(package
    (name "zip")
    (version "3.0")
    (homepage "https://infozip.sourceforge.net/Zip.html")
    (dependencies make)
    (src (tar
        (url "https://downloads.sourceforge.net/infozip/zip30.tar.gz")
        (dir "zip30")
        (blake3 "c622bb4295213bc6d94e42a6da58d8bdb32fc6d8f7f37aa078238c31b05c9d91")))
    (build
        (shell "sed -i 's|\$CC \$BFLAG -o conftest conftest.c|\$CC \$BFLAG -Wno-implicit-function-declaration -o conftest conftest.c|' unix/configure")
        (shell "sed -i 's|\$CC -o conftest conftest.c|true|' unix/configure")
        (make
            (make_flags "-f unix/Makefile generic_gcc")
            (install_flags "-f unix/Makefile prefix=/usr"))))