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cpp: fixed configure.in for gcc 3.x support

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This commit is contained in:
FURUHASHI Sadayuki 2011-06-12 15:16:13 +09:00
parent e5e2b9095c
commit cc0114c482
2 changed files with 34 additions and 3 deletions
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30
cpp/configure.in
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@ -16,7 +16,7 @@ AC_PROG_CC
AC_MSG_CHECKING([if C++ API is enabled])
AC_ARG_ENABLE(cxx,
AS_HELP_STRING([--disable-cxx],
[don't build C++ API]) )
[don't build C++ API]) ) #'
AC_MSG_RESULT([$enable_cxx])
if test "$enable_cxx" != "no"; then
AC_PROG_CXX
@ -50,15 +50,41 @@ AC_CACHE_CHECK([for __sync_* atomic operations], msgpack_cv_atomic_ops, [
], [], msgpack_cv_atomic_ops="yes")
])
if test "$msgpack_cv_atomic_ops" != "yes"; then
AC_MSG_NOTICE([__sync_* atomic operations are not found. Use libstdc++ instead.
if test "$enable_cxx" = "no"; then
AC_MSG_ERROR([__sync_* atomic operations are not found. Try to enable C++ support.
If you are using gcc >= 4.1 and the default target CPU architecture is "i386", try to
add CFLAGS="-march=i686" and CXXFLAGS="-march=i686" options to ./configure as follows:
$ ./configure CFLAGS="-march=i686" CXXFLAGS="-march=i686"
])
fi
AC_LANG_PUSH([C++])
AC_CACHE_CHECK([for __gnu_cxx::__exchange_and_add], msgpack_cv_gcc_cxx_atomic_ops, [
AC_TRY_LINK([
#include <bits/atomicity.h>
int atomic_sub(int i) { return __gnu_cxx::__exchange_and_add(&i, -1); }
int atomic_add(int i) { return __gnu_cxx::__exchange_and_add(&i, 1); }
], [], msgpack_cv_gcc_cxx_atomic_ops="yes")
])
AC_LANG_POP([C++])
if test "$msgpack_cv_gcc_cxx_atomic_ops" != "yes"; then
AC_MSG_ERROR([__sync_* atomic operations nor __gnu_cxx::__exchange_and_add are not found.
If you are using gcc >= 4.1 and the default target CPU architecture is "i386", try to
add CFLAGS="-march=i686" and CXXFLAGS="-march=i686" options to ./configure as follows:
$ ./configure CFLAGS="-march=i686" CXXFLAGS="-march=i686"
])
else
enable_gcc_cxx_atomic=yes
fi
fi
AM_CONDITIONAL(ENABLE_GCC_CXX_ATOMIC, test "$enable_gcc_cxx_atomic" = "yes")
major=`echo $VERSION | sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
minor=`echo $VERSION | sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`

7
cpp/src/Makefile.am
View File

@ -10,10 +10,15 @@ libmsgpack_la_SOURCES = \
if ENABLE_CXX
libmsgpack_la_SOURCES += \
object.cpp \
object.cpp
endif
if ENABLE_GCC_CXX_ATOMIC
libmsgpack_la_SOURCES += \
gcc_atomic.cpp
endif
# -version-info CURRENT:REVISION:AGE
libmsgpack_la_LDFLAGS = -version-info 3:0:0