diff --git a/configure/os/CONFIG.Common.darwin-fat b/configure/os/CONFIG.Common.darwin-fat
deleted file mode 100644
index 29724eebf..000000000
--- a/configure/os/CONFIG.Common.darwin-fat
+++ /dev/null
@@ -1,22 +0,0 @@
-# CONFIG.Common.darwin-fat
-#
-# $Id$
-# This file is maintained by the build community.
-#
-# Definitions for darwin-fat target builds
-# Sites may override these definitions in CONFIG_SITE.Common.darwin-fat
-#-------------------------------------------------------
-
-#
-# Set architecture-specific information
-#
-ARCH_CLASS = fat
-
-#
-# Universal binary support
-#
-OP_SYS_CFLAGS += -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch i386 -arch ppc
-OP_SYS_LDFLAGS += -Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk -arch i386 -arch ppc
-
-# Include definitions common to all Darwin targets
-include $(CONFIG)/os/CONFIG.darwinCommon.darwinCommon
diff --git a/configure/os/CONFIG.darwin-fat.Common b/configure/os/CONFIG.darwin-fat.Common
deleted file mode 100644
index 184cd1b29..000000000
--- a/configure/os/CONFIG.darwin-fat.Common
+++ /dev/null
@@ -1,11 +0,0 @@
-# CONFIG.darwin-fat.Common
-#
-# $Id$
-# This file is maintained by the build community.
-#
-# Definitions for darwin-fat host builds
-# Sites may override these definitions in CONFIG_SITE.darwin-fat.Common
-#-------------------------------------------------------
-
-#Include definitions common to unix hosts
-include $(CONFIG)/os/CONFIG.UnixCommon.Common