f https://mirrors.kernel.org/gnu/m4/m4-1.4.19.tar.xz 63aede5c6d33b6d9b13511cd0be2cac046f2e70fd0a07aa9573a04a82783af96
g https://https.git.savannah.gnu.org/git/gnulib.git~3639c57 _ 97dfbad67832641bc7f73437617b78abeafb9946723f19cf4c2ceecfc65fa48d gnulib-3639c57.tar.gz
