Old GCC cross compiler overlay

gcc-cross.nix

self: super:

let target-gcc = arch:
  let target = {
    config = arch;
    libc = null;
    isDarwin = false;
  };
  binutils = self.pkgs.binutils.override {
    targetPlatform = target;
  };
  in self.pkgs.wrapCCCross {
    name = "gcc-" + arch;
    cc = self.pkgs.gcc7.cc.override {
      targetPlatform = target;
      crossStageStatic = true;
      langCC = false;
      langC = true;
      libcCross = null;
      enableShared = false;
      binutils = binutils;
    };
    binutils = binutils;
    libc = null;
  };
in
{
  gcc-cross = {
    i686 = target-gcc "i686-elf";
    riscv = target-gcc "riscv64-elf";
    arm = target-gcc "arm-none-eabi";
    redox = target-gcc "x86_64-elf-redox";
  };
}