Remove static make targets

Makefile

@@ -21,19 +21,19 @@ LATEXMK   = latexmk -deps -jobname="$(basename $1)" $2
 LATEXMKF  = export TARGET=$1 && export TYPE=$2 && $(call LATEXMK,$1,$(BASENAME))
 LATEXMKC  = export TARGET=$1 && export TYPE="" && $(call LATEXMK,$1,$2)
 
-all: build/ $(TARGETS)
+all: $(TARGETS)
 
 presentation:  $(BUILDDIR)/ $(BASENAME)-presentation.pdf
 handout: $(BUILDDIR)/ $(BASENAME)-handout.pdf
 notes:   $(BUILDDIR)/ $(BASENAME)-notes.pdf
 
-$(BASENAME)-presentation.pdf: .FORCE | $(BUILDDIR)
+$(BASENAME)-presentation.pdf: .FORCE | $(BUILDDIR)/
 	$(call LATEXMKF,$@,presentation)
 
-$(BASENAME)-handout.pdf: .FORCE | $(BUILDDIR)
+$(BASENAME)-handout.pdf: .FORCE | $(BUILDDIR)/
 	$(call LATEXMKF,$@,handout)
 
-$(BASENAME)-notes.pdf: .FORCE | $(BUILDDIR)
+$(BASENAME)-notes.pdf: .FORCE | $(BUILDDIR)/
 	$(call LATEXMKF,$@,notes)
 
 clean: