0f3e711eef
libstdc++-v3/ * configure.ac (--enable-linux-futex): Add new configure option. (HAVE_LINUX_FUTEX): New AC_DEFINE. * Makefile.in: Rebuilt. * aclocal.m4: Rebuilt. * configure: Rebuilt. * config.h.in: Rebuilt. * config/cpu/generic/cxxabi_tweaks.h (_GLIBCXX_GUARD_BIT, _GLIBCXX_GUARD_PENDING_BIT, _GLIBCXX_GUARD_WAITING_BIT): Define. * config/cpu/arm/cxxabi_tweaks.h (_GLIBCXX_GUARD_BIT, _GLIBCXX_GUARD_PENDING_BIT, _GLIBCXX_GUARD_WAITING_BIT): Define. * libsupc++/guard.cc: Include climits and syscall.h. (_GLIBCXX_USE_FUTEX): Define if futex syscall and atomic builtins are supported. (_GLIBCXX_FUTEX_WAIT, _GLIBCXX_FUTEX_WAKE): Likewise. (__guard_test_bit): New static inline. (__cxa_guard_acquire, __cxa_guard_release, __cxa_guard_abort): Use atomic builtins and futex syscall if _GLIBCXX_USE_FUTEX. config/ * futex.m4: New file. libgomp/ * configure.ac: Move futex checking into ../config/futex.m4. * configure: Rebuilt. * aclocal.m4: Rebuilt. * Makefile.in: Rebuilt. * configure.tgt: Rename have_tls to gcc_cv_have_tls to match 2007-10-15 ../config/tls.m4 change. From-SVN: r131399
114 lines
2.6 KiB
Plaintext
114 lines
2.6 KiB
Plaintext
# This is the target specific configuration file. This is invoked by the
|
|
# autoconf generated configure script. Putting it in a separate shell file
|
|
# lets us skip running autoconf when modifying target specific information.
|
|
|
|
# This file switches on the shell variable ${target}, and sets the
|
|
# following shell variables:
|
|
# config_path An ordered list of directories to search for
|
|
# sources and headers. This is relative to the
|
|
# config subdirectory of the source tree.
|
|
# XCFLAGS Add extra compile flags to use.
|
|
# XLDFLAGS Add extra link flags to use.
|
|
|
|
# Optimize TLS usage by avoiding the overhead of dynamic allocation.
|
|
if test $gcc_cv_have_tls = yes ; then
|
|
case "${target}" in
|
|
|
|
*-*-linux*)
|
|
XCFLAGS="${XCFLAGS} -ftls-model=initial-exec"
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
# Since we require POSIX threads, assume a POSIX system by default.
|
|
config_path="posix"
|
|
|
|
# Check for futex enabled all at once.
|
|
if test $enable_linux_futex = yes; then
|
|
case "${target}" in
|
|
|
|
alpha*-*-linux*)
|
|
config_path="linux/alpha linux posix"
|
|
;;
|
|
|
|
ia64*-*-linux*)
|
|
config_path="linux/ia64 linux posix"
|
|
;;
|
|
|
|
powerpc*-*-linux*)
|
|
config_path="linux/powerpc linux posix"
|
|
;;
|
|
|
|
s390*-*-linux*)
|
|
config_path="linux/s390 linux posix"
|
|
;;
|
|
|
|
# Note that bare i386 is not included here. We need cmpxchg.
|
|
i[456]86-*-linux*)
|
|
config_path="linux/x86 linux posix"
|
|
case " ${CC} ${CFLAGS} " in
|
|
*" -m64 "*)
|
|
;;
|
|
*)
|
|
if test -z "$with_arch"; then
|
|
XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}"
|
|
fi
|
|
esac
|
|
;;
|
|
|
|
# Similar jiggery-pokery for x86_64 multilibs, except here we
|
|
# can't rely on the --with-arch configure option, since that
|
|
# applies to the 64-bit side.
|
|
x86_64-*-linux*)
|
|
config_path="linux/x86 linux posix"
|
|
case " ${CC} ${CFLAGS} " in
|
|
*" -m32 "*)
|
|
XCFLAGS="${XCFLAGS} -march=i486 -mtune=i686"
|
|
;;
|
|
esac
|
|
;;
|
|
|
|
# Note that sparcv7 and sparcv8 is not included here. We need cas.
|
|
sparcv9-*-linux* | sparc64-*-linux*)
|
|
echo "int i;" > conftestx.c
|
|
if ${CC} ${CFLAGS} -c -o conftestx.o conftestx.c > /dev/null 2>&1; then
|
|
config_path="linux/sparc linux posix"
|
|
case "`/usr/bin/file conftestx.o`" in
|
|
*32-bit*)
|
|
case " ${CC} ${CFLAGS}" in
|
|
*" -mcpu=ultrasparc"*)
|
|
;;
|
|
*)
|
|
XCFLAGS="${XCFLAGS} -mcpu=v9"
|
|
;;
|
|
esac
|
|
;;
|
|
esac
|
|
fi
|
|
rm -f conftestx.c conftestx.o
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
# Other system configury
|
|
case "${target}" in
|
|
|
|
*-*-hpux11*)
|
|
# HPUX v11.x requires -lrt to resolve sem_init in libgomp.la
|
|
XLDFLAGS="${XLDFLAGS} -lrt"
|
|
;;
|
|
|
|
*-*-mingw32*)
|
|
config_path="mingw32 posix"
|
|
;;
|
|
|
|
*-*-solaris2.[56]*)
|
|
config_path="posix95 posix"
|
|
XLDFLAGS="${XLDFLAGS} -lposix4"
|
|
;;
|
|
|
|
*)
|
|
;;
|
|
|
|
esac
|