diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..a35c5a6
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,16 @@
+.PHONY: default clean
+
+CFLAGS+=-ansi -pedantic -Wall -Wextra -Werror -Wno-unused-result
+CFLAGS+=-pipe -O2
+CFLAGS+=-D_BSD_SOURCE
+
+default: map
+
+keys:
+	bash genkeys.sh
+
+map: map.c keys
+	$(CC) map.c $(CFLAGS) -o map
+
+clean:
+	rm -f map def_keys.h
diff --git a/map.c b/map.c
index 3efd35a..a6af83f 100644
--- a/map.c
+++ b/map.c
@@ -59,6 +59,8 @@ static int js[JOYCOUNT];
 
 void free_js(int sig) {
     int j;
+
+    (void) sig;
     for(j = 0; j < JOYCOUNT; j++) {
         printf("Freeing joystick: %d\n", j);
         if (ioctl(js[j], UI_DEV_DESTROY) < 0) {
@@ -90,6 +92,11 @@ int main(int argc, char** argv) {
         0
     };
 
+    (void)argc;
+    (void)argv;
+
+    (void)get_key_num;
+
     if(signal(SIGINT, free_js)) {
         printf("Atexit registration failed\n");
         return 1;