diff --git a/mach/i86/libpc/compmodule b/mach/i86/libpc/compmodule
new file mode 100755
index 000000000..eb5bd393a
--- /dev/null
+++ b/mach/i86/libpc/compmodule
@@ -0,0 +1,2 @@
+${MACH?ack} -I/usr/em/h ${MACHFL?} $1 1>&2
+echo `basename $1 $2`.s