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acinclude.m4 (GLIBCXX_ENABLE_PCH): Rework test such that it tests not only generation of pch files, but also their use. 

* acinclude.m4 (GLIBCXX_ENABLE_PCH): Rework test such that it
tests not only generation of pch files, but also their use.
* aclocal.m4, configure: Rebuilt.

From-SVN: r69727
This commit is contained in:
Alexandre Oliva 2003-07-23 21:41:01 +00:00 committed by Alexandre Oliva
parent bd16cb258e
commit 118545ec26
4 changed files with 1278 additions and 1264 deletions
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6
libstdc++-v3/ChangeLog
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@ -1,3 +1,9 @@
2003-07-23 Alexandre Oliva <aoliva@redhat.com>
* acinclude.m4 (GLIBCXX_ENABLE_PCH): Rework test such that it
tests not only generation of pch files, but also their use.
* aclocal.m4, configure: Rebuilt.
2003-07-23 Steve Ellcey <sje@cup.hp.com>
* config/cpu/hppa/atomicity.h: Change

37
libstdc++-v3/acinclude.m4
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@ -1394,7 +1394,7 @@ AC_ARG_ENABLE(libstdcxx_pch,
changequote(<<, >>)dnl
<< --enable-libstdcxx-pch build pre-compiled libstdc++ includes [default=>>GLIBCXX_ENABLE_PCH_DEFAULT],
changequote([, ])dnl
[case "${enableval}" in
[case ${enableval} in
yes) enable_libstdcxx_pch=yes ;;
no) enable_libstdcxx_pch=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable PCH]) ;;
@ -1402,27 +1402,30 @@ changequote([, ])dnl
enable_libstdcxx_pch=GLIBCXX_ENABLE_PCH_DEFAULT)dnl
if test x$enable_libstdcxx_pch = xyes; then
ac_test_CXXFLAGS="${CXXFLAGS+set}"
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS='-Werror -Winvalid-pch -Wno-deprecated -x c++-header'
AC_MSG_CHECKING([for compiler that seems to compile .gch files])
if test x${pch_comp+set} != xset; then
AC_CACHE_VAL(pch_comp, [
AC_CACHE_CHECK([for pch support], [libstdcxx_cv_pch_comp],[
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([#include <math.h>], ,
[pch_comp=yes], [pch_comp=no])
ac_save_CXXFLAGS=$CXXFLAGS
CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
echo '#include <math.h>' > conftest.h
if ${CXX-g++} $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.C &&
${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.C 1>&5 2>&1 ; then
libstdcxx_cv_pch_comp=yes
else
libstdcxx_cv_pch_comp=no
fi
rm -f conftest*
CXXFLAGS=$ac_save_CXXFLAGS
AC_LANG_RESTORE
])
fi
AC_MSG_RESULT([$pch_comp])
CXXFLAGS="$ac_save_CXXFLAGS"
])
fi
if test x"$enable_libstdcxx_pch" = xyes && test x"$pch_comp" = xno; then
enable_pch=no
if test x"$enable_libstdcxx_pch" = xyes &&
test x"$libstdcxx_cv_pch_comp" = xno; then
enable_libstdcxx_pch=no
fi
AC_MSG_CHECKING([for enabled PCH])

37
libstdc++-v3/aclocal.m4 vendored
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@ -1406,7 +1406,7 @@ AC_ARG_ENABLE(libstdcxx_pch,
changequote(<<, >>)dnl
<< --enable-libstdcxx-pch build pre-compiled libstdc++ includes [default=>>GLIBCXX_ENABLE_PCH_DEFAULT],
changequote([, ])dnl
[case "${enableval}" in
[case ${enableval} in
yes) enable_libstdcxx_pch=yes ;;
no) enable_libstdcxx_pch=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable PCH]) ;;
@ -1414,27 +1414,30 @@ changequote([, ])dnl
enable_libstdcxx_pch=GLIBCXX_ENABLE_PCH_DEFAULT)dnl
if test x$enable_libstdcxx_pch = xyes; then
ac_test_CXXFLAGS="${CXXFLAGS+set}"
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS='-Werror -Winvalid-pch -Wno-deprecated -x c++-header'
AC_MSG_CHECKING([for compiler that seems to compile .gch files])
if test x${pch_comp+set} != xset; then
AC_CACHE_VAL(pch_comp, [
AC_CACHE_CHECK([for pch support], [libstdcxx_cv_pch_comp],[
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([#include <math.h>], ,
[pch_comp=yes], [pch_comp=no])
ac_save_CXXFLAGS=$CXXFLAGS
CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
echo '#include <math.h>' > conftest.h
if ${CXX-g++} $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.C &&
${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.C 1>&5 2>&1 ; then
libstdcxx_cv_pch_comp=yes
else
libstdcxx_cv_pch_comp=no
fi
rm -f conftest*
CXXFLAGS=$ac_save_CXXFLAGS
AC_LANG_RESTORE
])
fi
AC_MSG_RESULT([$pch_comp])
CXXFLAGS="$ac_save_CXXFLAGS"
])
fi
if test x"$enable_libstdcxx_pch" = xyes && test x"$pch_comp" = xno; then
enable_pch=no
if test x"$enable_libstdcxx_pch" = xyes &&
test x"$libstdcxx_cv_pch_comp" = xno; then
enable_libstdcxx_pch=no
fi
AC_MSG_CHECKING([for enabled PCH])

2462
libstdc++-v3/configure vendored
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