diff -ruN ns-allinone-2.1b9/cweb/Makefile ns-allinone-2.1b9-osx/cweb/Makefile
--- ns-allinone-2.1b9/cweb/Makefile	Tue Jun  5 00:50:28 2001
+++ ns-allinone-2.1b9-osx/cweb/Makefile	Tue Jul  9 09:09:27 2002
@@ -56,7 +56,7 @@
 #LINKFLAGS = -s # for smaller (stripped) executables on many UNIX systems
 
 # What C compiler are you using?
-CC = gcc
+CC = cc
 
 # RM and CP are used below in case rm and cp are aliased
 RM= /bin/rm
diff -ruN ns-allinone-2.1b9/gt-itm/sgb2ns/Makefile ns-allinone-2.1b9-osx/gt-itm/sgb2ns/Makefile
--- ns-allinone-2.1b9/gt-itm/sgb2ns/Makefile	Tue Jun  5 00:53:33 2001
+++ ns-allinone-2.1b9-osx/gt-itm/sgb2ns/Makefile	Tue Jul  9 09:14:00 2002
@@ -16,7 +16,7 @@
 BDIR = $(GT_ITM)/bin
 
 CFLAGS = -I$(IDIR) -L$(LDIR) $(SYS)
-CC = gcc 
+CC = cc 
 
 CN = sgb2ns.o
 HN = sgb2hierns.o
diff -ruN ns-allinone-2.1b9/gt-itm/src/Makefile ns-allinone-2.1b9-osx/gt-itm/src/Makefile
--- ns-allinone-2.1b9/gt-itm/src/Makefile	Tue Jun  5 00:53:33 2001
+++ ns-allinone-2.1b9-osx/gt-itm/src/Makefile	Tue Jul  9 09:13:40 2002
@@ -17,7 +17,7 @@
 BDIR = ../bin
 
 CFLAGS = -I$(IDIR) -L$(LDIR) $(SYS) $(BSDF)
-CC = gcc 
+CC = cc 
 
 GO = itm.o geog.o ts.o dfs.o
 CO = sgb2alt.o 
@@ -56,7 +56,7 @@
 
 eval.o: $(IDIR)/gb_graph.h $(IDIR)/gb_dijk.h $(IDIR)/eval.h
 
-	
+
 clean:  
 	\rm -f *.o
 
diff -ruN ns-allinone-2.1b9/install ns-allinone-2.1b9-osx/install
--- ns-allinone-2.1b9/install	Tue Apr 23 01:42:09 2002
+++ ns-allinone-2.1b9-osx/install	Tue Jul  9 09:13:05 2002
@@ -183,7 +183,7 @@
 
 blame='Tcl is not part of the ns project.  Please see www.Scriptics.com
 to see if they have a fix for your platform.'
-./configure --enable-gcc --disable-shared --prefix=$CUR_PATH || die "tcl8.3.2 configuration failed! Exiting ..."
+./configure --disable-shared --prefix=$CUR_PATH || die "tcl8.3.2 configuration failed! Exiting ..."
 if make 
 then 
 	echo "tcl$TCLVER make succeeded."
@@ -211,7 +211,7 @@
 
 blame='Tk is not part of the ns project.  Please see www.Scriptics.com
 to see if they have a fix for your platform.'
-./configure --enable-gcc --disable-shared --prefix=$CUR_PATH || die "tk8.3.2 configuration failed! Exiting ..."
+./configure --disable-shared --prefix=$CUR_PATH || die "tk8.3.2 configuration failed! Exiting ..."
 if make 
 then
 	echo "tk$TKVER build succeeded."
diff -ruN ns-allinone-2.1b9/nam-1.0a11/config.sub ns-allinone-2.1b9-osx/nam-1.0a11/config.sub
--- ns-allinone-2.1b9/nam-1.0a11/config.sub	Mon Apr 15 22:18:52 2002
+++ ns-allinone-2.1b9-osx/nam-1.0a11/config.sub	Mon Jul  8 20:58:16 2002
@@ -750,6 +750,8 @@
 	-xenix)
 		os=-xenix
 		;;
+	-darwin*)
+                ;;
 	-none)
 		;;
 	*)
diff -ruN ns-allinone-2.1b9/ns-2.1b9/Makefile.in ns-allinone-2.1b9-osx/ns-2.1b9/Makefile.in
--- ns-allinone-2.1b9/ns-2.1b9/Makefile.in	Mon Mar 18 22:39:26 2002
+++ ns-allinone-2.1b9-osx/ns-2.1b9/Makefile.in	Mon Jul  8 21:08:59 2002
@@ -272,22 +272,28 @@
 OBJ_COMPAT = $(OBJ_GETOPT) common/win32.o
 #XXX compat/win32x.o compat/tkConsole.o
 
-OBJ_EMULATE_CC = \
-	emulate/net-ip.o \
-	emulate/net.o \
-	emulate/tap.o \
-	emulate/ether.o \
-	emulate/internet.o \
-	emulate/ping_responder.o \
-	emulate/arp.o \
-	emulate/icmp.o \
-	emulate/net-pcap.o \
-	emulate/nat.o  \
-	emulate/iptap.o \
-	emulate/tcptap.o
 
-OBJ_EMULATE_C = \
-	emulate/inet.o
+
+#OBJ_EMULATE_CC = \
+#	emulate/net-ip.o \
+#	emulate/net.o \
+#	emulate/tap.o \
+#	emulate/ether.o \
+#	emulate/internet.o \
+#	emulate/ping_responder.o \
+#	emulate/arp.o \
+#	emulate/icmp.o \
+#	emulate/net-pcap.o \
+#	emulate/nat.o  \
+#	emulate/iptap.o \
+#	emulate/tcptap.o
+
+#OBJ_EMULATE_C = \
+#	emulate/inet.o
+
+# hack to remove emulate code which doesn't compile on darwin
+OBJ_EMULATE_CC =
+OBJ_EMULATE_C = 
 
 OBJ_GEN = $(GEN_DIR)version.o $(GEN_DIR)ns_tcl.o $(GEN_DIR)ptypes.o
 
diff -ruN ns-allinone-2.1b9/ns-2.1b9/config.sub ns-allinone-2.1b9-osx/ns-2.1b9/config.sub
--- ns-allinone-2.1b9/ns-2.1b9/config.sub	Wed Jan 20 01:44:25 1999
+++ ns-allinone-2.1b9-osx/ns-2.1b9/config.sub	Mon Jul  8 20:57:40 2002
@@ -750,6 +750,8 @@
 	-xenix)
 		os=-xenix
 		;;
+	-darwin*)
+                ;;
 	-none)
 		;;
 	*)