AC_INIT(msgpack, m4_esyscmd([cat include/msgpack/version_master.h | tr -d “n” | sed -e ‘s/#define MSGPACK_VERSION_MAJOR[]*([[:alnum:]]*)/1./g’ -e ‘s/#define MSGPACK_VERSION_MINOR[]*([[:alnum:]]*)/1./g’ -e ‘s/#define MSGPACK_VERSION_REVISION[]*([[:alnum:]]*)/1/g’ | tr -d “n”])) AC_CONFIG_AUX_DIR(ac) AM_INIT_AUTOMAKE AC_CONFIG_HEADER(config.h) AC_SUBST(CFLAGS) CFLAGS=“-O3 -Wall $CFLAGS”
AC_SUBST(CXXFLAGS) CXXFLAGS=“-O3 -Wall $CXXFLAGS”
AC_PROG_CC
AC_MSG_CHECKING([if C++ API is enabled]) AC_ARG_ENABLE(cxx,
AS_HELP_STRING([--disable-cxx], [don't build C++ API]) ) #'
AC_MSG_RESULT() if test “$enable_cxx” != “no”; then
AC_PROG_CXX AM_PROG_CC_C_O
fi AM_CONDITIONAL(ENABLE_CXX, test “$enable_cxx” != “no”)
AC_PROG_LIBTOOL AM_PROG_AS
AC_MSG_CHECKING([if debug option is enabled]) AC_ARG_ENABLE(debug,
AS_HELP_STRING([--disable-debug], [disable assert macros and omit -g option]) )
AC_MSG_RESULT() if test “$enable_debug” != “no”; then
CXXFLAGS="$CXXFLAGS -g" CFLAGS="$CFLAGS -g"
else
CXXFLAGS="$CXXFLAGS -DNDEBUG" CFLAGS="$CFLAGS -DNDEBUG"
fi
AC_CACHE_CHECK([for _sync* atomic operations], msgpack_cv_atomic_ops, [
AC_TRY_LINK([ int atomic_sub(int i) { return __sync_sub_and_fetch(&i, 1); } int atomic_add(int i) { return __sync_add_and_fetch(&i, 1); } ], [atomic_sub(1); atomic_add(1);], msgpack_cv_atomic_ops="yes") ])
if test “$msgpack_cv_atomic_ops” != “yes”; then
if test "$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) - 1; } int atomic_add(int i) { return __gnu_cxx::__exchange_and_add(&i, 1) + 1; } ], [atomic_sub(1); atomic_add(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]]*).([]*).*/1/‘` minor=`echo $VERSION | sed ’s/([]*).([[0-9]]*).([]*).*/2/‘` revision=`echo $VERSION | sed ’s/([]*).([[0-9]]*).([]*).*/3/‘` AC_SUBST(VERSION_MAJOR, $major) AC_SUBST(VERSION_MINOR, $minor) AC_SUBST(VERSION_REVISION, $revision)
AC_OUTPUT([Makefile
msgpack.pc src/Makefile test/Makefile])