diff --git a/mach/z80/libcc/Makefile b/mach/z80/libcc/Makefile
index d6e9890fe..acc68c1be 100644
--- a/mach/z80/libcc/Makefile
+++ b/mach/z80/libcc/Makefile
@@ -3,7 +3,6 @@ MACHDEF="MACH=z80" "SUF=s"
 STDIO="PREF=cc" "SUB=.1s" "SRC=lang/cem/libcc/stdio"
 GEN="PREF=cc" "SUB=.2g" "SRC=lang/cem/libcc/gen"
 MON="PREF=mon" "SRC=lang/cem/libcc/mon"
-LIBDIR=../lib
 
 install:	cpstdio cpgen cpmon
 
@@ -18,15 +17,15 @@ cmp:		cmpstdio cmpgen cmpmon
 
 cmpstdio:
 		make -f $(MAKEFILE) $(STDIO) $(MACHDEF) tail
-		-cmp tail_cc.1s $(LIBDIR)/tail_cc.1s
+		-../../compare tail_cc.1s
 cmpgen:
 		make -f $(MAKEFILE) $(GEN) $(MACHDEF) head
-		-cmp head_cc $(LIBDIR)/head_cc
+		-../../compare head_cc
 		make -f $(MAKEFILE) $(GEN) $(MACHDEF) tail
-		-cmp tail_cc.2g $(LIBDIR)/tail_cc.2g
+		-../../compare tail_cc.2g
 cmpmon:
 		make -f $(MAKEFILE) $(MON) $(MACHDEF) tail
-		-cmp tail_mon $(LIBDIR)/tail_mon
+		-../../compare tail_mon
 
 clean:
 		-rm -f *.old *.[ce$(SUF)] tail* head*
diff --git a/mach/z80/libpc/Makefile b/mach/z80/libpc/Makefile
index 1fa98d2d1..5128fcec3 100644
--- a/mach/z80/libpc/Makefile
+++ b/mach/z80/libpc/Makefile
@@ -1,15 +1,14 @@
 MAKEFILE=../../proto/libg/Makefile
 MACHDEF="MACH=z80" "SUF=s"
 PCDEF="PREF=pc" "SUB=" "SRC=lang/pc/libpc"
-LIBDIR=../lib
 
 install:
 	make -f $(MAKEFILE) $(PCDEF) $(MACHDEF) cp
 
 cmp:
 	make -f $(MAKEFILE) $(PCDEF) $(MACHDEF) all
-	cmp head_pc $(LIBDIR)/head_pc
-	cmp tail_pc $(LIBDIR)/tail_pc
+	-../../compare head_pc
+	-../../compare tail_pc
 
 clean:
 		-rm -f *.old *.[ce$(SUF)] tail* head*
diff --git a/mach/z8000/libcc/Makefile b/mach/z8000/libcc/Makefile
index 2777dc9db..9d6e972e5 100644
--- a/mach/z8000/libcc/Makefile
+++ b/mach/z8000/libcc/Makefile
@@ -3,7 +3,6 @@ MACHDEF="MACH=z8000" "SUF=s"
 STDIO="PREF=cc" "SUB=.1s" "SRC=lang/cem/libcc/stdio"
 GEN="PREF=cc" "SUB=.2g" "SRC=lang/cem/libcc/gen"
 MON="PREF=mon" "SRC=lang/cem/libcc/mon"
-LIBDIR=../lib
 
 install:	cpstdio cpgen cpmon
 
@@ -18,15 +17,15 @@ cmp:		cmpstdio cmpgen cmpmon
 
 cmpstdio:
 		make -f $(MAKEFILE) $(STDIO) $(MACHDEF) tail
-		-cmp tail_cc.1s $(LIBDIR)/tail_cc.1s
+		-../../compare tail_cc.1s
 cmpgen:
 		make -f $(MAKEFILE) $(GEN) $(MACHDEF) head
-		-cmp head_cc $(LIBDIR)/head_cc
+		-../../compare head_cc
 		make -f $(MAKEFILE) $(GEN) $(MACHDEF) tail
-		-cmp tail_cc.2g $(LIBDIR)/tail_cc.2g
+		-../../compare tail_cc.2g
 cmpmon:
 		make -f $(MAKEFILE) $(MON) $(MACHDEF) tail
-		-cmp tail_mon $(LIBDIR)/tail_mon
+		-../../compare tail_mon
 
 clean:
 		-rm -f *.old *.[ce$(SUF)] tail* head*
diff --git a/mach/z8000/libpc/Makefile b/mach/z8000/libpc/Makefile
index 88dd00a20..d3b0b752f 100644
--- a/mach/z8000/libpc/Makefile
+++ b/mach/z8000/libpc/Makefile
@@ -1,15 +1,14 @@
 MAKEFILE=Makef.pr.l
 MACHDEF="MACH=z8000" "SUF=s"
 PCDEF="PREF=pc" "SUB=" "SRC=lang/pc/libpc"
-LIBDIR=../lib
 
 install:
 	make -f $(MAKEFILE) $(PCDEF) $(MACHDEF) cp
 
 cmp:
 	make -f $(MAKEFILE) $(PCDEF) $(MACHDEF) all
-	cmp head_pc $(LIBDIR)/head_pc
-	cmp tail_pc $(LIBDIR)/tail_pc
+	-../../compare head_pc
+	-../../compare tail_pc
 
 clean:
 		-rm -f *.old *.[ce$(SUF)] tail* head*