dnl Substs:
dnl glibcxx_builddir (absolute path)
dnl glibcxx_srcdir (absolute path)
+dnl toplevel_builddir (absolute path)
dnl toplevel_srcdir (absolute path)
dnl with_cross_host
dnl with_newlib
# 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++ python src doc po testsuite])
+ m4_define([glibcxx_SUBDIRS],[include libsupc++ python src src/c++98 src/c++11 doc po testsuite])
SUBDIRS='glibcxx_SUBDIRS'
# These need to be absolute paths, yet at the same time need to
[\\/$]* | ?:[\\/]*) glibcxx_srcdir=${srcdir} ;;
*) glibcxx_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
esac
+ toplevel_builddir=${glibcxx_builddir}/..
toplevel_srcdir=${glibcxx_srcdir}/..
AC_SUBST(glibcxx_builddir)
AC_SUBST(glibcxx_srcdir)
+ AC_SUBST(toplevel_builddir)
AC_SUBST(toplevel_srcdir)
# We use these options to decide which functions to include. They are
## (Right now, this only matters for enable_wchar_t, but nothing prevents
## other macros from doing the same. This should be automated.) -pme
- # Check for C library flavor since Linux platforms use different configuration
- # directories depending on the C library in use.
+ # Check for C library flavor since GNU/Linux platforms use different
+ # configuration directories depending on the C library in use.
AC_EGREP_CPP([_using_uclibc], [
#include <stdio.h>
#if __UCLIBC__
dnl memory (mostly useful together with shared memory allocators, see PR
dnl libstdc++/16612 for details).
dnl
-dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING
-dnl --disable-fully-dynamic-string leaves _GLIBCXX_FULLY_DYNAMIC_STRING undefined
+dnl --enable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 1
+dnl --disable-fully-dynamic-string defines _GLIBCXX_FULLY_DYNAMIC_STRING to 0
+dnl otherwise undefined
dnl + Usage: GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING[(DEFAULT)]
dnl Where DEFAULT is either `yes' or `no'.
dnl
AC_DEFUN([GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING], [
GLIBCXX_ENABLE(fully-dynamic-string,$1,,[do not put empty strings in per-process static memory])
if test $enable_fully_dynamic_string = yes; then
- AC_DEFINE(_GLIBCXX_FULLY_DYNAMIC_STRING, 1,
- [Define if a fully dynamic basic_string is wanted.])
+ enable_fully_dynamic_string_def=1
+ else
+ enable_fully_dynamic_string_def=0
fi
+ AC_DEFINE_UNQUOTED([_GLIBCXX_FULLY_DYNAMIC_STRING], [${enable_fully_dynamic_string_def}],
+ [Define to 1 if a fully dynamic basic_string is wanted, 0 to disable, undefined for platform defaults])
])
dnl
-dnl Does any necessary configuration of the documentation directory.
+dnl Does any necessary configuration for docbook in the docs directory.
dnl
dnl XSLTPROC must be set before this
dnl
dnl
AC_DEFUN([GLIBCXX_CONFIGURE_DOCBOOK], [
-AC_MSG_CHECKING([for stylesheets used in generation of documentation])
+AC_MSG_CHECKING([for docbook stylesheets for documentation creation])
glibcxx_stylesheets=no
if test x${XSLTPROC} = xyes && echo '<title/>' | xsltproc --noout --nonet --xinclude http://docbook.sourceforge.net/release/xsl-ns/current/xhtml-1_1/docbook.xsl - 2>/dev/null; then
glibcxx_stylesheets=yes
else
glibcxx_stylesheets=no
fi
+
+# Check for epub3 dependencies.
+AC_MSG_CHECKING([for epub3 stylesheets for documentation creation])
+glibcxx_epub_stylesheets=no
+if test x"$glibcxx_local_stylesheets" = x"yes"; then
+ if test -f "$XSL_STYLE_DIR/epub3/chunk.xsl"; then
+ glibcxx_epub_stylesheets=yes
+ fi
+fi
+AC_MSG_RESULT($glibcxx_epub_stylesheets)
+AM_CONDITIONAL(BUILD_EPUB, test x"$glibcxx_epub_stylesheets" = x"yes")
+
])
fi
# Stuff in the actual top level. Currently only used by libsupc++ to
- # get unwind* headers from the gcc dir.
- #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc -I$(toplevel_srcdir)/include'
- TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/gcc'
+ # get unwind* headers from the libgcc dir.
+ #TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc -I$(toplevel_srcdir)/include'
+ TOPLEVEL_INCLUDES='-I$(toplevel_srcdir)/libgcc'
# Now, export this to all the little Makefiles....
AC_SUBST(GLIBCXX_INCLUDES)
# OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc
AC_SUBST(OPTIMIZE_CXXFLAGS)
- WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual'
+ WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi'
AC_SUBST(WARN_FLAGS)
])
dnl --disable-libstdcxx-time
dnl disables the checks completely
dnl
+dnl N.B. Darwin provides nanosleep but doesn't support the whole POSIX
+dnl Timers option, so doesn't define _POSIX_TIMERS. Because the test
+dnl below fails Darwin unconditionally defines _GLIBCXX_USE_NANOSLEEP in
+dnl os_defines.h and also defines _GLIBCXX_USE_SCHED_YIELD.
+dnl
AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [
AC_MSG_CHECKING([for clock_gettime, nanosleep and sched_yield])
# Check for the existence of the <stdbool.h> header.
AC_CHECK_HEADERS(stdbool.h)
+ # Check for the existence of the <stdalign.h> header.
+ AC_CHECK_HEADERS(stdalign.h)
+
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_RESTORE
])
])
dnl
+dnl Check whether required C++ overloads are present in <math.h>.
+dnl
+
+AC_DEFUN([GLIBCXX_CHECK_MATH_PROTO], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+
+ case "$host" in
+ *-*-solaris2.*)
+ # Solaris 8 FCS only had an overload for double std::abs(double) in
+ # <iso/math_iso.h>. Patches 111721-04 (SPARC) and 112757-01 (x86)
+ # introduced the full set also found from Solaris 9 onwards.
+ AC_MSG_CHECKING([for float std::abs(float) overload])
+ AC_CACHE_VAL(glibcxx_cv_abs_float, [
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+ [#include <math.h>
+ namespace std {
+ inline float abs(float __x)
+ { return __builtin_fabsf(__x); }
+ }
+ ])],
+ [glibcxx_cv_abs_float=no],
+ [glibcxx_cv_abs_float=yes]
+ )])
+
+ # autoheader cannot handle indented templates.
+ AH_VERBATIM([__CORRECT_ISO_CPP_MATH_H_PROTO1],
+ [/* Define if all C++ overloads are available in <math.h>. */
+#if __cplusplus >= 199711L
+#undef __CORRECT_ISO_CPP_MATH_H_PROTO1
+#endif])
+ AH_VERBATIM([__CORRECT_ISO_CPP_MATH_H_PROTO2],
+ [/* Define if only double std::abs(double) is available in <math.h>. */
+#if __cplusplus >= 199711L
+#undef __CORRECT_ISO_CPP_MATH_H_PROTO2
+#endif])
+
+ if test $glibcxx_cv_abs_float = yes; then
+ AC_DEFINE(__CORRECT_ISO_CPP_MATH_H_PROTO1)
+ else
+ AC_DEFINE(__CORRECT_ISO_CPP_MATH_H_PROTO2)
+ fi
+ AC_MSG_RESULT($glibcxx_cv_abs_float)
+ ;;
+ esac
+
+ AC_LANG_RESTORE
+])
+
+dnl
+dnl Check whether required C++ overloads are present in <stdlib.h>.
+dnl
+
+AC_DEFUN([GLIBCXX_CHECK_STDLIB_PROTO], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+
+ case "$host" in
+ *-*-solaris2.*)
+ # Solaris 8 FCS lacked the overloads for long std::abs(long) and
+ # ldiv_t std::div(long, long) in <iso/stdlib_iso.h>. Patches 109607-02
+ # (SPARC) and 109608-02 (x86) introduced them.
+ AC_MSG_CHECKING([for long std::abs(long) overload])
+ AC_CACHE_VAL(glibcxx_cv_abs_long, [
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+ [#include <stdlib.h>
+ namespace std {
+ inline long
+ abs(long __i) { return labs(__i); }
+ }
+ ])],
+ [glibcxx_cv_abs_long=no],
+ [glibcxx_cv_abs_long=yes]
+ )])
+
+ # autoheader cannot handle indented templates.
+ AH_VERBATIM([__CORRECT_ISO_CPP_STDLIB_H_PROTO],
+ [/* Define if all C++ overloads are available in <stdlib.h>. */
+#if __cplusplus >= 199711L
+#undef __CORRECT_ISO_CPP_STDLIB_H_PROTO
+#endif])
+ if test $glibcxx_cv_abs_long = yes; then
+ AC_DEFINE(__CORRECT_ISO_CPP_STDLIB_H_PROTO, 1)
+ fi
+ AC_MSG_RESULT($glibcxx_cv_abs_long)
+ ;;
+ esac
+
+ AC_LANG_RESTORE
+])
+
+dnl
+dnl Check whether required C++ overloads are present in <stdio.h>.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_STDIO_PROTO], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+
+ AC_MSG_CHECKING([for gets declaration])
+ AC_CACHE_VAL(glibcxx_cv_gets, [
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+ [#include <stdio.h>
+ namespace test
+ {
+ using ::gets;
+ }
+ ])],
+ [glibcxx_cv_gets=yes],
+ [glibcxx_cv_gets=no]
+ )])
+
+ if test $glibcxx_cv_gets = yes; then
+ AC_DEFINE(HAVE_GETS, 1, [Define if gets is available in <stdio.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_gets)
+
+ AC_LANG_RESTORE
+])
+
+dnl
dnl Check whether macros, etc are present for <system_error>
dnl
AC_DEFUN([GLIBCXX_CHECK_SYSTEM_ERROR], [
m4_pushdef([n_syserr], [1])dnl
m4_foreach([syserr], [EOWNERDEAD, ENOTRECOVERABLE, ENOLINK, EPROTO, ENODATA,
ENOSR, ENOSTR, ETIME, EBADMSG, ECANCELED,
- EOVERFLOW, ENOTSUP, EIDRM, ETXTBSY],
+ EOVERFLOW, ENOTSUP, EIDRM, ETXTBSY,
+ ECHILD, ENOSPC, EPERM,
+ ETIMEDOUT, EWOULDBLOCK],
[m4_pushdef([SYSERR], m4_toupper(syserr))dnl
AC_MSG_CHECKING([for syserr])
AC_CACHE_VAL([glibcxx_cv_system_error[]n_syserr], [
])
dnl
+dnl Check for GNU 128-bit integer and floating point types.
+dnl
+dnl Note: also checks that the types aren't standard types.
+dnl
+dnl Defines:
+dnl _GLIBCXX_USE_INT128
+dnl _GLIBCXX_USE_FLOAT128
+dnl
+AC_DEFUN([GLIBCXX_ENABLE_INT128_FLOAT128], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+
+ # Fake what AC_TRY_COMPILE does, without linking as this is
+ # unnecessary for this test.
+
+ cat > conftest.$ac_ext << EOF
+[#]line __oline__ "configure"
+template<typename T1, typename T2>
+ struct same
+ { typedef T2 type; };
+
+template<typename T>
+ struct same<T, T>;
+
+int main()
+{
+ typename same<long, __int128>::type i1;
+ typename same<long long, __int128>::type i2;
+}
+EOF
+
+ AC_MSG_CHECKING([for __int128])
+ if AC_TRY_EVAL(ac_compile); then
+ AC_DEFINE(_GLIBCXX_USE_INT128, 1,
+ [Define if __int128 is supported on this host.])
+ enable_int128=yes
+ else
+ enable_int128=no
+ fi
+ AC_MSG_RESULT($enable_int128)
+ rm -f conftest*
+
+ cat > conftest.$ac_ext << EOF
+[#]line __oline__ "configure"
+template<typename T1, typename T2>
+ struct same
+ { typedef T2 type; };
+
+template<typename T>
+ struct same<T, T>;
+
+int main()
+{
+ typename same<double, __float128>::type f1;
+ typename same<long double, __float128>::type f2;
+}
+EOF
+
+ AC_MSG_CHECKING([for __float128])
+ if AC_TRY_EVAL(ac_compile); then
+ AC_DEFINE(_GLIBCXX_USE_FLOAT128, 1,
+ [Define if __float128 is supported on this host.])
+ enable_float128=yes
+ else
+ enable_float128=no
+ fi
+ AC_MSG_RESULT($enable_float128)
+ rm -f conftest*
+
+ AC_LANG_RESTORE
+])
+
+dnl
dnl Check for template specializations for the 'wchar_t' type.
dnl
dnl --enable-wchar_t defines _GLIBCXX_USE_WCHAR_T
dnl
dnl Check for atomic builtins.
dnl See:
-dnl http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html#Atomic-Builtins
+dnl http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html
dnl
dnl This checks to see if the host supports the compiler-generated
dnl builtins for atomic operations for various integral sizes. Note, this
dnl Note:
dnl libgomp and libgfortran use a link test, see CHECK_SYNC_FETCH_AND_ADD.
dnl
-dnl Defines:
-dnl _GLIBCXX_ATOMIC_BUILTINS_1
-dnl _GLIBCXX_ATOMIC_BUILTINS_2
-dnl _GLIBCXX_ATOMIC_BUILTINS_4
-dnl _GLIBCXX_ATOMIC_BUILTINS_8
-dnl
AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
[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();],
+ atomic_type c3(0);
+ __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
+ __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
+ __ATOMIC_RELAXED);
+ __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
+ __atomic_load_n(&c1, __ATOMIC_RELAXED);
+ ],
[glibcxx_cv_atomic_bool=yes],
[glibcxx_cv_atomic_bool=no])
])
- if test $glibcxx_cv_atomic_bool = yes; then
- AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1,
- [Define if builtin atomic operations for bool are supported on this host.])
- fi
AC_MSG_RESULT($glibcxx_cv_atomic_bool)
AC_MSG_CHECKING([for atomic builtins for short])
[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();],
+ atomic_type c3(0);
+ __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
+ __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
+ __ATOMIC_RELAXED);
+ __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
+ __atomic_load_n(&c1, __ATOMIC_RELAXED);
+ ],
[glibcxx_cv_atomic_short=yes],
[glibcxx_cv_atomic_short=no])
])
- if test $glibcxx_cv_atomic_short = yes; then
- AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_2, 1,
- [Define if builtin atomic operations for short are supported on this host.])
- fi
AC_MSG_RESULT($glibcxx_cv_atomic_short)
AC_MSG_CHECKING([for atomic builtins for 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();],
+ atomic_type c3(0);
+ __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
+ __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
+ __ATOMIC_RELAXED);
+ __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
+ __atomic_load_n(&c1, __ATOMIC_RELAXED);
+ ],
[glibcxx_cv_atomic_int=yes],
[glibcxx_cv_atomic_int=no])
])
- if test $glibcxx_cv_atomic_int = yes; then
- AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1,
- [Define if builtin atomic operations for int are supported on this host.])
- fi
AC_MSG_RESULT($glibcxx_cv_atomic_int)
AC_MSG_CHECKING([for atomic builtins for long long])
[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();],
+ atomic_type c3(0);
+ __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
+ __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
+ __ATOMIC_RELAXED);
+ __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
+ __atomic_load_n(&c1, __ATOMIC_RELAXED);
+ ],
[glibcxx_cv_atomic_long_long=yes],
[glibcxx_cv_atomic_long_long=no])
])
- if test $glibcxx_cv_atomic_long_long = yes; then
- AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_8, 1,
- [Define if builtin atomic operations for long long are supported on this host.])
- fi
AC_MSG_RESULT($glibcxx_cv_atomic_long_long)
else
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();
+ atomic_type c3(0);
+ __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
+ __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
+ __ATOMIC_RELAXED);
+ __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
+ __atomic_load_n(&c1, __ATOMIC_RELAXED);
+
return 0;
}
EOF
AC_MSG_CHECKING([for atomic builtins for bool])
if AC_TRY_EVAL(ac_compile); then
- if grep __sync_ conftest.s >/dev/null 2>&1 ; then
+ if grep __atomic_ conftest.s >/dev/null 2>&1 ; then
glibcxx_cv_atomic_bool=no
else
- AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_1, 1,
- [Define if builtin atomic operations for bool are supported on this host.])
glibcxx_cv_atomic_bool=yes
fi
fi
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();
+ atomic_type c3(0);
+ __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
+ __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
+ __ATOMIC_RELAXED);
+ __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
+ __atomic_load_n(&c1, __ATOMIC_RELAXED);
+
return 0;
}
EOF
AC_MSG_CHECKING([for atomic builtins for short])
if AC_TRY_EVAL(ac_compile); then
- if grep __sync_ conftest.s >/dev/null 2>&1 ; then
+ if grep __atomic_ conftest.s >/dev/null 2>&1 ; then
glibcxx_cv_atomic_short=no
else
- AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_2, 1,
- [Define if builtin atomic operations for short are supported on this host.])
glibcxx_cv_atomic_short=yes
fi
fi
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();
+ atomic_type c3(0);
+ __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
+ __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
+ __ATOMIC_RELAXED);
+ __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
+ __atomic_load_n(&c1, __ATOMIC_RELAXED);
+
return 0;
}
EOF
AC_MSG_CHECKING([for atomic builtins for int])
if AC_TRY_EVAL(ac_compile); then
- if grep __sync_ conftest.s >/dev/null 2>&1 ; then
+ if grep __atomic_ conftest.s >/dev/null 2>&1 ; then
glibcxx_cv_atomic_int=no
else
- AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_4, 1,
- [Define if builtin atomic operations for int are supported on this host.])
glibcxx_cv_atomic_int=yes
fi
fi
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();
+ atomic_type c3(0);
+ __atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
+ __atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
+ __ATOMIC_RELAXED);
+ __atomic_test_and_set(&c1, __ATOMIC_RELAXED);
+ __atomic_load_n(&c1, __ATOMIC_RELAXED);
+
return 0;
}
EOF
AC_MSG_CHECKING([for atomic builtins for long long])
if AC_TRY_EVAL(ac_compile); then
- if grep __sync_ conftest.s >/dev/null 2>&1 ; then
+ if grep __atomic_ conftest.s >/dev/null 2>&1 ; then
glibcxx_cv_atomic_long_long=no
else
- AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS_8, 1,
- [Define if builtin atomic operations for long long are supported on this host.])
glibcxx_cv_atomic_long_long=yes
fi
fi
CXXFLAGS="$old_CXXFLAGS"
AC_LANG_RESTORE
- # Set atomicity_dir to builtins if either of above tests pass.
- if test $glibcxx_cv_atomic_int = yes || test $glibcxx_cv_atomic_bool = yes ; then
+ # Set atomicity_dir to builtins if all but the long long test above passes.
+ if test $glibcxx_cv_atomic_bool = yes \
+ && test $glibcxx_cv_atomic_short = yes \
+ && test $glibcxx_cv_atomic_int = yes; then
+ AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1,
+ [Define if the compiler supports C++11 atomics.])
atomicity_dir=cpu/generic/atomicity_builtins
fi
dnl
dnl Allow visibility attributes to be used on namespaces, objects, etc.
dnl
-dnl --enable-visibility enables attempt to use visibility attributes.
-dnl --disable-visibility turns off all use of visibility attributes.
-dnl + Usage: GLIBCXX_ENABLE_VISIBILITY[(DEFAULT)]
+dnl --enable-libstdcxx-visibility enables attempt to use visibility attributes.
+dnl --disable-libstdcxx-visibility turns off all use of visibility attributes.
+dnl + Usage: GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY[(DEFAULT)]
dnl Where DEFAULT is 'yes'.
dnl
-AC_DEFUN([GLIBCXX_ENABLE_VISIBILITY], [
-GLIBCXX_ENABLE(visibility,$1,,[enables visibility safe usage])
+AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_VISIBILITY], [
+GLIBCXX_ENABLE(libstdcxx-visibility,$1,,[enables visibility safe usage])
-if test x$enable_visibility = xyes ; then
+if test x$enable_libstdcxx_visibility = xyes ; then
dnl all hail libgfortran
dnl Check whether the target supports hidden visibility.
AC_CACHE_CHECK([whether the target supports hidden visibility],
glibcxx_cv_have_attribute_visibility=no)
CFLAGS="$save_CFLAGS"])
if test $glibcxx_cv_have_attribute_visibility = no; then
- enable_visibility=no
+ enable_libstdcxx_visibility=no
fi
fi
-GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_visibility = yes)
-AC_MSG_NOTICE([visibility supported: $enable_visibility])
+GLIBCXX_CONDITIONAL(ENABLE_VISIBILITY, test $enable_libstdcxx_visibility = yes)
+AC_MSG_NOTICE([visibility supported: $enable_libstdcxx_visibility])
])
dnl Add version tags to symbols in shared library (or not), additionally
dnl marking other symbols as private/local (or not).
dnl
+dnl Sets libtool_VERSION, and determines shared library SONAME.
+dnl
+dnl This depends on GLIBCXX CHECK_LINKER_FEATURES, but without it assumes no.
+dnl
dnl --enable-symvers=style adds a version script to the linker call when
dnl creating the shared library. The choice of version script is
dnl controlled by 'style'.
dnl --disable-symvers does not.
+dnl
dnl + Usage: GLIBCXX_ENABLE_SYMVERS[(DEFAULT)]
dnl Where DEFAULT is either 'yes' or 'no'. Passing `yes' tries to
dnl choose a default style based on linker characteristics. Passing
fi
fi
-# Everything parsed; figure out what file to use.
+# For libtool versioning info, format is CURRENT:REVISION:AGE
+libtool_VERSION=6:17:0
+
+# Everything parsed; figure out what files and settings to use.
case $enable_symvers in
no)
SYMVER_FILE=config/abi/pre/none.ver
[Define to use GNU versioning in the shared library.])
;;
gnu-versioned-namespace)
+ libtool_VERSION=7:0:0
SYMVER_FILE=config/abi/pre/gnu-versioned-namespace.ver
AC_DEFINE(_GLIBCXX_SYMVER_GNU_NAMESPACE, 1,
[Define to use GNU namespace versioning in the shared library.])
# The Solaris 2 runtime linker doesn't support the GNU extension of
# binding the same symbol to different versions
solaris2*)
- symvers_renaming=no ;;
+ ;;
# Other platforms with GNU symbol versioning (GNU/Linux, more?) do.
*)
AC_DEFINE(HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT, 1,
[Define to 1 if the target runtime linker supports binding the same symbol to different versions.])
- symvers_renaming=yes ;;
+ ;;
esac
-else
- symvers_renaming=no
fi
-GLIBCXX_CONDITIONAL(ENABLE_SYMVERS_SOL2, test $symvers_renaming = no)
# Now, set up compatibility support, if any.
# In addition, need this to deal with std::size_t mangling in
dnl namespace are complex and fragile enough as it is). We must also
dnl add a relative path so that -I- is supported properly.
dnl
-dnl Substs:
-dnl glibcxx_thread_h
-dnl
-dnl Defines:
-dnl HAVE_GTHR_DEFAULT
-dnl
AC_DEFUN([GLIBCXX_ENABLE_THREADS], [
AC_MSG_CHECKING([for thread model used by GCC])
target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
AC_MSG_RESULT([$target_thread_file])
-
- if test $target_thread_file != single; then
- AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
- [Define if gthr-default.h exists
- (meaning that threading support is enabled).])
- fi
-
- glibcxx_thread_h=gthr-$target_thread_file.h
-
- dnl Check for __GTHREADS define.
- gthread_file=${toplevel_srcdir}/gcc/${glibcxx_thread_h}
- if grep __GTHREADS $gthread_file >/dev/null 2>&1 ; then
- enable_thread=yes
- else
- enable_thread=no
- fi
-
- AC_SUBST(glibcxx_thread_h)
])
dnl required by the c++0x thread library. Conforming gthread
dnl implementations can define __GTHREADS_CXX0X to enable use with c++0x.
dnl
+dnl GLIBCXX_ENABLE_SYMVERS must be done before this.
+dnl
AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [
+ GLIBCXX_ENABLE(libstdcxx-threads,auto,,[enable C++11 threads support])
+
+ if test x$enable_libstdcxx_threads = xauto ||
+ test x$enable_libstdcxx_threads = xyes; then
+
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
ac_save_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS="$CXXFLAGS -fno-exceptions -I${toplevel_srcdir}/gcc"
+ CXXFLAGS="$CXXFLAGS -fno-exceptions \
+ -I${toplevel_srcdir}/libgcc -I${toplevel_builddir}/libgcc"
- AC_MSG_CHECKING([check whether it can be safely assumed that mutex_timedlock is available])
+ target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
+ case $target_thread_file in
+ posix)
+ CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS"
+ esac
+
+ AC_MSG_CHECKING([whether it can be safely assumed that mutex_timedlock is available])
AC_TRY_COMPILE([#include <unistd.h>],
[
- #if !defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS < 0
+ // In case of POSIX threads check _POSIX_TIMEOUTS.
+ #if (defined(_PTHREADS) \
+ && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0))
#error
#endif
], [ac_gthread_use_mutex_timedlock=1], [ac_gthread_use_mutex_timedlock=0])
AC_DEFINE_UNQUOTED(_GTHREAD_USE_MUTEX_TIMEDLOCK, $ac_gthread_use_mutex_timedlock,
- [Define to 1 if mutex_timedlock is available.])
+ [Define to 1 if mutex_timedlock is available.])
if test $ac_gthread_use_mutex_timedlock = 1 ; then res_mutex_timedlock=yes ;
else res_mutex_timedlock=no ; fi
AC_MSG_RESULT([$res_mutex_timedlock])
- target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
- case $target_thread_file in
- posix)
- CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS"
- esac
-
AC_MSG_CHECKING([for gthreads library])
- AC_TRY_COMPILE([
- #include "gthr.h"
- #include <unistd.h>
- ],
+ 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])
+ ], [case $target_os in
+ # gthreads support breaks symbol versioning on Solaris 8/9 (PR
+ # libstdc++/52189).
+ solaris2.[[89]]*)
+ if test x$enable_symvers = xno; then
+ ac_has_gthreads=yes
+ elif test x$enable_libstdcxx_threads = xyes; then
+ AC_MSG_WARN([You have requested C++11 threads support, but])
+ AC_MSG_WARN([this breaks symbol versioning.])
+ ac_has_gthreads=yes
+ else
+ ac_has_gthreads=no
+ fi
+ ;;
+ *)
+ ac_has_gthreads=yes
+ ;;
+ esac],
+ [ac_has_gthreads=no])
+ else
+ ac_has_gthreads=no
+ fi
AC_MSG_RESULT([$ac_has_gthreads])
AC_LANG_RESTORE
])
+dnl
+dnl Check whether sysconf(_SC_NPROC_ONLN) is available in <unistd.h>, and define _GLIBCXX_USE_SC_NPROC_ONLN.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_SC_NPROC_ONLN], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-exceptions"
+
+ AC_MSG_CHECKING([for _SC_NPROC_ONLN])
+ AC_CACHE_VAL(glibcxx_cv_SC_NPROC_ONLN, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <unistd.h>],
+ [int n = sysconf(_SC_NPROC_ONLN);],
+ [glibcxx_cv_SC_NPROC_ONLN=yes],
+ [glibcxx_cv_SC_NPROC_ONLN=no])
+ ])
+ if test $glibcxx_cv_SC_NPROC_ONLN = yes; then
+ AC_DEFINE(_GLIBCXX_USE_SC_NPROC_ONLN, 1, [Define if _SC_NPROC_ONLN is available in <unistd.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_SC_NPROC_ONLN)
+
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+])
+
+dnl
+dnl Check whether pthread_num_processors_np is available in <pthread.h>, and define _GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-exceptions"
+
+ AC_MSG_CHECKING([for pthreads_num_processors_np])
+ AC_CACHE_VAL(glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [#include <pthread.h>],
+ [int n = pthread_num_processors_np();],
+ [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=yes],
+ [glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP=no])
+ ])
+ if test $glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP = yes; then
+ AC_DEFINE(_GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP, 1, [Define if pthreads_num_processors_np is available in <pthread.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_PTHREADS_NUM_PROCESSORS_NP)
+
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+])
+
+dnl
+dnl Check whether sysctl is available in <pthread.h>, and define _GLIBCXX_USE_SYSCTL_HW_NCPU.
+dnl
+AC_DEFUN([GLIBCXX_CHECK_SYSCTL_HW_NCPU], [
+
+ AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-exceptions"
+
+ AC_MSG_CHECKING([for hw.ncpu sysctl])
+ AC_CACHE_VAL(glibcxx_cv_SYSCTL_HW_NCPU, [
+ GCC_TRY_COMPILE_OR_LINK(
+ [
+ #include <stddef.h>
+ #include <sys/sysctl.h>
+ ],
+ [
+ int count;
+ size_t size = sizeof(count);
+ int mib[] = { CTL_HW, HW_NCPU };
+ sysctl(mib, 2, &count, &size, NULL, 0);
+ ],
+ [glibcxx_cv_SYSCTL_HW_NCPU=yes],
+ [glibcxx_cv_SYSCTL_HW_NCPU=no])
+ ])
+ if test $glibcxx_cv_SYSCTL_HW_NCPU = yes; then
+ AC_DEFINE(_GLIBCXX_USE_SYSCTL_HW_NCPU, 1, [Define if sysctl(), CTL_HW and HW_NCPU are available in <sys/sysctl.h>.])
+ fi
+ AC_MSG_RESULT($glibcxx_cv_SYSCTL_HW_NCPU)
+
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ AC_LANG_RESTORE
+])
+
+dnl
+dnl Check to see if python pretty printing can be activated.
+dnl
+dnl --with-python-dir=dir
+dnl installs directory into $prefix/dir
+AC_DEFUN([GLIBCXX_ENABLE_PYTHON], [
+
+AC_MSG_CHECKING([for custom python install directory])
+AC_ARG_WITH([python-dir],
+ AS_HELP_STRING([--with-python-dir],
+ [the location to install Python modules. This path is relative starting from the prefix.]),
+ [with_python_dir=$withval], [with_python_dir="no"])
+AC_MSG_RESULT(${with_python_dir})
+
+# Needed for installing Python modules during make install.
+python_mod_dir="${with_python_dir}"
+AC_SUBST(python_mod_dir)
+GLIBCXX_CONDITIONAL(ENABLE_PYTHONDIR, test $python_mod_dir != no)
+])
+
+dnl
+dnl Check to see if -Werror is disabled.
+dnl
+dnl --enable-werror/--disable-werror
+AC_DEFUN([GLIBCXX_ENABLE_WERROR], [
+ AC_MSG_CHECKING([for -Werror])
+ GLIBCXX_ENABLE(werror,$1,,[turns on -Werror])
+ AC_MSG_RESULT($enable_werror)
+ GLIBCXX_CONDITIONAL(ENABLE_WERROR, test $enable_werror = yes)
+])
+
# Macros from the top-level gcc directory.
m4_include([../config/gc++filt.m4])
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