diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8d7f8e1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+bin/ipcalc
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..8d2f7fd
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,7 @@
+build:
+	go build -o bin/ipcalc main.go
+
+run:
+	go run main.go
+
+all: build