uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/compilers/emscripten/0001-emulate-clang-sysroot-include-logic.patch

@@ -0,0 +1,42 @@
+From 67f54fde2b1683aae3800f7a86a4e507c1125be8 Mon Sep 17 00:00:00 2001
+From: Yureka <yuka@yuka.dev>
+Date: Sat, 7 Aug 2021 09:16:46 +0200
+Subject: [PATCH] emulate clang 'sysroot + /include' logic
+
+Authored-By: Alexander Khovansky <alex@khovansky.me>
+Co-Authored-By: Yureka <yuka@yuka.dev>
+
+Clang provided by nix patches out logic that appends 'sysroot + /include'
+to the include path as well as automatic inclusion of libcxx includes (/include/c++/v1).
+The patch below adds that logic back by introducing cflags emulating this behavior to emcc
+invocations directly.
+
+Important note: with non-nix clang, sysroot/include dir ends up being the last
+in the include search order, right after the resource root.
+Hence usage of -idirafter. Clang also documents an -isystem-after flag
+but it doesn't appear to work
+---
+ emcc.py | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/emcc.py b/emcc.py
+index 999314afc..0e23c066c 100755
+--- a/emcc.py
++++ b/emcc.py
+@@ -759,7 +759,12 @@ def emsdk_ldflags(user_args):
+ 
+ 
+ def emsdk_cflags(user_args):
+-  cflags = ['--sysroot=' + shared.Cache.get_sysroot(absolute=True)]
++  cflags = [
++    '--sysroot=' + shared.Cache.get_sysroot(absolute=True),
++    '-resource-dir=@resourceDir@',
++    '-idirafter' + shared.Cache.get_sysroot(absolute=True) + os.path.join('/include'),
++    '-iwithsysroot' + os.path.join('/include','c++','v1')
++  ]
+ 
+   def array_contains_any_of(hay, needles):
+     for n in needles:
+-- 
+2.32.0
+

pkgs/development/compilers/emscripten/default.nix

@@ -0,0 +1,126 @@
+{ lib, stdenv, fetchFromGitHub, python3, nodejs, closurecompiler
+, jre, binaryen
+, llvmPackages
+, symlinkJoin, makeWrapper, substituteAll
+, mkYarnModules
+}:
+
+stdenv.mkDerivation rec {
+  pname = "emscripten";
+  version = "3.0.0";
+
+  llvmEnv = symlinkJoin {
+    name = "emscripten-llvm-${version}";
+    paths = with llvmPackages; [ clang-unwrapped clang-unwrapped.lib lld llvm ];
+  };
+
+  nodeModules = mkYarnModules {
+    name = "emscripten-node-modules-${version}";
+    inherit pname version;
+    # it is vitally important the the package.json has name and version fields
+    packageJSON = ./package.json;
+    yarnLock = ./yarn.lock;
+    yarnNix = ./yarn.nix;
+  };
+
+  src = fetchFromGitHub {
+    owner = "emscripten-core";
+    repo = "emscripten";
+    sha256 = "sha256-HlXcPKlmBTwEKgTfeMg6QoMKMbK++bpv2fu1DyolrHs=";
+    rev = version;
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ nodejs python3 ];
+
+  patches = [
+    (substituteAll {
+      src = ./0001-emulate-clang-sysroot-include-logic.patch;
+      resourceDir = "${llvmEnv}/lib/clang/${llvmPackages.release_version}/";
+    })
+  ];
+
+  buildPhase = ''
+    runHook preBuild
+
+    patchShebangs .
+
+    # fixes cmake support
+    sed -i -e "s/print \('emcc (Emscript.*\)/sys.stderr.write(\1); sys.stderr.flush()/g" emcc.py
+
+    # disables cache in user home, use installation directory instead
+    sed -i '/^def/!s/root_is_writable()/True/' tools/config.py
+    sed -i "/^def check_sanity/a\\  return" tools/shared.py
+
+    # required for wasm2c
+    ln -s ${nodeModules}/node_modules .
+
+    echo "EMSCRIPTEN_ROOT = '$out/share/emscripten'" > .emscripten
+    echo "LLVM_ROOT = '${llvmEnv}/bin'" >> .emscripten
+    echo "NODE_JS = '${nodejs}/bin/node'" >> .emscripten
+    echo "JS_ENGINES = [NODE_JS]" >> .emscripten
+    echo "CLOSURE_COMPILER = ['${closurecompiler}/bin/closure-compiler']" >> .emscripten
+    echo "JAVA = '${jre}/bin/java'" >> .emscripten
+    # to make the test(s) below work
+    # echo "SPIDERMONKEY_ENGINE = []" >> .emscripten
+    echo "BINARYEN_ROOT = '${binaryen}'" >> .emscripten
+
+    # make emconfigure/emcmake use the correct (wrapped) binaries
+    sed -i "s|^EMCC =.*|EMCC='$out/bin/emcc'|" tools/shared.py
+    sed -i "s|^EMXX =.*|EMXX='$out/bin/em++'|" tools/shared.py
+    sed -i "s|^EMAR =.*|EMAR='$out/bin/emar'|" tools/shared.py
+    sed -i "s|^EMRANLIB =.*|EMRANLIB='$out/bin/emranlib'|" tools/shared.py
+
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    appdir=$out/share/emscripten
+    mkdir -p $appdir
+    cp -r . $appdir
+    chmod -R +w $appdir
+
+    mkdir -p $out/bin
+    for b in em++ em-config emar embuilder.py emcc emcmake emconfigure emmake emranlib emrun emscons emsize; do
+      makeWrapper $appdir/$b $out/bin/$b \
+        --set NODE_PATH ${nodeModules}/node_modules \
+        --set EM_EXCLUSIVE_CACHE_ACCESS 1 \
+        --set PYTHON ${python3}/bin/python
+    done
+
+    # precompile libc (etc.) in all variants:
+    pushd $TMPDIR
+    echo 'int main() { return 42; }' >test.c
+    for LTO in -flto ""; do
+      # wasm2c doesn't work with PIC
+      $out/bin/emcc -s WASM2C -s STANDALONE_WASM $LTO test.c
+
+      for BIND in "" "--bind"; do
+        for MT in "" "-s USE_PTHREADS"; do
+          for RELOCATABLE in "" "-s RELOCATABLE"; do
+            $out/bin/emcc $RELOCATABLE $BIND $MT $LTO test.c
+          done
+        done
+      done
+    done
+    popd
+
+    export PYTHON=${python3}/bin/python
+    export NODE_PATH=${nodeModules}/node_modules
+    pushd $appdir
+    python tests/runner.py test_hello_world
+    popd
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/emscripten-core/emscripten";
+    description = "An LLVM-to-JavaScript Compiler";
+    platforms = platforms.all;
+    maintainers = with maintainers; [ qknight matthewbauer ];
+    license = licenses.ncsa;
+  };
+}

pkgs/development/compilers/emscripten/package.json

@@ -0,0 +1,21 @@
+{
+  "name": "emscripten",
+  "version": "2.0.26",
+  "private": true,
+  "devDependencies": {
+    "es-check": "^5.2.4",
+    "eslint": "^7.29.0",
+    "eslint-config-google": "^0.14.0",
+    "source-map": "0.5.7",
+    "ws": "~0.4.28"
+  },
+  "dependencies": {
+    "acorn": "8.4.1",
+    "google-closure-compiler": "20210601.0.0",
+    "html-minifier-terser": "5.1.1",
+    "wasm2c": "1.0.0"
+  },
+  "scripts": {
+    "lint": "eslint src/parseTools.js"
+  }
+}