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emscripten: precompile libraries for wasm2c

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This commit is contained in:
Gabriel Ebner 2020-08-29 14:14:20 +02:00
parent fc0f11e3d5
commit ad33043403
1 changed files with 18 additions and 7 deletions
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25
pkgs/development/compilers/emscripten/default.nix
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@ -61,6 +61,10 @@ stdenv.mkDerivation rec {
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
# The tests use the C compiler to compile generated C code,
# use the wrapped compiler
sed -i 's/shared.CLANG_CC/"cc"/' tests/runner.py
'';
installPhase = ''
@ -77,16 +81,23 @@ stdenv.mkDerivation rec {
--set PYTHON ${python3}/bin/python
done
# precompile libc in all four variants:
# wasm, wasm-pic, wasm-lto, wasm-lto-pic
# 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 RELOCATABLE in "" "-s RELOCATABLE"; do
$out/bin/emcc $RELOCATABLE $LTO test.c
done
done
popd
export PYTHON=${python3}/bin/python
export NODE_PATH=${nodeModules}/node_modules
pushd $appdir
for lto in wasm2 wasmlto2; do
for pic in test_hello_world test_relocatable_void_function; do
python tests/runner.py $lto.$pic
done
done
python tests/runner.py test_hello_world
popd
'';