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Emscripten 1.37.16 to 1.37.36 (#37291)

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* trying to build emscriptenPackages not all fail

* reading the console.log it turns out python executable is not in place and that is why emconfigure didnt work

* backup commit

* much more targets are compiling now

* added common revisioning

* revision bump to 1.37.36 (not tested)

* fixed xmllint

* forcing unit testing, will implement the tests after i get home

* json_c test working

* added tests

* tiny fixes

* added documentation
This commit is contained in:
Joachim Schiele 2018-03-18 13:34:46 +01:00 committed by GitHub
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4
doc/default.nix
View file

@ -81,6 +81,10 @@ pkgs.stdenv.mkDerivation {
inputFile = ./languages-frameworks/vim.md;
outputFile = "./languages-frameworks/vim.xml";
}
+ toDocbook {
inputFile = ./languages-frameworks/emscripten.md;
outputFile = "./languages-frameworks/emscripten.xml";
}
+ ''
echo ${lib.nixpkgsVersion} > .version

185
doc/languages-frameworks/emscripten.md Normal file
View file

@ -0,0 +1,185 @@
# User's Guide to Emscripten in Nixpkgs
[Emscripten](https://github.com/kripken/emscripten): An LLVM-to-JavaScript Compiler
This section of the manual covers how to use `emscripten` in nixpkgs.
Minimal requirements:
* nix
* nixpkgs
Modes of use of `emscripten`:
* **Imperative usage** (on the command line):
If you want to work with `emcc`, `emconfigure` and `emmake` as you are used to from Ubuntu and similar distributions you can use these commands:
* `nix-env -i emscripten`
* `nix-shell -p emscripten`
* **Declarative usage**:
This mode is far more power full since this makes use of `nix` for dependency management of emscripten libraries and targets by using the `mkDerivation` which is implemented by `pkgs.emscriptenStdenv` and `pkgs.buildEmscriptenPackage`. The source for the packages is in `pkgs/top-level/emscripten-packages.nix` and the abstraction behind it in `pkgs/development/em-modules/generic/default.nix`.
* build and install all packages:
* `nix-env -iA emscriptenPackages`
* dev-shell for zlib implementation hacking:
* `nix-shell -A emscriptenPackages.zlib`
## Imperative usage
A few things to note:
* `export EMCC_DEBUG=2` is nice for debugging
* `~/.emscripten`, the build artifact cache sometimes creates issues and needs to be removed from time to time
## Declarative usage
Let's see two different examples from `pkgs/top-level/emscripten-packages.nix`:
* `pkgs.zlib.override`
* `pkgs.buildEmscriptenPackage`
Both are interesting concepts.
A special requirement of the `pkgs.buildEmscriptenPackage` is the `doCheck = true` is a default meaning that each emscriptenPackage requires a `checkPhase` implemented.
* Use `export EMCC_DEBUG=2` from within a emscriptenPackage's `phase` to get more detailed debug output what is going wrong.
* ~/.emscripten cache is requiring us to set `HOME=$TMPDIR` in individual phases. This makes compilation slower but also makes it more deterministic.
### Usage 1: pkgs.zlib.override
This example uses `zlib` from nixpkgs but instead of compiling **C** to **ELF** it compiles **C** to **JS** since we were using `pkgs.zlib.override` and changed stdenv to `pkgs.emscriptenStdenv`. A few adaptions and hacks were set in place to make it working. One advantage is that when `pkgs.zlib` is updated, it will automatically update this package as well. However, this can also be the downside...
See the `zlib` example:
zlib = (pkgs.zlib.override {
stdenv = pkgs.emscriptenStdenv;
}).overrideDerivation
(old: rec {
buildInputs = old.buildInputs ++ [ pkgconfig ];
# we need to reset this setting!
NIX_CFLAGS_COMPILE="";
configurePhase = ''
# FIXME: Some tests require writing at $HOME
HOME=$TMPDIR
runHook preConfigure
#export EMCC_DEBUG=2
emconfigure ./configure --prefix=$out --shared
runHook postConfigure
'';
dontStrip = true;
outputs = [ "out" ];
buildPhase = ''
emmake make
'';
installPhase = ''
emmake make install
'';
checkPhase = ''
echo "================= testing zlib using node ================="
echo "Compiling a custom test"
set -x
emcc -O2 -s EMULATE_FUNCTION_POINTER_CASTS=1 test/example.c -DZ_SOLO \
libz.so.${old.version} -I . -o example.js
echo "Using node to execute the test"
${pkgs.nodejs}/bin/node ./example.js
set +x
if [ $? -ne 0 ]; then
echo "test failed for some reason"
exit 1;
else
echo "it seems to work! very good."
fi
echo "================= /testing zlib using node ================="
'';
postPatch = pkgs.stdenv.lib.optionalString pkgs.stdenv.isDarwin ''
substituteInPlace configure \
--replace '/usr/bin/libtool' 'ar' \
--replace 'AR="libtool"' 'AR="ar"' \
--replace 'ARFLAGS="-o"' 'ARFLAGS="-r"'
'';
});
### Usage 2: pkgs.buildEmscriptenPackage
This `xmlmirror` example features a emscriptenPackage which is defined completely from this context and no `pkgs.zlib.override` is used.
xmlmirror = pkgs.buildEmscriptenPackage rec {
name = "xmlmirror";
buildInputs = [ pkgconfig autoconf automake libtool gnumake libxml2 nodejs openjdk json_c ];
nativeBuildInputs = [ pkgconfig zlib ];
src = pkgs.fetchgit {
url = "https://gitlab.com/odfplugfest/xmlmirror.git";
rev = "4fd7e86f7c9526b8f4c1733e5c8b45175860a8fd";
sha256 = "1jasdqnbdnb83wbcnyrp32f36w3xwhwp0wq8lwwmhqagxrij1r4b";
};
configurePhase = ''
rm -f fastXmlLint.js*
# a fix for ERROR:root:For asm.js, TOTAL_MEMORY must be a multiple of 16MB, was 234217728
# https://gitlab.com/odfplugfest/xmlmirror/issues/8
sed -e "s/TOTAL_MEMORY=234217728/TOTAL_MEMORY=268435456/g" -i Makefile.emEnv
# https://github.com/kripken/emscripten/issues/6344
# https://gitlab.com/odfplugfest/xmlmirror/issues/9
sed -e "s/\$(JSONC_LDFLAGS) \$(ZLIB_LDFLAGS) \$(LIBXML20_LDFLAGS)/\$(JSONC_LDFLAGS) \$(LIBXML20_LDFLAGS) \$(ZLIB_LDFLAGS) /g" -i Makefile.emEnv
# https://gitlab.com/odfplugfest/xmlmirror/issues/11
sed -e "s/-o fastXmlLint.js/-s EXTRA_EXPORTED_RUNTIME_METHODS='[\"ccall\", \"cwrap\"]' -o fastXmlLint.js/g" -i Makefile.emEnv
'';
buildPhase = ''
HOME=$TMPDIR
make -f Makefile.emEnv
'';
outputs = [ "out" "doc" ];
installPhase = ''
mkdir -p $out/share
mkdir -p $doc/share/${name}
cp Demo* $out/share
cp -R codemirror-5.12 $out/share
cp fastXmlLint.js* $out/share
cp *.xsd $out/share
cp *.js $out/share
cp *.xhtml $out/share
cp *.html $out/share
cp *.json $out/share
cp *.rng $out/share
cp README.md $doc/share/${name}
'';
checkPhase = ''
'';
};
### Declarative debugging
Use `nix-shell -I nixpkgs=/some/dir/nixpkgs -A emscriptenPackages.libz` and from there you can go trough the individual steps. This makes it easy to build a good `unit test` or list the files of the project.
1. `nix-shell -I nixpkgs=/some/dir/nixpkgs -A emscriptenPackages.libz`
2. `cd /tmp/`
3. `unpackPhase`
4. cd libz-1.2.3
5. `configurePhase`
6. `buildPhase`
7. ... happy hacking...
## Summary
Using this toolchain makes it easy to leverage `nix` from NixOS, MacOSX or even Windows (WSL+ubuntu+nix). This toolchain is reproducible, behaves like the rest of the packages from nixpkgs and contains a set of well working examples to learn and adapt from.
If in trouble, ask the maintainers.

1
doc/languages-frameworks/index.xml
View file

@ -30,6 +30,7 @@ such as Perl or Haskell. These are described in this chapter.</para>
<xi:include href="rust.xml" />
<xi:include href="texlive.xml" />
<xi:include href="vim.xml" />
<xi:include href="emscripten.xml" />
</chapter>

17
pkgs/development/compilers/emscripten-fastcomp/emscripten-fastcomp.nix
View file

@ -1,7 +1,7 @@
{ stdenv, fetchFromGitHub, cmake, python, ... }:
{ emscriptenVersion, stdenv, llvm, fetchFromGitHub, cmake, python, gtest, ... }:
let
rev = "1.37.16";
rev = emscriptenVersion;
gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
in
stdenv.mkDerivation rec {
@ -10,18 +10,18 @@ stdenv.mkDerivation rec {
src = fetchFromGitHub {
owner = "kripken";
repo = "emscripten-fastcomp";
sha256 = "0wj9sc0gciaiidcjv6wb0qn6ks06xds7q34351masc7qpvd217by";
sha256 = "04j698gmp686b5lricjakm5hyh2z2kh28m1ffkghmkyz4zkzmx98";
inherit rev;
};
srcFL = fetchFromGitHub {
owner = "kripken";
repo = "emscripten-fastcomp-clang";
sha256 = "1akdgxzxhzjbhp4d14ajcrp9jrf39x004a726ly2gynqc185l4j7";
sha256 = "1ici51mmpgg80xk3y8f376nbbfak6rz27qdy98l8lxkrymklp5g5";
inherit rev;
};
nativeBuildInputs = [ cmake python ];
nativeBuildInputs = [ cmake python gtest ];
preConfigure = ''
cp -Lr ${srcFL} tools/clang
chmod +w -R tools/clang
@ -30,9 +30,10 @@ stdenv.mkDerivation rec {
"-DCMAKE_BUILD_TYPE=Release"
"-DLLVM_TARGETS_TO_BUILD='X86;JSBackend'"
"-DLLVM_INCLUDE_EXAMPLES=OFF"
"-DLLVM_INCLUDE_TESTS=OFF"
# "-DCLANG_INCLUDE_EXAMPLES=OFF"
"-DCLANG_INCLUDE_TESTS=OFF"
"-DLLVM_INCLUDE_TESTS=ON"
#"-DLLVM_CONFIG=${llvm}/bin/llvm-config"
"-DLLVM_BUILD_TESTS=ON"
"-DCLANG_INCLUDE_TESTS=ON"
] ++ (stdenv.lib.optional stdenv.isLinux
# necessary for clang to find crtend.o
"-DGCC_INSTALL_PREFIX=${gcc}"

24
pkgs/development/compilers/emscripten/default.nix
View file

@ -1,9 +1,9 @@
{ stdenv, fetchFromGitHub, emscriptenfastcomp, python, nodejs, closurecompiler
, jre, binaryen, enableWasm ? true
{ emscriptenVersion, stdenv, fetchFromGitHub, emscriptenfastcomp, python, nodejs, closurecompiler, pkgs
, jre, binaryen, enableWasm ? true , python2Packages, cmake
}:
let
rev = "1.37.16";
rev = emscriptenVersion;
appdir = "share/emscripten";
in
@ -13,10 +13,12 @@ stdenv.mkDerivation {
src = fetchFromGitHub {
owner = "kripken";
repo = "emscripten";
sha256 = "1qyhjx5zza01vnwmj6qzxbkagxknn4kzb6gw12fqw5q8pa8fy4zy";
sha256 = "02p0cp86vd1mydlpq544xbydggpnrq9dhbxx7h08j235frjm5cdc";
inherit rev;
};
buildInputs = [ nodejs cmake python ];
buildCommand = ''
mkdir -p $out/${appdir}
cp -r $src/* $out/${appdir}
@ -38,9 +40,23 @@ stdenv.mkDerivation {
echo "COMPILER_ENGINE = NODE_JS" >> $out/${appdir}/config
echo "CLOSURE_COMPILER = '${closurecompiler}/share/java/closure-compiler-v${closurecompiler.version}.jar'" >> $out/${appdir}/config
echo "JAVA = '${jre}/bin/java'" >> $out/${appdir}/config
# to make the test(s) below work
echo "SPIDERMONKEY_ENGINE = []" >> $out/${appdir}/config
''
+ stdenv.lib.optionalString enableWasm ''
echo "BINARYEN_ROOT = '${binaryen}'" >> $out/share/emscripten/config
''
+
''
echo "--------------- running test -----------------"
# quick hack to get the test working
HOME=$TMPDIR
cp $out/${appdir}/config $HOME/.emscripten
export PATH=$PATH:$out/bin
#export EMCC_DEBUG=2
${python}/bin/python $src/tests/runner.py test_hello_world
echo "--------------- /running test -----------------"
'';
meta = with stdenv.lib; {

15
pkgs/development/em-modules/generic/default.nix
View file

@ -1,4 +1,4 @@
{ pkgs, lib, emscripten }:
{ pkgs, lib, emscripten, python }:
{ buildInputs ? [], nativeBuildInputs ? []
@ -11,8 +11,8 @@ pkgs.stdenv.mkDerivation (
{
name = "emscripten-${args.name}";
buildInputs = [ emscripten ] ++ buildInputs;
nativeBuildInputs = [ emscripten ] ++ nativeBuildInputs;
buildInputs = [ emscripten python ] ++ buildInputs;
nativeBuildInputs = [ emscripten python ] ++ nativeBuildInputs;
# fake conftest results with emscripten's python magic
EMCONFIGURE_JS=2;
@ -38,9 +38,18 @@ pkgs.stdenv.mkDerivation (
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
'';

2
pkgs/top-level/all-packages.nix
View file

@ -2079,6 +2079,8 @@ with pkgs;
buildEmscriptenPackage = callPackage ../development/em-modules/generic { };
emscriptenVersion = "1.37.36";
emscripten = callPackage ../development/compilers/emscripten { };
emscriptenfastcompPackages = callPackage ../development/compilers/emscripten-fastcomp { };

130
pkgs/top-level/emscripten-packages.nix
View file

@ -1,49 +1,92 @@
{ pkgs }:
with pkgs;
# emscripten toolchain abstraction for nix
# https://github.com/NixOS/nixpkgs/pull/16208
with pkgs; rec {
json_c = pkgs.json_c.override {
stdenv = emscriptenStdenv;
};
rec {
json_c = (pkgs.json_c.override {
stdenv = pkgs.emscriptenStdenv;
}).overrideDerivation
(old: {
nativeBuildInputs = [ autoreconfHook pkgconfig ];
propagatedBuildInputs = [ zlib ];
buildInputs = old.buildInputs ++ [ automake autoconf ];
configurePhase = ''
HOME=$TMPDIR
emconfigure ./configure --prefix=$out
'';
checkPhase = ''
echo "================= testing json_c using node ================="
echo "Compiling a custom test"
set -x
emcc -O2 -s EMULATE_FUNCTION_POINTER_CASTS=1 tests/test1.c \
`pkg-config zlib --cflags` \
`pkg-config zlib --libs` \
-I . \
.libs/libjson-c.so \
-o ./test1.js
echo "Using node to execute the test which basically outputs an error on stderr which we grep for"
${pkgs.nodejs}/bin/node ./test1.js
set +x
if [ $? -ne 0 ]; then
echo "test1.js execution failed -> unit test failed, please fix"
exit 1;
else
echo "test1.js execution seems to work! very good."
fi
echo "================= /testing json_c using node ================="
'';
});
libxml2 = (pkgs.libxml2.override {
stdenv = emscriptenStdenv;
pythonSupport = false;
}).overrideDerivation
(old: {
nativeBuildInputs = old.nativeBuildInputs ++ [ autoreconfHook pkgconfig ];
buildInputs = old.buildInputs ++ [ zlib nodejs ];
propagatedBuildInputs = [ zlib ];
buildInputs = old.buildInputs ++ [ pkgconfig ];
# just override it with nothing so it does not fail
autoreconfPhase = "echo autoreconfPhase not used...";
configurePhase = ''
HOME=$TMPDIR
emconfigure ./configure --prefix=$out --without-python
'';
checkPhase = ''
echo "================= testing xmllint using node ================="
echo "================= testing libxml2 using node ================="
echo "Compiling a custom test"
set -x
emcc -O2 -s EMULATE_FUNCTION_POINTER_CASTS=1 xmllint.o \
./.libs/libxml2.a `pkg-config zlib --cflags` `pkg-config zlib --libs` -o ./xmllint.test.js \
--embed-file ./test/xmlid/id_err1.xml
# test/xmlid/id_err2.xml:3: validity error : xml:id : attribute type should be ID
# <!ATTLIST foo xml:id CDATA #IMPLIED>
# ^
node ./xmllint.test.js --noout test/xmlid/id_err1.xml 2>&1 | grep 0bar
echo "Using node to execute the test which basically outputs an error on stderr which we grep for"
${pkgs.nodejs}/bin/node ./xmllint.test.js --noout test/xmlid/id_err1.xml 2>&1 | grep 0bar
set +x
if [ $? -ne 0 ]; then
echo "xmllint unit test failed, please fix this package"
exit 1;
else
echo "since there is no stupid text containing 'foo xml:id' it seems to work! very good."
fi
echo "================= /testing xmllint using node ================="
echo "================= /testing libxml2 using node ================="
'';
});
xmlmirror = buildEmscriptenPackage rec {
xmlmirror = pkgs.buildEmscriptenPackage rec {
name = "xmlmirror";
nativeBuildInputs = [ pkgconfig ];
buildInputs = [ autoconf automake libtool gnumake libxml2 nodejs
python openjdk json_c zlib ];
buildInputs = [ pkgconfig autoconf automake libtool gnumake libxml2 nodejs openjdk json_c ];
nativeBuildInputs = [ pkgconfig zlib ];
src = fetchgit {
src = pkgs.fetchgit {
url = "https://gitlab.com/odfplugfest/xmlmirror.git";
rev = "4fd7e86f7c9526b8f4c1733e5c8b45175860a8fd";
sha256 = "1jasdqnbdnb83wbcnyrp32f36w3xwhwp0wq8lwwmhqagxrij1r4b";
@ -51,6 +94,14 @@ with pkgs; rec {
configurePhase = ''
rm -f fastXmlLint.js*
# a fix for ERROR:root:For asm.js, TOTAL_MEMORY must be a multiple of 16MB, was 234217728
# https://gitlab.com/odfplugfest/xmlmirror/issues/8
sed -e "s/TOTAL_MEMORY=234217728/TOTAL_MEMORY=268435456/g" -i Makefile.emEnv
# https://github.com/kripken/emscripten/issues/6344
# https://gitlab.com/odfplugfest/xmlmirror/issues/9
sed -e "s/\$(JSONC_LDFLAGS) \$(ZLIB_LDFLAGS) \$(LIBXML20_LDFLAGS)/\$(JSONC_LDFLAGS) \$(LIBXML20_LDFLAGS) \$(ZLIB_LDFLAGS) /g" -i Makefile.emEnv
# https://gitlab.com/odfplugfest/xmlmirror/issues/11
sed -e "s/-o fastXmlLint.js/-s EXTRA_EXPORTED_RUNTIME_METHODS='[\"ccall\", \"cwrap\"]' -o fastXmlLint.js/g" -i Makefile.emEnv
'';
buildPhase = ''
@ -75,25 +126,58 @@ with pkgs; rec {
cp *.rng $out/share
cp README.md $doc/share/${name}
'';
postInstall = ''
checkPhase = ''
'';
};
zlib = (pkgs.zlib.override {
stdenv = emscriptenStdenv;
stdenv = pkgs.emscriptenStdenv;
}).overrideDerivation
(old: {
(old: rec {
buildInputs = old.buildInputs ++ [ pkgconfig ];
# we need to reset this setting!
NIX_CFLAGS_COMPILE="";
configurePhase = ''
# FIXME: Some tests require writing at $HOME
HOME=$TMPDIR
runHook preConfigure
emconfigure ./configure --prefix=$out
#export EMCC_DEBUG=2
emconfigure ./configure --prefix=$out --shared
runHook postConfigure
'';
postPatch = stdenv.lib.optionalString stdenv.isDarwin ''
dontStrip = true;
outputs = [ "out" ];
buildPhase = ''
emmake make
'';
installPhase = ''
emmake make install
'';
checkPhase = ''
echo "================= testing zlib using node ================="
echo "Compiling a custom test"
set -x
emcc -O2 -s EMULATE_FUNCTION_POINTER_CASTS=1 test/example.c -DZ_SOLO \
libz.so.${old.version} -I . -o example.js
echo "Using node to execute the test"
${pkgs.nodejs}/bin/node ./example.js
set +x
if [ $? -ne 0 ]; then
echo "test failed for some reason"
exit 1;
else
echo "it seems to work! very good."
fi
echo "================= /testing zlib using node ================="
'';
postPatch = pkgs.stdenv.lib.optionalString pkgs.stdenv.isDarwin ''
substituteInPlace configure \
--replace '/usr/bin/libtool' 'ar' \
--replace 'AR="libtool"' 'AR="ar"' \