040000 tree 501a2980f52e7783e23a5dea5d2678d28a86d6da	amalgamate
040000 tree 84ebdfb74c380c262dc95ef1079eeb2a23642346	cpplint
040000 tree 0286722e916279bcc13704c89c8e6161c16636cc	gdb_pretty_printer
040000 tree 35e9111b98c36dfe5ce953586fffc2059619267b	macro_builder
040000 tree a72b9107a91070a2ed0beda55b83337803461c53	serve_header