Improve the local Makefile

Signed-off-by: Juan Cruz Viotti <[email protected]>

Makefile

@@ -1,7 +1,18 @@
-all: local
-# For local development, assuming https://github.com/sourcemeta/registry 
+CMAKE ?= cmake
+# For local development, assuming https://github.com/sourcemeta/registry
 # is cloned and built as a sibling directory of this repository
-local: .always
-	../registry/build/dist/bin/sourcemeta-registry-index configuration.json ./build
-	../registry/build/dist/bin/sourcemeta-registry-server ./build
-.always:
+REGISTRY ?= ../registry/build/dist/bin
+BUILD ?= ./build
+OUTPUT ?= $(BUILD)/registry
+
+.PHONY: all
+all: dev
+
+.PHONY: dev
+dev: configuration.json
+	$(REGISTRY)/sourcemeta-registry-index $< $(OUTPUT)
+	$(REGISTRY)/sourcemeta-registry-server $(OUTPUT)
+
+.PHONY: clean
+clean:
+	$(CMAKE) -E rm -R -f $(BUILD)