Add archive Makefile command

.gitignore

@@ -65,3 +65,6 @@ xcuserdata
 # Carthage/Checkouts
 
 Carthage/Build
+
+contacts
+contacts.tar.gz

Makefile

@@ -1,25 +1,29 @@
-BUILD=build
-EXECUTABLE=contacts
-PREFIX?=/usr/local/bin
+EXECUTABLE = contacts
+ARCHIVE = $(EXECUTABLE).tar.gz
+PREFIX ?= /usr/local/bin
 
-.PHONY: build clean install uninstall
+.PHONY: archive clean install uninstall
 SRC=$(wildcard Sources/*.swift)
 
-build: $(SRC)
-	mkdir -p $(BUILD)
+$(EXECUTABLE): $(SRC)
 	swiftc \
 		-static-stdlib \
 		-O -whole-module-optimization \
-		-o $(BUILD)/$(EXECUTABLE) \
+		-o $(EXECUTABLE) \
 		-sdk $(shell xcrun --sdk macosx --show-sdk-path) \
 		-target x86_64-macosx10.10 \
 		$(SRC)
 
-install: build
-	install $(BUILD)/$(EXECUTABLE) $(PREFIX)
+install: $(EXECUTABLE)
+	install $(EXECUTABLE) $(PREFIX)
 
 uninstall:
 	rm "$(PREFIX)/$(EXECUTABLE)"
 
+archive: $(EXECUTABLE)
+	tar -pvczf $(ARCHIVE) $(EXECUTABLE)
+	@shasum -a 256 $(EXECUTABLE)
+	@shasum -a 256 $(ARCHIVE)
+
 clean:
-	rm -rf $(BUILD)
+	rm -rf $(ARCHIVE) $(EXECUTABLE)