.gitignore

+a.out

.gitlab-ci.yml

+image: debian:latest
+
+before_script:
+  - apt update > /dev/null
+  - apt install -y  build-essential make libglu1-mesa-dev freeglut3-dev libpthread-stubs0-dev > /dev/null
+
+build_sim:
+  script:
+    - make sim

Makefile

@@ -24,4 +24,4 @@ flash: $(TARGET).hex
 	avrdude -p $(MCU) -P $(PORT) -c avrisp -b 19200 -U flash:w:$(TARGET).hex
 
 sim:
-	gcc main.c gol.c draw.c helpMath.c sim.c demo.c -g -D SIMULATION -lglut -lGL -lm -lGLU -Werror -Wextra
\ No newline at end of file
+	gcc main.c gol.c draw.c helpMath.c sim.c -g -D SIMULATION -lglut -lGL -lm -lGLU -Werror -Wextra