More Mac tweaks.
diff --git a/src/Makefile b/src/Makefile
index 1c8010d..7fe300b 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,4 +1,6 @@
 ../bin/mk: mkmk.sh
+	SYSNAME=`uname` export SYSNAME; \
+	OBJTYPE=`uname -m | sed 's;i.86;386;; s;/.*;;; s; ;;g'` export OBJTYPE; \
 	PATH=`pwd`/../bin:$$PATH export PATH; \
 	PLAN9=`pwd`/.. export PLAN9; \
 	sh -x mkmk.sh