diff --git a/mozilla/layout/config/config.mak b/mozilla/layout/config/config.mak
new file mode 100644
index 00000000000..ac61150cfc6
--- /dev/null
+++ b/mozilla/layout/config/config.mak
@@ -0,0 +1,30 @@
+#!nmake
+#
+# The contents of this file are subject to the Netscape Public License
+# Version 1.0 (the "NPL"); you may not use this file except in
+# compliance with the NPL.  You may obtain a copy of the NPL at
+# http://www.mozilla.org/NPL/
+#
+# Software distributed under the NPL is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+# for the specific language governing rights and limitations under the
+# NPL.
+#
+# The Initial Developer of this code under the NPL is Netscape
+# Communications Corporation.  Portions created by Netscape are
+# Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+# Reserved.
+
+IGNORE_MANIFEST=1
+
+# First include standard config file
+include <$(DEPTH)\config\config.mak>
+
+# Replace optimizer and pdb related flags to use our own conventions
+!ifdef LIBRARY_NAME
+!ifdef MOZ_DEBUG
+OPTIMIZER=-Zi -DDEBUG -UNDEBUG -D_DEBUG
+PDBFILE=$(LIBRARY_NAME)
+OS_LFLAGS=/DEBUG /DEBUGTYPE:CV /PDB:$(PDBFILE)
+!endif
+!endif
diff --git a/mozilla/layout/config/rules.mak b/mozilla/layout/config/rules.mak
new file mode 100644
index 00000000000..1fb54470b8d
--- /dev/null
+++ b/mozilla/layout/config/rules.mak
@@ -0,0 +1,19 @@
+#!nmake
+#
+# The contents of this file are subject to the Netscape Public License
+# Version 1.0 (the "NPL"); you may not use this file except in
+# compliance with the NPL.  You may obtain a copy of the NPL at
+# http://www.mozilla.org/NPL/
+#
+# Software distributed under the NPL is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+# for the specific language governing rights and limitations under the
+# NPL.
+#
+# The Initial Developer of this code under the NPL is Netscape
+# Communications Corporation.  Portions created by Netscape are
+# Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+# Reserved.
+
+include <$(DEPTH)\layout\config\config.mak>
+include <$(DEPTH)\config\rules.mak>