+HAVE_EVAL := NO
+$(eval HAVE_EVAL := YES)
+
+check-tools:
+ifeq "$(HSCOLOUR_SRCS) $(HSCOLOUR)" "YES "
+ @echo "HsColour needed but wasn't found."
+ @echo "Set HSCOLOUR_SRCS=NO if you don't want to use it"
+ exit 1
+endif
+ifeq "$(HAVE_EVAL)" "NO"
+ @echo "Your make doesn't support eval. You need GNU make >= 3.80"
+ exit 1
+endif
+ @:
+