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#############################################################
# when compiling on Win32 we have to add the option
# -fnative-struct for gcc2 or
# --mms-bitfields for gcc3
# parts from glib configure.in
dnl AC_GCC_MSNATIVE_STRUCT
dnl test if gcc supports option for MSnative struct
dnl
AC_DEFUN(AC_GCC_MSNATIVE_STRUCT,
[dnl
dnl Add ms native struct gcc option to CFLAGS if available
dnl
dnl if test x"$glib_native_win32" = xyes; then
AC_CHECK_HEADERS(windows.h,
[
if test x"$GCC" = xyes; then
msnative_struct=''
AC_MSG_CHECKING([how to get MSVC-compatible struct packing])
if test -z "$ac_cv_prog_CC"; then
our_gcc="$CC"
else
our_gcc="$ac_cv_prog_CC"
fi
case `$our_gcc --version | sed -e 's,\..*,.,' -e q` in
2.)
if $our_gcc -v --help 2>/dev/null | grep fnative-struct >/dev/null; then
msnative_struct='-fnative-struct'
fi
;;
*)
if $our_gcc -v --help 2>/dev/null | grep ms-bitfields >/dev/null; then
msnative_struct='-mms-bitfields'
fi
;;
esac
if test x"$msnative_struct" = x ; then
AC_MSG_RESULT([no way])
AC_MSG_WARN([produced libraries might be incompatible with MSVC-compiled code])
else
CFLAGS="$CFLAGS $msnative_struct"
AC_MSG_RESULT([${msnative_struct}])
fi
fi
dnl fi
])
])
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