Add doxygen build target

Makefile.standalone

Index: Makefile.standalone
diff --git a/Makefile.standalone b/Makefile.standalone
index 5f2686ba8f7788db34b49715bed3689905a65640..a1957f0a50b3dbbbc5f2594d614b78325c2ce5c3 100644
--- a/Makefile.standalone
+++ b/Makefile.standalone
@@ -234,7 +234,7 @@ make_symlink: $(OBJDIR)/pnacl-sz
 	@echo "Build Attributes:"
 	@$(OBJDIR)/pnacl-sz --build-atts
 
-.PHONY: all make_symlink runtime bloat sb
+.PHONY: all make_symlink runtime bloat sb docs
 
 $(OBJDIR)/pnacl-sz: $(OBJS)
 	$(CXX) $(LDFLAGS) -o $@ $^ $(LLVM_LDFLAGS) \
@@ -338,6 +338,9 @@ bloat: make_symlink
 	bloat/bloat.py --nm-output=/dev/stdin syms > build/pnacl-sz.bloat.json
 	@echo See Subzero size breakdown in bloat/pnacl-sz.bloat.html
 
+docs: make_symlink Doxyfile

[Jim Stichnoth, 2015/06/24 20:36:55]

Can probably omit the make_symlink dependency, since (I assume) doxygen doesn't
require pnacl-sz to be built.

Also, it would be nice if it could be made to rerun doxygen only if some file in
$(SRCS) or src/*.h or src/*.def changes.

+	doxygen Doxyfile

[Jim Stichnoth, 2015/06/24 20:36:55]

Would be nice to @echo the html file to load in the browser, similar to the
bloat target above.

+
 clean:
 	rm -rf pnacl-sz *.o $(OBJDIR) $(SB_OBJDIR) build/pnacl-sz.bloat.json