARCH_LIBS(sched_yield, [rt posix4])
1161 case "$ac_cv_search_sched_yield" in
1163 GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
1164 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
1165 [ Defined if sched_yield is available. ])
1168 if test x"$enable_libstdcxx_time" = x"rt"; then
1169 GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
1170 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
1171 [ Defined if sched_yield is available. ])
1175 AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
1176 [ Defined if sched_yield is available. ])
1180 AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no)
1182 if test x"$ac_has_unistd_h" = x"yes"; then
1183 AC_MSG_CHECKING([for monotonic clock])
1185 [#include <unistd.h>
1188 [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
1191 clock_gettime(CLOCK_MONOTONIC, &tp);
1192 ], [ac_has_clock_monotonic=yes], [ac_has_clock_monotonic=no])
1194 AC_MSG_RESULT($ac_has_clock_monotonic)
1196 AC_MSG_CHECKING([for realtime clock])
1198 [#include <unistd.h>
1201 [#if _POSIX_TIMERS > 0
1204 clock_gettime(CLOCK_REALTIME, &tp);
1205 ], [ac_has_clock_realtime=yes], [ac_has_clock_realtime=no])
1207 AC_MSG_RESULT($ac_has_clock_realtime)
1209 AC_MSG_CHECKING([for nanosleep])
1211 [#include <unistd.h>
1214 [#if _POSIX_TIMERS > 0
1218 ], [ac_has_nanosleep=yes], [ac_has_nanosleep=no])
1220 AC_MSG_RESULT($ac_has_nanosleep)
1224 if test x"$ac_has_clock_monotonic" = x"yes"; then
1225 AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1,
1226 [ Defined if clock_gettime has monotonic clock support. ])
1229 if test x"$ac_has_clock_realtime" = x"yes"; then
1230 AC_DEFINE(_GLIBCXX_USE_CLOCK_REALTIME, 1,
1231 [ Defined if clock_gettime has realtime clock support. ])
1234 if test x"$ac_has_nanosleep" = x"yes"; then
1235 AC_DEFINE(_GLIBCXX_USE_NANOSLEEP, 1,
1236 [ Defined if nanosleep is available. ])
1239 AC_SUBST(GLIBCXX_LIBS)
1241 CXXFLAGS="$ac_save_CXXFLAGS"
1242 LIBS="$ac_save_LIBS"
1247 dnl Check for gettimeofday, used in the implementation of 20.8.5
1248 dnl [time.clock] in the current C++0x working draft.
1250 AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [
1252 AC_MSG_CHECKING([for gettimeofday])
1256 ac_save_CXXFLAGS="$CXXFLAGS"
1257 CXXFLAGS="$CXXFLAGS -fno-exceptions"
1259 ac_has_gettimeofday=no;
1260 AC_CHECK_HEADERS(sys/time.h, ac_has_sys_time_h=yes, ac_has_sys_time_h=no)
1261 if test x"$ac_has_sys_time_h" = x"yes"; then
1262 AC_MSG_CHECKING([for gettimeofday])
1263 GCC_TRY_COMPILE_OR_LINK([#include <sys/time.h>],
1264 [timeval tv; gettimeofday(&tv, 0);],
1265 [ac_has_gettimeofday=yes], [ac_has_gettimeofday=no])
1267 AC_MSG_RESULT($ac_has_gettimeofday)
1270 if test x"$ac_has_gettimeofday" = x"yes"; then
1271 AC_DEFINE(_GLIBCXX_USE_GETTIMEOFDAY, 1,
1272 [ Defined if gettimeofday is available. ])
1275 CXXFLAGS="$ac_save_CXXFLAGS"
1280 dnl Check for ISO/IEC 9899:1999 "C99" support to ISO/IEC DTR 19768 "TR1"
1281 dnl facilities in Chapter 8, "C compatibility".
1283 AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [
1288 # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
1289 # undefined and fake C99 facilities may be spuriously enabled.
1290 ac_save_CXXFLAGS="$CXXFLAGS"
1291 CXXFLAGS="$CXXFLAGS -std=c++98"
1293 # Check for the existence of <complex.h> complex math functions used
1295 AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no)
1296 ac_c99_complex_tr1=no;
1297 if test x"$ac_has_complex_h" = x"yes"; then
1298 AC_MSG_CHECKING([for ISO C99 support to TR1 in <complex.h>])
1299 AC_TRY_COMPILE([#include <complex.h>],
1300 [typedef __complex__ float float_type; float_type tmpf;
1307 typedef __complex__ double double_type; double_type tmpd;
1314 typedef __complex__ long double ld_type; ld_type tmpld;
1321 ],[ac_c99_complex_tr1=yes], [ac_c99_complex_tr1=no])
1323 AC_MSG_RESULT($ac_c99_complex_tr1)
1324 if test x"$ac_c99_complex_tr1" = x"yes"; then
1325 AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX_TR1, 1,
1326 [Define if C99 functions in <complex.h> should be used in
1327 <tr1/complex>. Using compiler builtins for these functions
1328 requires corresponding C99 library functions to be present.])
1331 # Check for the existence of <ctype.h> functions.
1332 AC_MSG_CHECKING([for ISO C99 support to TR1 in <ctype.h>])
1333 AC_CACHE_VAL(glibcxx_cv_c99_ctype_tr1, [
1334 AC_TRY_COMPILE([#include <ctype.h>],
1338 ],[glibcxx_cv_c99_ctype_tr1=yes],
1339 [glibcxx_cv_c99_ctype_tr1=no])
1341 AC_MSG_RESULT($glibcxx_cv_c99_ctype_tr1)
1342 if test x"$glibcxx_cv_c99_ctype_tr1" = x"yes"; then
1343 AC_DEFINE(_GLIBCXX_USE_C99_CTYPE_TR1, 1,
1344 [Define if C99 functions in <ctype.h> should be imported in
1345 <tr1/cctype> in namespace std::tr1.])
1348 # Check for the existence of <fenv.h> functions.
1349 AC_CHECK_HEADERS(fenv.h, ac_has_fenv_h=yes, ac_has_fenv_h=no)
1351 if test x"$ac_has_fenv_h" = x"yes"; then
1352 AC_MSG_CHECKING([for ISO C99 support to TR1 in <fenv.h>])
1353 AC_TRY_COMPILE([#include <fenv.h>],
1358 ret = feclearexcept(except);
1359 ret = fegetexceptflag(pflag, except);
1360 ret = feraiseexcept(except);
1361 ret = fesetexceptflag(pflag, except);
1362 ret = fetestexcept(except);
1364 ret = fesetround(mode);
1365 ret = fegetenv(penv);
1366 ret = feholdexcept(penv);
1367 ret = fesetenv(penv);
1368 ret = feupdateenv(penv);
1369 ],[ac_c99_fenv_tr1=yes], [ac_c99_fenv_tr1=no])
1371 AC_MSG_RESULT($ac_c99_fenv_tr1)
1372 if test x"$ac_c99_fenv_tr1" = x"yes"; then
1373 AC_DEFINE(_GLIBCXX_USE_C99_FENV_TR1, 1,
1374 [Define if C99 functions in <fenv.h> should be imported in
1375 <tr1/cfenv> in namespace std::tr1.])
1378 # Check for the existence of <stdint.h> types.
1379 AC_MSG_CHECKING([for ISO C99 support to TR1 in <stdint.h>])
1380 AC_CACHE_VAL(glibcxx_cv_c99_stdint_tr1, [
1381 AC_TRY_COMPILE([#define __STDC_LIMIT_MACROS
1382 #define __STDC_CONSTANT_MACROS
1383 #include <stdint.h>],
1384 [typedef int8_t my_int8_t;
1385 my_int8_t i8 = INT8_MIN;
1387 typedef int16_t my_int16_t;
1388 my_int16_t i16 = INT16_MIN;
1390 typedef int32_t my_int32_t;
1391 my_int32_t i32 = INT32_MIN;
1393 typedef int64_t my_int64_t;
1394 my_int64_t i64 = INT64_MIN;
1396 typedef int_fast8_t my_int_fast8_t;
1397 my_int_fast8_t if8 = INT_FAST8_MIN;
1398 if8 = INT_FAST8_MAX;
1399 typedef int_fast16_t my_int_fast16_t;
1400 my_int_fast16_t if16 = INT_FAST16_MIN;
1401 if16 = INT_FAST16_MAX;
1402 typedef int_fast32_t my_int_fast32_t;
1403 my_int_fast32_t if32 = INT_FAST32_MIN;
1404 if32 = INT_FAST32_MAX;
1405 typedef int_fast64_t my_int_fast64_t;
1406 my_int_fast64_t if64 = INT_FAST64_MIN;
1407 if64 = INT_FAST64_MAX;
1408 typedef int_least8_t my_int_least8_t;
1409 my_int_least8_t il8 = INT_LEAST8_MIN;
1410 il8 = INT_LEAST8_MAX;
1411 typedef int_least16_t my_int_least16_t;
1412 my_int_least16_t il16 = INT_LEAST16_MIN;
1413 il16 = INT_LEAST16_MAX;
1414 typedef int_least32_t my_int_least32_t;
1415 my_int_least32_t il32 = INT_LEAST32_MIN;
1416 il32 = INT_LEAST32_MAX;
1417 typedef int_least64_t my_int_least64_t;
1418 my_int_least64_t il64 = INT_LEAST64_MIN;
1419 il64 = INT_LEAST64_MAX;
1420 typedef intmax_t my_intmax_t;
1421 my_intmax_t im = INTMAX_MAX;
1423 typedef intptr_t my_intptr_t;
1424 my_intptr_t ip = INTPTR_MAX;
1426 typedef uint8_t my_uint8_t;
1427 my_uint8_t ui8 = UINT8_MAX;
1429 typedef uint16_t my_uint16_t;
1430 my_uint16_t ui16 = UINT16_MAX;
1432 typedef uint32_t my_uint32_t;
1433 my_uint32_t ui32 = UINT32_MAX;
1435 typedef uint64_t my_uint64_t;
1436 my_uint64_t ui64 = UINT64_MAX;
1438 typedef uint_fast8_t my_uint_fast8_t;
1439 my_uint_fast8_t uif8 = UINT_FAST8_MAX;
1440 uif8 = UINT_FAST8_MAX;
1441 typedef uint_fast16_t my_uint_fast16_t;
1442 my_uint_fast16_t uif16 = UINT_FAST16_MAX;
1443 uif16 = UINT_FAST16_MAX;
1444 typedef uint_fast32_t my_uint_fast32_t;
1445 my_uint_fast32_t uif32 = UINT_FAST32_MAX;
1446 uif32 = UINT_FAST32_MAX;
1447 typedef uint_fast64_t my_uint_fast64_t;
1448 my_uint_fast64_t uif64 = UINT_FAST64_MAX;
1449 uif64 = UINT_FAST64_MAX;
1450 typedef uint_least8_t my_uint_least8_t;
1451 my_uint_least8_t uil8 = UINT_LEAST8_MAX;
1452 uil8 = UINT_LEAST8_MAX;
1453 typedef uint_least16_t my_uint_least16_t;
1454 my_uint_least16_t uil16 = UINT_LEAST16_MAX;
1455 uil16 = UINT_LEAST16_MAX;
1456 typedef uint_least32_t my_uint_least32_t;
1457 my_uint_least32_t uil32 = UINT_LEAST32_MAX;
1458 uil32 = UINT_LEAST32_MAX;
1459 typedef uint_least64_t my_uint_least64_t;
1460 my_uint_least64_t uil64 = UINT_LEAST64_MAX;
1461 uil64 = UINT_LEAST64_MAX;
1462 typedef uintmax_t my_uintmax_t;
1463 my_uintmax_t uim = UINTMAX_MAX;
1465 typedef uintptr_t my_uintptr_t;
1466 my_uintptr_t uip = UINTPTR_MAX;
1468 ],[glibcxx_cv_c99_stdint_tr1=yes],
1469 [glibcxx_cv_c99_stdint_tr1=no])
1471 AC_MSG_RESULT($glibcxx_cv_c99_stdint_tr1)
1472 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
1473 AC_DEFINE(_GLIBCXX_USE_C99_STDINT_TR1, 1,
1474 [Define if C99 types in <stdint.h> should be imported in
1475 <tr1/cstdint> in namespace std::tr1.])
1478 # Check for the existence of <math.h> functions.
1479 AC_MSG_CHECKING([for ISO C99 support to TR1 in <math.h>])
1480 AC_CACHE_VAL(glibcxx_cv_c99_math_tr1, [
1481 AC_TRY_COMPILE([#include <math.h>],
1482 [typedef double_t my_double_t;
1483 typedef float_t my_float_t;
1497 copysignf(0.0f, 0.0f);
1498 copysignl(0.0l, 0.0l);
1515 fmaf(0.0f, 0.0f, 0.0f);
1516 fmal(0.0l, 0.0l, 0.0l);
1559 nextafter(0.0, 0.0);
1560 nextafterf(0.0f, 0.0f);
1561 nextafterl(0.0l, 0.0l);
1562 nexttoward(0.0, 0.0);
1563 nexttowardf(0.0f, 0.0f);
1564 nexttowardl(0.0l, 0.0l);
1565 remainder(0.0, 0.0);
1566 remainderf(0.0f, 0.0f);
1567 remainderl(0.0l, 0.0l);
1568 remquo(0.0, 0.0, 0);
1569 remquof(0.0f, 0.0f, 0);
1570 remquol(0.0l, 0.0l, 0);
1589 ],[glibcxx_cv_c99_math_tr1=yes], [glibcxx_cv_c99_math_tr1=no])
1591 AC_MSG_RESULT($glibcxx_cv_c99_math_tr1)
1592 if test x"$glibcxx_cv_c99_math_tr1" = x"yes"; then
1593 AC_DEFINE(_GLIBCXX_USE_C99_MATH_TR1, 1,
1594 [Define if C99 functions or macros in <math.h> should be imported
1595 in <tr1/cmath> in namespace std::tr1.])
1598 # Check for the existence of <inttypes.h> functions (NB: doesn't make
1599 # sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1).
1600 ac_c99_inttypes_tr1=no;
1601 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
1602 AC_MSG_CHECKING([for ISO C99 support to TR1 in <inttypes.h>])
1603 AC_TRY_COMPILE([#include <inttypes.h>],
1604 [intmax_t i, numer, denom, base;
1607 intmax_t ret = imaxabs(i);
1608 imaxdiv_t dret = imaxdiv(numer, denom);
1609 ret = strtoimax(s, endptr, base);
1610 uintmax_t uret = strtoumax(s, endptr, base);
1611 ],[ac_c99_inttypes_tr1=yes], [ac_c99_inttypes_tr1=no])
1613 AC_MSG_RESULT($ac_c99_inttypes_tr1)
1614 if test x"$ac_c99_inttypes_tr1" = x"yes"; then
1615 AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_TR1, 1,
1616 [Define if C99 functions in <inttypes.h> should be imported in
1617 <tr1/cinttypes> in namespace std::tr1.])
1620 # Check for the existence of whcar_t <inttypes.h> functions (NB: doesn't
1621 # make sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1).
1622 ac_c99_inttypes_wchar_t_tr1=no;
1623 if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then
1624 AC_MSG_CHECKING([for wchar_t ISO C99 support to TR1 in <inttypes.h>])
1625 AC_TRY_COMPILE([#include <inttypes.h>],
1629 intmax_t ret = wcstoimax(s, endptr, base);
1630 uintmax_t uret = wcstoumax(s, endptr, base);
1631 ],[ac_c99_inttypes_wchar_t_tr1=yes],
1632 [ac_c99_inttypes_wchar_t_tr1=no])
1634 AC_MSG_RESULT($ac_c99_inttypes_wchar_t_tr1)
1635 if test x"$ac_c99_inttypes_wchar_t_tr1" = x"yes"; then
1636 AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1, 1,
1637 [Define if wchar_t C99 functions in <inttypes.h> should be
1638 imported in <tr1/cinttypes> in namespace std::tr1.])
1641 # Check for the existence of the <stdbool.h> header.
1642 AC_CHECK_HEADERS(stdbool.h)
1644 # Check for the existence of the <stdalign.h> header.
1645 AC_CHECK_HEADERS(stdalign.h)
1647 CXXFLAGS="$ac_save_CXXFLAGS"
1652 dnl Check whether "/dev/random" and "/dev/urandom" are available for the
1653 dnl random_device of "TR1" (Chapter 5.1, "Random number generation").
1655 AC_DEFUN([GLIBCXX_CHECK_RANDOM_TR1], [
1657 AC_MSG_CHECKING([for "/dev/random" and "/dev/urandom" for TR1 random_device])
1658 AC_CACHE_VAL(glibcxx_cv_random_tr1, [
1659 if test -r /dev/random && test -r /dev/urandom; then
1660 glibcxx_cv_random_tr1=yes;
1662 glibcxx_cv_random_tr1=no;
1665 AC_MSG_RESULT($glibcxx_cv_random_tr1)
1667 if test x"$glibcxx_cv_random_tr1" = x"yes"; then
1668 AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1,
1669 [Define if /dev/random and /dev/urandom are available for
1670 the random_device of TR1 (Chapter 5.1).])
1676 dnl Compute the EOF, SEEK_CUR, and SEEK_END integer constants.
1678 AC_DEFUN([GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS], [
1680 AC_CACHE_CHECK([for the value of EOF], glibcxx_cv_stdio_eof, [
1681 AC_COMPUTE_INT([glibcxx_cv_stdio_eof], [[EOF]],
1682 [#include <stdio.h>],
1683 [AC_MSG_ERROR([computing EOF failed])])
1685 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_EOF, $glibcxx_cv_stdio_eof,
1686 [Define to the value of the EOF integer constant.])
1688 AC_CACHE_CHECK([for the value of SEEK_CUR], glibcxx_cv_stdio_seek_cur, [
1689 AC_COMPUTE_INT([glibcxx_cv_stdio_seek_cur], [[SEEK_CUR]],
1690 [#include <stdio.h>],
1691 [AC_MSG_ERROR([computing SEEK_CUR failed])])
1693 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_CUR, $glibcxx_cv_stdio_seek_cur,
1694 [Define to the value of the SEEK_CUR integer constant.])
1696 AC_CACHE_CHECK([for the value of SEEK_END], glibcxx_cv_stdio_seek_end, [
1697 AC_COMPUTE_INT([glibcxx_cv_stdio_seek_end], [[SEEK_END]],
1698 [#include <stdio.h>],
1699 [AC_MSG_ERROR([computing SEEK_END failed])])
1701 AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_END, $glibcxx_cv_stdio_seek_end,
1702 [Define to the value of the SEEK_END integer constant.])
1706 dnl Check whether required C++ overloads are present in <math.h>.
1709 AC_DEFUN([GLIBCXX_CHECK_MATH_PROTO], [
1716 # Solaris 8 FCS only had an overload for double std::abs(double) in
1717 # <iso/math_iso.h>. Patches 111721-04 (SPARC) and 112757-01 (x86)
1718 # introduced the full set also found from Solaris 9 onwards.
1719 AC_MSG_CHECKING([for float std::abs(float) overload])
1720 AC_CACHE_VAL(glibcxx_cv_abs_float, [
1721 AC_COMPILE_IFELSE([AC_LANG_SOURCE(
1724 inline float abs(float __x)
1725 { return __builtin_fabsf(__x); }
1728 [glibcxx_cv_abs_float=no],
1729 [glibcxx_cv_abs_float=yes]
1732 # autoheader cannot handle indented templates.
1733 AH_VERBATIM([__CORRECT_ISO_CPP_MATH_H_PROTO1],
1734 [/* Define if all C++ overloads are available in <math.h>. */
1735 #if __cplusplus >= 199711L
1736 #undef __CORRECT_ISO_CPP_MATH_H_PROTO1
1738 AH_VERBATIM([__CORRECT_ISO_CPP_MATH_H_PROTO2],
1739 [/* Define if only double std::abs(double) is available in <math.h>. */
1740 #if __cplusplus >= 199711L
1741 #undef __CORRECT_ISO_CPP_MATH_H_PROTO2
1744 if test $glibcxx_cv_abs_float = yes; then
1745 AC_DEFINE(__CORRECT_ISO_CPP_MATH_H_PROTO1)
1747 AC_DEFINE(__CORRECT_ISO_CPP_MATH_H_PROTO2)
1749 AC_MSG_RESULT($glibcxx_cv_abs_float)
1757 dnl Check whether required C++ overloads are present in <stdlib.h>.
1760 AC_DEFUN([GLIBCXX_CHECK_STDLIB_PROTO], [
1767 # Solaris 8 FCS lacked the overloads for long std::abs(long) and
1768 # ldiv_t std::div(long, long) in <iso/stdlib_iso.h>. Patches 109607-02
1769 # (SPARC) and 109608-02 (x86) introduced them.
1770 AC_MSG_CHECKING([for long std::abs(long) overload])
1771 AC_CACHE_VAL(glibcxx_cv_abs_long, [
1772 AC_COMPILE_IFELSE([AC_LANG_SOURCE(
1773 [#include <stdlib.h>
1776 abs(long __i) { return labs(__i); }
1779 [glibcxx_cv_abs_long=no],
1780 [glibcxx_cv_abs_long=yes]
1783 # autoheader cannot handle indented templates.
1784 AH_VERBATIM([__CORRECT_ISO_CPP_STDLIB_H_PROTO],
1785 [/* Define if all C++ overloads are available in <stdlib.h>. */
1786 #if __cplusplus >= 199711L
1787 #undef __CORRECT_ISO_CPP_STDLIB_H_PROTO
1789 if test $glibcxx_cv_abs_long = yes; then
1790 AC_DEFINE(__CORRECT_ISO_CPP_STDLIB_H_PROTO, 1)
1792 AC_MSG_RESULT($glibcxx_cv_abs_long)
1800 dnl Check whether macros, etc are present for <system_error>
1802 AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [
1804 m4_pushdef([n_syserr], [1])dnl
1805 m4_foreach([syserr], [EOWNERDEAD, ENOTRECOVERABLE, ENOLINK, EPROTO, ENODATA,
1806 ENOSR, ENOSTR, ETIME, EBADMSG, ECANCELED,
1807 EOVERFLOW, ENOTSUP, EIDRM, ETXTBSY,
1808 ECHILD, ENOSPC, EPERM,
1809 ETIMEDOUT, EWOULDBLOCK],
1810 [m4_pushdef([SYSERR], m4_toupper(syserr))dnl
1811 AC_MSG_CHECKING([for syserr])
1812 AC_CACHE_VAL([glibcxx_cv_system_error[]n_syserr], [
1813 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <errno.h>]],
1814 [int i = syserr;])],
1815 [glibcxx_cv_system_error[]n_syserr=yes],
1816 [glibcxx_cv_system_error[]n_syserr=no])
1818 AC_MSG_RESULT([$glibcxx_cv_system_error[]n_syserr])
1819 if test x"$glibcxx_cv_system_error[]n_syserr" = x"yes"; then
1820 AC_DEFINE([HAVE_]SYSERR, 1, [Define if ]syserr[ exists.])
1822 m4_define([n_syserr], m4_incr(n_syserr))dnl
1823 m4_popdef([SYSERR])dnl
1825 m4_popdef([n_syserr])dnl
1829 dnl Check for what type of C headers to use.
1831 dnl --enable-cheaders= [does stuff].
1832 dnl --disable-cheaders [does not do anything, really].
1833 dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)]
1834 dnl Where DEFAULT is either 'c' or 'c_std' or 'c_global'.
1836 AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [
1837 GLIBCXX_ENABLE(cheaders,$1,[[[=KIND]]],
1838 [construct "C" headers for g++], [permit c|c_std|c_global])
1839 AC_MSG_NOTICE("C" header strategy set to $enable_cheaders)
1841 C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders
1843 # Allow overrides to configure.host here.
1844 if test $enable_cheaders = c_global; then
1848 AC_SUBST(C_INCLUDE_DIR)
1849 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c)
1850 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std)
1851 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_GLOBAL, test $enable_cheaders = c_global)
1852 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes)
1857 dnl Check for which locale library to use. The choice is mapped to
1858 dnl a subdirectory of config/locale.
1860 dnl Default is generic.
1862 AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [
1863 GLIBCXX_ENABLE(clocale,auto,[[[=MODEL]]],
1864 [use MODEL for target locale package],
1865 [permit generic|gnu|ieee_1003.1-2001|newlib|yes|no|auto])
1867 # Deal with gettext issues. Default to not using it (=no) until we detect
1868 # support for it later. Let the user turn it off via --e/d, but let that
1869 # default to on for easier handling.
1872 AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]),
1876 # Either a known package, or "auto"
1877 if test $enable_clocale = no || test $enable_clocale = yes; then
1880 enable_clocale_flag=$enable_clocale
1882 # Probe for locale model to use if none specified.
1883 # Default to "generic".
1884 if test $enable_clocale_flag = auto; then
1885 case ${target_os} in
1886 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
1887 enable_clocale_flag=gnu
1890 enable_clocale_flag=darwin
1893 if test x"$with_newlib" = x"yes"; then
1894 enable_clocale_flag=newlib
1896 enable_clocale_flag=generic
1902 # Sanity check model, and test for special functionality.
1903 if test $enable_clocale_flag = gnu; then
1904 AC_EGREP_CPP([_GLIBCXX_ok], [
1905 #include <features.h>
1906 #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(__UCLIBC__)
1909 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1911 # Set it to scream when it hurts.
1912 ac_save_CFLAGS="$CFLAGS"
1913 CFLAGS="-Wimplicit-function-declaration -Werror"
1915 # Use strxfrm_l if available.
1916 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1918 #include <locale.h>],
1919 [char s[128]; __locale_t loc; strxfrm_l(s, "C", 5, loc);],
1920 AC_DEFINE(HAVE_STRXFRM_L, 1,
1921 [Define if strxfrm_l is available in <string.h>.]),)
1923 # Use strerror_l if available.
1924 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1926 #include <locale.h>],
1927 [__locale_t loc; strerror_l(5, loc);],
1928 AC_DEFINE(HAVE_STRERROR_L, 1,
1929 [Define if strerror_l is available in <string.h>.]),)
1931 CFLAGS="$ac_save_CFLAGS"
1934 # Perhaps use strerror_r if available, and strerror_l isn't.
1935 ac_save_CFLAGS="$CFLAGS"
1936 CFLAGS="-Wimplicit-function-declaration -Werror"
1937 AC_TRY_COMPILE([#define _GNU_SOURCE 1
1939 #include <locale.h>],
1940 [char s[128]; strerror_r(5, s, 128);],
1941 AC_DEFINE(HAVE_STRERROR_R, 1,
1942 [Define if strerror_r is available in <string.h>.]),)
1943 CFLAGS="$ac_save_CFLAGS"
1945 # Set configure bits for specified locale package
1946 AC_MSG_CHECKING([for C locale to use])
1947 case ${enable_clocale_flag} in
1949 AC_MSG_RESULT(generic)
1951 CLOCALE_H=config/locale/generic/c_locale.h
1952 CLOCALE_CC=config/locale/generic/c_locale.cc
1953 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1954 CCOLLATE_CC=config/locale/generic/collate_members.cc
1955 CCTYPE_CC=config/locale/generic/ctype_members.cc
1956 CMESSAGES_H=config/locale/generic/messages_members.h
1957 CMESSAGES_CC=config/locale/generic/messages_members.cc
1958 CMONEY_CC=config/locale/generic/monetary_members.cc
1959 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1960 CTIME_H=config/locale/generic/time_members.h
1961 CTIME_CC=config/locale/generic/time_members.cc
1962 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1965 AC_MSG_RESULT(darwin or freebsd)
1967 CLOCALE_H=config/locale/generic/c_locale.h
1968 CLOCALE_CC=config/locale/generic/c_locale.cc
1969 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1970 CCOLLATE_CC=config/locale/generic/collate_members.cc
1971 CCTYPE_CC=config/locale/darwin/ctype_members.cc
1972 CMESSAGES_H=config/locale/generic/messages_members.h
1973 CMESSAGES_CC=config/locale/generic/messages_members.cc
1974 CMONEY_CC=config/locale/generic/monetary_members.cc
1975 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1976 CTIME_H=config/locale/generic/time_members.h
1977 CTIME_CC=config/locale/generic/time_members.cc
1978 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1984 # Declare intention to use gettext, and add support for specific
1986 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1989 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1990 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1991 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1994 # Export the build objects.
1995 for ling in $ALL_LINGUAS; do \
1996 glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \
1997 glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \
1999 AC_SUBST(glibcxx_MOFILES)
2000 AC_SUBST(glibcxx_POFILES)
2002 CLOCALE_H=config/locale/gnu/c_locale.h
2003 CLOCALE_CC=config/locale/gnu/c_locale.cc
2004 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
2005 CCOLLATE_CC=config/locale/gnu/collate_members.cc
2006 CCTYPE_CC=config/locale/gnu/ctype_members.cc
2007 CMESSAGES_H=config/locale/gnu/messages_members.h
2008 CMESSAGES_CC=config/locale/gnu/messages_members.cc
2009 CMONEY_CC=config/locale/gnu/monetary_members.cc
2010 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
2011 CTIME_H=config/locale/gnu/time_members.h
2012 CTIME_CC=config/locale/gnu/time_members.cc
2013 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
2016 AC_MSG_RESULT(IEEE 1003.1)
2018 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
2019 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
2020 CCODECVT_CC=config/locale/generic/codecvt_members.cc
2021 CCOLLATE_CC=config/locale/generic/collate_members.cc
2022 CCTYPE_CC=config/locale/generic/ctype_members.cc
2023 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
2024 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
2025 CMONEY_CC=config/locale/generic/monetary_members.cc
2026 CNUMERIC_CC=config/locale/generic/numeric_members.cc
2027 CTIME_H=config/locale/generic/time_members.h
2028 CTIME_CC=config/locale/generic/time_members.cc
2029 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
2032 AC_MSG_RESULT(newlib)
2034 CLOCALE_H=config/locale/generic/c_locale.h
2035 CLOCALE_CC=config/locale/generic/c_locale.cc
2036 CCODECVT_CC=config/locale/generic/codecvt_members.cc
2037 CCOLLATE_CC=config/locale/generic/collate_members.cc
2038 CCTYPE_CC=config/locale/newlib/ctype_members.cc
2039 CMESSAGES_H=config/locale/generic/messages_members.h
2040 CMESSAGES_CC=config/locale/generic/messages_members.cc
2041 CMONEY_CC=config/locale/generic/monetary_members.cc
2042 CNUMERIC_CC=config/locale/generic/numeric_members.cc
2043 CTIME_H=config/locale/generic/time_members.h
2044 CTIME_CC=config/locale/generic/time_members.cc
2045 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
2049 # This is where the testsuite looks for locale catalogs, using the
2050 # -DLOCALEDIR define during testsuite compilation.
2051 glibcxx_localedir=${glibcxx_builddir}/po/share/locale
2052 AC_SUBST(glibcxx_localedir)
2054 # A standalone libintl (e.g., GNU libintl) may be in use.
2055 if test $USE_NLS = yes; then
2056 AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no)
2057 AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no)
2059 if test $USE_NLS = yes; then
2060 AC_DEFINE(_GLIBCXX_USE_NLS, 1,
2061 [Define if NLS translations are to be used.])
2066 AC_SUBST(CMESSAGES_H)
2067 AC_SUBST(CCODECVT_CC)
2068 AC_SUBST(CCOLLATE_CC)
2070 AC_SUBST(CMESSAGES_CC)
2072 AC_SUBST(CNUMERIC_CC)
2075 AC_SUBST(CLOCALE_CC)
2076 AC_SUBST(CLOCALE_INTERNAL_H)
2081 dnl Check for which std::allocator base class to use. The choice is
2082 dnl mapped from a subdirectory of include/ext.
2086 AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [
2087 AC_MSG_CHECKING([for std::allocator base class])
2088 GLIBCXX_ENABLE(libstdcxx-allocator,auto,[[[=KIND]]],
2089 [use KIND for target std::allocator base],
2090 [permit new|malloc|mt|bitmap|pool|yes|no|auto])
2092 # If they didn't use this option switch, or if they specified --enable
2093 # with no specific model, we'll have to look for one. If they
2094 # specified --disable (???), do likewise.
2095 if test $enable_libstdcxx_allocator = no ||
2096 test $enable_libstdcxx_allocator = yes;
2098 enable_libstdcxx_allocator=auto
2101 # Either a known package, or "auto". Auto implies the default choice
2102 # for a particular platform.
2103 enable_libstdcxx_allocator_flag=$enable_libstdcxx_allocator
2105 # Probe for host-specific support if no specific model is specified.
2107 if test $enable_libstdcxx_allocator_flag = auto; then
2108 case ${target_os} in
2109 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
2110 enable_libstdcxx_allocator_flag=new
2113 enable_libstdcxx_allocator_flag=new
2117 AC_MSG_RESULT($enable_libstdcxx_allocator_flag)
2120 # Set configure bits for specified locale package
2121 case ${enable_libstdcxx_allocator_flag} in
2123 ALLOCATOR_H=config/allocator/bitmap_allocator_base.h
2124 ALLOCATOR_NAME=__gnu_cxx::bitmap_allocator
2127 ALLOCATOR_H=config/allocator/malloc_allocator_base.h
2128 ALLOCATOR_NAME=__gnu_cxx::malloc_allocator
2131 ALLOCATOR_H=config/allocator/mt_allocator_base.h
2132 ALLOCATOR_NAME=__gnu_cxx::__mt_alloc
2135 ALLOCATOR_H=config/allocator/new_allocator_base.h
2136 ALLOCATOR_NAME=__gnu_cxx::new_allocator
2139 ALLOCATOR_H=config/allocator/pool_allocator_base.h
2140 ALLOCATOR_NAME=__gnu_cxx::__pool_alloc
2144 AC_SUBST(ALLOCATOR_H)
2145 AC_SUBST(ALLOCATOR_NAME)
2150 dnl Check for whether the Boost-derived checks should be turned on.
2152 dnl --enable-concept-checks turns them on.
2153 dnl --disable-concept-checks leaves them off.
2154 dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
2155 dnl Where DEFAULT is either `yes' or `no'.
2157 AC_DEFUN([GLIBCXX_ENABLE_CONCEPT_CHECKS], [
2158 GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks])
2159 if test $enable_concept_checks = yes; then
2160 AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS, 1,
2161 [Define to use concept checking code from the boost libraries.])
2166 dnl Use extern templates.
2168 dnl --enable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 1
2169 dnl --disable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 0
2171 dnl + Usage: GLIBCXX_ENABLE_TEMPLATE[(DEFAULT)]
2172 dnl Where DEFAULT is `yes' or `no'.
2174 AC_DEFUN([GLIBCXX_ENABLE_EXTERN_TEMPLATE], [
2176 GLIBCXX_ENABLE(extern-template,$1,,[enable extern template])
2178 AC_MSG_CHECKING([for extern template support])
2179 AC_MSG_RESULT([$enable_extern_template])
2181 GLIBCXX_CONDITIONAL(ENABLE_EXTERN_TEMPLATE, test $enable_extern_template = yes)
2185 dnl Check for parallel mode pre-requisites, including OpenMP support.
2187 dnl + Usage: GLIBCXX_ENABLE_PARALLEL
2189 AC_DEFUN([GLIBCXX_ENABLE_PARALLEL], [
2193 # See if configured libgomp/omp.h exists. (libgomp may be in
2194 # noconfigdirs but not explicitly disabled.)
2195 if echo " ${TARGET_CONFIGDIRS} " | grep " libgomp " > /dev/null 2>&1 ; then
2196 enable_parallel=yes;
2198 AC_MSG_NOTICE([target-libgomp not built])
2201 AC_MSG_CHECKING([for parallel mode support])
2202 AC_MSG_RESULT([$enable_parallel])
2203 GLIBCXX_CONDITIONAL(ENABLE_PARALLEL, test $enable_parallel = yes)
2208 dnl Check for which I/O library to use: stdio, or something specific.
2210 dnl Default is stdio.
2212 AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [
2213 AC_MSG_CHECKING([for underlying I/O to use])
2214 GLIBCXX_ENABLE(cstdio,stdio,[[[=PACKAGE]]],
2215 [use target-specific I/O package], [permit stdio])
2217 # Now that libio has been removed, you can have any color you want as long
2218 # as it's black. This is one big no-op until other packages are added, but
2219 # showing the framework never hurts.
2220 case ${enable_cstdio} in
2222 CSTDIO_H=config/io/c_io_stdio.h
2223 BASIC_FILE_H=config/io/basic_file_stdio.h
2224 BASIC_FILE_CC=config/io/basic_file_stdio.cc
2225 AC_MSG_RESULT(stdio)
2230 AC_SUBST(BASIC_FILE_H)
2231 AC_SUBST(BASIC_FILE_CC)
2236 dnl Check for "unusual" flags to pass to the compiler while building.
2238 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
2239 dnl experimental flags such as -fpch, -fIMI, -Dfloat=char, etc.
2240 dnl --disable-cxx-flags passes nothing.
2241 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
2242 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
2243 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
2244 dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags)
2245 dnl If "default flags" is an empty string, the effect is the same
2246 dnl as --disable or --enable=no.
2248 AC_DEFUN([GLIBCXX_ENABLE_CXX_FLAGS], [dnl
2249 AC_MSG_CHECKING([for extra compiler flags for building])
2250 GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS],
2251 [pass compiler FLAGS when building library],
2252 [case "x$enable_cxx_flags" in
2253 xno | x) enable_cxx_flags= ;;
2255 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
2258 # Run through flags (either default or command-line) and set anything
2259 # extra (e.g., #defines) that must accompany particular g++ options.
2260 if test -n "$enable_cxx_flags"; then
2261 for f in $enable_cxx_flags; do
2265 *) # and we're trying to pass /what/ exactly?
2266 AC_MSG_ERROR([compiler flags start with a -]) ;;
2271 EXTRA_CXX_FLAGS="$enable_cxx_flags"
2272 AC_MSG_RESULT($EXTRA_CXX_FLAGS)
2273 AC_SUBST(EXTRA_CXX_FLAGS)
2278 dnl Check to see if debugging libraries are to be built.
2280 dnl --enable-libstdcxx-debug
2281 dnl builds a separate set of debugging libraries in addition to the
2282 dnl normal (shared, static) libstdc++ binaries.
2284 dnl --disable-libstdcxx-debug
2285 dnl builds only one (non-debug) version of libstdc++.
2287 dnl --enable-libstdcxx-debug-flags=FLAGS
2288 dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
2290 dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)]
2291 dnl Where DEFAULT is either `yes' or `no'.
2293 AC_DEFUN([GLIBCXX_ENABLE_DEBUG], [
2294 AC_MSG_CHECKING([for additional debug build])
2295 GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library])
2296 AC_MSG_RESULT($enable_libstdcxx_debug)
2297 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes)
2302 dnl Check for explicit debug flags.
2304 dnl --enable-libstdcxx-debug-flags='-O1'
2305 dnl is a general method for passing flags to be used when
2306 dnl building debug libraries with --enable-debug.
2308 dnl --disable-libstdcxx-debug-flags does nothing.
2309 dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
2310 dnl If "default flags" is an empty string, the effect is the same
2311 dnl as --disable or --enable=no.
2313 AC_DEFUN([GLIBCXX_ENABLE_DEBUG_FLAGS], [
2314 GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS],
2315 [pass compiler FLAGS when building debug library],
2316 [case "x$enable_libstdcxx_debug_flags" in
2317 xno | x) enable_libstdcxx_debug_flags= ;;
2319 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
2322 # Option parsed, now set things appropriately
2323 DEBUG_FLAGS="$enable_libstdcxx_debug_flags"
2324 AC_SUBST(DEBUG_FLAGS)
2326 AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS])
2331 dnl Check if the user only wants a freestanding library implementation.
2333 dnl --disable-hosted-libstdcxx will turn off most of the library build,
2334 dnl installing only the headers required by [17.4.1.3] and the language
2335 dnl support library. More than that will be built (to keep the Makefiles
2336 dnl conveniently clean), but not installed.
2339 dnl is_hosted (yes/no)
2342 dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0)
2344 AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [
2345 AC_ARG_ENABLE([hosted-libstdcxx],
2346 AC_HELP_STRING([--disable-hosted-libstdcxx],
2347 [only build freestanding C++ runtime support]),,
2350 enable_hosted_libstdcxx=no
2353 enable_hosted_libstdcxx=yes
2356 if test "$enable_hosted_libstdcxx" = no; then
2357 AC_MSG_NOTICE([Only freestanding libraries will be built])
2361 enable_libstdcxx_pch=no
2366 GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes)
2367 AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define,
2368 [Define to 1 if a full hosted library is built, or 0 if freestanding.])
2373 dnl Check for template specializations for the 'long long' type.
2374 dnl The result determines only whether 'long long' I/O is enabled; things
2375 dnl like numeric_limits<> specializations are always available.
2377 dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG
2378 dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined
2379 dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)]
2380 dnl Where DEFAULT is either `yes' or `no'.
2382 AC_DEFUN([GLIBCXX_ENABLE_LONG_LONG], [
2383 GLIBCXX_ENABLE(long-long,$1,,[enable template specializations for 'long long'])
2384 if test $enable_long_long = yes; then
2385 AC_DEFINE(_GLIBCXX_USE_LONG_LONG, 1,
2386 [Define if code specialized for long long should be used.])
2388 AC_MSG_CHECKING([for enabled long long specializations])
2389 AC_MSG_RESULT([$enable_long_long])
2394 dnl Check for decimal floating point.
2396 dnl http://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html#Decimal-Float
2398 dnl This checks to see if the host supports decimal floating point types.
2401 dnl _GLIBCXX_USE_DECIMAL_FLOAT
2403 AC_DEFUN([GLIBCXX_ENABLE_DECIMAL_FLOAT], [
2405 # Fake what AC_TRY_COMPILE does, without linking as this is
2406 # unnecessary for this test.
2408 cat > conftest.$ac_ext << EOF
2409 [#]line __oline__ "configure"
2419 AC_MSG_CHECKING([for ISO/IEC TR 24733 ])
2420 if AC_TRY_EVAL(ac_compile); then
2421 AC_DEFINE(_GLIBCXX_USE_DECIMAL_FLOAT, 1,
2422 [Define if ISO/IEC TR 24733 decimal floating point types are supported on this host.])
2427 AC_MSG_RESULT($enable_dfp)
2432 dnl Check for GNU 128-bit integer and floating point types.
2434 dnl Note: also checks that the types aren't standard types.
2437 dnl _GLIBCXX_USE_INT128
2438 dnl _GLIBCXX_USE_FLOAT128
2440 AC_DEFUN([GLIBCXX_ENABLE_INT128_FLOAT128], [
2445 # Fake what AC_TRY_COMPILE does, without linking as this is
2446 # unnecessary for this test.
2448 cat > conftest.$ac_ext << EOF
2449 [#]line __oline__ "configure"
2450 template<typename T1, typename T2>
2452 { typedef T2 type; };
2454 template<typename T>
2459 typename same<long, __int128>::type i1;
2460 typename same<long long, __int128>::type i2;
2464 AC_MSG_CHECKING([for __int128])
2465 if AC_TRY_EVAL(ac_compile); then
2466 AC_DEFINE(_GLIBCXX_USE_INT128, 1,
2467 [Define if __int128 is supported on this host.])
2472 AC_MSG_RESULT($enable_int128)
2475 cat > conftest.$ac_ext << EOF
2476 [#]line __oline__ "configure"
2477 template<typename T1, typename T2>
2479 { typedef T2 type; };
2481 template<typename T>
2486 typename same<double, __float128>::type f1;
2487 typename same<long double, __float128>::type f2;
2491 AC_MSG_CHECKING([for __float128])
2492 if AC_TRY_EVAL(ac_compile); then
2493 AC_DEFINE(_GLIBCXX_USE_FLOAT128, 1,
2494 [Define if __float128 is supported on this host.])
2499 AC_MSG_RESULT($enable_float128)
2506 dnl Check for template specializations for the 'wchar_t' type.
2508 dnl --enable-wchar_t defines _GLIBCXX_USE_WCHAR_T
2509 dnl --disable-wchar_t leaves _GLIBCXX_USE_WCHAR_T undefined
2510 dnl + Usage: GLIBCXX_ENABLE_WCHAR_T[(DEFAULT)]
2511 dnl Where DEFAULT is either `yes' or `no'.
2513 dnl Necessary support must also be present.
2515 AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [
2516 GLIBCXX_ENABLE(wchar_t,$1,,[enable template specializations for 'wchar_t'])
2518 # Test wchar.h for mbstate_t, which is needed for char_traits and fpos.
2519 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
2520 AC_MSG_CHECKING([for mbstate_t])
2521 AC_TRY_COMPILE([#include <wchar.h>],
2522 [mbstate_t teststate;],
2523 have_mbstate_t=yes, have_mbstate_t=no)
2524 AC_MSG_RESULT($have_mbstate_t)
2525 if test x"$have_mbstate_t" = xyes; then
2526 AC_DEFINE(HAVE_MBSTATE_T,1,[Define if mbstate_t exists in wchar.h.])
2529 # Test it always, for use in GLIBCXX_ENABLE_C99, together with
2531 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
2533 if test x"$enable_wchar_t" = x"yes"; then
2538 if test x"$ac_has_wchar_h" = xyes &&
2539 test x"$ac_has_wctype_h" = xyes; then
2540 AC_TRY_COMPILE([#include <wchar.h>
2601 ],[],[], [enable_wchar_t=no])
2609 if test x"$enable_wchar_t" = x"yes"; then
2610 AC_DEFINE(_GLIBCXX_USE_WCHAR_T, 1,
2611 [Define if code specialized for wchar_t should be used.])
2614 AC_MSG_CHECKING([for enabled wchar_t specializations])
2615 AC_MSG_RESULT([$enable_wchar_t])
2620 dnl Check to see if building and using a C++ precompiled header can be done.
2622 dnl --enable-libstdcxx-pch=yes
2623 dnl default, this shows intent to use stdc++.h.gch If it looks like it
2624 dnl may work, after some light-hearted attempts to puzzle out compiler
2625 dnl support, flip bits on in include/Makefile.am
2627 dnl --disable-libstdcxx-pch
2628 dnl turns off attempts to use or build stdc++.h.gch.
2631 dnl glibcxx_PCHFLAGS
2633 AC_DEFUN([GLIBCXX_ENABLE_PCH], [
2634 GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers])
2635 if test $enable_libstdcxx_pch = yes; then
2636 AC_CACHE_CHECK([for compiler with PCH support],
2637 [glibcxx_cv_prog_CXX_pch],
2638 [ac_save_CXXFLAGS="$CXXFLAGS"
2639 CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
2642 echo '#include <math.h>' > conftest.h
2643 if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \
2644 -o conftest.h.gch 1>&5 2>&1 &&
2645 echo '#error "pch failed"' > conftest.h &&
2646 echo '#include "conftest.h"' > conftest.cc &&
2647 $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ;
2649 glibcxx_cv_prog_CXX_pch=yes
2651 glibcxx_cv_prog_CXX_pch=no
2654 CXXFLAGS=$ac_save_CXXFLAGS
2657 enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch
2660 AC_MSG_CHECKING([for enabled PCH])
2661 AC_MSG_RESULT([$enable_libstdcxx_pch])
2663 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes)
2664 if test $enable_libstdcxx_pch = yes; then
2665 glibcxx_PCHFLAGS="-include bits/stdc++.h"
2669 AC_SUBST(glibcxx_PCHFLAGS)
2674 dnl Check for atomic builtins.
2676 dnl http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html#Atomic-Builtins
2678 dnl This checks to see if the host supports the compiler-generated
2679 dnl builtins for atomic operations for various integral sizes. Note, this
2680 dnl is intended to be an all-or-nothing switch, so all the atomic operations
2681 dnl that are used should be checked.
2684 dnl libgomp and libgfortran use a link test, see CHECK_SYNC_FETCH_AND_ADD.
2687 dnl _GLIBCXX_ATOMIC_BUILTINS_1
2688 dnl _GLIBCXX_ATOMIC_BUILTINS_2
2689 dnl _GLIBCXX_ATOMIC_BUILTINS_4
2690 dnl _GLIBCXX_ATOMIC_BUILTINS_8
2692 AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
2695 old_CXXFLAGS="$CXXFLAGS"
2697 # Do link tests if possible, instead asm tests, limited to some platforms
2698 # see discussion in PR target/40134, PR libstdc++/40133 and the thread
2699 # starting at http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00322.html
2700 atomic_builtins_link_tests=no
2701 if test x$gcc_no_link != xyes; then
2702 # Can do link tests. Limit to some tested platforms
2704 *-*-linux* | *-*-uclinux* | *-*-kfreebsd*-gnu | *-*-gnu*)
2705 atomic_builtins_link_tests=yes
2710 if test x$atomic_builtins_link_tests = xyes; then
2714 CXXFLAGS="$CXXFLAGS -fno-exceptions"
2716 AC_MSG_CHECKING([for atomic builtins for bool])
2717 AC_CACHE_VAL(glibcxx_cv_atomic_bool, [
2720 [typedef bool atomic_type;
2723 const atomic_type c3(0);
2724 __sync_fetch_and_add(&c1, c2);
2725 __sync_val_compare_and_swap(&c1, c3, c2);
2726 __sync_lock_test_and_set(&c1, c3);
2727 __sync_lock_release(&c1);
2728 __sync_synchronize();],
2729 [glibcxx_cv_atomic_bool=yes],
2730 [glibcxx_cv_atomic_bool=no])
2732 if test $glibcxx_cv_atomic_bool = yes; then
2733 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1,
2734 [Define if builtin atomic operations for bool are supported on this host.])
2736 AC_MSG_RESULT($glibcxx_cv_atomic_bool)
2738 AC_MSG_CHECKING([for atomic builtins for short])
2739 AC_CACHE_VAL(glibcxx_cv_atomic_short, [
2742 [typedef short atomic_type;
2745 const atomic_type c3(0);
2746 __sync_fetch_and_add(&c1, c2);
2747 __sync_val_compare_and_swap(&c1, c3, c2);
2748 __sync_lock_test_and_set(&c1, c3);
2749 __sync_lock_release(&c1);
2750 __sync_synchronize();],
2751 [glibcxx_cv_atomic_short=yes],
2752 [glibcxx_cv_atomic_short=no])
2754 if test $glibcxx_cv_atomic_short = yes; then
2755 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_2, 1,
2756 [Define if builtin atomic operations for short are supported on this host.])
2758 AC_MSG_RESULT($glibcxx_cv_atomic_short)
2760 AC_MSG_CHECKING([for atomic builtins for int])
2761 AC_CACHE_VAL(glibcxx_cv_atomic_int, [
2764 [typedef int atomic_type;
2767 const atomic_type c3(0);
2768 __sync_fetch_and_add(&c1, c2);
2769 __sync_val_compare_and_swap(&c1, c3, c2);
2770 __sync_lock_test_and_set(&c1, c3);
2771 __sync_lock_release(&c1);
2772 __sync_synchronize();],
2773 [glibcxx_cv_atomic_int=yes],
2774 [glibcxx_cv_atomic_int=no])
2776 if test $glibcxx_cv_atomic_int = yes; then
2777 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1,
2778 [Define if builtin atomic operations for int are supported on this host.])
2780 AC_MSG_RESULT($glibcxx_cv_atomic_int)
2782 AC_MSG_CHECKING([for atomic builtins for long long])
2783 AC_CACHE_VAL(glibcxx_cv_atomic_long_long, [
2786 [typedef long long atomic_type;
2789 const atomic_type c3(0);
2790 __sync_fetch_and_add(&c1, c2);
2791 __sync_val_compare_and_swap(&c1, c3, c2);
2792 __sync_lock_test_and_set(&c1, c3);
2793 __sync_lock_release(&c1);
2794 __sync_synchronize();],
2795 [glibcxx_cv_atomic_long_long=yes],
2796 [glibcxx_cv_atomic_long_long=no])
2798 if test $glibcxx_cv_atomic_long_long = yes; then
2799 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_8, 1,
2800 [Define if builtin atomic operations for long long are supported on this host.])
2802 AC_MSG_RESULT($glibcxx_cv_atomic_long_long)
2808 # Compile unoptimized.
2811 # Fake what AC_TRY_COMPILE does.
2813 cat > conftest.$ac_ext << EOF
2814 [#]line __oline__ "configure"
2817 typedef bool atomic_type;
2820 const atomic_type c3(0);
2821 __sync_fetch_and_add(&c1, c2);
2822 __sync_val_compare_and_swap(&c1, c3, c2);
2823 __sync_lock_test_and_set(&c1, c3);
2824 __sync_lock_release(&c1);
2825 __sync_synchronize();
2830 AC_MSG_CHECKING([for atomic builtins for bool])
2831 if AC_TRY_EVAL(ac_compile); then
2832 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
2833 glibcxx_cv_atomic_bool=no
2835 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1,
2836 [Define if builtin atomic operations for bool are supported on this host.])
2837 glibcxx_cv_atomic_bool=yes
2840 AC_MSG_RESULT($glibcxx_cv_atomic_bool)
2843 cat > conftest.$ac_ext << EOF
2844 [#]line __oline__ "configure"
2847 typedef short atomic_type;
2850 const atomic_type c3(0);
2851 __sync_fetch_and_add(&c1, c2);
2852 __sync_val_compare_and_swap(&c1, c3, c2);
2853 __sync_lock_test_and_set(&c1, c3);
2854 __sync_lock_release(&c1);
2855 __sync_synchronize();
2860 AC_MSG_CHECKING([for atomic builtins for short])
2861 if AC_TRY_EVAL(ac_compile); then
2862 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
2863 glibcxx_cv_atomic_short=no
2865 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_2, 1,
2866 [Define if builtin atomic operations for short are supported on this host.])
2867 glibcxx_cv_atomic_short=yes
2870 AC_MSG_RESULT($glibcxx_cv_atomic_short)
2873 cat > conftest.$ac_ext << EOF
2874 [#]line __oline__ "configure"
2877 // NB: _Atomic_word not necessarily int.
2878 typedef int atomic_type;
2881 const atomic_type c3(0);
2882 __sync_fetch_and_add(&c1, c2);
2883 __sync_val_compare_and_swap(&c1, c3, c2);
2884 __sync_lock_test_and_set(&c1, c3);
2885 __sync_lock_release(&c1);
2886 __sync_synchronize();
2891 AC_MSG_CHECKING([for atomic builtins for int])
2892 if AC_TRY_EVAL(ac_compile); then
2893 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
2894 glibcxx_cv_atomic_int=no
2896 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1,
2897 [Define if builtin atomic operations for int are supported on this host.])
2898 glibcxx_cv_atomic_int=yes
2901 AC_MSG_RESULT($glibcxx_cv_atomic_int)
2904 cat > conftest.$ac_ext << EOF
2905 [#]line __oline__ "configure"
2908 typedef long long atomic_type;
2911 const atomic_type c3(0);
2912 __sync_fetch_and_add(&c1, c2);
2913 __sync_val_compare_and_swap(&c1, c3, c2);
2914 __sync_lock_test_and_set(&c1, c3);
2915 __sync_lock_release(&c1);
2916 __sync_synchronize();
2921 AC_MSG_CHECKING([for atomic builtins for long long])
2922 if AC_TRY_EVAL(ac_compile); then
2923 if grep __sync_ conftest.s >/dev/null 2>&1 ; then
2924 glibcxx_cv_atomic_long_long=no
2926 AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_8, 1,
2927 [Define if builtin atomic operations for long long are supported on this host.])
2928 glibcxx_cv_atomic_long_long=yes
2931 AC_MSG_RESULT($glibcxx_cv_atomic_long_long)
2936 CXXFLAGS="$old_CXXFLAGS"
2939 # Set atomicity_dir to builtins if either of above tests pass.
2940 if test $glibcxx_cv_atomic_int = yes || test $glibcxx_cv_atomic_bool = yes ; then
2941 atomicity_dir=cpu/generic/atomicity_builtins
2944 # If still generic, set to mutex.
2945 if test $atomicity_dir = "cpu/generic" ; then
2946 atomicity_dir=cpu/generic/atomicity_mutex
2947 AC_MSG_WARN([No native atomic operations are provided for this platform.])
2948 if test "x$target_thread_file" = xsingle; then
2949 AC_MSG_WARN([They cannot be faked when thread support is disabled.])
2950 AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.])
2952 AC_MSG_WARN([They will be faked using a mutex.])
2953 AC_MSG_WARN([Performance of certain classes will degrade as a result.])
2961 dnl Check for exception handling support. If an explicit enable/disable
2962 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
2963 dnl target may or may not support call frame exceptions.
2965 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
2966 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
2967 dnl Neither one forces an attempt at detection.
2970 dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it
2972 AC_DEFUN([GLIBCXX_ENABLE_SJLJ_EXCEPTIONS], [
2973 AC_MSG_CHECKING([for exception model to use])
2976 GLIBCXX_ENABLE(sjlj-exceptions,auto,,
2977 [force use of builtin_setjmp for exceptions],
2978 [permit yes|no|auto])
2980 if test $enable_sjlj_exceptions = auto; then
2981 # Botheration. Now we've got to detect the exception model. Link tests
2982 # against libgcc.a are problematic since we've not been given proper -L
2983 # bits for single-tree newlib and libgloss.
2985 # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
2986 cat > conftest.$ac_ext << EOF
2987 [#]line __oline__ "configure"
2996 old_CXXFLAGS="$CXXFLAGS"
2998 if AC_TRY_EVAL(ac_compile); then
2999 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
3000 enable_sjlj_exceptions=yes
3001 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
3002 enable_sjlj_exceptions=no
3003 elif grep __cxa_end_cleanup conftest.s >/dev/null 2>&1 ; then
3004 enable_sjlj_exceptions=no
3007 CXXFLAGS="$old_CXXFLAGS"
3011 # This is a tad weird, for hysterical raisins. We have to map
3012 # enable/disable to two different models.
3013 case $enable_sjlj_exceptions in
3015 AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
3016 [Define if the compiler is configured for setjmp/longjmp exceptions.])
3017 ac_exception_model_name=sjlj
3020 ac_exception_model_name="call frame"
3023 AC_MSG_ERROR([unable to detect exception model])
3027 AC_MSG_RESULT($ac_exception_model_name)
3032 dnl Allow visibility attributes to be used on namespaces, objects, etc.
3034 dnl --enable-visibility enables attempt to use visibility attributes.
3035 dnl --disable-visibility turns off all use of visibility attributes.
3036 dnl + Usage: GLIBCXX_ENABLE_VISIBILITY[(DEFAULT)]
3037 dnl Where DEFAULT is 'yes'.
3039 AC_DEFUN([GLIBCXX_ENABLE_VISIBILITY], [
3040 GLIBCXX_ENABLE(visibility,$1,,[enables visibility safe usage])
3042 if test x$enable_visibility = xyes ; then
3043 dnl all hail libgfortran
3044 dnl Check whether the target supports hidden visibility.
3045 AC_CACHE_CHECK([whether the target supports hidden visibility],
3046 glibcxx_cv_have_attribute_visibility, [
3047 save_CFLAGS="$CFLAGS"
3048 CFLAGS="$CFLAGS -Werror"
3049 AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }],
3050 [], glibcxx_cv_have_attribute_visibility=yes,
3051 glibcxx_cv_have_attribute_visibility=no)
3052 CFLAGS="$save_CFLAGS"])
3053 if test $glibcxx_cv_have_attribute_visibility = no; then
3054 enable_visibility=no
3058 GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_visibility = yes)
3059 AC_MSG_NOTICE([visibility supported: $enable_visibility])
3064 dnl Add version tags to symbols in shared library (or not), additionally
3065 dnl marking other symbols as private/local (or not).
3067 dnl Sets libtool_VERSION, and determines shared library SONAME.
3069 dnl This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
3071 dnl --enable-symvers=style adds a version script to the linker call when
3072 dnl creating the shared library. The choice of version script is
3073 dnl controlled by 'style'.
3074 dnl --disable-symvers does not.
3076 dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)]
3077 dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to
3078 dnl choose a default style based on linker characteristics. Passing
3079 dnl 'no' disables versioning.
3081 AC_DEFUN([GLIBCXX_ENABLE_SYMVERS], [
3083 GLIBCXX_ENABLE(symvers,$1,[[[=STYLE]]],
3084 [enables symbol versioning of the shared library],
3085 [permit yes|no|gnu|gnu-versioned-namespace|darwin|darwin-export|sun])
3087 # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we
3088 # don't know enough about $LD to do tricks...
3089 AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES])
3090 # Sun style symbol versions needs GNU c++filt for make_sunver.pl to work
3091 # with extern "C++" in version scripts.
3092 AC_REQUIRE([GCC_PROG_GNU_CXXFILT])
3094 # Turn a 'yes' into a suitable default.
3095 if test x$enable_symvers = xyes ; then
3096 if test $enable_shared = no || test "x$LD" = x || test x$gcc_no_link = xyes; then
3099 if test $with_gnu_ld = yes ; then
3100 case ${target_os} in
3102 enable_symvers=no ;;
3104 enable_symvers=gnu ;;
3107 case ${target_os} in
3109 enable_symvers=darwin ;;
3110 # Sun symbol versioning exists since Solaris 2.5.
3111 solaris2.[[5-9]]* | solaris2.1[[0-9]]*)
3112 # make_sunver.pl needs GNU c++filt to support extern "C++" in
3113 # version scripts, so disable symbol versioning if none can be
3115 if test -z "$ac_cv_path_CXXFILT"; then
3116 AC_MSG_WARN([=== You have requested Sun symbol versioning, but])
3117 AC_MSG_WARN([=== no GNU c++filt could be found.])
3118 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3125 enable_symvers=no ;;
3131 # Check to see if 'darwin' or 'darwin-export' can win.
3132 if test x$enable_symvers = xdarwin-export ; then
3133 enable_symvers=darwin
3136 # Check if 'sun' was requested on non-Solaris 2 platforms.
3137 if test x$enable_symvers = xsun ; then
3138 case ${target_os} in
3144 AC_MSG_WARN([=== You have requested Sun symbol versioning, but])
3145 AC_MSG_WARN([=== you are not targetting Solaris 2.])
3146 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3152 # Check to see if 'gnu' can win.
3153 if test $enable_symvers = gnu ||
3154 test $enable_symvers = gnu-versioned-namespace ||
3155 test $enable_symvers = sun; then
3156 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
3157 AC_MSG_CHECKING([for shared libgcc])
3158 ac_save_CFLAGS="$CFLAGS"
3160 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no)
3161 CFLAGS="$ac_save_CFLAGS"
3162 if test $glibcxx_shared_libgcc = no; then
3163 cat > conftest.c <<EOF
3164 int main (void) { return 0; }
3167 glibcxx_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
3168 -shared -shared-libgcc -o conftest.so \
3169 conftest.c -v 2>&1 >/dev/null \
3170 | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'`
3172 rm -f conftest.c conftest.so
3173 if test x${glibcxx_libgcc_s_suffix+set} = xset; then
3174 CFLAGS=" -lgcc_s$glibcxx_libgcc_s_suffix"
3175 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes)
3176 CFLAGS="$ac_save_CFLAGS"
3179 AC_MSG_RESULT($glibcxx_shared_libgcc)
3181 # For GNU ld, we need at least this version. The format is described in
3182 # GLIBCXX_CHECK_LINKER_FEATURES above.
3183 glibcxx_min_gnu_ld_version=21400
3185 # If no shared libgcc, can't win.
3186 if test $glibcxx_shared_libgcc != yes; then
3187 AC_MSG_WARN([=== You have requested GNU symbol versioning, but])
3188 AC_MSG_WARN([=== you are not building a shared libgcc_s.])
3189 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3191 elif test $with_gnu_ld != yes && test $enable_symvers = sun; then
3192 : All interesting versions of Sun ld support sun style symbol versioning.
3193 elif test $with_gnu_ld != yes ; then
3195 AC_MSG_WARN([=== You have requested GNU symbol versioning, but])
3196 AC_MSG_WARN([=== you are not using the GNU linker.])
3197 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3199 elif test $glibcxx_ld_is_gold = yes ; then
3200 : All versions of gold support symbol versioning.
3201 elif test $glibcxx_gnu_ld_version -lt $glibcxx_min_gnu_ld_version ; then
3202 # The right tools, the right setup, but too old. Fallbacks?
3203 AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for)
3204 AC_MSG_WARN(=== full symbol versioning support in this release of GCC.)
3205 AC_MSG_WARN(=== You would need to upgrade your binutils to version)
3206 AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.)
3207 AC_MSG_WARN([=== Symbol versioning will be disabled.])
3212 # For libtool versioning info, format is CURRENT:REVISION:AGE
3213 libtool_VERSION=6:17:0
3215 # Everything parsed; figure out what files and settings to use.
3216 case $enable_symvers in
3218 SYMVER_FILE=config/abi/pre/none.ver
3221 SYMVER_FILE=config/abi/pre/gnu.ver
3222 AC_DEFINE(_GLIBCXX_SYMVER_GNU, 1,
3223 [Define to use GNU versioning in the shared library.])
3225 gnu-versioned-namespace)
3226 libtool_VERSION=7:0:0
3227 SYMVER_FILE=config/abi/pre/gnu-versioned-namespace.ver
3228 AC_DEFINE(_GLIBCXX_SYMVER_GNU_NAMESPACE, 1,
3229 [Define to use GNU namespace versioning in the shared library.])
3232 SYMVER_FILE=config/abi/pre/gnu.ver
3233 AC_DEFINE(_GLIBCXX_SYMVER_DARWIN, 1,
3234 [Define to use darwin versioning in the shared library.])
3237 SYMVER_FILE=config/abi/pre/gnu.ver
3238 AC_DEFINE(_GLIBCXX_SYMVER_SUN, 1,
3239 [Define to use Sun versioning in the shared library.])
3243 if test x$enable_symvers != xno ; then
3244 AC_DEFINE(_GLIBCXX_SYMVER, 1,
3245 [Define to use symbol versioning in the shared library.])
3248 AC_CACHE_CHECK([whether the target supports .symver directive],
3249 glibcxx_cv_have_as_symver_directive, [
3250 AC_TRY_COMPILE([void foo (void); __asm (".symver foo, bar@SYMVER");],
3251 [], glibcxx_cv_have_as_symver_directive=yes,
3252 glibcxx_cv_have_as_symver_directive=no)])
3253 if test $glibcxx_cv_have_as_symver_directive = yes; then
3254 AC_DEFINE(HAVE_AS_SYMVER_DIRECTIVE, 1,
3255 [Define to 1 if the target assembler supports .symver directive.])
3258 AC_SUBST(SYMVER_FILE)
3259 AC_SUBST(port_specific_symbol_files)
3260 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS, test $enable_symvers != no)
3261 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU, test $enable_symvers = gnu)
3262 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU_NAMESPACE, test $enable_symvers = gnu-versioned-namespace)
3263 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_DARWIN, test $enable_symvers = darwin)
3264 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SUN, test $enable_symvers = sun)
3265 AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers)
3267 if test $enable_symvers != no ; then
3268 case ${target_os} in
3269 # The Solaris 2 runtime linker doesn't support the GNU extension of
3270 # binding the same symbol to different versions
3272 symvers_renaming=no ;;
3273 # Other platforms with GNU symbol versioning (GNU/Linux, more?) do.
3275 AC_DEFINE(HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT, 1,
3276 [Define to 1 if the target runtime linker supports binding the same symbol to different versions.])
3277 symvers_renaming=yes ;;
3282 GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SOL2, test $symvers_renaming = no)
3284 # Now, set up compatibility support, if any.
3285 # In addition, need this to deal with std::size_t mangling in
3286 # src/compatibility.cc. In a perfect world, could use
3287 # typeid(std::size_t).name()[0] to do direct substitution.
3288 AC_MSG_CHECKING([for size_t as unsigned int])
3289 ac_save_CFLAGS="$CFLAGS"
3291 AC_TRY_COMPILE(, [__SIZE_TYPE__* stp; unsigned int* uip; stp = uip;],
3292 [glibcxx_size_t_is_i=yes], [glibcxx_size_t_is_i=no])
3293 CFLAGS=$ac_save_CFLAGS
3294 if test "$glibcxx_size_t_is_i" = yes; then
3295 AC_DEFINE(_GLIBCXX_SIZE_T_IS_UINT, 1, [Define if size_t is unsigned int.])
3297 AC_MSG_RESULT([$glibcxx_size_t_is_i])
3299 AC_MSG_CHECKING([for ptrdiff_t as int])
3300 ac_save_CFLAGS="$CFLAGS"
3302 AC_TRY_COMPILE(, [__PTRDIFF_TYPE__* ptp; int* ip; ptp = ip;],
3303 [glibcxx_ptrdiff_t_is_i=yes], [glibcxx_ptrdiff_t_is_i=no])
3304 CFLAGS=$ac_save_CFLAGS
3305 if test "$glibcxx_ptrdiff_t_is_i" = yes; then
3306 AC_DEFINE(_GLIBCXX_PTRDIFF_T_IS_INT, 1, [Define if ptrdiff_t is int.])
3308 AC_MSG_RESULT([$glibcxx_ptrdiff_t_is_i])
3313 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
3314 dnl We must stage the required headers so that they will be installed
3315 dnl with the library (unlike libgcc, the STL implementation is provided
3316 dnl solely within headers). Since we must not inject random user-space
3317 dnl macro names into user-provided C++ code, we first stage into <file>-in
3318 dnl and process to <file> with an output command. The reason for a two-
3319 dnl stage process here is to correctly handle $srcdir!=$objdir without
3320 dnl having to write complex code (the sed commands to clean the macro
3321 dnl namespace are complex and fragile enough as it is). We must also
3322 dnl add a relative path so that -I- is supported properly.
3324 AC_DEFUN([GLIBCXX_ENABLE_THREADS], [
3325 AC_MSG_CHECKING([for thread model used by GCC])
3326 target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
3327 AC_MSG_RESULT([$target_thread_file])
3332 dnl Check if gthread implementation defines the types and functions
3333 dnl required by the c++0x thread library. Conforming gthread
3334 dnl implementations can define __GTHREADS_CXX0X to enable use with c++0x.
3336 AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [
3340 ac_save_CXXFLAGS="$CXXFLAGS"
3341 CXXFLAGS="$CXXFLAGS -fno-exceptions \
3342 -I${toplevel_srcdir}/libgcc -I${toplevel_builddir}/libgcc"
3344 target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
3345 case $target_thread_file in
3347 CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS"
3350 AC_MSG_CHECKING([whether it can be safely assumed that mutex_timedlock is available])
3352 AC_TRY_COMPILE([#include <unistd.h>],
3354 // In case of POSIX threads check _POSIX_TIMEOUTS.
3355 #if (defined(_PTHREADS) \
3356 && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0))
3359 ], [ac_gthread_use_mutex_timedlock=1], [ac_gthread_use_mutex_timedlock=0])
3361 AC_DEFINE_UNQUOTED(_GTHREAD_USE_MUTEX_TIMEDLOCK, $ac_gthread_use_mutex_timedlock,
3362 [Define to 1 if mutex_timedlock is available.])
3364 if test $ac_gthread_use_mutex_timedlock = 1 ; then res_mutex_timedlock=yes ;
3365 else res_mutex_timedlock=no ; fi
3366 AC_MSG_RESULT([$res_mutex_timedlock])
3368 AC_MSG_CHECKING([for gthreads library])
3370 AC_TRY_COMPILE([#include "gthr.h"],
3372 #ifndef __GTHREADS_CXX0X
3375 ], [ac_has_gthreads=yes], [ac_has_gthreads=no])
3377 AC_MSG_RESULT([$ac_has_gthreads])
3379 if test x"$ac_has_gthreads" = x"yes"; then
3380 AC_DEFINE(_GLIBCXX_HAS_GTHREADS, 1,
3381 [Define if gthreads library is available.])
3384 CXXFLAGS="$ac_save_CXXFLAGS"
3389 # Check whether LC_MESSAGES is available in <locale.h>.
3390 # Ulrich Drepper <drepper@cygnus.com>, 1995.
3392 # This file file be copied and used freely without restrictions. It can
3393 # be used in projects which are not available under the GNU Public License
3394 # but which still want to provide support for the GNU gettext functionality.
3395 # Please note that the actual code is *not* freely available.
3396 AC_DEFUN([AC_LC_MESSAGES], [
3397 AC_CHECK_HEADER(locale.h, [
3398 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
3399 [AC_TRY_COMPILE([#include <locale.h>], [return LC_MESSAGES],
3400 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
3401 if test $ac_cv_val_LC_MESSAGES = yes; then
3402 AC_DEFINE(HAVE_LC_MESSAGES, 1,
3403 [Define if LC_MESSAGES is available in <locale.h>.])
3409 dnl Check whether get_nprocs is available in <sys/sysinfo.h>, and define _GLIBCXX_USE_GET_NPROCS.
3411 AC_DEFUN([GLIBCXX_CHECK_GET_NPROCS], [
3415 ac_save_CXXFLAGS="$CXXFLAGS"
3416 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3418 AC_MSG_CHECKING([for get_nprocs])
3419 AC_CACHE_VAL(glibcxx_cv_GET_NPROCS, [
3420 GCC_TRY_COMPILE_OR_LINK(
3421 [#include <sys/sysinfo.h>],
3422 [int n = get_nprocs();],
3423 [glibcxx_cv_GET_NPROCS=yes],
3424 [glibcxx_cv_GET_NPROCS=no])
3426 if test $glibcxx_cv_GET_NPROCS = yes; then
3427 AC_DEFINE(_GLIBCXX_USE_GET_NPROCS, 1, [Define if get_nprocs is available in <sys/sysinfo.h>.])
3429 AC_MSG_RESULT($glibcxx_cv_GET_NPROCS)
3431 CXXFLAGS="$ac_save_CXXFLAGS"
3436 dnl Check whether sysconf(_SC_NPROCESSORS_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROCESSORS_ONLN.
3438 AC_DEFUN([GLIBCXX_CHECK_SC_NPROCESSORS_ONLN], [
3442 ac_save_CXXFLAGS="$CXXFLAGS"
3443 CXXFLAGS="$CXXFLAGS -fno-exceptions"
3445 AC_MSG_CHECKING([for _SC_NPROCESSORS_ONLN])
3446 AC_CACHE_VAL(glibcxx_cv_SC_NPROCESSORS_ONLN, [
3447 GCC_TRY_COMPILE_OR_LINK(
3448 [#include <unistd.h>],
3449 [int n = sysconf(_SC_NPROCESSORS_ONLN);],
3450 [glibcxx_cv_SC_NPROCESSORS_ONLN=yes],
3451 [glibcxx_cv_SC_NPROCESSORS_ONLN=no])
3453 if test $glibcxx_cv_SC_NPROCESSORS_ONLN = yes; then
3454 AC_DEFINE(_GLIBCXX_USE_SC_NPROCESSORS_ONLN, 1, [Define if _SC_NPROCESSORS_ONLN is available in <unistd.h>.])
3456 AC_MSG_RESULT($glibcxx_cv_SC_NPROCESSORS_ONLN)
3458 CXXFLAGS="$ac_save_CXXFLAGS"
3463 # Macros from the top-level gcc directory.
3464 m4_include([../config/gc++filt.m4])
3465 m4_include([../config/tls.m4])