+
dnl
-dnl Initialize configure bits.
-dnl
-dnl GLIBCPP_TOPREL_CONFIGURE
-AC_DEFUN(GLIBCPP_TOPREL_CONFIGURE, [
- dnl Default to --enable-multilib (this is also passed by default
- dnl from the ubercommon-top-level configure)
- AC_ARG_ENABLE(multilib,
- [ --enable-multilib build hella library versions (default)],
- [case "${enableval}" in
- yes) multilib=yes ;;
- no) multilib=no ;;
- *) AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
- esac], [multilib=yes])dnl
-
- # When building with srcdir == objdir, links to the source files will
- # be created in directories within the target_subdir. We have to
- # adjust toplevel_srcdir accordingly, so that configure finds
- # install-sh and other auxiliary files that live in the top-level
- # source directory.
- if test "${srcdir}" = "."; then
- if test -z "${with_target_subdir}"; then
- toprel=".."
- else
- if test "${with_target_subdir}" != "."; then
- toprel="${with_multisrctop}../.."
- else
- toprel="${with_multisrctop}.."
- fi
- fi
- else
- toprel=".."
- fi
- AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
- toplevel_srcdir=\${top_srcdir}/$toprel
- AC_SUBST(toplevel_srcdir)
-])
+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 Initialize configure bits.
+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
-dnl GLIBCPP_CONFIGURE
-AC_DEFUN(GLIBCPP_CONFIGURE, [
+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])
+])
-#possibly test for the presence of the compiler sources here?
+dnl
+dnl Initialize the rest of the library configury. At this point we have
+dnl variables like $host.
+dnl
+dnl Sets:
+dnl SUBDIRS
+dnl Substs:
+dnl glibcxx_builddir (absolute path)
+dnl glibcxx_srcdir (absolute path)
+dnl toplevel_srcdir (absolute path)
+dnl with_cross_host
+dnl with_newlib
+dnl with_target_subdir
+dnl plus
+dnl - the variables in GLIBCXX_CHECK_HOST / configure.host
+dnl - default settings for all AM_CONFITIONAL test variables
+dnl - lots of tools, like CC and CXX
+dnl
+AC_DEFUN([GLIBCXX_CONFIGURE], [
+ # Keep these sync'd with the list in Makefile.am. The first provides an
+ # expandable list at autoconf time; the second provides an expandable list
+ # (i.e., shell variable) at configure time.
+ m4_define([glibcxx_SUBDIRS],[include libsupc++ src doc po testsuite])
+ SUBDIRS='glibcxx_SUBDIRS'
- # Export build and source directories.
# These need to be absolute paths, yet at the same time need to
# canonicalize only relative paths, because then amd will not unmount
# drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
- glibcpp_builddir=`${PWDCMD-pwd}`
+ glibcxx_builddir=`${PWDCMD-pwd}`
case $srcdir in
- [\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
- *) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
+ [\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;;
+ *) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
esac
- AC_SUBST(glibcpp_builddir)
- AC_SUBST(glibcpp_srcdir)
-
- dnl This is here just to satisfy automake.
- ifelse(not,equal,[AC_CONFIG_AUX_DIR(..)])
+ toplevel_srcdir=${glibcxx_srcdir}/..
+ AC_SUBST(glibcxx_builddir)
+ AC_SUBST(glibcxx_srcdir)
+ AC_SUBST(toplevel_srcdir)
- AC_PROG_AWK
- # Will set LN_S to either 'ln -s' or 'ln'. With autoconf 2.5x, can also
- # be 'cp -p' if linking isn't available. Uncomment the next line to
- # force a particular method.
- #ac_cv_prog_LN_S='cp -p'
+ # We use these options to decide which functions to include. They are
+ # set from the top level.
+ AC_ARG_WITH([target-subdir],
+ AC_HELP_STRING([--with-target-subdir=SUBDIR],
+ [configuring in a subdirectory]))
+
+ AC_ARG_WITH([cross-host],
+ AC_HELP_STRING([--with-cross-host=HOST],
+ [configuring with a cross compiler]))
+
+ AC_ARG_WITH([newlib],
+ AC_HELP_STRING([--with-newlib],
+ [assume newlib as a system C library]))
+
+ # We're almost certainly being configured before anything else which uses
+ # C++, so all of our AC_PROG_* discoveries will be cached. It's vital that
+ # we not cache the value of CXX that we "discover" here, because it's set
+ # to something unique for us and libjava. Other target libraries need to
+ # find CXX for themselves. We yank the rug out from under the normal AC_*
+ # process by sneakily renaming the cache variable. This also lets us debug
+ # the value of "our" CXX in postmortems.
+ #
+ # We must also force CXX to /not/ be a precious variable, otherwise the
+ # wrong (non-multilib-adjusted) value will be used in multilibs. This
+ # little trick also affects CPPFLAGS, CXXFLAGS, and LDFLAGS. And as a side
+ # effect, CXXFLAGS is no longer automagically subst'd, so we have to do
+ # that ourselves. Un-preciousing AC_PROG_CC also affects CC and CFLAGS.
+ #
+ # -fno-builtin must be present here so that a non-conflicting form of
+ # std::exit can be guessed by AC_PROG_CXX, and used in later tests.
+
+ m4_define([ac_cv_prog_CXX],[glibcxx_cv_prog_CXX])
+ m4_rename([_AC_ARG_VAR_PRECIOUS],[glibcxx_PRECIOUS])
+ m4_define([_AC_ARG_VAR_PRECIOUS],[])
+ save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-builtin"
+ AC_PROG_CC
+ AC_PROG_CXX
+ CXXFLAGS="$save_CXXFLAGS"
+ m4_rename([glibcxx_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
+ AC_SUBST(CFLAGS)
+ AC_SUBST(CXXFLAGS)
+
+ # 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
-
- # We use these options to decide which functions to include.
- AC_ARG_WITH(target-subdir,
- [ --with-target-subdir=SUBDIR
- configuring in a subdirectory])
- AC_ARG_WITH(cross-host,
- [ --with-cross-host=HOST configuring with a cross compiler])
-
- glibcpp_basedir=$srcdir/$toprel/$1/libstdc++-v3
- AC_SUBST(glibcpp_basedir)
-
- # Never versions of autoconf add an underscore to these functions.
- # Prevent future problems ...
- ifdef([AC_PROG_CC_G],[],[define([AC_PROG_CC_G],defn([_AC_PROG_CC_G]))])
- ifdef([AC_PROG_CC_GNU],[],[define([AC_PROG_CC_GNU],defn([_AC_PROG_CC_GNU]))])
- ifdef([AC_PROG_CXX_G],[],[define([AC_PROG_CXX_G],defn([_AC_PROG_CXX_G]))])
- ifdef([AC_PROG_CXX_GNU],[],[define([AC_PROG_CXX_GNU],defn([_AC_PROG_CXX_GNU]))])
-
- # AC_PROG_CC
- # FIXME: We temporarily define our own version of AC_PROG_CC. This is
- # copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
- # are probably using a cross compiler, which will not be able to fully
- # link an executable. This is addressed in later versions of autoconf.
-
- AC_DEFUN(LIB_AC_PROG_CC,
- [AC_BEFORE([$0], [AC_PROG_CPP])dnl
- dnl Fool anybody using AC_PROG_CC.
- AC_PROVIDE([AC_PROG_CC])
- AC_CHECK_PROG(CC, gcc, gcc)
- if test -z "$CC"; then
- AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
- test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
- fi
-
- AC_PROG_CC_GNU
-
- if test $ac_cv_prog_gcc = yes; then
- GCC=yes
- dnl Check whether -g works, even if CFLAGS is set, in case the package
- dnl plays around with CFLAGS (such as to build both debugging and
- dnl normal versions of a library), tasteless as that idea is.
- ac_test_CFLAGS="${CFLAGS+set}"
- ac_save_CFLAGS="$CFLAGS"
- CFLAGS=
- AC_PROG_CC_G
- if test "$ac_test_CFLAGS" = set; then
- CFLAGS="$ac_save_CFLAGS"
- elif test $ac_cv_prog_cc_g = yes; then
- CFLAGS="-g -O2"
- else
- CFLAGS="-O2"
- fi
- else
- GCC=
- test "${CFLAGS+set}" = set || CFLAGS="-g"
- fi
- ])
-
- LIB_AC_PROG_CC
-
- # Likewise for AC_PROG_CXX. We can't just call it directly because g++
- # will try to link in libstdc++.
- AC_DEFUN(LIB_AC_PROG_CXX,
- [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
- dnl Fool anybody using AC_PROG_CXX.
- AC_PROVIDE([AC_PROG_CXX])
- # Use glibcpp_CXX so that we do not cause CXX to be cached with the
- # flags that come in CXX while configuring libstdc++. They're different
- # from those used for all other target libraries. If CXX is set in
- # the environment, respect that here.
- glibcpp_CXX=$CXX
- AC_CHECK_PROGS(glibcpp_CXX, $CCC c++ g++ gcc CC cxx cc++, gcc)
- AC_SUBST(glibcpp_CXX)
- CXX=$glibcpp_CXX
- test -z "$glibcpp_CXX" && AC_MSG_ERROR([no acceptable c++ found in \$PATH])
-
- AC_PROG_CXX_GNU
-
- if test $ac_cv_prog_gxx = yes; then
- GXX=yes
- dnl Check whether -g works, even if CXXFLAGS is set, in case the package
- dnl plays around with CXXFLAGS (such as to build both debugging and
- dnl normal versions of a library), tasteless as that idea is.
- ac_test_CXXFLAGS="${CXXFLAGS+set}"
- ac_save_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS=
- AC_PROG_CXX_G
- if test "$ac_test_CXXFLAGS" = set; then
- CXXFLAGS="$ac_save_CXXFLAGS"
- elif test $ac_cv_prog_cxx_g = yes; then
- CXXFLAGS="-g -O2"
- else
- CXXFLAGS="-O2"
- fi
- else
- GXX=
- test "${CXXFLAGS+set}" = set || CXXFLAGS="-g"
- fi
- ])
-
- LIB_AC_PROG_CXX
-
- # For directory versioning (e.g., headers) and other variables.
- AC_MSG_CHECKING([for GCC version number])
- gcc_version=`$glibcpp_CXX -dumpversion`
- AC_MSG_RESULT($gcc_version)
-
- # For some reason, gettext needs this.
- AC_ISC_POSIX
+ #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)
- AC_PROG_INSTALL
AM_MAINTAINER_MODE
- # We need AC_EXEEXT to keep automake happy in cygnus mode. However,
- # at least currently, we never actually build a program, so we never
- # need to use $(EXEEXT). Moreover, the test for EXEEXT normally
- # fails, because we are probably configuring with a cross compiler
- # which can't create executables. So we include AC_EXEEXT to keep
- # automake happy, but we don't execute it, since we don't care about
- # the result.
- if false; then
- # autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
- # to nothing, so nothing would remain between `then' and `fi' if it
- # were not for the `:' below.
- :
- AC_EXEEXT
- fi
-
- case [$]{glibcpp_basedir} in
- /* | [A-Za-z]:[\\/]*) libgcj_flagbasedir=[$]{glibcpp_basedir} ;;
- *) glibcpp_flagbasedir='[$](top_builddir)/'[$]{glibcpp_basedir} ;;
- esac
-
- # Find platform-specific directories containing configuration info. In
- # addition to possibly modifying the same flags, it also sets up symlinks.
- GLIBCPP_CHECK_TARGET
-])
-
-
-dnl
-dnl Check to see if g++ can compile this library, and if so, if any version-
-dnl specific precautions need to be taken.
-dnl
-dnl GLIBCPP_CHECK_COMPILER_VERSION
-AC_DEFUN(GLIBCPP_CHECK_COMPILER_VERSION, [
-if test ! -f stamp-sanity-compiler; then
- AC_MSG_CHECKING([for g++ that will successfully compile libstdc++-v3])
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE(, [
- #if __GNUC__ < 3
- not_ok
+ # Set up safe default values for all subsequent AM_CONDITIONAL tests
+ # which are themselves conditionally expanded.
+ ## (Right now, this only matters for enable_wchar_t, but nothing prevents
+ ## other macros from doing the same. This should be automated.) -pme
+
+ # Check for uClibc since Linux platforms use different configuration
+ # directories depending on the C library in use.
+ AC_EGREP_CPP([_using_uclibc], [
+ #include <stdio.h>
+ #if __UCLIBC__
+ _using_uclibc
#endif
- ], gpp_satisfactory=yes, AC_MSG_ERROR([please upgrade to GCC 3.0 or above]))
- AC_LANG_RESTORE
- AC_MSG_RESULT($gpp_satisfactory)
- touch stamp-sanity-compiler
-fi
+ ], uclibc=yes, uclibc=no)
+
+ # Find platform-specific directories containing configuration info.
+ # Also possibly modify flags used elsewhere, as needed by the platform.
+ GLIBCXX_CHECK_HOST
])
dnl compiler versions but not older compiler versions still in use, should
dnl be placed here.
dnl
-dnl Define 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
-dnl Define SECTION_FLAGS='-ffunction-sections -fdata-sections' if
-dnl compiler supports it and the user has not requested debug mode.
+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
-dnl GLIBCPP_CHECK_COMPILER_FEATURES
-AC_DEFUN(GLIBCPP_CHECK_COMPILER_FEATURES, [
+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 GLIBCPP_CONFIGURE.
+ # found in GLIBCXX_CONFIGURE.
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
ac_test_CXXFLAGS="${CXXFLAGS+set}"
# Check for -ffunction-sections -fdata-sections
AC_MSG_CHECKING([for g++ that supports -ffunction-sections -fdata-sections])
- CXXFLAGS='-Werror -ffunction-sections -fdata-sections'
- AC_TRY_COMPILE(, [int foo;
- ], [ac_fdsections=yes], [ac_fdsections=no])
+ CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections'
+ AC_TRY_COMPILE([int foo; void bar() { };],, [ac_fdsections=yes], [ac_fdsections=no])
if test "$ac_test_CXXFLAGS" = set; then
CXXFLAGS="$ac_save_CXXFLAGS"
else
# this is the suspicious part
CXXFLAGS=''
fi
- if test x"$ac_fdsections" = x"yes" &&
- test x"$enable_debug" = x"no"; then
+ if test x"$ac_fdsections" = x"yes"; then
SECTION_FLAGS='-ffunction-sections -fdata-sections'
fi
AC_MSG_RESULT($ac_fdsections)
dnl the native linker is in use, all variables will be defined to something
dnl safe (like an empty string).
dnl
-dnl Define SECTION_LDFLAGS='-Wl,--gc-sections' if possible.
-dnl Define OPT_LDFLAGS='-Wl,-O1' if possible.
-dnl Define LD, with_gnu_ld, and (possibly) glibcpp_gnu_ld_version as
-dnl side-effects of testing.
+dnl Defines:
+dnl SECTION_LDFLAGS='-Wl,--gc-sections' if possible
+dnl OPT_LDFLAGS='-Wl,-O1' and '-z,relro' if possible
+dnl LD (as a side effect of testing)
+dnl Sets:
+dnl with_gnu_ld
+dnl glibcxx_ld_is_gold (set to "no" or "yes")
+dnl glibcxx_gnu_ld_version (possibly)
dnl
-dnl GLIBCPP_CHECK_LINKER_FEATURES
-AC_DEFUN(GLIBCPP_CHECK_LINKER_FEATURES, [
+dnl The last will be a single integer, e.g., version 1.23.45.0.67.89 will
+dnl set glibcxx_gnu_ld_version to 12345. Zeros cause problems.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_LINKER_FEATURES], [
# If we're not using GNU ld, then there's no point in even trying these
# tests. Check for that first. We should have already tested for gld
# by now (in libtool), but require it now just to be safe...
test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
AC_REQUIRE([AC_PROG_LD])
+ AC_REQUIRE([AC_PROG_AWK])
# The name set by libtool depends on the version of libtool. Shame on us
# for depending on an impl detail, but c'est la vie. Older versions used
# Start by getting the version number. I think the libtool test already
# does some of this, but throws away the result.
- changequote(,)
- ldver=`$LD --version 2>/dev/null | head -1 | \
- sed -e 's/GNU ld version \([0-9.][0-9.]*\).*/\1/'`
- changequote([,])
- glibcpp_gnu_ld_version=`echo $ldver | \
- $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
+ glibcxx_ld_is_gold=no
+ if test x"$with_gnu_ld" = x"yes"; then
+ AC_MSG_CHECKING([for ld version])
+ changequote(,)
+ if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
+ glibcxx_ld_is_gold=yes
+ fi
+ ldver=`$LD --version 2>/dev/null | head -1 | \
+ sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
+ changequote([,])
+ glibcxx_gnu_ld_version=`echo $ldver | \
+ $AWK -F. '{ if (NF<3) [$]3=0; print ([$]1*100+[$]2)*100+[$]3 }'`
+ AC_MSG_RESULT($glibcxx_gnu_ld_version)
+ fi
# Set --gc-sections.
- if test "$with_gnu_ld" = "notbroken"; then
- # GNU ld it is! Joy and bunny rabbits!
+ glibcxx_have_gc_sections=no
+ if test "$glibcxx_ld_is_gold" = "yes"; then
+ if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
+ glibcxx_have_gc_sections=yes
+ fi
+ else
+ glibcxx_gcsections_min_ld=21602
+ if test x"$with_gnu_ld" = x"yes" &&
+ test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
+ glibcxx_have_gc_sections=yes
+ fi
+ fi
+ if test "$glibcxx_have_gc_sections" = "yes"; then
+ # Sufficiently young GNU ld it is! Joy and bunny rabbits!
+ # NB: This flag only works reliably after 2.16.1. Configure tests
+ # for this are difficult, so hard wire a value that should work.
- # All these tests are for C++; save the language and the compiler flags.
- # Need to do this so that g++ won't try to link in libstdc++
ac_test_CFLAGS="${CFLAGS+set}"
ac_save_CFLAGS="$CFLAGS"
- CFLAGS='-x c++ -Wl,--gc-sections'
+ CFLAGS='-Wl,--gc-sections'
# Check for -Wl,--gc-sections
- # XXX This test is broken at the moment, as symbols required for
- # linking are now in libsupc++ (not built yet.....). In addition,
- # this test has cored on solaris in the past. In addition,
- # --gc-sections doesn't really work at the moment (keeps on discarding
- # used sections, first .eh_frame and now some of the glibc sections for
- # iconv). Bzzzzt. Thanks for playing, maybe next time.
AC_MSG_CHECKING([for ld that supports -Wl,--gc-sections])
- AC_TRY_RUN([
- int main(void)
- {
- try { throw 1; }
- catch (...) { };
- return 0;
- }
- ], [ac_sectionLDflags=yes],[ac_sectionLDflags=no], [ac_sectionLDflags=yes])
+ 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
- if test "$ac_sectionLDflags" = "yes"; then
- SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+ fi
+
+ # Set -z,relro.
+ # Note this is only for shared objects.
+ ac_ld_relro=no
+ if test x"$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($ac_sectionLDflags)
+ AC_MSG_RESULT($ac_ld_relro)
fi
# Set linker optimization flags.
- if test x"$with_gnu_ld" = x"yes" && test x"$enable_debug" = x"no"; then
+ if test x"$with_gnu_ld" = x"yes"; then
OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
fi
dnl
-dnl Check to see if the (math function) argument passed is
-dnl declared when using the c++ compiler
-dnl ASSUMES argument is a math function with ONE parameter
-dnl
-dnl GLIBCPP_CHECK_MATH_DECL_1
-AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_1, [
- AC_MSG_CHECKING([for $1 declaration])
- if test x${glibcpp_cv_func_$1_use+set} != xset; then
- AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE([#include <math.h>
- #ifdef HAVE_IEEEFP_H
- #include <ieeefp.h>
- #endif
- ],
- [ $1(0);],
- [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
- AC_LANG_RESTORE
+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 $setrlimit_have_headers = yes; then
+ # Can't do these in a loop, else the resulting syntax is wrong.
+ GLIBCXX_CHECK_SETRLIMIT_ancilliary(DATA)
+ GLIBCXX_CHECK_SETRLIMIT_ancilliary(RSS)
+ GLIBCXX_CHECK_SETRLIMIT_ancilliary(VMEM)
+ GLIBCXX_CHECK_SETRLIMIT_ancilliary(AS)
+ GLIBCXX_CHECK_SETRLIMIT_ancilliary(FSIZE)
+
+ # Check for rlimit, setrlimit.
+ AC_CACHE_VAL(glibcxx_cv_setrlimit, [
+ AC_TRY_COMPILE(
+ [#include <unistd.h>
+ #include <sys/time.h>
+ #include <sys/resource.h>
+ ],
+ [struct rlimit r;
+ setrlimit(0, &r);],
+ [glibcxx_cv_setrlimit=yes], [glibcxx_cv_setrlimit=no])
])
fi
- AC_MSG_RESULT($glibcpp_cv_func_$1_use)
-])
-dnl
-dnl Check to see if the (math function) argument passed is
-dnl 1) declared when using the c++ compiler
-dnl 2) has "C" linkage
-dnl 3) if not, see if 1) and 2) for argument prepended with '_'
-dnl
-dnl Define HAVE_CARGF etc if "cargf" is declared and links
-dnl
-dnl argument 1 is name of function to check
-dnl
-dnl ASSUMES argument is a math function with ONE parameter
-dnl
-dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1
-AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, [
- GLIBCPP_CHECK_MATH_DECL_1($1)
- if test x$glibcpp_cv_func_$1_use = x"yes"; then
- AC_CHECK_FUNCS($1)
+ 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
- GLIBCPP_CHECK_MATH_DECL_1(_$1)
- if test x$glibcpp_cv_func__$1_use = x"yes"; then
- AC_CHECK_FUNCS(_$1)
- fi
+ ac_res_limits=no
fi
+ AC_MSG_RESULT($ac_res_limits)
])
dnl
-dnl Like GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1, but does a bunch of
-dnl of functions at once. It's an all-or-nothing check -- either
-dnl HAVE_XYZ is defined for each of the functions, or for none of them.
-dnl Doing it this way saves significant configure time.
-AC_DEFUN(GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1, [
- AC_MSG_CHECKING([for $1 functions])
- AC_CACHE_VAL(glibcpp_cv_func_$2_use, [
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE([#include <math.h>],
- [ `for x in $3; do echo "$x (0);"; done` ],
- [glibcpp_cv_func_$2_use=yes],
- [glibcpp_cv_func_$2_use=no])
- AC_LANG_RESTORE])
- AC_MSG_RESULT($glibcpp_cv_func_$2_use)
- if test x$glibcpp_cv_func_$2_use = x"yes"; then
- AC_CHECK_FUNCS($3)
+dnl Check whether S_ISREG (Posix) or S_IFREG is available in <sys/stat.h>.
+dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$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_IFREG 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 to see if the (math function) argument passed is
-dnl declared when using the c++ compiler
-dnl ASSUMES argument is a math function with TWO parameters
-dnl
-dnl GLIBCPP_CHECK_MATH_DECL_2
-AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_2, [
- AC_MSG_CHECKING([for $1 declaration])
- if test x${glibcpp_cv_func_$1_use+set} != xset; then
- AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE([#include <math.h>],
- [ $1(0, 0);],
- [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
- AC_LANG_RESTORE
- ])
+dnl Check whether poll is available in <poll.h>, and define HAVE_POLL.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_POLL], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$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 $glibcxx_cv_POLL = yes; then
+ AC_DEFINE(HAVE_POLL, 1, [Define if poll is available in <poll.h>.])
fi
- AC_MSG_RESULT($glibcpp_cv_func_$1_use)
+ AC_MSG_RESULT($glibcxx_cv_POLL)
+
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
])
+
dnl
-dnl Check to see if the (math function) argument passed is
-dnl 1) declared when using the c++ compiler
-dnl 2) has "C" linkage
-dnl
-dnl Define HAVE_CARGF etc if "cargf" is declared and links
-dnl
-dnl argument 1 is name of function to check
-dnl
-dnl ASSUMES argument is a math function with TWO parameters
+dnl Check whether writev is available in <sys/uio.h>, and define HAVE_WRITEV.
dnl
-dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2
-AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2, [
- GLIBCPP_CHECK_MATH_DECL_2($1)
- if test x$glibcpp_cv_func_$1_use = x"yes"; then
- AC_CHECK_FUNCS($1)
- else
- GLIBCPP_CHECK_MATH_DECL_2(_$1)
- if test x$glibcpp_cv_func__$1_use = x"yes"; then
- AC_CHECK_FUNCS(_$1)
- fi
+AC_DEFUN([GLIBCXX_CHECK_WRITEV], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$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 to see if the (math function) argument passed is
-dnl declared when using the c++ compiler
-dnl ASSUMES argument is a math function with THREE parameters
+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
-dnl GLIBCPP_CHECK_MATH_DECL_3
-AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_3, [
- AC_MSG_CHECKING([for $1 declaration])
- if test x${glibcpp_cv_func_$1_use+set} != xset; then
- AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE([#include <math.h>],
- [ $1(0, 0, 0);],
- [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
- AC_LANG_RESTORE
+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_MSG_RESULT($glibcpp_cv_func_$1_use)
+
+ AC_LANG_RESTORE
])
+
dnl
-dnl Check to see if the (math function) argument passed is
-dnl 1) declared when using the c++ compiler
-dnl 2) has "C" linkage
-dnl
-dnl Define HAVE_CARGF etc if "cargf" is declared and links
-dnl
-dnl argument 1 is name of function to check
-dnl
-dnl ASSUMES argument is a math function with THREE parameters
+dnl Check whether LFS support is available.
dnl
-dnl GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3
-AC_DEFUN(GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3, [
- GLIBCPP_CHECK_MATH_DECL_3($1)
- if test x$glibcpp_cv_func_$1_use = x"yes"; then
- AC_CHECK_FUNCS($1)
- else
- GLIBCPP_CHECK_MATH_DECL_3(_$1)
- if test x$glibcpp_cv_func__$1_use = x"yes"; then
- AC_CHECK_FUNCS(_$1)
- fi
+AC_DEFUN([GLIBCXX_CHECK_LFS], [
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$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 to see if the (stdlib function) argument passed is
-dnl 1) declared when using the c++ compiler
-dnl 2) has "C" linkage
-dnl
-dnl argument 1 is name of function to check
+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 ASSUMES argument is a math function with TWO parameters
+dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING
+dnl --disable-fully-dynamic-string leaves _GLIBCXX_FULLY_DYNAMIC_STRING undefined
+dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)]
+dnl Where DEFAULT is either `yes' or `no'.
dnl
-dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2
-AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2, [
- AC_MSG_CHECKING([for $1 declaration])
- if test x${glibcpp_cv_func_$1_use+set} != xset; then
- AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE([#include <stdlib.h>],
- [ $1(0, 0);],
- [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
- AC_LANG_RESTORE
- ])
- fi
- AC_MSG_RESULT($glibcpp_cv_func_$1_use)
- if test x$glibcpp_cv_func_$1_use = x"yes"; then
- AC_CHECK_FUNCS($1)
+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
+ AC_DEFINE(_GLIBCXX_FULLY_DYNAMIC_STRING, 1,
+ [Define if a fully dynamic basic_string is wanted.])
fi
])
dnl
-dnl Check to see if the (stdlib function) argument passed is
-dnl 1) declared when using the c++ compiler
-dnl 2) has "C" linkage
+dnl Does any necessary configuration of the testsuite directory. Generates
+dnl the testsuite_hooks.h header.
dnl
-dnl argument 1 is name of function to check
+dnl GLIBCXX_ENABLE_SYMVERS and GLIBCXX_IS_NATIVE must be done before this.
dnl
-dnl ASSUMES argument is a function with THREE parameters
+dnl Sets:
+dnl enable_abi_check
+dnl GLIBCXX_TEST_WCHAR_T
+dnl GLIBCXX_TEST_THREAD
+dnl Substs:
+dnl baseline_dir
dnl
-dnl GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3
-AC_DEFUN(GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3, [
- AC_MSG_CHECKING([for $1 declaration])
- if test x${glibcpp_cv_func_$1_use+set} != xset; then
- AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE([#include <stdlib.h>],
- [ $1(0, 0, 0);],
- [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
- AC_LANG_RESTORE
- ])
+AC_DEFUN([GLIBCXX_CONFIGURE_TESTSUITE], [
+ if $GLIBCXX_IS_NATIVE ; then
+ # Do checks for resource limit functions.
+ GLIBCXX_CHECK_SETRLIMIT
+
+ # Look for setenv, so that extended locale tests can be performed.
+ GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
fi
- AC_MSG_RESULT($glibcpp_cv_func_$1_use)
- if test x$glibcpp_cv_func_$1_use = x"yes"; then
- AC_CHECK_FUNCS($1)
+
+ 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)
])
+
dnl
-dnl Check to see if the (unistd function) argument passed is
-dnl 1) declared when using the c++ compiler
-dnl 2) has "C" linkage
-dnl
-dnl argument 1 is name of function to check
+dnl Set up *_INCLUDES variables for all sundry Makefile.am's.
dnl
-dnl ASSUMES argument is a function with ONE parameter
+dnl Substs:
+dnl GLIBCXX_INCLUDES
+dnl TOPLEVEL_INCLUDES
dnl
-dnl GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1
-AC_DEFUN(GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1, [
- AC_MSG_CHECKING([for $1 declaration])
- if test x${glibcpp_cv_func_$1_use+set} != xset; then
- AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE([#include <unistd.h>],
- [ $1(0);],
- [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
- AC_LANG_RESTORE
- ])
- fi
- AC_MSG_RESULT($glibcpp_cv_func_$1_use)
- if test x$glibcpp_cv_func_$1_use = x"yes"; then
- AC_CHECK_FUNCS($1)
+AC_DEFUN([GLIBCXX_EXPORT_INCLUDES], [
+ # Used for every C++ compile we perform.
+ GLIBCXX_INCLUDES="\
+-I$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 gcc dir.
+ #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc -I$(toplevel_srcdir)/include'
+ TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc'
+
+ # 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 Because the builtins are picky picky picky about the arguments they take,
-dnl do an explict linkage tests here.
-dnl Check to see if the (math function) argument passed is
-dnl 1) declared when using the c++ compiler
-dnl 2) has "C" linkage
+dnl Substs:
+dnl OPTIMIZE_CXXFLAGS
+dnl WARN_FLAGS
dnl
-dnl Define HAVE_CARGF etc if "cargf" is declared and links
+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'
+ AC_SUBST(WARN_FLAGS)
+])
+
+
dnl
-dnl argument 1 is name of function to check
+dnl All installation directory information is determined here.
dnl
-dnl ASSUMES argument is a math function with ONE parameter
+dnl Substs:
+dnl gxx_install_dir
+dnl glibcxx_prefixdir
+dnl glibcxx_toolexecdir
+dnl glibcxx_toolexeclibdir
dnl
-dnl GLIBCPP_CHECK_BUILTIN_MATH_DECL_LINKAGE_1
-AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1, [
- AC_MSG_CHECKING([for $1 declaration])
- if test x${glibcpp_cv_func_$1_use+set} != xset; then
- AC_CACHE_VAL(glibcpp_cv_func_$1_use, [
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE([#include <math.h>],
- [ $1(0);],
- [glibcpp_cv_func_$1_use=yes], [glibcpp_cv_func_$1_use=no])
- AC_LANG_RESTORE
- ])
+dnl Assumes cross_compiling bits already done, and with_cross_host in
+dnl particular.
+dnl
+dnl This logic must match gcc/configure.ac's setting of gcc_gxx_include_dir.
+dnl config/gxx-include-dir.m4 must be kept consistant with this as well.
+AC_DEFUN([GLIBCXX_EXPORT_INSTALL_INFO], [
+ glibcxx_toolexecdir=no
+ glibcxx_toolexeclibdir=no
+ glibcxx_prefixdir=$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}/'"$gxx_include_dir"
+ fi
fi
- AC_MSG_RESULT($glibcpp_cv_func_$1_use)
- if test x$glibcpp_cv_func_$1_use = x"yes"; then
- AC_MSG_CHECKING([for $1 linkage])
- if test x${glibcpp_cv_func_$1_link+set} != xset; then
- AC_CACHE_VAL(glibcpp_cv_func_$1_link, [
- AC_TRY_LINK([#include <math.h>],
- [ $1(0);],
- [glibcpp_cv_func_$1_link=yes], [glibcpp_cv_func_$1_link=no])
- ])
+
+ # 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}/${gcc_version}/include/c++'
fi
- AC_MSG_RESULT($glibcpp_cv_func_$1_link)
- if test x$glibcpp_cv_func_$1_link = x"yes"; then
- ac_tr_func=HAVE_`echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
- AC_DEFINE_UNQUOTED(${ac_tr_func})
+ 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 Check to see what builtin math functions are supported
-dnl
-dnl check for __builtin_abs
-dnl check for __builtin_fabsf
-dnl check for __builtin_fabs
-dnl check for __builtin_fabl
-dnl check for __builtin_labs
-dnl check for __builtin_sqrtf
-dnl check for __builtin_sqrtl
-dnl check for __builtin_sqrt
-dnl check for __builtin_sinf
-dnl check for __builtin_sin
-dnl check for __builtin_sinl
-dnl check for __builtin_cosf
-dnl check for __builtin_cos
-dnl check for __builtin_cosl
-dnl
-dnl GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT
-AC_DEFUN(GLIBCPP_CHECK_BUILTIN_MATH_SUPPORT, [
- dnl Test for builtin math functions.
- dnl These are made in gcc/c-common.c
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_abs)
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsf)
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabs)
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_fabsl)
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_labs)
-
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtf)
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrt)
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sqrtl)
-
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinf)
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sin)
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_sinl)
-
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosf)
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cos)
- GLIBCPP_CHECK_BUILTIN_MATH_DECL_AND_LINKAGE_1(__builtin_cosl)
-
- dnl There is, without a doubt, a more elegant way to have these
- dnl names exported so that they won't be stripped out of acconfig.h by
- dnl autoheader. I leave this as an exercise to somebody less frustrated
- dnl than I.... please email the libstdc++ list if you can figure out a
- dnl more elegant approach (see autoconf/acgen.m4 and specifically
- dnl AC_CHECK_FUNC for things to steal.)
- dummyvar=no
- if test x$dummyvar = x"yes"; then
- AC_DEFINE(HAVE___BUILTIN_ABS)
- AC_DEFINE(HAVE___BUILTIN_LABS)
- AC_DEFINE(HAVE___BUILTIN_COS)
- AC_DEFINE(HAVE___BUILTIN_COSF)
- AC_DEFINE(HAVE___BUILTIN_COSL)
- AC_DEFINE(HAVE___BUILTIN_FABS)
- AC_DEFINE(HAVE___BUILTIN_FABSF)
- AC_DEFINE(HAVE___BUILTIN_FABSL)
- AC_DEFINE(HAVE___BUILTIN_SIN)
- AC_DEFINE(HAVE___BUILTIN_SINF)
- AC_DEFINE(HAVE___BUILTIN_SINL)
- AC_DEFINE(HAVE___BUILTIN_SQRT)
- AC_DEFINE(HAVE___BUILTIN_SQRTF)
- AC_DEFINE(HAVE___BUILTIN_SQRTL)
- fi
+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 docs/html/17_intro/configury.html#enable for 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,_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],-,_)[=][$2])
+m4_undefine([_g_switch])dnl
+m4_undefine([_g_help])dnl
])
dnl
-dnl Check to see what the underlying c library is like
-dnl These checks need to do two things:
-dnl 1) make sure the name is declared when using the c++ compiler
-dnl 2) make sure the name has "C" linkage
-dnl This might seem like overkill but experience has shown that it's not...
+dnl Check for ISO/IEC 9899:1999 "C99" support.
dnl
-dnl Define HAVE_STRTOLD if "strtold" is declared and links
-dnl Define HAVE_STRTOF if "strtof" is declared and links
-dnl Define HAVE_DRAND48 if "drand48" is declared and links
+dnl --enable-c99 defines _GLIBCXX_USE_C99
+dnl --disable-c99 leaves _GLIBCXX_USE_C99 undefined
+dnl + Usage: GLIBCXX_ENABLE_C99[(DEFAULT)]
+dnl Where DEFAULT is either `yes' or `no'.
+dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
dnl
-dnl GLIBCPP_CHECK_STDLIB_SUPPORT
-AC_DEFUN(GLIBCPP_CHECK_STDLIB_SUPPORT, [
- ac_test_CXXFLAGS="${CXXFLAGS+set}"
- ac_save_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
+AC_DEFUN([GLIBCXX_ENABLE_C99], [
+ GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support])
- GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtold)
- GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_2(strtof)
- AC_CHECK_FUNCS(drand48)
+ if test x"$enable_c99" = x"yes"; then
- CXXFLAGS="$ac_save_CXXFLAGS"
-])
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
-dnl
-dnl Check to see what the underlying c library is like
-dnl These checks need to do two things:
-dnl 1) make sure the name is declared when using the c++ compiler
-dnl 2) make sure the name has "C" linkage
-dnl This might seem like overkill but experience has shown that it's not...
-dnl
-dnl Define HAVE_ISATTY if "isatty" is declared and links
-dnl
-dnl GLIBCPP_CHECK_UNISTD_SUPPORT
-AC_DEFUN(GLIBCPP_CHECK_UNISTD_SUPPORT, [
- ac_test_CXXFLAGS="${CXXFLAGS+set}"
+ # Use -std=c++98 because the default (-std=gnu++98) leaves __STRICT_ANSI__
+ # undefined and fake C99 facilities - like pre-standard snprintf - may be
+ # spuriously enabled.
+ # Long term, -std=c++0x could be even better, could manage to explicitely
+ # request C99 facilities to the underlying C headers.
ac_save_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
+ CXXFLAGS="$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="$LIBS -lm"
+ ], [
+ # Use the default compile-only tests in GCC_TRY_COMPILE_OR_LINK
+ gcc_no_link=yes
+ ])
+ fi
- GLIBCPP_CHECK_UNISTD_DECL_AND_LINKAGE_1(isatty)
-
- CXXFLAGS="$ac_save_CXXFLAGS"
-])
+ # Check for the existence of <math.h> functions used if C99 is enabled.
+ AC_MSG_CHECKING([for ISO C99 support in <math.h>])
+ AC_CACHE_VAL(glibcxx_cv_c99_math, [
+ 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=yes], [glibcxx_cv_c99_math=no])
+ ])
+ AC_MSG_RESULT($glibcxx_cv_c99_math)
+ if test x"$glibcxx_cv_c99_math" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_C99_MATH, 1,
+ [Define if C99 functions or macros in <math.h> should be imported
+ in <cmath> in namespace std.])
+ fi
-dnl
-dnl Check to see what the underlying c library or math library is like.
-dnl These checks need to do two things:
-dnl 1) make sure the name is declared when using the c++ compiler
-dnl 2) make sure the name has "C" linkage
-dnl This might seem like overkill but experience has shown that it's not...
-dnl
-dnl Define HAVE_CARGF etc if "cargf" is found.
-dnl
-dnl GLIBCPP_CHECK_MATH_SUPPORT
-AC_DEFUN(GLIBCPP_CHECK_MATH_SUPPORT, [
- ac_test_CXXFLAGS="${CXXFLAGS+set}"
- ac_save_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS='-fno-builtins -D_GNU_SOURCE'
+ # 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)
+ glibcxx_cv_c99_complex=no;
+ if test x"$ac_has_complex_h" = x"yes"; then
+ AC_MSG_CHECKING([for ISO C99 support in <complex.h>])
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <complex.h>
+ typedef __complex__ float float_type;
+ typedef __complex__ double double_type;
+ typedef __complex__ long double ld_type;
+ volatile float_type tmpf;
+ volatile double_type tmpd;
+ volatile ld_type tmpld;
+ volatile float f;
+ volatile double d;
+ volatile long double ld;],
+ [f = cabsf(tmpf);
+ f = cargf(tmpf);
+ tmpf = ccosf(tmpf);
+ tmpf = ccoshf(tmpf);
+ tmpf = cexpf(tmpf);
+ tmpf = clogf(tmpf);
+ tmpf = csinf(tmpf);
+ tmpf = csinhf(tmpf);
+ tmpf = csqrtf(tmpf);
+ tmpf = ctanf(tmpf);
+ tmpf = ctanhf(tmpf);
+ tmpf = cpowf(tmpf, tmpf);
+ tmpf = cprojf(tmpf);
+ d = cabs(tmpd);
+ d = carg(tmpd);
+ tmpd = ccos(tmpd);
+ tmpd = ccosh(tmpd);
+ tmpd = cexp(tmpd);
+ tmpd = clog(tmpd);
+ tmpd = csin(tmpd);
+ tmpd = csinh(tmpd);
+ tmpd = csqrt(tmpd);
+ tmpd = ctan(tmpd);
+ tmpd = ctanh(tmpd);
+ tmpd = cpow(tmpd, tmpd);
+ tmpd = cproj(tmpd);
+ ld = cabsl(tmpld);
+ ld = cargl(tmpld);
+ tmpld = ccosl(tmpld);
+ tmpld = ccoshl(tmpld);
+ tmpld = cexpl(tmpld);
+ tmpld = clogl(tmpld);
+ tmpld = csinl(tmpld);
+ tmpld = csinhl(tmpld);
+ tmpld = csqrtl(tmpld);
+ tmpld = ctanl(tmpld);
+ tmpld = ctanhl(tmpld);
+ tmpld = cpowl(tmpld, tmpld);
+ tmpld = cprojl(tmpld);
+ ],[glibcxx_cv_c99_complex=yes], [glibcxx_cv_c99_complex=no])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_c99_complex)
+ if test x"$glibcxx_cv_c99_complex" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_C99_COMPLEX, 1,
+ [Define if C99 functions in <complex.h> should be used in
+ <complex>. Using compiler builtins for these functions requires
+ corresponding C99 library functions to be present.])
+ fi
- dnl Check libm
- AC_CHECK_LIB(m, sin, libm="-lm")
- ac_save_LIBS="$LIBS"
- LIBS="$LIBS $libm"
-
- dnl Check to see if certain C math functions exist.
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnan)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finite)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysign)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincos)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fpclass)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(qfpclass)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypot)
-
- dnl Check to see if basic C math functions have float versions.
- GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float trig,
- float_trig,
- acosf asinf atanf \
- cosf sinf tanf \
- coshf sinhf tanhf)
- GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(float round,
- float_round,
- ceilf floorf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinff)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2f)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10f)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modff)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosf)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitef)
-
- dnl Check to see if basic C math functions have long double versions.
- GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double trig,
- long_double_trig,
- acosl asinl atanl \
- cosl sinl tanl \
- coshl sinhl tanhl)
- GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(long double round,
- long_double_round,
- ceill floorl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isnanl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(isinfl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(copysignl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(atan2l)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(expl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(fabsl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(fmodl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(frexpl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(hypotl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(ldexpl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(logl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(log10l)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(modfl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_2(powl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(sqrtl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_3(sincosl)
- GLIBCPP_CHECK_MATH_DECL_AND_LINKAGE_1(finitel)
-
- dnl Some runtimes have these functions with a preceding underscore. Please
- dnl keep this sync'd with the one above. And if you add any new symbol,
- dnl please add the corresponding block in the @BOTTOM@ section of acconfig.h.
- dnl Check to see if certain C math functions exist.
-
- dnl Check to see if basic C math functions have float versions.
- GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float trig,
- _float_trig,
- _acosf _asinf _atanf \
- _cosf _sinf _tanf \
- _coshf _sinhf _tanhf)
- GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_float round,
- _float_round,
- _ceilf _floorf)
-
- dnl Check to see if basic C math functions have long double versions.
- GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double trig,
- _long_double_trig,
- _acosl _asinl _atanl \
- _cosl _sinl _tanl \
- _coshl _sinhl _tanhl)
- GLIBCPP_CHECK_MATH_DECLS_AND_LINKAGES_1(_long double round,
- _long_double_round,
- _ceill _floorl)
+ # Check for the existence in <stdio.h> of vscanf, et. al.
+ AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
+ AC_CACHE_VAL(glibcxx_cv_c99_stdio, [
+ 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("12", 0, "%i");],
+ [glibcxx_cv_c99_stdio=yes], [glibcxx_cv_c99_stdio=no])
+ ])
+ AC_MSG_RESULT($glibcxx_cv_c99_stdio)
+
+ # Check for the existence in <stdlib.h> of lldiv_t, et. al.
+ AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
+ AC_CACHE_VAL(glibcxx_cv_c99_stdlib, [
+ 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=yes], [glibcxx_cv_c99_stdlib=no])
+ ])
+ AC_MSG_RESULT($glibcxx_cv_c99_stdlib)
+
+ # Check for the existence in <wchar.h> of wcstold, etc.
+ glibcxx_cv_c99_wchar=no;
+ if test x"$ac_has_wchar_h" = xyes &&
+ test x"$ac_has_wctype_h" = xyes; then
+ AC_MSG_CHECKING([for ISO C99 support in <wchar.h>])
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test
+ {
+ using ::wcstold;
+ using ::wcstoll;
+ using ::wcstoull;
+ }
+ ],[],[glibcxx_cv_c99_wchar=yes], [glibcxx_cv_c99_wchar=no])
+
+ # Checks for wide character functions that may not be present.
+ # Injection of these is wrapped with guard macros.
+ # NB: only put functions here, instead of immediately above, if
+ # absolutely necessary.
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::vfwscanf; } ], [],
+ [AC_DEFINE(HAVE_VFWSCANF,1,
+ [Defined if vfwscanf exists.])],[])
+
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::vswscanf; } ], [],
+ [AC_DEFINE(HAVE_VSWSCANF,1,
+ [Defined if vswscanf exists.])],[])
+
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::vwscanf; } ], [],
+ [AC_DEFINE(HAVE_VWSCANF,1,[Defined if vwscanf exists.])],[])
+
+ AC_TRY_COMPILE([#include <wchar.h>
+ namespace test { using ::wcstof; } ], [],
+ [AC_DEFINE(HAVE_WCSTOF,1,[Defined if wcstof exists.])],[])
+
+ AC_TRY_COMPILE([#include <wctype.h>],
+ [ wint_t t; int i = iswblank(t);],
+ [AC_DEFINE(HAVE_ISWBLANK,1,
+ [Defined if iswblank exists.])],[])
+
+ AC_MSG_RESULT($glibcxx_cv_c99_wchar)
+ fi
+
+ # Option parsed, now set things appropriately.
+ if test x"$glibcxx_cv_c99_math" = x"no" ||
+ test x"$glibcxx_cv_c99_complex" = x"no" ||
+ test x"$glibcxx_cv_c99_stdio" = x"no" ||
+ test x"$glibcxx_cv_c99_stdlib" = x"no" ||
+ test x"$glibcxx_cv_c99_wchar" = x"no"; then
+ enable_c99=no;
+ else
+ AC_DEFINE(_GLIBCXX_USE_C99, 1,
+ [Define if C99 functions or macros from <wchar.h>, <math.h>,
+ <complex.h>, <stdio.h>, and <stdlib.h> can be used or exposed.])
+ fi
+ gcc_no_link="$ac_save_gcc_no_link"
LIBS="$ac_save_LIBS"
CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+ fi
+
+ AC_MSG_CHECKING([for fully enabled ISO C99 support])
+ AC_MSG_RESULT($enable_c99)
])
dnl
-dnl Check to see if there is native support for complex
-dnl
-dnl Don't compile bits in math/* if native support exits.
+dnl Check for clock_gettime, nanosleep and sched_yield, used in the
+dnl implementation of 20.8.5 [time.clock], and 30.2.2 [thread.thread.this]
+dnl in the current C++0x working draft.
dnl
-dnl Define USE_COMPLEX_LONG_DOUBLE etc if "copysignl" is found.
+dnl --enable-libstdcxx-time
+dnl --enable-libstdcxx-time=yes
+dnl checks for the availability of monotonic and realtime clocks,
+dnl nanosleep and sched_yield in libc and libposix4 and, in case, links
+dnl the latter
+dnl --enable-libstdcxx-time=rt
+dnl also searches (and, in case, links) librt. Note that this is
+dnl not always desirable because, in glibc, for example, in turn it
+dnl triggers the linking of libpthread too, which activates locking,
+dnl a large overhead for single-thread programs.
+dnl --enable-libstdcxx-time=no
+dnl --disable-libstdcxx-time
+dnl disables the checks completely
dnl
-dnl GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT
-AC_DEFUN(GLIBCPP_CHECK_COMPLEX_MATH_SUPPORT, [
- dnl Check for complex versions of math functions of platform.
- AC_CHECK_LIB(m, main)
- AC_REPLACE_MATHFUNCS(nan copysignf)
+AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [
- dnl For __signbit to signbit conversions.
- AC_CHECK_FUNCS([__signbit], , [LIBMATHOBJS="$LIBMATHOBJS signbit.lo"])
- AC_CHECK_FUNCS([__signbitf], , [LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"])
+ AC_MSG_CHECKING([for clock_gettime, nanosleep and sched_yield])
+ GLIBCXX_ENABLE(libstdcxx-time,$1,[=KIND],
+ [use KIND for check type],
+ [permit yes|no|rt])
- dnl Compile the long double complex functions only if the function
- dnl provides the non-complex long double functions that are needed.
- dnl Currently this includes copysignl, which should be
- dnl cached from the GLIBCPP_CHECK_MATH_SUPPORT macro, above.
- if test x$ac_cv_func_copysignl = x"yes"; then
- AC_CHECK_FUNCS([__signbitl], , [LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"])
- fi
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-exceptions"
+ ac_save_LIBS="$LIBS"
- AC_SUBST(LIBMATHOBJS)
-])
+ ac_has_clock_monotonic=no;
+ ac_has_clock_realtime=no;
+ if test x"$enable_libstdcxx_time" != x"no"; then
-dnl Check to see what architecture and operating system we are compiling
-dnl for. Also, if architecture- or OS-specific flags are required for
-dnl compilation, pick them up here.
-dnl
-dnl GLIBCPP_CHECK_TARGET
-AC_DEFUN(GLIBCPP_CHECK_TARGET, [
- . [$]{glibcpp_basedir}/configure.target
- AC_MSG_RESULT(CPU config directory is $cpu_include_dir)
- AC_MSG_RESULT(OS config directory is $os_include_dir)
-])
+ if test x"$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 $ac_cv_search_nanosleep"
+ ;;
+ esac
-dnl
-dnl Check to see if this target can enable the wchar_t parts of libstdc++.
-dnl If --disable-c-mbchar was given, no wchar_t stuff is enabled. (This
-dnl must have been previously checked.)
-dnl
-dnl Define _GLIBCPP_USE_WCHAR_T if all the bits are found
-dnl Define HAVE_MBSTATE_T if mbstate_t is not in wchar.h
-dnl
-dnl GLIBCPP_CHECK_WCHAR_T_SUPPORT
-AC_DEFUN(GLIBCPP_CHECK_WCHAR_T_SUPPORT, [
+ AC_SEARCH_LIBS(sched_yield, [rt posix4])
- dnl Test wchar.h for mbstate_t, which is needed for char_traits and
- dnl others even if wchar_t support is not on.
- AC_MSG_CHECKING([for mbstate_t])
- AC_TRY_COMPILE([#include <wchar.h>],
- [mbstate_t teststate;],
- have_mbstate_t=yes, have_mbstate_t=no)
- AC_MSG_RESULT($have_mbstate_t)
- if test x"$have_mbstate_t" = xyes; then
- AC_DEFINE(HAVE_MBSTATE_T)
- fi
+ case "$ac_cv_search_sched_yield" in
+ -lposix4*)
+ GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
+ AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
+ [ Defined if sched_yield is available. ])
+ ;;
+ -lrt*)
+ if test x"$enable_libstdcxx_time" = x"rt"; then
+ GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
+ AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
+ [ Defined if sched_yield is available. ])
+ fi
+ ;;
+ *)
+ AC_DEFINE(_GLIBCXX_USE_SCHED_YIELD, 1,
+ [ Defined if sched_yield is available. ])
+ ;;
+ esac
- dnl Sanity check for existence of ISO C99 headers for extended encoding.
- AC_CHECK_HEADERS(wchar.h, ac_has_wchar_h=yes, ac_has_wchar_h=no)
- AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
-
- dnl Only continue checking if the ISO C99 headers exist and support is on.
- if test x"$ac_has_wchar_h" = xyes &&
- test x"$ac_has_wctype_h" = xyes &&
- test x"$enable_c_mbchar" != xno; then
-
- dnl Test wchar.h for WCHAR_MIN, WCHAR_MAX, which is needed before
- dnl numeric_limits can instantiate type_traits<wchar_t>
- AC_MSG_CHECKING([for WCHAR_MIN and WCHAR_MAX])
- AC_TRY_COMPILE([#include <wchar.h>],
- [int i = WCHAR_MIN; int j = WCHAR_MAX;],
- has_wchar_minmax=yes, has_wchar_minmax=no)
- AC_MSG_RESULT($has_wchar_minmax)
+ AC_CHECK_HEADERS(unistd.h, ac_has_unistd_h=yes, ac_has_unistd_h=no)
+
+ if test x"$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($ac_has_clock_monotonic)
- dnl Test wchar.h for WEOF, which is what we use to determine whether
- dnl to specialize for char_traits<wchar_t> or not.
- AC_MSG_CHECKING([for WEOF])
- AC_TRY_COMPILE([
- #include <wchar.h>
- #include <stddef.h>],
- [wint_t i = WEOF;],
- has_weof=yes, has_weof=no)
- AC_MSG_RESULT($has_weof)
+ 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"$ac_has_clock_monotonic" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_CLOCK_MONOTONIC, 1,
+ [ Defined if clock_gettime has monotonic clock support. ])
+ fi
+
+ if test x"$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"$ac_has_nanosleep" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_NANOSLEEP, 1,
+ [ Defined if nanosleep is available. ])
+ fi
+
+ AC_SUBST(GLIBCXX_LIBS)
+
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ LIBS="$ac_save_LIBS"
+ AC_LANG_RESTORE
+])
+
+dnl
+dnl Check for gettimeofday, used in the implementation of 20.8.5
+dnl [time.clock] in the current C++0x working draft.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [
- dnl Tests for wide character functions used in char_traits<wchar_t>.
- ac_wfuncs=yes
- AC_CHECK_FUNCS(wcslen wmemchr wmemcmp wmemcpy wmemmove wmemset,, \
- ac_wfuncs=no)
+ AC_MSG_CHECKING([for gettimeofday])
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-exceptions"
- dnl Checks for names injected into std:: by the c_std headers.
- AC_CHECK_FUNCS(btowc wctob fgetwc fgetwc fgetws fputwc fputws fwide \
- fwprintf fwscanf swprintf swscanf vfwprintf vfwscanf vswprintf vswscanf \
- vwprintf vwscanf wprintf wscanf getwc getwchar mbsinit mbrlen mbrtowc \
- mbsrtowcs wcsrtombs putwc putwchar ungetwc wcrtomb wcstod wcstof wcstol \
- wcstoul wcscpy wcsncpy wcscat wcsncat wcscmp wcscoll wcsncmp wcsxfrm \
- wcscspn wcsspn wcstok wcsftime wcschr wcspbrk wcsrchr wcsstr,, \
- ac_wfuncs=no)
-
- AC_MSG_CHECKING([for ISO C99 wchar_t support])
- if test x"$has_weof" = xyes &&
- test x"$has_wchar_minmax" = xyes &&
- test x"$ac_wfuncs" = xyes; then
- ac_isoC99_wchar_t=yes
- else
- ac_isoC99_wchar_t=no
- fi
- AC_MSG_RESULT($ac_isoC99_wchar_t)
+ ac_has_gettimeofday=no;
+ AC_CHECK_HEADERS(sys/time.h, ac_has_sys_time_h=yes, ac_has_sys_time_h=no)
+ if test x"$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($ac_has_gettimeofday)
+ fi
- dnl Use iconv for wchar_t to char conversions. As such, check for
- dnl X/Open Portability Guide, version 2 features (XPG2).
- AC_CHECK_HEADER(iconv.h, ac_has_iconv_h=yes, ac_has_iconv_h=no)
- AC_CHECK_HEADER(langinfo.h, ac_has_langinfo_h=yes, ac_has_langinfo_h=no)
-
- dnl Check for existence of libiconv.a providing XPG2 wchar_t support.
- AC_CHECK_LIB(iconv, iconv, libiconv="-liconv")
- ac_save_LIBS="$LIBS"
- LIBS="$LIBS $libiconv"
-
- AC_CHECK_FUNCS(iconv_open iconv_close iconv nl_langinfo, \
- ac_XPG2funcs=yes, ac_XPG2funcs=no)
+ if test x"$ac_has_gettimeofday" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_GETTIMEOFDAY, 1,
+ [ Defined if gettimeofday is available. ])
+ fi
- LIBS="$ac_save_LIBS"
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+])
- AC_MSG_CHECKING([for XPG2 wchar_t support])
- if test x"$ac_has_iconv_h" = xyes &&
- test x"$ac_has_langinfo_h" = xyes &&
- test x"$ac_XPG2funcs" = xyes; then
- ac_XPG2_wchar_t=yes
- else
- ac_XPG2_wchar_t=no
- fi
- AC_MSG_RESULT($ac_XPG2_wchar_t)
-
- dnl At the moment, only enable wchar_t specializations if all the
- dnl above support is present.
- AC_MSG_CHECKING([for enabled wchar_t specializations])
- if test x"$ac_isoC99_wchar_t" = xyes &&
- test x"$ac_XPG2_wchar_t" = xyes; then
- AC_DEFINE(_GLIBCPP_USE_WCHAR_T)
- AC_MSG_RESULT("yes")
+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);
+ llrint(0.0);
+ llrintf(0.0f);
+ llrintl(0.0l);
+ llround(0.0);
+ llroundf(0.0f);
+ llroundl(0.0l);
+ 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.])
+ 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"$ac_c99_inttypes_tr1" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_C99_INTTYPES_TR1, 1,
+ [Define if C99 functions in <inttypes.h> should be imported in
+ <tr1/cinttypes> in namespace std::tr1.])
+ fi
+
+ # Check for the existence of whcar_t <inttypes.h> functions (NB: doesn't
+ # make sense if the glibcxx_cv_c99_stdint_tr1 check fails, per C99, 7.8/1).
+ ac_c99_inttypes_wchar_t_tr1=no;
+ if test x"$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)
+
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+])
+
+dnl
+dnl Check whether "/dev/random" and "/dev/urandom" are available for the
+dnl random_device of "TR1" (Chapter 5.1, "Random number generation").
+dnl
+AC_DEFUN([GLIBCXX_CHECK_RANDOM_TR1], [
+
+ AC_MSG_CHECKING([for "/dev/random" and "/dev/urandom" for TR1 random_device])
+ AC_CACHE_VAL(glibcxx_cv_random_tr1, [
+ if test -r /dev/random && test -r /dev/urandom; then
+ glibcxx_cv_random_tr1=yes;
else
- AC_MSG_RESULT("no")
+ glibcxx_cv_random_tr1=no;
fi
- else
- dnl Wide characters disabled by the user.
- AC_MSG_WARN([wchar_t support disabled.])
+ ])
+ AC_MSG_RESULT($glibcxx_cv_random_tr1)
+
+ if test x"$glibcxx_cv_random_tr1" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1,
+ [Define if /dev/random and /dev/urandom are available for
+ the random_device of TR1 (Chapter 5.1).])
fi
-])
+])
dnl
-dnl Check for special debugging mode; not for production use.
-dnl
-dnl GLIBCPP_ENABLE_DEBUG
-dnl --enable-debug sets '-ggdb3 -O0'.
-dnl --disable-debug sets '-g' and whatever optimization options the
-dnl compiler can handle.
-dnl + --enable-maintainer-mode automatically defaults this to on.
-dnl + Perhaps -D/-U of NDEBUG, DEBUG, DEBUG_ASSERT, ...?
-dnl + Usage: GLIBCPP_ENABLE_DEBUG[(DEFAULT)]
-dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
-dnl defaults to `no'.
-AC_DEFUN(GLIBCPP_ENABLE_DEBUG, [dnl
-define([GLIBCPP_ENABLE_DEBUG_DEFAULT], ifelse($1, yes, yes, no))dnl
-AC_ARG_ENABLE(debug,
-changequote(<<, >>)dnl
-<< --enable-debug extra debugging, turn off optimization [default=>>GLIBCPP_ENABLE_DEBUG_DEFAULT],
-changequote([, ])dnl
-[case "${enableval}" in
- yes) enable_debug=yes ;;
- no) enable_debug=no ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable extra debugging]) ;;
- esac],
-enable_debug=GLIBCPP_ENABLE_DEBUG_DEFAULT)dnl
-
-dnl Option parsed, now set things appropriately
-case "${enable_debug}" in
- yes)
- DEBUG_FLAGS='-O0 -ggdb3'
- ;;
- no)
- DEBUG_FLAGS='-g'
- ;;
-esac
-AC_SUBST(DEBUG_FLAGS)
-])
+dnl Check whether EOF, SEEK_CUR, and SEEK_END have the most common values:
+dnl in that case including <cstdio> in some C++ headers can be avoided.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_STDIO_MACROS], [
+
+ AC_MSG_CHECKING([for EOF == -1, SEEK_CUR == 1, SEEK_END == 2])
+ AC_CACHE_VAL(glibcxx_cv_stdio_macros, [
+ AC_TRY_COMPILE([#include <stdio.h>],
+ [#if ((EOF != -1) || (SEEK_CUR != 1) || (SEEK_END != 2))
+ unusual values...
+ #endif
+ ], [glibcxx_cv_stdio_macros=yes],
+ [glibcxx_cv_stdio_macros=no])
+ ])
+ AC_MSG_RESULT($glibcxx_cv_stdio_macros)
+ if test x"$glibcxx_cv_stdio_macros" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_STDIO_MACROS, 1,
+ [Define if EOF == -1, SEEK_CUR == 1, SEEK_END == 2.])
+ fi
+])
dnl
-dnl Check for "unusual" flags to pass to the compiler while building.
+dnl Check whether macros, etc are present for <system_error>
dnl
-dnl GLIBCPP_ENABLE_CXX_FLAGS
-dnl --enable-cxx-flags='-foo -bar -baz' is a general method for passing
-dnl experimental flags such as -fhonor-std, -fsquangle, -Dfloat=char, etc.
-dnl Somehow this same set of flags must be passed when [re]building
-dnl libgcc.
-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: GLIBCPP_ENABLE_CXX_FLAGS(default flags)
-dnl If "default flags" is an empty string (or "none"), the effect is
-dnl the same as --disable or --enable=no.
-AC_DEFUN(GLIBCPP_ENABLE_CXX_FLAGS, [dnl
-define([GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT], ifelse($1,,, $1))dnl
-AC_ARG_ENABLE(cxx-flags,
-changequote(<<, >>)dnl
-<< --enable-cxx-flags=FLAGS pass compiler FLAGS when building library;
- [default=>>GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT],
-changequote([, ])dnl
-[case "x$enableval" in
- xyes)
- AC_MSG_ERROR([--enable-cxx-flags needs compiler flags as arguments]) ;;
- xno|x)
- enable_cxx_flags='' ;;
- *)
- enable_cxx_flags="$enableval" ;;
- esac],
-enable_cxx_flags='GLIBCPP_ENABLE_CXX_FLAGS_DEFAULT')
-
-dnl Thinko on my part during design. This kludge is the workaround.
-if test "$enable_cxx_flags" = "none"; then
- enable_cxx_flags='';
-fi
+AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [
-dnl Run through flags (either default or command-line) and set anything
-dnl 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
+m4_pushdef([n_syserr], [1])dnl
+m4_foreach([syserr], [EOWNERDEAD, ENOTRECOVERABLE, ENOLINK, EPROTO, ENODATA,
+ ENOSR, ENOSTR, ETIME, EBADMSG, ECANCELED,
+ EOVERFLOW, ENOTSUP, EIDRM, ETXTBSY],
+[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
-EXTRA_CXX_FLAGS="$enable_cxx_flags"
-AC_SUBST(EXTRA_CXX_FLAGS)
+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
+
+ if test $enable_cheaders = c_global || test $enable_cheaders = c_std; then
+ c_extra=yes
+ fi
+
+ AC_SUBST(C_INCLUDE_DIR)
+ GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C, test $enable_cheaders = c)
+ GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_STD, test $enable_cheaders = c_std)
+ GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_C_GLOBAL, test $enable_cheaders = c_global)
+ GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_COMPATIBILITY, test $c_compatibility = yes)
+ GLIBCXX_CONDITIONAL(GLIBCXX_C_HEADERS_EXTRA, test $c_extra = yes)
])
dnl
-dnl Check for which locale library to use: gnu or generic.
+dnl Check for which locale library to use. The choice is mapped to
+dnl a subdirectory of config/locale.
dnl
-dnl GLIBCPP_ENABLE_CLOCALE
-dnl --enable-clocale=gnu sets config/locale/c_locale_gnu.cc and friends
-dnl --enable-clocale=generic sets config/locale/c_locale_generic.cc and friends
-dnl
-dnl default is generic
+dnl Default is generic.
dnl
-AC_DEFUN(GLIBCPP_ENABLE_CLOCALE, [
- AC_MSG_CHECKING([for clocale to use])
- AC_ARG_ENABLE(clocale,
- [ --enable-clocale enable model for target locale package.
- --enable-clocale=MODEL use MODEL target-speific locale package. [default=generic]
- ],
- if test x$enable_clocale = xno; then
- enable_clocale=no
- fi,
- enable_clocale=no)
+AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [
+ GLIBCXX_ENABLE(clocale,auto,[@<:@=MODEL@:>@],
+ [use MODEL for target locale package],
+ [permit generic|gnu|ieee_1003.1-2001|yes|no|auto])
+ # Deal with gettext issues. Default to not using it (=no) until we detect
+ # support for it later. Let the user turn it off via --e/d, but let that
+ # default to on for easier handling.
+ USE_NLS=no
+ AC_ARG_ENABLE(nls,
+ AC_HELP_STRING([--enable-nls],[use Native Language Support (default)]),
+ [],
+ [enable_nls=yes])
+
+ # Either a known packaage, or "auto"
+ if test $enable_clocale = no || test $enable_clocale = yes; then
+ enable_clocale=auto
+ fi
enable_clocale_flag=$enable_clocale
- dnl Probe for locale support if no specific model is specified.
- dnl Default to "generic"
- if test x$enable_clocale_flag = xno; then
- case x${target_os} in
- xlinux* | xgnu*)
- AC_EGREP_CPP([_GLIBCPP_ok], [
- #include <features.h>
- #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
- _GLIBCPP_ok
- #endif
- ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
-
- # Test for bugs early in glibc-2.2.x series
- if test x$enable_clocale_flag = xgnu; then
- AC_TRY_RUN([
- #define _GNU_SOURCE 1
- #include <locale.h>
- #include <string.h>
- #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
- extern __typeof(newlocale) __newlocale;
- extern __typeof(duplocale) __duplocale;
- extern __typeof(strcoll_l) __strcoll_l;
- #endif
- int main()
- {
- const char __one[] = "Äuglein Augmen";
- const char __two[] = "Äuglein";
- int i;
- int j;
- __locale_t loc;
- __locale_t loc_dup;
- loc = __newlocale(1 << LC_ALL, "de_DE", 0);
- loc_dup = __duplocale(loc);
- i = __strcoll_l(__one, __two, loc);
- j = __strcoll_l(__one, __two, loc_dup);
- return 0;
- }
- ],
- [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
- [enable_clocale_flag=generic])
- fi
-
- # ... at some point put __strxfrm_l tests in as well.
+ # 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
;;
- *)
- enable_clocale_flag=generic
+ darwin* | freebsd*)
+ enable_clocale_flag=darwin
;;
+ *)
+ enable_clocale_flag=generic
+ ;;
esac
fi
- dnl Deal with gettext issues.
- AC_ARG_ENABLE(nls,
- [ --enable-nls use Native Language Support (default)],
- , enable_nls=yes)
- USE_NLS=no
+ # 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__ >= 2)
+ _GLIBCXX_ok
+ #endif
+ ], enable_clocale_flag=gnu, enable_clocale_flag=generic)
+
+ if test $enable_clocale = auto; then
+ # Test for bugs early in glibc-2.2.x series
+ AC_TRY_RUN([
+ #define _GNU_SOURCE 1
+ #include <locale.h>
+ #include <string.h>
+ #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2)
+ extern __typeof(newlocale) __newlocale;
+ extern __typeof(duplocale) __duplocale;
+ extern __typeof(strcoll_l) __strcoll_l;
+ #endif
+ int main()
+ {
+ const char __one[] = "Äuglein Augmen";
+ const char __two[] = "Äuglein";
+ int i;
+ int j;
+ __locale_t loc;
+ __locale_t loc_dup;
+ loc = __newlocale(1 << LC_ALL, "de_DE", 0);
+ loc_dup = __duplocale(loc);
+ i = __strcoll_l(__one, __two, loc);
+ j = __strcoll_l(__one, __two, loc_dup);
+ return 0;
+ }
+ ],
+ [enable_clocale_flag=gnu],[enable_clocale_flag=generic],
+ [enable_clocale_flag=generic])
+ fi
+
+ # Set it to scream when it hurts.
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS="-Wimplicit-function-declaration -Werror"
+
+ # Use strxfrm_l if available.
+ AC_TRY_COMPILE([#define _GNU_SOURCE 1
+ #include <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="$ac_save_CFLAGS"
+ fi
- dnl Set configure bits for specified locale package
- case x${enable_clocale_flag} in
- xgeneric)
+ # 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 ${enable_clocale_flag} in
+ generic)
AC_MSG_RESULT(generic)
CLOCALE_H=config/locale/generic/c_locale.h
CLOCALE_CC=config/locale/generic/c_locale.cc
- CCODECVT_H=config/locale/generic/codecvt_specializations.h
CCODECVT_CC=config/locale/generic/codecvt_members.cc
CCOLLATE_CC=config/locale/generic/collate_members.cc
CCTYPE_CC=config/locale/generic/ctype_members.cc
CTIME_CC=config/locale/generic/time_members.cc
CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
;;
- xgnu)
+ darwin)
+ AC_MSG_RESULT(darwin or freebsd)
+
+ CLOCALE_H=config/locale/generic/c_locale.h
+ CLOCALE_CC=config/locale/generic/c_locale.cc
+ CCODECVT_CC=config/locale/generic/codecvt_members.cc
+ CCOLLATE_CC=config/locale/generic/collate_members.cc
+ CCTYPE_CC=config/locale/darwin/ctype_members.cc
+ CMESSAGES_H=config/locale/generic/messages_members.h
+ CMESSAGES_CC=config/locale/generic/messages_members.cc
+ CMONEY_CC=config/locale/generic/monetary_members.cc
+ CNUMERIC_CC=config/locale/generic/numeric_members.cc
+ CTIME_H=config/locale/generic/time_members.h
+ CTIME_CC=config/locale/generic/time_members.cc
+ CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
+ ;;
+
+ gnu)
AC_MSG_RESULT(gnu)
# Declare intention to use gettext, and add support for specific
# Don't call AM-GNU-GETTEXT here. Instead, assume glibc.
AC_CHECK_PROG(check_msgfmt, msgfmt, yes, no)
if test x"$check_msgfmt" = x"yes" && test x"$enable_nls" = x"yes"; then
- USE_NLS=yes
+ USE_NLS=yes
fi
# Export the build objects.
for ling in $ALL_LINGUAS; do \
- glibcpp_MOFILES="$glibcpp_MOFILES $ling.mo"; \
- glibcpp_POFILES="$glibcpp_POFILES $ling.po"; \
+ glibcxx_MOFILES="$glibcxx_MOFILES $ling.mo"; \
+ glibcxx_POFILES="$glibcxx_POFILES $ling.po"; \
done
- AC_SUBST(glibcpp_MOFILES)
- AC_SUBST(glibcpp_POFILES)
+ AC_SUBST(glibcxx_MOFILES)
+ AC_SUBST(glibcxx_POFILES)
CLOCALE_H=config/locale/gnu/c_locale.h
CLOCALE_CC=config/locale/gnu/c_locale.cc
- CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
CCODECVT_CC=config/locale/gnu/codecvt_members.cc
CCOLLATE_CC=config/locale/gnu/collate_members.cc
CCTYPE_CC=config/locale/gnu/ctype_members.cc
CTIME_CC=config/locale/gnu/time_members.cc
CLOCALE_INTERNAL_H=config/locale/gnu/c++locale_internal.h
;;
- xieee_1003.1-2001)
- AC_MSG_RESULT(generic)
+ ieee_1003.1-2001)
+ AC_MSG_RESULT(IEEE 1003.1)
CLOCALE_H=config/locale/ieee_1003.1-2001/c_locale.h
CLOCALE_CC=config/locale/ieee_1003.1-2001/c_locale.cc
- CCODECVT_H=config/locale/ieee_1003.1-2001/codecvt_specializations.h
CCODECVT_CC=config/locale/generic/codecvt_members.cc
CCOLLATE_CC=config/locale/generic/collate_members.cc
CCTYPE_CC=config/locale/generic/ctype_members.cc
CTIME_CC=config/locale/generic/time_members.cc
CLOCALE_INTERNAL_H=config/locale/generic/c++locale_internal.h
;;
- *)
- echo "$enable_clocale is an unknown locale package" 1>&2
- exit 1
- ;;
esac
# This is where the testsuite looks for locale catalogs, using the
# -DLOCALEDIR define during testsuite compilation.
- glibcpp_localedir=${glibcpp_builddir}/po/share/locale
- AC_SUBST(glibcpp_localedir)
+ glibcxx_localedir=${glibcxx_builddir}/po/share/locale
+ AC_SUBST(glibcxx_localedir)
- # For the time being, transform ctype_noninline.h to ctype_members_char.cc
-# CCTYPE_CHAR_CC=config/${os_include_dir}/ctype_noninline.h
+ # 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 $USE_NLS = yes; then
+ AC_DEFINE(_GLIBCXX_USE_NLS, 1,
+ [Define if NLS translations are to be used.])
+ fi
AC_SUBST(USE_NLS)
AC_SUBST(CLOCALE_H)
- AC_SUBST(CCODECVT_H)
AC_SUBST(CMESSAGES_H)
+ AC_SUBST(CCODECVT_CC)
+ AC_SUBST(CCOLLATE_CC)
+ AC_SUBST(CCTYPE_CC)
+ AC_SUBST(CMESSAGES_CC)
+ AC_SUBST(CMONEY_CC)
+ AC_SUBST(CNUMERIC_CC)
AC_SUBST(CTIME_H)
- AC_LINK_FILES($CLOCALE_CC, src/c++locale.cc)
- AC_LINK_FILES($CCODECVT_CC, src/codecvt_members.cc)
- AC_LINK_FILES($CCOLLATE_CC, src/collate_members.cc)
-# AC_LINK_FILES($CCTYPE_CHAR_CC, src/ctype_members_char.cc)
- AC_LINK_FILES($CCTYPE_CC, src/ctype_members.cc)
- AC_LINK_FILES($CMESSAGES_CC, src/messages_members.cc)
- AC_LINK_FILES($CMONEY_CC, src/monetary_members.cc)
- AC_LINK_FILES($CNUMERIC_CC, src/numeric_members.cc)
- AC_LINK_FILES($CTIME_CC, src/time_members.cc)
- AC_LINK_FILES($CLOCALE_INTERNAL_H, src/c++locale_internal.h)
+ AC_SUBST(CTIME_CC)
+ AC_SUBST(CLOCALE_CC)
+ AC_SUBST(CLOCALE_INTERNAL_H)
])
dnl
-dnl Check for which I/O library to use: libio, or something specific.
-dnl
-dnl GLIBCPP_ENABLE_CSTDIO
-dnl --enable-cstdio=libio sets config/io/c_io_libio.h and friends
-dnl
-dnl default is stdio
-dnl
-AC_DEFUN(GLIBCPP_ENABLE_CSTDIO, [
- AC_MSG_CHECKING([for cstdio to use])
- AC_ARG_ENABLE(cstdio,
- [ --enable-cstdio enable stdio for target io package.
- --enable-cstdio=LIB use LIB target-speific io package. [default=stdio]
- ],
- if test x$enable_cstdio = xno; then
- enable_cstdio=stdio
- fi,
- enable_cstdio=stdio)
-
- enable_cstdio_flag=$enable_cstdio
-
- dnl Check if a valid I/O package
- case x${enable_cstdio_flag} in
- xlibio)
- CSTDIO_H=config/io/c_io_libio.h
- BASIC_FILE_H=config/io/basic_file_libio.h
- BASIC_FILE_CC=config/io/basic_file_libio.cc
- AC_MSG_RESULT(libio)
-
- # see if we are on a system with libio native (ie, linux)
- AC_CHECK_HEADER(libio.h, has_libio=yes, has_libio=no)
-
- # Need to check and see what version of glibc is being used. If
- # it's not glibc-2.2 or higher, then we'll need to go ahead and
- # compile most of libio for linux systems.
- if test x$has_libio = x"yes"; then
- case "$target" in
- *-*-linux*)
- AC_MSG_CHECKING([for glibc version >= 2.2])
- AC_EGREP_CPP([ok], [
- #include <features.h>
- #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
- ok
- #endif
- ], glibc_satisfactory=yes, glibc_satisfactory=no)
- AC_MSG_RESULT($glibc_satisfactory)
- ;;
- esac
-
- # XXX at the moment, admit defeat and force the recompilation
- # XXX of glibc even on glibc-2.2 systems, because libio is not synched.
- glibc_satisfactory=no
-
- if test x$glibc_satisfactory = x"yes"; then
- need_libio=no
- need_wlibio=no
- else
- need_libio=yes
- # bkoz XXX need to add checks to enable this
- # pme XXX here's a first pass at such a check
- if test x$enable_c_mbchar != xno; then
- need_wlibio=yes
- else
- need_wlibio=no
- fi
- fi
+dnl Check for which std::allocator base class to use. The choice is
+dnl mapped from a subdirectory of include/ext.
+dnl
+dnl Default is new.
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_ALLOCATOR], [
+ AC_MSG_CHECKING([for std::allocator base class])
+ GLIBCXX_ENABLE(libstdcxx-allocator,auto,[=KIND],
+ [use KIND for target std::allocator base],
+ [permit new|malloc|mt|bitmap|pool|yes|no|auto])
- else
- # Using libio, but <libio.h> doesn't exist on the target system. . .
- need_libio=yes
- # bkoz XXX need to add checks to enable this
- # pme XXX here's a first pass at such a check
- if test x$enable_c_mbchar != xno; then
- need_wlibio=yes
- else
- need_wlibio=no
- fi
- fi
+ # 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
;;
- xstdio | x | xno | xnone | xyes)
- # default
+ pool)
+ ALLOCATOR_H=config/allocator/pool_allocator_base.h
+ ALLOCATOR_NAME=__gnu_cxx::__pool_alloc
+ ;;
+ esac
+
+ 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 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 test -f $glibcxx_builddir/../libgomp/omp.h; then
+ enable_parallel=yes;
+ else
+ AC_MSG_NOTICE([$glibcxx_builddir/../libgomp/omp.h not found])
+ fi
+
+ AC_MSG_CHECKING([for parallel mode support])
+ AC_MSG_RESULT([$enable_parallel])
+ GLIBCXX_CONDITIONAL(ENABLE_PARALLEL, test $enable_parallel = yes)
+])
+
+
+dnl
+dnl Check for which I/O library to use: stdio, or something specific.
+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 ${enable_cstdio} in
+ stdio)
CSTDIO_H=config/io/c_io_stdio.h
BASIC_FILE_H=config/io/basic_file_stdio.h
BASIC_FILE_CC=config/io/basic_file_stdio.cc
AC_MSG_RESULT(stdio)
-
- # We're not using stdio.
- need_libio=no
- need_wlibio=no
- ;;
- *)
- echo "$enable_cstdio is an unknown io package" 1>&2
- exit 1
;;
esac
+
AC_SUBST(CSTDIO_H)
AC_SUBST(BASIC_FILE_H)
- AC_LINK_FILES($BASIC_FILE_CC, src/basic_file.cc)
-
- # 2000-08-04 bkoz hack
- CCODECVT_C=config/io/c_io_libio_codecvt.c
- AC_SUBST(CCODECVT_C)
- # 2000-08-04 bkoz hack
-
- AM_CONDITIONAL(GLIBCPP_BUILD_LIBIO,
- test "$need_libio" = yes || test "$need_wlibio" = yes)
- AM_CONDITIONAL(GLIBCPP_NEED_LIBIO, test "$need_libio" = yes)
- AM_CONDITIONAL(GLIBCPP_NEED_WLIBIO, test "$need_wlibio" = yes)
- if test "$need_libio" = yes || test "$need_wlibio" = yes; then
- libio_la=../libio/libio.la
- else
- libio_la=
- fi
- AC_SUBST(libio_la)
+ AC_SUBST(BASIC_FILE_CC)
])
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 Check for "unusual" flags to pass to the compiler while building.
dnl
-AC_DEFUN(GLIBCPP_ENABLE_THREADS, [
- AC_MSG_CHECKING([for thread model used by GCC])
- target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
- AC_MSG_RESULT([$target_thread_file])
-
- if test $target_thread_file != single; then
- AC_DEFINE(HAVE_GTHR_DEFAULT)
- AC_DEFINE(_GLIBCPP_SUPPORTS_WEAK, __GXX_WEAK__)
+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
- glibcpp_thread_h=gthr-$target_thread_file.h
- AC_SUBST(glibcpp_thread_h)
+ EXTRA_CXX_FLAGS="$enable_cxx_flags"
+ AC_MSG_RESULT($EXTRA_CXX_FLAGS)
+ AC_SUBST(EXTRA_CXX_FLAGS)
])
dnl
-dnl Check for exception handling support. If an explicit enable/disable
-dnl sjlj exceptions is given, we don't have to detect. Otherwise the
-dnl target may or may not support call frame exceptions.
+dnl Check to see if debugging libraries are to be built.
dnl
-dnl GLIBCPP_ENABLE_SJLJ_EXCEPTIONS
-dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
-dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
+dnl --enable-libstdcxx-debug
+dnl builds a separate set of debugging libraries in addition to the
+dnl normal (shared, static) libstdc++ binaries.
dnl
-dnl Define _GLIBCPP_SJLJ_EXCEPTIONS if the compiler is configured for it.
+dnl --disable-libstdcxx-debug
+dnl builds only one (non-debug) version of libstdc++.
dnl
-AC_DEFUN(GLIBCPP_ENABLE_SJLJ_EXCEPTIONS, [
- AC_MSG_CHECKING([for exception model to use])
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_ARG_ENABLE(sjlj-exceptions,
- [ --enable-sjlj-exceptions force use of builtin_setjmp for exceptions],
- [:],
- [dnl Botheration. Now we've got to detect the exception model.
- dnl Link tests against libgcc.a are problematic since -- at least
- dnl as of this writing -- we've not been given proper -L bits for
- dnl single-tree newlib and libgloss.
- dnl
- dnl This is what AC_TRY_COMPILE would do if it didn't delete the
- dnl conftest files before we got a change to grep them first.
- cat > conftest.$ac_ext << EOF
-[#]line __oline__ "configure"
-struct S { ~S(); };
-void bar();
-void foo()
-{
- S s;
- bar();
-}
-EOF
- old_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS="-S -fexceptions"
- if AC_TRY_EVAL(ac_compile); then
- if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
- enable_sjlj_exceptions=yes
- elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
- enable_sjlj_exceptions=no
- fi
- fi
- CXXFLAGS="$old_CXXFLAGS"
- rm -f conftest*])
- if test x$enable_sjlj_exceptions = xyes; then
- AC_DEFINE(_GLIBCPP_SJLJ_EXCEPTIONS, 1,
- [Define if the compiler is configured for setjmp/longjmp exceptions.])
- ac_exception_model_name=sjlj
- elif test x$enable_sjlj_exceptions = xno; then
- ac_exception_model_name="call frame"
- else
- AC_MSG_ERROR([unable to detect exception model])
- fi
- AC_LANG_RESTORE
- AC_MSG_RESULT($ac_exception_model_name)
+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 $enable_libstdcxx_debug = yes)
])
dnl
-dnl Check for libunwind exception handling support. If enabled then
-dnl we assume that the _Unwind_* functions that make up the Unwind ABI
-dnl (_Unwind_RaiseException, _Unwind_Resume, etc.) are defined by
-dnl libunwind instead of libgcc and that libstdc++ has a dependency
-dnl on libunwind as well as libgcc.
+dnl Check for explicit debug flags.
dnl
-dnl GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS
-dnl --enable-libunwind-exceptions forces the use of libunwind.
-dnl --disable-libunwind-exceptions assumes there is no libunwind.
+dnl --enable-libstdcxx-debug-flags='-O1'
+dnl is a general method for passing flags to be used when
+dnl building debug libraries with --enable-debug.
dnl
-dnl Define _GLIBCPP_LIBUNWIND_EXCEPTIONS if requested.
+dnl --disable-libstdcxx-debug-flags does nothing.
+dnl + Usage: GLIBCXX_ENABLE_DEBUG_FLAGS(default flags)
+dnl If "default flags" is an empty string, the effect is the same
+dnl as --disable or --enable=no.
dnl
-AC_DEFUN(GLIBCPP_ENABLE_LIBUNWIND_EXCEPTIONS, [
- AC_MSG_CHECKING([for use of libunwind])
- AC_ARG_ENABLE(libunwind-exceptions,
- [ --enable-libunwind-exceptions force use of libunwind for exceptions],
- use_libunwind_exceptions=$enableval,
- use_libunwind_exceptions=no)
- AC_MSG_RESULT($use_libunwind_exceptions)
- dnl Option parsed, now set things appropriately
- if test x"$use_libunwind_exceptions" = xyes; then
- LIBUNWIND_FLAG="-lunwind"
- else
- LIBUNWIND_FLAG=""
- fi
- AC_SUBST(LIBUNWIND_FLAG)
-])
+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])
-dnl
-dnl Check for ISO/IEC 9899:1999 "C99" support.
-dnl
-dnl GLIBCPP_ENABLE_C99
-dnl --enable-c99 defines _GLIBCPP_USE_C99
-dnl --disable-c99 leaves _GLIBCPP_USE_C99 undefined
-dnl + Usage: GLIBCPP_ENABLE_C99[(DEFAULT)]
-dnl Where DEFAULT is either `yes' or `no'. If omitted, it
-dnl defaults to `no'.
-dnl + If 'C99' stuff is not available, ignores DEFAULT and sets `no'.
-dnl
-dnl GLIBCPP_ENABLE_C99
-AC_DEFUN(GLIBCPP_ENABLE_C99, [dnl
- define([GLIBCPP_ENABLE_C99_DEFAULT], ifelse($1, yes, yes, no))dnl
-
- AC_ARG_ENABLE(c99,
- changequote(<<, >>)dnl
- <<--enable-c99 turns on 'ISO/IEC 9899:1999 support' [default=>>GLIBCPP_ENABLE_C99_DEFAULT],
- changequote([, ])dnl
- [case "$enableval" in
- yes) enable_c99=yes ;;
- no) enable_c99=no ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable C99]) ;;
- esac],
- enable_c99=GLIBCPP_ENABLE_C99_DEFAULT)dnl
-
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
-
- # Check for the existence of <math.h> functions used if C99 is enabled.
- ac_c99_math=yes;
- AC_MSG_CHECKING([for ISO C99 support in <math.h>])
- AC_TRY_COMPILE([#include <math.h>],[fpclassify(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isfinite(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isinf(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isnan(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isnormal(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[signbit(0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isgreater(0.0,0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],
- [isgreaterequal(0.0,0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[isless(0.0,0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],[islessequal(0.0,0.0);],,[ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],
- [islessgreater(0.0,0.0);],, [ac_c99_math=no])
- AC_TRY_COMPILE([#include <math.h>],
- [isunordered(0.0,0.0);],, [ac_c99_math=no])
- AC_MSG_RESULT($ac_c99_math)
+ # Option parsed, now set things appropriately
+ DEBUG_FLAGS="$enable_libstdcxx_debug_flags"
+ AC_SUBST(DEBUG_FLAGS)
- # Check for the existence in <stdio.h> of vscanf, et. al.
- ac_c99_stdio=yes;
- AC_MSG_CHECKING([for ISO C99 support in <stdio.h>])
- AC_TRY_COMPILE([#include <stdio.h>],
- [snprintf("12", 0, "%i");],, [ac_c99_stdio=no])
- AC_TRY_COMPILE([#include <stdio.h>
- #include <stdarg.h>
- void foo(char* fmt, ...)
- {va_list args; va_start(args, fmt);
- vfscanf(stderr, "%i", args);}],
- [],, [ac_c99_stdio=no])
- AC_TRY_COMPILE([#include <stdio.h>
- #include <stdarg.h>
- void foo(char* fmt, ...)
- {va_list args; va_start(args, fmt);
- vscanf("%i", args);}],
- [],, [ac_c99_stdio=no])
- AC_TRY_COMPILE([#include <stdio.h>
- #include <stdarg.h>
- void foo(char* fmt, ...)
- {va_list args; va_start(args, fmt);
- vsnprintf(fmt, 0, "%i", args);}],
- [],, [ac_c99_stdio=no])
- AC_TRY_COMPILE([#include <stdio.h>
- #include <stdarg.h>
- void foo(char* fmt, ...)
- {va_list args; va_start(args, fmt);
- vsscanf(fmt, "%i", args);}],
- [],, [ac_c99_stdio=no])
- AC_MSG_RESULT($ac_c99_stdio)
+ AC_MSG_NOTICE([Debug build flags set to $DEBUG_FLAGS])
+])
- # Check for the existence in <stdlib.h> of lldiv_t, et. al.
- ac_c99_stdlib=yes;
- AC_MSG_CHECKING([for lldiv_t declaration])
- AC_CACHE_VAL(ac_c99_lldiv_t, [
- AC_TRY_COMPILE([#include <stdlib.h>],
- [ lldiv_t mydivt;],
- [ac_c99_lldiv_t=yes], [ac_c99_lldiv_t=no])
- ])
- AC_MSG_RESULT($ac_c99_lldiv_t)
- AC_MSG_CHECKING([for ISO C99 support in <stdlib.h>])
- AC_TRY_COMPILE([#include <stdlib.h>],
- [char* tmp; strtof("gnu", &tmp);],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>],
- [char* tmp; strtold("gnu", &tmp);],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>], [llabs(10);],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>], [lldiv(10,1);],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>], [atoll("10");],, [ac_c99_stdlib=no])
- AC_TRY_COMPILE([#include <stdlib.h>], [_Exit(0);],, [ac_c99_stdlib=no])
- if test x"$ac_c99_lldiv_t" = x"no"; then
- ac_c99_stdlib=no;
- fi;
- AC_MSG_RESULT($ac_c99_stdlib)
-
- # Check for the existence of <wchar.h> functions used if C99 is enabled.
- # XXX the wchar.h checks should be rolled into the general C99 bits.
- ac_c99_wchar=yes;
- AC_MSG_CHECKING([for additional ISO C99 support in <wchar.h>])
- AC_TRY_COMPILE([#include <wchar.h>],
- [wcstold(L"10.0", NULL);],, [ac_c99_wchar=no])
- AC_TRY_COMPILE([#include <wchar.h>],
- [wcstoll(L"10", NULL, 10);],, [ac_c99_wchar=no])
- AC_TRY_COMPILE([#include <wchar.h>],
- [wcstoull(L"10", NULL, 10);],, [ac_c99_wchar=no])
- AC_MSG_RESULT($ac_c99_wchar)
-
- AC_MSG_CHECKING([for enabled ISO C99 support])
- if test x"$ac_c99_math" = x"no" ||
- test x"$ac_c99_stdio" = x"no" ||
- test x"$ac_c99_stdlib" = x"no" ||
- test x"$ac_c99_wchar" = x"no"; then
- enable_c99=no;
- fi;
- AC_MSG_RESULT($enable_c99)
-
- # Option parsed, now set things appropriately
- if test x"$enable_c99" = x"yes"; then
- AC_DEFINE(_GLIBCPP_USE_C99)
+dnl
+dnl Check if the user only wants a freestanding library implementation.
+dnl
+dnl --disable-hosted-libstdcxx will turn off most of the library build,
+dnl installing only the headers required by [17.4.1.3] and the language
+dnl support library. More than that will be built (to keep the Makefiles
+dnl conveniently clean), but not installed.
+dnl
+dnl Sets:
+dnl is_hosted (yes/no)
+dnl
+dnl Defines:
+dnl _GLIBCXX_HOSTED (always defined, either to 1 or 0)
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [
+ AC_ARG_ENABLE([hosted-libstdcxx],
+ AC_HELP_STRING([--disable-hosted-libstdcxx],
+ [only build freestanding C++ runtime support]),,
+ [case "$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
-
- AC_LANG_RESTORE
+ 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 for template specializations for the 'long long' type extension.
+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 GLIBCPP_ENABLE_LONG_LONG
-dnl --enable-long-long defines _GLIBCPP_USE_LONG_LONG
-dnl --disable-long-long leaves _GLIBCPP_USE_LONG_LONG undefined
-dnl + Usage: GLIBCPP_ENABLE_LONG_LONG[(DEFAULT)]
-dnl Where DEFAULT is either `yes' or `no'. If omitted, it
-dnl defaults to `no'.
-dnl + If 'long long' stuff is not available, ignores DEFAULT and sets `no'.
-dnl
-dnl GLIBCPP_ENABLE_LONG_LONG
-AC_DEFUN(GLIBCPP_ENABLE_LONG_LONG, [dnl
- define([GLIBCPP_ENABLE_LONG_LONG_DEFAULT], ifelse($1, yes, yes, no))dnl
-
- AC_ARG_ENABLE(long-long,
- changequote(<<, >>)dnl
- <<--enable-long-long turns on 'long long' [default=>>GLIBCPP_ENABLE_LONG_LONG_DEFAULT],
- changequote([, ])dnl
- [case "$enableval" in
- yes) enable_long_long=yes ;;
- no) enable_long_long=no ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable long long]) ;;
- esac],
- enable_long_long=GLIBCPP_ENABLE_LONG_LONG_DEFAULT)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])
+])
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_MSG_CHECKING([for enabled long long I/O support])
- # iostreams require strtoll, strtoull to compile
- AC_TRY_COMPILE([#include <stdlib.h>],
- [char* tmp; strtoll("gnu", &tmp, 10);],,[enable_long_long=no])
- AC_TRY_COMPILE([#include <stdlib.h>],
- [char* tmp; strtoull("gnu", &tmp, 10);],,[enable_long_long=no])
+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,$1,,[enable template specializations for 'wchar_t'])
- # Option parsed, now set things appropriately
- if test x"$enable_long_long" = xyes; then
- AC_DEFINE(_GLIBCPP_USE_LONG_LONG)
+ # 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
- AC_MSG_RESULT($enable_long_long)
- AC_LANG_RESTORE
-])
+ # Test it always, for use in GLIBCXX_ENABLE_C99, together with
+ # ac_has_wchar_h.
+ AC_CHECK_HEADERS(wctype.h, ac_has_wctype_h=yes, ac_has_wctype_h=no)
+
+ if test x"$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
-dnl
-dnl Check for what kind of C headers to use.
-dnl
-dnl GLIBCPP_ENABLE_CHEADERS
-dnl --enable-cheaders= [does stuff].
-dnl --disable-cheaders [does not do anything, really].
-dnl + This will eventually need to be 'c_shadow' by default.
-dnl + Usage: GLIBCPP_ENABLE_CHEADERS[(DEFAULT)]
-dnl Where DEFAULT is either `c' or `c_std' or 'c_shadow'.
-dnl If ommitted, it defaults to `c_std'.
-AC_DEFUN(GLIBCPP_ENABLE_CHEADERS, [dnl
-define([GLIBCPP_ENABLE_CHEADERS_DEFAULT], ifelse($1, c_std, c_std, c_std))dnl
-AC_MSG_CHECKING([for c header strategy to use])
-AC_ARG_ENABLE(cheaders,
-changequote(<<, >>)dnl
-<< --enable-cheaders construct "C" header files for g++ [default=>>GLIBCPP_ENABLE_CHEADERS_DEFAULT],
-changequote([, ])
- [case "$enableval" in
- c)
- enable_cheaders=c
- ;;
- c_std)
- enable_cheaders=c_std
- ;;
- c_shadow)
- enable_cheaders=c_shadow
- ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable "C" headers])
- ;;
- esac],
- enable_cheaders=GLIBCPP_ENABLE_CHEADERS_DEFAULT)
- AC_MSG_RESULT($enable_cheaders)
-
- dnl Option parsed, now set things appropriately
- case "$enable_cheaders" in
- c_shadow)
- C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_shadow'
- ;;
- c_std)
- C_INCLUDE_DIR='${glibcpp_srcdir}/include/c_std'
- ;;
- c)
- C_INCLUDE_DIR='${glibcpp_srcdir}/include/c'
- ;;
- esac
+ AC_LANG_RESTORE
+ fi
- AC_SUBST(C_INCLUDE_DIR)
- AM_CONDITIONAL(GLIBCPP_C_HEADERS_C, test "$enable_cheaders" = c)
- AM_CONDITIONAL(GLIBCPP_C_HEADERS_C_STD, test "$enable_cheaders" = c_std)
- AM_CONDITIONAL(GLIBCPP_C_HEADERS_COMPATIBILITY, test "$c_compatibility" = yes)
+ 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 for wide character support. Has the same effect as the option
-dnl in gcc's configure, but in a form that autoconf can mess with.
-dnl
-dnl GLIBCPP_ENABLE_C_MBCHAR
-dnl --enable-c-mbchar requests all the wchar_t stuff.
-dnl --disable-c-mbchar doesn't.
-dnl + Usage: GLIBCPP_ENABLE_C_MBCHAR[(DEFAULT)]
-dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
-dnl defaults to `no'.
-AC_DEFUN(GLIBCPP_ENABLE_C_MBCHAR, [dnl
-define([GLIBCPP_ENABLE_C_MBCHAR_DEFAULT], ifelse($1, yes, yes, no))dnl
-AC_ARG_ENABLE(c-mbchar,
-changequote(<<, >>)dnl
-<< --enable-c-mbchar enable multibyte (wide) characters [default=>>GLIBCPP_ENABLE_C_MBCHAR_DEFAULT],
-changequote([, ])dnl
-[case "$enableval" in
- yes) enable_c_mbchar=yes ;;
- no) enable_c_mbchar=no ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable c-mbchar]) ;;
- esac],
-enable_c_mbchar=GLIBCPP_ENABLE_C_MBCHAR_DEFAULT)dnl
-dnl Option parsed, now other scripts can test enable_c_mbchar for yes/no.
+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 $enable_libstdcxx_pch = yes; then
+ glibcxx_PCHFLAGS="-include bits/stdc++.h"
+ else
+ glibcxx_PCHFLAGS=""
+ fi
+ AC_SUBST(glibcxx_PCHFLAGS)
])
dnl
-dnl Set up *_INCLUDES and *_INCLUDE_DIR variables for all sundry Makefile.am's.
+dnl Check for atomic builtins.
+dnl See:
+dnl http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html#Atomic-Builtins
+dnl
+dnl This checks to see if the host supports the compiler-generated
+dnl builtins for atomic operations for various integral sizes. Note, this
+dnl is intended to be an all-or-nothing switch, so all the atomic operations
+dnl that are used should be checked.
+dnl
+dnl Note:
+dnl libgomp and libgfortran do this with a link test, instead of an asm test.
+dnl see: CHECK_SYNC_FETCH_AND_ADD
dnl
-dnl TOPLEVEL_INCLUDES
-dnl LIBMATH_INCLUDES
-dnl LIBSUPCXX_INCLUDES
-dnl LIBIO_INCLUDES
-dnl CSHADOW_INCLUDES
+dnl Defines:
+dnl _GLIBCXX_ATOMIC_BUILTINS_1
+dnl _GLIBCXX_ATOMIC_BUILTINS_2
+dnl _GLIBCXX_ATOMIC_BUILTINS_4
+dnl _GLIBCXX_ATOMIC_BUILTINS_8
dnl
-dnl GLIBCPP_EXPORT_INCLUDES
-AC_DEFUN(GLIBCPP_EXPORT_INCLUDES, [
- # Root level of the build directory include sources.
- GLIBCPP_INCLUDES="-I${glibcpp_builddir}/include/${target_alias} -I${glibcpp_builddir}/include"
+AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ old_CXXFLAGS="$CXXFLAGS"
+
+ # Compile unoptimized.
+ CXXFLAGS='-O0 -S'
- # Passed down for canadian crosses.
- if test x"$CANADIAN" = xyes; then
- TOPLEVEL_INCLUDES='-I$(includedir)'
- fi
+ # Fake what AC_TRY_COMPILE does, without linking as this is
+ # unnecessary for a builtins test.
+
+ cat > conftest.$ac_ext << EOF
+[#]line __oline__ "configure"
+int main()
+{
+ typedef bool atomic_type;
+ atomic_type c1;
+ atomic_type c2;
+ const atomic_type c3(0);
+ __sync_fetch_and_add(&c1, c2);
+ __sync_val_compare_and_swap(&c1, c3, c2);
+ __sync_lock_test_and_set(&c1, c3);
+ __sync_lock_release(&c1);
+ __sync_synchronize();
+ return 0;
+}
+EOF
+
+ AC_MSG_CHECKING([for atomic builtins for bool])
+ if AC_TRY_EVAL(ac_compile); then
+ if grep __sync_ conftest.s >/dev/null 2>&1 ; then
+ enable_atomic_builtinsb=no
+ else
+ AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1,
+ [Define if builtin atomic operations for bool are supported on this host.])
+ enable_atomic_builtinsb=yes
+ fi
+ fi
+ AC_MSG_RESULT($enable_atomic_builtinsb)
+ rm -f conftest*
+
+ cat > conftest.$ac_ext << EOF
+[#]line __oline__ "configure"
+int main()
+{
+ typedef short atomic_type;
+ atomic_type c1;
+ atomic_type c2;
+ const atomic_type c3(0);
+ __sync_fetch_and_add(&c1, c2);
+ __sync_val_compare_and_swap(&c1, c3, c2);
+ __sync_lock_test_and_set(&c1, c3);
+ __sync_lock_release(&c1);
+ __sync_synchronize();
+ return 0;
+}
+EOF
+
+ AC_MSG_CHECKING([for atomic builtins for short])
+ if AC_TRY_EVAL(ac_compile); then
+ if grep __sync_ conftest.s >/dev/null 2>&1 ; then
+ enable_atomic_builtinss=no
+ else
+ AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_2, 1,
+ [Define if builtin atomic operations for short are supported on this host.])
+ enable_atomic_builtinss=yes
+ fi
+ fi
+ AC_MSG_RESULT($enable_atomic_builtinss)
+ rm -f conftest*
+
+ cat > conftest.$ac_ext << EOF
+[#]line __oline__ "configure"
+int main()
+{
+ // NB: _Atomic_word not necessarily int.
+ typedef int atomic_type;
+ atomic_type c1;
+ atomic_type c2;
+ const atomic_type c3(0);
+ __sync_fetch_and_add(&c1, c2);
+ __sync_val_compare_and_swap(&c1, c3, c2);
+ __sync_lock_test_and_set(&c1, c3);
+ __sync_lock_release(&c1);
+ __sync_synchronize();
+ return 0;
+}
+EOF
+
+ AC_MSG_CHECKING([for atomic builtins for int])
+ if AC_TRY_EVAL(ac_compile); then
+ if grep __sync_ conftest.s >/dev/null 2>&1 ; then
+ enable_atomic_builtinsi=no
+ else
+ AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1,
+ [Define if builtin atomic operations for int are supported on this host.])
+ enable_atomic_builtinsi=yes
+ fi
+ fi
+ AC_MSG_RESULT($enable_atomic_builtinsi)
+ rm -f conftest*
+
+ cat > conftest.$ac_ext << EOF
+[#]line __oline__ "configure"
+int main()
+{
+ typedef long long atomic_type;
+ atomic_type c1;
+ atomic_type c2;
+ const atomic_type c3(0);
+ __sync_fetch_and_add(&c1, c2);
+ __sync_val_compare_and_swap(&c1, c3, c2);
+ __sync_lock_test_and_set(&c1, c3);
+ __sync_lock_release(&c1);
+ __sync_synchronize();
+ return 0;
+}
+EOF
+
+ AC_MSG_CHECKING([for atomic builtins for long long])
+ if AC_TRY_EVAL(ac_compile); then
+ if grep __sync_ conftest.s >/dev/null 2>&1 ; then
+ enable_atomic_builtinsll=no
+ else
+ AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_8, 1,
+ [Define if builtin atomic operations for long long are supported on this host.])
+ enable_atomic_builtinsll=yes
+ fi
+ fi
+ AC_MSG_RESULT($enable_atomic_builtinsll)
+ rm -f conftest*
- LIBMATH_INCLUDES='-I$(top_srcdir)/libmath'
- LIBSUPCXX_INCLUDES='-I$(top_srcdir)/libsupc++'
+ CXXFLAGS="$old_CXXFLAGS"
+ AC_LANG_RESTORE
- if test x"$need_libio" = xyes; then
- LIBIO_INCLUDES='-I$(top_builddir)/libio -I$(top_srcdir)/libio'
- AC_SUBST(LIBIO_INCLUDES)
+ # Set atomicity_dir to builtins if either of above tests pass.
+ if test $enable_atomic_builtinsi = yes || test $enable_atomic_builtinsb = yes ; then
+ 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
- # Now, export this to all the little Makefiles....
- AC_SUBST(GLIBCPP_INCLUDES)
- AC_SUBST(TOPLEVEL_INCLUDES)
- AC_SUBST(LIBMATH_INCLUDES)
- AC_SUBST(LIBSUPCXX_INCLUDES)
])
dnl
-dnl Set up *_FLAGS and *FLAGS variables for all sundry Makefile.am's.
+dnl Check for exception handling support. If an explicit enable/disable
+dnl sjlj exceptions is given, we don't have to detect. Otherwise the
+dnl target may or may not support call frame exceptions.
dnl
-AC_DEFUN(GLIBCPP_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...
- # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
- OPTIMIZE_CXXFLAGS=
- AC_SUBST(OPTIMIZE_CXXFLAGS)
+dnl --enable-sjlj-exceptions forces the use of builtin setjmp.
+dnl --disable-sjlj-exceptions forces the use of call frame unwinding.
+dnl Neither one forces an attempt at detection.
+dnl
+dnl Defines:
+dnl _GLIBCXX_SJLJ_EXCEPTIONS if the compiler is configured for it
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_SJLJ_EXCEPTIONS], [
+ AC_MSG_CHECKING([for exception model to use])
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ GLIBCXX_ENABLE(sjlj-exceptions,auto,,
+ [force use of builtin_setjmp for exceptions],
+ [permit yes|no|auto])
+
+ if test $enable_sjlj_exceptions = auto; then
+ # Botheration. Now we've got to detect the exception model. Link tests
+ # against libgcc.a are problematic since we've not been given proper -L
+ # bits for single-tree newlib and libgloss.
+ #
+ # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style.
+ cat > conftest.$ac_ext << EOF
+[#]line __oline__ "configure"
+struct S { ~S(); };
+void bar();
+void foo()
+{
+ S s;
+ bar();
+}
+EOF
+ old_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS=-S
+ if AC_TRY_EVAL(ac_compile); then
+ if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
+ enable_sjlj_exceptions=yes
+ elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
+ enable_sjlj_exceptions=no
+ elif grep __cxa_end_cleanup conftest.s >/dev/null 2>&1 ; then
+ enable_sjlj_exceptions=no
+ fi
+ fi
+ CXXFLAGS="$old_CXXFLAGS"
+ rm -f conftest*
+ fi
- WARN_FLAGS='-Wall -Wno-format -W -Wwrite-strings -Winline'
- AC_SUBST(WARN_FLAGS)
+ # This is a tad weird, for hysterical raisins. We have to map
+ # enable/disable to two different models.
+ case $enable_sjlj_exceptions in
+ yes)
+ AC_DEFINE(_GLIBCXX_SJLJ_EXCEPTIONS, 1,
+ [Define if the compiler is configured for setjmp/longjmp exceptions.])
+ ac_exception_model_name=sjlj
+ ;;
+ no)
+ ac_exception_model_name="call frame"
+ ;;
+ *)
+ AC_MSG_ERROR([unable to detect exception model])
+ ;;
+ esac
+ AC_LANG_RESTORE
+ AC_MSG_RESULT($ac_exception_model_name)
])
+
dnl
-dnl GLIBCPP_EXPORT_INSTALL_INFO
-dnl calculates gxx_install_dir
-dnl exports glibcpp_toolexecdir
-dnl exports glibcpp_toolexeclibdir
-dnl exports glibcpp_prefixdir
+dnl Allow visibility attributes to be used on namespaces, objects, etc.
dnl
-dnl Assumes cross_compiling bits already done, and with_cross_host in
-dnl particular
-dnl
-dnl GLIBCPP_EXPORT_INSTALL_INFO
-AC_DEFUN(GLIBCPP_EXPORT_INSTALL_INFO, [
-# Assumes glibcpp_builddir, glibcpp_srcdir are alreay set up and
-# exported correctly in GLIBCPP_CONFIGURE.
-glibcpp_toolexecdir=no
-glibcpp_toolexeclibdir=no
-glibcpp_prefixdir=${prefix}
-
-# Process the option --with-gxx-include-dir=<path to include-files directory>
-AC_MSG_CHECKING([for --with-gxx-include-dir])
-AC_ARG_WITH(gxx-include-dir,
-[ --with-gxx-include-dir the installation directory for include files],
-[case "${withval}" in
- yes)
- AC_MSG_ERROR(Missing directory for --with-gxx-include-dir)
- gxx_include_dir=no
- ;;
- no)
- gxx_include_dir=no
- ;;
- *)
- gxx_include_dir=${withval}
- ;;
-esac], [gxx_include_dir=no])
-AC_MSG_RESULT($gxx_include_dir)
-
-# Process the option "--enable-version-specific-runtime-libs"
-AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
-AC_ARG_ENABLE(version-specific-runtime-libs,
-[ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
-[case "$enableval" in
- yes) version_specific_libs=yes ;;
- no) version_specific_libs=no ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
- esac],
-version_specific_libs=no)dnl
-# Option set, now we can test it.
-AC_MSG_RESULT($version_specific_libs)
-
-# Default case for install directory for include files.
-if test $version_specific_libs = no && test $gxx_include_dir = no; then
- gxx_include_dir='$(prefix)'/include/c++/${gcc_version}
-fi
+dnl --enable-visibility enables attempt to use visibility attributes.
+dnl --disable-visibility turns off all use of visibility attributes.
+dnl + Usage: GLIBCXX_ENABLE_VISIBILITY[(DEFAULT)]
+dnl Where DEFAULT is 'yes'.
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_VISIBILITY], [
+GLIBCXX_ENABLE(visibility,$1,,[enables visibility safe usage])
-# Version-specific runtime libs processing.
-if test $version_specific_libs = yes; then
- # Need the gcc compiler version to know where to install libraries
- # and header files if --enable-version-specific-runtime-libs option
- # is selected.
- if test x"$gxx_include_dir" = x"no"; then
- gxx_include_dir='$(libdir)/gcc-lib/$(target_alias)/'${gcc_version}/include/c++
+if test x$enable_visibility = xyes ; then
+ dnl all hail libgfortran
+ dnl Check whether the target supports hidden visibility.
+ AC_CACHE_CHECK([whether the target supports hidden visibility],
+ 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 $glibcxx_cv_have_attribute_visibility = no; then
+ enable_visibility=no
fi
- glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
- glibcpp_toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
fi
-# Calculate glibcpp_toolexecdir, glibcpp_toolexeclibdir
-# Install a library built with a cross compiler in tooldir, not libdir.
-if test x"$glibcpp_toolexecdir" = x"no"; then
- if test -n "$with_cross_host" &&
- test x"$with_cross_host" != x"no"; then
- glibcpp_toolexecdir='$(exec_prefix)/$(target_alias)'
- glibcpp_toolexeclibdir='$(toolexecdir)/lib'
+GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_visibility = yes)
+AC_MSG_NOTICE([visibility supported: $enable_visibility])
+])
+
+
+dnl
+dnl Add version tags to symbols in shared library (or not), additionally
+dnl marking other symbols as private/local (or not).
+dnl
+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 + 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])
+
+# If we never went through the GLIBCXX_CHECK_LINKER_FEATURES macro, then we
+# don't know enough about $LD to do tricks...
+AC_REQUIRE([GLIBCXX_CHECK_LINKER_FEATURES])
+
+# Turn a 'yes' into a suitable default.
+if test x$enable_symvers = xyes ; then
+ if test $enable_shared = no || test "x$LD" = x || test x$gcc_no_link = xyes; then
+ enable_symvers=no
else
- glibcpp_toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
- glibcpp_toolexeclibdir='$(libdir)'
+ if test $with_gnu_ld = yes ; then
+ case ${target_os} in
+ cygwin* | pe | mingw32* | hpux*)
+ enable_symvers=no ;;
+ *)
+ enable_symvers=gnu ;;
+ esac
+ else
+ case ${target_os} in
+ darwin*)
+ enable_symvers=darwin ;;
+ *)
+ enable_symvers=no ;;
+ esac
+ fi
fi
- glibcpp_toolexeclibdir=$glibcpp_toolexeclibdir/`$CC -print-multi-os-directory`
fi
-AC_MSG_CHECKING([for install location])
-AC_MSG_RESULT($gxx_include_dir)
-
-AC_SUBST(glibcpp_prefixdir)
-AC_SUBST(gxx_include_dir)
-AC_SUBST(glibcpp_toolexecdir)
-AC_SUBST(glibcpp_toolexeclibdir)
-])
+# Check to see if 'darwin' or 'darwin-export' can win.
+if test x$enable_symvers = xdarwin-export ; then
+ enable_symvers=darwin
+fi
+# Check to see if 'gnu' can win.
+if test $enable_symvers = gnu || test $enable_symvers = gnu-versioned-namespace; then
+ # Check to see if libgcc_s exists, indicating that shared libgcc is possible.
+ AC_MSG_CHECKING([for shared libgcc])
+ ac_save_CFLAGS="$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)
-# Check for functions in math library.
-# Ulrich Drepper <drepper@cygnus.com>, 1998.
-#
-# This file can 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.
+ # 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
-# serial 1
-
-dnl AC_REPLACE_MATHFUNCS(FUNCTION...)
-AC_DEFUN(AC_REPLACE_MATHFUNCS,
-[AC_CHECK_FUNCS([$1], , [LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"])])
-
-
-dnl This macro searches for a GNU version of make. If a match is found, the
-dnl makefile variable `ifGNUmake' is set to the empty string, otherwise it is
-dnl set to "#". This is useful for including a special features in a Makefile,
-dnl which cannot be handled by other versions of make. The variable
-dnl _cv_gnu_make_command is set to the command to invoke GNU make if it exists,
-dnl the empty string otherwise.
-dnl
-dnl Here is an example of its use:
-dnl
-dnl Makefile.in might contain:
-dnl
-dnl # A failsafe way of putting a dependency rule into a makefile
-dnl $(DEPEND):
-dnl $(CC) -MM $(srcdir)/*.c > $(DEPEND)
-dnl
-dnl @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
-dnl @ifGNUmake@ include $(DEPEND)
-dnl @ifGNUmake@ endif
-dnl
-dnl Then configure.in would normally contain:
-dnl
-dnl CHECK_GNU_MAKE()
-dnl AC_OUTPUT(Makefile)
-dnl
-dnl Then perhaps to cause gnu make to override any other make, we could do
-dnl something like this (note that GNU make always looks for GNUmakefile first):
-dnl
-dnl if ! test x$_cv_gnu_make_command = x ; then
-dnl mv Makefile GNUmakefile
-dnl echo .DEFAULT: > Makefile ;
-dnl echo \ $_cv_gnu_make_command \$@ >> Makefile;
-dnl fi
-dnl
-dnl Then, if any (well almost any) other make is called, and GNU make also
-dnl exists, then the other make wraps the GNU make.
-dnl
-dnl @author John Darrington <j.darrington@elvis.murdoch.edu.au>
-dnl @version 1.1 #### replaced Id string now that Id is for lib-v3; pme
-dnl
-dnl #### Changes for libstdc++-v3: reformatting and linewrapping; prepending
-dnl #### GLIBCPP_ to the macro name; adding the :-make fallback in the
-dnl #### conditional's subshell (" --version" is not a command), using a
-dnl #### different option to grep(1).
-dnl #### -pme
-dnl #### Fixed Bourne shell portability bug (use ${MAKE-make}, not
-dnl #### ${MAKE:-make}).
-dnl #### -msokolov
-AC_DEFUN(
- GLIBCPP_CHECK_GNU_MAKE, [AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
- _cv_gnu_make_command='' ;
-dnl Search all the common names for GNU make
- for a in "${MAKE-make}" make gmake gnumake ; do
- if ( $a --version 2> /dev/null | grep -c GNU > /dev/null )
- then
- _cv_gnu_make_command=$a ;
- break;
- fi
- done ;
- ) ;
-dnl If there was a GNU version, then set @ifGNUmake@ to the empty
-dnl string, '#' otherwise
- if test "x$_cv_gnu_make_command" != "x" ; then
- ifGNUmake='' ;
- else
- ifGNUmake='#' ;
+ # 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 ; 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
- AC_SUBST(ifGNUmake)
-])
+fi
+# Everything parsed; figure out what file 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)
+ 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.])
+ ;;
+esac
-dnl Check for headers for, and arguments to, the setrlimit() function.
-dnl Used only in testsuite_hooks.h.
-AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT_ancilliary, [
- AC_TRY_COMPILE([#include <sys/resource.h>
- #include <unistd.h>
- ], [ int f = RLIMIT_$1 ; ],
- [glibcpp_mresult=1], [glibcpp_mresult=0])
- AC_DEFINE_UNQUOTED(HAVE_MEMLIMIT_$1, $glibcpp_mresult,
- [Only used in build directory testsuite_hooks.h.])
+if test x$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)
+AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers)
+
+# Now, set up compatibility support, if any.
+# In addition, need this to deal with std::size_t mangling in
+# src/compatibility.cc. In a perfect world, could use
+# typeid(std::size_t).name()[0] to do direct substitution.
+AC_MSG_CHECKING([for size_t as unsigned int])
+ac_save_CFLAGS="$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])
])
-AC_DEFUN(GLIBCPP_CHECK_SETRLIMIT, [
- setrlimit_have_headers=yes
- AC_CHECK_HEADERS(sys/resource.h unistd.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.
- GLIBCPP_CHECK_SETRLIMIT_ancilliary(DATA)
- GLIBCPP_CHECK_SETRLIMIT_ancilliary(RSS)
- GLIBCPP_CHECK_SETRLIMIT_ancilliary(VMEM)
- GLIBCPP_CHECK_SETRLIMIT_ancilliary(AS)
- # Check for rlimit, setrlimit.
- AC_CACHE_VAL(ac_setrlimit, [
- AC_TRY_COMPILE([#include <sys/resource.h>
- #include <unistd.h>
- ],
- [ struct rlimit r; setrlimit(0, &r);],
- [ac_setrlimit=yes], [ac_setrlimit=no])
- ])
+
+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 glibcxx_thread_h
+dnl
+dnl Defines:
+dnl HAVE_GTHR_DEFAULT
+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])
+
+ if test $target_thread_file != single; then
+ AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
+ [Define if gthr-default.h exists
+ (meaning that threading support is enabled).])
fi
- AC_MSG_CHECKING([for testsuite memory limit support])
- if test $setrlimit_have_headers = yes && test $ac_setrlimit = yes; then
- ac_mem_limits=yes
- AC_DEFINE(_GLIBCPP_MEM_LIMITS)
+ glibcxx_thread_h=gthr-$target_thread_file.h
+
+ dnl Check for __GTHREADS define.
+ gthread_file=${toplevel_srcdir}/gcc/${glibcxx_thread_h}
+ if grep __GTHREADS $gthread_file >/dev/null 2>&1 ; then
+ enable_thread=yes
else
- ac_mem_limits=no
+ enable_thread=no
fi
- AC_MSG_RESULT($ac_mem_limits)
+
+ AC_SUBST(glibcxx_thread_h)
])
dnl
-dnl Does any necessary configuration of the testsuite directory. Generates
-dnl the testsuite_hooks.h header.
+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 GLIBCPP_CONFIGURE_TESTSUITE [no args]
-AC_DEFUN(GLIBCPP_CONFIGURE_TESTSUITE, [
- GLIBCPP_CHECK_SETRLIMIT
+AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-exceptions -I${toplevel_srcdir}/gcc"
- # Look for setenv, so that extended locale tests can be performed.
- GLIBCPP_CHECK_STDLIB_DECL_AND_LINKAGE_3(setenv)
+ target_thread_file=`$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
- # Export file names for ABI checking.
- baseline_file="${glibcpp_srcdir}/config/abi/${abi_baseline_triplet}/baseline_symbols.txt"
- AC_SUBST(baseline_file)
+ AC_MSG_CHECKING([for gthreads library])
- # Don't do ABI checking unless native.
- AM_CONDITIONAL(GLIBCPP_BUILD_ABI_CHECK,
- test x"$build" = x"$host" && test -z "$with_cross_host")
-])
+ AC_TRY_COMPILE([#include "gthr.h"],
+ [
+ #ifndef __GTHREADS_CXX0X
+ #error
+ #endif
+
+ // In case of POSIX threads check _POSIX_TIMEOUTS too.
+ #if (defined(_PTHREADS) \
+ && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0))
+ #error
+ #endif
+ ], [ac_has_gthreads=yes], [ac_has_gthreads=no])
+ AC_MSG_RESULT([$ac_has_gthreads])
-sinclude(../libtool.m4)
-dnl The lines below arrange for aclocal not to bring an installed
-dnl libtool.m4 into aclocal.m4, while still arranging for automake to
-dnl add a definition of LIBTOOL to Makefile.in.
-ifelse(,,,[AC_SUBST(LIBTOOL)
-AC_DEFUN([AM_PROG_LIBTOOL])
-AC_DEFUN([AC_LIBTOOL_DLOPEN])
-AC_DEFUN([AC_PROG_LD])
+ if test x"$ac_has_gthreads" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_HAS_GTHREADS, 1,
+ [Define if gthreads library is available.])
+ fi
+
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
])
# be used in projects which are not available under the GNU Public License
# but which still want to provide support for the GNU gettext functionality.
# Please note that the actual code is *not* freely available.
-
-# serial 1
-
-AC_DEFUN(AC_LC_MESSAGES, [
+AC_DEFUN([AC_LC_MESSAGES], [
AC_CHECK_HEADER(locale.h, [
AC_CACHE_CHECK([for LC_MESSAGES], ac_cv_val_LC_MESSAGES,
- [AC_TRY_LINK([#include <locale.h>], [return 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)
+ AC_DEFINE(HAVE_LC_MESSAGES, 1,
+ [Define if LC_MESSAGES is available in <locale.h>.])
fi
])
])
-
-dnl
-dnl Check for whether the Boost-derived checks should be turned on.
-dnl
-dnl GLIBCPP_ENABLE_CONCEPT_CHECKS
-dnl --enable-concept-checks turns them on.
-dnl --disable-concept-checks leaves them off.
-dnl + Usage: GLIBCPP_ENABLE_CONCEPT_CHECKS[(DEFAULT)]
-dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
-dnl defaults to `no'.
-AC_DEFUN(GLIBCPP_ENABLE_CONCEPT_CHECKS, [dnl
-define([GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT], ifelse($1, yes, yes, no))dnl
-AC_ARG_ENABLE(concept-checks,
-changequote(<<, >>)dnl
-<< --enable-concept-checks use Boost-derived template checks [default=>>GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT],
-changequote([, ])dnl
-[case "$enableval" in
- yes) enable_concept_checks=yes ;;
- no) enable_concept_checks=no ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable concept checks]) ;;
- esac],
-enable_concept_checks=GLIBCPP_ENABLE_CONCEPT_CHECKS_DEFAULT)dnl
-dnl Option parsed, now set things appropriately
-if test x"$enable_concept_checks" = xyes; then
- AC_DEFINE(_GLIBCPP_CONCEPT_CHECKS)
-fi
-])
-
-
-dnl
-dnl Add version tags to symbols in shared library (or not), additionally
-dnl marking other symbols as private/local (or not).
-dnl
-dnl GLIBCPP_ENABLE_SYMVERS
-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 + Usage: GLIBCPP_ENABLE_SYMVERS[(DEFAULT)]
-dnl Where DEFAULT is either `yes' or `no'. If ommitted, it
-dnl defaults to `no'. Passing `yes' tries to choose a default style
-dnl based on linker characteristics. Passing 'no' disables versioning.
-AC_DEFUN(GLIBCPP_ENABLE_SYMVERS, [dnl
-define([GLIBCPP_ENABLE_SYMVERS_DEFAULT], ifelse($1, yes, yes, no))dnl
-AC_ARG_ENABLE(symvers,
-changequote(<<, >>)dnl
-<< --enable-symvers=style enables symbol versioning of the shared library [default=>>GLIBCPP_ENABLE_SYMVERS_DEFAULT],
-changequote([, ])dnl
-[case "$enableval" in
- yes) enable_symvers=yes ;;
- no) enable_symvers=no ;;
- # other names here, just as sanity checks
- #gnu|sun|etcetera) enable_symvers=$enableval ;;
- gnu) enable_symvers=$enableval ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable symvers]) ;;
- esac],
-enable_symvers=GLIBCPP_ENABLE_SYMVERS_DEFAULT)dnl
-
-# If we never went through the GLIBCPP_CHECK_LINKER_FEATURES macro, then we
-# don't know enough about $LD to do tricks...
-if test x$enable_shared = xno ||
- test "x$LD" = x ||
- test x$glibcpp_gnu_ld_version = x; then
- enable_symvers=no
-fi
-
-# Check to see if libgcc_s exists, indicating that shared libgcc is possible.
-AC_MSG_CHECKING([for shared libgcc])
-ac_save_CFLAGS="$CFLAGS"
-CFLAGS=' -lgcc_s'
-AC_TRY_LINK( , [return 0], glibcpp_shared_libgcc=yes, glibcpp_shared_libgcc=no)
-CFLAGS="$ac_save_CFLAGS"
-AC_MSG_RESULT($glibcpp_shared_libgcc)
-
-# For GNU ld, we need at least this version. It's 2.12 in the same format
-# as the tested-for version. See GLIBCPP_CHECK_LINKER_FEATURES for more.
-glibcpp_min_gnu_ld_version=21200
-
-# Check to see if unspecified "yes" value can win, given results
-# above.
-if test $enable_symvers = yes ; then
- if test $with_gnu_ld = yes &&
- test $glibcpp_shared_libgcc = yes ;
- then
- if test $glibcpp_gnu_ld_version -ge $glibcpp_min_gnu_ld_version ; then
- enable_symvers=gnu
- else
- ac_test_CFLAGS="${CFLAGS+set}"
- ac_save_CFLAGS="$CFLAGS"
- CFLAGS='-shared -Wl,--version-script,conftest.map'
- enable_symvers=no
- changequote(,)
- echo 'FOO { global: f[a-z]o; local: *; };' > conftest.map
- changequote([,])
- AC_TRY_LINK([int foo;],, enable_symvers=gnu)
- if test "$ac_test_CFLAGS" = set; then
- CFLAGS="$ac_save_CFLAGS"
- else
- # this is the suspicious part
- CFLAGS=''
- fi
- rm -f conftest.map
- fi
- else
- # just fail for now
- enable_symvers=no
- fi
-fi
-
-dnl Everything parsed; figure out what file to use.
-case $enable_symvers in
- no)
- LINKER_MAP=config/linker-map.dummy
- ;;
- gnu)
- LINKER_MAP=config/linker-map.gnu
- AC_DEFINE(_GLIBCPP_SYMVER)
- ;;
-esac
-
-AC_LINK_FILES($LINKER_MAP, src/linker.map)
-AM_CONDITIONAL(GLIBCPP_BUILD_VERSIONED_SHLIB, test $enable_symvers != no)
-AC_MSG_CHECKING([versioning on shared library symbols])
-AC_MSG_RESULT($enable_symvers)
-])
+# Macros from the top-level gcc directory.
+m4_include([../config/tls.m4])
projects / msp430-gcc.git / blobdiff