diff --git a/lang/cem/libcc.ansi/ctype/.distr b/lang/cem/libcc.ansi/ctype/.distr
new file mode 100644
index 000000000..3c8007007
--- /dev/null
+++ b/lang/cem/libcc.ansi/ctype/.distr
@@ -0,0 +1,4 @@
+LIST
+Makefile
+char.tab
+genfiles.c
diff --git a/lang/cem/libcc.ansi/ctype/Makefile b/lang/cem/libcc.ansi/ctype/Makefile
index c4aeb170e..b019c5596 100644
--- a/lang/cem/libcc.ansi/ctype/Makefile
+++ b/lang/cem/libcc.ansi/ctype/Makefile
@@ -5,9 +5,19 @@ CFLAGS=-L -LIB
 .e.o:
 	$(CC) $(CFLAGS) -c -o $@ $*.e
 
+clean:
+	rm -rf isalnum.o isalpha.o iscntrl.o isdigit.o isgraph.o \
+		islower.o isprint.o ispunct.o isspace.o isupper.o \
+		isxdigit.o isascii.o tolower.o toupper.o chartab.o \
+		isalnum.c isalpha.c iscntrl.c isdigit.c isgraph.c \
+		islower.c isprint.c ispunct.c isspace.c isupper.c \
+		isxdigit.c isascii.c tolower.c toupper.c chartab.c \
+		genfiles OLIST
 
+# genfiles should not be compiled with $(CC) because we might be
+# cross-compiling, in which case $(CC) does not yield a runnable object.
 genfiles: genfiles.c
-	$(CC) genfiles.c -o genfiles
+	cc genfiles.c -o genfiles
 
 chartab.c: char.tab
 	tabgen -fchar.tab > chartab.c