build: add lint target

ober

20dea0c892c9a0a443a90f6b8bfc40c6555e3585

diff --git a/Makefile b/Makefile
index dd3e930..9eee4c8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,12 @@
-.PHONY: all build test
+.PHONY: all build test lint
 
 all:
 	@echo "jerboa-compat — Gerbil compatibility modules"
 	@echo "  make build  Compile all modules"
 	@echo "  make test   Compile and run regression tests"
 
+lint: build
+
 build:
 	gxi build.ss