diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1701c6298deb..3aaacb4cade0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2000-10-20  Tom Tromey  <tromey@cygnus.com>
+
+	* cppspec.c (DEFAULT_WORD_SWITCH_TAKES_ARG): Added -MF and -MT.
+	* gcc.c (DEFAULT_WORD_SWITCH_TAKES_ARG): Added -MF and -MT.
+
 Fri Oct 20 17:05:49 2000  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
 	* expr.c (expand_expr, case SAVE_EXPR): Set RTX_UNCHANGING_P on
diff --git a/gcc/cppspec.c b/gcc/cppspec.c
index 3796cdc7f5a3..428192e2acec 100644
--- a/gcc/cppspec.c
+++ b/gcc/cppspec.c
@@ -52,7 +52,8 @@ Boston, MA 02111-1307, USA.  */
   || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
   || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
   || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
-  || !strcmp (STR, "isystem") || !strcmp (STR, "specs"))
+  || !strcmp (STR, "isystem") || !strcmp (STR, "specs") \
+  || !strcmp (STR, "MF") || !strcmp (STR, "MT"))
 
 #ifndef WORD_SWITCH_TAKES_ARG
 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)
diff --git a/gcc/gcc.c b/gcc/gcc.c
index ebe4741e388b..22bf907259a9 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -653,7 +653,8 @@ static struct user_specs *user_specs_head, *user_specs_tail;
   || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \
   || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \
   || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \
-  || !strcmp (STR, "isystem") || !strcmp (STR, "specs"))
+  || !strcmp (STR, "isystem") || !strcmp (STR, "specs") \
+  || !strcmp (STR, "MF") || !strcmp (STR, "MT"))
 
 #ifndef WORD_SWITCH_TAKES_ARG
 #define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR)