modify
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..643a3dc
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,15 @@
+CARGO ?=cargo
+RM ?=rm
+
+.PHONY: clean
+
+
+build:
+	$(CARGO) build --release
+
+android:
+	$(CARGO) build --target aarch64-linux-android --release -- -C prefer-dynamic
+	$(CARGO) build --target armv7-linux-androideabi --release -- -C prefer-dynamic
+
+clean:
+	$(RM) -rf target