Mercurial > hg > CbC > CbC_gcc
view libstdc++-v3/acinclude.m4 @ 144:8f4e72ab4e11
fix segmentation fault caused by nothing next cur_op to end
| author | Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sun, 23 Dec 2018 21:23:56 +0900 |
| parents | 84e7813d76e9 |
| children | 1830386684a0 |
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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 $host. dnl dnl Sets: dnl SUBDIRS dnl Substs: dnl glibcxx_builddir (absolute path) dnl glibcxx_srcdir (absolute path) dnl toplevel_builddir (absolute path) dnl toplevel_srcdir (absolute path) dnl with_cross_host dnl with_newlib dnl with_target_subdir dnl plus dnl - the variables in GLIBCXX_CHECK_HOST / configure.host dnl - default settings for all AM_CONFITIONAL test variables dnl - lots of tools, like CC and CXX dnl AC_DEFUN([GLIBCXX_CONFIGURE], [ # Keep these sync'd with the list in Makefile.am. The first provides an # expandable list at autoconf time; the second provides an expandable list # (i.e., shell variable) at configure time. m4_define([glibcxx_SUBDIRS],[include libsupc++ src src/c++98 src/c++11 src/c++17 src/filesystem doc po testsuite python]) SUBDIRS='glibcxx_SUBDIRS' # These need to be absolute paths, yet at the same time need to # canonicalize only relative paths, because then amd will not unmount # drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd. glibcxx_builddir=`${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/GNU gold /GNU ld /;s/GNU ld version /GNU ld /;s/GNU ld ([^)]*) /GNU ld /;s/GNU ld \([0-9.][0-9.]*\).*/\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"$with_gnu_ld" = x"yes"; then AC_MSG_CHECKING([for ld that supports -Wl,-z,relro]) cxx_z_relo=`$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) 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], [ 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 $glibcxx_cv_setrlimit = yes; then ac_res_limits=yes AC_DEFINE(_GLIBCXX_RES_LIMITS, 1, [Define if using setrlimit to set resource limits during "make check"]) else ac_res_limits=no fi AC_MSG_RESULT($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 int64_t is available in <stdint.h>, and define HAVE_INT64_T. dnl Also check whether int64_t is actually a typedef to long or long long. dnl AC_DEFUN([GLIBCXX_CHECK_INT64_T], [ AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_MSG_CHECKING([for int64_t]) AC_CACHE_VAL(glibcxx_cv_INT64_T, [ AC_TRY_COMPILE( [#include <stdint.h>], [int64_t var;], [glibcxx_cv_INT64_T=yes], [glibcxx_cv_INT64_T=no]) ]) if test $glibcxx_cv_INT64_T = yes; then AC_DEFINE(HAVE_INT64_T, 1, [Define if int64_t is available in <stdint.h>.]) AC_MSG_RESULT($glibcxx_cv_INT64_T) AC_MSG_CHECKING([for int64_t as long]) AC_CACHE_VAL(glibcxx_cv_int64_t_long, [ AC_TRY_COMPILE( [#include <stdint.h> template<typename, typename> struct same { enum { value = -1 }; }; template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; }; int array[same<int64_t, long>::value];], [], [glibcxx_cv_int64_t_long=yes], [glibcxx_cv_int64_t_long=no]) ]) if test $glibcxx_cv_int64_t_long = yes; then AC_DEFINE(HAVE_INT64_T_LONG, 1, [Define if int64_t is a long.]) AC_MSG_RESULT($glibcxx_cv_int64_t_long) fi AC_MSG_CHECKING([for int64_t as long long]) AC_CACHE_VAL(glibcxx_cv_int64_t_long_long, [ AC_TRY_COMPILE( [#include <stdint.h> template<typename, typename> struct same { enum { value = -1 }; }; template<typename Tp> struct same<Tp, Tp> { enum { value = 1 }; }; int array[same<int64_t, long long>::value];], [], [glibcxx_cv_int64_t_long_long=yes], [glibcxx_cv_int64_t_long_long=no]) ]) if test $glibcxx_cv_int64_t_long_long = yes; then AC_DEFINE(HAVE_INT64_T_LONG_LONG, 1, [Define if int64_t is a long long.]) AC_MSG_RESULT($glibcxx_cv_int64_t_long_long) fi fi 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="$abi_baseline_subdir_switch" AC_SUBST(baseline_subdir_switch) ]) dnl dnl Does any necessary configuration for docbook in the docs directory. dnl dnl XSLTPROC must be set before this dnl dnl Sets: dnl glibcxx_stylesheets dnl Substs: dnl XSL_STYLE_DIR dnl AC_DEFUN([GLIBCXX_CONFIGURE_DOCBOOK], [ AC_MSG_CHECKING([for docbook stylesheets for documentation creation]) glibcxx_stylesheets=no if test x${XSLTPROC} = xyes && echo '<title/>' | xsltproc --noout --nonet --xinclude http://docbook.sourceforge.net/release/xsl-ns/current/xhtml-1_1/docbook.xsl - 2>/dev/null; then glibcxx_stylesheets=yes fi AC_MSG_RESULT($glibcxx_stylesheets) AC_MSG_CHECKING([for local stylesheet directory]) glibcxx_local_stylesheets=no if test x"$glibcxx_stylesheets" = x"yes"; then if test -d /usr/share/sgml/docbook/xsl-ns-stylesheets; then glibcxx_local_stylesheets=yes XSL_STYLE_DIR=/usr/share/sgml/docbook/xsl-ns-stylesheets fi if test -d /usr/share/xml/docbook/stylesheet/docbook-xsl-ns; then glibcxx_local_stylesheets=yes XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/docbook-xsl-ns fi if test -d /usr/share/xml/docbook/stylesheet/nwalsh5/current; then glibcxx_local_stylesheets=yes XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/nwalsh5/current fi fi AC_MSG_RESULT($glibcxx_local_stylesheets) if test x"$glibcxx_local_stylesheets" = x"yes"; then AC_SUBST(XSL_STYLE_DIR) AC_MSG_NOTICE($XSL_STYLE_DIR) else glibcxx_stylesheets=no fi # Check for epub3 dependencies. AC_MSG_CHECKING([for epub3 stylesheets for documentation creation]) glibcxx_epub_stylesheets=no if test x"$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) # 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}/${host_alias}' glibcxx_toolexeclibdir='${toolexecdir}/lib' 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 and libposix4 and, if needed, dnl links in the latter. 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 "${target_os}" in cygwin*) ac_has_nanosleep=yes ;; darwin*) ac_has_nanosleep=yes ac_has_sched_yield=yes ;; gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu) AC_MSG_CHECKING([for at least GNU libc 2.17]) AC_TRY_COMPILE( [#include <features.h>], [ #if ! __GLIBC_PREREQ(2, 17) #error #endif ], [glibcxx_glibc217=yes], [glibcxx_glibc217=no]) AC_MSG_RESULT($glibcxx_glibc217) if test x"$glibcxx_glibc217" = x"yes"; then ac_has_clock_monotonic=yes ac_has_clock_realtime=yes fi ac_has_nanosleep=yes ac_has_sched_yield=yes ;; freebsd*|netbsd*|dragonfly*|rtems*) ac_has_clock_monotonic=yes ac_has_clock_realtime=yes ac_has_nanosleep=yes ac_has_sched_yield=yes ;; openbsd*) ac_has_clock_monotonic=yes ac_has_clock_realtime=yes ac_has_nanosleep=yes ;; solaris*) GLIBCXX_LIBS="$GLIBCXX_LIBS -lrt" ac_has_clock_monotonic=yes ac_has_clock_realtime=yes 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 posix4]) AC_SEARCH_LIBS(nanosleep, [rt posix4]) else AC_SEARCH_LIBS(clock_gettime, [posix4]) AC_SEARCH_LIBS(nanosleep, [posix4]) 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 $ac_cv_search_nanosleep" ;; esac AC_SEARCH_LIBS(sched_yield, [rt posix4]) case "$ac_cv_search_sched_yield" in -lposix4*) GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield" ac_has_sched_yield=yes ;; -lrt*) if test x"$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 ${target_os} in linux*) AC_MSG_CHECKING([for clock_gettime syscall]) AC_TRY_COMPILE( [#include <unistd.h> #include <time.h> #include <sys/syscall.h> ], [#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK) timespec tp; #endif syscall(SYS_clock_gettime, CLOCK_MONOTONIC, &tp); syscall(SYS_clock_gettime, CLOCK_REALTIME, &tp); ], [ac_has_clock_monotonic_syscall=yes], [ac_has_clock_monotonic_syscall=no]) AC_MSG_RESULT($ac_has_clock_monotonic_syscall) if test x"$ac_has_clock_monotonic_syscall" = x"yes"; then AC_DEFINE(_GLIBCXX_USE_CLOCK_GETTIME_SYSCALL, 1, [ Defined if clock_gettime syscall has monotonic and realtime clock support. ]) ac_has_clock_monotonic=yes ac_has_clock_realtime=yes fi;; esac fi if test x"$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$ac_has_sleep" = x"nono"; then AC_MSG_CHECKING([for Sleep]) AC_TRY_COMPILE([#include <windows.h>], [Sleep(1)], [ac_has_win32_sleep=yes],[ac_has_win32_sleep=no]) if test x"$ac_has_win32_sleep" = x"yes"; then AC_DEFINE(HAVE_WIN32_SLEEP,1, [Defined if Sleep exists.]) fi AC_MSG_RESULT($ac_has_win32_sleep) fi AC_SUBST(GLIBCXX_LIBS) CXXFLAGS="$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 whether macros, etc are present for <system_error> dnl AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [ m4_pushdef([n_syserr], [1])dnl m4_foreach([syserr], [EOWNERDEAD, ENOTRECOVERABLE, ENOLINK, EPROTO, ENODATA, ENOSR, ENOSTR, ETIME, EBADMSG, ECANCELED, EOVERFLOW, ENOTSUP, EIDRM, ETXTBSY, ECHILD, ENOSPC, EPERM, ETIMEDOUT, EWOULDBLOCK], [m4_pushdef([SYSERR], m4_toupper(syserr))dnl AC_MSG_CHECKING([for syserr]) AC_CACHE_VAL([glibcxx_cv_system_error[]n_syserr], [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <errno.h>]], [int i = syserr;])], [glibcxx_cv_system_error[]n_syserr=yes], [glibcxx_cv_system_error[]n_syserr=no]) ]) AC_MSG_RESULT([$glibcxx_cv_system_error[]n_syserr]) if test x"$glibcxx_cv_system_error[]n_syserr" = x"yes"; then AC_DEFINE([HAVE_]SYSERR, 1, [Define if ]syserr[ exists.]) fi m4_define([n_syserr], m4_incr(n_syserr))dnl m4_popdef([SYSERR])dnl ]) m4_popdef([n_syserr])dnl ]) 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_std' or 'c_global'. dnl AC_DEFUN([GLIBCXX_ENABLE_CHEADERS], [ GLIBCXX_ENABLE(cheaders,$1,[[[=KIND]]], [construct "C" headers for g++], [permit c|c_std|c_global]) AC_MSG_NOTICE("C" header strategy set to $enable_cheaders) C_INCLUDE_DIR='${glibcxx_srcdir}/include/'$enable_cheaders # Allow overrides to configure.host here. if test $enable_cheaders = c_global; then c_compatibility=yes fi 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 ${target_os} in linux* | gnu* | kfreebsd*-gnu | knetbsd*-gnu) enable_clocale_flag=gnu ;; darwin*) enable_clocale_flag=darwin ;; dragonfly* | freebsd*) enable_clocale_flag=dragonfly ;; openbsd*) enable_clocale_flag=newlib ;; *) if test x"$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 ;; 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, or something specific. dnl dnl Default is stdio. 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]) # Now that libio has been removed, you can have any color you want as long # as it's black. This is one big no-op until other packages are added, but # showing the framework never hurts. 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) ;; 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]) GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library]) AC_MSG_RESULT($enable_libstdcxx_debug) 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 integer and floating point types. dnl dnl Note: also checks that the types aren't standard types. dnl dnl Defines: dnl _GLIBCXX_USE_INT128 dnl ENABLE_FLOAT128 dnl AC_DEFUN([GLIBCXX_ENABLE_INT128_FLOAT128], [ AC_LANG_SAVE AC_LANG_CPLUSPLUS # Fake what AC_TRY_COMPILE does, without linking as this is # unnecessary for this test. cat > conftest.$ac_ext << EOF [#]line __oline__ "configure" template<typename T1, typename T2> struct same { typedef T2 type; }; template<typename T> struct same<T, T>; int main() { typename same<long, __int128>::type i1; typename same<long long, __int128>::type i2; } EOF AC_MSG_CHECKING([for __int128]) if AC_TRY_EVAL(ac_compile); then AC_DEFINE(_GLIBCXX_USE_INT128, 1, [Define if __int128 is supported on this host.]) enable_int128=yes else enable_int128=no fi AC_MSG_RESULT($enable_int128) rm -f conftest* 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 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=6:26:0 # 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 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 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 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="$ac_save_CXXFLAGS" AC_LANG_RESTORE ]) dnl dnl Check whether sysctl is available in <pthread.h>, and define _GLIBCXX_USE_SYSCTL_HW_NCPU. dnl AC_DEFUN([GLIBCXX_CHECK_SYSCTL_HW_NCPU], [ AC_LANG_SAVE AC_LANG_CPLUSPLUS ac_save_CXXFLAGS="$CXXFLAGS" CXXFLAGS="$CXXFLAGS -fno-exceptions" AC_MSG_CHECKING([for hw.ncpu sysctl]) AC_CACHE_VAL(glibcxx_cv_SYSCTL_HW_NCPU, [ GCC_TRY_COMPILE_OR_LINK( [ #include <stddef.h> #include <sys/sysctl.h> ], [ int count; size_t size = sizeof(count); int mib[] = { CTL_HW, HW_NCPU }; sysctl(mib, 2, &count, &size, NULL, 0); ], [glibcxx_cv_SYSCTL_HW_NCPU=yes], [glibcxx_cv_SYSCTL_HW_NCPU=no]) ]) if test $glibcxx_cv_SYSCTL_HW_NCPU = yes; then AC_DEFINE(_GLIBCXX_USE_SYSCTL_HW_NCPU, 1, [Define if sysctl(), CTL_HW and HW_NCPU are available in <sys/sysctl.h>.]) fi AC_MSG_RESULT($glibcxx_cv_SYSCTL_HW_NCPU) CXXFLAGS="$ac_save_CXXFLAGS" AC_LANG_RESTORE ]) dnl dnl Check to see if python pretty printing can be activated. dnl dnl --with-python-dir=dir dnl installs directory into $prefix/dir AC_DEFUN([GLIBCXX_ENABLE_PYTHON], [ AC_MSG_CHECKING([for custom python install directory]) AC_ARG_WITH([python-dir], AS_HELP_STRING([--with-python-dir], [the location to install Python modules. This path is relative starting from the prefix.]), [with_python_dir=$withval], [with_python_dir="no"]) AC_MSG_RESULT(${with_python_dir}) # Needed for installing Python modules during make install. python_mod_dir="${with_python_dir}" AC_SUBST(python_mod_dir) GLIBCXX_CONDITIONAL(ENABLE_PYTHONDIR, test $python_mod_dir != no) ]) dnl dnl Check to see if -Werror is disabled. dnl dnl --enable-werror/--disable-werror AC_DEFUN([GLIBCXX_ENABLE_WERROR], [ AC_MSG_CHECKING([for -Werror]) GLIBCXX_ENABLE(werror,$1,,[turns on -Werror]) AC_MSG_RESULT($enable_werror) GLIBCXX_CONDITIONAL(ENABLE_WERROR, test $enable_werror = yes) ]) dnl dnl Check whether obsolescent tmpnam is available in <stdio.h>, dnl and define _GLIBCXX_USE_TMPNAM. dnl AC_DEFUN([GLIBCXX_CHECK_TMPNAM], [dnl dnl AC_LANG_SAVE AC_LANG_CPLUSPLUS ac_save_CXXFLAGS="$CXXFLAGS" CXXFLAGS="$CXXFLAGS -fno-exceptions" dnl AC_MSG_CHECKING([for tmpnam]) AC_CACHE_VAL(glibcxx_cv_TMPNAM, [dnl GCC_TRY_COMPILE_OR_LINK( [#include <stdio.h>], [char *tmp = tmpnam(NULL);], [glibcxx_cv_TMPNAM=yes], [glibcxx_cv_TMPNAM=no]) ]) if test $glibcxx_cv_TMPNAM = yes; then AC_DEFINE(_GLIBCXX_USE_TMPNAM, 1, [Define if obsolescent tmpnam is available in <stdio.h>.]) fi AC_MSG_RESULT($glibcxx_cv_TMPNAM) dnl CXXFLAGS="$ac_save_CXXFLAGS" AC_LANG_RESTORE ]) dnl dnl Check to see if sys/sdt.h exists and that it is suitable for use. dnl Some versions of sdt.h were not compatible with C++11. dnl AC_DEFUN([GLIBCXX_CHECK_SDT_H], [ AC_MSG_CHECKING([for suitable sys/sdt.h]) # Note that this test has to be run with the C language. # Otherwise, sdt.h will try to include some headers from # libstdc++ itself. AC_LANG_SAVE AC_LANG_C AC_CACHE_VAL(glibcxx_cv_sys_sdt_h, [ # Because we have to run the test in C, we use grep rather # than the compiler to check for the bug. The bug is that # were strings without trailing whitespace, causing g++ # to look for operator"". The pattern searches for the fixed # output. AC_EGREP_CPP([ \",\" ], [ #include <sys/sdt.h> int f() { STAP_PROBE(hi, bob); } ], [glibcxx_cv_sys_sdt_h=yes], [glibcxx_cv_sys_sdt_h=no]) ]) AC_LANG_RESTORE if test $glibcxx_cv_sys_sdt_h = yes; then AC_DEFINE(HAVE_SYS_SDT_H, 1, [Define to 1 if you have a suitable <sys/sdt.h> header file]) fi AC_MSG_RESULT($glibcxx_cv_sys_sdt_h) ]) dnl dnl Control whether the library should define symbols for old and new ABIs. dnl This affects definitions of strings, stringstreams and locale facets. dnl dnl --disable-libstdcxx-dual-abi will use old ABI for all types. dnl dnl Defines: dnl _GLIBCXX_USE_DUAL_ABI (always defined, either to 1 or 0) dnl AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI], [ GLIBCXX_ENABLE(libstdcxx-dual-abi,$1,,[support two versions of std::string]) if test x$enable_symvers = xgnu-versioned-namespace; then # gnu-versioned-namespace is incompatible with the dual ABI. enable_libstdcxx_dual_abi="no" fi if test x"$enable_libstdcxx_dual_abi" != xyes; then AC_MSG_NOTICE([dual ABI is disabled]) default_libstdcxx_abi="gcc4-compatible" fi GLIBCXX_CONDITIONAL(ENABLE_DUAL_ABI, test $enable_libstdcxx_dual_abi = yes) ]) dnl dnl Check to see which ABI should be enabled by default. dnl dnl --with-default-libstdcxx-abi={gcc4-compatible,new} dnl dnl Defines: dnl _GLIBCXX_USE_CXX11_ABI (always defined, either to 1 or 0) dnl AC_DEFUN([GLIBCXX_DEFAULT_ABI], [ if test x$enable_libstdcxx_dual_abi = xyes; then AC_MSG_CHECKING([for default std::string ABI to use]) AC_ARG_WITH([default-libstdcxx-abi], AS_HELP_STRING([--with-default-libstdcxx-abi], [set the std::string ABI to use by default]), [case "$withval" in gcc4-compatible) default_libstdcxx_abi="gcc4-compatible" ;; new|cxx11) default_libstdcxx_abi="new" ;; c++*|gnu++*) AC_MSG_ERROR([Supported arguments for --with-default-libstdcxx-abi have changed, use "new" or "gcc4-compatible"]) ;; *) AC_MSG_ERROR([Invalid argument for --with-default-libstdcxx-abi]) ;; esac ], [default_libstdcxx_abi="new"]) AC_MSG_RESULT(${default_libstdcxx_abi}) fi if test $default_libstdcxx_abi = "new"; then glibcxx_cxx11_abi=1 glibcxx_cxx98_abi=0 else glibcxx_cxx11_abi=0 glibcxx_cxx98_abi=1 fi AC_SUBST(glibcxx_cxx98_abi) GLIBCXX_CONDITIONAL(ENABLE_CXX11_ABI, test $glibcxx_cxx11_abi = 1) ]) dnl dnl Check to see whether to build libstdc++fs.a dnl dnl --enable-libstdcxx-filesystem-ts dnl AC_DEFUN([GLIBCXX_ENABLE_FILESYSTEM_TS], [ GLIBCXX_ENABLE(libstdcxx-filesystem-ts,auto,, [turns on ISO/IEC TS 18822 support], [permit yes|no|auto]) AC_MSG_CHECKING([whether to build Filesystem TS support]) if test x"$ac_cv_header_dirent_h" != x"yes"; then enable_libstdcxx_filesystem_ts=no fi if test x"$enable_libstdcxx_filesystem_ts" = x"auto"; then case "${target_os}" in freebsd*|netbsd*|openbsd*|dragonfly*|darwin*) enable_libstdcxx_filesystem_ts=yes ;; gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu) enable_libstdcxx_filesystem_ts=yes ;; rtems*) enable_libstdcxx_filesystem_ts=yes ;; solaris*) enable_libstdcxx_filesystem_ts=yes ;; *) enable_libstdcxx_filesystem_ts=no ;; esac fi AC_MSG_RESULT($enable_libstdcxx_filesystem_ts) GLIBCXX_CONDITIONAL(ENABLE_FILESYSTEM_TS, test $enable_libstdcxx_filesystem_ts = yes) ]) dnl dnl Check whether the library calls required by the Filesystem TS are present. dnl Defines: dnl HAVE_STRUCT_DIRENT_D_TYPE dnl _GLIBCXX_USE_REALPATH dnl _GLIBCXX_USE_UTIMENSAT dnl _GLIBCXX_USE_ST_MTIM dnl _GLIBCXX_USE_FCHMOD dnl _GLIBCXX_USE_FCHMODAT dnl _GLIBCXX_USE_SENDFILE dnl HAVE_LINK dnl HAVE_READLINK dnl HAVE_SYMLINK dnl AC_DEFUN([GLIBCXX_CHECK_FILESYSTEM_DEPS], [dnl dnl if test $enable_libstdcxx_filesystem_ts = yes; then AC_LANG_SAVE AC_LANG_CPLUSPLUS ac_save_CXXFLAGS="$CXXFLAGS" CXXFLAGS="$CXXFLAGS -fno-exceptions" dnl AC_MSG_CHECKING([for struct dirent.d_type]) AC_CACHE_VAL(glibcxx_cv_dirent_d_type, [dnl GCC_TRY_COMPILE_OR_LINK( [#include <dirent.h>], [ struct dirent d; if (sizeof d.d_type) return 0; ], [glibcxx_cv_dirent_d_type=yes], [glibcxx_cv_dirent_d_type=no]) ]) if test $glibcxx_cv_dirent_d_type = yes; then AC_DEFINE(HAVE_STRUCT_DIRENT_D_TYPE, 1, [Define to 1 if `d_type' is a member of `struct dirent'.]) fi AC_MSG_RESULT($glibcxx_cv_dirent_d_type) dnl AC_MSG_CHECKING([for realpath]) AC_CACHE_VAL(glibcxx_cv_realpath, [dnl GCC_TRY_COMPILE_OR_LINK( [ #include <limits.h> #include <stdlib.h> #include <unistd.h> ], [ #if _XOPEN_VERSION < 500 #error #elif _XOPEN_VERSION >= 700 || defined(PATH_MAX) char *tmp = realpath((const char*)NULL, (char*)NULL); #else #error #endif ], [glibcxx_cv_realpath=yes], [glibcxx_cv_realpath=no]) ]) if test $glibcxx_cv_realpath = yes; then AC_DEFINE(_GLIBCXX_USE_REALPATH, 1, [Define if usable realpath is available in <stdlib.h>.]) fi AC_MSG_RESULT($glibcxx_cv_realpath) dnl AC_MSG_CHECKING([for utimensat]) AC_CACHE_VAL(glibcxx_cv_utimensat, [dnl GCC_TRY_COMPILE_OR_LINK( [ #include <fcntl.h> #include <sys/stat.h> ], [ struct timespec ts[2] = { { 0, UTIME_OMIT }, { 1, 1 } }; int i = utimensat(AT_FDCWD, "path", ts, 0); ], [glibcxx_cv_utimensat=yes], [glibcxx_cv_utimensat=no]) ]) if test $glibcxx_cv_utimensat = yes; then AC_DEFINE(_GLIBCXX_USE_UTIMENSAT, 1, [Define if utimensat and UTIME_OMIT are available in <sys/stat.h> and AT_FDCWD in <fcntl.h>.]) fi AC_MSG_RESULT($glibcxx_cv_utimensat) dnl AC_MSG_CHECKING([for struct stat.st_mtim.tv_nsec]) AC_CACHE_VAL(glibcxx_cv_st_mtim, [dnl GCC_TRY_COMPILE_OR_LINK( [ #include <sys/stat.h> ], [ struct stat st; return st.st_mtim.tv_nsec; ], [glibcxx_cv_st_mtim=yes], [glibcxx_cv_st_mtim=no]) ]) if test $glibcxx_cv_st_mtim = yes; then AC_DEFINE(_GLIBCXX_USE_ST_MTIM, 1, [Define if struct stat has timespec members.]) fi AC_MSG_RESULT($glibcxx_cv_st_mtim) dnl AC_MSG_CHECKING([for fchmod]) AC_CACHE_VAL(glibcxx_cv_fchmod, [dnl GCC_TRY_COMPILE_OR_LINK( [#include <sys/stat.h>], [fchmod(1, S_IWUSR);], [glibcxx_cv_fchmod=yes], [glibcxx_cv_fchmod=no]) ]) if test $glibcxx_cv_fchmod = yes; then AC_DEFINE(_GLIBCXX_USE_FCHMOD, 1, [Define if fchmod is available in <sys/stat.h>.]) fi AC_MSG_RESULT($glibcxx_cv_fchmod) dnl AC_MSG_CHECKING([for fchmodat]) AC_CACHE_VAL(glibcxx_cv_fchmodat, [dnl GCC_TRY_COMPILE_OR_LINK( [ #include <fcntl.h> #include <sys/stat.h> ], [fchmodat(AT_FDCWD, "", 0, AT_SYMLINK_NOFOLLOW);], [glibcxx_cv_fchmodat=yes], [glibcxx_cv_fchmodat=no]) ]) if test $glibcxx_cv_fchmodat = yes; then AC_DEFINE(_GLIBCXX_USE_FCHMODAT, 1, [Define if fchmodat is available in <sys/stat.h>.]) fi AC_MSG_RESULT($glibcxx_cv_fchmodat) dnl AC_MSG_CHECKING([for sendfile that can copy files]) AC_CACHE_VAL(glibcxx_cv_sendfile, [dnl case "${target_os}" in gnu* | linux* | solaris*) GCC_TRY_COMPILE_OR_LINK( [#include <sys/sendfile.h>], [sendfile(1, 2, (off_t*)0, sizeof 1);], [glibcxx_cv_sendfile=yes], [glibcxx_cv_sendfile=no]) ;; *) glibcxx_cv_sendfile=no ;; esac ]) if test $glibcxx_cv_sendfile = yes; then AC_DEFINE(_GLIBCXX_USE_SENDFILE, 1, [Define if sendfile is available in <sys/sendfile.h>.]) fi AC_MSG_RESULT($glibcxx_cv_sendfile) dnl AC_MSG_CHECKING([for link]) AC_CACHE_VAL(glibcxx_cv_link, [dnl GCC_TRY_COMPILE_OR_LINK( [#include <unistd.h>], [link("", "");], [glibcxx_cv_link=yes], [glibcxx_cv_link=no]) ]) if test $glibcxx_cv_link = yes; then AC_DEFINE(HAVE_LINK, 1, [Define if link is available in <unistd.h>.]) fi AC_MSG_RESULT($glibcxx_cv_link) dnl AC_MSG_CHECKING([for readlink]) AC_CACHE_VAL(glibcxx_cv_readlink, [dnl GCC_TRY_COMPILE_OR_LINK( [#include <unistd.h>], [char buf[32]; readlink("", buf, sizeof(buf));], [glibcxx_cv_readlink=yes], [glibcxx_cv_readlink=no]) ]) if test $glibcxx_cv_readlink = yes; then AC_DEFINE(HAVE_READLINK, 1, [Define if readlink is available in <unistd.h>.]) fi AC_MSG_RESULT($glibcxx_cv_readlink) dnl AC_MSG_CHECKING([for symlink]) AC_CACHE_VAL(glibcxx_cv_symlink, [dnl GCC_TRY_COMPILE_OR_LINK( [#include <unistd.h>], [symlink("", "");], [glibcxx_cv_symlink=yes], [glibcxx_cv_symlink=no]) ]) if test $glibcxx_cv_symlink = yes; then AC_DEFINE(HAVE_SYMLINK, 1, [Define if symlink is available in <unistd.h>.]) fi AC_MSG_RESULT($glibcxx_cv_symlink) dnl CXXFLAGS="$ac_save_CXXFLAGS" AC_LANG_RESTORE fi ]) dnl dnl Check how size_t is mangled. Copied from libitm. dnl AC_DEFUN([GLIBCXX_CHECK_SIZE_T_MANGLING], [ AC_CACHE_CHECK([how size_t is mangled], glibcxx_cv_size_t_mangling, [ AC_TRY_COMPILE([], [extern __SIZE_TYPE__ x; extern unsigned long x;], [glibcxx_cv_size_t_mangling=m], [ AC_TRY_COMPILE([], [extern __SIZE_TYPE__ x; extern unsigned int x;], [glibcxx_cv_size_t_mangling=j], [ AC_TRY_COMPILE([], [extern __SIZE_TYPE__ x; extern unsigned long long x;], [glibcxx_cv_size_t_mangling=y], [ AC_TRY_COMPILE([], [extern __SIZE_TYPE__ x; extern unsigned short x;], [glibcxx_cv_size_t_mangling=t], [ AC_TRY_COMPILE([], [extern __SIZE_TYPE__ x; extern __int20 unsigned x;], [glibcxx_cv_size_t_mangling=u6uint20], [glibcxx_cv_size_t_mangling=x]) ]) ]) ]) ]) ]) if test $glibcxx_cv_size_t_mangling = x; then AC_MSG_ERROR([Unknown underlying type for size_t]) fi AC_DEFINE_UNQUOTED(_GLIBCXX_MANGLE_SIZE_T, [$glibcxx_cv_size_t_mangling], [Define to the letter to which size_t is mangled.]) ]) dnl dnl Determine whether std::exception_ptr symbols should be exported with dnl the symbol versions from GCC 4.6.0 or GCC 7.1.0, depending on which dnl release first added support for std::exception_ptr. Originally it was dnl only supported for targets with always-lock-free atomics for int, but dnl since GCC 7.1 it is supported for all targets. dnl AC_DEFUN([GLIBCXX_CHECK_EXCEPTION_PTR_SYMVER], [ if test $enable_symvers != no; then AC_MSG_CHECKING([for first version to support std::exception_ptr]) case ${target} in aarch64-*-* | alpha-*-* | hppa*-*-* | i?86-*-* | x86_64-*-* | \ m68k-*-* | powerpc*-*-* | s390*-*-* | *-*-solaris* ) ac_exception_ptr_since_gcc46=yes ;; *) # If the value of this macro changes then we will need to hardcode # yes/no here for additional targets based on the original value. AC_TRY_COMPILE([], [ #if __GCC_ATOMIC_INT_LOCK_FREE <= 1 # error atomic int not always lock free #endif ], [ac_exception_ptr_since_gcc46=yes], [ac_exception_ptr_since_gcc46=no]) ;; esac if test x"$ac_exception_ptr_since_gcc46" = x"yes" ; then AC_DEFINE(HAVE_EXCEPTION_PTR_SINCE_GCC46, 1, [Define to 1 if GCC 4.6 supported std::exception_ptr for the target]) AC_MSG_RESULT([4.6.0]) else AC_MSG_RESULT([7.1.0]) fi fi ]) # Macros from the top-level gcc directory. m4_include([../config/gc++filt.m4]) m4_include([../config/tls.m4]) m4_include([../config/gthr.m4]) m4_include([../config/cet.m4])