-# FIXME: Gnulib should be patched to add "/" in front of .gitignore entries
-# instead. Anyway, this hack must be done before invoking autoconf so that
-# build-aux/git-version-gen doesn't think the version is dirty because
-# .gitignore isn't committed.
-grep -v '^GNUmakefile$' .gitignore > .gitignore~ && mv .gitignore~ .gitignore
-