040000 tree adb7a1b278303f3a76ee9e6d318de77b3a37359b	amalgamate
040000 tree 6442017f08d8048b3221dcc045203d479da9d5d1	cpplint
040000 tree ed65a08f6e52607a92fcf133acfa7aa93bf06272	gdb_pretty_printer
040000 tree 35e9111b98c36dfe5ce953586fffc2059619267b	macro_builder