f http://mirrors.kernel.org/gnu/bison/bison-3.6.4.tar.xz 8b13473b31ca7fcf65e5e8a74224368ffd5df19275602a9c9567ba393f18577d
g https://https.git.savannah.gnu.org/git/gnulib.git~ffbb0ce _ 4c14c95b301e74804dd82d3993176b03cffedc18221bf573db35d21f2f8a930e gnulib-ffbb0ce.tar.gz
