--- gforth/configure.in	2003/01/30 16:14:30	1.110
+++ gforth/configure.in	2003/01/31 22:45:11	1.111
@@ -434,7 +434,7 @@ fi
 AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
 AC_FUNC_FSEEKO
 AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
-AC_CHECK_TYPES(stack_t)
+AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
 AC_DECL_SYS_SIGLIST
 AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt); AC_LIBOBJ(getopt1))
 AC_CHECK_FUNCS(expm1 log1p)