diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000000000000000000000000000000000000..0d8e56f70c20c330dad735848683dc0fb7f8432e
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+# build railgun
+
+ROOT_PATH=$(readlink -f $(dirname ${0}))
+SRC_PATH=${ROOT_PATH}/src
+BUILD_PATH=${SRC_PATH}/build
+LIB_PATH=${SRC_PATH}/lib
+function _build
+{
+	if [ ! -d ${BUILD_PATH} ]; then
+        mkdir ${BUILD_PATH}
+    fi
+    cd ${BUILD_PATH}
+    cmake ${SRC_PATH}
+    cp -r ${SRC_PATH}/lib ${BUILD_PATH}
+    cd ${BUILD_PATH}/lib
+    python -m compileall builtin.py
+    cd ${BUILD_PATH}
+    make all
+}
+
+_build
\ No newline at end of file