diff --git a/mk.sh b/mk.sh
new file mode 100755
index 0000000..2203f88
--- /dev/null
+++ b/mk.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+g++ -o ldid -Wall -W -pedantic -O2 -I. ldid.cpp -x c lookup2.c -x c sha1.c
+g++ -o ldid2 -Wall -W -pedantic -O2 -I. ldid2.cpp -x c lookup2.c -x c sha224-256.c