--- parser3/acsite.m4	2003/03/27 15:45:13	1.1.2.2
+++ parser3/acsite.m4	2006/03/23 22:09:33	1.16.6.1
@@ -30,3 +30,22 @@ PA_CHECK_MATH_FUNC_ONE_ARG($pa_func,
               [$3])dnl
 done
 ])
+
+
+AC_DEFUN([PA_CHECK_SIGSETJMP],[
+pa_func=sigsetjmp
+AC_MSG_CHECKING(for (maybe built-in) function $pa_func)
+AC_TRY_COMPILE([
+#ifdef HAVE_SETJMP_H
+#	include <setjmp.h>
+#endif
+],[
+        $pa_func(0,0);
+],
+[AC_MSG_RESULT(yes)
+AC_DEFINE_UNQUOTED([AS_TR_CPP([HAVE_$pa_func])])
+],
+[AC_MSG_RESULT(no)
+])
+]
+)