depot/third_party/nixpkgs/pkgs/development/em-modules/generic/default.nix

100 lines
2.3 KiB
Nix

{
pkgs,
lib,
emscripten,
python3,
}:
argsFun:
let
wrapDerivation = f: pkgs.stdenv.mkDerivation (finalAttrs: f (lib.toFunction argsFun finalAttrs));
in
wrapDerivation (
{
buildInputs ? [ ],
nativeBuildInputs ? [ ],
enableParallelBuilding ? true,
meta ? { },
...
}@args:
args
// {
pname = "emscripten-${lib.getName args}";
version = lib.getVersion args;
buildInputs = [
emscripten
python3
] ++ buildInputs;
nativeBuildInputs = [
emscripten
python3
] ++ nativeBuildInputs;
# fake conftest results with emscripten's python magic
EMCONFIGURE_JS = 2;
# removes archive indices
dontStrip = args.dontStrip or true;
configurePhase =
args.configurePhase or ''
# FIXME: Some tests require writing at $HOME
HOME=$TMPDIR
runHook preConfigure
emconfigure ./configure --prefix=$out
mkdir -p .emscriptencache
export EM_CACHE=$(pwd)/.emscriptencache
runHook postConfigure
'';
buildPhase =
args.buildPhase or ''
runHook preBuild
HOME=$TMPDIR
emmake make
runHook postBuild
'';
doCheck = true;
checkPhase =
args.checkPhase or ''
runHook preCheck
echo "Please provide a test for your emscripten based library/tool, see libxml2 as an exmple on how to use emcc/node to verify your build"
echo ""
echo "In normal C 'unresolved symbols' would yield an error and a breake of execution. In contrast, in emscripten they are only a warning which is ok given that emscripten assumptions about shared libraries."
echo " -> https://github.com/kripken/emscripten/wiki/Linking"
echo "So just assume the dependencies were built using hydra, then YOU WILL NEVER see the warning and your code depending on a library will always fail!"
exit 1
runHook postCheck
'';
enableParallelBuilding = args.enableParallelBuilding or true;
meta =
{
# Add default meta information
platforms = lib.platforms.all;
# Do not build this automatically
hydraPlatforms = [ ];
}
// meta
// {
# add an extra maintainer to every package
maintainers = (meta.maintainers or [ ]) ++ [ lib.maintainers.qknight ];
};
}
)