sources:
  "4.2.1":
    url: "http://ftpmirror.gnu.org/gnu/make/make-4.2.1.tar.bz2"
    sha256: "d6e262bf3601b42d2b1e4ef8310029e1dcf20083c5446b4b7aa67081fdffc589"
patches:
  "4.2.1":
    - patch_file: "patches/0001-clang.patch"
      base_path: "source_subfolder"