Defined phony targets in Makefiles.

Makefile

@@ -4,7 +4,9 @@ d := docs/
 include base.mk
 include $(d)rules.mk
 
-all: doc
+.PHONY: all clean
+
+all: docs
 
 clean:
 	rm -rf $(BUILD)

docs/rules.mk

 .PHONY: docs
 
-doc: $(b)proposal.pdf
+docs: $(b)proposal.pdf $(b)report.pdf
 
 $(b)%.pdf: $(d)%.tex
 	mkdir -p `dirname $@`