forgot to add Makefile.coq.local

.gitignore

@@ -28,7 +28,8 @@ _*_.tex
 *.vio
 *.vos
 *.vok
-Makefile.coq*
+Makefile.coq
+Makefile.coq.conf
 .Makefile.coq.d
 *.crashcoqide
 .coqdeps.d

.gitlab-ci.yml

@@ -5,6 +5,7 @@ stages:
 
 variables:
   CPU_CORES: "10"
+  MAKE_TARGET: "ci"
 
 .template: &template
   stage: build

Makefile.coq.local

+# Generate an exercise for each solution.
+SOLUTIONS := $(wildcard solutions/*.v)
+EXERCISES := $(addprefix exercises/,$(notdir $(SOLUTIONS)))
+
+exercises: $(EXERCISES)
+.PHONY: exercises
+
+$(EXERCISES): exercises/%.v: solutions/%.v gen-exercises.awk
+	$(HIDE)echo "Generating exercise file $@ from $<"
+	$(HIDE)gawk -f gen-exercises.awk < $< > $@
+
+# CI make target
+ci: all
+	+@make -B exercises # force make (in case exercise files have been edited directly)
+	if [ -n "$$(git status --porcelain)" ]; then echo 'ERROR: Exercise files are not up-to-date with solutions.'; exit 1; fi