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emsdk.py
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#!/usr/bin/env python
# Copyright 2019 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.
from __future__ import print_function
import copy
from collections import OrderedDict
import errno
import json
import multiprocessing
import os
import os.path
import platform
import re
import shutil
import stat
import subprocess
import sys
import sysconfig
import zipfile
if os.name == 'nt':
try:
import winreg
except ImportError:
# old python 2 name
import _winreg as winreg
import ctypes.wintypes
if sys.version_info >= (3,):
from urllib.parse import urljoin
from urllib.request import urlopen
import functools
else:
from urlparse import urljoin
from urllib2 import urlopen
emsdk_packages_url = 'https://storage.googleapis.com/webassembly/emscripten-releases-builds/deps/'
emscripten_releases_repo = 'https://chromium.googlesource.com/emscripten-releases'
emscripten_releases_download_url_template = "https://storage.googleapis.com/webassembly/emscripten-releases-builds/%s/%s/wasm-binaries.%s"
# This was previously `master.zip` but we are transitioning to `main` and
# `HEAD.zip` works for both cases. In future we could switch this to
# `main.zip` perhaps.
emsdk_zip_download_url = 'https://github.com/emscripten-core/emsdk/archive/HEAD.zip'
zips_subdir = 'zips/'
extra_release_tag = None
# Enable this to do very verbose printing about the different steps that are
# being run. Useful for debugging.
VERBOSE = int(os.getenv('EMSDK_VERBOSE', '0'))
TTY_OUTPUT = not os.getenv('EMSDK_NOTTY', not sys.stdout.isatty())
def errlog(msg):
print(msg, file=sys.stderr)
def exit_with_error(msg):
errlog('error: %s' % msg)
sys.exit(1)
WINDOWS = False
MINGW = False
MSYS = False
MACOS = False
LINUX = False
if 'EMSDK_OS' in os.environ:
EMSDK_OS = os.environ['EMSDK_OS']
if EMSDK_OS == 'windows':
WINDOWS = True
elif EMSDK_OS == 'linux':
LINUX = True
elif EMSDK_OS == 'macos':
MACOS = True
else:
assert False
else:
if os.name == 'nt' or (os.getenv('SYSTEMROOT') is not None and 'windows' in os.getenv('SYSTEMROOT').lower()) or (os.getenv('COMSPEC') is not None and 'windows' in os.getenv('COMSPEC').lower()):
WINDOWS = True
if os.getenv('MSYSTEM'):
MSYS = True
# Some functions like os.path.normpath() exhibit different behavior between
# different versions of Python, so we need to distinguish between the MinGW
# and MSYS versions of Python
if sysconfig.get_platform() == 'mingw':
MINGW = True
if os.getenv('MSYSTEM') != 'MSYS' and os.getenv('MSYSTEM') != 'MINGW64':
# https://stackoverflow.com/questions/37460073/msys-vs-mingw-internal-environment-variables
errlog('Warning: MSYSTEM environment variable is present, and is set to "' + os.getenv('MSYSTEM') + '". This shell has not been tested with emsdk and may not work.')
if platform.mac_ver()[0] != '':
MACOS = True
if not MACOS and (platform.system() == 'Linux'):
LINUX = True
UNIX = (MACOS or LINUX)
# Pick which shell of 4 shells to use
POWERSHELL = bool(os.getenv('EMSDK_POWERSHELL'))
CSH = bool(os.getenv('EMSDK_CSH'))
CMD = bool(os.getenv('EMSDK_CMD'))
BASH = bool(os.getenv('EMSDK_BASH'))
if WINDOWS and BASH:
MSYS = True
if not CSH and not POWERSHELL and not BASH and not CMD:
# Fall back to default of `cmd` on windows and `bash` otherwise
if WINDOWS and not MSYS:
CMD = True
else:
BASH = True
if WINDOWS:
ENVPATH_SEPARATOR = ';'
else:
ENVPATH_SEPARATOR = ':'
# platform.machine() may return AMD64 on windows, so standardize the case.
machine = os.getenv('EMSDK_ARCH', platform.machine().lower())
if machine.startswith('x64') or machine.startswith('amd64') or machine.startswith('x86_64'):
ARCH = 'x86_64'
elif machine.endswith('86'):
ARCH = 'x86'
elif machine.startswith('aarch64') or machine.lower().startswith('arm64'):
ARCH = 'aarch64'
elif machine.startswith('arm'):
ARCH = 'arm'
else:
exit_with_error('unknown machine architecture: ' + machine)
# Don't saturate all cores to not steal the whole system, but be aggressive.
CPU_CORES = int(os.environ.get('EMSDK_NUM_CORES', max(multiprocessing.cpu_count() - 1, 1)))
CMAKE_BUILD_TYPE_OVERRIDE = None
# If true, perform a --shallow clone of git.
GIT_CLONE_SHALLOW = False
# If true, LLVM backend is built with tests enabled, and Binaryen is built with
# Visual Studio static analyzer enabled.
BUILD_FOR_TESTING = False
# If 'auto', assertions are decided by the build type
# (Release&MinSizeRel=disabled, Debug&RelWithDebInfo=enabled)
# Other valid values are 'ON' and 'OFF'
ENABLE_LLVM_ASSERTIONS = 'auto'
# If true, keeps the downloaded archive files.
KEEP_DOWNLOADS = bool(os.getenv('EMSDK_KEEP_DOWNLOADS'))
def os_name():
if WINDOWS:
return 'win'
elif LINUX:
return 'linux'
elif MACOS:
return 'macos'
else:
raise Exception('unknown OS')
def os_name_for_emscripten_releases():
if WINDOWS:
return 'win'
elif LINUX:
return 'linux'
elif MACOS:
return 'mac'
else:
raise Exception('unknown OS')
def debug_print(msg):
if VERBOSE:
errlog(msg)
def to_unix_path(p):
return p.replace('\\', '/')
def emsdk_path():
return to_unix_path(os.path.dirname(os.path.realpath(__file__)))
EMSDK_SET_ENV = ""
if POWERSHELL:
EMSDK_SET_ENV = os.path.join(emsdk_path(), 'emsdk_set_env.ps1')
else:
EMSDK_SET_ENV = os.path.join(emsdk_path(), 'emsdk_set_env.bat')
# Parses https://github.com/emscripten-core/emscripten/tree/d6aced8 to a pair (https://github.com/emscripten-core/emscripten, d6aced8)
def parse_github_url_and_refspec(url):
if not url:
return ('', '')
if url.endswith(('/tree/', '/tree', '/commit/', '/commit')):
raise Exception('Malformed git URL and refspec ' + url + '!')
if '/tree/' in url:
if url.endswith('/'):
raise Exception('Malformed git URL and refspec ' + url + '!')
return url.split('/tree/')
elif '/commit/' in url:
if url.endswith('/'):
raise Exception('Malformed git URL and refspec ' + url + '!')
return url.split('/commit/')
else:
return (url, 'main') # Assume the default branch is main in the absence of a refspec
ARCHIVE_SUFFIXES = ('zip', '.tar', '.gz', '.xz', '.tbz2', '.bz2')
# Finds the given executable 'program' in PATH. Operates like the Unix tool 'which'.
def which(program):
def is_exe(fpath):
return os.path.isfile(fpath) and (WINDOWS or os.access(fpath, os.X_OK))
fpath, fname = os.path.split(program)
if fpath:
if is_exe(program):
return program
else:
for path in os.environ["PATH"].split(os.pathsep):
path = path.strip('"')
exe_file = os.path.join(path, program)
if is_exe(exe_file):
return exe_file
if WINDOWS and '.' not in fname:
if is_exe(exe_file + '.exe'):
return exe_file + '.exe'
if is_exe(exe_file + '.cmd'):
return exe_file + '.cmd'
if is_exe(exe_file + '.bat'):
return exe_file + '.bat'
return None
def vswhere(version):
try:
program_files = os.environ['ProgramFiles(x86)'] if 'ProgramFiles(x86)' in os.environ else os.environ['ProgramFiles']
vswhere_path = os.path.join(program_files, 'Microsoft Visual Studio', 'Installer', 'vswhere.exe')
output = json.loads(subprocess.check_output([vswhere_path, '-latest', '-version', '[%s.0,%s.0)' % (version, version + 1), '-requires', 'Microsoft.VisualStudio.Component.VC.Tools.x86.x64', '-property', 'installationPath', '-format', 'json']))
# Visual Studio 2017 Express is not included in the above search, and it
# does not have the VC.Tools.x86.x64 tool, so do a catch-all attempt as a
# fallback, to detect Express version.
if not output:
output = json.loads(subprocess.check_output([vswhere_path, '-latest', '-version', '[%s.0,%s.0)' % (version, version + 1), '-products', '*', '-property', 'installationPath', '-format', 'json']))
if not output:
return ''
return str(output[0]['installationPath'])
except Exception:
return ''
def vs_filewhere(installation_path, platform, file):
try:
vcvarsall = os.path.join(installation_path, 'VC\\Auxiliary\\Build\\vcvarsall.bat')
env = subprocess.check_output('cmd /c "%s" %s & where %s' % (vcvarsall, platform, file))
paths = [path[:-len(file)] for path in env.split('\r\n') if path.endswith(file)]
return paths[0]
except Exception:
return ''
CMAKE_GENERATOR = 'Unix Makefiles'
if WINDOWS:
# Detect which CMake generator to use when building on Windows
if '--mingw' in sys.argv:
CMAKE_GENERATOR = 'MinGW Makefiles'
elif '--vs2017' in sys.argv:
CMAKE_GENERATOR = 'Visual Studio 15'
elif '--vs2019' in sys.argv:
CMAKE_GENERATOR = 'Visual Studio 16'
else:
program_files = os.environ['ProgramFiles(x86)'] if 'ProgramFiles(x86)' in os.environ else os.environ['ProgramFiles']
vs2019_exists = len(vswhere(16)) > 0
vs2017_exists = len(vswhere(15)) > 0
mingw_exists = which('mingw32-make') is not None and which('g++') is not None
if vs2019_exists:
CMAKE_GENERATOR = 'Visual Studio 16'
elif vs2017_exists:
# VS2017 has an LLVM build issue, see
# https://github.com/kripken/emscripten-fastcomp/issues/185
CMAKE_GENERATOR = 'Visual Studio 15'
elif mingw_exists:
CMAKE_GENERATOR = 'MinGW Makefiles'
else:
# No detected generator
CMAKE_GENERATOR = ''
sys.argv = [a for a in sys.argv if a not in ('--mingw', '--vs2017', '--vs2019')]
# Computes a suitable path prefix to use when building with a given generator.
def cmake_generator_prefix():
if CMAKE_GENERATOR == 'Visual Studio 16':
return '_vs2019'
if CMAKE_GENERATOR == 'Visual Studio 15':
return '_vs2017'
elif CMAKE_GENERATOR == 'MinGW Makefiles':
return '_mingw'
# Unix Makefiles do not specify a path prefix for backwards path compatibility
return ''
# Removes a directory tree even if it was readonly, and doesn't throw exception
# on failure.
def remove_tree(d):
debug_print('remove_tree(' + str(d) + ')')
if not os.path.exists(d):
return
try:
def remove_readonly_and_try_again(func, path, exc_info):
if not (os.stat(path).st_mode & stat.S_IWRITE):
os.chmod(path, stat.S_IWRITE)
func(path)
else:
raise
shutil.rmtree(d, onerror=remove_readonly_and_try_again)
except Exception as e:
debug_print('remove_tree threw an exception, ignoring: ' + str(e))
def win_set_environment_variable_direct(key, value, system=True):
folder = None
try:
if system:
# Read globally from ALL USERS section.
folder = winreg.OpenKeyEx(winreg.HKEY_LOCAL_MACHINE, 'SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment', 0, winreg.KEY_ALL_ACCESS)
else:
# Register locally from CURRENT USER section.
folder = winreg.OpenKeyEx(winreg.HKEY_CURRENT_USER, 'Environment', 0, winreg.KEY_ALL_ACCESS)
winreg.SetValueEx(folder, key, 0, winreg.REG_EXPAND_SZ, value)
debug_print('Set key=' + key + ' with value ' + value + ' in registry.')
return True
except Exception as e:
# 'Access is denied.'
if e.args[3] == 5:
exit_with_error('failed to set the environment variable \'' + key + '\'! Setting environment variables permanently requires administrator access. Please rerun this command with administrative privileges. This can be done for example by holding down the Ctrl and Shift keys while opening a command prompt in start menu.')
errlog('Failed to write environment variable ' + key + ':')
errlog(str(e))
return False
finally:
if folder is not None:
folder.Close()
def win_get_environment_variable(key, system=True, user=True, fallback=True):
if (not system and not user and fallback):
# if no --system or --permanent flag is provided use shell's value
return os.environ[key]
try:
folder = None
try:
if system:
# Read globally from ALL USERS section.
folder = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, 'SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment')
else:
# Register locally from CURRENT USER section.
folder = winreg.OpenKey(winreg.HKEY_CURRENT_USER, 'Environment')
value = str(winreg.QueryValueEx(folder, key)[0])
except Exception:
# If reading registry fails for some reason - read via os.environ. This has the drawback
# that expansion items such as %PROGRAMFILES% will have been expanded, so
# need to be precise not to set these back to system registry, or
# expansion items would be lost.
if fallback:
return os.environ[key]
return None
finally:
if folder is not None:
folder.Close()
except Exception as e:
# this catch is if both the registry key threw an exception and the key is not in os.environ
if e.args[0] != 2:
# 'The system cannot find the file specified.'
errlog('Failed to read environment variable ' + key + ':')
errlog(str(e))
return None
return value
def win_set_environment_variable(key, value, system, user):
debug_print('set ' + str(key) + '=' + str(value) + ', in system=' + str(system))
previous_value = win_get_environment_variable(key, system=system, user=user)
if previous_value == value:
debug_print(' no need to set, since same value already exists.')
# No need to elevate UAC for nothing to set the same value, skip.
return False
if not value:
try:
if system:
cmd = ['REG', 'DELETE', 'SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment', '/V', key, '/f']
else:
cmd = ['REG', 'DELETE', 'HKCU\\Environment', '/V', key, '/f']
debug_print(str(cmd))
value = subprocess.call(cmd, stdout=subprocess.PIPE)
except Exception:
return False
return True
try:
if win_set_environment_variable_direct(key, value, system):
return True
# Escape % signs so that we don't expand references to environment variables.
value = value.replace('%', '^%')
if len(value) >= 1024:
exit_with_error('the new environment variable ' + key + ' is more than 1024 characters long! A value this long cannot be set via command line: please add the environment variable specified above to system environment manually via Control Panel.')
cmd = ['SETX', key, value]
debug_print(str(cmd))
retcode = subprocess.call(cmd, stdout=subprocess.PIPE)
if retcode != 0:
errlog('ERROR! Failed to set environment variable ' + key + '=' + value + '. You may need to set it manually.')
else:
return True
except Exception as e:
errlog('ERROR! Failed to set environment variable ' + key + '=' + value + ':')
errlog(str(e))
errlog('You may need to set it manually.')
return False
def win_set_environment_variables(env_vars_to_add, system, user):
if not env_vars_to_add:
return
changed = False
for key, value in env_vars_to_add:
if win_set_environment_variable(key, value, system, user):
if not changed:
changed = True
print('Setting global environment variables:')
print(key + ' = ' + value)
if not changed:
print('Global environment variables up to date')
return
# if changes were made then we need to notify other processes
try:
HWND_BROADCAST = ctypes.wintypes.HWND(0xFFFF) # win32con.HWND_BROADCAST == 65535
WM_SETTINGCHANGE = 0x001A # win32con.WM_SETTINGCHANGE == 26
SMTO_BLOCK = 0x0001 # win32con.SMTO_BLOCK == 1
ctypes.windll.user32.SendMessageTimeoutA(
HWND_BROADCAST, # hWnd: notify everyone
WM_SETTINGCHANGE, # Msg: registry changed
0, # wParam: Must be 0 when setting changed is sent by users
'Environment', # lParam: Specifically environment variables changed
SMTO_BLOCK, # fuFlags: Wait for message to be sent or timeout
100) # uTimeout: 100ms
except Exception as e:
errlog('SendMessageTimeout failed with error: ' + str(e))
def win_delete_environment_variable(key, system=True, user=True):
debug_print('win_delete_environment_variable(key=' + key + ', system=' + str(system) + ')')
return win_set_environment_variable(key, None, system, user)
# Returns the absolute pathname to the given path inside the Emscripten SDK.
def sdk_path(path):
if os.path.isabs(path):
return path
return to_unix_path(os.path.join(emsdk_path(), path))
# Modifies the given file in-place to contain '\r\n' line endings.
def file_to_crlf(filename):
text = open(filename, 'r').read()
text = text.replace('\r\n', '\n').replace('\n', '\r\n')
open(filename, 'wb').write(text)
# Modifies the given file in-place to contain '\n' line endings.
def file_to_lf(filename):
text = open(filename, 'r').read()
text = text.replace('\r\n', '\n')
open(filename, 'wb').write(text)
# Removes a single file, suppressing exceptions on failure.
def rmfile(filename):
debug_print('rmfile(' + filename + ')')
try:
os.remove(filename)
except:
pass
def fix_lineendings(filename):
if WINDOWS:
file_to_crlf(filename)
else:
file_to_lf(filename)
# http://stackoverflow.com/questions/600268/mkdir-p-functionality-in-python
def mkdir_p(path):
debug_print('mkdir_p(' + path + ')')
if os.path.exists(path):
return
try:
os.makedirs(path)
except OSError as exc: # Python >2.5
if exc.errno == errno.EEXIST and os.path.isdir(path):
pass
else:
raise
def num_files_in_directory(path):
if not os.path.isdir(path):
return 0
return len([name for name in os.listdir(path) if os.path.exists(os.path.join(path, name))])
def run(cmd, cwd=None, quiet=False):
debug_print('run(cmd=' + str(cmd) + ', cwd=' + str(cwd) + ')')
process = subprocess.Popen(cmd, cwd=cwd, env=os.environ.copy())
process.communicate()
if process.returncode != 0 and not quiet:
errlog(str(cmd) + ' failed with error code ' + str(process.returncode) + '!')
return process.returncode
# http://pythonicprose.blogspot.fi/2009/10/python-extract-targz-archive.html
def untargz(source_filename, dest_dir):
print("Unpacking '" + source_filename + "' to '" + dest_dir + "'")
mkdir_p(dest_dir)
returncode = run(['tar', '-xvf' if VERBOSE else '-xf', sdk_path(source_filename), '--strip', '1'], cwd=dest_dir)
# tfile = tarfile.open(source_filename, 'r:gz')
# tfile.extractall(dest_dir)
return returncode == 0
# On Windows, it is not possible to reference path names that are longer than
# ~260 characters, unless the path is referenced via a "\\?\" prefix.
# See https://msdn.microsoft.com/en-us/library/aa365247.aspx#maxpath and http://stackoverflow.com/questions/3555527/python-win32-filename-length-workaround
# In that mode, forward slashes cannot be used as delimiters.
def fix_potentially_long_windows_pathname(pathname):
if not WINDOWS:
return pathname
# Test if emsdk calls fix_potentially_long_windows_pathname() with long relative paths (which is problematic)
if not os.path.isabs(pathname) and len(pathname) > 200:
errlog('Warning: Seeing a relative path "' + pathname + '" which is dangerously long for being referenced as a short Windows path name. Refactor emsdk to be able to handle this!')
if pathname.startswith('\\\\?\\'):
return pathname
pathname = os.path.normpath(pathname.replace('/', '\\'))
if MINGW:
# MinGW versions of Python return normalized paths with backslashes
# converted to forward slashes, so we must use forward slashes in our
# prefix
return '//?/' + pathname
return '\\\\?\\' + pathname
# On windows, rename/move will fail if the destination exists, and there is no
# race-free way to do it. This method removes the destination if it exists, so
# the move always works
def move_with_overwrite(src, dest):
if os.path.exists(dest):
os.remove(dest)
os.rename(src, dest)
# http://stackoverflow.com/questions/12886768/simple-way-to-unzip-file-in-python-on-all-oses
def unzip(source_filename, dest_dir):
print("Unpacking '" + source_filename + "' to '" + dest_dir + "'")
mkdir_p(dest_dir)
common_subdir = None
try:
with zipfile.ZipFile(source_filename) as zf:
# Implement '--strip 1' behavior to unzipping by testing if all the files
# in the zip reside in a common subdirectory, and if so, we move the
# output tree at the end of uncompression step.
for member in zf.infolist():
words = member.filename.split('/')
if len(words) > 1: # If there is a directory component?
if common_subdir is None:
common_subdir = words[0]
elif common_subdir != words[0]:
common_subdir = None
break
else:
common_subdir = None
break
unzip_to_dir = dest_dir
if common_subdir:
unzip_to_dir = os.path.join(os.path.dirname(dest_dir), 'unzip_temp')
# Now do the actual decompress.
for member in zf.infolist():
zf.extract(member, fix_potentially_long_windows_pathname(unzip_to_dir))
dst_filename = os.path.join(unzip_to_dir, member.filename)
# See: https://stackoverflow.com/questions/42326428/zipfile-in-python-file-permission
unix_attributes = member.external_attr >> 16
if unix_attributes:
os.chmod(dst_filename, unix_attributes)
# Move the extracted file to its final location without the base
# directory name, if we are stripping that away.
if common_subdir:
if not member.filename.startswith(common_subdir):
raise Exception('Unexpected filename "' + member.filename + '"!')
stripped_filename = '.' + member.filename[len(common_subdir):]
final_dst_filename = os.path.join(dest_dir, stripped_filename)
# Check if a directory
if stripped_filename.endswith('/'):
d = fix_potentially_long_windows_pathname(final_dst_filename)
if not os.path.isdir(d):
os.mkdir(d)
else:
parent_dir = os.path.dirname(fix_potentially_long_windows_pathname(final_dst_filename))
if parent_dir and not os.path.exists(parent_dir):
os.makedirs(parent_dir)
move_with_overwrite(fix_potentially_long_windows_pathname(dst_filename), fix_potentially_long_windows_pathname(final_dst_filename))
if common_subdir:
remove_tree(unzip_to_dir)
except zipfile.BadZipfile as e:
errlog("Unzipping file '" + source_filename + "' failed due to reason: " + str(e) + "! Removing the corrupted zip file.")
rmfile(source_filename)
return False
except Exception as e:
errlog("Unzipping file '" + source_filename + "' failed due to reason: " + str(e))
return False
return True
# This function interprets whether the given string looks like a path to a
# directory instead of a file, without looking at the actual filesystem.
# 'a/b/c' points to directory, so does 'a/b/c/', but 'a/b/c.x' is parsed as a
# filename
def path_points_to_directory(path):
if path == '.':
return True
last_slash = max(path.rfind('/'), path.rfind('\\'))
last_dot = path.rfind('.')
no_suffix = last_dot < last_slash or last_dot == -1
if no_suffix:
return True
suffix = path[last_dot:]
# Very simple logic for the only file suffixes used by emsdk downloader. Other
# suffixes, like 'clang-3.2' are treated as dirs.
if suffix in ('.exe', '.zip', '.txt'):
return False
else:
return True
def get_content_length(download):
try:
meta = download.info()
if hasattr(meta, "getheaders") and hasattr(meta.getheaders, "Content-Length"):
return int(meta.getheaders("Content-Length")[0])
elif hasattr(download, "getheader") and download.getheader('Content-Length'):
return int(download.getheader('Content-Length'))
elif hasattr(meta, "getheader") and meta.getheader('Content-Length'):
return int(meta.getheader('Content-Length'))
except Exception:
pass
return 0
def get_download_target(url, dstpath, filename_prefix=''):
file_name = filename_prefix + url.split('/')[-1]
if path_points_to_directory(dstpath):
file_name = os.path.join(dstpath, file_name)
else:
file_name = dstpath
# Treat all relative destination paths as relative to the SDK root directory,
# not the current working directory.
file_name = sdk_path(file_name)
return file_name
# On success, returns the filename on the disk pointing to the destination file that was produced
# On failure, returns None.
def download_file(url, dstpath, download_even_if_exists=False, filename_prefix=''):
debug_print('download_file(url=' + url + ', dstpath=' + dstpath + ')')
file_name = get_download_target(url, dstpath, filename_prefix)
if os.path.exists(file_name) and not download_even_if_exists:
print("File '" + file_name + "' already downloaded, skipping.")
return file_name
try:
u = urlopen(url)
mkdir_p(os.path.dirname(file_name))
with open(file_name, 'wb') as f:
file_size = get_content_length(u)
if file_size > 0:
print("Downloading: %s from %s, %s Bytes" % (file_name, url, file_size))
else:
print("Downloading: %s from %s" % (file_name, url))
file_size_dl = 0
# Draw a progress bar 80 chars wide (in non-TTY mode)
progress_max = 80 - 4
progress_shown = 0
block_sz = 256 * 1024
if not TTY_OUTPUT:
print(' [', end='')
while True:
buffer = u.read(block_sz)
if not buffer:
break
file_size_dl += len(buffer)
f.write(buffer)
if file_size:
percent = file_size_dl * 100.0 / file_size
if TTY_OUTPUT:
status = r" %10d [%3.02f%%]" % (file_size_dl, percent)
print(status, end='\r')
else:
while progress_shown < progress_max * percent / 100:
print('-', end='')
sys.stdout.flush()
progress_shown += 1
if not TTY_OUTPUT:
print(']')
sys.stdout.flush()
except Exception as e:
errlog("Error: Downloading URL '" + url + "': " + str(e))
if "SSL: CERTIFICATE_VERIFY_FAILED" in str(e) or "urlopen error unknown url type: https" in str(e):
errlog("Warning: Possibly SSL/TLS issue. Update or install Python SSL root certificates (2048-bit or greater) supplied in Python folder or https://pypi.org/project/certifi/ and try again.")
rmfile(file_name)
return None
except KeyboardInterrupt:
rmfile(file_name)
exit_with_error("aborted by user, exiting")
return file_name
def run_get_output(cmd, cwd=None):
debug_print('run_get_output(cmd=' + str(cmd) + ', cwd=' + str(cwd) + ')')
process = subprocess.Popen(cmd, cwd=cwd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE, env=os.environ.copy(), universal_newlines=True)
stdout, stderr = process.communicate()
return (process.returncode, stdout, stderr)
# must_succeed: If false, the search is performed silently without printing out
# errors if not found. Empty string is returned if git is not found.
# If true, the search is required to succeed, and the execution
# will terminate with sys.exit(1) if not found.
def GIT(must_succeed=True):
# The order in the following is important, and specifies the preferred order
# of using the git tools. Primarily use git from emsdk if installed. If not,
# use system git.
gits = ['git/1.9.4/bin/git.exe', which('git')]
for git in gits:
try:
ret, stdout, stderr = run_get_output([git, '--version'])
if ret == 0:
return git
except:
pass
if must_succeed:
if WINDOWS:
msg = "git executable was not found. Please install it by typing 'emsdk install git-1.9.4', or alternatively by installing it manually from http://git-scm.com/downloads . If you install git manually, remember to add it to PATH"
elif MACOS:
msg = "git executable was not found. Please install git for this operation! This can be done from http://git-scm.com/ , or by installing XCode and then the XCode Command Line Tools (see http://stackoverflow.com/questions/9329243/xcode-4-4-command-line-tools )"
elif LINUX:
msg = "git executable was not found. Please install git for this operation! This can be probably be done using your package manager, see http://git-scm.com/book/en/Getting-Started-Installing-Git"
else:
msg = "git executable was not found. Please install git for this operation!"
exit_with_error(msg)
# Not found
return ''
def git_repo_version(repo_path):
returncode, stdout, stderr = run_get_output([GIT(), 'log', '-n', '1', '--pretty="%aD %H"'], cwd=repo_path)
if returncode == 0:
return stdout.strip()
else:
return ""
def git_recent_commits(repo_path, n=20):
returncode, stdout, stderr = run_get_output([GIT(), 'log', '-n', str(n), '--pretty="%H"'], cwd=repo_path)
if returncode == 0:
return stdout.strip().replace('\r', '').replace('"', '').split('\n')
else:
return []
def git_clone(url, dstpath):
debug_print('git_clone(url=' + url + ', dstpath=' + dstpath + ')')
if os.path.isdir(os.path.join(dstpath, '.git')):
debug_print("Repository '" + url + "' already cloned to directory '" + dstpath + "', skipping.")
return True
mkdir_p(dstpath)
git_clone_args = []
if GIT_CLONE_SHALLOW:
git_clone_args += ['--depth', '1']
print('Cloning from ' + url + '...')
return run([GIT(), 'clone', '--recurse-submodules'] + git_clone_args + [url, dstpath]) == 0
def git_checkout_and_pull(repo_path, branch_or_tag):
debug_print('git_checkout_and_pull(repo_path=' + repo_path + ', branch/tag=' + branch_or_tag + ')')
ret = run([GIT(), 'fetch', '--quiet', 'origin'], repo_path)
if ret != 0:
return False
try:
print("Fetching latest changes to the branch/tag '" + branch_or_tag + "' for '" + repo_path + "'...")
ret = run([GIT(), 'fetch', '--quiet', 'origin'], repo_path)
if ret != 0:
return False
# this line assumes that the user has not gone and manually messed with the
# repo and added new remotes to ambiguate the checkout.
ret = run([GIT(), 'checkout', '--recurse-submodules', '--quiet', branch_or_tag], repo_path)
if ret != 0:
return False
# Test if branch_or_tag is a branch, or if it is a tag that needs to be updated
target_is_tag = run([GIT(), 'symbolic-ref', '-q', 'HEAD'], repo_path, quiet=True)
if not target_is_tag:
# update branch to latest (not needed for tags)
# this line assumes that the user has not gone and made local changes to the repo
ret = run([GIT(), 'merge', '--ff-only', 'origin/' + branch_or_tag], repo_path)
if ret != 0:
return False
run([GIT(), 'submodule', 'update', '--init'], repo_path, quiet=True)
except:
errlog('git operation failed!')
return False
print("Successfully updated and checked out branch/tag '" + branch_or_tag + "' on repository '" + repo_path + "'")
print("Current repository version: " + git_repo_version(repo_path))
return True
def git_clone_checkout_and_pull(url, dstpath, branch):
debug_print('git_clone_checkout_and_pull(url=' + url + ', dstpath=' + dstpath + ', branch=' + branch + ')')
success = git_clone(url, dstpath)
if not success:
return False
success = git_checkout_and_pull(dstpath, branch)
return success
# Each tool can have its own build type, or it can be overridden on the command
# line.
def decide_cmake_build_type(tool):
if CMAKE_BUILD_TYPE_OVERRIDE:
return CMAKE_BUILD_TYPE_OVERRIDE
else:
return tool.cmake_build_type
# The root directory of the build.
def llvm_build_dir(tool):
generator_suffix = ''
if CMAKE_GENERATOR == 'Visual Studio 15':
generator_suffix = '_vs2017'
elif CMAKE_GENERATOR == 'Visual Studio 16':
generator_suffix = '_vs2019'
elif CMAKE_GENERATOR == 'MinGW Makefiles':
generator_suffix = '_mingw'
bitness_suffix = '_32' if tool.bitness == 32 else '_64'
if hasattr(tool, 'git_branch'):
build_dir = 'build_' + tool.git_branch.replace(os.sep, '-') + generator_suffix + bitness_suffix
else:
build_dir = 'build_' + tool.version + generator_suffix + bitness_suffix
return build_dir
def exe_suffix(filename):
if WINDOWS and not filename.endswith('.exe'):
filename += '.exe'
return filename
# The directory where the binaries are produced. (relative to the installation
# root directory of the tool)
def fastcomp_build_bin_dir(tool):
build_dir = llvm_build_dir(tool)
if WINDOWS and 'Visual Studio' in CMAKE_GENERATOR:
old_llvm_bin_dir = os.path.join(build_dir, 'bin', decide_cmake_build_type(tool))
new_llvm_bin_dir = None
default_cmake_build_type = decide_cmake_build_type(tool)
cmake_build_types = [default_cmake_build_type, 'Release', 'RelWithDebInfo', 'MinSizeRel', 'Debug']
for build_type in cmake_build_types:
d = os.path.join(build_dir, build_type, 'bin')
if os.path.isfile(os.path.join(tool.installation_path(), d, exe_suffix('clang'))):
new_llvm_bin_dir = d
break
if new_llvm_bin_dir and os.path.exists(os.path.join(tool.installation_path(), new_llvm_bin_dir)):
return new_llvm_bin_dir
elif os.path.exists(os.path.join(tool.installation_path(), old_llvm_bin_dir)):
return old_llvm_bin_dir
return os.path.join(build_dir, default_cmake_build_type, 'bin')
else:
return os.path.join(build_dir, 'bin')
def build_env(generator):
build_env = os.environ.copy()
# To work around a build issue with older Mac OS X builds, add -stdlib=libc++ to all builds.
# See https://groups.google.com/forum/#!topic/emscripten-discuss/5Or6QIzkqf0
if MACOS:
build_env['CXXFLAGS'] = ((build_env['CXXFLAGS'] + ' ') if hasattr(build_env, 'CXXFLAGS') else '') + '-stdlib=libc++'
elif 'Visual Studio 15' in generator or 'Visual Studio 16' in generator:
if 'Visual Studio 16' in generator:
path = vswhere(16)
else:
path = vswhere(15)
# Configuring CMake for Visual Studio needs and env. var VCTargetsPath to be present.
# How this is supposed to work is unfortunately very undocumented. See
# https://discourse.cmake.org/t/cmake-failed-to-get-the-value-of-vctargetspath-with-vs2019-16-7/1839/16
# for some conversation. Try a couple of common paths if one of them would work.
# In the future as new versions of VS come out, we likely need to add new paths into this list.
if 'VCTargetsPath' not in build_env:
vctargets_paths = [
os.path.join(path, 'MSBuild\\Microsoft\\VC\\v160\\'),
os.path.join(path, 'Common7\\IDE\\VC\\VCTargets')
]
for p in vctargets_paths:
if os.path.isfile(os.path.join(p, 'Microsoft.Cpp.Default.props')):
debug_print('Set env. var VCTargetsPath=' + p + ' for CMake.')
build_env['VCTargetsPath'] = p
break
else:
debug_print('Searched path ' + p + ' as candidate for VCTargetsPath, not working.')
if 'VCTargetsPath' not in build_env:
errlog('Unable to locate Visual Studio compiler installation for generator "' + generator + '"!')
errlog('Either rerun installation in Visual Studio Command Prompt, or locate directory to Microsoft.Cpp.Default.props manually')
sys.exit(1)
# CMake and VS2017 cl.exe needs to have mspdb140.dll et al. in its PATH.
vc_bin_paths = [vs_filewhere(path, 'amd64', 'cl.exe'),
vs_filewhere(path, 'x86', 'cl.exe')]
for path in vc_bin_paths:
if os.path.isdir(path):
build_env['PATH'] = build_env['PATH'] + ';' + path
return build_env
def get_generator_for_sln_file(sln_file):
contents = open(sln_file, 'r').read()
if '# Visual Studio 16' in contents or '# Visual Studio Version 16' in contents: # VS2019
return 'Visual Studio 16'
if '# Visual Studio 15' in contents: # VS2017
return 'Visual Studio 15'
raise Exception('Unknown generator used to build solution file ' + sln_file)
def find_msbuild(sln_file):
# The following logic attempts to find a Visual Studio version specific
# MSBuild.exe from a list of known locations.
generator = get_generator_for_sln_file(sln_file)
debug_print('find_msbuild looking for generator ' + str(generator))
if generator == 'Visual Studio 16': # VS2019
path = vswhere(16)
search_paths = [os.path.join(path, 'MSBuild/Current/Bin'),
os.path.join(path, 'MSBuild/15.0/Bin/amd64'),
os.path.join(path, 'MSBuild/15.0/Bin')]
elif generator == 'Visual Studio 15': # VS2017
path = vswhere(15)
search_paths = [os.path.join(path, 'MSBuild/15.0/Bin/amd64'),