From 1569a823aab7a41330f58a285378a854f57c3fe5 Mon Sep 17 00:00:00 2001
From: Waldemar Tomme <waldetomme@gmail.com>
Date: Wed, 8 Jan 2025 18:52:52 +0100
Subject: [PATCH] Start configuration of android kernel shell

---
 dev/default.nix | 99 +++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 96 insertions(+), 3 deletions(-)

diff --git a/dev/default.nix b/dev/default.nix
index d509562..7e1aacc 100644
--- a/dev/default.nix
+++ b/dev/default.nix
@@ -168,7 +168,7 @@
               rootDir="${rootDir}"
               mkdir -p "$rootDir/.repos"
               [[ -d "$rootDir/.repos/mainline-kernel" ]] || git clone git@github.com:WiiPlayer2/linux-sm7150.git "$rootDir/.repos/mainline-kernel"
-              # [[ -d "$rootDir/.repos/android-kernel" ]] || git clone ssh://git@git.web.home.dark-link.info:2222/a71-pmos/android-kernel-a71.git "$rootDir/.repos/android-kernel"
+              [[ -d "$rootDir/.repos/android-kernel" ]] || git clone ssh://git@git.web.home.dark-link.info:2222/a71-pmos/android-kernel-a71.git "$rootDir/.repos/android-kernel"
             '')
             (writeScriptBin "build-and-flash-kernel" ''
               #!/usr/bin/env bash
@@ -203,10 +203,103 @@
       # https://nixos.wiki/wiki/Cross_Compiling
       android =
         let
+          outputFolder = ".out";
         in
-          pkgs.pkgsCross.aarch64-android-prebuilt.mkShell {
+          (pkgs.buildFHSUserEnv {
+            name = "android-fhs";
+            multiPkgs = pkgs: with pkgs; [
+              pkgsCross.aarch64-multiplatform.buildPackages.gcc
+              bc
+              openssl
+              openssl.dev
+              python3
 
-          };
+              android-tools
+              libxcrypt-legacy # libcrypt.so.1
+              freetype # libfreetype.so.6
+              fontconfig # java NPE: "sun.awt.FontConfiguration.head" is null
+              yaml-cpp # necessary for some kernels according to a comment on the gist
+
+              # Some of the packages here are probably unecessary but I don't wanna figure out which
+              bc
+              binutils
+              bison
+              ccache
+              curl
+              flex
+              gcc
+              git
+              git-repo
+              git-lfs
+              gnumake
+              gnupg
+              gperf
+              imagemagick
+              jdk11
+              elfutils
+              libxml2
+              libxslt
+              lz4
+              lzop
+              m4
+              nettools
+              openssl.dev
+              perl
+              pngcrush
+              procps
+              python3
+              rsync
+              schedtool
+              SDL
+              squashfsTools
+              unzip
+              util-linux
+              xml2
+              zip
+
+              zlib
+              ncurses5
+              ncurses5.dev
+              libcxx
+              readline
+
+              libgcc # crtbeginS.o
+              iconv # ??? - i put this here and by the time i went back to remove unecessary packages i forgot why
+              iconv.dev # sys/types.h
+
+              (writeShellScriptBin "clean-kernel" ''
+                pushd .repos/android-kernel
+
+                mkdir -p "${outputFolder}"
+                make O="${outputFolder}" clean
+                make O="${outputFolder}" mrproper
+
+                popd
+              '')
+              (writeShellScriptBin "build-kernel" ''
+                pushd .repos/android-kernel
+
+                mkdir -p "${outputFolder}"
+                make O="${outputFolder}" a71_eur_open_defconfig
+                make O="${outputFolder}" -j$(nproc --all)
+
+                popd
+              '')
+              (writeShellScriptBin "configure-kernel" ''
+                pushd .repos/android-kernel
+
+                mkdir -p "${outputFolder}"
+                make O="${outputFolder}" menuconfig
+
+                popd
+              '')
+            ];
+            profile = ''
+              export CROSS_COMPILE=aarch64-unknown-linux-gnu-
+              export ARCH=arm64
+              export SUBARCH=arm64
+            '';
+          }).env;
     };
   };
 }