improve build support

.gitignore

@@ -25,7 +25,8 @@ _testmain.go
 
 *.swp
 
-bin/
+bin/*
+!bin/.gitkeep
 
 www/public/
 www/data/

Makefile

@@ -8,12 +8,14 @@ endif
 	test \
 	docs \
 	readme \
-	release
+	release \
+	release-linux \
+	release-darwin
 
 all: bin/pomo
 
 clean: 
-	-rm -fv bin/* docs/*
+	-rm -rfv bin/* docs/*
 
 bindata.go: tomato-icon.png
 	go-bindata -pkg main -o $@ $^
@@ -22,15 +24,27 @@ test:
 	go test ./...
 	go vet ./...
 
-release-linux: bin bindata.go
-	go build -ldflags "-X main.Version=$(VERSION)" -o bin/pomo-$(VERSION)-linux-amd64
+bin/pomo-$(VERSION)-linux-amd64: bin bindata.go
+	go build -ldflags "-X main.Version=$(VERSION)" -o $@
 
-release-osx: bin bindata.go
+bin/pomo-$(VERSION)-linux-amd64.md5:
+	md5sum bin/pomo-$(VERSION)-linux-amd64 > $@
+
+bin/pomo-$(VERSION)-darwin-amd64: bin bindata.go
 	# This is used to cross-compile a Darwin compatible Mach-O executable 
 	# on Linux for OSX, you need to install https://github.com/tpoechtrager/osxcross
-	PATH="$$PATH:/usr/local/osx-ndk-x86/bin" GOOS=darwin GOARCH=amd64 CC=/usr/local/osx-ndk-x86/bin/x86_64-apple-darwin15-cc CGO_ENABLED=1 go build $(FLAGS) -o bin/pomo-$(VERSION)-darwin-amd64
+	PATH="$$PATH:/usr/local/osx-ndk-x86/bin" GOOS=darwin GOARCH=amd64 CC=/usr/local/osx-ndk-x86/bin/x86_64-apple-darwin15-cc CGO_ENABLED=1 go build $(FLAGS) -o $@
 
 
+bin/pomo-$(VERSION)-darwin-amd64.md5:
+	md5sum bin/pomo-$(VERSION)-darwin-amd64 > $@
+
+release-linux: bin/pomo-$(VERSION)-linux-amd64 bin/pomo-$(VERSION)-linux-amd64
+
+release-darwin: bin/pomo-$(VERSION)-darwin-amd64 bin/pomo-$(VERSION)-darwin-amd64
+
+release: release-linux release-darwin
+
 docs: readme
 	cd www && hugo -d ../docs