Cleanup makefile

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protonmail.ch>

.gitignore

@@ -2,3 +2,4 @@ lotus
 **/*.h
 **/*.a
 **/*.pc
+build/.update-modules

Makefile

@@ -1,21 +1,41 @@
 all: build
+.PHONY: all
 
-blssigs: lib/bls-signatures/include/libbls_signatures.h
+BUILD_DEPS:=lib/bls-signatures/include/libbls_signatures.h
+BUILD_DEPS+=lib/sectorbuilder/include/sector_builder_ffi.h
 
-lib/bls-signatures/include/libbls_signatures.h: lib/bls-signatures/bls-signatures ;
+# git modules that need to be loaded
+MODULES:=
+
+lib/bls-signatures/include/libbls_signatures.h: lib/bls-signatures/bls-signatures
 	./scripts/install-bls-signatures.sh
+	@touch $@
 
-sectorbuilder: lib/sectorbuilder/include/sector_builder_ffi.h
+MODULES+=lib/bls-signatures/bls-signatures
 
-lib/sectorbuilder/include/sector_builder_ffi.h: lib/sectorbuilder lib/sectorbuilder/rust-fil-sector-builder ;
+
+lib/sectorbuilder/include/sector_builder_ffi.h: lib/sectorbuilder lib/sectorbuilder/rust-fil-sector-builder
 	./lib/sectorbuilder/build.sh
+	@touch $@
 
-lib/sectorbuilder:
-	git submodule update --init --recursive lib/sectorbuilder
+MODULES+=lib/sectorbuilder
+MODULES+=lib/sectorbuilder/rust-fil-sector-builder
 
-deps: blssigs sectorbuilder
+$(MODULES): build/.update-modules ;
 
-build: deps
+# dummy file that marks the last time modules were updated
+build/.update-modules:
+	git submodule update --init --recursive
+	touch $@
+
+deps: $(BUILD_DEPS)
+.PHONY: deps
+
+build: $(BUILD_DEPS)
 	go build -o lotus ./cmd/lotus
+.PHONY: build
 
-.PHONY: all build deps blssigs
+dist-clean:
+	git clean -xdff
+	git submodule deinit --all -f
+.PHONY: dist-clean