diff --git a/mach/pdp/libem/Makefile b/mach/pdp/libem/Makefile
index 7bc76fc01..b0c1526db 100644
--- a/mach/pdp/libem/Makefile
+++ b/mach/pdp/libem/Makefile
@@ -12,28 +12,21 @@ cmp:            all
 		cmp tail_em $l/tail_em
 		rm -f head_em tail_em
 
+distr:
+		arch cr `head -1 LIST` `tail +2 LIST`
+
 all:            head_em tail_em
 
 head_em:        head_em.s
 		pdp -c head_em.s ; mv head_em.o head_em
 
-tail_em:        tail_em.s.a
-		mkdir tmp; \
-		cd tmp; \
-		ar x ../tail_em.s.a; \
-		for i in *.s; \
-		do \
-		  pdp -c $$i; \
-		done; \
-		ar cr tail.a `lorder *.o | tsort`; \
-		cp tail.a ../tail_em; \
-		cd ..; \
-		rm -r tmp
+tail_em:
+		march . tail_em
 
 clean:
-		-rm -f `ar t tail_em.s.a` ; rm -rf temp ; rm -f *.o
+		rm -f *.o
 opr:
 		make pr | opr
 pr:
 		@pr `pwd`/Makefile `pwd`/head_em.s
-		@ar pv tail_em.s.a | pr -h `pwd`/tail_em.s.a
+		pr -l33 `tail +1 LIST|sort`