# Keep these sync'd with the list in Makefile.am. The first provides an
# expandable list at autoconf time; the second provides an expandable list
# (i.e., shell variable) at configure time.
- m4_define([glibcxx_SUBDIRS],[include libsupc++ src src/c++98 src/c++11 src/filesystem doc po testsuite python])
+ m4_define([glibcxx_SUBDIRS],[include libsupc++ src src/c++98 src/c++11 src/c++17 src/filesystem doc po testsuite python])
SUBDIRS='glibcxx_SUBDIRS'
# These need to be absolute paths, yet at the same time need to
dnl
AC_DEFUN([GLIBCXX_CONFIGURE_DOCBOOK], [
-AC_MSG_CHECKING([for docbook stylesheets for documentation creation])
-glibcxx_stylesheets=no
-if test x${XSLTPROC} = xyes && echo '<title/>' | xsltproc --noout --nonet --xinclude http://docbook.sourceforge.net/release/xsl-ns/current/xhtml-1_1/docbook.xsl - 2>/dev/null; then
- glibcxx_stylesheets=yes
-fi
-AC_MSG_RESULT($glibcxx_stylesheets)
+glibcxx_docbook_url=http://docbook.sourceforge.net/release/xsl-ns/current/
AC_MSG_CHECKING([for local stylesheet directory])
glibcxx_local_stylesheets=no
-if test x"$glibcxx_stylesheets" = x"yes"; then
- if test -d /usr/share/sgml/docbook/xsl-ns-stylesheets; then
- glibcxx_local_stylesheets=yes
- XSL_STYLE_DIR=/usr/share/sgml/docbook/xsl-ns-stylesheets
- fi
- if test -d /usr/share/xml/docbook/stylesheet/docbook-xsl-ns; then
- glibcxx_local_stylesheets=yes
- XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/docbook-xsl-ns
- fi
- if test -d /usr/share/xml/docbook/stylesheet/nwalsh5/current; then
- glibcxx_local_stylesheets=yes
- XSL_STYLE_DIR=/usr/share/xml/docbook/stylesheet/nwalsh5/current
- fi
+if test x${XMLCATALOG} = xyes && xsl_style_dir=`xmlcatalog "" $glibcxx_docbook_url 2>/dev/null`
+then
+ XSL_STYLE_DIR=`echo $xsl_style_dir | sed -n 's;^file://;;p'`
+ glibcxx_local_stylesheets=yes
+else
+ for dir in \
+ /usr/share/sgml/docbook/xsl-ns-stylesheets \
+ /usr/share/xml/docbook/stylesheet/docbook-xsl-ns \
+ /usr/share/xml/docbook/stylesheet/nwalsh5/current \
+ /usr/share/xml/docbook/stylesheet/nwalsh/current
+ do
+ if test -d $dir; then
+ glibcxx_local_stylesheets=yes
+ XSL_STYLE_DIR=$dir
+ break
+ fi
+ done
fi
AC_MSG_RESULT($glibcxx_local_stylesheets)
if test x"$glibcxx_local_stylesheets" = x"yes"; then
AC_SUBST(XSL_STYLE_DIR)
AC_MSG_NOTICE($XSL_STYLE_DIR)
+
+ AC_MSG_CHECKING([for docbook stylesheets for documentation creation])
+ glibcxx_stylesheets=no
+ if test x${XMLCATALOG} = xno || xmlcatalog "" $glibcxx_docbook_url/xhtml/docbook.xsl >/dev/null 2>&1; then
+ if test x${XSLTPROC} = xyes && echo '<title/>' | xsltproc --noout --nonet --xinclude $glibcxx_docbook_url/xhtml/docbook.xsl - 2>/dev/null; then
+ glibcxx_stylesheets=yes
+ fi
+ fi
+ AC_MSG_RESULT($glibcxx_stylesheets)
+
else
glibcxx_stylesheets=no
fi
dnl
-dnl Check whether "/dev/random" and "/dev/urandom" are available for the
+dnl Check whether "/dev/random" and "/dev/urandom" are available for
+dnl class std::random_device from C++ 2011 [rand.device], and
dnl random_device of "TR1" (Chapter 5.1, "Random number generation").
dnl
-AC_DEFUN([GLIBCXX_CHECK_RANDOM_TR1], [
+AC_DEFUN([GLIBCXX_CHECK_DEV_RANDOM], [
- AC_MSG_CHECKING([for "/dev/random" and "/dev/urandom" for TR1 random_device])
- AC_CACHE_VAL(glibcxx_cv_random_tr1, [
+ AC_MSG_CHECKING([for "/dev/random" and "/dev/urandom" for std::random_device])
+ AC_CACHE_VAL(glibcxx_cv_dev_random, [
if test -r /dev/random && test -r /dev/urandom; then
- ## For MSys environment the test above is detect as false-positive
- ## on mingw-targets. So disable it explicit for them.
+ ## For MSys environment the test above is detected as false-positive
+ ## on mingw-targets. So disable it explicitly for them.
case ${target_os} in
- *mingw*) glibcxx_cv_random_tr1=no ;;
- *) glibcxx_cv_random_tr1=yes ;;
+ *mingw*) glibcxx_cv_dev_random=no ;;
+ *) glibcxx_cv_dev_random=yes ;;
esac
else
- glibcxx_cv_random_tr1=no;
+ glibcxx_cv_dev_random=no;
fi
])
- AC_MSG_RESULT($glibcxx_cv_random_tr1)
+ AC_MSG_RESULT($glibcxx_cv_dev_random)
- if test x"$glibcxx_cv_random_tr1" = x"yes"; then
+ if test x"$glibcxx_cv_dev_random" = x"yes"; then
+ AC_DEFINE(_GLIBCXX_USE_DEV_RANDOM, 1,
+ [Define if /dev/random and /dev/urandom are available for
+ std::random_device.])
AC_DEFINE(_GLIBCXX_USE_RANDOM_TR1, 1,
[Define if /dev/random and /dev/urandom are available for
the random_device of TR1 (Chapter 5.1).])
dnl
AC_DEFUN([GLIBCXX_ENABLE_DEBUG], [
AC_MSG_CHECKING([for additional debug build])
+ skip_debug_build=
GLIBCXX_ENABLE(libstdcxx-debug,$1,,[build extra debug library])
- AC_MSG_RESULT($enable_libstdcxx_debug)
+ if test x$enable_libstdcxx_debug = xyes; then
+ if test -f $toplevel_builddir/../stage_final \
+ && test -f $toplevel_builddir/../stage_current; then
+ stage_final=`cat $toplevel_builddir/../stage_final`
+ stage_current=`cat $toplevel_builddir/../stage_current`
+ if test x$stage_current != x$stage_final ; then
+ skip_debug_build=" (skipped for bootstrap stage $stage_current)"
+ enable_libstdcxx_debug=no
+ fi
+ fi
+ fi
+ AC_MSG_RESULT($enable_libstdcxx_debug$skip_debug_build)
GLIBCXX_CONDITIONAL(GLIBCXX_BUILD_DEBUG, test $enable_libstdcxx_debug = yes)
])
])
+dnl
+dnl Set default lock policy for synchronizing shared_ptr reference counting.
+dnl
+dnl --with-libstdcxx-lock-policy=auto
+dnl Use atomic operations for shared_ptr reference counting only if
+dnl the default target supports atomic compare-and-swap.
+dnl --with-libstdcxx-lock-policy=atomic
+dnl Use atomic operations for shared_ptr reference counting.
+dnl --with-libstdcxx-lock-policy=mutex
+dnl Use a mutex to synchronize shared_ptr reference counting.
+dnl
+dnl This controls the value of __gnu_cxx::__default_lock_policy, which
+dnl determines how shared_ptr reference counts are synchronized.
+dnl The option "atomic" means that atomic operations should be used,
+dnl "mutex" means that a mutex will be used. The default option, "auto",
+dnl will check if the target supports the compiler-generated builtins
+dnl for atomic compare-and-swap operations for 2-byte and 4-byte integers,
+dnl and will use "atomic" if supported, "mutex" otherwise.
+dnl This option is ignored if the thread model used by GCC is "single",
+dnl as no synchronization is used at all in that case.
+dnl This option affects the library ABI (except in the "single" thread model).
+dnl
+dnl Defines _GLIBCXX_HAVE_ATOMIC_LOCK_POLICY to 1 if atomics should be used.
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_LOCK_POLICY], [
+
+ AC_ARG_WITH([libstdcxx-lock-policy],
+ AC_HELP_STRING([--with-libstdcxx-lock-policy={atomic,mutex,auto}],
+ [synchronization policy for shared_ptr reference counting [default=auto]]),
+ [libstdcxx_atomic_lock_policy=$withval],
+ [libstdcxx_atomic_lock_policy=auto])
+
+ case "$libstdcxx_atomic_lock_policy" in
+ atomic|mutex|auto) ;;
+ *) AC_MSG_ERROR([Invalid argument for --with-libstdcxx-lock-policy]) ;;
+ esac
+ AC_MSG_CHECKING([for lock policy for shared_ptr reference counts])
+
+ if test x"$libstdcxx_atomic_lock_policy" = x"auto"; then
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+
+ dnl Why do we care about 2-byte CAS on targets with 4-byte _Atomic_word?!
+ AC_TRY_COMPILE([
+ #if ! defined __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2
+ # error "No 2-byte compare-and-swap"
+ #elif ! defined __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
+ # error "No 4-byte compare-and-swap"
+ #endif
+ ],,
+ [libstdcxx_atomic_lock_policy=atomic],
+ [libstdcxx_atomic_lock_policy=mutex])
+ AC_LANG_RESTORE
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ fi
+
+ if test x"$libstdcxx_atomic_lock_policy" = x"atomic"; then
+ AC_MSG_RESULT(atomic)
+ AC_DEFINE(HAVE_ATOMIC_LOCK_POLICY,1,
+ [Defined if shared_ptr reference counting should use atomic operations.])
+ else
+ AC_MSG_RESULT(mutex)
+ fi
+
+])
dnl
dnl Allow visibility attributes to be used on namespaces, objects, etc.
fi
# For libtool versioning info, format is CURRENT:REVISION:AGE
-libtool_VERSION=6:26:0
+libtool_VERSION=6:27:0
# Everything parsed; figure out what files and settings to use.
case $enable_symvers in
AC_MSG_RESULT($ac_cv_x86_rdrand)
])
+dnl
+dnl Check whether rdseed is supported in the assembler.
+AC_DEFUN([GLIBCXX_CHECK_X86_RDSEED], [
+ AC_MSG_CHECKING([for rdseed support in assembler])
+ AC_CACHE_VAL(ac_cv_x86_rdseed, [
+ ac_cv_x86_rdseed=no
+ case "$target" in
+ i?86-*-* | \
+ x86_64-*-*)
+ AC_TRY_COMPILE(, [asm("rdseed %eax");],
+ [ac_cv_x86_rdseed=yes], [ac_cv_x86_rdseed=no])
+ esac
+ ])
+ if test $ac_cv_x86_rdseed = yes; then
+ AC_DEFINE(_GLIBCXX_X86_RDSEED, 1,
+ [ Defined if as can handle rdseed. ])
+ fi
+ AC_MSG_RESULT($ac_cv_x86_rdseed)
+])
+
dnl
dnl Check whether get_nprocs is available in <sys/sysinfo.h>, and define _GLIBCXX_USE_GET_NPROCS.
dnl
AC_DEFINE(_GLIBCXX_USE_UTIMENSAT, 1, [Define if utimensat and UTIME_OMIT are available in <sys/stat.h> and AT_FDCWD in <fcntl.h>.])
fi
AC_MSG_RESULT($glibcxx_cv_utimensat)
+dnl
+ AC_MSG_CHECKING([for utime])
+ AC_CACHE_VAL(glibcxx_cv_utime, [dnl
+ GCC_TRY_COMPILE_OR_LINK(
+ [
+ #include <utime.h>
+ ],
+ [
+ struct utimbuf t = { 1, 1 };
+ int i = utime("path", &t);
+ ],
+ [glibcxx_cv_utime=yes],
+ [glibcxx_cv_utime=no])
+ ])
+ if test $glibcxx_cv_utime = yes; then
+ AC_DEFINE(_GLIBCXX_USE_UTIME, 1, [Define if utime is available in <utime.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_utime)
+dnl
+ AC_MSG_CHECKING([for lstat])
+ AC_CACHE_VAL(glibcxx_cv_lstat, [dnl
+ GCC_TRY_COMPILE_OR_LINK(
+ [ #include <sys/stat.h> ],
+ [
+ struct stat st;
+ int i = lstat("path", &st);
+ ],
+ [glibcxx_cv_lstat=yes],
+ [glibcxx_cv_lstat=no])
+ ])
+ if test $glibcxx_cv_lstat = yes; then
+ AC_DEFINE(_GLIBCXX_USE_LSTAT, 1, [Define if lstat is available in <sys/stat.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_lstat)
dnl
AC_MSG_CHECKING([for struct stat.st_mtim.tv_nsec])
AC_CACHE_VAL(glibcxx_cv_st_mtim, [dnl
AC_DEFINE(HAVE_SYMLINK, 1, [Define if symlink is available in <unistd.h>.])
fi
AC_MSG_RESULT($glibcxx_cv_symlink)
+dnl
+ AC_MSG_CHECKING([for truncate])
+ AC_CACHE_VAL(glibcxx_cv_truncate, [dnl
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <unistd.h>],
+ [truncate("", 99);],
+ [glibcxx_cv_truncate=yes],
+ [glibcxx_cv_truncate=no])
+ ])
+ if test $glibcxx_cv_truncate = yes; then
+ AC_DEFINE(HAVE_TRUNCATE, 1, [Define if truncate is available in <unistd.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_truncate)
dnl
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_RESTORE
projects / gcc.git / blobdiff