diff --git a/js/src/config/Darwin1.3.mk b/js/src/config/Darwin1.3.mk
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+# -*- Mode: makefile -*-
+#
+# The contents of this file are subject to the Netscape Public
+# License Version 1.1 (the "License"); you may not use this file
+# except in compliance with the License. You may obtain a copy of
+# the License at http://www.mozilla.org/NPL/
+#
+# Software distributed under the License is distributed on an "AS
+# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
+# implied. See the License for the specific language governing
+# rights and limitations under the License.
+#
+# The Original Code is Mozilla Communicator client code, released
+# March 31, 1998.
+#
+# The Initial Developer of the Original Code is Netscape
+# Communications Corporation.  Portions created by Netscape are
+# Copyright (C) 1998 Netscape Communications Corporation. All
+# Rights Reserved.
+#
+# Contributor(s): 
+#
+#  Steve Zellers (zellers@apple.com)
+#
+# Alternatively, the contents of this file may be used under the
+# terms of the GNU Public License (the "GPL"), in which case the
+# provisions of the GPL are applicable instead of those above.
+# If you wish to allow use of your version of this file only
+# under the terms of the GPL and not to allow others to use your
+# version of this file under the NPL, indicate your decision by
+# deleting the provisions above and replace them with the notice
+# and other provisions required by the GPL.  If you do not delete
+# the provisions above, a recipient may use your version of this
+# file under either the NPL or the GPL.
+#
+
+#
+# Config for Mac OS X as of PR3
+# Just ripped from Linux config
+#
+
+CC = cc
+CCC = g++
+CFLAGS +=  -Wall -Wno-format
+OS_CFLAGS = -DXP_UNIX -DSVR4 -DSYSV -D_BSD_SOURCE -DPOSIX_SOURCE -DRHAPSODY
+
+RANLIB = ranlib
+MKSHLIB = libtool $(XMKSHLIBOPTS) -framework System
+
+#.c.o:
+#      $(CC) -c -MD $*.d $(CFLAGS) $<
+
+CPU_ARCH = $(shell uname -m)
+ifeq (86,$(findstring 86,$(CPU_ARCH)))
+CPU_ARCH = x86
+OS_CFLAGS+= -DX86_LINUX
+endif
+GFX_ARCH = x
+
+OS_LIBS = -lc -framework System
+
+ASFLAGS += -x assembler-with-cpp
+
+ifeq ($(CPU_ARCH),alpha)
+
+# Ask the C compiler on alpha linux to let us work with denormalized
+# double values, which are required by the ECMA spec.
+
+OS_CFLAGS += -mieee
+endif
+
+# Use the editline library to provide line-editing support.
+JS_EDITLINE = 1
+
+# Don't allow Makefile.ref to use libmath
+NO_LIBM = 1
+