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)
615 dnl Check for --enable-__cxa_atexit
617 dnl --enable-__cxa_atexit defines _GLIBCXX_USE___CXA_ATEXIT
618 dnl --disable-__cxa_atexit doesn't define _GLIBCXX_USE___CXA_ATEXIT
619 dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)]
620 dnl Where DEFAULT is either `yes' or `no'.
622 AC_DEFUN([GLIBCXX_ENABLE_CXA_ATEXIT], [
623 GLIBCXX_ENABLE(__cxa_atexit,$1,,
624 [Define if __cxa_atexit is to be used instead of atexit.])
625 if test $enable___cxa_atexit = yes; then
626 AC_DEFINE(_GLIBCXX_USE___CXA_ATEXIT)
631 dnl Does any necessary configuration of the testsuite directory. Generates
632 dnl the testsuite_hooks.h header.
634 dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this.
637 dnl enable_abi_check / GLIBCXX_TEST_ABI
638 dnl GLIBCXX_TEST_WCHAR_T
639 dnl GLIBCXX_TEST_THREAD
643 AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [
644 if $GLIBCXX_IS_NATIVE && test $is_hosted = yes; then
645 # Do checks for resource limit functions.
646 GLIBCXX_CHECK_SETRLIMIT
648 # Look for setenv, so that extended locale tests can be performed.
649 GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
651 if test $enable_symvers = no; then
656 enable_abi_check=no ;;
658 enable_abi_check=yes ;;
662 # Only build this as native, since automake does not understand
667 # Export file names for ABI checking.
668 baseline_dir="$glibcxx_srcdir/config/abi/${abi_baseline_pair}\$(MULTISUBDIR)"
669 AC_SUBST(baseline_dir)
671 GLIBCXX_CONDITIONAL(GLIBCXX_TEST_WCHAR_T, test $enable_wchar_t = yes)
672 GLIBCXX_CONDITIONAL(GLIBCXX_TEST_THREAD, test $enable_thread = yes)
673 GLIBCXX_CONDITIONAL(GLIBCXX_TEST_ABI, test $enable_abi_check = yes)
678 dnl Set up *_INCLUDES variables for all sundry Makefile.am's.
682 dnl TOPLEVEL_INCLUDES
684 AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [
685 # Used for every C++ compile we perform.
687 -I$glibcxx_builddir/include/$host_alias \
688 -I$glibcxx_builddir/include \
689 -I$glibcxx_srcdir/libsupc++"
691 # For Canadian crosses, pick this up too.
692 if test $CANADIAN = yes; then
693 GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}"
696 # Stuff in the actual top level. Currently only used by libsupc++ to
697 # get unwind* headers from the gcc dir.
698 #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc -I$(toplevel_srcdir)/include'
699 TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc'
701 # Now, export this to all the little Makefiles....
702 AC_SUBST(GLIBCXX_INCLUDES)
703 AC_SUBST(TOPLEVEL_INCLUDES)
708 dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
709 dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.)
712 dnl OPTIMIZE_CXXFLAGS
715 AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [
716 # Optimization flags that are probably a good idea for thrill-seekers. Just
717 # uncomment the lines below and make, everything else is ready to go...
718 # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
720 AC_SUBST(OPTIMIZE_CXXFLAGS)
722 WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
728 dnl All installation directory information is determined here.
732 dnl glibcxx_prefixdir
733 dnl glibcxx_toolexecdir
734 dnl glibcxx_toolexeclibdir
736 dnl Assumes cross_compiling bits already done, and with_cross_host in
739 AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [
740 glibcxx_toolexecdir=no
741 glibcxx_toolexeclibdir=no
742 glibcxx_prefixdir=$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 $gxx_include_dir = no; then
770 gxx_include_dir='${prefix}'/include/c++/${gcc_version}
773 # Version-specific runtime libs processing.
774 if test $version_specific_libs = yes; then
775 # Need the gcc compiler version to know where to install libraries
776 # and header files if --enable-version-specific-runtime-libs option
777 # is selected. FIXME: these variables are misnamed, there are
778 # no executables installed in _toolexecdir or _toolexeclibdir.
779 if test x"$gxx_include_dir" = x"no"; then
780 gxx_include_dir='${libdir}/gcc/${host_alias}/'$gcc_version/include/c++
782 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
783 glibcxx_toolexeclibdir='${toolexecdir}/'$gcc_version'$(MULTISUBDIR)'
786 # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir
787 # Install a library built with a cross compiler in tooldir, not libdir.
788 if test x"$glibcxx_toolexecdir" = x"no"; then
789 if test -n "$with_cross_host" &&
790 test x"$with_cross_host" != x"no"; then
791 glibcxx_toolexecdir='${exec_prefix}/${host_alias}'
792 glibcxx_toolexeclibdir='${toolexecdir}/lib'
794 glibcxx_toolexecdir='${libdir}/gcc/${host_alias}'
795 glibcxx_toolexeclibdir='${libdir}'
797 multi_os_directory=`$CXX -print-multi-os-directory`
798 case $multi_os_directory in
799 .) ;; # Avoid trailing /.
800 *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;;
804 AC_MSG_CHECKING([for install location])
805 AC_MSG_RESULT($gxx_include_dir)
807 AC_SUBST(glibcxx_prefixdir)
808 AC_SUBST(gxx_include_dir)
809 AC_SUBST(glibcxx_toolexecdir)
810 AC_SUBST(glibcxx_toolexeclibdir)
816 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING)
817 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c)
818 dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER)
820 dnl See docs/html/17_intro/configury.html#enable for documentation.
822 m4_define([GLIBCXX_ENABLE],[dnl
823 m4_define([_g_switch],[--enable-$1])dnl
824 m4_define([_g_help],[AC_HELP_STRING(_g_switch$3,[$4 @<:@default=$2@:>@])])dnl
825 AC_ARG_ENABLE($1,_g_help,
830 m4_bpatsubst([$5],[permit ])) ;;
831 *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;;
832 dnl Idea for future: generate a URL pointing to
833 dnl "onlinedocs/configopts.html#whatever"
840 *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;;
844 [enable_]m4_bpatsubst([$1],-,_)[=][$2])
845 m4_undefine([_g_switch])dnl
846 m4_undefine([_g_help])dnl
851 dnl Check for ISO/IEC 9899:1999 "C99" support.
853 dnl --enable-c99 defines _GLIBCXX_USE_C99
854 dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined
855 dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)]
856 dnl Where DEFAULT is either `yes' or `no'.
857 dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
859 AC_DEFUN([GLIBCXX_ENABLE_C99], [
860 GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support])
865 # Check for the existence of <math.h> functions used if C99 is enabled.
867 AC_MSG_CHECKING([for ISO C99 support in <math.h>])
868 AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
869 AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
870 AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
871 AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
872 AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
873 AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
874 AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
875 AC_TRY_COMPILE([#include <math.h>],
876 [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
877 AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
878 AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
879 AC_TRY_COMPILE([#include <math.h>],
880 [islessgreater(0.0,0.0);],, [ac_c99_math=no])
881 AC_TRY_COMPILE([#include <math.h>],
882 [isunordered(0.0,0.0);],, [ac_c99_math=no])
883 AC_MSG_RESULT($ac_c99_math)
885 if test x"$ac_c99_math" = x"yes"; then
886 AC_DEFINE(_GLIBCXX_USE_C99_MATH)
889 # Check for the existence in <stdio.h> of vscanf, et. al.
891 AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
892 AC_TRY_COMPILE([#include <stdio.h>],
893 [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
894 AC_TRY_COMPILE([#include <stdio.h>
896 void foo(char* fmt, ...)
897 {va_list args; va_start(args, fmt);
898 vfscanf(stderr, "%i", args);}],
899 [],, [ac_c99_stdio=no])
900 AC_TRY_COMPILE([#include <stdio.h>
902 void foo(char* fmt, ...)
903 {va_list args; va_start(args, fmt);
904 vscanf("%i", args);}],
905 [],, [ac_c99_stdio=no])
906 AC_TRY_COMPILE([#include <stdio.h>
908 void foo(char* fmt, ...)
909 {va_list args; va_start(args, fmt);
910 vsnprintf(fmt, 0, "%i", args);}],
911 [],, [ac_c99_stdio=no])
912 AC_TRY_COMPILE([#include <stdio.h>
914 void foo(char* fmt, ...)
915 {va_list args; va_start(args, fmt);
916 vsscanf(fmt, "%i", args);}],
917 [],, [ac_c99_stdio=no])
918 AC_MSG_RESULT($ac_c99_stdio)
920 # Check for the existence in <stdlib.h> of lldiv_t, et. al.
922 AC_MSG_CHECKING([for lldiv_t declaration])
923 AC_CACHE_VAL(ac_c99_lldiv_t, [
924 AC_TRY_COMPILE([#include <stdlib.h>],
926 [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
928 AC_MSG_RESULT($ac_c99_lldiv_t)
930 AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
931 AC_TRY_COMPILE([#include <stdlib.h>],
932 [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
933 AC_TRY_COMPILE([#include <stdlib.h>],
934 [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
935 AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
936 AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
937 AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
938 AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
939 if test x"$ac_c99_lldiv_t" = x"no"; then
942 AC_MSG_RESULT($ac_c99_stdlib)
944 # Check for the existence of <wchar.h> functions used if C99 is enabled.
945 # XXX the wchar.h checks should be rolled into the general C99 bits.
947 AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
948 AC_TRY_COMPILE([#include <wchar.h>],
949 [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
950 AC_TRY_COMPILE([#include <wchar.h>],
951 [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
952 AC_TRY_COMPILE([#include <wchar.h>],
953 [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
954 AC_MSG_RESULT($ac_c99_wchar)
956 AC_MSG_CHECKING([for enabled ISO C99 support])
957 if test x"$ac_c99_math" = x"no" ||
958 test x"$ac_c99_stdio" = x"no" ||
959 test x"$ac_c99_stdlib" = x"no" ||
960 test x"$ac_c99_wchar" = x"no"; then
963 AC_MSG_RESULT($enable_c99)
965 if test x"$ac_99_math" = x"yes"; then
966 AC_DEFINE(_GLIBCXX_USE_C99_MATH)
969 # Option parsed, now set things appropriately
970 if test x"$enable_c99" = x"yes"; then
971 AC_DEFINE(_GLIBCXX_USE_C99)
979 dnl Check for what type of C headers to use.
981 dnl --enable-cheaders= [does stuff].
982 dnl --disable-cheaders [does not do anything, really].
983 dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)]
984 dnl Where DEFAULT is either `c' or `c_std'.
986 AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [
987 GLIBCXX_ENABLE(cheaders,$1,[=KIND],
988 [construct "C" headers for g++], [permit c|c_std])
989 AC_MSG_NOTICE("C" header strategy set to $enable_cheaders)
991 C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders
993 AC_SUBST(C_INCLUDE_DIR)
994 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c)
995 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std)
996 GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes)
1001 dnl Check for which locale library to use. The choice is mapped to
1002 dnl a subdirectory of config/locale.
1004 dnl Default is generic.
1006 AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [
1007 AC_MSG_CHECKING([for C locale to use])
1008 GLIBCXX_ENABLE(clocale,auto,[@<:@=MODEL@:>@],
1009 [use MODEL for target locale package],
1010 [permit generic|gnu|ieee_1003.1-2001|yes|no|auto])
1012 # If they didn't use this option switch, or if they specified --enable
1013 # with no specific model, we'll have to look for one. If they
1014 # specified --disable (???), do likewise.
1015 if test $enable_clocale = no || test $enable_clocale = yes; then
1019 # Either a known package, or "auto"
1020 enable_clocale_flag=$enable_clocale
1022 # Probe for locale support if no specific model is specified.
1023 # Default to "generic".
1024 if test $enable_clocale_flag = auto; then
1025 case ${target_os} in
1026 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
1027 AC_EGREP_CPP([_GLIBCXX_ok], [
1028 #include <features.h>
1029 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1032 ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
1034 # Test for bugs early in glibc-2.2.x series
1035 if test $enable_clocale_flag = gnu; then
1037 #define _GNU_SOURCE 1
1040 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
1041 extern __typeof(newlocale) __newlocale;
1042 extern __typeof(duplocale) __duplocale;
1043 extern __typeof(strcoll_l) __strcoll_l;
1047 const char __one[] = "Äuglein Augmen";
1048 const char __two[] = "Äuglein";
1053 loc = __newlocale(1 << LC_ALL, "de_DE", 0);
1054 loc_dup = __duplocale(loc);
1055 i = __strcoll_l(__one, __two, loc);
1056 j = __strcoll_l(__one, __two, loc_dup);
1060 [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
1061 [enable_clocale_flag=generic])
1064 # ... at some point put __strxfrm_l tests in as well.
1067 enable_clocale_flag=generic
1072 # Deal with gettext issues. Default to not using it (=no) until we detect
1073 # support for it later. Let the user turn it off via --e/d, but let that
1074 # default to on for easier handling.
1077 AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]),
1081 # Set configure bits for specified locale package
1082 case ${enable_clocale_flag} in
1084 AC_MSG_RESULT(generic)
1086 CLOCALE_H=config/locale/generic/c_locale.h
1087 CLOCALE_CC=config/locale/generic/c_locale.cc
1088 CCODECVT_H=config/locale/generic/codecvt_specializations.h
1089 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1090 CCOLLATE_CC=config/locale/generic/collate_members.cc
1091 CCTYPE_CC=config/locale/generic/ctype_members.cc
1092 CMESSAGES_H=config/locale/generic/messages_members.h
1093 CMESSAGES_CC=config/locale/generic/messages_members.cc
1094 CMONEY_CC=config/locale/generic/monetary_members.cc
1095 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1096 CTIME_H=config/locale/generic/time_members.h
1097 CTIME_CC=config/locale/generic/time_members.cc
1098 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1103 # Declare intention to use gettext, and add support for specific
1105 # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT
1108 # Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
1109 AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
1110 if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
1113 # Export the build objects.
1114 for ling in $ALL_LINGUAS; do \
1115 glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \
1116 glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \
1118 AC_SUBST(glibcxx_MOFILES)
1119 AC_SUBST(glibcxx_POFILES)
1121 CLOCALE_H=config/locale/gnu/c_locale.h
1122 CLOCALE_CC=config/locale/gnu/c_locale.cc
1123 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1124 CCODECVT_CC=config/locale/gnu/codecvt_members.cc
1125 CCOLLATE_CC=config/locale/gnu/collate_members.cc
1126 CCTYPE_CC=config/locale/gnu/ctype_members.cc
1127 CMESSAGES_H=config/locale/gnu/messages_members.h
1128 CMESSAGES_CC=config/locale/gnu/messages_members.cc
1129 CMONEY_CC=config/locale/gnu/monetary_members.cc
1130 CNUMERIC_CC=config/locale/gnu/numeric_members.cc
1131 CTIME_H=config/locale/gnu/time_members.h
1132 CTIME_CC=config/locale/gnu/time_members.cc
1133 CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
1136 AC_MSG_RESULT(IEEE 1003.1)
1138 CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
1139 CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
1140 CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
1141 CCODECVT_CC=config/locale/generic/codecvt_members.cc
1142 CCOLLATE_CC=config/locale/generic/collate_members.cc
1143 CCTYPE_CC=config/locale/generic/ctype_members.cc
1144 CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h
1145 CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc
1146 CMONEY_CC=config/locale/generic/monetary_members.cc
1147 CNUMERIC_CC=config/locale/generic/numeric_members.cc
1148 CTIME_H=config/locale/generic/time_members.h
1149 CTIME_CC=config/locale/generic/time_members.cc
1150 CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
1154 # This is where the testsuite looks for locale catalogs, using the
1155 # -DLOCALEDIR define during testsuite compilation.
1156 glibcxx_localedir=${glibcxx_builddir}/po/share/locale
1157 AC_SUBST(glibcxx_localedir)
1159 # A standalone libintl (e.g., GNU libintl) may be in use.
1160 if test $USE_NLS = yes; then
1161 AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no)
1162 AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no)
1164 if test $USE_NLS = yes; then
1165 AC_DEFINE(_GLIBCXX_USE_NLS)
1170 AC_SUBST(CCODECVT_H)
1171 AC_SUBST(CMESSAGES_H)
1172 AC_SUBST(CCODECVT_CC)
1173 AC_SUBST(CCOLLATE_CC)
1175 AC_SUBST(CMESSAGES_CC)
1177 AC_SUBST(CNUMERIC_CC)
1180 AC_SUBST(CLOCALE_CC)
1181 AC_SUBST(CLOCALE_INTERNAL_H)
1186 dnl Check for which std::allocator base class to use. The choice is
1187 dnl mapped from a subdirectory of include/ext.
1191 AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [
1192 AC_MSG_CHECKING([for std::allocator base class to use])
1193 GLIBCXX_ENABLE(libstdcxx-allocator,auto,[=KIND],
1194 [use KIND for target std::allocator base],
1195 [permit new|malloc|mt|bitmap|pool|yes|no|auto])
1197 # If they didn't use this option switch, or if they specified --enable
1198 # with no specific model, we'll have to look for one. If they
1199 # specified --disable (???), do likewise.
1200 if test $enable_libstdcxx_allocator = no ||
1201 test $enable_libstdcxx_allocator = yes;
1203 enable_libstdcxx_allocator=auto
1206 # Either a known package, or "auto". Auto implies the default choice
1207 # for a particular platform.
1208 enable_libstdcxx_allocator_flag=$enable_libstdcxx_allocator
1210 # Probe for host-specific support if no specific model is specified.
1212 if test $enable_libstdcxx_allocator_flag = auto; then
1213 case ${target_os} in
1214 linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu)
1215 enable_libstdcxx_allocator_flag=mt
1218 enable_libstdcxx_allocator_flag=new
1222 AC_MSG_RESULT($enable_libstdcxx_allocator_flag)
1225 # Set configure bits for specified locale package
1226 case ${enable_libstdcxx_allocator_flag} in
1228 ALLOCATOR_H=config/allocator/bitmap_allocator_base.h
1229 ALLOCATOR_NAME=__gnu_cxx::bitmap_allocator
1232 ALLOCATOR_H=config/allocator/malloc_allocator_base.h
1233 ALLOCATOR_NAME=__gnu_cxx::malloc_allocator
1236 ALLOCATOR_H=config/allocator/mt_allocator_base.h
1237 ALLOCATOR_NAME=__gnu_cxx::__mt_alloc
1240 ALLOCATOR_H=config/allocator/new_allocator_base.h
1241 ALLOCATOR_NAME=__gnu_cxx::new_allocator
1244 ALLOCATOR_H=config/allocator/pool_allocator_base.h
1245 ALLOCATOR_NAME=__gnu_cxx::__pool_alloc
1249 AC_SUBST(ALLOCATOR_H)
1250 AC_SUBST(ALLOCATOR_NAME)
1255 dnl Check for whether the Boost-derived checks should be turned on.
1257 dnl --enable-concept-checks turns them on.
1258 dnl --disable-concept-checks leaves them off.
1259 dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
1260 dnl Where DEFAULT is either `yes' or `no'.
1262 AC_DEFUN([GLIBCXX_ENABLE_CONCEPT_CHECKS], [
1263 GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks])
1264 if test $enable_concept_checks = yes; then
1265 AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS)
1271 dnl Check for which I/O library to use: stdio, or something specific.
1273 dnl Default is stdio.
1275 AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [
1276 AC_MSG_CHECKING([for underlying I/O to use])
1277 GLIBCXX_ENABLE(cstdio,stdio,[=PACKAGE],
1278 [use target-specific I/O package], [permit stdio])
1280 # Now that libio has been removed, you can have any color you want as long
1281 # as it's black. This is one big no-op until other packages are added, but
1282 # showing the framework never hurts.
1283 case ${enable_cstdio} in
1285 CSTDIO_H=config/io/c_io_stdio.h
1286 BASIC_FILE_H=config/io/basic_file_stdio.h
1287 BASIC_FILE_CC=config/io/basic_file_stdio.cc
1288 AC_MSG_RESULT(stdio)
1293 AC_SUBST(BASIC_FILE_H)
1294 AC_SUBST(BASIC_FILE_CC)
1299 dnl Check for "unusual" flags to pass to the compiler while building.
1301 dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
1302 dnl experimental flags such as -fpch, -fIMI, -Dfloat=char, etc.
1303 dnl --disable-cxx-flags passes nothing.
1304 dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html
1305 dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html
1306 dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html
1307 dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags)
1308 dnl If "default flags" is an empty string, the effect is the same
1309 dnl as --disable or --enable=no.
1311 AC_DEFUN([GLIBCXX_ENABLE_CXX_FLAGS], [dnl
1312 AC_MSG_CHECKING([for extra compiler flags for building])
1313 GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS],
1314 [pass compiler FLAGS when building library],
1315 [case "x$enable_cxx_flags" in
1316 xno | x) enable_cxx_flags= ;;
1318 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
1321 # Run through flags (either default or command-line) and set anything
1322 # extra (e.g., #defines) that must accompany particular g++ options.
1323 if test -n "$enable_cxx_flags"; then
1324 for f in $enable_cxx_flags; do
1328 *) # and we're trying to pass /what/ exactly?
1329 AC_MSG_ERROR([compiler flags start with a -]) ;;
1334 EXTRA_CXX_FLAGS="$enable_cxx_flags"
1335 AC_MSG_RESULT($EXTRA_CXX_FLAGS)
1336 AC_SUBST(EXTRA_CXX_FLAGS)
1341 dnl Check for wide character support. Has the same effect as the option
1342 dnl in gcc's configure, but in a form that autoconf can mess with.
1344 dnl --enable-c-mbchar requests all the wchar_t stuff.
1345 dnl --disable-c-mbchar doesn't.
1346 dnl + Usage: GLIBCXX_ENABLE_C_MBCHAR[(DEFAULT)]
1347 dnl Where DEFAULT is either `yes' or `no'.
1349 AC_DEFUN([GLIBCXX_ENABLE_C_MBCHAR], [
1350 GLIBCXX_ENABLE(c-mbchar,$1,,[enable multibyte (wide) characters])
1351 # Option parsed, now other scripts can test enable_c_mbchar for yes/no.
1356 dnl Check to see if debugging libraries are to be built.
1358 dnl --enable-libstdcxx-debug
1359 dnl builds a separate set of debugging libraries in addition to the
1360 dnl normal (shared, static) libstdc++ binaries.
1362 dnl --disable-libstdcxx-debug
1363 dnl builds only one (non-debug) version of libstdc++.
1365 dnl --enable-libstdcxx-debug-flags=FLAGS
1366 dnl iff --enable-debug == yes, then use FLAGS to build the debug library.
1368 dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)]
1369 dnl Where DEFAULT is either `yes' or `no'.
1371 AC_DEFUN([GLIBCXX_ENABLE_DEBUG], [
1372 AC_MSG_CHECKING([for additional debug build])
1373 GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library])
1374 AC_MSG_RESULT($enable_libstdcxx_debug)
1375 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes)
1380 dnl Check for explicit debug flags.
1382 dnl --enable-libstdcxx-debug-flags='-O1'
1383 dnl is a general method for passing flags to be used when
1384 dnl building debug libraries with --enable-debug.
1386 dnl --disable-libstdcxx-debug-flags does nothing.
1387 dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
1388 dnl If "default flags" is an empty string, the effect is the same
1389 dnl as --disable or --enable=no.
1391 AC_DEFUN([GLIBCXX_ENABLE_DEBUG_FLAGS], [
1392 GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS],
1393 [pass compiler FLAGS when building debug library],
1394 [case "x$enable_libstdcxx_debug_flags" in
1395 xno | x) enable_libstdcxx_debug_flags= ;;
1397 *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;;
1400 # Option parsed, now set things appropriately
1401 DEBUG_FLAGS="$enable_libstdcxx_debug_flags"
1402 AC_SUBST(DEBUG_FLAGS)
1404 AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS])
1409 dnl Check if the user only wants a freestanding library implementation.
1411 dnl --disable-hosted-libstdcxx will turn off most of the library build,
1412 dnl installing only the headers required by [17.4.1.3] and the language
1413 dnl support library. More than that will be built (to keep the Makefiles
1414 dnl conveniently clean), but not installed.
1417 dnl is_hosted (yes/no)
1420 dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0)
1422 AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [
1423 AC_ARG_ENABLE([hosted-libstdcxx],
1424 AC_HELP_STRING([--disable-hosted-libstdcxx],
1425 [only build freestanding C++ runtime support]),,
1428 enable_hosted_libstdcxx=no
1431 enable_hosted_libstdcxx=yes
1434 if test "$enable_hosted_libstdcxx" = no; then
1435 AC_MSG_NOTICE([Only freestanding libraries will be built])
1439 enable_libstdcxx_pch=no
1444 GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes)
1445 AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define,
1446 [Define to 1 if a full hosted library is built, or 0 if freestanding.])
1451 dnl Check for template specializations for the 'long long' type extension.
1452 dnl The result determines only whether 'long long' I/O is enabled; things
1453 dnl like numeric_limits<> specializations are always available.
1455 dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG
1456 dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined
1457 dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)]
1458 dnl Where DEFAULT is either `yes' or `no'.
1460 AC_DEFUN([GLIBCXX_ENABLE_LONG_LONG], [
1461 GLIBCXX_ENABLE(long-long,$1,,[enables I/O support for 'long long'])
1462 if test $enable_long_long = yes; then
1463 AC_DEFINE(_GLIBCXX_USE_LONG_LONG)
1469 dnl Check to see if building and using a C++ precompiled header can be done.
1471 dnl --enable-libstdcxx-pch=yes
1472 dnl default, this shows intent to use stdc++.h.gch If it looks like it
1473 dnl may work, after some light-hearted attempts to puzzle out compiler
1474 dnl support, flip bits on in include/Makefile.am
1476 dnl --disable-libstdcxx-pch
1477 dnl turns off attempts to use or build stdc++.h.gch.
1480 dnl glibcxx_PCHFLAGS
1482 AC_DEFUN([GLIBCXX_ENABLE_PCH], [
1483 AC_MSG_CHECKING([for enabled PCH])
1484 GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers])
1485 AC_MSG_RESULT([$enable_libstdcxx_pch])
1487 if test $enable_libstdcxx_pch = yes; then
1488 AC_CACHE_CHECK([for compiler with PCH support],
1489 [glibcxx_cv_prog_CXX_pch],
1490 [ac_save_CXXFLAGS="$CXXFLAGS"
1491 CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
1494 echo '#include <math.h>' > conftest.h
1495 if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \
1496 -o conftest.h.gch 1>&5 2>&1 &&
1497 echo '#error "pch failed"' > conftest.h &&
1498 echo '#include "conftest.h"' > conftest.cc &&
1499 $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ;
1501 glibcxx_cv_prog_CXX_pch=yes
1503 glibcxx_cv_prog_CXX_pch=no
1506 CXXFLAGS=$ac_save_CXXFLAGS
1509 enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch
1512 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes)
1513 if test $enable_libstdcxx_pch = yes; then
1514 glibcxx_PCHFLAGS="-include bits/stdc++.h"
1518 AC_SUBST(glibcxx_PCHFLAGS)
1523 dnl Check for exception handling support. If an explicit enable/disable
1524 dnl sjlj exceptions is given, we don't have to detect. Otherwise the
1525 dnl target may or may not support call frame exceptions.
1527 dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
1528 dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
1529 dnl Neither one forces an attempt at detection.
1532 dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it
1534 AC_DEFUN([GLIBCXX_ENABLE_SJLJ_EXCEPTIONS], [
1535 AC_MSG_CHECKING([for exception model to use])
1538 GLIBCXX_ENABLE(sjlj-exceptions,auto,,
1539 [force use of builtin_setjmp for exceptions],
1540 [permit yes|no|auto])
1542 if test $enable_sjlj_exceptions = auto; then
1543 # Botheration. Now we've got to detect the exception model. Link tests
1544 # against libgcc.a are problematic since we've not been given proper -L
1545 # bits for single-tree newlib and libgloss.
1547 # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
1548 cat > conftest.$ac_ext << EOF
1549 [#]line __oline__ "configure"
1558 old_CXXFLAGS="$CXXFLAGS"
1560 if AC_TRY_EVAL(ac_compile); then
1561 if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
1562 enable_sjlj_exceptions=yes
1563 elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
1564 enable_sjlj_exceptions=no
1567 CXXFLAGS="$old_CXXFLAGS"
1571 # This is a tad weird, for hysterical raisins. We have to map enable/disable
1572 # to two different models.
1573 case $enable_sjlj_exceptions in
1575 AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
1576 [Define if the compiler is configured for setjmp/longjmp exceptions.])
1577 ac_exception_model_name=sjlj
1580 ac_exception_model_name="call frame"
1583 AC_MSG_ERROR([unable to detect exception model])
1587 AC_MSG_RESULT($ac_exception_model_name)
1592 dnl Add version tags to symbols in shared library (or not), additionally
1593 dnl marking other symbols as private/local (or not).
1595 dnl --enable-symvers=style adds a version script to the linker call when
1596 dnl creating the shared library. The choice of version script is
1597 dnl controlled by 'style'.
1598 dnl --disable-symvers does not.
1599 dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)]
1600 dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to
1601 dnl choose a default style based on linker characteristics. Passing
1602 dnl 'no' disables versioning.
1604 AC_DEFUN([GLIBCXX_ENABLE_SYMVERS], [
1606 GLIBCXX_ENABLE(symvers,$1,[=STYLE],
1607 [enables symbol versioning of the shared library],
1608 [permit yes|no|gnu])
1610 # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we
1611 # don't know enough about $LD to do tricks...
1612 AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES])
1613 # FIXME The following test is too strict, in theory.
1614 if test $enable_shared = no ||
1616 test x$glibcxx_gnu_ld_version = x; then
1620 # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
1621 if test $enable_symvers != no; then
1622 AC_MSG_CHECKING([for shared libgcc])
1623 ac_save_CFLAGS="$CFLAGS"
1625 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no)
1626 CFLAGS="$ac_save_CFLAGS"
1627 if test $glibcxx_shared_libgcc = no; then
1628 cat > conftest.c <<EOF
1629 int main (void) { return 0; }
1632 glibcxx_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \
1633 -shared -shared-libgcc -o conftest.so \
1634 conftest.c -v 2>&1 >/dev/null \
1635 | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'`
1637 rm -f conftest.c conftest.so
1638 if test x${glibcxx_libgcc_s_suffix+set} = xset; then
1639 CFLAGS=" -lgcc_s$glibcxx_libgcc_s_suffix"
1640 AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes)
1641 CFLAGS="$ac_save_CFLAGS"
1644 AC_MSG_RESULT($glibcxx_shared_libgcc)
1647 # For GNU ld, we need at least this version. The format is described in
1648 # GLIBCXX_CHECK_LINKER_FEATURES above.
1649 glibcxx_min_gnu_ld_version=21400
1650 # XXXXXXXXXXX glibcxx_gnu_ld_version=21390
1652 # Check to see if unspecified "yes" value can win, given results above.
1653 # Change "yes" into either "no" or a style name.
1654 if test $enable_symvers = yes; then
1655 if test $with_gnu_ld = yes &&
1656 test $glibcxx_shared_libgcc = yes;
1658 if test $glibcxx_gnu_ld_version -ge $glibcxx_min_gnu_ld_version ; then
1661 # The right tools, the right setup, but too old. Fallbacks?
1662 AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for)
1663 AC_MSG_WARN(=== full symbol versioning support in this release of GCC.)
1664 AC_MSG_WARN(=== You would need to upgrade your binutils to version)
1665 AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.)
1666 if test $glibcxx_gnu_ld_version -ge 21200 ; then
1667 # Globbing fix is present, proper block support is not.
1668 dnl AC_MSG_WARN([=== Dude, you are soooo close. Maybe we can fake it.])
1669 dnl enable_symvers=???
1670 AC_MSG_WARN([=== Symbol versioning will be disabled.])
1674 AC_MSG_WARN([=== Symbol versioning will be disabled.])
1680 AC_MSG_WARN([=== You have requested some kind of symbol versioning, but])
1681 AC_MSG_WARN([=== either you are not using a supported linker, or you are])
1682 AC_MSG_WARN([=== not building a shared libgcc_s (which is required).])
1683 AC_MSG_WARN([=== Symbol versioning will be disabled.])
1688 # Everything parsed; figure out what file to use.
1689 case $enable_symvers in
1691 SYMVER_MAP=config/linker-map.dummy
1694 SYMVER_MAP=config/linker-map.gnu
1695 AC_DEFINE(_GLIBCXX_SYMVER)
1699 AC_SUBST(SYMVER_MAP)
1700 AC_SUBST(port_specific_symbol_files)
1701 GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
1702 AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers)
1707 dnl Setup to use the gcc gthr.h thread-specific memory and mutex model.
1708 dnl We must stage the required headers so that they will be installed
1709 dnl with the library (unlike libgcc, the STL implementation is provided
1710 dnl solely within headers). Since we must not inject random user-space
1711 dnl macro names into user-provided C++ code, we first stage into <file>-in
1712 dnl and process to <file> with an output command. The reason for a two-
1713 dnl stage process here is to correctly handle $srcdir!=$objdir without
1714 dnl having to write complex code (the sed commands to clean the macro
1715 dnl namespace are complex and fragile enough as it is). We must also
1716 dnl add a relative path so that -I- is supported properly.
1719 dnl glibcxx_thread_h
1722 dnl HAVE_GTHR_DEFAULT
1724 AC_DEFUN([GLIBCXX_ENABLE_THREADS], [
1725 AC_MSG_CHECKING([for thread model used by GCC])
1726 target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
1727 AC_MSG_RESULT([$target_thread_file])
1730 if test $target_thread_file != single; then
1731 AC_DEFINE(HAVE_GTHR_DEFAULT)
1735 glibcxx_thread_h=gthr-$target_thread_file.h
1736 AC_SUBST(glibcxx_thread_h)
1740 # Check whether LC_MESSAGES is available in <locale.h>.
1741 # Ulrich Drepper <drepper@cygnus.com>, 1995.
1743 # This file file be copied and used freely without restrictions. It can
1744 # be used in projects which are not available under the GNU Public License
1745 # but which still want to provide support for the GNU gettext functionality.
1746 # Please note that the actual code is *not* freely available.
1749 AC_DEFUN([AC_LC_MESSAGES], [
1750 AC_CHECK_HEADER(locale.h, [
1751 AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
1752 [AC_TRY_LINK([#include <locale.h>], [return LC_MESSAGES],
1753 ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)])
1754 if test $ac_cv_val_LC_MESSAGES = yes; then
1755 AC_DEFINE(HAVE_LC_MESSAGES)
1761 sinclude([../libtool.m4])
1762 dnl The lines below arrange for aclocal not to bring an installed
1763 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
1764 dnl add a definition of LIBTOOL to Makefile.in.
1765 ifelse(,,,[AC_SUBST(LIBTOOL)
1766 AC_DEFUN([AM_PROG_LIBTOOL])
1767 AC_DEFUN([AC_LIBTOOL_DLOPEN])
1768 AC_DEFUN([AC_PROG_LD])
1771 dnl vim:et:ts=2:sw=2