Make default target work in Makefile

Makefile

@@ -1,8 +1,10 @@
-.PHONY: clean, render
+.PHONY: default
 
 NAME=Masterarbeit
 LAST_EXPORT=`cat LAST_EXPORT`
 
+default: cleanall render
+
 render:
 	mkdir build
 	pdflatex -output-directory build ${NAME}.tex
@@ -14,9 +16,14 @@ diff:
 	cd build; git-latexdiff $(LAST_EXPORT) -- --main ${NAME}.tex --no-flatten -o diff.pdf; cd ..
 
 clean:
+	cd build; rm -v *.aux *.bbl *.blg *.log *.out *.toc
+
+cleanall:
 	rm -rfv build
 
-show:
+viewer:
 	okular build/${NAME}.pdf
 
-all: clean render show
+show: cleanall render viewer
+
+release: cleanall render clean