Improved Makefile: it recompiles when needed, and only when needed

Makefile

@@ -2,21 +2,29 @@ BINDIR?=/tmp/bin
 ETCDIR?=/tmp/etc
 INITDIR?=/tmp/etc/init.d
 
-dist/build/squeezed/squeezed:
+all: squeezed
+
+dist/setup: squeezed.obuild
 	obuild configure
+
+.PHONY: dist/build/squeezed/squeezed
+dist/build/squeezed/squeezed: dist/setup
 	obuild build
 
-dist/build/test/test:
-	obuild configure
+.PHONY: dist/build/test/test
+dist/build/test/test: dist/setup
 	obuild build
 
 test: dist/build/test/test
 	./dist/build/test/test
 
+squeezed: dist/build/squeezed/squeezed
+
 install: dist/build/squeezed/squeezed
 	install -D -m 0755 dist/build/squeezed/squeezed ${BINDIR}/squeezed
 	install -D -m 0644 scripts/squeezed.conf ${ETCDIR}/squeezed.conf
 	install -D -m 0755 scripts/init.d-squeezed ${INITDIR}/squeezed
+
 .PHONY: uninstall
 uninstall:
 	rm -f ${BINDIR}/squeezed
@@ -25,4 +33,4 @@ uninstall:
 
 .PHONY: clean
 clean:
-	rm -rf dist
+	obuild clean