X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=libstdc%2B%2B-v3%2Facinclude.m4;h=e1712b77d804ee1144ba1a596b807133c8cd77ed;hb=857d9b7bdf139c12a8bf7483f712f59cf047c698;hp=4dc38b883ac8c7e2479417fc605f929c774b5cc0;hpb=5d89ab686e3336d8b43915f8cdba9459ea102289;p=pf3gnuchains%2Fgcc-fork.git diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index 4dc38b883ac..e1712b77d80 100644 --- a/libstdc++-v3/acinclude.m4 +++ b/libstdc++-v3/acinclude.m4 @@ -49,7 +49,7 @@ AC_DEFUN([GLIBCXX_CONFIGURE], [ # Keep these sync'd with the list in Makefile.am. The first provides an # expandable list at autoconf time; the second provides an expandable list # (i.e., shell variable) at configure time. - m4_define([glibcxx_SUBDIRS],[include libmath libsupc++ src po testsuite]) + m4_define([glibcxx_SUBDIRS],[include libmath libsupc++ src doc po testsuite]) SUBDIRS='glibcxx_SUBDIRS' # These need to be absolute paths, yet at the same time need to @@ -170,8 +170,8 @@ AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [ # Check for -ffunction-sections -fdata-sections AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) - CXXFLAGS='-Werror -ffunction-sections -fdata-sections' - AC_TRY_COMPILE(, [int foo;], [ac_fdsections=yes], [ac_fdsections=no]) + CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections' + AC_TRY_COMPILE([int foo; void bar() { };],, [ac_fdsections=yes], [ac_fdsections=no]) if test "$ac_test_CXXFLAGS" = set; then CXXFLAGS="$ac_save_CXXFLAGS" else @@ -200,6 +200,7 @@ dnl OPT_LDFLAGS='-Wl,-O1' and '-z,relro' if possible dnl LD (as a side effect of testing) dnl Sets: dnl with_gnu_ld +dnl glibcxx_ld_is_gold (set to "no" or "yes") dnl glibcxx_gnu_ld_version (possibly) dnl dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will @@ -231,29 +232,42 @@ AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [ # Start by getting the version number. I think the libtool test already # does some of this, but throws away the result. - AC_MSG_CHECKING([for ld version]) - changequote(,) - ldver=`$LD --version 2>/dev/null | head -1 | \ - sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'` - changequote([,]) - glibcxx_gnu_ld_version=`echo $ldver | \ - $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` - AC_MSG_RESULT($glibcxx_gnu_ld_version) + glibcxx_ld_is_gold=no + if test x"$with_gnu_ld" = x"yes"; then + AC_MSG_CHECKING([for ld version]) + changequote(,) + if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then + glibcxx_ld_is_gold=yes + fi + ldver=`$LD --version 2>/dev/null | head -1 | \ + sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'` + changequote([,]) + glibcxx_gnu_ld_version=`echo $ldver | \ + $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'` + AC_MSG_RESULT($glibcxx_gnu_ld_version) + fi # Set --gc-sections. - glibcxx_gcsections_min_ld=21602 - if test x"$with_gnu_ld" = x"yes" && + glibcxx_have_gc_sections=no + if test "$glibcxx_ld_is_gold" = "yes"; then + if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then + glibcxx_have_gc_sections=yes + fi + else + glibcxx_gcsections_min_ld=21602 + if test x"$with_gnu_ld" = x"yes" && test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then - + glibcxx_have_gc_sections=yes + fi + fi + if test "$glibcxx_have_gc_sections" = "yes"; then # Sufficiently young GNU ld it is! Joy and bunny rabbits! # NB: This flag only works reliably after 2.16.1. Configure tests # for this are difficult, so hard wire a value that should work. - # All these tests are for C++, but run with the "C" compiler driver. - # Need to do this so that g++ won't try to link in libstdc++/libsupc++. ac_test_CFLAGS="${CFLAGS+set}" ac_save_CFLAGS="$CFLAGS" - CFLAGS='-x c++ -Wl,--gc-sections' + CFLAGS='-Wl,--gc-sections' # Check for -Wl,--gc-sections AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) @@ -308,53 +322,6 @@ AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [ dnl -dnl Check to see if this target can enable the iconv specializations. -dnl If --disable-c-mbchar was given, no wchar_t specialization is enabled. -dnl (This must have been previously checked, along with the rest of C99 -dnl support.) By default, iconv support is disabled. -dnl -dnl Defines: -dnl _GLIBCXX_USE_ICONV if all the bits are found. -dnl Substs: -dnl LIBICONV to a -l string containing the iconv library, if needed. -dnl -AC_DEFUN([GLIBCXX_CHECK_ICONV_SUPPORT], [ - - enable_iconv=no - # Only continue checking if the ISO C99 headers exist and support is on. - if test x"$enable_wchar_t" = xyes; then - - # Use iconv for wchar_t to char conversions. As such, check for - # X/Open Portability Guide, version 2 features (XPG2). - AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no) - AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no) - - # Check for existence of libiconv.a providing XPG2 wchar_t support. - AC_CHECK_LIB(iconv, iconv, LIBICONV="-liconv") - ac_save_LIBS="$LIBS" - LIBS="$LIBS $LIBICONV" - AC_SUBST(LIBICONV) - - AC_CHECK_FUNCS([iconv_open iconv_close iconv nl_langinfo], - [ac_XPG2funcs=yes], [ac_XPG2funcs=no]) - - LIBS="$ac_save_LIBS" - - if test x"$ac_has_iconv_h" = xyes && - test x"$ac_has_langinfo_h" = xyes && - test x"$ac_XPG2funcs" = xyes; - then - AC_DEFINE([_GLIBCXX_USE_ICONV],1, - [Define if iconv and related functions exist and are usable.]) - enable_iconv=yes - fi - fi - AC_MSG_CHECKING([for enabled iconv specializations]) - AC_MSG_RESULT($enable_iconv) -]) - - -dnl dnl Check for headers for, and arguments to, the setrlimit() function. dnl Used only in testsuite_hooks.h. Called from GLIBCXX_CONFIGURE_TESTSUITE. dnl @@ -653,8 +620,8 @@ dnl AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [ # Optimization flags that are probably a good idea for thrill-seekers. Just # uncomment the lines below and make, everything else is ready to go... + # Alternatively OPTIMIZE_CXXFLAGS can be set in configure.host. # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc - OPTIMIZE_CXXFLAGS= AC_SUBST(OPTIMIZE_CXXFLAGS) WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual' @@ -674,6 +641,8 @@ dnl dnl Assumes cross_compiling bits already done, and with_cross_host in dnl particular. dnl +dnl This logic must match gcc/configure.ac's setting of gcc_gxx_include_dir. +dnl config/gxx-include-dir.m4 must be kept consistant with this as well. AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [ glibcxx_toolexecdir=no glibcxx_toolexeclibdir=no @@ -705,7 +674,13 @@ AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [ # Default case for install directory for include files. if test $version_specific_libs = no && test $gxx_include_dir = no; then - gxx_include_dir='${prefix}/include/c++/${gcc_version}' + gxx_include_dir='include/c++/${gcc_version}' + if test -n "$with_cross_host" && + test x"$with_cross_host" != x"no"; then + gxx_include_dir='${prefix}/${target_alias}/'"$gxx_include_dir" + else + gxx_include_dir='${prefix}/'"$gxx_include_dir" + fi fi # Version-specific runtime libs processing. @@ -797,41 +772,54 @@ dnl AC_DEFUN([GLIBCXX_ENABLE_C99], [ GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support]) - # Test wchar.h for mbstate_t, which is needed for char_traits and fpos - # even if C99 support is turned off. - AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) - AC_MSG_CHECKING([for mbstate_t]) - AC_TRY_COMPILE([#include ], - [mbstate_t teststate;], - have_mbstate_t=yes, have_mbstate_t=no) - AC_MSG_RESULT($have_mbstate_t) - if test x"$have_mbstate_t" = xyes; then - AC_DEFINE(HAVE_MBSTATE_T,1,[Define if mbstate_t exists in wchar.h.]) - fi - if test x"$enable_c99" = x"yes"; then AC_LANG_SAVE AC_LANG_CPLUSPLUS + # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__ + # undefined and fake C99 facilities - like pre-standard snprintf - may be + # spuriously enabled. + # Long term, -std=c++0x could be even better, could manage to explicitely + # request C99 facilities to the underlying C headers. + ac_save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -std=c++98" + ac_save_LIBS="$LIBS" + ac_save_gcc_no_link="$gcc_no_link" + + if test x$gcc_no_link != xyes; then + # Use -fno-exceptions to that the C driver can link these tests without + # hitting undefined references to personality routines. + CXXFLAGS="$CXXFLAGS -fno-exceptions" + AC_CHECK_LIB(m, sin, [ + LIBS="$LIBS -lm" + ], [ + # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK + gcc_no_link=yes + ]) + fi + # Check for the existence of functions used if C99 is enabled. AC_MSG_CHECKING([for ISO C99 support in ]) AC_CACHE_VAL(ac_c99_math, [ - AC_TRY_COMPILE([#include ], - [fpclassify(0.0); - isfinite(0.0); - isinf(0.0); - isnan(0.0); - isnormal(0.0); - signbit(0.0); - isgreater(0.0,0.0); - isgreaterequal(0.0,0.0); - isless(0.0,0.0); - islessequal(0.0,0.0); - islessgreater(0.0,0.0); - islessgreater(0.0,0.0); - isunordered(0.0,0.0); - ],[ac_c99_math=yes], [ac_c99_math=no]) + GCC_TRY_COMPILE_OR_LINK( + [#include + volatile double d1, d2; + volatile int i;], + [i = fpclassify(d1); + i = isfinite(d1); + i = isinf(d1); + i = isnan(d1); + i = isnormal(d1); + i = signbit(d1); + i = isgreater(d1, d2); + i = isgreaterequal(d1, d2); + i = isless(d1, d2); + i = islessequal(d1, d2); + i = islessgreater(d1, d2); + i = islessgreater(d1, d2); + i = isunordered(d1, d2); + ],[ac_c99_math=yes], [ac_c99_math=no]) ]) AC_MSG_RESULT($ac_c99_math) if test x"$ac_c99_math" = x"yes"; then @@ -844,51 +832,59 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [ # This is necessary even though libstdc++ uses the builtin versions # of these functions, because if the builtin cannot be used, a reference # to the library function is emitted. + AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no) AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) ac_c99_complex=no; if test x"$ac_has_complex_h" = x"yes"; then AC_MSG_CHECKING([for ISO C99 support in ]) - AC_TRY_COMPILE([#include ], - [typedef __complex__ float float_type; float_type tmpf; - cabsf(tmpf); - cargf(tmpf); - ccosf(tmpf); - ccoshf(tmpf); - cexpf(tmpf); - clogf(tmpf); - csinf(tmpf); - csinhf(tmpf); - csqrtf(tmpf); - ctanf(tmpf); - ctanhf(tmpf); - cpowf(tmpf, tmpf); - typedef __complex__ double double_type; double_type tmpd; - cabs(tmpd); - carg(tmpd); - ccos(tmpd); - ccosh(tmpd); - cexp(tmpd); - clog(tmpd); - csin(tmpd); - csinh(tmpd); - csqrt(tmpd); - ctan(tmpd); - ctanh(tmpd); - cpow(tmpd, tmpd); - typedef __complex__ long double ld_type; ld_type tmpld; - cabsl(tmpld); - cargl(tmpld); - ccosl(tmpld); - ccoshl(tmpld); - cexpl(tmpld); - clogl(tmpld); - csinl(tmpld); - csinhl(tmpld); - csqrtl(tmpld); - ctanl(tmpld); - ctanhl(tmpld); - cpowl(tmpld, tmpld); - ],[ac_c99_complex=yes], [ac_c99_complex=no]) + GCC_TRY_COMPILE_OR_LINK( + [#include + typedef __complex__ float float_type; + typedef __complex__ double double_type; + typedef __complex__ long double ld_type; + volatile float_type tmpf; + volatile double_type tmpd; + volatile ld_type tmpld; + volatile float f; + volatile double d; + volatile long double ld;], + [f = cabsf(tmpf); + f = cargf(tmpf); + tmpf = ccosf(tmpf); + tmpf = ccoshf(tmpf); + tmpf = cexpf(tmpf); + tmpf = clogf(tmpf); + tmpf = csinf(tmpf); + tmpf = csinhf(tmpf); + tmpf = csqrtf(tmpf); + tmpf = ctanf(tmpf); + tmpf = ctanhf(tmpf); + tmpf = cpowf(tmpf, tmpf); + d = cabs(tmpd); + d = carg(tmpd); + tmpd = ccos(tmpd); + tmpd = ccosh(tmpd); + tmpd = cexp(tmpd); + tmpd = clog(tmpd); + tmpd = csin(tmpd); + tmpd = csinh(tmpd); + tmpd = csqrt(tmpd); + tmpd = ctan(tmpd); + tmpd = ctanh(tmpd); + tmpd = cpow(tmpd, tmpd); + ld = cabsl(tmpld); + ld = cargl(tmpld); + tmpld = ccosl(tmpld); + tmpld = ccoshl(tmpld); + tmpld = cexpl(tmpld); + tmpld = clogl(tmpld); + tmpld = csinl(tmpld); + tmpld = csinhl(tmpld); + tmpld = csqrtl(tmpld); + tmpld = ctanl(tmpld); + tmpld = ctanhl(tmpld); + tmpld = cpowl(tmpld, tmpld); + ],[ac_c99_complex=yes], [ac_c99_complex=no]) fi AC_MSG_RESULT($ac_c99_complex) if test x"$ac_c99_complex" = x"yes"; then @@ -901,106 +897,57 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [ # Check for the existence in of vscanf, et. al. AC_MSG_CHECKING([for ISO C99 support in ]) AC_CACHE_VAL(ac_c99_stdio, [ - AC_TRY_COMPILE([#include - #include - void foo(char* fmt, ...) - { - va_list args; va_start(args, fmt); - vfscanf(stderr, "%i", args); - vscanf("%i", args); - vsnprintf(fmt, 0, "%i", args); - vsscanf(fmt, "%i", args); - }], - [snprintf("12", 0, "%i");], - [ac_c99_stdio=yes], [ac_c99_stdio=no]) + GCC_TRY_COMPILE_OR_LINK( + [#include + #include + void foo(char* fmt, ...) + { + va_list args; va_start(args, fmt); + vfscanf(stderr, "%i", args); + vscanf("%i", args); + vsnprintf(fmt, 0, "%i", args); + vsscanf(fmt, "%i", args); + }], + [snprintf("12", 0, "%i");], + [ac_c99_stdio=yes], [ac_c99_stdio=no]) ]) AC_MSG_RESULT($ac_c99_stdio) # Check for the existence in of lldiv_t, et. al. AC_MSG_CHECKING([for ISO C99 support in ]) AC_CACHE_VAL(ac_c99_stdlib, [ - AC_TRY_COMPILE([#include ], - [char* tmp; - strtof("gnu", &tmp); - strtold("gnu", &tmp); - strtoll("gnu", &tmp, 10); - strtoull("gnu", &tmp, 10); - llabs(10); - lldiv(10,1); - atoll("10"); - _Exit(0); - lldiv_t mydivt;],[ac_c99_stdlib=yes], [ac_c99_stdlib=no]) + GCC_TRY_COMPILE_OR_LINK( + [#include + volatile float f; + volatile long double ld; + volatile unsigned long long ll; + lldiv_t mydivt;], + [char* tmp; + f = strtof("gnu", &tmp); + ld = strtold("gnu", &tmp); + ll = strtoll("gnu", &tmp, 10); + ll = strtoull("gnu", &tmp, 10); + ll = llabs(10); + mydivt = lldiv(10,1); + ll = mydivt.quot; + ll = mydivt.rem; + ll = atoll("10"); + _Exit(0); + ],[ac_c99_stdlib=yes], [ac_c99_stdlib=no]) ]) AC_MSG_RESULT($ac_c99_stdlib) - # Check for the existence in of wcstoull, WEOF, etc. - AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) + # Check for the existence in of wcstold, etc. ac_c99_wchar=no; if test x"$ac_has_wchar_h" = xyes && test x"$ac_has_wctype_h" = xyes; then + AC_MSG_CHECKING([for ISO C99 support in ]) AC_TRY_COMPILE([#include - #include - wint_t i; - long l = WEOF; - long j = WCHAR_MIN; - long k = WCHAR_MAX; namespace test { - using ::btowc; - using ::fgetwc; - using ::fgetws; - using ::fputwc; - using ::fputws; - using ::fwide; - using ::fwprintf; - using ::fwscanf; - using ::getwc; - using ::getwchar; - using ::mbrlen; - using ::mbrtowc; - using ::mbsinit; - using ::mbsrtowcs; - using ::putwc; - using ::putwchar; - using ::swprintf; - using ::swscanf; - using ::ungetwc; - using ::vfwprintf; - using ::vswprintf; - using ::vwprintf; - using ::wcrtomb; - using ::wcscat; - using ::wcschr; - using ::wcscmp; - using ::wcscoll; - using ::wcscpy; - using ::wcscspn; - using ::wcsftime; - using ::wcslen; - using ::wcsncat; - using ::wcsncmp; - using ::wcsncpy; - using ::wcspbrk; - using ::wcsrchr; - using ::wcsrtombs; - using ::wcsspn; - using ::wcsstr; - using ::wcstod; - using ::wcstok; - using ::wcstol; using ::wcstold; using ::wcstoll; - using ::wcstoul; using ::wcstoull; - using ::wcsxfrm; - using ::wctob; - using ::wmemchr; - using ::wmemcmp; - using ::wmemcpy; - using ::wmemmove; - using ::wmemset; - using ::wprintf; - using ::wscanf; } ],[],[ac_c99_wchar=yes], [ac_c99_wchar=no]) @@ -1031,7 +978,6 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [ [AC_DEFINE(HAVE_ISWBLANK,1, [Defined if iswblank exists.])],[]) - AC_MSG_CHECKING([for ISO C99 support in ]) AC_MSG_RESULT($ac_c99_wchar) fi @@ -1048,6 +994,9 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [ , , and can be used or exposed.]) fi + gcc_no_link="$ac_save_gcc_no_link" + LIBS="$ac_save_LIBS" + CXXFLAGS="$ac_save_CXXFLAGS" AC_LANG_RESTORE fi @@ -1065,6 +1014,11 @@ AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [ AC_LANG_SAVE AC_LANG_CPLUSPLUS + # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__ + # undefined and fake C99 facilities may be spuriously enabled. + ac_save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -std=c++98" + # Check for the existence of complex math functions used # by tr1/complex. AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) @@ -1194,7 +1148,9 @@ AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [ AC_MSG_CHECKING([for ISO C99 support to TR1 in ]) AC_CACHE_VAL(ac_c99_math_tr1, [ AC_TRY_COMPILE([#include ], - [acosh(0.0); + [typedef double_t my_double_t; + typedef float_t my_float_t; + acosh(0.0); acoshf(0.0f); acoshl(0.0l); asinh(0.0); @@ -1333,9 +1289,232 @@ AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [ # Check for the existence of the header. AC_CHECK_HEADERS(stdbool.h) + CXXFLAGS="$ac_save_CXXFLAGS" AC_LANG_RESTORE ]) +dnl +dnl Check whether "dev/random" and "dev/urandom" are available for the +dnl random_device of "TR1" (Chapter 5.1, "Random number generation"). +dnl +AC_DEFUN([GLIBCXX_CHECK_RANDOM_TR1], [ + + AC_MSG_CHECKING([for "dev/random" and "dev/urandom" for TR1 random_device]) + AC_CACHE_VAL(ac_random_tr1, [ + AC_TRY_RUN([#include + int main() + { + return !(fopen("/dev/random", "r") + && fopen("/dev/urandom", "r")); + } + ], + [ac_random_tr1=yes], [ac_random_tr1=no], + [ac_random_tr1=no]) + ]) + AC_MSG_RESULT($ac_random_tr1) + if test x"$ac_random_tr1" = x"yes"; then + AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1, + [Define if dev/random and dev/urandom are available for + the random_device of TR1 (Chapter 5.1).]) + fi + +]) + +dnl +dnl Check whether macros, etc are present for +dnl +AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [ + + AC_MSG_CHECKING([for EOWNERDEAD]) + AC_CACHE_VAL(ac_system_error1, [ + AC_TRY_COMPILE([#include ], [ int i = EOWNERDEAD; ], + [ac_system_error1=yes], [ac_system_error1=no]) + ]) + AC_MSG_RESULT($ac_system_error1) + if test x"$ac_system_error1" = x"yes"; then + AC_DEFINE(HAVE_EOWNERDEAD, 1, [Define if EOWNERDEAD exists.]) + fi + + AC_MSG_CHECKING([for ENOTRECOVERABLE]) + AC_CACHE_VAL(ac_system_error2, [ + AC_TRY_COMPILE([#include ], [ int i = ENOTRECOVERABLE; ], + [ac_system_error2=yes], [ac_system_error2=no]) + ]) + AC_MSG_RESULT($ac_system_error2) + if test x"$ac_system_error2" = x"yes"; then + AC_DEFINE(HAVE_ENOTRECOVERABLE, 1, [Define if ENOTRECOVERABLE exists.]) + fi + + AC_MSG_CHECKING([for ENOLINK]) + AC_CACHE_VAL(ac_system_error3, [ + AC_TRY_COMPILE([#include ], [ int i = ENOLINK; ], + [ac_system_error3=yes], [ac_system_error3=no]) + ]) + AC_MSG_RESULT($ac_system_error3) + if test x"$ac_system_error3" = x"yes"; then + AC_DEFINE(HAVE_ENOLINK, 1, [Define if ENOLINK exists.]) + fi + + AC_MSG_CHECKING([for EPROTO]) + AC_CACHE_VAL(ac_system_error_4, [ + AC_TRY_COMPILE([#include ], [ int i = EPROTO; ], + [ac_system_error_4=yes], [ac_system_error_4=no]) + ]) + AC_MSG_RESULT($ac_system_error_4) + if test x"$ac_system_error_4" = x"yes"; then + AC_DEFINE(HAVE_EPROTO, 1, [Define if EPROTO exists.]) + fi + + AC_MSG_CHECKING([for ENODATA]) + AC_CACHE_VAL(ac_system_error_5, [ + AC_TRY_COMPILE([#include ], [ int i = ENODATA; ], + [ac_system_error_5=yes], [ac_system_error_5=no]) + ]) + AC_MSG_RESULT($ac_system_error_5) + if test x"$ac_system_error_5" = x"yes"; then + AC_DEFINE(HAVE_ENODATA, 1, [Define if ENODATA exists.]) + fi + + AC_MSG_CHECKING([for ENOSR]) + AC_CACHE_VAL(ac_system_error_6, [ + AC_TRY_COMPILE([#include ], [ int i = ENOSR; ], + [ac_system_error_6=yes], [ac_system_error_6=no]) + ]) + AC_MSG_RESULT($ac_system_error_6) + if test x"$ac_system_error_6" = x"yes"; then + AC_DEFINE(HAVE_ENOSR, 1, [Define if ENOSR exists.]) + fi + + AC_MSG_CHECKING([for ENOSTR]) + AC_CACHE_VAL(ac_system_error_7, [ + AC_TRY_COMPILE([#include ], [ int i = ENOSTR; ], + [ac_system_error_7=yes], [ac_system_error_7=no]) + ]) + AC_MSG_RESULT($ac_system_error_7) + if test x"$ac_system_error_7" = x"yes"; then + AC_DEFINE(HAVE_ENOSTR, 1, [Define if ENOSTR exists.]) + fi + + AC_MSG_CHECKING([for ETIME]) + AC_CACHE_VAL(ac_system_error_8, [ + AC_TRY_COMPILE([#include ], [ int i = ETIME; ], + [ac_system_error_8=yes], [ac_system_error_8=no]) + ]) + AC_MSG_RESULT($ac_system_error_8) + if test x"$ac_system_error_8" = x"yes"; then + AC_DEFINE(HAVE_ETIME, 1, [Define if ETIME exists.]) + fi + + AC_MSG_CHECKING([for sys_nerr]) + AC_CACHE_VAL(ac_system_error9, [ + AC_TRY_COMPILE([#include ], [ int i = sys_nerr; ], + [ac_system_error9=yes], [ac_system_error9=no]) + ]) + AC_MSG_RESULT($ac_system_error9) + if test x"$ac_system_error9" = x"yes"; then + AC_DEFINE(HAVE_SYS_NERR, 1, [Define if sys_nerr exists.]) + fi + + AC_MSG_CHECKING([for EBADMSG]) + AC_CACHE_VAL(ac_system_error_10, [ + AC_TRY_COMPILE([#include ], [ int i = EBADMSG; ], + [ac_system_error_10=yes], [ac_system_error_10=no]) + ]) + AC_MSG_RESULT($ac_system_error_10) + if test x"$ac_system_error_10" = x"yes"; then + AC_DEFINE(HAVE_EBADMSG, 1, [Define if EBADMSG exists.]) + fi + + AC_MSG_CHECKING([for ECANCELED]) + AC_CACHE_VAL(ac_system_error_11, [ + AC_TRY_COMPILE([#include ], [ int i = ECANCELED; ], + [ac_system_error_11=yes], [ac_system_error_11=no]) + ]) + AC_MSG_RESULT($ac_system_error_11) + if test x"$ac_system_error_11" = x"yes"; then + AC_DEFINE(HAVE_ECANCELED, 1, [Define if ECANCELED exists.]) + fi + + AC_MSG_CHECKING([for EOVERFLOW]) + AC_CACHE_VAL(ac_system_error_12, [ + AC_TRY_COMPILE([#include ], [ int i = EOVERFLOW; ], + [ac_system_error_12=yes], [ac_system_error_12=no]) + ]) + AC_MSG_RESULT($ac_system_error_12) + if test x"$ac_system_error_12" = x"yes"; then + AC_DEFINE(HAVE_EOVERFLOW, 1, [Define if EOVERFLOW exists.]) + fi + + AC_MSG_CHECKING([for ENOTSUP]) + AC_CACHE_VAL(ac_system_error_13, [ + AC_TRY_COMPILE([#include ], [ int i = ENOTSUP; ], + [ac_system_error_13=yes], [ac_system_error_13=no]) + ]) + AC_MSG_RESULT($ac_system_error_13) + if test x"$ac_system_error_13" = x"yes"; then + AC_DEFINE(HAVE_ENOTSUP, 1, [Define if ENOTSUP exists.]) + fi + + AC_MSG_CHECKING([for EIDRM]) + AC_CACHE_VAL(ac_system_error_14, [ + AC_TRY_COMPILE([#include ], [ int i = EIDRM; ], + [ac_system_error_14=yes], [ac_system_error_14=no]) + ]) + AC_MSG_RESULT($ac_system_error_14) + if test x"$ac_system_error_14" = x"yes"; then + AC_DEFINE(HAVE_EIDRM, 1, [Define if EIDRM exists.]) + fi + + AC_MSG_CHECKING([for ETXTBSY]) + AC_CACHE_VAL(ac_system_error_15, [ + AC_TRY_COMPILE([#include ], [ int i = ETXTBSY; ], + [ac_system_error_15=yes], [ac_system_error_15=no]) + ]) + AC_MSG_RESULT($ac_system_error_15) + if test x"$ac_system_error_15" = x"yes"; then + AC_DEFINE(HAVE_ETXTBSY, 1, [Define if ETXTBSY exists.]) + fi +]) + +dnl +dnl Check whether C++200x's standard layout types are supported. +dnl +AC_DEFUN([GLIBCXX_CHECK_STANDARD_LAYOUT], [ + + AC_MSG_CHECKING([for ISO C++200x standard layout type support]) + AC_CACHE_VAL(ac_standard_layout, [ + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + ac_test_CXXFLAGS="${CXXFLAGS+set}" + ac_save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS='-std=gnu++0x' + + AC_TRY_COMPILE([struct b + { + bool t; + + // Need standard layout relaxation from POD + private: + b& operator=(const b&); + b(const b&); + }; + + int main() + { + b tst1 = { false }; + return 0; + }],, + [ac_standard_layout=yes], [ac_standard_layout=no]) + + CXXFLAGS="$ac_save_CXXFLAGS" + AC_LANG_RESTORE + ]) + AC_MSG_RESULT($ac_standard_layout) + if test x"$ac_standard_layout" = x"yes"; then + AC_DEFINE(_GLIBCXX_USE_STANDARD_LAYOUT, 1, + [Define if standard layout types are supported in C++200x.]) + fi +]) dnl dnl Check for what type of C headers to use. @@ -1343,19 +1522,30 @@ dnl dnl --enable-cheaders= [does stuff]. dnl --disable-cheaders [does not do anything, really]. dnl + Usage: GLIBCXX_ENABLE_CHEADERS[(DEFAULT)] -dnl Where DEFAULT is either `c' or `c_std'. +dnl Where DEFAULT is either 'c' or 'c_std' or 'c_global'. dnl AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [ GLIBCXX_ENABLE(cheaders,$1,[=KIND], - [construct "C" headers for g++], [permit c|c_std]) + [construct "C" headers for g++], [permit c|c_std|c_global]) AC_MSG_NOTICE("C" header strategy set to $enable_cheaders) C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders + # Allow overrides to configure.host here. + if test $enable_cheaders = c_global; then + c_compatibility=yes + fi + + if test $enable_cheaders = c_global || test $enable_cheaders = c_std; then + c_extra=yes + fi + AC_SUBST(C_INCLUDE_DIR) GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c) GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std) + GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_GLOBAL, test $enable_cheaders = c_global) GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes) + GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_EXTRA, test $c_extra = yes) ]) @@ -1366,64 +1556,31 @@ dnl dnl Default is generic. dnl AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [ - AC_MSG_CHECKING([for C locale to use]) GLIBCXX_ENABLE(clocale,auto,[@<:@=MODEL@:>@], [use MODEL for target locale package], [permit generic|gnu|ieee_1003.1-2001|yes|no|auto]) + + # Deal with gettext issues. Default to not using it (=no) until we detect + # support for it later. Let the user turn it off via --e/d, but let that + # default to on for easier handling. + USE_NLS=no + AC_ARG_ENABLE(nls, + AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]), + [], + [enable_nls=yes]) - # If they didn't use this option switch, or if they specified --enable - # with no specific model, we'll have to look for one. If they - # specified --disable (???), do likewise. + # Either a known packaage, or "auto" if test $enable_clocale = no || test $enable_clocale = yes; then enable_clocale=auto fi - - # Either a known package, or "auto" enable_clocale_flag=$enable_clocale - # Probe for locale support if no specific model is specified. + # Probe for locale model to use if none specified. # Default to "generic". if test $enable_clocale_flag = auto; then case ${target_os} in linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu) - AC_EGREP_CPP([_GLIBCXX_ok], [ - #include - #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) - _GLIBCXX_ok - #endif - ], enable_clocale_flag=gnu, enable_clocale_flag=generic) - - # Test for bugs early in glibc-2.2.x series - if test $enable_clocale_flag = gnu; then - AC_TRY_RUN([ - #define _GNU_SOURCE 1 - #include - #include - #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) - extern __typeof(newlocale) __newlocale; - extern __typeof(duplocale) __duplocale; - extern __typeof(strcoll_l) __strcoll_l; - #endif - int main() - { - const char __one[] = "Äuglein Augmen"; - const char __two[] = "Äuglein"; - int i; - int j; - __locale_t loc; - __locale_t loc_dup; - loc = __newlocale(1 << LC_ALL, "de_DE", 0); - loc_dup = __duplocale(loc); - i = __strcoll_l(__one, __two, loc); - j = __strcoll_l(__one, __two, loc_dup); - return 0; - } - ], - [enable_clocale_flag=gnu],[enable_clocale_flag=generic], - [enable_clocale_flag=generic]) - fi - - # ... at some point put __strxfrm_l tests in as well. + enable_clocale_flag=gnu ;; darwin* | freebsd*) enable_clocale_flag=darwin @@ -1434,16 +1591,81 @@ AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [ esac fi - # Deal with gettext issues. Default to not using it (=no) until we detect - # support for it later. Let the user turn it off via --e/d, but let that - # default to on for easier handling. - USE_NLS=no - AC_ARG_ENABLE(nls, - AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]), - [], - [enable_nls=yes]) + # Sanity check model, and test for special functionality. + if test $enable_clocale_flag = gnu; then + AC_EGREP_CPP([_GLIBCXX_ok], [ + #include + #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) + _GLIBCXX_ok + #endif + ], enable_clocale_flag=gnu, enable_clocale_flag=generic) + + if test $enable_clocale = auto; then + # Test for bugs early in glibc-2.2.x series + AC_TRY_RUN([ + #define _GNU_SOURCE 1 + #include + #include + #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) + extern __typeof(newlocale) __newlocale; + extern __typeof(duplocale) __duplocale; + extern __typeof(strcoll_l) __strcoll_l; + #endif + int main() + { + const char __one[] = "Äuglein Augmen"; + const char __two[] = "Äuglein"; + int i; + int j; + __locale_t loc; + __locale_t loc_dup; + loc = __newlocale(1 << LC_ALL, "de_DE", 0); + loc_dup = __duplocale(loc); + i = __strcoll_l(__one, __two, loc); + j = __strcoll_l(__one, __two, loc_dup); + return 0; + } + ], + [enable_clocale_flag=gnu],[enable_clocale_flag=generic], + [enable_clocale_flag=generic]) + fi + + # Set it to scream when it hurts. + ac_save_CFLAGS="$CFLAGS" + CFLAGS="-Wimplicit-function-declaration -Werror" + + # Use strxfrm_l if available. + AC_TRY_COMPILE([#define _GNU_SOURCE 1 + #include + #include ], + [char s[128]; __locale_t loc; strxfrm_l(s, "C", 5, loc);], + AC_DEFINE(HAVE_STRXFRM_L, 1, + [Define if strxfrm_l is available in .]),) + + # Use strerror_l if available. + AC_TRY_COMPILE([#define _GNU_SOURCE 1 + #include + #include ], + [__locale_t loc; strerror_l(5, loc);], + AC_DEFINE(HAVE_STRERROR_L, 1, + [Define if strerror_l is available in .]),) + + CFLAGS="$ac_save_CFLAGS" + fi + + # Perhaps use strerror_r if available, and strerror_l isn't. + ac_save_CFLAGS="$CFLAGS" + CFLAGS="-Wimplicit-function-declaration -Werror" + AC_TRY_COMPILE([#define _GNU_SOURCE 1 + #include + #include ], + [char s[128]; strerror_r(5, s, 128);], + AC_DEFINE(HAVE_STRERROR_R, 1, + [Define if strerror_r is available in .]),) + CFLAGS="$ac_save_CFLAGS" # Set configure bits for specified locale package + AC_MSG_CHECKING([for C locale to use]) case ${enable_clocale_flag} in generic) AC_MSG_RESULT(generic) @@ -1646,6 +1868,35 @@ AC_DEFUN([GLIBCXX_ENABLE_CONCEPT_CHECKS], [ fi ]) +dnl +dnl Check for parallel mode pre-requisites, including OpenMP support. +dnl +dnl + Usage: GLIBCXX_ENABLE_PARALLEL +dnl +AC_DEFUN([GLIBCXX_ENABLE_PARALLEL], [ + + # NB: libstdc++ may be configured before libgomp: can't check for the actual + # dependencies (omp.h and libgomp). + enable_parallel=no; + if test -f $glibcxx_builddir/../libgomp/omp.h; then + enable_parallel=yes; + else + AC_MSG_NOTICE([$glibcxx_builddir/../libgomp/omp.h not found]) + fi + + # Check to see if it's explicitly disabled. +# GLIBCXX_ENABLE(libgomp,$1,,[enable code depending on libgomp], +# [permit yes|no]) + +# if test x$enable_libgomp = xno; then +# enable_parallel=no +# fi + + AC_MSG_CHECKING([for parallel mode support]) + AC_MSG_RESULT([$enable_parallel]) + GLIBCXX_CONDITIONAL(ENABLE_PARALLEL, test $enable_parallel = yes) +]) + dnl dnl Check for which I/O library to use: stdio, or something specific. @@ -1841,14 +2092,107 @@ dnl --disable-wchar_t leaves _GLIBCXX_USE_WCHAR_T undefined dnl + Usage: GLIBCXX_ENABLE_WCHAR_T[(DEFAULT)] dnl Where DEFAULT is either `yes' or `no'. dnl -dnl Necessary support (probed along with C99 support) must also be present. +dnl Necessary support must also be present. dnl AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [ GLIBCXX_ENABLE(wchar_t,$1,,[enable template specializations for 'wchar_t']) - if test x"$ac_c99_wchar" = x"yes" && test x"$enable_wchar_t" = x"yes"; then + + # Test wchar.h for mbstate_t, which is needed for char_traits and fpos. + AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) + AC_MSG_CHECKING([for mbstate_t]) + AC_TRY_COMPILE([#include ], + [mbstate_t teststate;], + have_mbstate_t=yes, have_mbstate_t=no) + AC_MSG_RESULT($have_mbstate_t) + if test x"$have_mbstate_t" = xyes; then + AC_DEFINE(HAVE_MBSTATE_T,1,[Define if mbstate_t exists in wchar.h.]) + fi + + # Test it always, for use in GLIBCXX_ENABLE_C99, together with + # ac_has_wchar_h. + AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no) + + if test x"$enable_wchar_t" = x"yes"; then + + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + + if test x"$ac_has_wchar_h" = xyes && + test x"$ac_has_wctype_h" = xyes; then + AC_TRY_COMPILE([#include + #include + wint_t i; + long l = WEOF; + long j = WCHAR_MIN; + long k = WCHAR_MAX; + namespace test + { + using ::btowc; + using ::fgetwc; + using ::fgetws; + using ::fputwc; + using ::fputws; + using ::fwide; + using ::fwprintf; + using ::fwscanf; + using ::getwc; + using ::getwchar; + using ::mbrlen; + using ::mbrtowc; + using ::mbsinit; + using ::mbsrtowcs; + using ::putwc; + using ::putwchar; + using ::swprintf; + using ::swscanf; + using ::ungetwc; + using ::vfwprintf; + using ::vswprintf; + using ::vwprintf; + using ::wcrtomb; + using ::wcscat; + using ::wcschr; + using ::wcscmp; + using ::wcscoll; + using ::wcscpy; + using ::wcscspn; + using ::wcsftime; + using ::wcslen; + using ::wcsncat; + using ::wcsncmp; + using ::wcsncpy; + using ::wcspbrk; + using ::wcsrchr; + using ::wcsrtombs; + using ::wcsspn; + using ::wcsstr; + using ::wcstod; + using ::wcstok; + using ::wcstol; + using ::wcstoul; + using ::wcsxfrm; + using ::wctob; + using ::wmemchr; + using ::wmemcmp; + using ::wmemcpy; + using ::wmemmove; + using ::wmemset; + using ::wprintf; + using ::wscanf; + } + ],[],[], [enable_wchar_t=no]) + else + enable_wchar_t=no + fi + + AC_LANG_RESTORE + fi + + if test x"$enable_wchar_t" = x"yes"; then AC_DEFINE(_GLIBCXX_USE_WCHAR_T, 1, [Define if code specialized for wchar_t should be used.]) fi + AC_MSG_CHECKING([for enabled wchar_t specializations]) AC_MSG_RESULT([$enable_wchar_t]) ]) @@ -1909,6 +2253,69 @@ AC_DEFUN([GLIBCXX_ENABLE_PCH], [ dnl +dnl Check for atomic builtins. +dnl See: +dnl http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html#Atomic-Builtins +dnl +dnl This checks to see if the host supports the compiler-generated +dnl builtins for atomic operations. Note, this is intended to be an +dnl all-or-nothing switch, so all the atomic operations that are used +dnl should be checked. +dnl +dnl Note: +dnl libgomp and libgfortran do this with a link test, instead of an asm test. +dnl see: CHECK_SYNC_FETCH_AND_ADD +dnl +dnl Defines: +dnl _GLIBCXX_ATOMIC_BUILTINS if the compiler on this target supports atomics. +dnl +AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [ + AC_MSG_CHECKING([for atomic builtins]) + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + + # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style. + cat > conftest.$ac_ext << EOF +[#]line __oline__ "configure" +int main() +{ + // NB: _Atomic_word not necessarily int. + typedef int atomic_type; + atomic_type c1; + atomic_type c2; + const atomic_type c3(0); + if (__sync_fetch_and_add(&c1, c2) == c3) + { + // Do something. + } + return 0; +} +EOF + old_CXXFLAGS="$CXXFLAGS" + CXXFLAGS=-S + if AC_TRY_EVAL(ac_compile); then + if grep __sync_fetch_and_add conftest.s >/dev/null 2>&1 ; then + enable_atomic_builtins=no + else + AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1, + [Define if builtin atomic operations are supported on this host.]) + enable_atomic_builtins=yes + atomicity_dir=cpu/generic/atomicity_builtins + fi + fi + CXXFLAGS="$old_CXXFLAGS" + rm -f conftest* + + # Now, if still generic, set to mutex. + if test $atomicity_dir = "cpu/generic" ; then + atomicity_dir=cpu/generic/atomicity_mutex + fi + AC_LANG_RESTORE + AC_MSG_RESULT($enable_atomic_builtins) +]) + + +dnl dnl Check for exception handling support. If an explicit enable/disable dnl sjlj exceptions is given, we don't have to detect. Otherwise the dnl target may or may not support call frame exceptions. @@ -1980,6 +2387,38 @@ EOF dnl +dnl Allow visibility attributes to be used on namespaces, objects, etc. +dnl +dnl --enable-visibility enables attempt to use visibility attributes. +dnl --disable-visibility turns off all use of visibility attributes. +dnl + Usage: GLIBCXX_ENABLE_VISIBILITY[(DEFAULT)] +dnl Where DEFAULT is 'yes'. +dnl +AC_DEFUN([GLIBCXX_ENABLE_VISIBILITY], [ +GLIBCXX_ENABLE(visibility,$1,,[enables visibility safe usage]) + +if test x$enable_visibility = xyes ; then + dnl all hail libgfortran + dnl Check whether the target supports hidden visibility. + AC_CACHE_CHECK([whether the target supports hidden visibility], + have_attribute_visibility, [ + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -Werror" + AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }], + [], have_attribute_visibility=yes, + have_attribute_visibility=no) + CFLAGS="$save_CFLAGS"]) + if test $have_attribute_visibility = no; then + enable_visibility=no + fi +fi + +GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_visibility = yes) +AC_MSG_NOTICE([visibility supported: $enable_visibility]) +]) + + +dnl dnl Add version tags to symbols in shared library (or not), additionally dnl marking other symbols as private/local (or not). dnl @@ -2004,7 +2443,7 @@ AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES]) # Turn a 'yes' into a suitable default. if test x$enable_symvers = xyes ; then - if test $enable_shared = no || test "x$LD" = x ; then + if test $enable_shared = no || test "x$LD" = x || test x$gcc_no_link = xyes; then enable_symvers=no else if test $with_gnu_ld = yes ; then @@ -2068,6 +2507,8 @@ changequote([,])dnl AC_MSG_WARN([=== you are not using the GNU linker.]) AC_MSG_WARN([=== Symbol versioning will be disabled.]) enable_symvers=no + elif test $glibcxx_ld_is_gold = yes ; then + : All versions of gold support symbol versioning. elif test $glibcxx_gnu_ld_version -lt $glibcxx_min_gnu_ld_version ; then # The right tools, the right setup, but too old. Fallbacks? AC_MSG_WARN(=== Linker version $glibcxx_gnu_ld_version is too old for) @@ -2192,8 +2633,6 @@ AC_DEFUN([GLIBCXX_ENABLE_THREADS], [ # be used in projects which are not available under the GNU Public License # but which still want to provide support for the GNU gettext functionality. # Please note that the actual code is *not* freely available. - -# serial 1 AC_DEFUN([AC_LC_MESSAGES], [ AC_CHECK_HEADER(locale.h, [ AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,