3 dnl GLIBCXX_CONDITIONAL (NAME, SHELL-TEST)
5 dnl Exactly like AM_CONDITIONAL, but delays evaluation of the test until the
6 dnl end of configure. This lets tested variables be reassigned, and the
7 dnl conditional will depend on the final state of the variable. For a simple
8 dnl example of why this is needed, see GLIBCXX_ENABLE_HOSTED.
10 m4_define([_m4_divert(glibcxx_diversion)], 8000)dnl
11 AC_DEFUN([GLIBCXX_CONDITIONAL], [dnl
12 m4_divert_text([glibcxx_diversion],dnl
13 AM_CONDITIONAL([$1],[$2])
16 AC_DEFUN([GLIBCXX_EVALUATE_CONDITIONALS], [m4_undivert([glibcxx_diversion])])dnl
20 dnl Check to see what architecture and operating system we are compiling
21 dnl for. Also, if architecture- or OS-specific flags are required for
22 dnl compilation, pick them up here.
24 AC_DEFUN([GLIBCXX_CHECK_HOST], [
25 . $glibcxx_srcdir/configure.host
26 AC_MSG_NOTICE([CPU config directory is $cpu_include_dir])
27 AC_MSG_NOTICE([OS config directory is $os_include_dir])
31 dnl Initialize the rest of the library configury. At this point we have
32 dnl variables like $host.
35 dnl gcc_version (x.y.z format)
38 dnl glibcxx_builddir (absolute path)
39 dnl glibcxx_srcdir (absolute path)
40 dnl toplevel_srcdir (absolute path)
43 dnl with_target_subdir
45 dnl - the variables in GLIBCXX_CHECK_HOST / configure.host
46 dnl - default settings for all AM_CONFITIONAL test variables
47 dnl - lots of tools, like CC and CXX
49 AC_DEFUN([GLIBCXX_CONFIGURE], [
50 # Keep these sync'd with the list in Makefile.am. The first provides an
51 # expandable list at autoconf time; the second provides an expandable list
52 # (i.e., shell variable) at configure time.
53 m4_define([glibcxx_SUBDIRS],[include libmath libsupc++ src po testsuite])
54 SUBDIRS='glibcxx_SUBDIRS'
56 # These need to be absolute paths, yet at the same time need to
57 # canonicalize only relative paths, because then amd will not unmount
58 # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
59 glibcxx_builddir=`${PWDCMD-pwd}`
61 [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;;
62 *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
64 toplevel_srcdir=${glibcxx_srcdir}/..
65 AC_SUBST(glibcxx_builddir)
66 AC_SUBST(glibcxx_srcdir)
67 AC_SUBST(toplevel_srcdir)
69 # We use these options to decide which functions to include. They are
70 # set from the top level.
71 AC_ARG_WITH([target-subdir],
72 AC_HELP_STRING([--with-target-subdir=SUBDIR],
73 [configuring in a subdirectory]))
75 AC_ARG_WITH([cross-host],
76 AC_HELP_STRING([--with-cross-host=HOST],
77 [configuring with a cross compiler]))
80 AC_HELP_STRING([--with-newlib],
81 [assume newlib as a system C library]))
83 # We're almost certainly being configured before anything else which uses
84 # C++, so all of our AC_PROG_* discoveries will be cached. It's vital that
85 # we not cache the value of CXX that we "discover" here, because it's set
86 # to something unique for us and libjava. Other target libraries need to
87 # find CXX for themselves. We yank the rug out from under the normal AC_*
88 # process by sneakily renaming the cache variable. This also lets us debug
89 # the value of "our" CXX in postmortems.
91 # We must also force CXX to /not/ be a precious variable, otherwise the
92 # wrong (non-multilib-adjusted) value will be used in multilibs. This
93 # little trick also affects CPPFLAGS, CXXFLAGS, and LDFLAGS. And as a side
94 # effect, CXXFLAGS is no longer automagically subst'd, so we have to do
95 # that ourselves. Un-preciousing AC_PROG_CC also affects CC and CFLAGS.
97 # -fno-builtin must be present here so that a non-conflicting form of
98 # std::exit can be guessed by AC_PROG_CXX, and used in later tests.
100 m4_define([ac_cv_prog_CXX],[glibcxx_cv_prog_CXX])
101 m4_rename([_AC_ARG_VAR_PRECIOUS],[glibcxx_PRECIOUS])
102 m4_define([_AC_ARG_VAR_PRECIOUS],[])
103 save_CXXFLAGS="$CXXFLAGS"
104 CXXFLAGS="$CXXFLAGS -fno-builtin"
107 CXXFLAGS="$save_CXXFLAGS"
108 m4_rename([glibcxx_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
112 # For directory versioning (e.g., headers) and other variables.
113 AC_MSG_CHECKING([for GCC version number])
114 gcc_version=`$CXX -dumpversion`
115 AC_MSG_RESULT($gcc_version)
117 # Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't
118 # available). Uncomment the next line to force a particular method.
122 AC_CHECK_TOOL(AS, as)
123 AC_CHECK_TOOL(AR, ar)
124 AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error)
128 # Set up safe default values for all subsequent AM_CONDITIONAL tests
129 # which are themselves conditionally expanded.
130 ## (Right now, this only matters for enable_wchar_t, but nothing prevents
131 ## other macros from doing the same. This should be automated.) -pme
134 #enable_libstdcxx_debug=no
135 #enable_libstdcxx_pch=no
140 #enable_hosted_libstdcxx=yes
142 # Find platform-specific directories containing configuration info.
143 # Also possibly modify flags used elsewhere, as needed by the platform.
148 m4_include([linkage.m4])
149 m4_include([../config/no-executables.m4])
153 dnl Tests for newer compiler features, or features that are present in newer
154 dnl compiler versions but not older compiler versions still in use, should
158 dnl WERROR='-Werror' if requested and possible; g++'s that lack the
159 dnl new inlining code or the new system_header pragma will die on -Werror.
160 dnl Leave it out by default and use maint-mode to use it.
161 dnl SECTION_FLAGS='-ffunction-sections -fdata-sections' if
162 dnl compiler supports it and the user has not requested debug mode.
164 AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [
165 # All these tests are for C++; save the language and the compiler flags.
166 # The CXXFLAGS thing is suspicious, but based on similar bits previously
167 # found in GLIBCXX_CONFIGURE.
170 ac_test_CXXFLAGS="${CXXFLAGS+set}"
171 ac_save_CXXFLAGS="$CXXFLAGS"
173 # Check for maintainer-mode bits.
174 if test x"$USE_MAINTAINER_MODE" = xno; then
180 # Check for -ffunction-sections -fdata-sections
181 AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
182 CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
183 AC_TRY_COMPILE(, [int foo;], [ac_fdsections=yes], [ac_fdsections=no])
184 if test "$ac_test_CXXFLAGS" = set; then
185 CXXFLAGS="$ac_save_CXXFLAGS"
187 # this is the suspicious part
190 if test x"$ac_fdsections" = x"yes"; then
191 SECTION_FLAGS='-ffunction-sections -fdata-sections'
193 AC_MSG_RESULT($ac_fdsections)
197 AC_SUBST(SECTION_FLAGS)
202 dnl If GNU ld is in use, check to see if tricky linker opts can be used. If
203 dnl the native linker is in use, all variables will be defined to something
204 dnl safe (like an empty string).
207 dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible
208 dnl OPT_LDFLAGS='-Wl,-O1' if possible
209 dnl LD (as a side effect of testing)
212 dnl glibcxx_gnu_ld_version (possibly)
214 dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will
215 dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems.
217 AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [
218 # If we're not using GNU ld, then there's no point in even trying these
219 # tests. Check for that first. We should have already tested for gld
220 # by now (in libtool), but require it now just to be safe...
221 test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
222 test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
223 AC_REQUIRE([AC_PROG_LD])
224 AC_REQUIRE([AC_PROG_AWK])
226 # The name set by libtool depends on the version of libtool. Shame on us
227 # for depending on an impl detail, but c'est la vie. Older versions used
228 # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
229 # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
230 # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't
231 # set (hence we're using an older libtool), then set it.
232 if test x${with_gnu_ld+set} != xset; then
233 if test x${ac_cv_prog_gnu_ld+set} != xset; then
234 # We got through "ac_require(ac_prog_ld)" and still not set? Huh?
237 with_gnu_ld=$ac_cv_prog_gnu_ld
241 # Start by getting the version number. I think the libtool test already
242 # does some of this, but throws away the result.
244 ldver=`$LD --version 2>/dev/null | head -1 | \
245 sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
247 glibcxx_gnu_ld_version=`echo $ldver | \
248 $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
251 if test "$with_gnu_ld" = "notbroken"; then
252 # GNU ld it is! Joy and bunny rabbits!
254 # All these tests are for C++; save the language and the compiler flags.
255 # Need to do this so that g++ won't try to link in libstdc++
256 ac_test_CFLAGS="${CFLAGS+set}"
257 ac_save_CFLAGS="$CFLAGS"
258 CFLAGS='-x c++ -Wl,--gc-sections'
260 # Check for -Wl,--gc-sections
261 # XXX This test is broken at the moment, as symbols required for linking
262 # are now in libsupc++ (not built yet). In addition, this test has
263 # cored on solaris in the past. In addition, --gc-sections doesn't
264 # really work at the moment (keeps on discarding used sections, first
265 # .eh_frame and now some of the glibc sections for iconv).
266 # Bzzzzt. Thanks for playing, maybe next time.
267 AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
275 ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
276 if test "$ac_test_CFLAGS" = set; then
277 CFLAGS="$ac_save_CFLAGS"
279 # this is the suspicious part
282 if test "$ac_sectionLDflags" = "yes"; then
283 SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
285 AC_MSG_RESULT($ac_sectionLDflags)
288 # Set linker optimization flags.
289 if test x"$with_gnu_ld" = x"yes"; then
290 OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
293 AC_SUBST(SECTION_LDFLAGS)
294 AC_SUBST(OPT_LDFLAGS)
299 dnl Check to see if this target can enable the wchar_t parts.
300 dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
301 dnl must have been previously checked.) By default, wide characters are
305 dnl HAVE_MBSTATE_T if mbstate_t is not in wchar.h
306 dnl _GLIBCXX_USE_WCHAR_T if all the bits are found.
308 dnl LIBICONV to a -l string containing the iconv library, if needed.
310 AC_DEFUN([GLIBCXX_CHECK_WCHAR_T_SUPPORT], [
311 # Test wchar.h for mbstate_t, which is needed for char_traits and
312 # others even if wchar_t support is not on.
313 AC_MSG_CHECKING([for mbstate_t])
314 AC_TRY_COMPILE([#include <wchar.h>],
315 [mbstate_t teststate;],
316 have_mbstate_t=yes, have_mbstate_t=no)
317 AC_MSG_RESULT($have_mbstate_t)
318 if test x"$have_mbstate_t" = xyes; then
319 AC_DEFINE(HAVE_MBSTATE_T)
322 # Sanity check for existence of ISO C99 headers for extended encoding.
323 AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
324 AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
326 # Only continue checking if the ISO C99 headers exist and support is on.
327 if test x"$ac_has_wchar_h" = xyes &&
328 test x"$ac_has_wctype_h" = xyes &&
329 test x"$enable_c_mbchar" != xno; then
331 # Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
332 # numeric_limits can instantiate type_traits<wchar_t>
333 AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
334 AC_TRY_COMPILE([#include <wchar.h>],
335 [int i = WCHAR_MIN; int j = WCHAR_MAX;],
336 has_wchar_minmax=yes, has_wchar_minmax=no)
337 AC_MSG_RESULT($has_wchar_minmax)
339 # Test wchar.h for WEOF, which is what we use to determine whether
340 # to specialize for char_traits<wchar_t> or not.
341 AC_MSG_CHECKING([for WEOF])
344 #include <stddef.h>],
346 has_weof=yes, has_weof=no)
347 AC_MSG_RESULT($has_weof)
349 # Tests for wide character functions used in char_traits<wchar_t>.
351 AC_CHECK_FUNCS([wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset],
354 # Checks for names injected into std:: by the c_std headers.
355 AC_CHECK_FUNCS([btowc wctob fgetwc fgetws fputwc fputws fwide \
356 fwprintf fwscanf swprintf swscanf vfwprintf vswprintf \
357 vwprintf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
358 mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstol \
359 wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
360 wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr],
363 # Checks for wide character functions that are not required
364 # for basic wchar_t support. Don't disable support if they are missing.
365 # Injection of these is wrapped with guard macros.
366 AC_CHECK_FUNCS([vfwscanf vswscanf vwscanf wcstof iswblank],[],[])
368 AC_MSG_CHECKING([for ISO C99 wchar_t support])
369 if test x"$has_weof" = xyes &&
370 test x"$has_wchar_minmax" = xyes &&
371 test x"$ac_wfuncs" = xyes;
373 ac_isoC99_wchar_t=yes
377 AC_MSG_RESULT($ac_isoC99_wchar_t)
379 # Use iconv for wchar_t to char conversions. As such, check for
380 # X/Open Portability Guide, version 2 features (XPG2).
381 AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
382 AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
384 # Check for existence of libiconv.a providing XPG2 wchar_t support.
385 AC_CHECK_LIB(iconv, iconv, LIBICONV="-liconv")
387 LIBS="$LIBS $LIBICONV"
390 AC_CHECK_FUNCS([iconv_open iconv_close iconv nl_langinfo],
391 [ac_XPG2funcs=yes], [ac_XPG2funcs=no])
395 AC_MSG_CHECKING([for XPG2 wchar_t support])
396 if test x"$ac_has_iconv_h" = xyes &&
397 test x"$ac_has_langinfo_h" = xyes &&
398 test x"$ac_XPG2funcs" = xyes;
404 AC_MSG_RESULT($ac_XPG2_wchar_t)
406 # At the moment, only enable wchar_t specializations if all the
407 # above support is present.
408 if test x"$ac_isoC99_wchar_t" = xyes &&
409 test x"$ac_XPG2_wchar_t" = xyes;
411 AC_DEFINE(_GLIBCXX_USE_WCHAR_T)
415 AC_MSG_CHECKING([for enabled wchar_t specializations])
416 AC_MSG_RESULT($enable_wchar_t)
421 dnl Check for headers for, and arguments to, the setrlimit() function.
422 dnl Used only in testsuite_hooks.h. Called from GLIBCXX_CONFIGURE_TESTSUITE.
425 dnl _GLIBCXX_RES_LIMITS if we can set artificial resource limits
426 dnl various HAVE_LIMIT_* for individual limit names
428 AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT_ancilliary], [
431 #include <sys/time.h>
432 #include <sys/resource.h>
434 [ int f = RLIMIT_$1 ; ],
435 [glibcxx_mresult=1], [glibcxx_mresult=0])
436 AC_DEFINE_UNQUOTED(HAVE_LIMIT_$1, $glibcxx_mresult,
437 [Only used in build directory testsuite_hooks.h.])
440 AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT], [
441 setrlimit_have_headers=yes
442 AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
444 [setrlimit_have_headers=no])
445 # If don't have the headers, then we can't run the tests now, and we
446 # won't be seeing any of these during testsuite compilation.
447 if test $setrlimit_have_headers = yes; then
448 # Can't do these in a loop, else the resulting syntax is wrong.
449 GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA)
450 GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS)
451 GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM)
452 GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS)
453 GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE)
455 # Check for rlimit, setrlimit.
456 AC_CACHE_VAL(ac_setrlimit, [
459 #include <sys/time.h>
460 #include <sys/resource.h>
464 [ac_setrlimit=yes], [ac_setrlimit=no])
468 AC_MSG_CHECKING([for testsuite resource limits support])
469 if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
471 AC_DEFINE(_GLIBCXX_RES_LIMITS)
475 AC_MSG_RESULT($ac_res_limits)
480 dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>.
481 dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately.
483 AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [
484 AC_CACHE_VAL(glibcxx_cv_S_ISREG, [
486 [#include <sys/stat.h>],
489 S_ISREG(buffer.st_mode);],
490 [glibcxx_cv_S_ISREG=yes],
491 [glibcxx_cv_S_ISREG=no])
493 AC_CACHE_VAL(glibcxx_cv_S_IFREG, [
495 [#include <sys/stat.h>],
498 S_IFREG & buffer.st_mode;],
499 [glibcxx_cv_S_IFREG=yes],
500 [glibcxx_cv_S_IFREG=no])
502 if test $glibcxx_cv_S_ISREG = yes; then
503 AC_DEFINE(HAVE_S_ISREG)
504 elif test $glibcxx_cv_S_IFREG = yes; then
505 AC_DEFINE(HAVE_S_IFREG)
511 dnl Check whether poll is available in <poll.h>, and define HAVE_POLL.
513 AC_DEFUN([GLIBCXX_CHECK_POLL], [
514 AC_CACHE_VAL(glibcxx_cv_POLL, [
517 [struct pollfd pfd[1];
518 pfd[0].events = POLLIN;
520 [glibcxx_cv_POLL=yes],
521 [glibcxx_cv_POLL=no])
523 if test $glibcxx_cv_POLL = yes; then
530 dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV.
532 AC_DEFUN([GLIBCXX_CHECK_WRITEV], [
533 AC_CACHE_VAL(glibcxx_cv_WRITEV, [
535 [#include <sys/uio.h>],
536 [struct iovec iov[2];
538 [glibcxx_cv_WRITEV=yes],
539 [glibcxx_cv_WRITEV=no])
541 if test $glibcxx_cv_WRITEV = yes; then
542 AC_DEFINE(HAVE_WRITEV)
548 dnl Check whether int64_t is available in <stdint.h>, and define HAVE_INT64_T.
550 AC_DEFUN([GLIBCXX_CHECK_INT64_T], [
551 AC_CACHE_VAL(glibcxx_cv_INT64_T, [
553 [#include <stdint.h>],
555 [glibcxx_cv_INT64_T=yes],
556 [glibcxx_cv_INT64_T=no])
558 if test $glibcxx_cv_INT64_T = yes; then
559 AC_DEFINE(HAVE_INT64_T)
565 dnl Check whether LFS support is available.
567 AC_DEFUN([GLIBCXX_CHECK_LFS], [
570 ac_save_CXXFLAGS="$CXXFLAGS"
571 CXXFLAGS="$CXXFLAGS -fno-exceptions"
572 AC_CACHE_VAL(glibcxx_cv_LFS, [
576 #include <sys/stat.h>
580 fseeko64(fp, 0, SEEK_CUR);
582 lseek64(1, 0, SEEK_CUR);
585 [glibcxx_cv_LFS=yes],
588 if test $glibcxx_cv_LFS = yes; then
589 AC_DEFINE(_GLIBCXX_USE_LFS)
591 CXXFLAGS="$ac_save_CXXFLAGS"
597 dnl Check for whether a fully dynamic basic_string implementation should
598 dnl be turned on, that does not put empty objects in per-process static
599 dnl memory (mostly useful together with shared memory allocators, see PR
600 dnl libstdc++/16612 for details).
602 dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING
603 dnl --disable-fully-dynamic-string leaves _GLIBCXX_FULLY_DYNAMIC_STRING undefined
604 dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)]
605 dnl Where DEFAULT is either `yes' or `no'.
607 AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [
608 GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory])
609 if test $enable_fully_dynamic_string = yes; then
610 AC_DEFINE(_GLIBCXX_FULLY_DYNAMIC_STRING)
616 dnl Does any necessary configuration of the testsuite directory. Generates
617 dnl the testsuite_hooks.h header.
619 dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this.
622 dnl enable_abi_check / GLIBCXX_TEST_ABI
623 dnl GLIBCXX_TEST_WCHAR_T
624 dnl GLIBCXX_TEST_THREAD
628 AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [
629 if $GLIBCXX_IS_NATIVE && test $is_hosted = yes; then
630 # Do checks for resource limit functions.
631 GLIBCXX_CHECK_SETRLIMIT
633 # Look for setenv, so that extended locale tests can be performed.
634 GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
636 if test $enable_symvers = no; then
641 enable_abi_check=no ;;
643 enable_abi_check=yes ;;
647 # Only build this as native, since automake does not understand
652 # Export file names for ABI checking.
653 baseline_dir="$glibcxx_srcdir/config/abi/${abi_baseline_pair}\$(MULTISUBDIR)"
654 AC_SUBST(baseline_dir)
656 GLIBCXX_CONDITIONAL(GLIBCXX_TEST_WCHAR_T, test $enable_wchar_t = yes)
657 GLIBCXX_CONDITIONAL(GLIBCXX_TEST_THREAD, test $enable_thread = yes)
658 GLIBCXX_CONDITIONAL(GLIBCXX_TEST_ABI, test $enable_abi_check = yes)
663 dnl Set up *_INCLUDES variables for all sundry Makefile.am's.
667 dnl TOPLEVEL_INCLUDES
669 AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [
670 # Used for every C++ compile we perform.
672 -I$glibcxx_builddir/include/$host_alias \
673 -I$glibcxx_builddir/include \
674 -I$glibcxx_srcdir/libsupc++"
676 # For Canadian crosses, pick this up too.
677 if test $CANADIAN = yes; then
678 GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}"
681 # Stuff in the actual top level. Currently only used by libsupc++ to
682 # get unwind* headers from the gcc dir.
683 #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc -I$(toplevel_srcdir)/include'
684 TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc'
686 # Now, export this to all the little Makefiles....
687 AC_SUBST(GLIBCXX_INCLUDES)
688 AC_SUBST(TOPLEVEL_INCLUDES)
693 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
694 dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.)
697 dnl OPTIMIZE_CXXFLAGS
700 AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [
701 # Optimization flags that are probably a good idea for thrill-seekers. Just
702 # uncomment the lines below and make, everything else is ready to go...
703 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
705 AC_SUBST(OPTIMIZE_CXXFLAGS)
707 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
713 dnl All installation directory information is determined here.
717 dnl glibcxx_prefixdir
718 dnl glibcxx_toolexecdir
719 dnl glibcxx_toolexeclibdir
721 dnl Assumes cross_compiling bits already done, and with_cross_host in
724 AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [
725 glibcxx_toolexecdir=no
726 glibcxx_toolexeclibdir=no
727 glibcxx_prefixdir=$prefix
729 AC_MSG_CHECKING([for gxx-include-dir])
730 AC_ARG_WITH([gxx-include-dir],
731 AC_HELP_STRING([--with-gxx-include-dir=DIR],
732 [installation directory for include files]),
734 yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;;
735 no) gxx_include_dir=no ;;
736 *) gxx_include_dir=$withval ;;
738 [gxx_include_dir=no])
739 AC_MSG_RESULT($gxx_include_dir)
741 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
742 AC_ARG_ENABLE([version-specific-runtime-libs],
743 AC_HELP_STRING([--enable-version-specific-runtime-libs],
744 [Specify that runtime libraries should be installed in a compiler-specific directory]),
745 [case "$enableval" in
746 yes) version_specific_libs=yes ;;
747 no) version_specific_libs=no ;;
748 *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
750 [version_specific_libs=no])
751 AC_MSG_RESULT($version_specific_libs)
753 # Default case for install directory for include files.
754 if test $version_specific_libs = no && test $gxx_include_dir = no; then
755 gxx_include_dir='${prefix}'/include/c++/${gcc_version}
758 # Version-specific runtime libs processing.
759 if test $version_specific_libs = yes; then
760 # Need the gcc compiler version to know where to install libraries
761 # and header files if --enable-version-specific-runtime-libs option
762 # is selected. FIXME: these variables are misnamed, there are
763 # no executables installed in _toolexecdir or _toolexeclibdir.
764 if test x"$gxx_include_dir" = x"no"; then
765 gxx_include_dir='${libdir}/gcc/${host_alias}/'$gcc_version/include/c++
767 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
768 glibcxx_toolexeclibdir='${toolexecdir}/'$gcc_version'$(MULTISUBDIR)'
771 # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir
772 # Install a library built with a cross compiler in tooldir, not libdir.
773 if test x"$glibcxx_toolexecdir" = x"no"; then
774 if test -n "$with_cross_host" &&
775 test x"$with_cross_host" != x"no"; then
776 glibcxx_toolexecdir='${exec_prefix}/${host_alias}'
777 glibcxx_toolexeclibdir='${toolexecdir}/lib'
779 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
780 glibcxx_toolexeclibdir='${libdir}'
782 multi_os_directory=`$CXX -print-multi-os-directory`
783 case $multi_os_directory in
784 .) ;; # Avoid trailing /.
785 *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;;
789 AC_MSG_CHECKING([for install location])
790 AC_MSG_RESULT($gxx_include_dir)
792 AC_SUBST(glibcxx_prefixdir)
793 AC_SUBST(gxx_include_dir)
794 AC_SUBST(glibcxx_toolexecdir)
795 AC_SUBST(glibcxx_toolexeclibdir)
801 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING)
802 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c)
803 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER)
805 dnl See docs/html/17_intro/configury.html#enable for documentation.
807 m4_define([GLIBCXX_ENABLE],[dnl
808 m4_define([_g_switch],[--enable-$1])dnl
809 m4_define([_g_help],[AC_HELP_STRING(_g_switch$3,[$4 @<:@default=$2@:>@])])dnl
810 AC_ARG_ENABLE($1,_g_help,
815 m4_bpatsubst([$5],[permit ])) ;;
816 *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;;
817 dnl Idea for future: generate a URL pointing to
818 dnl "onlinedocs/configopts.html#whatever"
825 *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;;
829 [enable_]m4_bpatsubst([$1],-,_)[=][$2])
830 m4_undefine([_g_switch])dnl
831 m4_undefine([_g_help])dnl
836 dnl Check for ISO/IEC 9899:1999 "C99" support.
838 dnl --enable-c99 defines _GLIBCXX_USE_C99
839 dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined
840 dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)]
841 dnl Where DEFAULT is either `yes' or `no'.
842 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
844 AC_DEFUN([GLIBCXX_ENABLE_C99], [
845 GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support])
850 # Check for the existence of <math.h> functions used if C99 is enabled.
852 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
853 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
854 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
855 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
856 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
857 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
858 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
859 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
860 AC_TRY_COMPILE([#include <math.h>],
861 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
862 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
863 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
864 AC_TRY_COMPILE([#include <math.h>],
865 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
866 AC_TRY_COMPILE([#include <math.h>],
867 [isunordered(0.0,0.0);],, [ac_c99_math=no])
868 AC_MSG_RESULT($ac_c99_math)
870 if test x"$ac_c99_math" = x"yes"; then
871 AC_DEFINE(_GLIBCXX_USE_C99_MATH)
874 # Check for the existence in <stdio.h> of vscanf, et. al.
876 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
877 AC_TRY_COMPILE([#include <stdio.h>],
878 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
879 AC_TRY_COMPILE([#include <stdio.h>
881 void foo(char* fmt, ...)
882 {va_list args; va_start(args, fmt);
883 vfscanf(stderr, "%i", args);}],
884 [],, [ac_c99_stdio=no])
885 AC_TRY_COMPILE([#include <stdio.h>
887 void foo(char* fmt, ...)
888 {va_list args; va_start(args, fmt);
889 vscanf("%i", args);}],
890 [],, [ac_c99_stdio=no])
891 AC_TRY_COMPILE([#include <stdio.h>
893 void foo(char* fmt, ...)
894 {va_list args; va_start(args, fmt);
895 vsnprintf(fmt, 0, "%i", args);}],
896 [],, [ac_c99_stdio=no])
897 AC_TRY_COMPILE([#include <stdio.h>
899 void foo(char* fmt, ...)
900 {va_list args; va_start(args, fmt);
901 vsscanf(fmt, "%i", args);}],
902 [],, [ac_c99_stdio=no])
903 AC_MSG_RESULT($ac_c99_stdio)
905 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
907 AC_MSG_CHECKING([for lldiv_t declaration])
908 AC_CACHE_VAL(ac_c99_lldiv_t, [
909 AC_TRY_COMPILE([#include <stdlib.h>],
911 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
913 AC_MSG_RESULT($ac_c99_lldiv_t)
915 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
916 AC_TRY_COMPILE([#include <stdlib.h>],
917 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
918 AC_TRY_COMPILE([#include <stdlib.h>],
919 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
920 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
921 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
922 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
923 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
924 if test x"$ac_c99_lldiv_t" = x"no"; then
927 AC_MSG_RESULT($ac_c99_stdlib)
929 # Check for the existence of <wchar.h> functions used if C99 is enabled.
930 # XXX the wchar.h checks should be rolled into the general C99 bits.
932 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
933 AC_TRY_COMPILE([#include <wchar.h>],
934 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
935 AC_TRY_COMPILE([#include <wchar.h>],
936 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
937 AC_TRY_COMPILE([#include <wchar.h>],
938 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
939 AC_MSG_RESULT($ac_c99_wchar)
941 AC_MSG_CHECKING([for enabled ISO C99 support])
942 if test x"$ac_c99_math" = x"no" ||
943 test x"$ac_c99_stdio" = x"no" ||
944 test x"$ac_c99_stdlib" = x"no" ||
945 test x"$ac_c99_wchar" = x"no"; then
948 AC_MSG_RESULT($enable_c99)
950 if test x"$ac_99_math" = x"yes"; then
951 AC_DEFINE(_GLIBCXX_USE_C99_MATH)
954 # Option parsed, now set things appropriately
955 if test x"$enable_c99" = x"yes"; then
956 AC_DEFINE(_GLIBCXX_USE_C99)
964 dnl Check for what type of C headers to use.
966 dnl --enable-cheaders= [does stuff].
967 dnl --disable-cheaders [does not do anything, really].
968 dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)]
969 dnl Where DEFAULT is either `c' or `c_std'.
971 AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [
972 GLIBCXX_ENABLE(cheaders,$1,[=KIND],
973 [construct "C" headers for g++], [permit c|c_std])
974 AC_MSG_NOTICE("C" header strategy set to $enable_cheaders)
976 C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders
978 AC_SUBST(C_INCLUDE_DIR)
979 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c)
980 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std)
981 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes)
986 dnl Check for which locale library to use. The choice is mapped to
987 dnl a subdirectory of config/locale.
989 dnl Default is generic.
991 AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [
992 AC_MSG_CHECKING([for C locale to use])
993 GLIBCXX_ENABLE(clocale,auto,[@<:@=MODEL@:>@],
994 [use MODEL for target locale package],
995 [permit generic|gnu|ieee_1003.1-2001|yes|no|auto])
997 # If they didn't use this option switch, or if they specified --enable
998 # with no specific model, we'll have to look for one. If they
999 # specified --disable (???), do likewise.
1000 if test $enable_clocale = no || test $enable_clocale = yes; then
1004 # Either a known package, or "auto"
1005 enable_clocale_flag=$enable_clocale
1007 # Probe for locale support if no specific model is specified.
1008 # Default to "generic".
1009 if test $enable_clocale_flag = auto; then
1010 case ${target_os} in
1011 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
1012 AC_EGREP_CPP([_GLIBCXX_ok], [
1013 #include <features.h>
1014 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1017 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1019 # Test for bugs early in glibc-2.2.x series
1020 if test $enable_clocale_flag = gnu; then
1022 #define _GNU_SOURCE 1
1025 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
1026 extern __typeof(newlocale) __newlocale;
1027 extern __typeof(duplocale) __duplocale;
1028 extern __typeof(strcoll_l) __strcoll_l;
1032 const char __one[] = "Äuglein Augmen";
1033 const char __two[] = "Äuglein";
1038 loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1039 loc_dup = __duplocale(loc);
1040 i = __strcoll_l(__one, __two, loc);
1041 j = __strcoll_l(__one, __two, loc_dup);
1045 [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1046 [enable_clocale_flag=generic])
1049 # ... at some point put __strxfrm_l tests in as well.
1052 enable_clocale_flag=darwin
1055 enable_clocale_flag=generic
1060 # Deal with gettext issues. Default to not using it (=no) until we detect
1061 # support for it later. Let the user turn it off via --e/d, but let that
1062 # default to on for easier handling.
1065 AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]),
1069 # Set configure bits for specified locale package
1070 case ${enable_clocale_flag} in
1072 AC_MSG_RESULT(generic)
1074 CLOCALE_H=config/locale/generic/c_locale.h
1075 CLOCALE_CC=config/locale/generic/c_locale.cc
1076 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1077 CCOLLATE_CC=config/locale/generic/collate_members.cc
1078 CCTYPE_CC=config/locale/generic/ctype_members.cc
1079 CMESSAGES_H=config/locale/generic/messages_members.h
1080 CMESSAGES_CC=config/locale/generic/messages_members.cc
1081 CMONEY_CC=config/locale/generic/monetary_members.cc
1082 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1083 CTIME_H=config/locale/generic/time_members.h
1084 CTIME_CC=config/locale/generic/time_members.cc
1085 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1088 AC_MSG_RESULT(darwin)
1090 CLOCALE_H=config/locale/generic/c_locale.h
1091 CLOCALE_CC=config/locale/generic/c_locale.cc
1092 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1093 CCOLLATE_CC=config/locale/generic/collate_members.cc
1094 CCTYPE_CC=config/locale/darwin/ctype_members.cc
1095 CMESSAGES_H=config/locale/generic/messages_members.h
1096 CMESSAGES_CC=config/locale/generic/messages_members.cc
1097 CMONEY_CC=config/locale/generic/monetary_members.cc
1098 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1099 CTIME_H=config/locale/generic/time_members.h
1100 CTIME_CC=config/locale/generic/time_members.cc
1101 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1107 # Declare intention to use gettext, and add support for specific
1109 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1112 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1113 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1114 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1117 # Export the build objects.
1118 for ling in $ALL_LINGUAS; do \
1119 glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \
1120 glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \
1122 AC_SUBST(glibcxx_MOFILES)
1123 AC_SUBST(glibcxx_POFILES)
1125 CLOCALE_H=config/locale/gnu/c_locale.h
1126 CLOCALE_CC=config/locale/gnu/c_locale.cc
1127 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
1128 CCOLLATE_CC=config/locale/gnu/collate_members.cc
1129 CCTYPE_CC=config/locale/gnu/ctype_members.cc
1130 CMESSAGES_H=config/locale/gnu/messages_members.h
1131 CMESSAGES_CC=config/locale/gnu/messages_members.cc
1132 CMONEY_CC=config/locale/gnu/monetary_members.cc
1133 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1134 CTIME_H=config/locale/gnu/time_members.h
1135 CTIME_CC=config/locale/gnu/time_members.cc
1136 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
1139 AC_MSG_RESULT(IEEE 1003.1)
1141 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1142 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1143 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1144 CCOLLATE_CC=config/locale/generic/collate_members.cc
1145 CCTYPE_CC=config/locale/generic/ctype_members.cc
1146 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1147 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1148 CMONEY_CC=config/locale/generic/monetary_members.cc
1149 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1150 CTIME_H=config/locale/generic/time_members.h
1151 CTIME_CC=config/locale/generic/time_members.cc
1152 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1156 # This is where the testsuite looks for locale catalogs, using the
1157 # -DLOCALEDIR define during testsuite compilation.
1158 glibcxx_localedir=${glibcxx_builddir}/po/share/locale
1159 AC_SUBST(glibcxx_localedir)
1161 # A standalone libintl (e.g., GNU libintl) may be in use.
1162 if test $USE_NLS = yes; then
1163 AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no)
1164 AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no)
1166 if test $USE_NLS = yes; then
1167 AC_DEFINE(_GLIBCXX_USE_NLS)
1172 AC_SUBST(CMESSAGES_H)
1173 AC_SUBST(CCODECVT_CC)
1174 AC_SUBST(CCOLLATE_CC)
1176 AC_SUBST(CMESSAGES_CC)
1178 AC_SUBST(CNUMERIC_CC)
1181 AC_SUBST(CLOCALE_CC)
1182 AC_SUBST(CLOCALE_INTERNAL_H)
1187 dnl Check for which std::allocator base class to use. The choice is
1188 dnl mapped from a subdirectory of include/ext.
1192 AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [
1193 AC_MSG_CHECKING([for std::allocator base class to use])
1194 GLIBCXX_ENABLE(libstdcxx-allocator,auto,[=KIND],
1195 [use KIND for target std::allocator base],
1196 [permit new|malloc|mt|bitmap|pool|yes|no|auto])
1198 # If they didn't use this option switch, or if they specified --enable
1199 # with no specific model, we'll have to look for one. If they
1200 # specified --disable (???), do likewise.
1201 if test $enable_libstdcxx_allocator = no ||
1202 test $enable_libstdcxx_allocator = yes;
1204 enable_libstdcxx_allocator=auto
1207 # Either a known package, or "auto". Auto implies the default choice
1208 # for a particular platform.
1209 enable_libstdcxx_allocator_flag=$enable_libstdcxx_allocator
1211 # Probe for host-specific support if no specific model is specified.
1213 if test $enable_libstdcxx_allocator_flag = auto; then
1214 case ${target_os} in
1215 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
1216 enable_libstdcxx_allocator_flag=mt
1219 enable_libstdcxx_allocator_flag=new
1223 AC_MSG_RESULT($enable_libstdcxx_allocator_flag)
1226 # Set configure bits for specified locale package
1227 case ${enable_libstdcxx_allocator_flag} in
1229 ALLOCATOR_H=config/allocator/bitmap_allocator_base.h
1230 ALLOCATOR_NAME=__gnu_cxx::bitmap_allocator
1233 ALLOCATOR_H=config/allocator/malloc_allocator_base.h
1234 ALLOCATOR_NAME=__gnu_cxx::malloc_allocator
1237 ALLOCATOR_H=config/allocator/mt_allocator_base.h
1238 ALLOCATOR_NAME=__gnu_cxx::__mt_alloc
1241 ALLOCATOR_H=config/allocator/new_allocator_base.h
1242 ALLOCATOR_NAME=__gnu_cxx::new_allocator
1245 ALLOCATOR_H=config/allocator/pool_allocator_base.h
1246 ALLOCATOR_NAME=__gnu_cxx::__pool_alloc
1250 AC_SUBST(ALLOCATOR_H)
1251 AC_SUBST(ALLOCATOR_NAME)
1256 dnl Check for whether the Boost-derived checks should be turned on.
1258 dnl --enable-concept-checks turns them on.
1259 dnl --disable-concept-checks leaves them off.
1260 dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
1261 dnl Where DEFAULT is either `yes' or `no'.
1263 AC_DEFUN([GLIBCXX_ENABLE_CONCEPT_CHECKS], [
1264 GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks])
1265 if test $enable_concept_checks = yes; then
1266 AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS)
1272 dnl Check for which I/O library to use: stdio, or something specific.
1274 dnl Default is stdio.
1276 AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [
1277 AC_MSG_CHECKING([for underlying I/O to use])
1278 GLIBCXX_ENABLE(cstdio,stdio,[=PACKAGE],
1279 [use target-specific I/O package], [permit stdio])
1281 # Now that libio has been removed, you can have any color you want as long
1282 # as it's black. This is one big no-op until other packages are added, but
1283 # showing the framework never hurts.
1284 case ${enable_cstdio} in
1286 CSTDIO_H=config/io/c_io_stdio.h
1287 BASIC_FILE_H=config/io/basic_file_stdio.h
1288 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1289 AC_MSG_RESULT(stdio)
1294 AC_SUBST(BASIC_FILE_H)
1295 AC_SUBST(BASIC_FILE_CC)
1300 dnl Check for "unusual" flags to pass to the compiler while building.
1302 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1303 dnl experimental flags such as -fpch, -fIMI, -Dfloat=char, etc.
1304 dnl --disable-cxx-flags passes nothing.
1305 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1306 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1307 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1308 dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags)
1309 dnl If "default flags" is an empty string, the effect is the same
1310 dnl as --disable or --enable=no.
1312 AC_DEFUN([GLIBCXX_ENABLE_CXX_FLAGS], [dnl
1313 AC_MSG_CHECKING([for extra compiler flags for building])
1314 GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS],
1315 [pass compiler FLAGS when building library],
1316 [case "x$enable_cxx_flags" in
1317 xno | x) enable_cxx_flags= ;;
1319 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
1322 # Run through flags (either default or command-line) and set anything
1323 # extra (e.g., #defines) that must accompany particular g++ options.
1324 if test -n "$enable_cxx_flags"; then
1325 for f in $enable_cxx_flags; do
1329 *) # and we're trying to pass /what/ exactly?
1330 AC_MSG_ERROR([compiler flags start with a -]) ;;
1335 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1336 AC_MSG_RESULT($EXTRA_CXX_FLAGS)
1337 AC_SUBST(EXTRA_CXX_FLAGS)
1342 dnl Check for wide character support. Has the same effect as the option
1343 dnl in gcc's configure, but in a form that autoconf can mess with.
1345 dnl --enable-c-mbchar requests all the wchar_t stuff.
1346 dnl --disable-c-mbchar doesn't.
1347 dnl + Usage: GLIBCXX_ENABLE_C_MBCHAR[(DEFAULT)]
1348 dnl Where DEFAULT is either `yes' or `no'.
1350 AC_DEFUN([GLIBCXX_ENABLE_C_MBCHAR], [
1351 GLIBCXX_ENABLE(c-mbchar,$1,,[enable multibyte (wide) characters])
1352 # Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1357 dnl Check to see if debugging libraries are to be built.
1359 dnl --enable-libstdcxx-debug
1360 dnl builds a separate set of debugging libraries in addition to the
1361 dnl normal (shared, static) libstdc++ binaries.
1363 dnl --disable-libstdcxx-debug
1364 dnl builds only one (non-debug) version of libstdc++.
1366 dnl --enable-libstdcxx-debug-flags=FLAGS
1367 dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
1369 dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)]
1370 dnl Where DEFAULT is either `yes' or `no'.
1372 AC_DEFUN([GLIBCXX_ENABLE_DEBUG], [
1373 AC_MSG_CHECKING([for additional debug build])
1374 GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library])
1375 AC_MSG_RESULT($enable_libstdcxx_debug)
1376 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes)
1381 dnl Check for explicit debug flags.
1383 dnl --enable-libstdcxx-debug-flags='-O1'
1384 dnl is a general method for passing flags to be used when
1385 dnl building debug libraries with --enable-debug.
1387 dnl --disable-libstdcxx-debug-flags does nothing.
1388 dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
1389 dnl If "default flags" is an empty string, the effect is the same
1390 dnl as --disable or --enable=no.
1392 AC_DEFUN([GLIBCXX_ENABLE_DEBUG_FLAGS], [
1393 GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS],
1394 [pass compiler FLAGS when building debug library],
1395 [case "x$enable_libstdcxx_debug_flags" in
1396 xno | x) enable_libstdcxx_debug_flags= ;;
1398 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
1401 # Option parsed, now set things appropriately
1402 DEBUG_FLAGS="$enable_libstdcxx_debug_flags"
1403 AC_SUBST(DEBUG_FLAGS)
1405 AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS])
1410 dnl Check if the user only wants a freestanding library implementation.
1412 dnl --disable-hosted-libstdcxx will turn off most of the library build,
1413 dnl installing only the headers required by [17.4.1.3] and the language
1414 dnl support library. More than that will be built (to keep the Makefiles
1415 dnl conveniently clean), but not installed.
1418 dnl is_hosted (yes/no)
1421 dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0)
1423 AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [
1424 AC_ARG_ENABLE([hosted-libstdcxx],
1425 AC_HELP_STRING([--disable-hosted-libstdcxx],
1426 [only build freestanding C++ runtime support]),,
1429 enable_hosted_libstdcxx=no
1432 enable_hosted_libstdcxx=yes
1435 if test "$enable_hosted_libstdcxx" = no; then
1436 AC_MSG_NOTICE([Only freestanding libraries will be built])
1440 enable_libstdcxx_pch=no
1445 GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes)
1446 AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define,
1447 [Define to 1 if a full hosted library is built, or 0 if freestanding.])
1452 dnl Check for template specializations for the 'long long' type extension.
1453 dnl The result determines only whether 'long long' I/O is enabled; things
1454 dnl like numeric_limits<> specializations are always available.
1456 dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG
1457 dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined
1458 dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)]
1459 dnl Where DEFAULT is either `yes' or `no'.
1461 AC_DEFUN([GLIBCXX_ENABLE_LONG_LONG], [
1462 GLIBCXX_ENABLE(long-long,$1,,[enables I/O support for 'long long'])
1463 if test $enable_long_long = yes; then
1464 AC_DEFINE(_GLIBCXX_USE_LONG_LONG)
1470 dnl Check to see if building and using a C++ precompiled header can be done.
1472 dnl --enable-libstdcxx-pch=yes
1473 dnl default, this shows intent to use stdc++.h.gch If it looks like it
1474 dnl may work, after some light-hearted attempts to puzzle out compiler
1475 dnl support, flip bits on in include/Makefile.am
1477 dnl --disable-libstdcxx-pch
1478 dnl turns off attempts to use or build stdc++.h.gch.
1481 dnl glibcxx_PCHFLAGS
1483 AC_DEFUN([GLIBCXX_ENABLE_PCH], [
1484 AC_MSG_CHECKING([for enabled PCH])
1485 GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers])
1486 AC_MSG_RESULT([$enable_libstdcxx_pch])
1488 if test $enable_libstdcxx_pch = yes; then
1489 AC_CACHE_CHECK([for compiler with PCH support],
1490 [glibcxx_cv_prog_CXX_pch],
1491 [ac_save_CXXFLAGS="$CXXFLAGS"
1492 CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
1495 echo '#include <math.h>' > conftest.h
1496 if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \
1497 -o conftest.h.gch 1>&5 2>&1 &&
1498 echo '#error "pch failed"' > conftest.h &&
1499 echo '#include "conftest.h"' > conftest.cc &&
1500 $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ;
1502 glibcxx_cv_prog_CXX_pch=yes
1504 glibcxx_cv_prog_CXX_pch=no
1507 CXXFLAGS=$ac_save_CXXFLAGS
1510 enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch
1513 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes)
1514 if test $enable_libstdcxx_pch = yes; then
1515 glibcxx_PCHFLAGS="-include bits/stdc++.h"
1519 AC_SUBST(glibcxx_PCHFLAGS)
1524 dnl Check for exception handling support. If an explicit enable/disable
1525 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1526 dnl target may or may not support call frame exceptions.
1528 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1529 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1530 dnl Neither one forces an attempt at detection.
1533 dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it
1535 AC_DEFUN([GLIBCXX_ENABLE_SJLJ_EXCEPTIONS], [
1536 AC_MSG_CHECKING([for exception model to use])
1539 GLIBCXX_ENABLE(sjlj-exceptions,auto,,
1540 [force use of builtin_setjmp for exceptions],
1541 [permit yes|no|auto])
1543 if test $enable_sjlj_exceptions = auto; then
1544 # Botheration. Now we've got to detect the exception model. Link tests
1545 # against libgcc.a are problematic since we've not been given proper -L
1546 # bits for single-tree newlib and libgloss.
1548 # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
1549 cat > conftest.$ac_ext << EOF
1550 [#]line __oline__ "configure"
1559 old_CXXFLAGS="$CXXFLAGS"
1561 if AC_TRY_EVAL(ac_compile); then
1562 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1563 enable_sjlj_exceptions=yes
1564 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1565 enable_sjlj_exceptions=no
1568 CXXFLAGS="$old_CXXFLAGS"
1572 # This is a tad weird, for hysterical raisins. We have to map enable/disable
1573 # to two different models.
1574 case $enable_sjlj_exceptions in
1576 AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
1577 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1578 ac_exception_model_name=sjlj
1581 ac_exception_model_name="call frame"
1584 AC_MSG_ERROR([unable to detect exception model])
1588 AC_MSG_RESULT($ac_exception_model_name)
1593 dnl Add version tags to symbols in shared library (or not), additionally
1594 dnl marking other symbols as private/local (or not).
1596 dnl --enable-symvers=style adds a version script to the linker call when
1597 dnl creating the shared library. The choice of version script is
1598 dnl controlled by 'style'.
1599 dnl --disable-symvers does not.
1600 dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)]
1601 dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to
1602 dnl choose a default style based on linker characteristics. Passing
1603 dnl 'no' disables versioning.
1605 AC_DEFUN([GLIBCXX_ENABLE_SYMVERS], [
1607 GLIBCXX_ENABLE(symvers,$1,[=STYLE],
1608 [enables symbol versioning of the shared library],
1609 [permit yes|no|gnu])
1611 # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we
1612 # don't know enough about $LD to do tricks...
1613 AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES])
1614 # FIXME The following test is too strict, in theory.
1615 if test $enable_shared = no ||
1617 test x$glibcxx_gnu_ld_version = x; then
1621 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
1622 if test $enable_symvers != no; then
1623 AC_MSG_CHECKING([for shared libgcc])
1624 ac_save_CFLAGS="$CFLAGS"
1626 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no)
1627 CFLAGS="$ac_save_CFLAGS"
1628 if test $glibcxx_shared_libgcc = no; then
1629 cat > conftest.c <<EOF
1630 int main (void) { return 0; }
1633 glibcxx_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
1634 -shared -shared-libgcc -o conftest.so \
1635 conftest.c -v 2>&1 >/dev/null \
1636 | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'`
1638 rm -f conftest.c conftest.so
1639 if test x${glibcxx_libgcc_s_suffix+set} = xset; then
1640 CFLAGS=" -lgcc_s$glibcxx_libgcc_s_suffix"
1641 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes)
1642 CFLAGS="$ac_save_CFLAGS"
1645 AC_MSG_RESULT($glibcxx_shared_libgcc)
1648 # For GNU ld, we need at least this version. The format is described in
1649 # GLIBCXX_CHECK_LINKER_FEATURES above.
1650 glibcxx_min_gnu_ld_version=21400
1651 # XXXXXXXXXXX glibcxx_gnu_ld_version=21390
1653 # Check to see if unspecified "yes" value can win, given results above.
1654 # Change "yes" into either "no" or a style name.
1655 if test $enable_symvers = yes; then
1656 if test $with_gnu_ld = yes &&
1657 test $glibcxx_shared_libgcc = yes;
1659 if test $glibcxx_gnu_ld_version -ge $glibcxx_min_gnu_ld_version ; then
1662 # The right tools, the right setup, but too old. Fallbacks?
1663 AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for)
1664 AC_MSG_WARN(=== full symbol versioning support in this release of GCC.)
1665 AC_MSG_WARN(=== You would need to upgrade your binutils to version)
1666 AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.)
1667 if test $glibcxx_gnu_ld_version -ge 21200 ; then
1668 # Globbing fix is present, proper block support is not.
1669 dnl AC_MSG_WARN([=== Dude, you are soooo close. Maybe we can fake it.])
1670 dnl enable_symvers=???
1671 AC_MSG_WARN([=== Symbol versioning will be disabled.])
1675 AC_MSG_WARN([=== Symbol versioning will be disabled.])
1681 AC_MSG_WARN([=== You have requested some kind of symbol versioning, but])
1682 AC_MSG_WARN([=== either you are not using a supported linker, or you are])
1683 AC_MSG_WARN([=== not building a shared libgcc_s (which is required).])
1684 AC_MSG_WARN([=== Symbol versioning will be disabled.])
1689 # Everything parsed; figure out what file to use.
1690 case $enable_symvers in
1692 SYMVER_MAP=config/linker-map.dummy
1695 SYMVER_MAP=config/linker-map.gnu
1696 AC_DEFINE(_GLIBCXX_SYMVER)
1700 AC_SUBST(SYMVER_MAP)
1701 AC_SUBST(port_specific_symbol_files)
1702 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
1703 AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers)
1708 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1709 dnl We must stage the required headers so that they will be installed
1710 dnl with the library (unlike libgcc, the STL implementation is provided
1711 dnl solely within headers). Since we must not inject random user-space
1712 dnl macro names into user-provided C++ code, we first stage into <file>-in
1713 dnl and process to <file> with an output command. The reason for a two-
1714 dnl stage process here is to correctly handle $srcdir!=$objdir without
1715 dnl having to write complex code (the sed commands to clean the macro
1716 dnl namespace are complex and fragile enough as it is). We must also
1717 dnl add a relative path so that -I- is supported properly.
1720 dnl glibcxx_thread_h
1723 dnl HAVE_GTHR_DEFAULT
1725 AC_DEFUN([GLIBCXX_ENABLE_THREADS], [
1726 AC_MSG_CHECKING([for thread model used by GCC])
1727 target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
1728 AC_MSG_RESULT([$target_thread_file])
1730 if test $target_thread_file != single; then
1731 AC_DEFINE(HAVE_GTHR_DEFAULT)
1734 glibcxx_thread_h=gthr-$target_thread_file.h
1736 dnl Check for __GTHREADS define.
1737 gthread_file=${toplevel_srcdir}/gcc/${glibcxx_thread_h}
1738 if grep __GTHREADS $gthread_file >/dev/null 2>&1 ; then
1744 AC_SUBST(glibcxx_thread_h)
1748 # Check whether LC_MESSAGES is available in <locale.h>.
1749 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1751 # This file file be copied and used freely without restrictions. It can
1752 # be used in projects which are not available under the GNU Public License
1753 # but which still want to provide support for the GNU gettext functionality.
1754 # Please note that the actual code is *not* freely available.
1757 AC_DEFUN([AC_LC_MESSAGES], [
1758 AC_CHECK_HEADER(locale.h, [
1759 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1760 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1761 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1762 if test $ac_cv_val_LC_MESSAGES = yes; then
1763 AC_DEFINE(HAVE_LC_MESSAGES)
1769 sinclude([../libtool.m4])
1770 dnl The lines below arrange for aclocal not to bring an installed
1771 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1772 dnl add a definition of LIBTOOL to Makefile.in.
1773 ifelse(,,,[AC_SUBST(LIBTOOL)
1774 AC_DEFUN([AM_PROG_LIBTOOL])
1775 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1776 AC_DEFUN([AC_PROG_LD])
1779 dnl vim:et:ts=2:sw=2