Merge fb47e090de into 25ffb2c12c

INSTALL.md

@@ -625,6 +625,19 @@ make TOOLCHAIN="/usr/local/arm-none-eabi"
 ```
 To compile the `modern` target with this toolchain, the subdirectories `lib`, `include`, and `arm-none-eabi` must also be present.
 
+### Nix
+
+There is `default.nix` file included in the repo, you can build the project by running:
+```bash
+nix-build
+```
+
+If you want to build inside a development shell instead:
+```bash
+nix-shell
+buildPhase
+```
+
 ### Building with debug info under a modern toolchain
 
 To build **pokeemerald.elf** with debug symbols under a modern toolchain:

default.nix

@@ -0,0 +1,88 @@
+{ pkgs ? import <nixpkgs> {}, stdenv ? pkgs.stdenv }:
+
+let
+  nix-filter = import (pkgs.fetchFromGitHub {
+    owner = "numtide";
+    repo = "nix-filter";
+    rev = "3b821578685d661a10b563cba30b1861eec05748";
+    hash = "sha256-RizGJH/buaw9A2+fiBf9WnXYw4LZABB5kMAZIEE5/T8=";
+  });
+
+  # binutils-unwrapped-all-targets does not contain GNU as or ld on aarch64-darwin
+  # this might be an oversight as aarch64-apple-darwin is not supported target by GNU binutils
+  # https://github.com/NixOS/nixpkgs/issues/201753
+  arm-binutils = pkgs.binutils-unwrapped.overrideAttrs(o: {
+    configurePlatforms = [ "build" "host" ];
+    configureFlags = o.configureFlags ++ [
+      "--target=arm-none-eabi"
+      "--program-prefix=arm-none-eabi-"
+      "--disable-nls"
+    ];
+    doInstallCheck = false;
+  });
+
+  agbcc = stdenv.mkDerivation {
+    name = "agbcc";
+    dontConfigure = true;
+    nativeBuildInputs = with pkgs; [ bash arm-binutils ];
+    stripDebugList = [ "bin" ];
+    NIX_CFLAGS_COMPILE = [ "-Wno-format-security" ];
+    postPatch = "substituteInPlace libc/Makefile --replace /bin/bash bash";
+    buildPhase = "sh build.sh";
+
+    installPhase = ''
+      sh install.sh $TMPDIR
+      cp -r $TMPDIR/tools/agbcc $out
+    '';
+
+    src = pkgs.fetchFromGitHub {
+      owner = "pret";
+      repo = "agbcc";
+      rev = "d59cfb5ac1ce13d4bc9875ffef1666b118338d33";
+      hash = "sha256-pY8hAJaxGh4tZPM1v4uAgQvCsYs/9rzP3tWLYyM7h+M=";
+    };
+  };
+
+  arm-toolchain = let
+    cpp = pkgs.writeShellScript "cpp" ''${pkgs.gcc-unwrapped}/bin/gcc -E -nostdinc -I${agbcc} "$@"'';
+  in pkgs.runCommandLocal "wrap-cc" {} ''
+    mkdir -p $out/bin
+    ln -s ${agbcc}/bin/agbcc_arm $out/bin/arm-none-eabi-gcc
+    ln -s ${cpp} $out/bin/arm-none-eabi-cpp
+    for bin in ${arm-binutils}/bin/*; do
+      ln -s $bin $out/bin/$(basename $bin)
+    done
+  '';
+
+  pipefail-shell = pkgs.writeShellScript "pipefail-shell" ''${pkgs.bash}/bin/bash -o pipefail "$@"'';
+in stdenv.mkDerivation {
+  name = "pokemon-emerald";
+  dontConfigure = true;
+  nativeBuildInputs = with pkgs; [ pkg-config zlib libpng ];
+  preBuild = "rm -f tools/agbcc && ln -s ${agbcc} tools/agbcc";
+  makeFlags = [ "CC=cc" "CXX=c++" "TOOLCHAIN=${arm-toolchain}" "SHELL=${pipefail-shell}" ];
+  src = nix-filter {
+    root = ./.;
+    include = [
+      ./asm
+      ./common_syms
+      ./constants
+      ./data
+      ./gflib
+      ./graphics
+      ./include
+      ./libagbsyscall
+      ./sound
+      ./src
+      ./tools
+      ./Makefile
+      ./rom.sha1
+      (nix-filter.matchExt "mk")
+      (nix-filter.matchExt "txt")
+    ];
+  };
+  installPhase = ''
+    mkdir -p $out
+    cp pokeemerald.gba $out/pokemon-emerald.gba
+  '';
+}