1 files changed, 12 insertions, 4 deletions
diff --git a/Makefile b/Makefile
index 8792f2e..d172224 100644
--- a/Makefile
+++ b/Makefile
@@ -1,16 +1,24 @@
 .POSIX:
 
 CFLAGS = -Wall -Wextra -pedantic -O2 -g
+LIBS = -lraylib -lm -lpthread -lGLESv2 -lEGL \
+       -lical -licalss -licalvcal \
+       $$([ `uname -m` = aarch64 ] && echo '-lvcos -lvchiq_arm -lgbm -ldrm')
+
+all: check_ical opplysning
 
-all: opplysning
+check: all
+	./check_ical < check_ical_in.ical > check_ical_out.txt
+	diff -u check_ical_ans.txt check_ical_out.txt && echo PASS || echo FAIL
 
 clean:
+	rm -f check_ical check_ical_out.txt
 	rm -f opplysning
 
-.PHONY: all clean
+.PHONY: all check clean
 
-LIBS = -lraylib -lm -lpthread -lGLESv2 -lEGL \
-       $$([ `uname -m` = aarch64 ] && echo '-lvcos -lvchiq_arm -lgbm -ldrm')
+check_ical: check_ical.c
+	$(CC) $(CFLAGS) -o $@ check_ical.c $(LIBS)
 
 opplysning: opplysning.c
 	$(CC) $(CFLAGS) -o $@ opplysning.c $(LIBS)