| dnl |
| dnl GLIBCXX_CONDITIONAL (NAME, SHELL-TEST) |
| dnl |
| dnl Exactly like AM_CONDITIONAL, but delays evaluation of the test until the |
| dnl end of configure. This lets tested variables be reassigned, and the |
| dnl conditional will depend on the final state of the variable. For a simple |
| dnl example of why this is needed, see GLIBCXX_ENABLE_HOSTED. |
| dnl |
| m4_define([_m4_divert(glibcxx_diversion)], 8000)dnl |
| AC_DEFUN([GLIBCXX_CONDITIONAL], [dnl |
| m4_divert_text([glibcxx_diversion],dnl |
| AM_CONDITIONAL([$1],[$2]) |
| )dnl |
| ])dnl |
| AC_DEFUN([GLIBCXX_EVALUATE_CONDITIONALS], [m4_undivert([glibcxx_diversion])])dnl |
| |
| |
| dnl |
| dnl Check to see what architecture and operating system we are compiling |
| dnl for. Also, if architecture- or OS-specific flags are required for |
| dnl compilation, pick them up here. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_HOST], [ |
| . $glibcxx_srcdir/configure.host |
| AC_MSG_NOTICE([CPU config directory is $cpu_include_dir]) |
| AC_MSG_NOTICE([OS config directory is $os_include_dir]) |
| ]) |
| |
| dnl |
| dnl Initialize the rest of the library configury. At this point we have |
| dnl variables like $host. |
| dnl |
| dnl Sets: |
| dnl SUBDIRS |
| dnl Substs: |
| dnl glibcxx_builddir (absolute path) |
| dnl glibcxx_srcdir (absolute path) |
| dnl toplevel_builddir (absolute path) |
| dnl toplevel_srcdir (absolute path) |
| dnl with_cross_host |
| dnl with_newlib |
| dnl with_target_subdir |
| dnl plus |
| dnl - the variables in GLIBCXX_CHECK_HOST / configure.host |
| dnl - default settings for all AM_CONFITIONAL test variables |
| dnl - lots of tools, like CC and CXX |
| dnl |
| AC_DEFUN([GLIBCXX_CONFIGURE], [ |
| # Keep these sync'd with the list in Makefile.am. The first provides an |
| # expandable list at autoconf time; the second provides an expandable list |
| # (i.e., shell variable) at configure time. |
| m4_define([glibcxx_SUBDIRS],[include libsupc++ src src/c++98 src/c++11 src/c++17 src/c++20 src/filesystem doc po testsuite python]) |
| SUBDIRS='glibcxx_SUBDIRS' |
| |
| # These need to be absolute paths, yet at the same time need to |
| # canonicalize only relative paths, because then amd will not unmount |
| # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. |
| glibcxx_builddir=`${PWDCMD-pwd}` |
| case $srcdir in |
| [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;; |
| *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;; |
| esac |
| toplevel_builddir=${glibcxx_builddir}/.. |
| toplevel_srcdir=${glibcxx_srcdir}/.. |
| AC_SUBST(glibcxx_builddir) |
| AC_SUBST(glibcxx_srcdir) |
| AC_SUBST(toplevel_builddir) |
| AC_SUBST(toplevel_srcdir) |
| |
| # We use these options to decide which functions to include. They are |
| # set from the top level. |
| AC_ARG_WITH([target-subdir], |
| AC_HELP_STRING([--with-target-subdir=SUBDIR], |
| [configuring in a subdirectory])) |
| |
| AC_ARG_WITH([cross-host], |
| AC_HELP_STRING([--with-cross-host=HOST], |
| [configuring with a cross compiler])) |
| |
| AC_ARG_WITH([newlib], |
| AC_HELP_STRING([--with-newlib], |
| [assume newlib as a system C library])) |
| |
| # Will set LN_S to either 'ln -s', 'ln', or 'cp -p' (if linking isn't |
| # available). Uncomment the next line to force a particular method. |
| AC_PROG_LN_S |
| #LN_S='cp -p' |
| |
| AC_CHECK_TOOL(AS, as) |
| AC_CHECK_TOOL(AR, ar) |
| AC_CHECK_TOOL(RANLIB, ranlib, ranlib-not-found-in-path-error) |
| |
| AM_MAINTAINER_MODE |
| |
| # Set up safe default values for all subsequent AM_CONDITIONAL tests |
| # which are themselves conditionally expanded. |
| ## (Right now, this only matters for enable_wchar_t, but nothing prevents |
| ## other macros from doing the same. This should be automated.) -pme |
| |
| # Check for C library flavor since GNU/Linux platforms use different |
| # configuration directories depending on the C library in use. |
| AC_EGREP_CPP([_using_uclibc], [ |
| #include <stdio.h> |
| #if __UCLIBC__ |
| _using_uclibc |
| #endif |
| ], uclibc=yes, uclibc=no) |
| |
| AC_EGREP_CPP([_using_bionic], [ |
| #include <stdio.h> |
| #if __BIONIC__ |
| _using_bionic |
| #endif |
| ], bionic=yes, bionic=no) |
| |
| # Find platform-specific directories containing configuration info. |
| # Also possibly modify flags used elsewhere, as needed by the platform. |
| GLIBCXX_CHECK_HOST |
| ]) |
| |
| |
| dnl |
| dnl Tests for newer compiler features, or features that are present in newer |
| dnl compiler versions but not older compiler versions still in use, should |
| dnl be placed here. |
| dnl |
| dnl Defines: |
| dnl WERROR='-Werror' if requested and possible; g++'s that lack the |
| dnl new inlining code or the new system_header pragma will die on -Werror. |
| dnl Leave it out by default and use maint-mode to use it. |
| dnl SECTION_FLAGS='-ffunction-sections -fdata-sections' if |
| dnl compiler supports it and the user has not requested debug mode. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [ |
| # All these tests are for C++; save the language and the compiler flags. |
| # The CXXFLAGS thing is suspicious, but based on similar bits previously |
| # found in GLIBCXX_CONFIGURE. |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_test_CXXFLAGS="${CXXFLAGS+set}" |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| |
| # Check for -ffunction-sections -fdata-sections |
| AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections]) |
| 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 |
| # this is the suspicious part |
| CXXFLAGS='' |
| fi |
| if test x"$ac_fdsections" = x"yes"; then |
| SECTION_FLAGS='-ffunction-sections -fdata-sections' |
| fi |
| AC_MSG_RESULT($ac_fdsections) |
| |
| AC_LANG_RESTORE |
| AC_SUBST(SECTION_FLAGS) |
| ]) |
| |
| |
| dnl |
| dnl If GNU ld is in use, check to see if tricky linker opts can be used. If |
| dnl the native linker is in use, all variables will be defined to something |
| dnl safe (like an empty string). |
| dnl |
| dnl Defines: |
| dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible |
| 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 |
| dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [ |
| # If we're not using GNU ld, then there's no point in even trying these |
| # tests. Check for that first. We should have already tested for gld |
| # by now (in libtool), but require it now just to be safe... |
| test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS='' |
| test -z "$OPT_LDFLAGS" && OPT_LDFLAGS='' |
| AC_REQUIRE([AC_PROG_LD]) |
| AC_REQUIRE([AC_PROG_AWK]) |
| |
| # The name set by libtool depends on the version of libtool. Shame on us |
| # for depending on an impl detail, but c'est la vie. Older versions used |
| # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on |
| # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually |
| # makes sense). We'll test with_gnu_ld everywhere else, so if that isn't |
| # set (hence we're using an older libtool), then set it. |
| if test x${with_gnu_ld+set} != xset; then |
| if test x${ac_cv_prog_gnu_ld+set} != xset; then |
| # We got through "ac_require(ac_prog_ld)" and still not set? Huh? |
| with_gnu_ld=no |
| else |
| with_gnu_ld=$ac_cv_prog_gnu_ld |
| fi |
| fi |
| |
| # Start by getting the version number. I think the libtool test already |
| # does some of this, but throws away the result. |
| glibcxx_ld_is_gold=no |
| if test x"$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 | |
| sed -e 's/[. ][0-9]\{8\}$//;s/.* \([^ ]\{1,\}\)$/\1/; q'` |
| 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_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. |
| |
| ac_test_CFLAGS="${CFLAGS+set}" |
| ac_save_CFLAGS="$CFLAGS" |
| CFLAGS='-Wl,--gc-sections' |
| |
| # Check for -Wl,--gc-sections |
| AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections]) |
| AC_TRY_LINK([ int one(void) { return 1; } |
| int two(void) { return 2; } |
| ], [ two(); ] , [ac_gcsections=yes], [ac_gcsections=no]) |
| if test "$ac_gcsections" = "yes"; then |
| rm -f conftest.c |
| touch conftest.c |
| if $CC -c conftest.c; then |
| if $LD --gc-sections -o conftest conftest.o 2>&1 | \ |
| grep "Warning: gc-sections option ignored" > /dev/null; then |
| ac_gcsections=no |
| fi |
| fi |
| rm -f conftest.c conftest.o conftest |
| fi |
| if test "$ac_gcsections" = "yes"; then |
| SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS" |
| fi |
| AC_MSG_RESULT($ac_gcsections) |
| |
| if test "$ac_test_CFLAGS" = set; then |
| CFLAGS="$ac_save_CFLAGS" |
| else |
| # this is the suspicious part |
| CFLAGS='' |
| fi |
| fi |
| |
| # Set -z,relro. |
| # Note this is only for shared objects. |
| ac_ld_relro=no |
| if test x"$with_gnu_ld" = x"yes"; then |
| # cygwin and mingw uses PE, which has no ELF relro support, |
| # multi target ld may confuse configure machinery |
| case "$host" in |
| *-*-cygwin*) |
| ;; |
| *-*-mingw*) |
| ;; |
| *) |
| AC_MSG_CHECKING([for ld that supports -Wl,-z,relro]) |
| cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"` |
| if test -n "$cxx_z_relo"; then |
| OPT_LDFLAGS="-Wl,-z,relro" |
| ac_ld_relro=yes |
| fi |
| AC_MSG_RESULT($ac_ld_relro) |
| esac |
| fi |
| |
| # Set linker optimization flags. |
| if test x"$with_gnu_ld" = x"yes"; then |
| OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS" |
| fi |
| |
| AC_SUBST(SECTION_LDFLAGS) |
| AC_SUBST(OPT_LDFLAGS) |
| ]) |
| |
| |
| 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 |
| dnl Defines: |
| dnl _GLIBCXX_RES_LIMITS if we can set artificial resource limits |
| dnl various HAVE_LIMIT_* for individual limit names |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT_ancilliary], [ |
| AC_MSG_CHECKING([for RLIMIT_$1]) |
| AC_TRY_COMPILE( |
| [#include <unistd.h> |
| #include <sys/time.h> |
| #include <sys/resource.h> |
| ], |
| [ int f = RLIMIT_$1 ; ], |
| [glibcxx_mresult=1], [glibcxx_mresult=0]) |
| AC_DEFINE_UNQUOTED(HAVE_LIMIT_$1, $glibcxx_mresult, |
| [Only used in build directory testsuite_hooks.h.]) |
| if test $glibcxx_mresult = 1 ; then res=yes ; else res=no ; fi |
| AC_MSG_RESULT($res) |
| ]) |
| |
| AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT], [ |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| setrlimit_have_headers=yes |
| AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h, |
| [], |
| [setrlimit_have_headers=no]) |
| # If don't have the headers, then we can't run the tests now, and we |
| # won't be seeing any of these during testsuite compilation. |
| if test $setrlimit_have_headers = yes; then |
| # Can't do these in a loop, else the resulting syntax is wrong. |
| GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA) |
| GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS) |
| GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM) |
| GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS) |
| GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE) |
| |
| # Check for rlimit, setrlimit. |
| AC_CACHE_VAL(glibcxx_cv_setrlimit, [ |
| AC_TRY_COMPILE( |
| [#include <unistd.h> |
| #include <sys/time.h> |
| #include <sys/resource.h> |
| ], |
| [struct rlimit r; |
| setrlimit(0, &r);], |
| [glibcxx_cv_setrlimit=yes], [glibcxx_cv_setrlimit=no]) |
| ]) |
| fi |
| |
| AC_MSG_CHECKING([for testsuite resource limits support]) |
| if test $setrlimit_have_headers = yes && test $glibcxx_cv_setrlimit = yes; then |
| ac_res_limits=yes |
| AC_DEFINE(_GLIBCXX_RES_LIMITS, 1, |
| [Define if using setrlimit to set resource limits during |
| "make check"]) |
| else |
| ac_res_limits=no |
| fi |
| AC_LANG_RESTORE |
| AC_MSG_RESULT($ac_res_limits) |
| ]) |
| |
| |
| dnl |
| dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>. |
| dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| |
| AC_MSG_CHECKING([for S_ISREG or S_IFREG]) |
| AC_CACHE_VAL(glibcxx_cv_S_ISREG, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <sys/stat.h>], |
| [struct stat buffer; |
| fstat(0, &buffer); |
| S_ISREG(buffer.st_mode);], |
| [glibcxx_cv_S_ISREG=yes], |
| [glibcxx_cv_S_ISREG=no]) |
| ]) |
| AC_CACHE_VAL(glibcxx_cv_S_IFREG, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <sys/stat.h>], |
| [struct stat buffer; |
| fstat(0, &buffer); |
| S_IFREG & buffer.st_mode;], |
| [glibcxx_cv_S_IFREG=yes], |
| [glibcxx_cv_S_IFREG=no]) |
| ]) |
| res=no |
| if test $glibcxx_cv_S_ISREG = yes; then |
| AC_DEFINE(HAVE_S_ISREG, 1, |
| [Define if S_ISREG is available in <sys/stat.h>.]) |
| res=S_ISREG |
| elif test $glibcxx_cv_S_IFREG = yes; then |
| AC_DEFINE(HAVE_S_IFREG, 1, |
| [Define if S_IFREG is available in <sys/stat.h>.]) |
| res=S_IFREG |
| fi |
| AC_MSG_RESULT($res) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| |
| dnl |
| dnl Check whether poll is available in <poll.h>, and define HAVE_POLL. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_POLL], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| |
| AC_MSG_CHECKING([for poll]) |
| AC_CACHE_VAL(glibcxx_cv_POLL, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <poll.h>], |
| [struct pollfd pfd[1]; |
| pfd[0].events = POLLIN; |
| poll(pfd, 1, 0);], |
| [glibcxx_cv_POLL=yes], |
| [glibcxx_cv_POLL=no]) |
| ]) |
| if test $glibcxx_cv_POLL = yes; then |
| AC_DEFINE(HAVE_POLL, 1, [Define if poll is available in <poll.h>.]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_POLL) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| |
| dnl |
| dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_WRITEV], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| |
| AC_MSG_CHECKING([for writev]) |
| AC_CACHE_VAL(glibcxx_cv_WRITEV, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <sys/uio.h>], |
| [struct iovec iov[2]; |
| writev(0, iov, 0);], |
| [glibcxx_cv_WRITEV=yes], |
| [glibcxx_cv_WRITEV=no]) |
| ]) |
| if test $glibcxx_cv_WRITEV = yes; then |
| AC_DEFINE(HAVE_WRITEV, 1, [Define if writev is available in <sys/uio.h>.]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_WRITEV) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| |
| dnl |
| dnl Check whether LFS support is available. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_LFS], [ |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| AC_MSG_CHECKING([for LFS support]) |
| AC_CACHE_VAL(glibcxx_cv_LFS, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <unistd.h> |
| #include <stdio.h> |
| #include <sys/stat.h> |
| ], |
| [FILE* fp; |
| fopen64("t", "w"); |
| fseeko64(fp, 0, SEEK_CUR); |
| ftello64(fp); |
| lseek64(1, 0, SEEK_CUR); |
| struct stat64 buf; |
| fstat64(1, &buf);], |
| [glibcxx_cv_LFS=yes], |
| [glibcxx_cv_LFS=no]) |
| ]) |
| if test $glibcxx_cv_LFS = yes; then |
| AC_DEFINE(_GLIBCXX_USE_LFS, 1, [Define if LFS support is available.]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_LFS) |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| |
| dnl |
| dnl Check for whether a fully dynamic basic_string implementation should |
| dnl be turned on, that does not put empty objects in per-process static |
| dnl memory (mostly useful together with shared memory allocators, see PR |
| dnl libstdc++/16612 for details). |
| dnl |
| dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 1 |
| dnl --disable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 0 |
| dnl otherwise undefined |
| dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)] |
| dnl Where DEFAULT is either `yes' or `no'. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [ |
| GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory]) |
| if test $enable_fully_dynamic_string = yes; then |
| enable_fully_dynamic_string_def=1 |
| else |
| enable_fully_dynamic_string_def=0 |
| fi |
| AC_DEFINE_UNQUOTED([_GLIBCXX_FULLY_DYNAMIC_STRING], [${enable_fully_dynamic_string_def}], |
| [Define to 1 if a fully dynamic basic_string is wanted, 0 to disable, undefined for platform defaults]) |
| ]) |
| |
| |
| dnl |
| dnl Does any necessary configuration of the testsuite directory. Generates |
| dnl the testsuite_hooks.h header. |
| dnl |
| dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this. |
| dnl |
| dnl Sets: |
| dnl enable_abi_check |
| dnl GLIBCXX_TEST_WCHAR_T |
| dnl GLIBCXX_TEST_THREAD |
| dnl Substs: |
| dnl baseline_dir |
| dnl baseline_subdir_switch |
| dnl |
| AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [ |
| # Do checks for resource limit functions. |
| GLIBCXX_CHECK_SETRLIMIT |
| |
| if $GLIBCXX_IS_NATIVE ; then |
| # Look for setenv, so that extended locale tests can be performed. |
| GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv) |
| fi |
| |
| if $GLIBCXX_IS_NATIVE && test $is_hosted = yes && |
| test $enable_symvers != no; then |
| case "$host" in |
| *-*-cygwin*) |
| enable_abi_check=no ;; |
| *) |
| enable_abi_check=yes ;; |
| esac |
| else |
| # Only build this as native, since automake does not understand |
| # CXX_FOR_BUILD. |
| enable_abi_check=no |
| fi |
| |
| # Export file names for ABI checking. |
| baseline_dir="$glibcxx_srcdir/config/abi/post/${abi_baseline_pair}" |
| AC_SUBST(baseline_dir) |
| baseline_subdir_switch="$abi_baseline_subdir_switch" |
| AC_SUBST(baseline_subdir_switch) |
| ]) |
| |
| |
| dnl |
| dnl Does any necessary configuration for docbook in the docs directory. |
| dnl |
| dnl XSLTPROC must be set before this |
| dnl |
| dnl Sets: |
| dnl glibcxx_stylesheets |
| dnl Substs: |
| dnl XSL_STYLE_DIR |
| dnl |
| AC_DEFUN([GLIBCXX_CONFIGURE_DOCBOOK], [ |
| |
| glibcxx_docbook_url=http://docbook.sourceforge.net/release/xsl-ns/current/ |
| |
| AC_MSG_CHECKING([for local stylesheet directory]) |
| glibcxx_local_stylesheets=no |
| if test x${XMLCATALOG} = xyes && xsl_style_dir=`xmlcatalog "" $glibcxx_docbook_url 2>/dev/null` |
| then |
| XSL_STYLE_DIR=`echo $xsl_style_dir | sed -n 's;^file://;;p'` |
| glibcxx_local_stylesheets=yes |
| else |
| for dir in \ |
| /usr/share/sgml/docbook/xsl-ns-stylesheets \ |
| /usr/share/xml/docbook/stylesheet/docbook-xsl-ns \ |
| /usr/share/xml/docbook/stylesheet/nwalsh5/current \ |
| /usr/share/xml/docbook/stylesheet/nwalsh/current |
| do |
| if test -d $dir; then |
| glibcxx_local_stylesheets=yes |
| XSL_STYLE_DIR=$dir |
| break |
| fi |
| done |
| fi |
| AC_MSG_RESULT($glibcxx_local_stylesheets) |
| |
| if test x"$glibcxx_local_stylesheets" = x"yes"; then |
| AC_SUBST(XSL_STYLE_DIR) |
| AC_MSG_NOTICE($XSL_STYLE_DIR) |
| |
| AC_MSG_CHECKING([for docbook stylesheets for documentation creation]) |
| glibcxx_stylesheets=no |
| if test x${XMLCATALOG} = xno || xmlcatalog "" $glibcxx_docbook_url/xhtml/docbook.xsl >/dev/null 2>&1; then |
| if test x${XSLTPROC} = xyes && echo '<title/>' | xsltproc --noout --nonet --xinclude $glibcxx_docbook_url/xhtml/docbook.xsl - 2>/dev/null; then |
| glibcxx_stylesheets=yes |
| fi |
| fi |
| AC_MSG_RESULT($glibcxx_stylesheets) |
| |
| else |
| glibcxx_stylesheets=no |
| fi |
| |
| # Check for epub3 dependencies. |
| AC_MSG_CHECKING([for epub3 stylesheets for documentation creation]) |
| glibcxx_epub_stylesheets=no |
| if test x"$glibcxx_local_stylesheets" = x"yes"; then |
| if test -f "$XSL_STYLE_DIR/epub3/chunk.xsl"; then |
| glibcxx_epub_stylesheets=yes |
| fi |
| fi |
| AC_MSG_RESULT($glibcxx_epub_stylesheets) |
| AM_CONDITIONAL(BUILD_EPUB, test x"$glibcxx_epub_stylesheets" = x"yes") |
| |
| ]) |
| |
| |
| dnl |
| dnl Set up *_INCLUDES variables for all sundry Makefile.am's. |
| dnl |
| dnl Substs: |
| dnl GLIBCXX_INCLUDES |
| dnl TOPLEVEL_INCLUDES |
| dnl |
| AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [ |
| # Used for every C++ compile we perform. |
| GLIBCXX_INCLUDES="\ |
| -I$glibcxx_builddir/include/$host_alias \ |
| -I$glibcxx_builddir/include \ |
| -I$glibcxx_srcdir/libsupc++" |
| |
| # For Canadian crosses, pick this up too. |
| if test $CANADIAN = yes; then |
| GLIBCXX_INCLUDES="$GLIBCXX_INCLUDES -I\${includedir}" |
| fi |
| |
| # Stuff in the actual top level. Currently only used by libsupc++ to |
| # get unwind* headers from the libgcc dir. |
| #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc -I$(toplevel_srcdir)/include' |
| TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc' |
| |
| # Now, export this to all the little Makefiles.... |
| AC_SUBST(GLIBCXX_INCLUDES) |
| AC_SUBST(TOPLEVEL_INCLUDES) |
| ]) |
| |
| |
| dnl |
| dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's. |
| dnl (SECTION_FLAGS is done under CHECK_COMPILER_FEATURES.) |
| dnl |
| dnl Substs: |
| dnl OPTIMIZE_CXXFLAGS |
| dnl WARN_FLAGS |
| dnl |
| AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [ |
| # Optimization flags that are probably a good idea for thrill-seekers. Just |
| # uncomment the lines below and make, everything else is ready to go... |
| # Alternatively OPTIMIZE_CXXFLAGS can be set in configure.host. |
| # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc |
| AC_SUBST(OPTIMIZE_CXXFLAGS) |
| |
| WARN_FLAGS="-Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi=2" |
| AC_SUBST(WARN_FLAGS) |
| ]) |
| |
| |
| dnl |
| dnl All installation directory information is determined here. |
| dnl |
| dnl Substs: |
| dnl gxx_install_dir |
| dnl glibcxx_prefixdir |
| dnl glibcxx_toolexecdir |
| dnl glibcxx_toolexeclibdir |
| dnl |
| dnl Assumes cross_compiling bits already done, and with_cross_host in |
| dnl particular. |
| dnl |
| dnl This logic must match gcc/configure.ac's setting of gcc_gxx_include_dir. |
| dnl config/gxx-include-dir.m4 must be kept consistant with this as well. |
| AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [ |
| glibcxx_toolexecdir=no |
| glibcxx_toolexeclibdir=no |
| glibcxx_prefixdir=$prefix |
| |
| AC_MSG_CHECKING([for gxx-include-dir]) |
| AC_ARG_WITH([gxx-include-dir], |
| AC_HELP_STRING([--with-gxx-include-dir=DIR], |
| [installation directory for include files]), |
| [case "$withval" in |
| yes) AC_MSG_ERROR([Missing directory for --with-gxx-include-dir]) ;; |
| no) gxx_include_dir=no ;; |
| *) gxx_include_dir=$withval ;; |
| esac], |
| [gxx_include_dir=no]) |
| AC_MSG_RESULT($gxx_include_dir) |
| |
| AC_MSG_CHECKING([for --enable-version-specific-runtime-libs]) |
| AC_ARG_ENABLE([version-specific-runtime-libs], |
| AC_HELP_STRING([--enable-version-specific-runtime-libs], |
| [Specify that runtime libraries should be installed in a compiler-specific directory]), |
| [case "$enableval" in |
| yes) version_specific_libs=yes ;; |
| no) version_specific_libs=no ;; |
| *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);; |
| esac], |
| [version_specific_libs=no]) |
| AC_MSG_RESULT($version_specific_libs) |
| |
| GCC_WITH_TOOLEXECLIBDIR |
| |
| # Default case for install directory for include files. |
| if test $version_specific_libs = no && test $gxx_include_dir = no; then |
| gxx_include_dir='include/c++/${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. |
| if test $version_specific_libs = yes; then |
| # Need the gcc compiler version to know where to install libraries |
| # and header files if --enable-version-specific-runtime-libs option |
| # is selected. FIXME: these variables are misnamed, there are |
| # no executables installed in _toolexecdir or _toolexeclibdir. |
| if test x"$gxx_include_dir" = x"no"; then |
| gxx_include_dir='${libdir}/gcc/${host_alias}/${gcc_version}/include/c++' |
| fi |
| glibcxx_toolexecdir='${libdir}/gcc/${host_alias}' |
| glibcxx_toolexeclibdir='${toolexecdir}/${gcc_version}$(MULTISUBDIR)' |
| fi |
| |
| # Calculate glibcxx_toolexecdir, glibcxx_toolexeclibdir |
| # Install a library built with a cross compiler in tooldir, not libdir. |
| if test x"$glibcxx_toolexecdir" = x"no"; then |
| if test -n "$with_cross_host" && |
| test x"$with_cross_host" != x"no"; then |
| glibcxx_toolexecdir='${exec_prefix}/${host_alias}' |
| case ${with_toolexeclibdir} in |
| no) |
| glibcxx_toolexeclibdir='${toolexecdir}/lib' |
| ;; |
| *) |
| glibcxx_toolexeclibdir=${with_toolexeclibdir} |
| ;; |
| esac |
| else |
| glibcxx_toolexecdir='${libdir}/gcc/${host_alias}' |
| glibcxx_toolexeclibdir='${libdir}' |
| fi |
| multi_os_directory=`$CXX -print-multi-os-directory` |
| case $multi_os_directory in |
| .) ;; # Avoid trailing /. |
| *) glibcxx_toolexeclibdir=$glibcxx_toolexeclibdir/$multi_os_directory ;; |
| esac |
| fi |
| |
| AC_MSG_CHECKING([for install location]) |
| AC_MSG_RESULT($gxx_include_dir) |
| |
| AC_SUBST(glibcxx_prefixdir) |
| AC_SUBST(gxx_include_dir) |
| AC_SUBST(glibcxx_toolexecdir) |
| AC_SUBST(glibcxx_toolexeclibdir) |
| ]) |
| |
| |
| dnl |
| dnl GLIBCXX_ENABLE |
| dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING) |
| dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c) |
| dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER) |
| dnl |
| dnl See manual/appendix_porting.html#appendix.porting.build_hacking for |
| dnl documentation. |
| dnl |
| m4_define([GLIBCXX_ENABLE],[dnl |
| m4_define([_g_switch],[--enable-$1])dnl |
| m4_define([_g_help],[AC_HELP_STRING([_g_switch$3],[$4 @<:@default=$2@:>@])])dnl |
| AC_ARG_ENABLE([$1],m4_dquote(_g_help), |
| m4_bmatch([$5], |
| [^permit ], |
| [[ |
| case "$enableval" in |
| m4_bpatsubst([$5],[permit ])) ;; |
| *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;; |
| dnl Idea for future: generate a URL pointing to |
| dnl "onlinedocs/configopts.html#whatever" |
| esac |
| ]], |
| [^$], |
| [[ |
| case "$enableval" in |
| yes|no) ;; |
| *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;; |
| esac |
| ]], |
| [[$5]]), |
| [enable_]m4_bpatsubst([$1],-,_)[=][$2]) |
| m4_undefine([_g_switch])dnl |
| m4_undefine([_g_help])dnl |
| ]) |
| |
| |
| dnl |
| dnl Check for ISO/IEC 9899:1999 "C99" support. |
| dnl |
| dnl --enable-c99 defines _GLIBCXX_USE_C99 |
| dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined |
| dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)] |
| dnl Where DEFAULT is either `yes' or `no'. |
| dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_C99], [ |
| GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support]) |
| |
| if test x"$enable_c99" = x"yes"; then |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| |
| # Use -std=c++98 (instead of -std=gnu++98) because leaving __STRICT_ANSI__ |
| # undefined may cause fake C99 facilities, like pre-standard snprintf, |
| # to be spuriously enabled. |
| 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="$LIBS -lm"], [ |
| # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK |
| gcc_no_link=yes |
| ]) |
| fi |
| |
| # Check for the existence of <math.h> functions used if C99 is enabled. |
| AC_MSG_CHECKING([for ISO C99 support in <math.h> for C++98]) |
| AC_CACHE_VAL(glibcxx_cv_c99_math_cxx98, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <math.h> |
| volatile double d1, d2; |
| volatile int i;], |
| [i = fpclassify(d1); |
| i = isfinite(d1); |
| i = isinf(d1); |
| i = isnan(d1); |
| i = isnormal(d1); |
| i = signbit(d1); |
| i = isgreater(d1, d2); |
| i = isgreaterequal(d1, d2); |
| i = isless(d1, d2); |
| i = islessequal(d1, d2); |
| i = islessgreater(d1, d2); |
| i = islessgreater(d1, d2); |
| i = isunordered(d1, d2); |
| ], [glibcxx_cv_c99_math_cxx98=yes], [glibcxx_cv_c99_math_cxx98=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_c99_math_cxx98) |
| if test x"$glibcxx_cv_c99_math_cxx98" = x"yes"; then |
| AC_DEFINE(_GLIBCXX98_USE_C99_MATH, 1, |
| [Define if C99 functions or macros in <math.h> should be imported |
| in <cmath> in namespace std for C++98.]) |
| fi |
| |
| # Check for the existence of <complex.h> complex math functions. |
| # This is necessary even though libstdc++ uses the builtin versions |
| # of these functions, because if the builtin cannot be used, a reference |
| # to the library function is emitted. |
| AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no) |
| AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) |
| if test x"$ac_has_complex_h" = x"yes"; then |
| AC_MSG_CHECKING([for ISO C99 support in <complex.h> for C++98]) |
| AC_CACHE_VAL(glibcxx_cv_c99_complex_cxx98, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <complex.h> |
| 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); |
| tmpf = cprojf(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); |
| tmpd = cproj(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); |
| tmpld = cprojl(tmpld); |
| ], [glibcxx_cv_c99_complex_cxx98=yes], [glibcxx_cv_c99_complex_cxx98=no]) |
| ]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_c99_complex_cxx98) |
| if test x"$glibcxx_cv_c99_complex_cxx98" = x"yes"; then |
| AC_DEFINE(_GLIBCXX98_USE_C99_COMPLEX, 1, |
| [Define if C99 functions in <complex.h> should be used in |
| <complex> for C++98. Using compiler builtins for these functions |
| requires corresponding C99 library functions to be present.]) |
| fi |
| |
| # Check for the existence in <stdio.h> of vscanf, et. al. |
| AC_MSG_CHECKING([for ISO C99 support in <stdio.h> for C++98]) |
| AC_CACHE_VAL(glibcxx_cv_c99_stdio_cxx98, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <stdio.h> |
| #include <stdarg.h> |
| 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(fmt, 0, "%i"); |
| }], [], |
| [glibcxx_cv_c99_stdio_cxx98=yes], [glibcxx_cv_c99_stdio_cxx98=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_c99_stdio_cxx98) |
| if test x"$glibcxx_cv_c99_stdio_cxx98" = x"yes"; then |
| AC_DEFINE(_GLIBCXX98_USE_C99_STDIO, 1, |
| [Define if C99 functions or macros in <stdio.h> should be imported |
| in <cstdio> in namespace std for C++98.]) |
| fi |
| |
| # Check for the existence in <stdlib.h> of lldiv_t, et. al. |
| AC_MSG_CHECKING([for ISO C99 support in <stdlib.h> for C++98]) |
| AC_CACHE_VAL(glibcxx_cv_c99_stdlib_cxx98, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <stdlib.h> |
| 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); |
| ], [glibcxx_cv_c99_stdlib_cxx98=yes], [glibcxx_cv_c99_stdlib_cxx98=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_c99_stdlib_cxx98) |
| if test x"$glibcxx_cv_c99_stdlib_cxx98" = x"yes"; then |
| AC_DEFINE(_GLIBCXX98_USE_C99_STDLIB, 1, |
| [Define if C99 functions or macros in <stdlib.h> should be imported |
| in <cstdlib> in namespace std for C++98.]) |
| fi |
| |
| # Check for the existence in <wchar.h> of wcstold, etc. |
| if test x"$ac_has_wchar_h" = xyes && |
| test x"$ac_has_wctype_h" = xyes; then |
| AC_MSG_CHECKING([for ISO C99 support in <wchar.h> for C++98]) |
| AC_CACHE_VAL(glibcxx_cv_c99_wchar_cxx98, [ |
| AC_TRY_COMPILE([#include <wchar.h> |
| namespace test |
| { |
| using ::wcstold; |
| using ::wcstoll; |
| using ::wcstoull; |
| } |
| ], [], [glibcxx_cv_c99_wchar_cxx98=yes], [glibcxx_cv_c99_wchar_cxx98=no]) |
| ]) |
| |
| # Checks for wide character functions that may not be present. |
| # Injection of these is wrapped with guard macros. |
| # NB: only put functions here, instead of immediately above, if |
| # absolutely necessary. |
| AC_TRY_COMPILE([#include <wchar.h> |
| namespace test { using ::vfwscanf; }], [], |
| [AC_DEFINE(HAVE_VFWSCANF, 1, [Defined if vfwscanf exists.])], []) |
| |
| AC_TRY_COMPILE([#include <wchar.h> |
| namespace test { using ::vswscanf; }], [], |
| [AC_DEFINE(HAVE_VSWSCANF, 1, [Defined if vswscanf exists.])], []) |
| |
| AC_TRY_COMPILE([#include <wchar.h> |
| namespace test { using ::vwscanf; }], [], |
| [AC_DEFINE(HAVE_VWSCANF, 1, [Defined if vwscanf exists.])], []) |
| |
| AC_TRY_COMPILE([#include <wchar.h> |
| namespace test { using ::wcstof; }], [], |
| [AC_DEFINE(HAVE_WCSTOF, 1, [Defined if wcstof exists.])], []) |
| |
| AC_TRY_COMPILE([#include <wctype.h>], |
| [wint_t t; int i = iswblank(t);], |
| [AC_DEFINE(HAVE_ISWBLANK, 1, [Defined if iswblank exists.])], []) |
| |
| AC_MSG_RESULT($glibcxx_cv_c99_wchar_cxx98) |
| if test x"$glibcxx_cv_c99_wchar_cxx98" = x"yes"; then |
| AC_DEFINE(_GLIBCXX98_USE_C99_WCHAR, 1, |
| [Define if C99 functions or macros in <wchar.h> should be imported |
| in <cwchar> in namespace std for C++98.]) |
| fi |
| fi |
| |
| # Option parsed, now set things appropriately. |
| if test x"$glibcxx_cv_c99_math_cxx98" = x"no" || |
| test x"$glibcxx_cv_c99_complex_cxx98" = x"no" || |
| test x"$glibcxx_cv_c99_stdio_cxx98" = x"no" || |
| test x"$glibcxx_cv_c99_stdlib_cxx98" = x"no" || |
| test x"$glibcxx_cv_c99_wchar_cxx98" = x"no"; then |
| enable_c99=no; |
| else |
| AC_DEFINE(_GLIBCXX_USE_C99, 1, |
| [Define if C99 functions or macros from <wchar.h>, <math.h>, |
| <complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.]) |
| fi |
| |
| gcc_no_link="$ac_save_gcc_no_link" |
| LIBS="$ac_save_LIBS" |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| |
| # Use -std=c++11 and test again for C99 library feature in C++11 mode. |
| # For the reasons given above we use -std=c++11 not -std=gnu++11. |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -std=c++11" |
| 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="$LIBS -lm"], [ |
| # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK |
| gcc_no_link=yes |
| ]) |
| fi |
| |
| # Check for the existence of <math.h> functions used if C99 is enabled. |
| AC_MSG_CHECKING([for ISO C99 support in <math.h> for C++11]) |
| AC_CACHE_VAL(glibcxx_cv_c99_math_cxx11, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <math.h> |
| volatile double d1, d2; |
| volatile int i;], |
| [i = fpclassify(d1); |
| i = isfinite(d1); |
| i = isinf(d1); |
| i = isnan(d1); |
| i = isnormal(d1); |
| i = signbit(d1); |
| i = isgreater(d1, d2); |
| i = isgreaterequal(d1, d2); |
| i = isless(d1, d2); |
| i = islessequal(d1, d2); |
| i = islessgreater(d1, d2); |
| i = islessgreater(d1, d2); |
| i = isunordered(d1, d2); |
| ], [glibcxx_cv_c99_math_cxx11=yes], [glibcxx_cv_c99_math_cxx11=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_c99_math_cxx11) |
| if test x"$glibcxx_cv_c99_math_cxx11" = x"yes"; then |
| AC_DEFINE(_GLIBCXX11_USE_C99_MATH, 1, |
| [Define if C99 functions or macros in <math.h> should be imported |
| in <cmath> in namespace std for C++11.]) |
| fi |
| |
| # Check for the existence of <complex.h> complex math functions. |
| # This is necessary even though libstdc++ uses the builtin versions |
| # of these functions, because if the builtin cannot be used, a reference |
| # to the library function is emitted. |
| AC_CHECK_HEADERS(tgmath.h, ac_has_tgmath_h=yes, ac_has_tgmath_h=no) |
| AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) |
| if test x"$ac_has_complex_h" = x"yes"; then |
| AC_MSG_CHECKING([for ISO C99 support in <complex.h> for C++11]) |
| AC_CACHE_VAL(glibcxx_cv_c99_complex_cxx11, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <complex.h> |
| 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); |
| tmpf = cprojf(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); |
| tmpd = cproj(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); |
| tmpld = cprojl(tmpld); |
| ], [glibcxx_cv_c99_complex_cxx11=yes], [glibcxx_cv_c99_complex_cxx11=no]) |
| ]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_c99_complex_cxx11) |
| if test x"$glibcxx_cv_c99_complex_cxx11" = x"yes"; then |
| AC_DEFINE(_GLIBCXX11_USE_C99_COMPLEX, 1, |
| [Define if C99 functions in <complex.h> should be used in |
| <complex> for C++11. Using compiler builtins for these functions |
| requires corresponding C99 library functions to be present.]) |
| fi |
| |
| # Check for the existence in <stdio.h> of vscanf, et. al. |
| AC_MSG_CHECKING([for ISO C99 support in <stdio.h> for C++11]) |
| AC_CACHE_VAL(glibcxx_cv_c99_stdio_cxx11, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <stdio.h> |
| #include <stdarg.h> |
| 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(fmt, 0, "%i"); |
| }], [], |
| [glibcxx_cv_c99_stdio_cxx11=yes], [glibcxx_cv_c99_stdio_cxx11=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_c99_stdio_cxx11) |
| if test x"$glibcxx_cv_c99_stdio_cxx11" = x"yes"; then |
| AC_DEFINE(_GLIBCXX11_USE_C99_STDIO, 1, |
| [Define if C99 functions or macros in <stdio.h> should be imported |
| in <cstdio> in namespace std for C++11.]) |
| fi |
| |
| # Check for the existence in <stdlib.h> of lldiv_t, et. al. |
| AC_MSG_CHECKING([for ISO C99 support in <stdlib.h> for C++11]) |
| AC_CACHE_VAL(glibcxx_cv_c99_stdlib_cxx11, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <stdlib.h> |
| 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); |
| ], [glibcxx_cv_c99_stdlib_cxx11=yes], [glibcxx_cv_c99_stdlib_cxx11=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_c99_stdlib_cxx11) |
| if test x"$glibcxx_cv_c99_stdlib_cxx11" = x"yes"; then |
| AC_DEFINE(_GLIBCXX11_USE_C99_STDLIB, 1, |
| [Define if C99 functions or macros in <stdlib.h> should be imported |
| in <cstdlib> in namespace std for C++11.]) |
| fi |
| |
| # Check for the existence in <wchar.h> of wcstold, etc. |
| if test x"$ac_has_wchar_h" = xyes && |
| test x"$ac_has_wctype_h" = xyes; then |
| AC_MSG_CHECKING([for ISO C99 support in <wchar.h> for C++11]) |
| AC_CACHE_VAL(glibcxx_cv_c99_wchar_cxx11, [ |
| AC_TRY_COMPILE([#include <wchar.h> |
| namespace test |
| { |
| using ::wcstold; |
| using ::wcstoll; |
| using ::wcstoull; |
| } |
| ], [], [glibcxx_cv_c99_wchar_cxx11=yes], [glibcxx_cv_c99_wchar_cxx11=no]) |
| ]) |
| |
| # Checks for wide character functions that may not be present. |
| # Injection of these is wrapped with guard macros. |
| # NB: only put functions here, instead of immediately above, if |
| # absolutely necessary. |
| AC_TRY_COMPILE([#include <wchar.h> |
| namespace test { using ::vfwscanf; }], [], |
| [AC_DEFINE(HAVE_VFWSCANF, 1, [Defined if vfwscanf exists.])], []) |
| |
| AC_TRY_COMPILE([#include <wchar.h> |
| namespace test { using ::vswscanf; }], [], |
| [AC_DEFINE(HAVE_VSWSCANF, 1, [Defined if vswscanf exists.])], []) |
| |
| AC_TRY_COMPILE([#include <wchar.h> |
| namespace test { using ::vwscanf; }], [], |
| [AC_DEFINE(HAVE_VWSCANF, 1, [Defined if vwscanf exists.])], []) |
| |
| AC_TRY_COMPILE([#include <wchar.h> |
| namespace test { using ::wcstof; }], [], |
| [AC_DEFINE(HAVE_WCSTOF, 1, [Defined if wcstof exists.])], []) |
| |
| AC_TRY_COMPILE([#include <wctype.h>], |
| [wint_t t; int i = iswblank(t);], |
| [AC_DEFINE(HAVE_ISWBLANK, 1, [Defined if iswblank exists.])], []) |
| |
| AC_MSG_RESULT($glibcxx_cv_c99_wchar_cxx11) |
| if test x"$glibcxx_cv_c99_wchar_cxx11" = x"yes"; then |
| AC_DEFINE(_GLIBCXX11_USE_C99_WCHAR, 1, |
| [Define if C99 functions or macros in <wchar.h> should be imported |
| in <cwchar> in namespace std for C++11.]) |
| fi |
| fi |
| |
| gcc_no_link="$ac_save_gcc_no_link" |
| LIBS="$ac_save_LIBS" |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| fi |
| |
| AC_MSG_CHECKING([for fully enabled ISO C99 support]) |
| AC_MSG_RESULT($enable_c99) |
| ]) |
| |
| |
| dnl |
| dnl Check for clock_gettime, nanosleep and sched_yield, used in the |
| dnl implementation of 20.11.7 [time.clock], and 30.3.2 [thread.thread.this] |
| dnl in the C++11 standard. |
| dnl |
| dnl --enable-libstdcxx-time |
| dnl --enable-libstdcxx-time=yes |
| dnl checks for the availability of monotonic and realtime clocks, |
| dnl nanosleep and sched_yield in libc. |
| dnl --enable-libstdcxx-time=rt |
| dnl also searches (and, if needed, links) librt. Note that this is |
| dnl not always desirable because, in glibc 2.16 and earlier, for |
| dnl example, in turn it triggers the linking of libpthread too, |
| dnl which activates locking, |
| dnl a large overhead for single-thread programs. |
| dnl --enable-libstdcxx-time=no |
| dnl --disable-libstdcxx-time |
| dnl disables the checks completely |
| dnl |
| dnl N.B. Darwin provides nanosleep but doesn't support the whole POSIX |
| dnl Timers option, so doesn't define _POSIX_TIMERS. Because the test |
| dnl below fails Darwin unconditionally defines _GLIBCXX_USE_NANOSLEEP in |
| dnl os_defines.h and also defines _GLIBCXX_USE_SCHED_YIELD. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [ |
| |
| GLIBCXX_ENABLE(libstdcxx-time,auto,[[[=KIND]]], |
| [use KIND for check type], |
| [permit yes|no|rt]) |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| ac_save_LIBS="$LIBS" |
| |
| ac_has_clock_monotonic=no |
| ac_has_clock_realtime=no |
| ac_has_nanosleep=no |
| ac_has_sched_yield=no |
| |
| if test x"$enable_libstdcxx_time" = x"auto"; then |
| |
| case "${target_os}" in |
| cygwin*) |
| ac_has_nanosleep=yes |
| ;; |
| darwin*) |
| ac_has_nanosleep=yes |
| ac_has_sched_yield=yes |
| ;; |
| # VxWorks has nanosleep as soon as the kernel is configured with |
| # INCLUDE_POSIX_TIMERS, which is normally/most-often the case. |
| vxworks*) |
| ac_has_nanosleep=yes |
| ;; |
| gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu) |
| # Don't use link test for freestanding library, in case gcc_no_link=yes |
| if test x"$is_hosted" = xyes; then |
| # Versions of glibc before 2.17 needed -lrt for clock_gettime. |
| AC_SEARCH_LIBS(clock_gettime, [rt]) |
| if test x"$ac_cv_search_clock_gettime" = x"none required"; then |
| ac_has_clock_monotonic=yes |
| ac_has_clock_realtime=yes |
| fi |
| fi |
| ac_has_nanosleep=yes |
| ac_has_sched_yield=yes |
| ;; |
| freebsd*|netbsd*|dragonfly*|rtems*) |
| ac_has_clock_monotonic=yes |
| ac_has_clock_realtime=yes |
| ac_has_nanosleep=yes |
| ac_has_sched_yield=yes |
| ;; |
| openbsd*) |
| ac_has_clock_monotonic=yes |
| ac_has_clock_realtime=yes |
| ac_has_nanosleep=yes |
| ;; |
| solaris*) |
| ac_has_clock_monotonic=yes |
| ac_has_clock_realtime=yes |
| ac_has_nanosleep=yes |
| ac_has_sched_yield=yes |
| ;; |
| uclinux*) |
| ac_has_nanosleep=yes |
| ac_has_sched_yield=yes |
| esac |
| |
| elif test x"$enable_libstdcxx_time" != x"no"; then |
| |
| if test x"$enable_libstdcxx_time" = x"rt"; then |
| AC_SEARCH_LIBS(clock_gettime, [rt]) |
| AC_SEARCH_LIBS(nanosleep, [rt]) |
| else |
| AC_CHECK_FUNC(clock_gettime) |
| AC_CHECK_FUNC(nanosleep) |
| fi |
| |
| case "$ac_cv_search_clock_gettime" in |
| -l*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime |
| ;; |
| esac |
| case "$ac_cv_search_nanosleep" in |
| -l*) GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_nanosleep" |
| ;; |
| esac |
| |
| AC_SEARCH_LIBS(sched_yield, [rt]) |
| |
| case "$ac_cv_search_sched_yield" in |
| -lrt*) |
| if test x"$enable_libstdcxx_time" = x"rt"; then |
| GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield" |
| ac_has_sched_yield=yes |
| fi |
| ;; |
| *) |
| ac_has_sched_yield=yes |
| ;; |
| esac |
| |
| AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no) |
| |
| if test x"$ac_has_unistd_h" = x"yes"; then |
| AC_MSG_CHECKING([for monotonic clock]) |
| AC_TRY_LINK( |
| [#include <unistd.h> |
| #include <time.h> |
| ], |
| [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK) |
| timespec tp; |
| #endif |
| clock_gettime(CLOCK_MONOTONIC, &tp); |
| ], [ac_has_clock_monotonic=yes], [ac_has_clock_monotonic=no]) |
| |
| AC_MSG_RESULT($ac_has_clock_monotonic) |
| |
| AC_MSG_CHECKING([for realtime clock]) |
| AC_TRY_LINK( |
| [#include <unistd.h> |
| #include <time.h> |
| ], |
| [#if _POSIX_TIMERS > 0 |
| timespec tp; |
| #endif |
| clock_gettime(CLOCK_REALTIME, &tp); |
| ], [ac_has_clock_realtime=yes], [ac_has_clock_realtime=no]) |
| |
| AC_MSG_RESULT($ac_has_clock_realtime) |
| |
| AC_MSG_CHECKING([for nanosleep]) |
| AC_TRY_LINK( |
| [#include <unistd.h> |
| #include <time.h> |
| ], |
| [#if _POSIX_TIMERS > 0 |
| timespec tp; |
| #endif |
| nanosleep(&tp, 0); |
| ], [ac_has_nanosleep=yes], [ac_has_nanosleep=no]) |
| |
| AC_MSG_RESULT($ac_has_nanosleep) |
| fi |
| fi |
| |
| if test x"$ac_has_clock_monotonic" != x"yes"; then |
| case ${target_os} in |
| linux* | uclinux*) |
| AC_MSG_CHECKING([for clock_gettime syscall]) |
| AC_TRY_COMPILE( |
| [#include <unistd.h> |
| #include <time.h> |
| #include <sys/syscall.h> |
| ], |
| [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK) |
| timespec tp; |
| #endif |
| syscall(SYS_clock_gettime, CLOCK_MONOTONIC, &tp); |
| syscall(SYS_clock_gettime, CLOCK_REALTIME, &tp); |
| ], [ac_has_clock_gettime_syscall=yes], [ac_has_clock_gettime_syscall=no]) |
| AC_MSG_RESULT($ac_has_clock_gettime_syscall) |
| if test x"$ac_has_clock_gettime_syscall" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_CLOCK_GETTIME_SYSCALL, 1, |
| [Defined if clock_gettime syscall has monotonic and realtime clock support. ]) |
| ac_has_clock_monotonic=yes |
| ac_has_clock_realtime=yes |
| AC_MSG_CHECKING([for struct timespec that matches syscall]) |
| AC_TRY_COMPILE( |
| [#include <time.h> |
| #include <sys/syscall.h> |
| ], |
| [#ifdef SYS_clock_gettime64 |
| #if SYS_clock_gettime64 != SYS_clock_gettime |
| // We need to use SYS_clock_gettime and libc appears to |
| // also know about the SYS_clock_gettime64 syscall. |
| // Check that userspace doesn't use time64 version of timespec. |
| static_assert(sizeof(timespec::tv_sec) == sizeof(long), |
| "struct timespec must be compatible with SYS_clock_gettime"); |
| #endif |
| #endif |
| ], |
| [ac_timespec_matches_syscall=yes], |
| [ac_timespec_matches_syscall=no]) |
| AC_MSG_RESULT($ac_timespec_matches_syscall) |
| if test x"$ac_timespec_matches_syscall" = no; then |
| AC_MSG_ERROR([struct timespec is not compatible with SYS_clock_gettime, please report a bug to http://gcc.gnu.org/bugzilla]) |
| fi |
| fi;; |
| esac |
| fi |
| |
| if test x"$ac_has_clock_monotonic" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1, |
| [ Defined if clock_gettime has monotonic clock support. ]) |
| fi |
| |
| if test x"$ac_has_clock_realtime" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_CLOCK_REALTIME, 1, |
| [ Defined if clock_gettime has realtime clock support. ]) |
| fi |
| |
| if test x"$ac_has_sched_yield" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1, |
| [ Defined if sched_yield is available. ]) |
| fi |
| |
| if test x"$ac_has_nanosleep" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_NANOSLEEP, 1, |
| [ Defined if nanosleep is available. ]) |
| else |
| AC_MSG_CHECKING([for sleep]) |
| AC_TRY_COMPILE([#include <unistd.h>], |
| [sleep(1)], |
| [ac_has_sleep=yes],[ac_has_sleep=no]) |
| if test x"$ac_has_sleep" = x"yes"; then |
| AC_DEFINE(HAVE_SLEEP,1, [Defined if sleep exists.]) |
| fi |
| AC_MSG_RESULT($ac_has_sleep) |
| AC_MSG_CHECKING([for usleep]) |
| AC_TRY_COMPILE([#include <unistd.h>], |
| [sleep(1); |
| usleep(100);], |
| [ac_has_usleep=yes],[ac_has_usleep=no]) |
| if test x"$ac_has_usleep" = x"yes"; then |
| AC_DEFINE(HAVE_USLEEP,1, [Defined if usleep exists.]) |
| fi |
| AC_MSG_RESULT($ac_has_usleep) |
| fi |
| |
| if test x"$ac_has_nanosleep$ac_has_sleep" = x"nono"; then |
| ac_no_sleep=yes |
| AC_MSG_CHECKING([for Sleep]) |
| AC_TRY_COMPILE([#include <windows.h>], |
| [Sleep(1)], |
| [ac_has_win32_sleep=yes],[ac_has_win32_sleep=no]) |
| if test x"$ac_has_win32_sleep" = x"yes"; then |
| AC_DEFINE(HAVE_WIN32_SLEEP,1, [Defined if Sleep exists.]) |
| ac_no_sleep=no |
| fi |
| AC_MSG_RESULT($ac_has_win32_sleep) |
| fi |
| |
| if test x"$ac_no_sleep" = x"yes"; then |
| AC_DEFINE(NO_SLEEP,1, [Defined if no way to sleep is available.]) |
| fi |
| |
| AC_SUBST(GLIBCXX_LIBS) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| LIBS="$ac_save_LIBS" |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check for gettimeofday, used in the implementation of 20.11.7 |
| dnl [time.clock] in the C++11 standard. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [ |
| |
| AC_MSG_CHECKING([for gettimeofday]) |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| |
| ac_has_gettimeofday=no; |
| AC_CHECK_HEADERS(sys/time.h, ac_has_sys_time_h=yes, ac_has_sys_time_h=no) |
| if test x"$ac_has_sys_time_h" = x"yes"; then |
| AC_MSG_CHECKING([for gettimeofday]) |
| GCC_TRY_COMPILE_OR_LINK([#include <sys/time.h>], |
| [timeval tv; gettimeofday(&tv, 0);], |
| [ac_has_gettimeofday=yes], [ac_has_gettimeofday=no]) |
| |
| AC_MSG_RESULT($ac_has_gettimeofday) |
| fi |
| |
| if test x"$ac_has_gettimeofday" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_GETTIMEOFDAY, 1, |
| [ Defined if gettimeofday is available. ]) |
| fi |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check for ISO/IEC 9899:1999 "C99" support to ISO/IEC DTR 19768 "TR1" |
| dnl facilities in Chapter 8, "C compatibility". |
| dnl |
| 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.h> complex math functions used |
| # by tr1/complex. |
| AC_CHECK_HEADERS(complex.h, ac_has_complex_h=yes, ac_has_complex_h=no) |
| ac_c99_complex_tr1=no; |
| if test x"$ac_has_complex_h" = x"yes"; then |
| AC_MSG_CHECKING([for ISO C99 support to TR1 in <complex.h>]) |
| AC_TRY_COMPILE([#include <complex.h>], |
| [typedef __complex__ float float_type; float_type tmpf; |
| cacosf(tmpf); |
| casinf(tmpf); |
| catanf(tmpf); |
| cacoshf(tmpf); |
| casinhf(tmpf); |
| catanhf(tmpf); |
| typedef __complex__ double double_type; double_type tmpd; |
| cacos(tmpd); |
| casin(tmpd); |
| catan(tmpd); |
| cacosh(tmpd); |
| casinh(tmpd); |
| catanh(tmpd); |
| typedef __complex__ long double ld_type; ld_type tmpld; |
| cacosl(tmpld); |
| casinl(tmpld); |
| catanl(tmpld); |
| cacoshl(tmpld); |
| casinhl(tmpld); |
| catanhl(tmpld); |
| ],[ac_c99_complex_tr1=yes], [ac_c99_complex_tr1=no]) |
| fi |
| AC_MSG_RESULT($ac_c99_complex_tr1) |
| if test x"$ac_c99_complex_tr1" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX_TR1, 1, |
| [Define if C99 functions in <complex.h> should be used in |
| <tr1/complex>. Using compiler builtins for these functions |
| requires corresponding C99 library functions to be present.]) |
| fi |
| |
| # Check for the existence of <ctype.h> functions. |
| AC_MSG_CHECKING([for ISO C99 support to TR1 in <ctype.h>]) |
| AC_CACHE_VAL(glibcxx_cv_c99_ctype_tr1, [ |
| AC_TRY_COMPILE([#include <ctype.h>], |
| [int ch; |
| int ret; |
| ret = isblank(ch); |
| ],[glibcxx_cv_c99_ctype_tr1=yes], |
| [glibcxx_cv_c99_ctype_tr1=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_c99_ctype_tr1) |
| if test x"$glibcxx_cv_c99_ctype_tr1" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_C99_CTYPE_TR1, 1, |
| [Define if C99 functions in <ctype.h> should be imported in |
| <tr1/cctype> in namespace std::tr1.]) |
| fi |
| |
| # Check for the existence of <fenv.h> functions. |
| AC_CHECK_HEADERS(fenv.h, ac_has_fenv_h=yes, ac_has_fenv_h=no) |
| ac_c99_fenv_tr1=no; |
| if test x"$ac_has_fenv_h" = x"yes"; then |
| AC_MSG_CHECKING([for ISO C99 support to TR1 in <fenv.h>]) |
| AC_TRY_COMPILE([#include <fenv.h>], |
| [int except, mode; |
| fexcept_t* pflag; |
| fenv_t* penv; |
| int ret; |
| ret = feclearexcept(except); |
| ret = fegetexceptflag(pflag, except); |
| ret = feraiseexcept(except); |
| ret = fesetexceptflag(pflag, except); |
| ret = fetestexcept(except); |
| ret = fegetround(); |
| ret = fesetround(mode); |
| ret = fegetenv(penv); |
| ret = feholdexcept(penv); |
| ret = fesetenv(penv); |
| ret = feupdateenv(penv); |
| ],[ac_c99_fenv_tr1=yes], [ac_c99_fenv_tr1=no]) |
| fi |
| AC_MSG_RESULT($ac_c99_fenv_tr1) |
| if test x"$ac_c99_fenv_tr1" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_C99_FENV_TR1, 1, |
| [Define if C99 functions in <fenv.h> should be imported in |
| <tr1/cfenv> in namespace std::tr1.]) |
| fi |
| |
| # Check for the existence of <stdint.h> types. |
| AC_MSG_CHECKING([for ISO C99 support to TR1 in <stdint.h>]) |
| AC_CACHE_VAL(glibcxx_cv_c99_stdint_tr1, [ |
| AC_TRY_COMPILE([#define __STDC_LIMIT_MACROS |
| #define __STDC_CONSTANT_MACROS |
| #include <stdint.h>], |
| [typedef int8_t my_int8_t; |
| my_int8_t i8 = INT8_MIN; |
| i8 = INT8_MAX; |
| typedef int16_t my_int16_t; |
| my_int16_t i16 = INT16_MIN; |
| i16 = INT16_MAX; |
| typedef int32_t my_int32_t; |
| my_int32_t i32 = INT32_MIN; |
| i32 = INT32_MAX; |
| typedef int64_t my_int64_t; |
| my_int64_t i64 = INT64_MIN; |
| i64 = INT64_MAX; |
| typedef int_fast8_t my_int_fast8_t; |
| my_int_fast8_t if8 = INT_FAST8_MIN; |
| if8 = INT_FAST8_MAX; |
| typedef int_fast16_t my_int_fast16_t; |
| my_int_fast16_t if16 = INT_FAST16_MIN; |
| if16 = INT_FAST16_MAX; |
| typedef int_fast32_t my_int_fast32_t; |
| my_int_fast32_t if32 = INT_FAST32_MIN; |
| if32 = INT_FAST32_MAX; |
| typedef int_fast64_t my_int_fast64_t; |
| my_int_fast64_t if64 = INT_FAST64_MIN; |
| if64 = INT_FAST64_MAX; |
| typedef int_least8_t my_int_least8_t; |
| my_int_least8_t il8 = INT_LEAST8_MIN; |
| il8 = INT_LEAST8_MAX; |
| typedef int_least16_t my_int_least16_t; |
| my_int_least16_t il16 = INT_LEAST16_MIN; |
| il16 = INT_LEAST16_MAX; |
| typedef int_least32_t my_int_least32_t; |
| my_int_least32_t il32 = INT_LEAST32_MIN; |
| il32 = INT_LEAST32_MAX; |
| typedef int_least64_t my_int_least64_t; |
| my_int_least64_t il64 = INT_LEAST64_MIN; |
| il64 = INT_LEAST64_MAX; |
| typedef intmax_t my_intmax_t; |
| my_intmax_t im = INTMAX_MAX; |
| im = INTMAX_MIN; |
| typedef intptr_t my_intptr_t; |
| my_intptr_t ip = INTPTR_MAX; |
| ip = INTPTR_MIN; |
| typedef uint8_t my_uint8_t; |
| my_uint8_t ui8 = UINT8_MAX; |
| ui8 = UINT8_MAX; |
| typedef uint16_t my_uint16_t; |
| my_uint16_t ui16 = UINT16_MAX; |
| ui16 = UINT16_MAX; |
| typedef uint32_t my_uint32_t; |
| my_uint32_t ui32 = UINT32_MAX; |
| ui32 = UINT32_MAX; |
| typedef uint64_t my_uint64_t; |
| my_uint64_t ui64 = UINT64_MAX; |
| ui64 = UINT64_MAX; |
| typedef uint_fast8_t my_uint_fast8_t; |
| my_uint_fast8_t uif8 = UINT_FAST8_MAX; |
| uif8 = UINT_FAST8_MAX; |
| typedef uint_fast16_t my_uint_fast16_t; |
| my_uint_fast16_t uif16 = UINT_FAST16_MAX; |
| uif16 = UINT_FAST16_MAX; |
| typedef uint_fast32_t my_uint_fast32_t; |
| my_uint_fast32_t uif32 = UINT_FAST32_MAX; |
| uif32 = UINT_FAST32_MAX; |
| typedef uint_fast64_t my_uint_fast64_t; |
| my_uint_fast64_t uif64 = UINT_FAST64_MAX; |
| uif64 = UINT_FAST64_MAX; |
| typedef uint_least8_t my_uint_least8_t; |
| my_uint_least8_t uil8 = UINT_LEAST8_MAX; |
| uil8 = UINT_LEAST8_MAX; |
| typedef uint_least16_t my_uint_least16_t; |
| my_uint_least16_t uil16 = UINT_LEAST16_MAX; |
| uil16 = UINT_LEAST16_MAX; |
| typedef uint_least32_t my_uint_least32_t; |
| my_uint_least32_t uil32 = UINT_LEAST32_MAX; |
| uil32 = UINT_LEAST32_MAX; |
| typedef uint_least64_t my_uint_least64_t; |
| my_uint_least64_t uil64 = UINT_LEAST64_MAX; |
| uil64 = UINT_LEAST64_MAX; |
| typedef uintmax_t my_uintmax_t; |
| my_uintmax_t uim = UINTMAX_MAX; |
| uim = UINTMAX_MAX; |
| typedef uintptr_t my_uintptr_t; |
| my_uintptr_t uip = UINTPTR_MAX; |
| uip = UINTPTR_MAX; |
| ],[glibcxx_cv_c99_stdint_tr1=yes], |
| [glibcxx_cv_c99_stdint_tr1=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_c99_stdint_tr1) |
| if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_C99_STDINT_TR1, 1, |
| [Define if C99 types in <stdint.h> should be imported in |
| <tr1/cstdint> in namespace std::tr1.]) |
| fi |
| |
| # Check for the existence of <math.h> functions. |
| AC_MSG_CHECKING([for ISO C99 support to TR1 in <math.h>]) |
| AC_CACHE_VAL(glibcxx_cv_c99_math_tr1, [ |
| AC_TRY_COMPILE([#include <math.h>], |
| [typedef double_t my_double_t; |
| typedef float_t my_float_t; |
| acosh(0.0); |
| acoshf(0.0f); |
| acoshl(0.0l); |
| asinh(0.0); |
| asinhf(0.0f); |
| asinhl(0.0l); |
| atanh(0.0); |
| atanhf(0.0f); |
| atanhl(0.0l); |
| cbrt(0.0); |
| cbrtf(0.0f); |
| cbrtl(0.0l); |
| copysign(0.0, 0.0); |
| copysignf(0.0f, 0.0f); |
| copysignl(0.0l, 0.0l); |
| erf(0.0); |
| erff(0.0f); |
| erfl(0.0l); |
| erfc(0.0); |
| erfcf(0.0f); |
| erfcl(0.0l); |
| exp2(0.0); |
| exp2f(0.0f); |
| exp2l(0.0l); |
| expm1(0.0); |
| expm1f(0.0f); |
| expm1l(0.0l); |
| fdim(0.0, 0.0); |
| fdimf(0.0f, 0.0f); |
| fdiml(0.0l, 0.0l); |
| fma(0.0, 0.0, 0.0); |
| fmaf(0.0f, 0.0f, 0.0f); |
| fmal(0.0l, 0.0l, 0.0l); |
| fmax(0.0, 0.0); |
| fmaxf(0.0f, 0.0f); |
| fmaxl(0.0l, 0.0l); |
| fmin(0.0, 0.0); |
| fminf(0.0f, 0.0f); |
| fminl(0.0l, 0.0l); |
| hypot(0.0, 0.0); |
| hypotf(0.0f, 0.0f); |
| hypotl(0.0l, 0.0l); |
| ilogb(0.0); |
| ilogbf(0.0f); |
| ilogbl(0.0l); |
| lgamma(0.0); |
| lgammaf(0.0f); |
| lgammal(0.0l); |
| #ifndef __APPLE__ /* see below */ |
| llrint(0.0); |
| llrintf(0.0f); |
| llrintl(0.0l); |
| llround(0.0); |
| llroundf(0.0f); |
| llroundl(0.0l); |
| #endif |
| log1p(0.0); |
| log1pf(0.0f); |
| log1pl(0.0l); |
| log2(0.0); |
| log2f(0.0f); |
| log2l(0.0l); |
| logb(0.0); |
| logbf(0.0f); |
| logbl(0.0l); |
| lrint(0.0); |
| lrintf(0.0f); |
| lrintl(0.0l); |
| lround(0.0); |
| lroundf(0.0f); |
| lroundl(0.0l); |
| nan(0); |
| nanf(0); |
| nanl(0); |
| nearbyint(0.0); |
| nearbyintf(0.0f); |
| nearbyintl(0.0l); |
| nextafter(0.0, 0.0); |
| nextafterf(0.0f, 0.0f); |
| nextafterl(0.0l, 0.0l); |
| nexttoward(0.0, 0.0); |
| nexttowardf(0.0f, 0.0f); |
| nexttowardl(0.0l, 0.0l); |
| remainder(0.0, 0.0); |
| remainderf(0.0f, 0.0f); |
| remainderl(0.0l, 0.0l); |
| remquo(0.0, 0.0, 0); |
| remquof(0.0f, 0.0f, 0); |
| remquol(0.0l, 0.0l, 0); |
| rint(0.0); |
| rintf(0.0f); |
| rintl(0.0l); |
| round(0.0); |
| roundf(0.0f); |
| roundl(0.0l); |
| scalbln(0.0, 0l); |
| scalblnf(0.0f, 0l); |
| scalblnl(0.0l, 0l); |
| scalbn(0.0, 0); |
| scalbnf(0.0f, 0); |
| scalbnl(0.0l, 0); |
| tgamma(0.0); |
| tgammaf(0.0f); |
| tgammal(0.0l); |
| trunc(0.0); |
| truncf(0.0f); |
| truncl(0.0l); |
| ],[glibcxx_cv_c99_math_tr1=yes], [glibcxx_cv_c99_math_tr1=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_c99_math_tr1) |
| if test x"$glibcxx_cv_c99_math_tr1" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_C99_MATH_TR1, 1, |
| [Define if C99 functions or macros in <math.h> should be imported |
| in <tr1/cmath> in namespace std::tr1.]) |
| |
| case "${target_os}" in |
| darwin*) |
| AC_MSG_CHECKING([for ISO C99 rounding functions in <math.h>]) |
| AC_CACHE_VAL(glibcxx_cv_c99_math_llround, [ |
| AC_TRY_COMPILE([#include <math.h>], |
| [llrint(0.0); |
| llrintf(0.0f); |
| llrintl(0.0l); |
| llround(0.0); |
| llroundf(0.0f); |
| llroundl(0.0l); |
| ], |
| [glibcxx_cv_c99_math_llround=yes], |
| [glibcxx_cv_c99_math_llround=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_c99_math_llround) |
| ;; |
| esac |
| if test x"$glibcxx_cv_c99_math_llround" = x"no"; then |
| AC_DEFINE(_GLIBCXX_NO_C99_ROUNDING_FUNCS, 1, |
| [Define if C99 llrint and llround functions are missing from <math.h>.]) |
| fi |
| fi |
| |
| # Check for the existence of <inttypes.h> functions (NB: doesn't make |
| # sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1). |
| ac_c99_inttypes_tr1=no; |
| if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then |
| AC_MSG_CHECKING([for ISO C99 support to TR1 in <inttypes.h>]) |
| AC_TRY_COMPILE([#include <inttypes.h>], |
| [intmax_t i, numer, denom, base; |
| const char* s; |
| char** endptr; |
| intmax_t ret = imaxabs(i); |
| imaxdiv_t dret = imaxdiv(numer, denom); |
| ret = strtoimax(s, endptr, base); |
| uintmax_t uret = strtoumax(s, endptr, base); |
| ],[ac_c99_inttypes_tr1=yes], [ac_c99_inttypes_tr1=no]) |
| fi |
| AC_MSG_RESULT($ac_c99_inttypes_tr1) |
| if test x"$ac_c99_inttypes_tr1" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_TR1, 1, |
| [Define if C99 functions in <inttypes.h> should be imported in |
| <tr1/cinttypes> in namespace std::tr1.]) |
| fi |
| |
| # Check for the existence of wchar_t <inttypes.h> functions (NB: doesn't |
| # make sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1). |
| ac_c99_inttypes_wchar_t_tr1=no; |
| if test x"$glibcxx_cv_c99_stdint_tr1" = x"yes"; then |
| AC_MSG_CHECKING([for wchar_t ISO C99 support to TR1 in <inttypes.h>]) |
| AC_TRY_COMPILE([#include <inttypes.h>], |
| [intmax_t base; |
| const wchar_t* s; |
| wchar_t** endptr; |
| intmax_t ret = wcstoimax(s, endptr, base); |
| uintmax_t uret = wcstoumax(s, endptr, base); |
| ],[ac_c99_inttypes_wchar_t_tr1=yes], |
| [ac_c99_inttypes_wchar_t_tr1=no]) |
| fi |
| AC_MSG_RESULT($ac_c99_inttypes_wchar_t_tr1) |
| if test x"$ac_c99_inttypes_wchar_t_tr1" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1, 1, |
| [Define if wchar_t C99 functions in <inttypes.h> should be |
| imported in <tr1/cinttypes> in namespace std::tr1.]) |
| fi |
| |
| # Check for the existence of the <stdbool.h> header. |
| AC_CHECK_HEADERS(stdbool.h) |
| |
| # Check for the existence of the <stdalign.h> header. |
| AC_CHECK_HEADERS(stdalign.h) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check for uchar.h and usability. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_UCHAR_H], [ |
| |
| # Test uchar.h. |
| AC_CHECK_HEADERS(uchar.h, ac_has_uchar_h=yes, ac_has_uchar_h=no) |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -std=c++11" |
| |
| if test x"$ac_has_uchar_h" = x"yes"; then |
| AC_MSG_CHECKING([for ISO C11 support for <uchar.h>]) |
| AC_TRY_COMPILE([#include <uchar.h> |
| #ifdef __STDC_UTF_16__ |
| long i = __STDC_UTF_16__; |
| #endif |
| #ifdef __STDC_UTF_32__ |
| long j = __STDC_UTF_32__; |
| #endif |
| namespace test |
| { |
| using ::c16rtomb; |
| using ::c32rtomb; |
| using ::mbrtoc16; |
| using ::mbrtoc32; |
| } |
| ], |
| [], [ac_c11_uchar_cxx11=yes], [ac_c11_uchar_cxx11=no]) |
| else |
| ac_c11_uchar_cxx11=no |
| fi |
| AC_MSG_RESULT($ac_c11_uchar_cxx11) |
| if test x"$ac_c11_uchar_cxx11" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_C11_UCHAR_CXX11, 1, |
| [Define if C11 functions in <uchar.h> should be imported into |
| namespace std in <cuchar>.]) |
| fi |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| |
| dnl |
| dnl Check whether "/dev/random" and "/dev/urandom" are available for |
| dnl class std::random_device from C++ 2011 [rand.device], and |
| dnl random_device of "TR1" (Chapter 5.1, "Random number generation"). |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_DEV_RANDOM], [ |
| |
| AC_MSG_CHECKING([for "/dev/random" and "/dev/urandom" for std::random_device]) |
| AC_CACHE_VAL(glibcxx_cv_dev_random, [ |
| if test -r /dev/random && test -r /dev/urandom; then |
| ## For MSys environment the test above is detected as false-positive |
| ## on mingw-targets. So disable it explicitly for them. |
| case ${target_os} in |
| *mingw*) glibcxx_cv_dev_random=no ;; |
| *) glibcxx_cv_dev_random=yes ;; |
| esac |
| else |
| glibcxx_cv_dev_random=no; |
| fi |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_dev_random) |
| |
| if test x"$glibcxx_cv_dev_random" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_USE_DEV_RANDOM, 1, |
| [Define if /dev/random and /dev/urandom are available for |
| std::random_device.]) |
| 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 Compute the EOF, SEEK_CUR, and SEEK_END integer constants. |
| dnl |
| AC_DEFUN([GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS], [ |
| |
| AC_CACHE_CHECK([for the value of EOF], glibcxx_cv_stdio_eof, [ |
| AC_COMPUTE_INT([glibcxx_cv_stdio_eof], [[EOF]], |
| [#include <stdio.h>], |
| [AC_MSG_ERROR([computing EOF failed])]) |
| ]) |
| AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_EOF, $glibcxx_cv_stdio_eof, |
| [Define to the value of the EOF integer constant.]) |
| |
| AC_CACHE_CHECK([for the value of SEEK_CUR], glibcxx_cv_stdio_seek_cur, [ |
| AC_COMPUTE_INT([glibcxx_cv_stdio_seek_cur], [[SEEK_CUR]], |
| [#include <stdio.h>], |
| [AC_MSG_ERROR([computing SEEK_CUR failed])]) |
| ]) |
| AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_CUR, $glibcxx_cv_stdio_seek_cur, |
| [Define to the value of the SEEK_CUR integer constant.]) |
| |
| AC_CACHE_CHECK([for the value of SEEK_END], glibcxx_cv_stdio_seek_end, [ |
| AC_COMPUTE_INT([glibcxx_cv_stdio_seek_end], [[SEEK_END]], |
| [#include <stdio.h>], |
| [AC_MSG_ERROR([computing SEEK_END failed])]) |
| ]) |
| AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_END, $glibcxx_cv_stdio_seek_end, |
| [Define to the value of the SEEK_END integer constant.]) |
| ]) |
| |
| dnl |
| dnl Check whether required C++ overloads are present in <stdio.h>. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_STDIO_PROTO], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| # Use C++11 because a conforming <stdio.h> won't define gets for C++14, |
| # and we don't need a declaration for C++14 anyway. |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -std=gnu++11" |
| |
| AC_MSG_CHECKING([for gets declaration]) |
| AC_CACHE_VAL(glibcxx_cv_gets, [ |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE( |
| [#include <stdio.h> |
| namespace test |
| { |
| using ::gets; |
| } |
| ])], |
| [glibcxx_cv_gets=yes], |
| [glibcxx_cv_gets=no] |
| )]) |
| |
| if test $glibcxx_cv_gets = yes; then |
| AC_DEFINE(HAVE_GETS, 1, [Define if gets is available in <stdio.h> before C++14.]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_gets) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check whether required C++11 overloads for floating point and integral |
| dnl types are present in <math.h>. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_MATH11_PROTO], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -std=c++11" |
| |
| case "$host" in |
| *-*-solaris2.*) |
| # Solaris 12 Build 86, Solaris 11.3 SRU 3.6, and Solaris 10 Patch |
| # 11996[67]-02 introduced the C++11 <math.h> floating point overloads. |
| AC_MSG_CHECKING([for C++11 <math.h> floating point overloads]) |
| AC_CACHE_VAL(glibcxx_cv_math11_fp_overload, [ |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE( |
| [#include <math.h> |
| #undef isfinite |
| namespace std { |
| inline bool isfinite(float __x) |
| { return __builtin_isfinite(__x); } |
| } |
| ])], |
| [glibcxx_cv_math11_fp_overload=no], |
| [glibcxx_cv_math11_fp_overload=yes] |
| )]) |
| |
| # autoheader cannot handle indented templates. |
| AH_VERBATIM([__CORRECT_ISO_CPP11_MATH_H_PROTO_FP], |
| [/* Define if all C++11 floating point overloads are available in <math.h>. */ |
| #if __cplusplus >= 201103L |
| #undef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP |
| #endif]) |
| |
| if test $glibcxx_cv_math11_fp_overload = yes; then |
| AC_DEFINE(__CORRECT_ISO_CPP11_MATH_H_PROTO_FP) |
| fi |
| AC_MSG_RESULT([$glibcxx_cv_math11_fp_overload]) |
| |
| # Solaris 12 Build 90, Solaris 11.3 SRU 5.6, and Solaris 10 Patch |
| # 11996[67]-02 introduced the C++11 <math.h> integral type overloads. |
| AC_MSG_CHECKING([for C++11 <math.h> integral type overloads]) |
| AC_CACHE_VAL(glibcxx_cv_math11_int_overload, [ |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE( |
| [#include <math.h> |
| namespace std { |
| template<typename _Tp> |
| struct __is_integer; |
| template<> |
| struct __is_integer<int> |
| { |
| enum { __value = 1 }; |
| }; |
| } |
| namespace __gnu_cxx { |
| template<bool, typename> |
| struct __enable_if; |
| template<typename _Tp> |
| struct __enable_if<true, _Tp> |
| { typedef _Tp __type; }; |
| } |
| namespace std { |
| template<typename _Tp> |
| constexpr typename __gnu_cxx::__enable_if |
| <__is_integer<_Tp>::__value, double>::__type |
| log2(_Tp __x) |
| { return __builtin_log2(__x); } |
| } |
| int |
| main (void) |
| { |
| int i = 1000; |
| return std::log2(i); |
| } |
| ])], |
| [glibcxx_cv_math11_int_overload=no], |
| [glibcxx_cv_math11_int_overload=yes] |
| )]) |
| |
| # autoheader cannot handle indented templates. |
| AH_VERBATIM([__CORRECT_ISO_CPP11_MATH_H_PROTO_INT], |
| [/* Define if all C++11 integral type overloads are available in <math.h>. */ |
| #if __cplusplus >= 201103L |
| #undef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT |
| #endif]) |
| |
| if test $glibcxx_cv_math11_int_overload = yes; then |
| AC_DEFINE(__CORRECT_ISO_CPP11_MATH_H_PROTO_INT) |
| fi |
| AC_MSG_RESULT([$glibcxx_cv_math11_int_overload]) |
| ;; |
| *) |
| # If <math.h> defines the obsolete isinf(double) and isnan(double) |
| # functions (instead of or as well as the C99 generic macros) then we |
| # can't define std::isinf(double) and std::isnan(double) in <cmath> |
| # and must use the ones from <math.h> instead. |
| AC_MSG_CHECKING([for obsolete isinf function in <math.h>]) |
| AC_CACHE_VAL(glibcxx_cv_obsolete_isinf, [ |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE( |
| [#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS |
| #include <math.h> |
| #undef isinf |
| namespace std { |
| using ::isinf; |
| bool isinf(float); |
| bool isinf(long double); |
| } |
| using std::isinf; |
| bool b = isinf(0.0); |
| ])], |
| [glibcxx_cv_obsolete_isinf=yes], |
| [glibcxx_cv_obsolete_isinf=no] |
| )]) |
| AC_MSG_RESULT([$glibcxx_cv_obsolete_isinf]) |
| if test $glibcxx_cv_obsolete_isinf = yes; then |
| AC_DEFINE(HAVE_OBSOLETE_ISINF, 1, |
| [Define if <math.h> defines obsolete isinf function.]) |
| fi |
| |
| AC_MSG_CHECKING([for obsolete isnan function in <math.h>]) |
| AC_CACHE_VAL(glibcxx_cv_obsolete_isnan, [ |
| AC_COMPILE_IFELSE([AC_LANG_SOURCE( |
| [#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS |
| #include <math.h> |
| #undef isnan |
| namespace std { |
| using ::isnan; |
| bool isnan(float); |
| bool isnan(long double); |
| } |
| using std::isnan; |
| bool b = isnan(0.0); |
| ])], |
| [glibcxx_cv_obsolete_isnan=yes], |
| [glibcxx_cv_obsolete_isnan=no] |
| )]) |
| AC_MSG_RESULT([$glibcxx_cv_obsolete_isnan]) |
| if test $glibcxx_cv_obsolete_isnan = yes; then |
| AC_DEFINE(HAVE_OBSOLETE_ISNAN, 1, |
| [Define if <math.h> defines obsolete isnan function.]) |
| fi |
| ;; |
| esac |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check for what type of C headers to use. |
| 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_global' or 'c_std'. |
| dnl |
| dnl To use the obsolete 'c_std' headers use --enable-cheaders-obsolete as |
| dnl well as --enable-cheaders=c_std, otherwise configure will fail. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [ |
| GLIBCXX_ENABLE(cheaders-obsolete,no,, |
| [allow use of obsolete "C" headers for g++]) |
| GLIBCXX_ENABLE(cheaders,$1,[[[=KIND]]], |
| [construct "C" headers for g++], [permit c|c_global|c_std]) |
| AC_MSG_NOTICE("C" header strategy set to $enable_cheaders) |
| if test $enable_cheaders = c_std ; then |
| AC_MSG_WARN([the --enable-cheaders=c_std configuration is obsolete, c_global should be used instead]) |
| AC_MSG_WARN([if you are unable to use c_global please report a bug or inform libstdc++@gcc.gnu.org]) |
| if test $enable_cheaders_obsolete != yes ; then |
| AC_MSG_ERROR(use --enable-cheaders-obsolete to use c_std "C" headers) |
| fi |
| fi |
| |
| C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders |
| |
| # Allow overrides to configure.host here. |
| if test $enable_cheaders = c_global; then |
| c_compatibility=yes |
| fi |
| |
| 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) |
| ]) |
| |
| |
| dnl |
| dnl Check for which locale library to use. The choice is mapped to |
| dnl a subdirectory of config/locale. |
| dnl |
| dnl Default is generic. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [ |
| GLIBCXX_ENABLE(clocale,auto,[[[=MODEL]]], |
| [use MODEL for target locale package], |
| [permit generic|gnu|ieee_1003.1-2001|newlib|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]) |
| |
| # Either a known package, or "auto" |
| if test $enable_clocale = no || test $enable_clocale = yes; then |
| enable_clocale=auto |
| fi |
| enable_clocale_flag=$enable_clocale |
| |
| # Probe for locale model to use if none specified. |
| # Default to "generic". |
| if test $enable_clocale_flag = auto; then |
| case ${target_os} in |
| linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu) |
| enable_clocale_flag=gnu |
| ;; |
| darwin*) |
| enable_clocale_flag=darwin |
| ;; |
| vxworks*) |
| enable_clocale_flag=vxworks |
| ;; |
| dragonfly* | freebsd*) |
| enable_clocale_flag=dragonfly |
| ;; |
| openbsd*) |
| enable_clocale_flag=newlib |
| ;; |
| *) |
| if test x"$with_newlib" = x"yes"; then |
| enable_clocale_flag=newlib |
| else |
| enable_clocale_flag=generic |
| fi |
| ;; |
| esac |
| fi |
| |
| # Sanity check model, and test for special functionality. |
| if test $enable_clocale_flag = gnu; then |
| AC_EGREP_CPP([_GLIBCXX_ok], [ |
| #include <features.h> |
| #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined(__UCLIBC__) |
| _GLIBCXX_ok |
| #endif |
| ], enable_clocale_flag=gnu, enable_clocale_flag=generic) |
| |
| # Set it to scream when it hurts. |
| ac_save_CFLAGS="$CFLAGS" |
| CFLAGS="-Wimplicit-function-declaration -Werror" |
| |
| # Use strxfrm_l if available. |
| AC_TRY_COMPILE([#define _GNU_SOURCE 1 |
| #include <string.h> |
| #include <locale.h>], |
| [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 <string.h>.]),) |
| |
| # Use strerror_l if available. |
| AC_TRY_COMPILE([#define _GNU_SOURCE 1 |
| #include <string.h> |
| #include <locale.h>], |
| [__locale_t loc; strerror_l(5, loc);], |
| AC_DEFINE(HAVE_STRERROR_L, 1, |
| [Define if strerror_l is available in <string.h>.]),) |
| |
| 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 <string.h> |
| #include <locale.h>], |
| [char s[128]; strerror_r(5, s, 128);], |
| AC_DEFINE(HAVE_STRERROR_R, 1, |
| [Define if strerror_r is available in <string.h>.]),) |
| 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) |
| |
| CLOCALE_H=config/locale/generic/c_locale.h |
| CLOCALE_CC=config/locale/generic/c_locale.cc |
| CCODECVT_CC=config/locale/generic/codecvt_members.cc |
| CCOLLATE_CC=config/locale/generic/collate_members.cc |
| CCTYPE_CC=config/locale/generic/ctype_members.cc |
| CMESSAGES_H=config/locale/generic/messages_members.h |
| CMESSAGES_CC=config/locale/generic/messages_members.cc |
| CMONEY_CC=config/locale/generic/monetary_members.cc |
| CNUMERIC_CC=config/locale/generic/numeric_members.cc |
| CTIME_H=config/locale/generic/time_members.h |
| CTIME_CC=config/locale/generic/time_members.cc |
| CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
| ;; |
| darwin) |
| AC_MSG_RESULT(darwin) |
| |
| CLOCALE_H=config/locale/generic/c_locale.h |
| CLOCALE_CC=config/locale/generic/c_locale.cc |
| CCODECVT_CC=config/locale/generic/codecvt_members.cc |
| CCOLLATE_CC=config/locale/generic/collate_members.cc |
| CCTYPE_CC=config/locale/darwin/ctype_members.cc |
| CMESSAGES_H=config/locale/generic/messages_members.h |
| CMESSAGES_CC=config/locale/generic/messages_members.cc |
| CMONEY_CC=config/locale/generic/monetary_members.cc |
| CNUMERIC_CC=config/locale/generic/numeric_members.cc |
| CTIME_H=config/locale/generic/time_members.h |
| CTIME_CC=config/locale/generic/time_members.cc |
| CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
| ;; |
| vxworks) |
| AC_MSG_RESULT(vxworks) |
| |
| CLOCALE_H=config/locale/generic/c_locale.h |
| CLOCALE_CC=config/locale/generic/c_locale.cc |
| CCODECVT_CC=config/locale/generic/codecvt_members.cc |
| CCOLLATE_CC=config/locale/generic/collate_members.cc |
| CCTYPE_CC=config/locale/vxworks/ctype_members.cc |
| CMESSAGES_H=config/locale/generic/messages_members.h |
| CMESSAGES_CC=config/locale/generic/messages_members.cc |
| CMONEY_CC=config/locale/generic/monetary_members.cc |
| CNUMERIC_CC=config/locale/generic/numeric_members.cc |
| CTIME_H=config/locale/generic/time_members.h |
| CTIME_CC=config/locale/generic/time_members.cc |
| CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
| ;; |
| dragonfly) |
| AC_MSG_RESULT(dragonfly or freebsd) |
| |
| CLOCALE_H=config/locale/dragonfly/c_locale.h |
| CLOCALE_CC=config/locale/dragonfly/c_locale.cc |
| CCODECVT_CC=config/locale/dragonfly/codecvt_members.cc |
| CCOLLATE_CC=config/locale/dragonfly/collate_members.cc |
| CCTYPE_CC=config/locale/dragonfly/ctype_members.cc |
| CMESSAGES_H=config/locale/generic/messages_members.h |
| CMESSAGES_CC=config/locale/generic/messages_members.cc |
| CMONEY_CC=config/locale/dragonfly/monetary_members.cc |
| CNUMERIC_CC=config/locale/dragonfly/numeric_members.cc |
| CTIME_H=config/locale/dragonfly/time_members.h |
| CTIME_CC=config/locale/dragonfly/time_members.cc |
| CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
| ;; |
| |
| gnu) |
| AC_MSG_RESULT(gnu) |
| |
| # Declare intention to use gettext, and add support for specific |
| # languages. |
| # For some reason, ALL_LINGUAS has to be before AM-GNU-GETTEXT |
| ALL_LINGUAS="de fr" |
| |
| # Don't call AM-GNU-GETTEXT here. Instead, assume glibc. |
| AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no) |
| if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then |
| USE_NLS=yes |
| fi |
| # Export the build objects. |
| for ling in $ALL_LINGUAS; do \ |
| glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \ |
| glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \ |
| done |
| AC_SUBST(glibcxx_MOFILES) |
| AC_SUBST(glibcxx_POFILES) |
| |
| CLOCALE_H=config/locale/gnu/c_locale.h |
| CLOCALE_CC=config/locale/gnu/c_locale.cc |
| CCODECVT_CC=config/locale/gnu/codecvt_members.cc |
| CCOLLATE_CC=config/locale/gnu/collate_members.cc |
| CCTYPE_CC=config/locale/gnu/ctype_members.cc |
| CMESSAGES_H=config/locale/gnu/messages_members.h |
| CMESSAGES_CC=config/locale/gnu/messages_members.cc |
| CMONEY_CC=config/locale/gnu/monetary_members.cc |
| CNUMERIC_CC=config/locale/gnu/numeric_members.cc |
| CTIME_H=config/locale/gnu/time_members.h |
| CTIME_CC=config/locale/gnu/time_members.cc |
| CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h |
| ;; |
| ieee_1003.1-2001) |
| AC_MSG_RESULT(IEEE 1003.1) |
| |
| CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h |
| CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc |
| CCODECVT_CC=config/locale/generic/codecvt_members.cc |
| CCOLLATE_CC=config/locale/generic/collate_members.cc |
| CCTYPE_CC=config/locale/generic/ctype_members.cc |
| CMESSAGES_H=config/locale/ieee_1003.1-2001/messages_members.h |
| CMESSAGES_CC=config/locale/ieee_1003.1-2001/messages_members.cc |
| CMONEY_CC=config/locale/generic/monetary_members.cc |
| CNUMERIC_CC=config/locale/generic/numeric_members.cc |
| CTIME_H=config/locale/generic/time_members.h |
| CTIME_CC=config/locale/generic/time_members.cc |
| CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
| ;; |
| newlib) |
| AC_MSG_RESULT(newlib) |
| |
| CLOCALE_H=config/locale/generic/c_locale.h |
| CLOCALE_CC=config/locale/generic/c_locale.cc |
| CCODECVT_CC=config/locale/generic/codecvt_members.cc |
| CCOLLATE_CC=config/locale/generic/collate_members.cc |
| CCTYPE_CC=config/locale/newlib/ctype_members.cc |
| CMESSAGES_H=config/locale/generic/messages_members.h |
| CMESSAGES_CC=config/locale/generic/messages_members.cc |
| CMONEY_CC=config/locale/generic/monetary_members.cc |
| CNUMERIC_CC=config/locale/generic/numeric_members.cc |
| CTIME_H=config/locale/generic/time_members.h |
| CTIME_CC=config/locale/generic/time_members.cc |
| CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h |
| ;; |
| esac |
| |
| # This is where the testsuite looks for locale catalogs, using the |
| # -DLOCALEDIR define during testsuite compilation. |
| glibcxx_localedir=${glibcxx_builddir}/po/share/locale |
| AC_SUBST(glibcxx_localedir) |
| |
| # A standalone libintl (e.g., GNU libintl) may be in use. |
| if test $USE_NLS = yes; then |
| AC_CHECK_HEADERS([libintl.h], [], USE_NLS=no) |
| AC_SEARCH_LIBS(gettext, intl, [], USE_NLS=no) |
| fi |
| if test $USE_NLS = yes; then |
| AC_DEFINE(_GLIBCXX_USE_NLS, 1, |
| [Define if NLS translations are to be used.]) |
| fi |
| |
| AC_SUBST(USE_NLS) |
| AC_SUBST(CLOCALE_H) |
| AC_SUBST(CMESSAGES_H) |
| AC_SUBST(CCODECVT_CC) |
| AC_SUBST(CCOLLATE_CC) |
| AC_SUBST(CCTYPE_CC) |
| AC_SUBST(CMESSAGES_CC) |
| AC_SUBST(CMONEY_CC) |
| AC_SUBST(CNUMERIC_CC) |
| AC_SUBST(CTIME_H) |
| AC_SUBST(CTIME_CC) |
| AC_SUBST(CLOCALE_CC) |
| AC_SUBST(CLOCALE_INTERNAL_H) |
| ]) |
| |
| |
| dnl |
| dnl Check for which std::allocator base class to use. The choice is |
| dnl mapped from a subdirectory of include/ext. |
| dnl |
| dnl Default is new. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [ |
| AC_MSG_CHECKING([for std::allocator base class]) |
| GLIBCXX_ENABLE(libstdcxx-allocator,auto,[[[=KIND]]], |
| [use KIND for target std::allocator base], |
| [permit new|malloc|mt|bitmap|pool|yes|no|auto]) |
| |
| # 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. |
| if test $enable_libstdcxx_allocator = no || |
| test $enable_libstdcxx_allocator = yes; |
| then |
| enable_libstdcxx_allocator=auto |
| fi |
| |
| # Either a known package, or "auto". Auto implies the default choice |
| # for a particular platform. |
| enable_libstdcxx_allocator_flag=$enable_libstdcxx_allocator |
| |
| # Probe for host-specific support if no specific model is specified. |
| # Default to "new". |
| if test $enable_libstdcxx_allocator_flag = auto; then |
| case ${target_os} in |
| linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu) |
| enable_libstdcxx_allocator_flag=new |
| ;; |
| *) |
| enable_libstdcxx_allocator_flag=new |
| ;; |
| esac |
| fi |
| AC_MSG_RESULT($enable_libstdcxx_allocator_flag) |
| |
| |
| # Set configure bits for specified locale package |
| case ${enable_libstdcxx_allocator_flag} in |
| bitmap) |
| ALLOCATOR_H=config/allocator/bitmap_allocator_base.h |
| ALLOCATOR_NAME=__gnu_cxx::bitmap_allocator |
| ;; |
| malloc) |
| ALLOCATOR_H=config/allocator/malloc_allocator_base.h |
| ALLOCATOR_NAME=__gnu_cxx::malloc_allocator |
| ;; |
| mt) |
| ALLOCATOR_H=config/allocator/mt_allocator_base.h |
| ALLOCATOR_NAME=__gnu_cxx::__mt_alloc |
| ;; |
| new) |
| ALLOCATOR_H=config/allocator/new_allocator_base.h |
| ALLOCATOR_NAME=__gnu_cxx::new_allocator |
| ;; |
| pool) |
| ALLOCATOR_H=config/allocator/pool_allocator_base.h |
| ALLOCATOR_NAME=__gnu_cxx::__pool_alloc |
| ;; |
| esac |
| |
| GLIBCXX_CONDITIONAL(ENABLE_ALLOCATOR_NEW, |
| test $enable_libstdcxx_allocator_flag = new) |
| AC_SUBST(ALLOCATOR_H) |
| AC_SUBST(ALLOCATOR_NAME) |
| ]) |
| |
| |
| dnl |
| dnl Check for whether the Boost-derived checks should be turned on. |
| dnl |
| dnl --enable-concept-checks turns them on. |
| dnl --disable-concept-checks leaves them off. |
| dnl + Usage: GLIBCXX_ENABLE_CONCEPT_CHECKS[(DEFAULT)] |
| dnl Where DEFAULT is either `yes' or `no'. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_CONCEPT_CHECKS], [ |
| GLIBCXX_ENABLE(concept-checks,$1,,[use Boost-derived template checks]) |
| if test $enable_concept_checks = yes; then |
| AC_DEFINE(_GLIBCXX_CONCEPT_CHECKS, 1, |
| [Define to use concept checking code from the boost libraries.]) |
| fi |
| ]) |
| |
| dnl |
| dnl Use extern templates. |
| dnl |
| dnl --enable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 1 |
| dnl --disable-extern-template defines _GLIBCXX_EXTERN_TEMPLATE to 0 |
| |
| dnl + Usage: GLIBCXX_ENABLE_TEMPLATE[(DEFAULT)] |
| dnl Where DEFAULT is `yes' or `no'. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_EXTERN_TEMPLATE], [ |
| |
| GLIBCXX_ENABLE(extern-template,$1,,[enable extern template]) |
| |
| AC_MSG_CHECKING([for extern template support]) |
| AC_MSG_RESULT([$enable_extern_template]) |
| |
| GLIBCXX_CONDITIONAL(ENABLE_EXTERN_TEMPLATE, test $enable_extern_template = yes) |
| ]) |
| |
| dnl |
| dnl Use vtable verification. |
| dnl |
| dnl --enable-vtable-verify defines _GLIBCXX_VTABLE_VERIFY to 1 |
| dnl --disable-vtable-verify defines _GLIBCXX_VTABLE_VERIFY to 0 |
| |
| dnl + Usage: GLIBCXX_ENABLE_VTABLE_VERIFY[(DEFAULT)] |
| dnl Where DEFAULT is `yes' or `no'. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_VTABLE_VERIFY], [ |
| |
| GLIBCXX_ENABLE(vtable-verify,$1,,[enable vtable verify]) |
| |
| AC_MSG_CHECKING([for vtable verify support]) |
| AC_MSG_RESULT([$enable_vtable_verify]) |
| |
| vtv_cygmin=no |
| if test $enable_vtable_verify = yes; then |
| case ${target_os} in |
| cygwin*|mingw32*) |
| VTV_CXXFLAGS="-fvtable-verify=std -Wl,-lvtv,-u_vtable_map_vars_start,-u_vtable_map_vars_end" |
| VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,--rpath -Wl,${toplevel_builddir}/libvtv/.libs" |
| vtv_cygmin=yes |
| ;; |
| darwin*) |
| VTV_CXXFLAGS="-fvtable-verify=std -Wl,-u,_vtable_map_vars_start -Wl,-u,_vtable_map_vars_end" |
| VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,-rpath,${toplevel_builddir}/libvtv/.libs" |
| ;; |
| solaris2*) |
| VTV_CXXFLAGS="-fvtable-verify=std -Wl,-u_vtable_map_vars_start,-u_vtable_map_vars_end" |
| VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,-R -Wl,${toplevel_builddir}/libvtv/.libs" |
| ;; |
| *) |
| VTV_CXXFLAGS="-fvtable-verify=std -Wl,-u_vtable_map_vars_start,-u_vtable_map_vars_end" |
| VTV_CXXLINKFLAGS="-L${toplevel_builddir}/libvtv/.libs -Wl,--rpath -Wl,${toplevel_builddir}/libvtv/.libs" |
| ;; |
| esac |
| VTV_PCH_CXXFLAGS="-fvtable-verify=std" |
| else |
| VTV_CXXFLAGS= |
| VTV_PCH_CXXFLAGS= |
| VTV_CXXLINKFLAGS= |
| fi |
| |
| AC_SUBST(VTV_CXXFLAGS) |
| AC_SUBST(VTV_PCH_CXXFLAGS) |
| AC_SUBST(VTV_CXXLINKFLAGS) |
| AM_CONDITIONAL(VTV_CYGMIN, test x$vtv_cygmin = xyes) |
| GLIBCXX_CONDITIONAL(ENABLE_VTABLE_VERIFY, test $enable_vtable_verify = yes) |
| ]) |
| |
| dnl |
| dnl Check for parallel mode pre-requisites, including OpenMP support. |
| dnl |
| dnl + Usage: GLIBCXX_ENABLE_PARALLEL |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_PARALLEL], [ |
| |
| enable_parallel=no; |
| |
| # See if configured libgomp/omp.h exists. (libgomp may be in |
| # noconfigdirs but not explicitly disabled.) |
| if echo " ${TARGET_CONFIGDIRS} " | grep " libgomp " > /dev/null 2>&1 ; then |
| enable_parallel=yes; |
| else |
| AC_MSG_NOTICE([target-libgomp not built]) |
| fi |
| |
| AC_MSG_CHECKING([for parallel mode support]) |
| AC_MSG_RESULT([$enable_parallel]) |
| ]) |
| |
| |
| dnl |
| dnl Check for which I/O library to use: stdio and POSIX, or pure stdio. |
| dnl |
| dnl Default is stdio_posix. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_CSTDIO], [ |
| AC_MSG_CHECKING([for underlying I/O to use]) |
| GLIBCXX_ENABLE(cstdio,stdio,[[[=PACKAGE]]], |
| [use target-specific I/O package], [permit stdio|stdio_posix|stdio_pure]) |
| |
| # The only available I/O model is based on stdio, via basic_file_stdio. |
| # The default "stdio" is actually "stdio + POSIX" because it uses fdopen(3) |
| # to get a file descriptor and then uses read(3) and write(3) with it. |
| # The "stdio_pure" model doesn't use fdopen and only uses FILE* for I/O. |
| case ${enable_cstdio} in |
| stdio*) |
| CSTDIO_H=config/io/c_io_stdio.h |
| BASIC_FILE_H=config/io/basic_file_stdio.h |
| BASIC_FILE_CC=config/io/basic_file_stdio.cc |
| AC_MSG_RESULT(stdio) |
| |
| if test "x$enable_cstdio" = "xstdio_pure" ; then |
| AC_DEFINE(_GLIBCXX_USE_STDIO_PURE, 1, |
| [Define to restrict std::__basic_file<> to stdio APIs.]) |
| fi |
| ;; |
| esac |
| |
| AC_SUBST(CSTDIO_H) |
| AC_SUBST(BASIC_FILE_H) |
| AC_SUBST(BASIC_FILE_CC) |
| ]) |
| |
| |
| dnl |
| dnl Check for "unusual" flags to pass to the compiler while building. |
| dnl |
| dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing |
| dnl experimental flags such as -fpch, -fIMI, -Dfloat=char, etc. |
| dnl --disable-cxx-flags passes nothing. |
| dnl + See http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00131.html |
| dnl http://gcc.gnu.org/ml/libstdc++/2000-q2/msg00284.html |
| dnl http://gcc.gnu.org/ml/libstdc++/2000-q1/msg00035.html |
| dnl + Usage: GLIBCXX_ENABLE_CXX_FLAGS(default flags) |
| dnl If "default flags" is an empty string, the effect is the same |
| dnl as --disable or --enable=no. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_CXX_FLAGS], [dnl |
| AC_MSG_CHECKING([for extra compiler flags for building]) |
| GLIBCXX_ENABLE(cxx-flags,$1,[=FLAGS], |
| [pass compiler FLAGS when building library], |
| [case "x$enable_cxx_flags" in |
| xno | x) enable_cxx_flags= ;; |
| x-*) ;; |
| *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;; |
| esac]) |
| |
| # Run through flags (either default or command-line) and set anything |
| # extra (e.g., #defines) that must accompany particular g++ options. |
| if test -n "$enable_cxx_flags"; then |
| for f in $enable_cxx_flags; do |
| case "$f" in |
| -fhonor-std) ;; |
| -*) ;; |
| *) # and we're trying to pass /what/ exactly? |
| AC_MSG_ERROR([compiler flags start with a -]) ;; |
| esac |
| done |
| fi |
| |
| EXTRA_CXX_FLAGS="$enable_cxx_flags" |
| AC_MSG_RESULT($EXTRA_CXX_FLAGS) |
| AC_SUBST(EXTRA_CXX_FLAGS) |
| ]) |
| |
| |
| dnl |
| dnl Check to see if debugging libraries are to be built. |
| dnl |
| dnl --enable-libstdcxx-debug |
| dnl builds a separate set of debugging libraries in addition to the |
| dnl normal (shared, static) libstdc++ binaries. |
| dnl |
| dnl --disable-libstdcxx-debug |
| dnl builds only one (non-debug) version of libstdc++. |
| dnl |
| dnl --enable-libstdcxx-debug-flags=FLAGS |
| dnl iff --enable-debug == yes, then use FLAGS to build the debug library. |
| dnl |
| dnl + Usage: GLIBCXX_ENABLE_DEBUG[(DEFAULT)] |
| dnl Where DEFAULT is either `yes' or `no'. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_DEBUG], [ |
| AC_MSG_CHECKING([for additional debug build]) |
| skip_debug_build= |
| GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library]) |
| if test x$enable_libstdcxx_debug = xyes; then |
| if test -f $toplevel_builddir/../stage_final \ |
| && test -f $toplevel_builddir/../stage_current; then |
| stage_final=`cat $toplevel_builddir/../stage_final` |
| stage_current=`cat $toplevel_builddir/../stage_current` |
| if test x$stage_current != x$stage_final ; then |
| skip_debug_build=" (skipped for bootstrap stage $stage_current)" |
| enable_libstdcxx_debug=no |
| fi |
| fi |
| fi |
| AC_MSG_RESULT($enable_libstdcxx_debug$skip_debug_build) |
| GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes) |
| ]) |
| |
| |
| dnl |
| dnl Check for explicit debug flags. |
| dnl |
| dnl --enable-libstdcxx-debug-flags='-O1' |
| dnl is a general method for passing flags to be used when |
| dnl building debug libraries with --enable-libstdcxx-debug. |
| dnl |
| dnl --disable-libstdcxx-debug-flags does nothing. |
| dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags) |
| dnl If "default flags" is an empty string, the effect is the same |
| dnl as --disable or --enable=no. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_DEBUG_FLAGS], [ |
| GLIBCXX_ENABLE(libstdcxx-debug-flags,[$1],[=FLAGS], |
| [pass compiler FLAGS when building debug library], |
| [case "x$enable_libstdcxx_debug_flags" in |
| xno | x) enable_libstdcxx_debug_flags= ;; |
| x-*) ;; |
| *) AC_MSG_ERROR(_g_switch needs compiler flags as arguments) ;; |
| esac]) |
| |
| # Option parsed, now set things appropriately |
| DEBUG_FLAGS="$enable_libstdcxx_debug_flags" |
| AC_SUBST(DEBUG_FLAGS) |
| |
| AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS]) |
| ]) |
| |
| |
| dnl |
| dnl Check if the user only wants a freestanding library implementation. |
| dnl |
| dnl --disable-hosted-libstdcxx will turn off most of the library build, |
| dnl installing only the headers required by [17.4.1.3] and the language |
| dnl support library. More than that will be built (to keep the Makefiles |
| dnl conveniently clean), but not installed. |
| dnl |
| dnl Sets: |
| dnl is_hosted (yes/no) |
| dnl |
| dnl Defines: |
| dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0) |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [ |
| AC_ARG_ENABLE([hosted-libstdcxx], |
| AC_HELP_STRING([--disable-hosted-libstdcxx], |
| [only build freestanding C++ runtime support]),, |
| [case "$host" in |
| arm*-*-symbianelf*) |
| enable_hosted_libstdcxx=no |
| ;; |
| *) |
| enable_hosted_libstdcxx=yes |
| ;; |
| esac]) |
| if test "$enable_hosted_libstdcxx" = no; then |
| AC_MSG_NOTICE([Only freestanding libraries will be built]) |
| is_hosted=no |
| hosted_define=0 |
| enable_abi_check=no |
| enable_libstdcxx_pch=no |
| else |
| is_hosted=yes |
| hosted_define=1 |
| fi |
| GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes) |
| AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define, |
| [Define to 1 if a full hosted library is built, or 0 if freestanding.]) |
| ]) |
| |
| |
| dnl |
| dnl Check if the user wants a non-verbose library implementation. |
| dnl |
| dnl --disable-libstdcxx-verbose will turn off descriptive messages to |
| dnl standard error on termination. |
| dnl |
| dnl Defines: |
| dnl _GLIBCXX_VERBOSE (always defined, either to 1 or 0) |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_VERBOSE], [ |
| AC_ARG_ENABLE([libstdcxx-verbose], |
| AC_HELP_STRING([--disable-libstdcxx-verbose], |
| [disable termination messages to standard error]),, |
| [enable_libstdcxx_verbose=yes]) |
| if test x"$enable_libstdcxx_verbose" = xyes; then |
| verbose_define=1 |
| else |
| AC_MSG_NOTICE([verbose termination messages are disabled]) |
| verbose_define=0 |
| fi |
| AC_DEFINE_UNQUOTED(_GLIBCXX_VERBOSE, $verbose_define, |
| [Define to 1 if a verbose library is built, or 0 otherwise.]) |
| ]) |
| |
| |
| dnl |
| dnl Check for template specializations for the 'long long' type. |
| dnl The result determines only whether 'long long' I/O is enabled; things |
| dnl like numeric_limits<> specializations are always available. |
| dnl |
| dnl --enable-long-long defines _GLIBCXX_USE_LONG_LONG |
| dnl --disable-long-long leaves _GLIBCXX_USE_LONG_LONG undefined |
| dnl + Usage: GLIBCXX_ENABLE_LONG_LONG[(DEFAULT)] |
| dnl Where DEFAULT is either `yes' or `no'. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_LONG_LONG], [ |
| GLIBCXX_ENABLE(long-long,$1,,[enable template specializations for 'long long']) |
| if test $enable_long_long = yes; then |
| AC_DEFINE(_GLIBCXX_USE_LONG_LONG, 1, |
| [Define if code specialized for long long should be used.]) |
| fi |
| AC_MSG_CHECKING([for enabled long long specializations]) |
| AC_MSG_RESULT([$enable_long_long]) |
| ]) |
| |
| |
| dnl |
| dnl Check for decimal floating point. |
| dnl See: |
| dnl http://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html#Decimal-Float |
| dnl |
| dnl This checks to see if the host supports decimal floating point types. |
| dnl |
| dnl Defines: |
| dnl _GLIBCXX_USE_DECIMAL_FLOAT |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_DECIMAL_FLOAT], [ |
| |
| # Fake what AC_TRY_COMPILE does, without linking as this is |
| # unnecessary for this test. |
| |
| cat > conftest.$ac_ext << EOF |
| [#]line __oline__ "configure" |
| int main() |
| { |
| _Decimal32 d1; |
| _Decimal64 d2; |
| _Decimal128 d3; |
| return 0; |
| } |
| EOF |
| |
| AC_MSG_CHECKING([for ISO/IEC TR 24733 ]) |
| if AC_TRY_EVAL(ac_compile); then |
| AC_DEFINE(_GLIBCXX_USE_DECIMAL_FLOAT, 1, |
| [Define if ISO/IEC TR 24733 decimal floating point types are supported on this host.]) |
| enable_dfp=yes |
| else |
| enable_dfp=no |
| fi |
| AC_MSG_RESULT($enable_dfp) |
| rm -f conftest* |
| ]) |
| |
| dnl |
| dnl Check for GNU 128-bit floating point type. |
| dnl |
| dnl Note: also checks that the type isn't a standard types. |
| dnl |
| dnl Defines: |
| dnl ENABLE_FLOAT128 |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_FLOAT128], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| |
| # Fake what AC_TRY_COMPILE does, without linking as this is |
| # unnecessary for this test. |
| |
| cat > conftest.$ac_ext << EOF |
| [#]line __oline__ "configure" |
| template<typename T1, typename T2> |
| struct same |
| { typedef T2 type; }; |
| |
| template<typename T> |
| struct same<T, T>; |
| |
| int main() |
| { |
| typename same<double, __float128>::type f1; |
| typename same<long double, __float128>::type f2; |
| } |
| EOF |
| |
| AC_MSG_CHECKING([for __float128]) |
| if AC_TRY_EVAL(ac_compile); then |
| enable_float128=yes |
| else |
| enable_float128=no |
| fi |
| AC_MSG_RESULT($enable_float128) |
| GLIBCXX_CONDITIONAL(ENABLE_FLOAT128, test $enable_float128 = yes) |
| rm -f conftest* |
| |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check for template specializations for the 'wchar_t' type. |
| dnl |
| dnl --enable-wchar_t defines _GLIBCXX_USE_WCHAR_T |
| 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 must also be present. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [ |
| GLIBCXX_ENABLE(wchar_t,$1,,[enable template specializations for 'wchar_t']) |
| |
| # Test wchar.h for mbstate_t, which is needed for char_traits and fpos. |
| AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no) |
| AC_MSG_CHECKING([for mbstate_t]) |
| AC_TRY_COMPILE([#include <wchar.h>], |
| [mbstate_t teststate;], |
| have_mbstate_t=yes, have_mbstate_t=no) |
| AC_MSG_RESULT($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 <wchar.h> |
| #include <stddef.h> |
| 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]) |
| ]) |
| |
| |
| dnl |
| dnl Check to see if building and using a C++ precompiled header can be done. |
| dnl |
| dnl --enable-libstdcxx-pch=yes |
| dnl default, this shows intent to use stdc++.h.gch If it looks like it |
| dnl may work, after some light-hearted attempts to puzzle out compiler |
| dnl support, flip bits on in include/Makefile.am |
| dnl |
| dnl --disable-libstdcxx-pch |
| dnl turns off attempts to use or build stdc++.h.gch. |
| dnl |
| dnl Substs: |
| dnl glibcxx_PCHFLAGS |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_PCH], [ |
| GLIBCXX_ENABLE(libstdcxx-pch,$1,,[build pre-compiled libstdc++ headers]) |
| if test $enable_libstdcxx_pch = yes; then |
| AC_CACHE_CHECK([for compiler with PCH support], |
| [glibcxx_cv_prog_CXX_pch], |
| [ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated" |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| echo '#include <math.h>' > conftest.h |
| if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \ |
| -o conftest.h.gch 1>&5 2>&1 && |
| echo '#error "pch failed"' > conftest.h && |
| echo '#include "conftest.h"' > conftest.cc && |
| $CXX -c $CXXFLAGS $CPPFLAGS conftest.cc 1>&5 2>&1 ; |
| then |
| glibcxx_cv_prog_CXX_pch=yes |
| else |
| glibcxx_cv_prog_CXX_pch=no |
| fi |
| rm -f conftest* |
| CXXFLAGS=$ac_save_CXXFLAGS |
| AC_LANG_RESTORE |
| ]) |
| enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch |
| fi |
| |
| AC_MSG_CHECKING([for enabled PCH]) |
| AC_MSG_RESULT([$enable_libstdcxx_pch]) |
| |
| GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_PCH, test $enable_libstdcxx_pch = yes) |
| if test $enable_libstdcxx_pch = yes; then |
| glibcxx_PCHFLAGS="-include bits/stdc++.h" |
| else |
| glibcxx_PCHFLAGS="" |
| fi |
| AC_SUBST(glibcxx_PCHFLAGS) |
| ]) |
| |
| |
| dnl |
| dnl Check for atomic builtins. |
| dnl See: |
| dnl http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html |
| dnl |
| dnl This checks to see if the host supports the compiler-generated |
| dnl builtins for atomic operations for various integral sizes. Note, this |
| dnl is intended to be an all-or-nothing switch, so all the atomic operations |
| dnl that are used should be checked. |
| dnl |
| dnl Note: |
| dnl libgomp and libgfortran use a link test, see CHECK_SYNC_FETCH_AND_ADD. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [ |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| old_CXXFLAGS="$CXXFLAGS" |
| |
| # Do link tests if possible, instead asm tests, limited to some platforms |
| # see discussion in PR target/40134, PR libstdc++/40133 and the thread |
| # starting at http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00322.html |
| atomic_builtins_link_tests=no |
| if test x$gcc_no_link != xyes; then |
| # Can do link tests. Limit to some tested platforms |
| case "$host" in |
| *-*-linux* | *-*-uclinux* | *-*-kfreebsd*-gnu | *-*-gnu*) |
| atomic_builtins_link_tests=yes |
| ;; |
| esac |
| fi |
| |
| if test x$atomic_builtins_link_tests = xyes; then |
| |
| # Do link tests. |
| |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| |
| AC_MSG_CHECKING([for atomic builtins for bool]) |
| AC_CACHE_VAL(glibcxx_cv_atomic_bool, [ |
| AC_TRY_LINK( |
| [ ], |
| [typedef bool atomic_type; |
| atomic_type c1; |
| atomic_type c2; |
| atomic_type c3(0); |
| // N.B. __atomic_fetch_add is not supported for bool. |
| __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, |
| __ATOMIC_RELAXED); |
| __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
| __atomic_load_n(&c1, __ATOMIC_RELAXED); |
| ], |
| [glibcxx_cv_atomic_bool=yes], |
| [glibcxx_cv_atomic_bool=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_atomic_bool) |
| |
| AC_MSG_CHECKING([for atomic builtins for short]) |
| AC_CACHE_VAL(glibcxx_cv_atomic_short, [ |
| AC_TRY_LINK( |
| [ ], |
| [typedef short atomic_type; |
| atomic_type c1; |
| atomic_type c2; |
| atomic_type c3(0); |
| __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); |
| __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, |
| __ATOMIC_RELAXED); |
| __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
| __atomic_load_n(&c1, __ATOMIC_RELAXED); |
| ], |
| [glibcxx_cv_atomic_short=yes], |
| [glibcxx_cv_atomic_short=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_atomic_short) |
| |
| AC_MSG_CHECKING([for atomic builtins for int]) |
| AC_CACHE_VAL(glibcxx_cv_atomic_int, [ |
| AC_TRY_LINK( |
| [ ], |
| [typedef int atomic_type; |
| atomic_type c1; |
| atomic_type c2; |
| atomic_type c3(0); |
| __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); |
| __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, |
| __ATOMIC_RELAXED); |
| __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
| __atomic_load_n(&c1, __ATOMIC_RELAXED); |
| ], |
| [glibcxx_cv_atomic_int=yes], |
| [glibcxx_cv_atomic_int=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_atomic_int) |
| |
| AC_MSG_CHECKING([for atomic builtins for long long]) |
| AC_CACHE_VAL(glibcxx_cv_atomic_long_long, [ |
| AC_TRY_LINK( |
| [ ], |
| [typedef long long atomic_type; |
| atomic_type c1; |
| atomic_type c2; |
| atomic_type c3(0); |
| __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); |
| __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, |
| __ATOMIC_RELAXED); |
| __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
| __atomic_load_n(&c1, __ATOMIC_RELAXED); |
| ], |
| [glibcxx_cv_atomic_long_long=yes], |
| [glibcxx_cv_atomic_long_long=no]) |
| ]) |
| AC_MSG_RESULT($glibcxx_cv_atomic_long_long) |
| |
| else |
| |
| # Do asm tests. |
| |
| # Compile unoptimized. |
| CXXFLAGS='-O0 -S' |
| |
| # Fake what AC_TRY_COMPILE does. |
| |
| cat > conftest.$ac_ext << EOF |
| [#]line __oline__ "configure" |
| int main() |
| { |
| typedef bool atomic_type; |
| atomic_type c1; |
| atomic_type c2; |
| atomic_type c3(0); |
| // N.B. __atomic_fetch_add is not supported for bool. |
| __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, |
| __ATOMIC_RELAXED); |
| __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
| __atomic_load_n(&c1, __ATOMIC_RELAXED); |
| |
| return 0; |
| } |
| EOF |
| |
| AC_MSG_CHECKING([for atomic builtins for bool]) |
| if AC_TRY_EVAL(ac_compile); then |
| if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
| glibcxx_cv_atomic_bool=no |
| else |
| glibcxx_cv_atomic_bool=yes |
| fi |
| fi |
| AC_MSG_RESULT($glibcxx_cv_atomic_bool) |
| rm -f conftest* |
| |
| cat > conftest.$ac_ext << EOF |
| [#]line __oline__ "configure" |
| int main() |
| { |
| typedef short atomic_type; |
| atomic_type c1; |
| atomic_type c2; |
| atomic_type c3(0); |
| __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); |
| __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, |
| __ATOMIC_RELAXED); |
| __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
| __atomic_load_n(&c1, __ATOMIC_RELAXED); |
| |
| return 0; |
| } |
| EOF |
| |
| AC_MSG_CHECKING([for atomic builtins for short]) |
| if AC_TRY_EVAL(ac_compile); then |
| if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
| glibcxx_cv_atomic_short=no |
| else |
| glibcxx_cv_atomic_short=yes |
| fi |
| fi |
| AC_MSG_RESULT($glibcxx_cv_atomic_short) |
| rm -f conftest* |
| |
| cat > conftest.$ac_ext << EOF |
| [#]line __oline__ "configure" |
| int main() |
| { |
| // NB: _Atomic_word not necessarily int. |
| typedef int atomic_type; |
| atomic_type c1; |
| atomic_type c2; |
| atomic_type c3(0); |
| __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); |
| __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, |
| __ATOMIC_RELAXED); |
| __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
| __atomic_load_n(&c1, __ATOMIC_RELAXED); |
| |
| return 0; |
| } |
| EOF |
| |
| AC_MSG_CHECKING([for atomic builtins for int]) |
| if AC_TRY_EVAL(ac_compile); then |
| if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
| glibcxx_cv_atomic_int=no |
| else |
| glibcxx_cv_atomic_int=yes |
| fi |
| fi |
| AC_MSG_RESULT($glibcxx_cv_atomic_int) |
| rm -f conftest* |
| |
| cat > conftest.$ac_ext << EOF |
| [#]line __oline__ "configure" |
| int main() |
| { |
| typedef long long atomic_type; |
| atomic_type c1; |
| atomic_type c2; |
| atomic_type c3(0); |
| __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED); |
| __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL, |
| __ATOMIC_RELAXED); |
| __atomic_test_and_set(&c1, __ATOMIC_RELAXED); |
| __atomic_load_n(&c1, __ATOMIC_RELAXED); |
| |
| return 0; |
| } |
| EOF |
| |
| AC_MSG_CHECKING([for atomic builtins for long long]) |
| if AC_TRY_EVAL(ac_compile); then |
| if grep __atomic_ conftest.s >/dev/null 2>&1 ; then |
| glibcxx_cv_atomic_long_long=no |
| else |
| glibcxx_cv_atomic_long_long=yes |
| fi |
| fi |
| AC_MSG_RESULT($glibcxx_cv_atomic_long_long) |
| rm -f conftest* |
| |
| fi |
| |
| CXXFLAGS="$old_CXXFLAGS" |
| AC_LANG_RESTORE |
| |
| # Set atomicity_dir to builtins if all but the long long test above passes, |
| # or if the builtins were already chosen (e.g. by configure.host). |
| if { test "$glibcxx_cv_atomic_bool" = yes \ |
| && test "$glibcxx_cv_atomic_short" = yes \ |
| && test "$glibcxx_cv_atomic_int" = yes; } \ |
| || test "$atomicity_dir" = "cpu/generic/atomicity_builtins"; then |
| AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1, |
| [Define if the compiler supports C++11 atomics.]) |
| atomicity_dir=cpu/generic/atomicity_builtins |
| fi |
| |
| # If still generic, set to mutex. |
| if test $atomicity_dir = "cpu/generic" ; then |
| atomicity_dir=cpu/generic/atomicity_mutex |
| AC_MSG_WARN([No native atomic operations are provided for this platform.]) |
| if test "x$target_thread_file" = xsingle; then |
| AC_MSG_WARN([They cannot be faked when thread support is disabled.]) |
| AC_MSG_WARN([Thread-safety of certain classes is not guaranteed.]) |
| else |
| AC_MSG_WARN([They will be faked using a mutex.]) |
| AC_MSG_WARN([Performance of certain classes will degrade as a result.]) |
| fi |
| fi |
| |
| ]) |
| |
| dnl |
| dnl Set default lock policy for synchronizing shared_ptr reference counting. |
| dnl |
| dnl --with-libstdcxx-lock-policy=auto |
| dnl Use atomic operations for shared_ptr reference counting only if |
| dnl the default target supports atomic compare-and-swap. |
| dnl --with-libstdcxx-lock-policy=atomic |
| dnl Use atomic operations for shared_ptr reference counting. |
| dnl --with-libstdcxx-lock-policy=mutex |
| dnl Use a mutex to synchronize shared_ptr reference counting. |
| dnl |
| dnl This controls the value of __gnu_cxx::__default_lock_policy, which |
| dnl determines how shared_ptr reference counts are synchronized. |
| dnl The option "atomic" means that atomic operations should be used, |
| dnl "mutex" means that a mutex will be used. The default option, "auto", |
| dnl will check if the target supports the compiler-generated builtins |
| dnl for atomic compare-and-swap operations for 2-byte and 4-byte integers, |
| dnl and will use "atomic" if supported, "mutex" otherwise. |
| dnl This option is ignored if the thread model used by GCC is "single", |
| dnl as no synchronization is used at all in that case. |
| dnl This option affects the library ABI (except in the "single" thread model). |
| dnl |
| dnl Defines _GLIBCXX_HAVE_ATOMIC_LOCK_POLICY to 1 if atomics should be used. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_LOCK_POLICY], [ |
| |
| AC_ARG_WITH([libstdcxx-lock-policy], |
| AC_HELP_STRING([--with-libstdcxx-lock-policy={atomic,mutex,auto}], |
| [synchronization policy for shared_ptr reference counting [default=auto]]), |
| [libstdcxx_atomic_lock_policy=$withval], |
| [libstdcxx_atomic_lock_policy=auto]) |
| |
| case "$libstdcxx_atomic_lock_policy" in |
| atomic|mutex|auto) ;; |
| *) AC_MSG_ERROR([Invalid argument for --with-libstdcxx-lock-policy]) ;; |
| esac |
| AC_MSG_CHECKING([for lock policy for shared_ptr reference counts]) |
| |
| if test x"$libstdcxx_atomic_lock_policy" = x"auto"; then |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| |
| dnl Why do we care about 2-byte CAS on targets with 4-byte _Atomic_word?! |
| AC_TRY_COMPILE([ |
| #if ! defined __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 |
| # error "No 2-byte compare-and-swap" |
| #elif ! defined __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 |
| # error "No 4-byte compare-and-swap" |
| #endif |
| ],, |
| [libstdcxx_atomic_lock_policy=atomic], |
| [libstdcxx_atomic_lock_policy=mutex]) |
| AC_LANG_RESTORE |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| fi |
| |
| if test x"$libstdcxx_atomic_lock_policy" = x"atomic"; then |
| AC_MSG_RESULT(atomic) |
| AC_DEFINE(HAVE_ATOMIC_LOCK_POLICY,1, |
| [Defined if shared_ptr reference counting should use atomic operations.]) |
| else |
| AC_MSG_RESULT(mutex) |
| fi |
| |
| ]) |
| |
| dnl |
| dnl Allow visibility attributes to be used on namespaces, objects, etc. |
| dnl |
| dnl --enable-libstdcxx-visibility enables attempt to use visibility attributes. |
| dnl --disable-libstdcxx-visibility turns off all use of visibility attributes. |
| dnl + Usage: GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY[(DEFAULT)] |
| dnl Where DEFAULT is 'yes'. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY], [ |
| GLIBCXX_ENABLE(libstdcxx-visibility,$1,,[enables visibility safe usage]) |
| |
| if test x$enable_libstdcxx_visibility = xyes ; then |
| dnl all hail libgfortran |
| dnl Check whether the target supports hidden visibility. |
| AC_CACHE_CHECK([whether the target supports hidden visibility], |
| glibcxx_cv_have_attribute_visibility, [ |
| save_CFLAGS="$CFLAGS" |
| CFLAGS="$CFLAGS -Werror" |
| AC_TRY_COMPILE([void __attribute__((visibility("hidden"))) foo(void) { }], |
| [], glibcxx_cv_have_attribute_visibility=yes, |
| glibcxx_cv_have_attribute_visibility=no) |
| CFLAGS="$save_CFLAGS"]) |
| if test $glibcxx_cv_have_attribute_visibility = no; then |
| enable_libstdcxx_visibility=no |
| fi |
| fi |
| |
| GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_libstdcxx_visibility = yes) |
| AC_MSG_NOTICE([visibility supported: $enable_libstdcxx_visibility]) |
| ]) |
| |
| |
| dnl |
| dnl Add version tags to symbols in shared library (or not), additionally |
| dnl marking other symbols as private/local (or not). |
| dnl |
| dnl Sets libtool_VERSION, and determines shared library SONAME. |
| dnl |
| dnl This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no. |
| dnl |
| dnl --enable-symvers=style adds a version script to the linker call when |
| dnl creating the shared library. The choice of version script is |
| dnl controlled by 'style'. |
| dnl --disable-symvers does not. |
| dnl |
| dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)] |
| dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to |
| dnl choose a default style based on linker characteristics. Passing |
| dnl 'no' disables versioning. |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_SYMVERS], [ |
| |
| GLIBCXX_ENABLE(symvers,$1,[[[=STYLE]]], |
| [enables symbol versioning of the shared library], |
| [permit yes|no|gnu|gnu-versioned-namespace|darwin|darwin-export|sun]) |
| |
| # If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we |
| # don't know enough about $LD to do tricks... |
| AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES]) |
| # Sun style symbol versions needs GNU c++filt for make_sunver.pl to work |
| # with extern "C++" in version scripts. |
| AC_REQUIRE([GCC_PROG_GNU_CXXFILT]) |
| |
| # Turn a 'yes' into a suitable default. |
| if test x$enable_symvers = xyes ; 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 |
| case ${target_os} in |
| hpux*) |
| enable_symvers=no ;; |
| *) |
| enable_symvers=gnu ;; |
| esac |
| else |
| case ${target_os} in |
| darwin*) |
| enable_symvers=darwin ;; |
| # Sun symbol versioning exists since Solaris 2.5. |
| solaris2.[[5-9]]* | solaris2.1[[0-9]]*) |
| # make_sunver.pl needs GNU c++filt to support extern "C++" in |
| # version scripts, so disable symbol versioning if none can be |
| # found. |
| if test -z "$ac_cv_path_CXXFILT"; then |
| AC_MSG_WARN([=== You have requested Sun symbol versioning, but]) |
| AC_MSG_WARN([=== no GNU c++filt could be found.]) |
| AC_MSG_WARN([=== Symbol versioning will be disabled.]) |
| enable_symvers=no |
| else |
| enable_symvers=sun |
| fi |
| ;; |
| *) |
| enable_symvers=no ;; |
| esac |
| fi |
| fi |
| fi |
| |
| # Check to see if 'darwin' or 'darwin-export' can win. |
| if test x$enable_symvers = xdarwin-export ; then |
| enable_symvers=darwin |
| fi |
| |
| # Check if 'sun' was requested on non-Solaris 2 platforms. |
| if test x$enable_symvers = xsun ; then |
| case ${target_os} in |
| solaris2*) |
| # All fine. |
| ;; |
| *) |
| # Unlikely to work. |
| AC_MSG_WARN([=== You have requested Sun symbol versioning, but]) |
| AC_MSG_WARN([=== you are not targetting Solaris 2.]) |
| AC_MSG_WARN([=== Symbol versioning will be disabled.]) |
| enable_symvers=no |
| ;; |
| esac |
| fi |
| |
| # Check to see if 'gnu' can win. |
| if test $enable_symvers = gnu || |
| test $enable_symvers = gnu-versioned-namespace || |
| test $enable_symvers = sun; then |
| # Check to see if libgcc_s exists, indicating that shared libgcc is possible. |
| AC_MSG_CHECKING([for shared libgcc]) |
| ac_save_CFLAGS="$CFLAGS" |
| CFLAGS=' -lgcc_s' |
| AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes, glibcxx_shared_libgcc=no) |
| CFLAGS="$ac_save_CFLAGS" |
| if test $glibcxx_shared_libgcc = no; then |
| cat > conftest.c <<EOF |
| int main (void) { return 0; } |
| EOF |
| changequote(,)dnl |
| glibcxx_libgcc_s_suffix=`${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS \ |
| -shared -shared-libgcc -o conftest.so \ |
| conftest.c -v 2>&1 >/dev/null \ |
| | sed -n 's/^.* -lgcc_s\([^ ]*\) .*$/\1/p'` |
| changequote([,])dnl |
| rm -f conftest.c conftest.so |
| if test x${glibcxx_libgcc_s_suffix+set} = xset; then |
| CFLAGS=" -lgcc_s$glibcxx_libgcc_s_suffix" |
| AC_TRY_LINK(, [return 0;], glibcxx_shared_libgcc=yes) |
| CFLAGS="$ac_save_CFLAGS" |
| fi |
| fi |
| AC_MSG_RESULT($glibcxx_shared_libgcc) |
| |
| # For GNU ld, we need at least this version. The format is described in |
| # GLIBCXX_CHECK_LINKER_FEATURES above. |
| glibcxx_min_gnu_ld_version=21400 |
| |
| # If no shared libgcc, can't win. |
| if test $glibcxx_shared_libgcc != yes; then |
| AC_MSG_WARN([=== You have requested GNU symbol versioning, but]) |
| AC_MSG_WARN([=== you are not building a shared libgcc_s.]) |
| AC_MSG_WARN([=== Symbol versioning will be disabled.]) |
| enable_symvers=no |
| elif test $with_gnu_ld != yes && test $enable_symvers = sun; then |
| : All interesting versions of Sun ld support sun style symbol versioning. |
| elif test $with_gnu_ld != yes ; then |
| # just fail for now |
| AC_MSG_WARN([=== You have requested GNU symbol versioning, but]) |
| 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) |
| AC_MSG_WARN(=== full symbol versioning support in this release of GCC.) |
| AC_MSG_WARN(=== You would need to upgrade your binutils to version) |
| AC_MSG_WARN(=== $glibcxx_min_gnu_ld_version or later and rebuild GCC.) |
| AC_MSG_WARN([=== Symbol versioning will be disabled.]) |
| enable_symvers=no |
| fi |
| fi |
| |
| # For libtool versioning info, format is CURRENT:REVISION:AGE |
| libtool_VERSION=6:29:0 |
| |
| # Everything parsed; figure out what files and settings to use. |
| case $enable_symvers in |
| no) |
| SYMVER_FILE=config/abi/pre/none.ver |
| ;; |
| gnu) |
| SYMVER_FILE=config/abi/pre/gnu.ver |
| AC_DEFINE(_GLIBCXX_SYMVER_GNU, 1, |
| [Define to use GNU versioning in the shared library.]) |
| ;; |
| gnu-versioned-namespace) |
| libtool_VERSION=8:0:0 |
| SYMVER_FILE=config/abi/pre/gnu-versioned-namespace.ver |
| AC_DEFINE(_GLIBCXX_SYMVER_GNU_NAMESPACE, 1, |
| [Define to use GNU namespace versioning in the shared library.]) |
| ;; |
| darwin) |
| SYMVER_FILE=config/abi/pre/gnu.ver |
| AC_DEFINE(_GLIBCXX_SYMVER_DARWIN, 1, |
| [Define to use darwin versioning in the shared library.]) |
| ;; |
| sun) |
| SYMVER_FILE=config/abi/pre/gnu.ver |
| AC_DEFINE(_GLIBCXX_SYMVER_SUN, 1, |
| [Define to use Sun versioning in the shared library.]) |
| ;; |
| esac |
| |
| if test x$enable_symvers != xno ; then |
| AC_DEFINE(_GLIBCXX_SYMVER, 1, |
| [Define to use symbol versioning in the shared library.]) |
| fi |
| |
| AC_CACHE_CHECK([whether the target supports .symver directive], |
| glibcxx_cv_have_as_symver_directive, [ |
| AC_TRY_COMPILE([void foo (void); __asm (".symver foo, bar@SYMVER");], |
| [], glibcxx_cv_have_as_symver_directive=yes, |
| glibcxx_cv_have_as_symver_directive=no)]) |
| if test $glibcxx_cv_have_as_symver_directive = yes; then |
| AC_DEFINE(HAVE_AS_SYMVER_DIRECTIVE, 1, |
| [Define to 1 if the target assembler supports .symver directive.]) |
| fi |
| |
| AC_SUBST(SYMVER_FILE) |
| AC_SUBST(port_specific_symbol_files) |
| GLIBCXX_CONDITIONAL(ENABLE_SYMVERS, test $enable_symvers != no) |
| GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU, test $enable_symvers = gnu) |
| GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_GNU_NAMESPACE, test $enable_symvers = gnu-versioned-namespace) |
| GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_DARWIN, test $enable_symvers = darwin) |
| GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SUN, test $enable_symvers = sun) |
| AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers) |
| |
| if test $enable_symvers != no ; then |
| case ${target_os} in |
| # The Solaris 2 runtime linker doesn't support the GNU extension of |
| # binding the same symbol to different versions |
| solaris2*) |
| ;; |
| # Other platforms with GNU symbol versioning (GNU/Linux, more?) do. |
| *) |
| AC_DEFINE(HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT, 1, |
| [Define to 1 if the target runtime linker supports binding the same symbol to different versions.]) |
| ;; |
| esac |
| fi |
| |
| # Now, set up compatibility support, if any. |
| # In addition, need this to deal with std::size_t mangling in |
| # src/compatibility.cc. In a perfect world, could use |
| # typeid(std::size_t).name()[0] to do direct substitution. |
| AC_MSG_CHECKING([for size_t as unsigned int]) |
| ac_save_CFLAGS="$CFLAGS" |
| CFLAGS="-Werror" |
| AC_TRY_COMPILE(, [__SIZE_TYPE__* stp; unsigned int* uip; stp = uip;], |
| [glibcxx_size_t_is_i=yes], [glibcxx_size_t_is_i=no]) |
| CFLAGS=$ac_save_CFLAGS |
| if test "$glibcxx_size_t_is_i" = yes; then |
| AC_DEFINE(_GLIBCXX_SIZE_T_IS_UINT, 1, [Define if size_t is unsigned int.]) |
| fi |
| AC_MSG_RESULT([$glibcxx_size_t_is_i]) |
| |
| AC_MSG_CHECKING([for ptrdiff_t as int]) |
| ac_save_CFLAGS="$CFLAGS" |
| CFLAGS="-Werror" |
| AC_TRY_COMPILE(, [__PTRDIFF_TYPE__* ptp; int* ip; ptp = ip;], |
| [glibcxx_ptrdiff_t_is_i=yes], [glibcxx_ptrdiff_t_is_i=no]) |
| CFLAGS=$ac_save_CFLAGS |
| if test "$glibcxx_ptrdiff_t_is_i" = yes; then |
| AC_DEFINE(_GLIBCXX_PTRDIFF_T_IS_INT, 1, [Define if ptrdiff_t is int.]) |
| fi |
| AC_MSG_RESULT([$glibcxx_ptrdiff_t_is_i]) |
| ]) |
| |
| |
| dnl |
| dnl Setup to use the gcc gthr.h thread-specific memory and mutex model. |
| dnl We must stage the required headers so that they will be installed |
| dnl with the library (unlike libgcc, the STL implementation is provided |
| dnl solely within headers). Since we must not inject random user-space |
| dnl macro names into user-provided C++ code, we first stage into <file>-in |
| dnl and process to <file> with an output command. The reason for a two- |
| dnl stage process here is to correctly handle $srcdir!=$objdir without |
| dnl having to write complex code (the sed commands to clean the macro |
| dnl namespace are complex and fragile enough as it is). We must also |
| dnl add a relative path so that -I- is supported properly. |
| dnl |
| dnl Substs: |
| dnl thread_header |
| dnl |
| AC_DEFUN([GLIBCXX_ENABLE_THREADS], [ |
| AC_MSG_CHECKING([for thread model used by GCC]) |
| target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'` |
| AC_MSG_RESULT([$target_thread_file]) |
| GCC_AC_THREAD_HEADER([$target_thread_file]) |
| ]) |
| |
| |
| dnl |
| dnl Check if gthread implementation defines the types and functions |
| dnl required by the c++0x thread library. Conforming gthread |
| dnl implementations can define __GTHREADS_CXX0X to enable use with c++0x. |
| dnl |
| dnl GLIBCXX_ENABLE_SYMVERS must be done before this. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [ |
| GLIBCXX_ENABLE(libstdcxx-threads,auto,,[enable C++11 threads support]) |
| |
| if test x$enable_libstdcxx_threads = xauto || |
| test x$enable_libstdcxx_threads = xyes; then |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions \ |
| -I${toplevel_srcdir}/libgcc -I${toplevel_builddir}/libgcc" |
| |
| target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'` |
| case $target_thread_file in |
| posix) |
| CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS" |
| esac |
| |
| AC_MSG_CHECKING([whether it can be safely assumed that mutex_timedlock is available]) |
| |
| AC_TRY_COMPILE([#include <unistd.h>], |
| [ |
| // In case of POSIX threads check _POSIX_TIMEOUTS. |
| #if (defined(_PTHREADS) \ |
| && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0)) |
| #error |
| #endif |
| ], [ac_gthread_use_mutex_timedlock=1], [ac_gthread_use_mutex_timedlock=0]) |
| |
| AC_DEFINE_UNQUOTED(_GTHREAD_USE_MUTEX_TIMEDLOCK, $ac_gthread_use_mutex_timedlock, |
| [Define to 1 if mutex_timedlock is available.]) |
| |
| if test $ac_gthread_use_mutex_timedlock = 1 ; then res_mutex_timedlock=yes ; |
| else res_mutex_timedlock=no ; fi |
| AC_MSG_RESULT([$res_mutex_timedlock]) |
| |
| AC_MSG_CHECKING([for gthreads library]) |
| |
| AC_TRY_COMPILE([#include "gthr.h"], |
| [ |
| #ifndef __GTHREADS_CXX0X |
| #error |
| #endif |
| ], [ac_has_gthreads=yes], [ac_has_gthreads=no]) |
| else |
| ac_has_gthreads=no |
| fi |
| |
| AC_MSG_RESULT([$ac_has_gthreads]) |
| |
| if test x"$ac_has_gthreads" = x"yes"; then |
| AC_DEFINE(_GLIBCXX_HAS_GTHREADS, 1, |
| [Define if gthreads library is available.]) |
| |
| # Also check for pthread_rwlock_t for std::shared_timed_mutex in C++14 |
| # but only do so if we're using pthread in the gthread library. |
| # On VxWorks for example, pthread_rwlock_t is defined in sys/types.h |
| # but the pthread library is not there by default and the gthread library |
| # does not use it. |
| AC_TRY_COMPILE([#include "gthr.h"], |
| [ |
| #if (!defined(_PTHREADS)) |
| #error |
| #endif |
| ], [ac_gthread_use_pthreads=yes], [ac_gthread_use_pthreads=no]) |
| if test x"$ac_gthread_use_pthreads" = x"yes"; then |
| AC_CHECK_TYPE([pthread_rwlock_t], |
| [AC_DEFINE([_GLIBCXX_USE_PTHREAD_RWLOCK_T], 1, |
| [Define if POSIX read/write locks are available in <gthr.h>.])], |
| [], |
| [#include "gthr.h"]) |
| fi |
| fi |
| |
| AC_CHECK_HEADER(semaphore.h, [ |
| AC_MSG_CHECKING([for POSIX Semaphores and sem_timedwait]) |
| AC_TRY_COMPILE([ |
| #include <unistd.h> |
| #include <semaphore.h> |
| #include <limits.h> |
| ], |
| [ |
| #if !defined _POSIX_TIMEOUTS || _POSIX_TIMEOUTS <= 0 |
| # error "POSIX Timeouts option not supported" |
| #elif !defined _POSIX_SEMAPHORES || _POSIX_SEMAPHORES <= 0 |
| # error "POSIX Semaphores option not supported" |
| #else |
| #if defined SEM_VALUE_MAX |
| constexpr int sem_value_max = SEM_VALUE_MAX; |
| #elif defined _POSIX_SEM_VALUE_MAX |
| constexpr int sem_value_max = _POSIX_SEM_VALUE_MAX; |
| #else |
| # error "SEM_VALUE_MAX not available" |
| #endif |
| sem_t sem; |
| sem_init(&sem, 0, sem_value_max); |
| struct timespec ts = { 0 }; |
| sem_timedwait(&sem, &ts); |
| #endif |
| ], |
| [ac_have_posix_semaphore=yes], |
| [ac_have_posix_semaphore=no])], |
| [ac_have_posix_semaphore=no]) |
| |
| if test $ac_have_posix_semaphore = yes ; then |
| AC_DEFINE(HAVE_POSIX_SEMAPHORE, |
| 1, |
| [Define to 1 if POSIX Semaphores with sem_timedwait are available in <semaphore.h>.]) |
| fi |
| AC_MSG_RESULT([$ac_have_posix_semaphore]) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| |
| # Check whether LC_MESSAGES is available in <locale.h>. |
| # Ulrich Drepper <drepper@cygnus.com>, 1995. |
| # |
| # This file file be copied and used freely without restrictions. It can |
| # 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. |
| AC_DEFUN([AC_LC_MESSAGES], [ |
| AC_CHECK_HEADER(locale.h, [ |
| AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES, |
| [AC_TRY_COMPILE([#include <locale.h>], [return LC_MESSAGES], |
| ac_cv_val_LC_MESSAGES=yes, ac_cv_val_LC_MESSAGES=no)]) |
| if test $ac_cv_val_LC_MESSAGES = yes; then |
| AC_DEFINE(HAVE_LC_MESSAGES, 1, |
| [Define if LC_MESSAGES is available in <locale.h>.]) |
| fi |
| ]) |
| ]) |
| |
| dnl |
| dnl Check whether rdrand is supported in the assembler. |
| AC_DEFUN([GLIBCXX_CHECK_X86_RDRAND], [ |
| AC_MSG_CHECKING([for rdrand support in assembler]) |
| AC_CACHE_VAL(ac_cv_x86_rdrand, [ |
| ac_cv_x86_rdrand=no |
| case "$target" in |
| i?86-*-* | \ |
| x86_64-*-*) |
| AC_TRY_COMPILE(, [asm("rdrand %eax");], |
| [ac_cv_x86_rdrand=yes], [ac_cv_x86_rdrand=no]) |
| esac |
| ]) |
| if test $ac_cv_x86_rdrand = yes; then |
| AC_DEFINE(_GLIBCXX_X86_RDRAND, 1, |
| [ Defined if as can handle rdrand. ]) |
| fi |
| AC_MSG_RESULT($ac_cv_x86_rdrand) |
| ]) |
| |
| dnl |
| dnl Check whether rdseed is supported in the assembler. |
| AC_DEFUN([GLIBCXX_CHECK_X86_RDSEED], [ |
| AC_MSG_CHECKING([for rdseed support in assembler]) |
| AC_CACHE_VAL(ac_cv_x86_rdseed, [ |
| ac_cv_x86_rdseed=no |
| case "$target" in |
| i?86-*-* | \ |
| x86_64-*-*) |
| AC_TRY_COMPILE(, [asm("rdseed %eax");], |
| [ac_cv_x86_rdseed=yes], [ac_cv_x86_rdseed=no]) |
| esac |
| ]) |
| if test $ac_cv_x86_rdseed = yes; then |
| AC_DEFINE(_GLIBCXX_X86_RDSEED, 1, |
| [ Defined if as can handle rdseed. ]) |
| fi |
| AC_MSG_RESULT($ac_cv_x86_rdseed) |
| ]) |
| |
| dnl |
| dnl Check whether get_nprocs is available in <sys/sysinfo.h>, and define _GLIBCXX_USE_GET_NPROCS. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_GET_NPROCS], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| |
| AC_MSG_CHECKING([for get_nprocs]) |
| AC_CACHE_VAL(glibcxx_cv_GET_NPROCS, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <sys/sysinfo.h>], |
| [int n = get_nprocs();], |
| [glibcxx_cv_GET_NPROCS=yes], |
| [glibcxx_cv_GET_NPROCS=no]) |
| ]) |
| if test $glibcxx_cv_GET_NPROCS = yes; then |
| AC_DEFINE(_GLIBCXX_USE_GET_NPROCS, 1, [Define if get_nprocs is available in <sys/sysinfo.h>.]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_GET_NPROCS) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check whether sysconf(_SC_NPROCESSORS_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROCESSORS_ONLN. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_SC_NPROCESSORS_ONLN], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| |
| AC_MSG_CHECKING([for _SC_NPROCESSORS_ONLN]) |
| AC_CACHE_VAL(glibcxx_cv_SC_NPROCESSORS_ONLN, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <unistd.h>], |
| [int n = sysconf(_SC_NPROCESSORS_ONLN);], |
| [glibcxx_cv_SC_NPROCESSORS_ONLN=yes], |
| [glibcxx_cv_SC_NPROCESSORS_ONLN=no]) |
| ]) |
| if test $glibcxx_cv_SC_NPROCESSORS_ONLN = yes; then |
| AC_DEFINE(_GLIBCXX_USE_SC_NPROCESSORS_ONLN, 1, [Define if _SC_NPROCESSORS_ONLN is available in <unistd.h>.]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_SC_NPROCESSORS_ONLN) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check whether sysconf(_SC_NPROC_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROC_ONLN. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_SC_NPROC_ONLN], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| |
| AC_MSG_CHECKING([for _SC_NPROC_ONLN]) |
| AC_CACHE_VAL(glibcxx_cv_SC_NPROC_ONLN, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <unistd.h>], |
| [int n = sysconf(_SC_NPROC_ONLN);], |
| [glibcxx_cv_SC_NPROC_ONLN=yes], |
| [glibcxx_cv_SC_NPROC_ONLN=no]) |
| ]) |
| if test $glibcxx_cv_SC_NPROC_ONLN = yes; then |
| AC_DEFINE(_GLIBCXX_USE_SC_NPROC_ONLN, 1, [Define if _SC_NPROC_ONLN is available in <unistd.h>.]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_SC_NPROC_ONLN) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check whether pthread_num_processors_np is available in <pthread.h>, and define _GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| |
| AC_MSG_CHECKING([for pthreads_num_processors_np]) |
| AC_CACHE_VAL(glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <pthread.h>], |
| [int n = pthread_num_processors_np();], |
| [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=yes], |
| [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=no]) |
| ]) |
| if test $glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP = yes; then |
| AC_DEFINE(_GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP, 1, [Define if pthreads_num_processors_np is available in <pthread.h>.]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check whether pthread_cond_clockwait is available in <pthread.h> for std::condition_variable to use, |
| dnl and define _GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| ac_save_LIBS="$LIBS" |
| LIBS="$LIBS -lpthread" |
| |
| AC_MSG_CHECKING([for pthread_cond_clockwait]) |
| AC_CACHE_VAL(glibcxx_cv_PTHREAD_COND_CLOCKWAIT, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <pthread.h>], |
| [pthread_mutex_t mutex; pthread_cond_t cond; struct timespec ts; int n = pthread_cond_clockwait(&cond, &mutex, 0, &ts);], |
| [glibcxx_cv_PTHREAD_COND_CLOCKWAIT=yes], |
| [glibcxx_cv_PTHREAD_COND_CLOCKWAIT=no]) |
| ]) |
| if test $glibcxx_cv_PTHREAD_COND_CLOCKWAIT = yes; then |
| AC_DEFINE(_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT, 1, [Define if pthread_cond_clockwait is available in <pthread.h>.]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_PTHREAD_COND_CLOCKWAIT) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| LIBS="$ac_save_LIBS" |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check whether pthread_mutex_clocklock is available in <pthread.h> for std::timed_mutex to use, |
| dnl and define _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| ac_save_LIBS="$LIBS" |
| LIBS="$LIBS -lpthread" |
| |
| AC_MSG_CHECKING([for pthread_mutex_clocklock]) |
| AC_CACHE_VAL(glibcxx_cv_PTHREAD_MUTEX_CLOCKLOCK, [ |
| GCC_TRY_COMPILE_OR_LINK( |
| [#include <pthread.h>], |
| [pthread_mutex_t mutex; struct timespec ts; int n = pthread_mutex_clocklock(&mutex, CLOCK_REALTIME, &ts);], |
| [glibcxx_cv_PTHREAD_MUTEX_CLOCKLOCK=yes], |
| [glibcxx_cv_PTHREAD_MUTEX_CLOCKLOCK=no]) |
| ]) |
| if test $glibcxx_cv_PTHREAD_MUTEX_CLOCKLOCK = yes; then |
| AC_DEFINE(_GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK, 1, [Define if pthread_mutex_clocklock is available in <pthread.h>.]) |
| fi |
| AC_MSG_RESULT($glibcxx_cv_PTHREAD_MUTEX_CLOCKLOCK) |
| |
| CXXFLAGS="$ac_save_CXXFLAGS" |
| LIBS="$ac_save_LIBS" |
| AC_LANG_RESTORE |
| ]) |
| |
| dnl |
| dnl Check whether pthread_mutex_clocklock is available in <pthread.h> for std::timed_mutex to use, |
| dnl and define _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK. |
| dnl |
| AC_DEFUN([GLIBCXX_CHECK_PTHREAD_RWLOCK_CLOCKLOCK], [ |
| |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| ac_save_CXXFLAGS="$CXXFLAGS" |
| CXXFLAGS="$CXXFLAGS -fno-exceptions" |
| ac_save_LIBS="$LIBS" |
| LIBS="$LIBS -lpthread" |
|