emscripten/embuilder.py at incoming · JavaScriptIOT/emscripten · GitHub

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#!/usr/bin/env python2

'''

Tool to manage building of various useful things, such as libc, libc++, native optimizer, as well as fetch and build ports like zlib and sdl2

'''

from __future__ import print_function

import os, sys

import tools.shared as shared

if len(sys.argv) < 2 or sys.argv[1] in ['-v', '-help', '--help', '-?', '?']:

print('''

Emscripten System Builder Tool

==============================

You can use this tool to manually build parts of the emscripten system

environment. In general emcc will build them automatically on demand, so

you do not strictly need to use this tool, but it gives you more control

over the process (in particular, if emcc does this automatically, and you

are running multiple build commands in parallel, confusion can occur).

Usage:

embuilder.py OPERATION TASK1 [TASK2..]

Available operations and tasks:

build libc

libc-mt

dlmalloc

dlmalloc_threadsafe

pthreads

libcxx

libcxx_noexcept

libcxxabi

native_optimizer

binaryen

bullet

freetype

libpng

ogg

sdl2

sdl2-image

sdl2-ttf

sdl2-net

vorbis

zlib

cocos2d

wasm-libc

wasm_compiler_rt

Issuing 'embuilder.py build ALL' causes each task to be built.

It is also possible to build native_optimizer manually by using CMake. To

do that, run

1. cd $EMSCRIPTEN/tools/optimizer

2. cmake . -DCMAKE_BUILD_TYPE=Release

3. make (or mingw32-make/vcbuild/msbuild on Windows)

and set up the location to the native optimizer in ~/.emscripten

''')

sys.exit(0)

C_BARE = '''

int main() {}

'''

C_WITH_STDLIB = '''

#include <string.h>

int main() {

return int(strchr("str", 'c'));

}

'''

C_WITH_MALLOC = '''

#include <string.h>

#include <stdlib.h>

int main() {

return int(malloc(10)) + int(strchr("str", 'c'));

}

'''

CXX_WITH_STDLIB = '''

#include <iostream>

int main() {

std::cout << "hello";

return 0;

}

'''

SYSTEM_TASKS = ['compiler-rt', 'libc', 'libc-mt', 'dlmalloc', 'dlmalloc_threadsafe', 'pthreads', 'dlmalloc_debug', 'dlmalloc_threadsafe_debug', 'libcxx', 'libcxx_noexcept', 'libcxxabi', 'html5']

USER_TASKS = ['al', 'gl', 'binaryen', 'bullet', 'freetype', 'libpng', 'ogg', 'sdl2', 'sdl2-image', 'sdl2-ttf', 'sdl2-net', 'vorbis', 'zlib']

temp_files = shared.configuration.get_temp_files()

def build(src, result_libs, args=[]):

# if a library is a .a, also build the .bc, as we need it when forcing a

# a system library - in that case, we always want all the code linked in

if result_libs:

need_forced = []

with_forced = []

for result_lib in result_libs:

if result_lib.endswith('.a'):

short = result_lib[:-2]

if short in SYSTEM_TASKS:

need_forced.append(short.replace('_noexcept', ''))

with_forced.append(short + '.bc')

continue

with_forced.append(result_lib)

if need_forced:

print(str(need_forced))

if os.environ.get('EMCC_FORCE_STDLIBS'):

print('skipping forced (.bc) versions of .a libraries, since EMCC_FORCE_STDLIBS already set')

else:

os.environ['EMCC_FORCE_STDLIBS'] = ','.join(need_forced)

try:

build(src, with_forced, args)

finally:

del os.environ['EMCC_FORCE_STDLIBS']

# build in order to generate the libraries

with temp_files.get_file('.cpp') as temp:

open(temp, 'w').write(src)

temp_js = temp_files.get('.js').name

shared.Building.emcc(temp, args, output_filename=temp_js)

# verify

assert os.path.exists(temp_js), 'failed to build file'

if result_libs:

for lib in result_libs:

assert os.path.exists(shared.Cache.get_path(lib)), 'not seeing that requested library %s has been built because file %s does not exist' % (lib, shared.Cache.get_path(lib))

def build_port(port_name, lib_name, params):

build(C_BARE, [os.path.join('ports-builds', port_name, lib_name)] if lib_name else None, params)

operation = sys.argv[1]

if operation == 'build':

auto_tasks = False

tasks = sys.argv[2:]

if 'SYSTEM' in tasks:

tasks = SYSTEM_TASKS

auto_tasks = True

if 'ALL' in tasks:

tasks = SYSTEM_TASKS + USER_TASKS

auto_tasks = True

if auto_tasks:

if shared.Settings.WASM_BACKEND:

skip_tasks = {'libc-mt', 'dlmalloc_threadsafe', 'dlmalloc_threadsafe_debug', 'pthreads'}

print('Skipping building of %s, because WebAssembly does not support pthreads.' % ', '.join(skip_tasks))

tasks = [x for x in tasks if x not in skip_tasks]

else:

if os.environ.get('EMSCRIPTEN_NATIVE_OPTIMIZER'):

print('Skipping building of native-optimizer since environment variable EMSCRIPTEN_NATIVE_OPTIMIZER is present and set to point to a prebuilt native optimizer path.')

elif hasattr(shared, 'EMSCRIPTEN_NATIVE_OPTIMIZER'):

print('Skipping building of native-optimizer since .emscripten config file has set EMSCRIPTEN_NATIVE_OPTIMIZER to point to a prebuilt native optimizer path.')

else:

tasks += ['native_optimizer']

print('Building targets: %s' % ' '.join(tasks))

for what in tasks:

shared.logging.info('building and verifying ' + what)

if what == 'compiler-rt':

build('''

int main() {

double _Complex a, b, c;

c = a / b;

return 0;

}

''', ['compiler-rt.a'])

elif what in ('libc', 'dlmalloc'):

build(C_WITH_MALLOC, ['libc.bc', 'dlmalloc.bc'])

elif what == 'wasm-libc':

build(C_WITH_STDLIB, ['wasm-libc.bc'], ['-s', 'WASM=1'])

elif what in ('libc-mt', 'pthreads', 'dlmalloc_threadsafe'):

build(C_WITH_MALLOC, ['libc-mt.bc', 'dlmalloc_threadsafe.bc', 'pthreads.bc'], ['-s', 'USE_PTHREADS=1'])

elif what == 'dlmalloc_debug':

build(C_WITH_MALLOC, ['dlmalloc_debug.bc'], ['-g'])

elif what == 'dlmalloc_threadsafe_debug':

build(C_WITH_MALLOC, ['dlmalloc_threadsafe_debug.bc'], ['-g', '-s', 'USE_PTHREADS=1'])

elif what == 'libcxx':

build(CXX_WITH_STDLIB, ['libcxx.a'])

elif what == 'libcxx_noexcept':

build(CXX_WITH_STDLIB, ['libcxx_noexcept.a'], ['-s', 'DISABLE_EXCEPTION_CATCHING=1'])

elif what == 'libcxxabi':

build('''

struct X { int x; virtual void a() {} };

struct Y : X { int y; virtual void a() { y = 10; }};

int main(int argc, char **argv) {

Y* y = dynamic_cast<Y*>((X*)argv[1]);

y->a();

return y->y;

}

''', ['libcxxabi.bc'])

elif what == 'gl':

build('''

extern "C" { extern void* emscripten_GetProcAddress(const char *x); }

int main() {

return int(emscripten_GetProcAddress("waka waka"));

}

''', ['gl.bc'])

elif what == 'native_optimizer':

build(C_BARE, ['optimizer.2.exe'], ['-O2'])

elif what == 'wasm_compiler_rt':

if shared.Settings.WASM_BACKEND:

build(C_BARE, ['wasm_compiler_rt.a'], ['-s', 'WASM=1'])

else:

shared.logging.warning('wasm_compiler_rt not built when using JSBackend')

elif what == 'html5':

build('''

#include <stdlib.h>

#include "emscripten/key_codes.h"

int main() {

return emscripten_compute_dom_pk_code(NULL);

}

''', ['html5.bc'])

elif what == 'al':

build('''

#include "AL/al.h"

int main() {

alGetProcAddress(0);

return 0;

}

''', ['al.bc'])

elif what == 'zlib':

build_port('zlib', 'libz.a', ['-s', 'USE_ZLIB=1'])

elif what == 'bullet':

build_port('bullet', 'libbullet.bc', ['-s', 'USE_BULLET=1'])

elif what == 'vorbis':

build_port('vorbis', 'libvorbis.bc', ['-s', 'USE_VORBIS=1'])

elif what == 'ogg':

build_port('ogg', 'libogg.bc', ['-s', 'USE_OGG=1'])

elif what == 'libpng':

build_port('libpng', 'libpng.bc', ['-s', 'USE_ZLIB=1', '-s', 'USE_LIBPNG=1'])

elif what == 'sdl2':

build_port('sdl2', 'libsdl2.bc', ['-s', 'USE_SDL=2'])

elif what == 'sdl2-image':

build_port('sdl2-image', 'libsdl2_image.bc', ['-s', 'USE_SDL=2', '-s', 'USE_SDL_IMAGE=2'])

elif what == 'sdl2-net':

build_port('sdl2-net', 'libsdl2_net.bc', ['-s', 'USE_SDL=2', '-s', 'USE_SDL_NET=2'])

elif what == 'freetype':

build_port('freetype', 'libfreetype.a', ['-s', 'USE_FREETYPE=1'])

elif what == 'harfbuzz':

build_port('harfbuzz', 'libharfbuzz.a', ['-s', 'USE_HARFBUZZ=1'])

elif what == 'sdl2-ttf':

build_port('sdl2-ttf', 'libsdl2_ttf.bc', ['-s', 'USE_SDL=2', '-s', 'USE_SDL_TTF=2', '-s', 'USE_FREETYPE=1'])

elif what == 'binaryen':

build_port('binaryen', None, ['-s', 'WASM=1'])

elif what == 'cocos2d':

build_port('cocos2d', None, ['-s', 'USE_COCOS2D=3', '-s', 'USE_ZLIB=1', '-s', 'USE_LIBPNG=1'])

else:

shared.logging.error('unfamiliar build target: ' + what)

sys.exit(1)

shared.logging.info('...success')

else:

shared.logging.error('unfamiliar operation: ' + operation)

sys.exit(1)

emscripten/embuilder.py at incoming · JavaScriptIOT/emscripten · GitHub

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