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#!/usr/bin/env python3
# Copyright 2014 The Emscripten Authors. All rights reserved.
# Emscripten is available under two separate licenses, the MIT license and the
# University of Illinois/NCSA Open Source License. Both these licenses can be
# found in the LICENSE file.
"""Tool to manage building of system libraries and ports.
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).
"""
import argparse
import logging
import sys
from tools import shared
from tools import system_libs
import emscripten
SYSTEM_LIBRARIES = system_libs.Library.get_all_variations()
SYSTEM_TASKS = list(SYSTEM_LIBRARIES.keys())
# This is needed to build the generated_struct_info.json file.
# It is not a system library, but it needs to be built before running with FROZEN_CACHE.
SYSTEM_TASKS += ['struct_info']
# Minimal subset of SYSTEM_TASKS used by CI systems to build enough to useful
MINIMAL_TASKS = [
'libcompiler_rt',
'libc',
'libc++abi',
'libc++abi-except',
'libc++abi-noexcept',
'libc++',
'libc++-except',
'libc++-noexcept',
'libal',
'libdlmalloc',
'libdlmalloc-debug',
'libemmalloc',
'libemmalloc-64bit',
'libsockets',
'libc_rt_wasm',
'struct_info',
'libstandalonewasm',
'crt1',
'libunwind-except'
]
USER_TASKS = [
'boost_headers',
'bullet',
'bzip2',
'cocos2d',
'freetype',
'harfbuzz',
'icu',
'libjpeg',
'libpng',
'ogg',
'regal',
'regal-mt',
'sdl2',
'sdl2-mt',
'sdl2-gfx',
'sdl2-image',
'sdl2-image-png',
'sdl2-image-jpg',
'sdl2-mixer',
'sdl2-mixer-ogg',
'sdl2-mixer-mp3',
'sdl2-net',
'sdl2-ttf',
'vorbis',
'zlib',
]
temp_files = shared.configuration.get_temp_files()
logger = logging.getLogger('embuilder')
force = False
def get_help():
all_tasks = SYSTEM_TASKS + USER_TASKS
all_tasks.sort()
return '''
Available targets:
build %s
Issuing 'embuilder.py build ALL' causes each task to be built.
''' % '\n '.join(all_tasks)
def build_port(port_name, lib_name):
if force:
shared.Cache.erase_file(lib_name)
system_libs.build_port(port_name, shared.Settings)
def main():
global force
parser = argparse.ArgumentParser(description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter,
epilog=get_help())
parser.add_argument('--lto', action='store_true', help='build bitcode object for LTO')
parser.add_argument('--pic', action='store_true',
help='build relocatable objects for suitable for dynamic linking')
parser.add_argument('--force', action='store_true',
help='force rebuild of target (by removing it first)')
parser.add_argument('operation', help='currently only "build" is supported')
parser.add_argument('targets', nargs='+', help='see below')
args = parser.parse_args()
if args.operation != 'build':
shared.exit_with_error('unfamiliar operation: ' + args.operation)
# process flags
# Check sanity so that if settings file has changed, the cache is cleared here.
# Otherwise, the cache will clear in an emcc process, which is invoked while building
# a system library into the cache, causing trouble.
shared.check_sanity()
if args.lto:
shared.Settings.LTO = "full"
if args.pic:
shared.Settings.RELOCATABLE = 1
if args.force:
force = True
# process tasks
auto_tasks = False
tasks = args.targets
if 'SYSTEM' in tasks:
tasks = SYSTEM_TASKS
auto_tasks = True
elif 'USER' in tasks:
tasks = USER_TASKS
auto_tasks = True
elif 'MINIMAL' in tasks:
tasks = MINIMAL_TASKS
auto_tasks = True
elif 'ALL' in tasks:
tasks = SYSTEM_TASKS + USER_TASKS
auto_tasks = True
if auto_tasks:
skip_tasks = []
if shared.Settings.RELOCATABLE:
# we don't support PIC + pthreads yet
for task in SYSTEM_TASKS + USER_TASKS:
if '-mt' in task:
skip_tasks.append(task)
print('Skipping building of %s, because we don\'t support threads and PIC code.' % ', '.join(skip_tasks))
# cocos2d: must be ported, errors on
# "Cannot recognize the target platform; are you targeting an unsupported platform?"
skip_tasks += ['cocos2d']
tasks = [x for x in tasks if x not in skip_tasks]
print('Building targets: %s' % ' '.join(tasks))
for what in tasks:
logger.info('building and verifying ' + what)
if what in SYSTEM_LIBRARIES:
library = SYSTEM_LIBRARIES[what]
if force:
library.erase()
library.get_path()
elif what == 'struct_info':
if force:
shared.Cache.erase_file('generated_struct_info.json')
emscripten.generate_struct_info()
elif what == 'icu':
build_port('icu', 'libicuuc.a')
elif what == 'zlib':
shared.Settings.USE_ZLIB = 1
build_port('zlib', 'libz.a')
shared.Settings.USE_ZLIB = 0
elif what == 'bzip2':
build_port('bzip2', 'libbz2.a')
elif what == 'bullet':
build_port('bullet', 'libbullet.a')
elif what == 'vorbis':
build_port('vorbis', 'libvorbis.a')
elif what == 'ogg':
build_port('ogg', 'libogg.a')
elif what == 'libjpeg':
build_port('libjpeg', 'libjpeg.a')
elif what == 'libpng':
build_port('libpng', 'libpng.a')
elif what == 'sdl2':
build_port('sdl2', 'libSDL2.a')
elif what == 'sdl2-mt':
shared.Settings.USE_PTHREADS = 1
build_port('sdl2', 'libSDL2-mt.a')
shared.Settings.USE_PTHREADS = 0
elif what == 'sdl2-gfx':
build_port('sdl2_gfx', 'libSDL2_gfx.a')
elif what == 'sdl2-image':
build_port('sdl2_image', 'libSDL2_image.a')
elif what == 'sdl2-image-png':
shared.Settings.SDL2_IMAGE_FORMATS = ["png"]
build_port('sdl2_image', 'libSDL2_image_png.a')
shared.Settings.SDL2_IMAGE_FORMATS = []
elif what == 'sdl2-image-jpg':
shared.Settings.SDL2_IMAGE_FORMATS = ["jpg"]
build_port('sdl2_image', 'libSDL2_image_jpg.a')
shared.Settings.SDL2_IMAGE_FORMATS = []
elif what == 'sdl2-net':
build_port('sdl2_net', 'libSDL2_net.a')
elif what == 'sdl2-mixer':
old_formats = shared.Settings.SDL2_MIXER_FORMATS
shared.Settings.SDL2_MIXER_FORMATS = []
build_port('sdl2_mixer', 'libSDL2_mixer.a')
shared.Settings.SDL2_MIXER_FORMATS = old_formats
elif what == 'sdl2-mixer-ogg':
old_formats = shared.Settings.SDL2_MIXER_FORMATS
shared.Settings.SDL2_MIXER_FORMATS = ["ogg"]
build_port('sdl2_mixer', 'libSDL2_mixer_ogg.a')
shared.Settings.SDL2_MIXER_FORMATS = old_formats
elif what == 'sdl2-mixer-mp3':
old_formats = shared.Settings.SDL2_MIXER_FORMATS
shared.Settings.SDL2_MIXER_FORMATS = ["mp3"]
build_port('sdl2_mixer', 'libSDL2_mixer_mp3.a')
shared.Settings.SDL2_MIXER_FORMATS = old_formats
elif what == 'freetype':
build_port('freetype', 'libfreetype.a')
elif what == 'harfbuzz':
build_port('harfbuzz', 'libharfbuzz.a')
elif what == 'harfbuzz-mt':
shared.Settings.USE_PTHREADS = 1
build_port('harfbuzz', 'libharfbuzz-mt.a')
shared.Settings.USE_PTHREADS = 0
elif what == 'sdl2-ttf':
build_port('sdl2_ttf', 'libSDL2_ttf.a')
elif what == 'cocos2d':
build_port('cocos2d', 'libcocos2d.a')
elif what == 'regal':
build_port('regal', 'libregal.a')
elif what == 'regal-mt':
shared.Settings.USE_PTHREADS = 1
build_port('regal', 'libregal-mt.a')
shared.Settings.USE_PTHREADS = 0
elif what == 'boost_headers':
build_port('boost_headers', 'libboost_headers.a')
else:
logger.error('unfamiliar build target: ' + what)
return 1
logger.info('...success')
return 0
if __name__ == '__main__':
try:
sys.exit(main())
except KeyboardInterrupt:
logger.warning("KeyboardInterrupt")
sys.exit(1)
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