--- gforth/configure.in	2007/07/03 21:41:29	1.195
+++ gforth/configure.in	2007/12/04 14:55:03	1.197
@@ -619,7 +619,7 @@ AC_MSG_RESULT($MAYBE_UNUSED)
 
 #try if m4 understands -s
 AC_MSG_CHECKING([how to invoke m4])
-if m4 -s /dev/null; then
+if m4 -s /dev/null >/dev/null 2>&1; then
  M4="m4 -s"
 else
  M4=m4
@@ -799,6 +799,7 @@ dnl Checks for library functions
 dnl This check is just for making later checks link with libm.
 dnl using sin here is no good idea since it is built-into gcc and typechecked
 AC_CHECK_LIB(m,asin)
+AC_CHECK_LIB(ltdl,lt_dlinit)
 AC_CHECK_LIB(dl,dlopen)
 dnl check for libffi 2.x
 AC_CHECK_LIB(ffi,ffi_call)