sources:
  "1.4.18":
    url: "http://ftp.gnu.org/gnu/m4/m4-1.4.18.tar.bz2"
    sha256: "6640d76b043bc658139c8903e293d5978309bf0f408107146505eca701e67cf6"
patches:
  "1.4.18":
    - patch_file: "patches/0001-fflush-adjust-to-glibc-2.28-libio.h-removal.patch"
      base_path: "source_subfolder"
    - patch_file: "patches/0002-fflush-be-more-paranoid-about-libio.h-change.patch"
      base_path: "source_subfolder"
    - patch_file: "patches/0004-fix-checks.patch"
      base_path: "source_subfolder"
    - patch_file: "patches/0005-vasnprintf-Fix-for-MSVC-14.patch"
      base_path: "source_subfolder"
    - patch_file: "patches/0006-manywarnings-update-for-gcc-7.patch"
      base_path: "source_subfolder"
    - patch_file: "patches/0007-vasnprintf-port-to-macos-10.13.patch"
      base_path: "source_subfolder"
    - patch_file: "patches/0008-open-files-in-binary-mode.patch"
      base_path: "source_subfolder"
    - patch_file: "patches/0009-disable-hardening-in-source.patch"
      base_path: "source_subfolder"
