diff options
author | Benjamin Kosnik <bkoz@redhat.com> | 2006-07-14 22:41:43 +0000 |
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committer | Benjamin Kosnik <bkoz@gcc.gnu.org> | 2006-07-14 22:41:43 +0000 |
commit | 701a3eeeef11809f8fcdc2415d846521cde329f3 (patch) | |
tree | 255b82cf13b2db9f241b86c199799552ea061f57 | |
parent | 8fce9db0148391e5bc6853c413867a9810c68e75 (diff) | |
download | gcc-701a3eeeef11809f8fcdc2415d846521cde329f3.zip gcc-701a3eeeef11809f8fcdc2415d846521cde329f3.tar.gz gcc-701a3eeeef11809f8fcdc2415d846521cde329f3.tar.bz2 |
acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): New.
2006-07-14 Benjamin Kosnik <bkoz@redhat.com>
* acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): New.
* configure.ac: Use it.
* configure: Regenerated.
* config.h.in: Regenerated.
* configure.host: Simplify.
* include/bits/atomicity.h: Adjust macros.
* config/cpu/generic/atomicity.h: Move...
* config/cpu/generic/atomicity_mutex: New.
* config/cpu/generic/atomicity_mutex/atomicity.h: ...here.
* config/cpu/generic/atomic_builtins: Rename...
* config/cpu/generic/atomicity_builtins: ...to this.
* config/cpu/generic/atomicity_builtins/atomicity.h: Moved.
* config/cpu/mips/atomicity.h: Comment MIPS II requirement.
* scripts/testsuite_flags.in: Make --cxxflags reflect CXXFLAGS.
From-SVN: r115456
-rw-r--r-- | libstdc++-v3/ChangeLog | 18 | ||||
-rw-r--r-- | libstdc++-v3/acinclude.m4 | 63 | ||||
-rw-r--r-- | libstdc++-v3/config.h.in | 2 | ||||
-rw-r--r-- | libstdc++-v3/config/cpu/generic/atomicity_builtins/atomicity.h (renamed from libstdc++-v3/config/cpu/generic/atomic_builtins/atomicity.h) | 5 | ||||
-rw-r--r-- | libstdc++-v3/config/cpu/generic/atomicity_mutex/atomicity.h (renamed from libstdc++-v3/config/cpu/generic/atomicity.h) | 0 | ||||
-rw-r--r-- | libstdc++-v3/config/cpu/mips/atomicity.h | 4 | ||||
-rwxr-xr-x | libstdc++-v3/configure | 74 | ||||
-rw-r--r-- | libstdc++-v3/configure.ac | 8 | ||||
-rw-r--r-- | libstdc++-v3/configure.host | 140 | ||||
-rw-r--r-- | libstdc++-v3/include/bits/atomicity.h | 52 | ||||
-rwxr-xr-x | libstdc++-v3/scripts/testsuite_flags.in | 2 |
11 files changed, 239 insertions, 129 deletions
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index af5c7a9..28f13ce 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,21 @@ +2006-07-14 Benjamin Kosnik <bkoz@redhat.com> + + * acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): New. + * configure.ac: Use it. + * configure: Regenerated. + * config.h.in: Regenerated. + * configure.host: Simplify. + * include/bits/atomicity.h: Adjust macros. + * config/cpu/generic/atomicity.h: Move... + * config/cpu/generic/atomicity_mutex: New. + * config/cpu/generic/atomicity_mutex/atomicity.h: ...here. + * config/cpu/generic/atomic_builtins: Rename... + * config/cpu/generic/atomicity_builtins: ...to this. + * config/cpu/generic/atomicity_builtins/atomicity.h: Moved. + * config/cpu/mips/atomicity.h: Comment MIPS II requirement. + + * scripts/testsuite_flags.in: Make --cxxflags reflect CXXFLAGS. + 2006-07-14 Paolo Carlini <pcarlini@suse.de> * include/tr1/random (minstd_rand0, minstd_rand, ranlux3, ranlux4): diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index 3495664..c160a1a 100644 --- a/libstdc++-v3/acinclude.m4 +++ b/libstdc++-v3/acinclude.m4 @@ -1967,6 +1967,69 @@ AC_DEFUN([GLIBCXX_ENABLE_PCH], [ dnl +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. Note, this is intended to be an +dnl all-or-nothing switch, so all the atomic operations that are used +dnl 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 Defines: +dnl _GLIBCXX_ATOMIC_BUILTINS if the compiler on this target supports atomics. +dnl +AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [ + AC_MSG_CHECKING([for atomic builtins]) + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + + # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style. + cat > conftest.$ac_ext << EOF +[#]line __oline__ "configure" +int main() +{ + // NB: _Atomic_word not necessarily int. + typedef int atomic_type; + atomic_type c1; + atomic_type c2; + const atomic_type c3(0); + if (__sync_fetch_and_add(&c1, c2) == c3) + { + // Do something. + } + return 0; +} +EOF + old_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -S" + if AC_TRY_EVAL(ac_compile); then + if grep __sync_fetch_and_add conftest.s >/dev/null 2>&1 ; then + enable_atomic_builtins=no + else + AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1, + [Define if builtin atomic operations are supported on this host.]) + enable_atomic_builtins=yes + atomicity_dir=cpu/generic/atomicity_builtins + fi + fi + CXXFLAGS="$old_CXXFLAGS" + rm -f conftest* + + # Now, if still generic, set to mutex. + if test $atomicity_dir = "cpu/generic" ; then + atomicity_dir=cpu/generic/atomicity_mutex + fi + AC_LANG_RESTORE + AC_MSG_RESULT($enable_atomic_builtins) +]) + + +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. diff --git a/libstdc++-v3/config.h.in b/libstdc++-v3/config.h.in index ba53014..47e3c98 100644 --- a/libstdc++-v3/config.h.in +++ b/libstdc++-v3/config.h.in @@ -655,7 +655,7 @@ /* Version number of package */ #undef VERSION -/* Define if atomic builtins are provided for this platform. */ +/* Define if builtin atomic operations are supported on this host. */ #undef _GLIBCXX_ATOMIC_BUILTINS /* Define to use concept checking code from the boost libraries. */ diff --git a/libstdc++-v3/config/cpu/generic/atomic_builtins/atomicity.h b/libstdc++-v3/config/cpu/generic/atomicity_builtins/atomicity.h index c6cf812..82429be 100644 --- a/libstdc++-v3/config/cpu/generic/atomic_builtins/atomicity.h +++ b/libstdc++-v3/config/cpu/generic/atomicity_builtins/atomicity.h @@ -28,10 +28,13 @@ // invalidate any other reasons why the executable file might be covered by // the GNU General Public License. -#include <bits/atomicity.h> +#include <bits/c++config.h> +#include <bits/atomic_word.h> _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) + // XXX GLIBCXX_ABI Deprecated + // Should be inlined, and not exported. _Atomic_word __attribute__ ((__unused__)) __exchange_and_add(volatile _Atomic_word* __mem, int __val) diff --git a/libstdc++-v3/config/cpu/generic/atomicity.h b/libstdc++-v3/config/cpu/generic/atomicity_mutex/atomicity.h index 5ecb465..5ecb465 100644 --- a/libstdc++-v3/config/cpu/generic/atomicity.h +++ b/libstdc++-v3/config/cpu/generic/atomicity_mutex/atomicity.h diff --git a/libstdc++-v3/config/cpu/mips/atomicity.h b/libstdc++-v3/config/cpu/mips/atomicity.h index aae70df..33582a3 100644 --- a/libstdc++-v3/config/cpu/mips/atomicity.h +++ b/libstdc++-v3/config/cpu/mips/atomicity.h @@ -1,6 +1,7 @@ // Low-level functions for atomic operations: MIPS version -*- C++ -*- -// Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. +// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 +// Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the @@ -31,6 +32,7 @@ _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) + // NB: MIPS II or above required. _Atomic_word __attribute__ ((__unused__)) __exchange_and_add(volatile _Atomic_word* __mem, int __val) diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure index 46858e7..a180173 100755 --- a/libstdc++-v3/configure +++ b/libstdc++-v3/configure @@ -7994,7 +7994,71 @@ _ACEOF -if test $atomicity_dir = cpu/generic ; then + + echo "$as_me:$LINENO: checking for atomic builtins" >&5 +echo $ECHO_N "checking for atomic builtins... $ECHO_C" >&6 + + + ac_ext=cc +ac_cpp='$CXXCPP $CPPFLAGS' +ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_cxx_compiler_gnu + + + # Fake what AC_TRY_COMPILE does. XXX Look at redoing this new-style. + cat > conftest.$ac_ext << EOF +#line 8011 "configure" +int main() +{ + // NB: _Atomic_word not necessarily int. + typedef int atomic_type; + atomic_type c1; + atomic_type c2; + const atomic_type c3(0); + if (__sync_fetch_and_add(&c1, c2) == c3) + { + // Do something. + } + return 0; +} +EOF + old_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -S" + if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5 + (eval $ac_compile) 2>&5 + ac_status=$? + echo "$as_me:$LINENO: \$? = $ac_status" >&5 + (exit $ac_status); }; then + if grep __sync_fetch_and_add conftest.s >/dev/null 2>&1 ; then + enable_atomic_builtins=no + else + +cat >>confdefs.h <<\_ACEOF +#define _GLIBCXX_ATOMIC_BUILTINS 1 +_ACEOF + + enable_atomic_builtins=yes + atomicity_dir=cpu/generic/atomicity_builtins + fi + fi + CXXFLAGS="$old_CXXFLAGS" + rm -f conftest* + + # Now, if still generic, set to mutex. + if test $atomicity_dir = "cpu/generic" ; then + atomicity_dir=cpu/generic/atomicity_mutex + fi + ac_ext=c +ac_cpp='$CPP $CPPFLAGS' +ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' +ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' +ac_compiler_gnu=$ac_cv_c_compiler_gnu + + echo "$as_me:$LINENO: result: $enable_atomic_builtins" >&5 +echo "${ECHO_T}$enable_atomic_builtins" >&6 + +if test $atomicity_dir = cpu/generic/atomic_mutex ; then { echo "$as_me:$LINENO: WARNING: No native atomic operations are provided for this platform." >&5 echo "$as_me: WARNING: No native atomic operations are provided for this platform." >&2;} if test $target_thread_file = single; then @@ -109919,14 +109983,6 @@ ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir} -# Atomic builtins can be inlined in bits/atomicity.h. -if test $atomicity_dir = cpu/generic/atomic_builtins ; then - -cat >>confdefs.h <<\_ACEOF -#define _GLIBCXX_ATOMIC_BUILTINS 1 -_ACEOF - -fi # Determine cross-compile flags and AM_CONDITIONALs. #AC_SUBST(GLIBCXX_IS_NATIVE) diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac index 88018c3..baada76 100644 --- a/libstdc++-v3/configure.ac +++ b/libstdc++-v3/configure.ac @@ -112,7 +112,8 @@ GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING([no]) # No surprises, no surprises... GLIBCXX_ENABLE_THREADS -if test $atomicity_dir = cpu/generic ; then +GLIBCXX_ENABLE_ATOMIC_BUILTINS +if test $atomicity_dir = cpu/generic/atomic_mutex ; then AC_MSG_WARN([No native atomic operations are provided for this platform.]) if test $target_thread_file = single; then AC_MSG_WARN([They cannot be faked when thread support is disabled.]) @@ -321,11 +322,6 @@ AC_SUBST(CPU_DEFINES_SRCDIR) AC_SUBST(ABI_TWEAKS_SRCDIR) AC_SUBST(OS_INC_SRCDIR) -# Atomic builtins can be inlined in bits/atomicity.h. -if test $atomicity_dir = cpu/generic/atomic_builtins ; then - AC_DEFINE([_GLIBCXX_ATOMIC_BUILTINS], 1, - [Define if atomic builtins are provided for this platform.]) -fi # Determine cross-compile flags and AM_CONDITIONALs. #AC_SUBST(GLIBCXX_IS_NATIVE) diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host index 9dd9837..441eb4c 100644 --- a/libstdc++-v3/configure.host +++ b/libstdc++-v3/configure.host @@ -67,13 +67,16 @@ c_model=c_std c_compatibility=no atomic_word_dir=cpu/generic -cpu_defines_dir=cpu/generic +atomicity_dir="cpu/generic" +cpu_defines_dir="cpu/generic" +try_cpu=generic +abi_tweaks_dir="cpu/generic" # HOST-SPECIFIC OVERRIDES # Set any CPU-dependent bits. -# Here we override defaults and catch more general cases due to naming -# conventions (e.g., chip_name* to catch all variants). +# Provide a way to funnel exotic flavors and prefixed/postfixed chip +# variants into the established source config/cpu/* sub-directories. # THIS TABLE IS SORTED. KEEP IT THAT WAY. case "${host_cpu}" in alpha*) @@ -89,11 +92,7 @@ case "${host_cpu}" in try_cpu=hppa ;; mips*) - # NB: cpu/mips/atomicity.h needs MIPS II or above. - # Of course, there is no sane way to test for this, no ABI macro, - # and no consistent host_cpu name differentiation. Therefore, only - # use it where it is known to be safe, ie it runs linux (see below). - try_cpu=generic + try_cpu=mips ;; m680[246]0) try_cpu=m68k @@ -101,31 +100,21 @@ case "${host_cpu}" in powerpc* | rs6000) try_cpu=powerpc ;; - s390x) - try_cpu=s390 - ;; sparc* | ultrasparc) try_cpu=sparc ;; *) if test -d ${glibcxx_srcdir}/config/cpu/${host_cpu}; then try_cpu=${host_cpu} - else - try_cpu=generic fi - ;; esac -# Set specific CPU overrides for atomic_word_dir. Most can just use generic. -# THIS TABLE IS SORTED. KEEP IT THAT WAY. -case "${host_cpu}" in - cris*) - atomic_word_dir=cpu/cris - ;; - sparc* | ultrasparc) - atomic_word_dir=cpu/sparc - ;; -esac + +# Now look for the file(s) usually tied to a CPU model, and make +# default choices for those if they haven't been explicitly set +# already. +cpu_include_dir=cpu/${try_cpu} + # Set specific CPU overrides for cpu_defines_dir. Most can just use generic. # THIS TABLE IS SORTED. KEEP IT THAT WAY. @@ -135,32 +124,41 @@ case "${host_cpu}" in ;; esac -# Now look for the file(s) usually tied to a CPU model, and make -# default choices for those if they haven't been explicitly set -# already. -cpu_include_dir=cpu/${try_cpu} -abi_baseline_pair=${try_cpu}-${host_os} -unset try_cpu +# Set specific CPU overrides for atomic_word_dir. Most can just use generic. +# THIS TABLE IS SORTED. KEEP IT THAT WAY. case "${host_cpu}" in - alpha* | ia64 | powerpc* | rs6000 | s390*) - atomicity_dir="cpu/generic/atomic_builtins" + alpha*) + atomic_word_dir=cpu/alpha ;; - *) - if test -f ${glibcxx_srcdir}/config/${cpu_include_dir}/atomicity.h ; then - atomicity_dir=$cpu_include_dir - else - atomicity_dir="cpu/generic" - fi + cris*) + atomic_word_dir=cpu/cris + ;; + ia64) + atomic_word_dir=cpu/ia64 + ;; + powerpc* | rs6000) + atomic_word_dir=cpu/powerpc + ;; + sparc* | ultrasparc) + atomic_word_dir=cpu/sparc ;; esac + +# Set specific CPU overrides for atomicity_dir. +# This can be over-ridden in GLIBCXX_ENABLE_ATOMIC_BUILTINS. +# THIS TABLE IS SORTED. KEEP IT THAT WAY. +if test -f ${glibcxx_srcdir}/config/${cpu_include_dir}/atomicity.h ; then + atomicity_dir=$cpu_include_dir +fi + + if test -f ${glibcxx_srcdir}/config/${cpu_include_dir}/cxxabi_tweaks.h ; then abi_tweaks_dir=$cpu_include_dir -else - abi_tweaks_dir="cpu/generic" fi + # Set any OS-dependent bits. # Set the os_include_dir. # Set c_model, c_compatibility here. @@ -276,39 +274,39 @@ esac # Set any OS-dependent and CPU-dependent bits. # THIS TABLE IS SORTED. KEEP IT THAT WAY. case "${host}" in - alpha*-*-freebsd5*) - abi_baseline_pair="alpha-freebsd5" - ;; - arm*-*-linux*) - abi_baseline_pair="arm-linux-gnu" - ;; - i*86-*-freebsd4*) - abi_baseline_pair="i386-freebsd4" - ;; - i*86-*-freebsd5*) - abi_baseline_pair="i386-freebsd5" - ;; - mips*-*-linux*) - atomicity_dir="cpu/mips" - abi_baseline_pair="mips-linux-gnu" - cpu_include_dir="cpu/mips" + *-*-linux*) + case "${host_cpu}" in + i[567]86) + abi_baseline_pair=i486-linux-gnu + ;; + powerpc64) + abi_baseline_pair=powerpc64-linux-gnu + ;; + s390) + abi_baseline_pair=s390-linux-gnu + ;; + s390x) + abi_baseline_pair=s390x-linux-gnu + ;; + x86_64) + abi_baseline_pair=x86_64-linux-gnu + ;; + *) + if test -d ${glibcxx_srcdir}/config/abi/post/${try_cpu}-linux-gnu; then + abi_baseline_pair=${try_cpu}-linux-gnu + fi + esac + ;; + mips*-*-*) + case "${host_os}" in + gnu* | linux* | irix*) + ;; + *) + atomicity_dir="cpu/generic" + ;; + esac ;; powerpc*-*-darwin*) port_specific_symbol_files="\$(srcdir)/../config/os/bsd/darwin/ppc-extra.ver" ;; - powerpc64-*-linux*) - abi_baseline_pair="powerpc64-linux-gnu" - ;; - s390-*-linux*) - abi_baseline_pair="s390-linux-gnu" - ;; - s390x-*-linux*) - abi_baseline_pair="s390x-linux-gnu" - ;; - sparc*-*-freebsd5*) - abi_baseline_pair="sparc-freebsd5" - ;; - x86_64-*-linux*) - abi_baseline_pair="x86_64-linux-gnu" - ;; esac diff --git a/libstdc++-v3/include/bits/atomicity.h b/libstdc++-v3/include/bits/atomicity.h index c6a9883..18832fe 100644 --- a/libstdc++-v3/include/bits/atomicity.h +++ b/libstdc++-v3/include/bits/atomicity.h @@ -41,6 +41,15 @@ _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) +#ifdef _GLIBCXX_ATOMIC_BUILTINS + static inline _Atomic_word + __exchange_and_add(volatile _Atomic_word* __mem, int __val) + { return __sync_fetch_and_add(__mem, __val); } + + static inline void + __atomic_add(volatile _Atomic_word* __mem, int __val) + { __sync_fetch_and_add(__mem, __val); } +#else _Atomic_word __attribute__ ((__unused__)) __exchange_and_add(volatile _Atomic_word* __mem, int __val); @@ -48,34 +57,7 @@ _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) void __attribute__ ((__unused__)) __atomic_add(volatile _Atomic_word* __mem, int __val); - - static inline _Atomic_word - __exchange_and_add_multi(volatile _Atomic_word* __mem, int __val) - { -#ifdef _GLIBCXX_ATOMIC_BUILTINS - - return __sync_fetch_and_add(__mem, __val); - -#else - - return __exchange_and_add(__mem, __val); - -#endif - } - - static inline void - __atomic_add_multi(volatile _Atomic_word* __mem, int __val) - { -#ifdef _GLIBCXX_ATOMIC_BUILTINS - - __sync_fetch_and_add(__mem, __val); - -#else - - __atomic_add(__mem, __val); - #endif - } static inline _Atomic_word __exchange_and_add_single(volatile _Atomic_word* __mem, int __val) @@ -94,16 +76,12 @@ _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) __exchange_and_add_dispatch(volatile _Atomic_word* __mem, int __val) { #ifdef __GTHREADS - if (__gthread_active_p()) - return __exchange_and_add_multi(__mem, __val); + return __exchange_and_add(__mem, __val); else return __exchange_and_add_single(__mem, __val); - #else - return __exchange_and_add_single(__mem, __val); - #endif } @@ -112,23 +90,19 @@ _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) __atomic_add_dispatch(volatile _Atomic_word* __mem, int __val) { #ifdef __GTHREADS - if (__gthread_active_p()) - __atomic_add_multi(__mem, __val); + __atomic_add(__mem, __val); else __atomic_add_single(__mem, __val); - #else - __atomic_add_single(__mem, __val); - #endif } _GLIBCXX_END_NAMESPACE -/* Even if the CPU doesn't need a memory barrier, we need to ensure that - the compiler doesn't reorder memory accesses across the barriers. */ +// Even if the CPU doesn't need a memory barrier, we need to ensure that +// the compiler doesn't reorder memory accesses across the barriers. #ifndef _GLIBCXX_READ_MEM_BARRIER #define _GLIBCXX_READ_MEM_BARRIER __asm __volatile ("":::"memory") #endif diff --git a/libstdc++-v3/scripts/testsuite_flags.in b/libstdc++-v3/scripts/testsuite_flags.in index 83e10f7..4b841ca 100755 --- a/libstdc++-v3/scripts/testsuite_flags.in +++ b/libstdc++-v3/scripts/testsuite_flags.in @@ -50,7 +50,7 @@ case ${query} in --cxxflags) CXXFLAGS_save="-g -O2 -D_GLIBCXX_ASSERT" CXXFLAGS_config='@SECTION_FLAGS@ -fmessage-length=0 - @EXTRA_CXX_FLAGS@ ' + @CXXFLAGS@ @EXTRA_CXX_FLAGS@ ' echo ${CXXFLAGS_save} ${CXXFLAGS_config} ;; --cxxpchflags) |