+
+dnl
+dnl Check to see whether CC (gcc) supports the -mwin32 option.
+dnl
+AC_DEFUN(FPTOOLS_CC_MWIN32,
+[AC_CACHE_CHECK([whether $CC accepts -mwin32], ac_cv_cc_supports_mwin32,
+[save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -mwin32"
+ AC_LANG_C
+ AC_TRY_COMPILE(,[int main(){return(0);}], ac_cv_cc_supports_mwin32=yes, ac_cv_cc_supports_mwin32=no)
+ CFLAGS="$CFLAGS_save"])
+if test "$ac_cv_cc_supports_mwin32" = yes; then
+ CC_MWIN32_FLAG="-mwin32";
+else
+ CC_MWIN32_FLAG="";
+fi;
+AC_SUBST(CC_MWIN32_FLAG)
+])