blob: 9ba9c1b4216d88a8714800f3c00ef5e09ba67163 [file] [log] [blame]
#!/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 zipfile
if sys.version_info >= (3,):
from urllib.parse import urljoin
from urllib.request import urlopen
import functools
from urlparse import urljoin
from urllib2 import urlopen
# EMSDK_DEV is a developer mode flag, which, if true, the SDK is downloaded from
# a 'staging' online source, instead of the public source. New releases are
# first deployed to the staging source for testing, before being published to
# the public. Don't enable this unless you develop EMSDK itself and need to
# access the staging source repository instead.
EMSDK_DEV = int(os.environ.get('EMSDK_DEV', '0'))
print('EMSDK_DEV active.')
emsdk_master_server = ''
emsdk_master_server = ''
emsdk_packages_url = emsdk_master_server
emscripten_releases_repo = ''
emscripten_releases_download_url_template = ""
emsdk_zip_download_url = ''
zips_subdir = 'zips/'
# 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())
if == '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()):
MSYS = False
if os.getenv('MSYSTEM'):
MSYS = True
if os.getenv('MSYSTEM') != 'MSYS' and os.getenv('MSYSTEM') != 'MINGW64':
print('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.')
OSX = False
if platform.mac_ver()[0] != '':
OSX = True
LINUX = False
if not OSX and (platform.system() == 'Linux' or == 'posix'):
LINUX = True
ARCH = 'unknown'
# platform.machine() may return AMD64 on windows, so standardize the case.
machine = 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 platform.machine().startswith('arm'):
ARCH = 'arm'
print("Warning: 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)))
# If true, perform a --shallow clone of git.
# If true, LLVM backend is built with tests enabled, and Binaryen is built with
# Visual Studio static analyzer enabled.
# If 'auto', assertions are decided by the build type
# (Release&MinSizeRel=disabled, Debug&RelWithDebInfo=enabled)
# Other valid values are 'ON' and 'OFF'
emscripten_config_directory = None
EMSDK_SET_ENV = 'emsdk_set_env.ps1' if POWERSHELL else 'emsdk_set_env.bat' if (WINDOWS and not MSYS) else ''
ARCHIVE_SUFFIXES = ('zip', '.tar', '.gz', '.xz', '.tbz2', '.bz2')
def os_name():
return 'win'
elif LINUX:
return 'linux'
elif OSX:
return 'osx'
raise Exception('unknown OS')
def os_name_for_emscripten_releases():
return 'win'
elif LINUX:
return 'linux'
elif OSX:
return 'mac'
raise Exception('unknown OS')
def debug_print(msg, **args):
print(msg, **args)
def to_unix_path(p):
return p.replace('\\', '/')
def emsdk_path():
return to_unix_path(os.path.dirname(os.path.realpath(__file__)))
# Returns the absolute path to the file '.emscripten' for the current user on this system.
def dot_emscripten_path():
return os.path.join(emscripten_config_directory, ".emscripten")
# 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
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):
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 len(output) == 0:
output = json.loads(subprocess.check_output([vswhere_path, '-latest', '-version', '[%s.0,%s.0)' % (version, version + 1), '-products', '*', '-property', 'installationPath', '-format', 'json']))
return str(output[0]['installationPath']) if len(output) > 0 else ''
except Exception:
return ''
def vs_filewhere(installation_path, platform, file):
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'
# Detect which CMake generator to use when building on Windows
if '--mingw' in sys.argv:
elif '--vs2013' in sys.argv:
CMAKE_GENERATOR = 'Visual Studio 12'
elif '--vs2015' in sys.argv:
CMAKE_GENERATOR = 'Visual Studio 14'
elif '--vs2017' in sys.argv:
CMAKE_GENERATOR = 'Visual Studio 15'
program_files = os.environ['ProgramFiles(x86)'] if 'ProgramFiles(x86)' in os.environ else os.environ['ProgramFiles']
vs2017_exists = len(vswhere(15)) > 0
vs2015_exists = 'VS140COMNTOOLS' in os.environ or 'VSSDK140Install' in os.environ or os.path.isdir(os.path.join(program_files, 'Microsoft Visual Studio 14.0'))
vs2013_exists = 'VS120COMNTOOLS' in os.environ or os.path.isdir(os.path.join(program_files, 'Microsoft Visual Studio 12.0'))
mingw_exists = which('mingw32-make') is not None and which('g++') is not None
if vs2015_exists:
CMAKE_GENERATOR = 'Visual Studio 14'
elif vs2017_exists:
# VS2017 has an LLVM build issue, see
CMAKE_GENERATOR = 'Visual Studio 15'
elif mingw_exists:
elif vs2013_exists:
# VS2013 is no longer supported, so attempt it as a last resort if someone
# might want to insist using it.
CMAKE_GENERATOR = 'Visual Studio 12'
# No detected generator
sys.argv = [a for a in sys.argv if a not in ('--mingw', '--vs2013', '--vs2015', '--vs2017')]
# Computes a suitable path prefix to use when building with a given generator.
def cmake_generator_prefix():
if CMAKE_GENERATOR == 'Visual Studio 15':
return '_vs2017'
elif CMAKE_GENERATOR == 'Visual Studio 14':
return '_vs2015'
elif CMAKE_GENERATOR == 'MinGW Makefiles':
return '_mingw'
# Unix Makefiles and Visual Studio 2013 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) + ')')
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)
shutil.rmtree(d, onerror=remove_readonly_and_try_again)
except Exception as e:
debug_print('remove_tree threw an exception, ignoring: ' + str(e))
def import_pywin32():
import win32api
import win32con
return win32api, win32con
except Exception:
exit_with_error('Failed to import Python Windows extensions win32api and win32con. Make sure you are using the version of python available in emsdk, or install PyWin extensions to the distribution of Python you are attempting to use. (This script was launched in python instance from "' + sys.executable + '")')
def win_set_environment_variable_direct(key, value, system=True):
prev_path = os.environ['PATH']
py = find_used_python()
if py:
py_path = to_native_path(py.expand_vars(py.activated_path))
os.environ['PATH'] = os.environ['PATH'] + ';' + py_path
win32api, win32con = import_pywin32()
if system:
# Read globally from ALL USERS section.
folder = win32api.RegOpenKeyEx(win32con.HKEY_LOCAL_MACHINE, 'SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment', 0, win32con.KEY_ALL_ACCESS)
# Register locally from CURRENT USER section.
folder = win32api.RegOpenKeyEx(win32con.HKEY_CURRENT_USER, 'Environment', 0, win32con.KEY_ALL_ACCESS)
win32api.RegSetValueEx(folder, key, 0, win32con.REG_EXPAND_SZ, value)
debug_print('Set key=' + key + ' with value ' + value + ' in registry.')
except Exception as e:
# 'Access is denied.'
if e.args[0] == 5:
exit_with_error('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.')
print('Failed to write environment variable ' + key + ':', file=sys.stderr)
print(str(e), file=sys.stderr)
os.environ['PATH'] = prev_path
return None
os.environ['PATH'] = prev_path
win32api.PostMessage(win32con.HWND_BROADCAST, win32con.WM_SETTINGCHANGE, 0, 'Environment')
def win_get_environment_variable(key, system=True):
prev_path = os.environ['PATH']
py = find_used_python()
if py:
py_path = to_native_path(py.expand_vars(py.activated_path))
os.environ['PATH'] = os.environ['PATH'] + ';' + py_path
import win32api
import win32con
if system:
# Read globally from ALL USERS section.
folder = win32api.RegOpenKey(win32con.HKEY_LOCAL_MACHINE, 'SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment')
# Register locally from CURRENT USER section.
folder = win32api.RegOpenKey(win32con.HKEY_CURRENT_USER, 'Environment')
value = str(win32api.RegQueryValueEx(folder, key)[0])
except Exception:
# PyWin32 is not available - 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.
return os.environ[key]
except Exception as e:
if e.args[0] != 2:
# 'The system cannot find the file specified.'
print('Failed to read environment variable ' + key + ':', file=sys.stderr)
print(str(e), file=sys.stderr)
except Exception:
os.environ['PATH'] = prev_path
return None
os.environ['PATH'] = prev_path
return value
def win_environment_variable_exists(key, system=True):
value = win_get_environment_variable(key, system)
return value is not None and len(value) > 0
def win_get_active_environment_variable(key):
value = win_get_environment_variable(key, False)
if value is not None:
return value
return win_get_environment_variable(key, True)
def win_set_environment_variable(key, value, system=True):
debug_print('set ' + str(key) + '=' + str(value) + ', in system=' + str(system), file=sys.stderr)
previous_value = win_get_environment_variable(key, system)
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.
if not value:
if system:
cmd = ['REG', 'DELETE', 'SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment', '/V', key, '/f']
cmd = ['REG', 'DELETE', 'HKCU\\Environment', '/V', key, '/f']
value =, stdout=subprocess.PIPE)
except Exception:
if system:
win_set_environment_variable_direct(key, value, system)
# Escape % signs so that we don't expand references to environment variables.
value = value.replace('%', '^%')
if len(value) >= 1024:
exit_with_error('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.', file=sys.stderr)
cmd = ['SETX', key, value]
retcode =, stdout=subprocess.PIPE)
if retcode != 0:
print('ERROR! Failed to set environment variable ' + key + '=' + value + '. You may need to set it manually.', file=sys.stderr)
except Exception as e:
print('ERROR! Failed to set environment variable ' + key + '=' + value + ':', file=sys.stderr)
print(str(e), file=sys.stderr)
print('You may need to set it manually.', file=sys.stderr)
def win_delete_environment_variable(key, system=True):
debug_print('win_delete_environment_variable(key=' + key + ', system=' + str(system) + ')')
win_set_environment_variable(key, None, system)
# 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 + ')')
def fix_lineendings(filename):
def mkdir_p(path):
debug_print('mkdir_p(' + path + ')')
if os.path.exists(path):
except OSError as exc: # Python >2.5
if exc.errno == errno.EEXIST and os.path.isdir(path):
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):
debug_print('run(cmd=' + str(cmd) + ', cwd=' + str(cwd) + ')')
process = subprocess.Popen(cmd, cwd=cwd, env=os.environ.copy())
if process.returncode != 0:
print(str(cmd) + ' failed with error code ' + str(process.returncode) + '!')
return process.returncode
def untargz(source_filename, dest_dir, unpack_even_if_exists=False):
debug_print('untargz(source_filename=' + source_filename + ', dest_dir=' + dest_dir + ')')
if not unpack_even_if_exists and num_files_in_directory(dest_dir) > 0:
print("File '" + source_filename + "' has already been unpacked, skipping.")
return True
print("Unpacking '" + source_filename + "' to '" + dest_dir + "'")
run(['tar', '-xvf' if VERBOSE else '-xf', sdk_path(source_filename), '--strip', '1'], cwd=dest_dir)
# tfile =, 'r:gz')
# tfile.extractall(dest_dir)
return True
# 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 and
# 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:
print('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
return '\\\\?\\' + os.path.normpath(pathname.replace('/', '\\'))
# 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.rename(src, dest)
def unzip(source_filename, dest_dir, unpack_even_if_exists=False):
debug_print('unzip(source_filename=' + source_filename + ', dest_dir=' + dest_dir + ')')
if not unpack_even_if_exists and num_files_in_directory(dest_dir) > 0:
print("File '" + source_filename + "' has already been unpacked, skipping.")
return True
print("Unpacking '" + source_filename + "' to '" + dest_dir + "'")
common_subdir = None
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
common_subdir = None
unzip_to_dir = dest_dir
if common_subdir:
unzip_to_dir = os.path.join('/'.join(dest_dir.split('/')[:-1]), '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:
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):
parent_dir = os.path.dirname(fix_potentially_long_windows_pathname(final_dst_filename))
if parent_dir and not os.path.exists(parent_dir):
move_with_overwrite(fix_potentially_long_windows_pathname(dst_filename), fix_potentially_long_windows_pathname(final_dst_filename))
if common_subdir:
except zipfile.BadZipfile as e:
print("Unzipping file '" + source_filename + "' failed due to reason: " + str(e) + "! Removing the corrupted zip file.")
return False
except Exception as e:
print("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
return True
def get_content_length(download):
meta =
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:
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)
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
u = urlopen(url)
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))
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 = 8192
if not TTY_OUTPUT:
print(' [', end='')
while True:
buffer =
if not buffer:
file_size_dl += len(buffer)
if file_size:
percent = file_size_dl * 100.0 / file_size
status = r" %10d [%3.02f%%]" % (file_size_dl, percent)
print(status, end='\r')
while progress_shown < progress_max * percent / 100:
print('-', end='')
progress_shown += 1
if not TTY_OUTPUT:
except Exception as e:
print("Error: Downloading URL '" + url + "': " + str(e))
if "SSL: CERTIFICATE_VERIFY_FAILED" in str(e) or "urlopen error unknown url type: https" in str(e):
print("Warning: Possibly SSL/TLS issue. Update or install Python SSL root certificates (2048-bit or greater) supplied in Python folder or and try again.")
return None
except KeyboardInterrupt:
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:
ret, stdout, stderr = run_get_output([git, '--version'])
if ret == 0:
return git
if must_succeed:
msg = "ERROR: git executable was not found. Please install it by typing 'emsdk install git-1.9.4', or alternatively by installing it manually from . If you install git manually, remember to add it to PATH"
elif OSX:
msg = "ERROR: git executable was not found. Please install git for this operation! This can be done from , or by installing XCode and then the XCode Command Line Tools (see )"
elif LINUX:
msg = "ERROR: git executable was not found. Please install git for this operation! This can be probably be done using your package manager, see"
msg = "ERROR: git executable was not found. Please install git for this operation!"
# 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()
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')
return []
def git_clone(url, dstpath):
debug_print('git_clone(url=' + url + ', dstpath=' + dstpath + ')')
if os.path.isdir(os.path.join(dstpath, '.git')):
print("Repository '" + url + "' already cloned to directory '" + dstpath + "', skipping.")
return True
git_clone_args = []
git_clone_args += ['--depth', '1']
return run([GIT(), 'clone'] + git_clone_args + [url, dstpath]) == 0
def git_checkout_and_pull(repo_path, branch):
debug_print('git_checkout_and_pull(repo_path=' + repo_path + ', branch=' + branch + ')')
ret = run([GIT(), 'fetch', 'origin'], repo_path)
if ret != 0:
return False
print("Fetching latest changes to the branch '" + branch + "' for '" + repo_path + "'...")
ret = run([GIT(), 'fetch', 'origin'], repo_path)
if ret != 0:
return False
# run([GIT, 'checkout', '-b', branch, '--track', 'origin/'+branch], repo_path)
# 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', '--quiet', branch], repo_path)
if ret != 0:
return False
# this line assumes that the user has not gone and made local changes to the repo
ret = run([GIT(), 'merge', '--ff-only', 'origin/' + branch], repo_path)
if ret != 0:
return False
print('git operation failed!')
return False
print("Successfully updated and checked out branch '" + branch + "' 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):
return tool.cmake_build_type
# The root directory of the build.
def fastcomp_build_dir(tool):
generator_suffix = ''
if CMAKE_GENERATOR == 'Visual Studio 10':
generator_suffix = '_vs2010'
elif CMAKE_GENERATOR == 'Visual Studio 11':
generator_suffix = '_vs2012'
elif CMAKE_GENERATOR == 'Visual Studio 12':
generator_suffix = '_vs2013'
elif CMAKE_GENERATOR == 'Visual Studio 14':
generator_suffix = '_vs2015'
elif CMAKE_GENERATOR == 'Visual Studio 15':
generator_suffix = '_vs2017'
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
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 = fastcomp_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
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')
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!topic/emscripten-discuss/5Or6QIzkqf0
if OSX:
build_env['CXXFLAGS'] = ((build_env['CXXFLAGS'] + ' ') if hasattr(build_env, 'CXXFLAGS') else '') + '-stdlib=libc++'
elif 'Visual Studio 15' in generator:
path = vswhere(15)
build_env['VCTargetsPath'] = os.path.join(path, 'Common7\\IDE\\VC\\VCTargets')
# 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
elif 'Visual Studio 14' in generator or 'Visual Studio 2015' in generator:
build_env['VCTargetsPath'] = os.path.join(os.environ['ProgramFiles(x86)'], 'MSBuild/Microsoft.Cpp/v4.0/V140')
# CMake and VS2015 cl.exe needs to have mspdb140.dll et al. in its PATH.
vc_bin_paths = [os.path.join(os.environ['ProgramFiles'], 'Microsoft Visual Studio 14.0\\VC\\bin'),
os.path.join(os.environ['ProgramFiles(x86)'], 'Microsoft Visual Studio 14.0\\VC\\bin')]
for path in vc_bin_paths:
if os.path.isdir(path):
build_env['PATH'] = build_env['PATH'] + ';' + path
elif 'Visual Studio 12' in generator or 'Visual Studio 2013' in generator:
build_env['VCTargetsPath'] = os.path.join(os.environ['ProgramFiles(x86)'], 'MSBuild/Microsoft.Cpp/v4.0/V120')
return build_env
def get_generator_for_sln_file(sln_file):
contents = open(sln_file, 'r').read()
if '# Visual Studio 15' in contents:
return 'Visual Studio 15'
if '# Visual Studio Express 2015' in contents or '# Visual Studio 2015' in contents or '# Visual Studio 14' in contents:
return 'Visual Studio 14'
if '# Visual Studio Express 2013' in contents or '# Visual Studio 2013' in contents or '# Visual Studio 12' in contents:
return 'Visual Studio 12'
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. This logic exists because it was
# detected that when multiple Visual Studio versions exist (VS2013 & VS2015),
# their MSBuild.exes might not be able to drive a build proper. This search is
# messy, and perhaps in VS >= 2017 or similar none of this logic would be
# needed. Ideally would be able to do "cmake --build
# path/to/cmake/build/directory --config
# Debug|RelWithDebInfo|MinSizeRel|Release" across all platforms, but around
# VS2013 era this did not work. This could be reattempted when support for VS
# 2015 is dropped.
search_paths_vs2015 = [os.path.join(os.environ['ProgramFiles'], 'MSBuild/14.0/Bin/amd64'),
os.path.join(os.environ['ProgramFiles(x86)'], 'MSBuild/14.0/Bin/amd64'),
os.path.join(os.environ['ProgramFiles'], 'MSBuild/14.0/Bin'),
os.path.join(os.environ['ProgramFiles(x86)'], 'MSBuild/14.0/Bin')]
search_paths_vs2013 = [os.path.join(os.environ['ProgramFiles'], 'MSBuild/12.0/Bin/amd64'),
os.path.join(os.environ['ProgramFiles(x86)'], 'MSBuild/12.0/Bin/amd64'),
os.path.join(os.environ['ProgramFiles'], 'MSBuild/12.0/Bin'),
os.path.join(os.environ['ProgramFiles(x86)'], 'MSBuild/12.0/Bin')]
search_paths_old = [os.path.join(os.environ["WINDIR"], 'Microsoft.NET/Framework/v4.0.30319')]
generator = get_generator_for_sln_file(sln_file)
debug_print('find_msbuild looking for generator ' + str(generator))
if generator == 'Visual Studio 15':
path = vswhere(15)
search_paths = [os.path.join(path, 'MSBuild/15.0/Bin/amd64'),
os.path.join(path, 'MSBuild/15.0/Bin')]
elif generator == 'Visual Studio 14':
search_paths = search_paths_vs2015
elif generator == 'Visual Studio 12':
search_paths = search_paths_vs2013 + search_paths_old
raise Exception('Unknown generator!')
for path in search_paths:
p = os.path.join(path, 'MSBuild.exe')
debug_print('Searching for MSBuild.exe: ' + p)
if os.path.isfile(p):
return p
debug_print('MSBuild.exe in PATH? ' + str(which('MSBuild.exe')))
# Last fallback, try any MSBuild from PATH (might not be compatible, but best effort)
return which('MSBuild.exe')
def make_build(build_root, build_type, build_target_platform='x64'):
debug_print('make_build(build_root=' + build_root + ', build_type=' + build_type + ', build_target_platform=' + build_target_platform + ')')
global CPU_CORES
if CPU_CORES > 1:
print('Performing a parallel build with ' + str(CPU_CORES) + ' cores.')
print('Performing a singlethreaded build.')
generator_to_use = CMAKE_GENERATOR
if 'Visual Studio' in CMAKE_GENERATOR:
solution_name = str(subprocess.check_output(['dir', '/b', '*.sln'], shell=True, cwd=build_root).decode('utf-8').strip())
generator_to_use = get_generator_for_sln_file(os.path.join(build_root, solution_name))
# Disabled for now: Don't pass /maxcpucount argument to msbuild, since it
# looks like when building, msbuild already automatically spawns the full
# amount of logical cores the system has, and passing the number of
# logical cores here has been observed to give a quadratic N*N explosion
# on the number of spawned processes (e.g. on a Core i7 5960X with 16
# logical cores, it would spawn 16*16=256 cl.exe processes, which would
# start crashing when running out of system memory)
# make = [find_msbuild(os.path.join(build_root, solution_name)), '/maxcpucount:' + str(CPU_CORES), '/t:Build', '/p:Configuration=' + build_type, '/nologo', '/verbosity:minimal', solution_name]
make = [find_msbuild(os.path.join(build_root, solution_name)), '/t:Build', '/p:Configuration=' + build_type, '/p:Platform=' + build_target_platform, '/nologo', '/verbosity:minimal', solution_name]
make = ['mingw32-make', '-j' + str(CPU_CORES)]
make = ['cmake', '--build', '.', '--', '-j' + str(CPU_CORES)]
# Build
print('Running build: ' + str(make))
ret = subprocess.check_call(make, cwd=build_root, env=build_env(generator_to_use))
if ret != 0:
print('Build failed with exit code ' + ret + '!', file=sys.stderr)
print('Working directory: ' + build_root, file=sys.stderr)
return False
except Exception as e:
print('Build failed due to exception!', file=sys.stderr)
print('Working directory: ' + build_root, file=sys.stderr)
print(str(e), file=sys.stderr)
return False
return True
def cmake_configure(generator, build_root, src_root, build_type, extra_cmake_args=[]):
debug_print('cmake_configure(generator=' + str(generator) + ', build_root=' + str(build_root) + ', src_root=' + str(src_root) + ', build_type=' + str(build_type) + ', extra_cmake_args=' + str(extra_cmake_args) + ')')
# Configure
if not os.path.isdir(build_root):
# Create build output directory if it doesn't yet exist.
if generator:
generator = ['-G', generator]
generator = []
cmdline = ['cmake'] + generator + ['-DCMAKE_BUILD_TYPE=' + build_type, '-DPYTHON_EXECUTABLE=' + sys.executable] + extra_cmake_args + [src_root]
print('Running CMake: ' + str(cmdline))
def quote_parens(x):
if ' ' in x:
return '"' + x.replace('"', '\\"') + '"'
return x
# Create a file 'recmake.bat/sh' in the build root that user can call to
# manually recmake the build tree with the previous build params
open(os.path.join(build_root, 'recmake.' + ('bat' if WINDOWS else 'sh')), 'w').write(' '.join(map(quote_parens, cmdline)))
ret = subprocess.check_call(cmdline, cwd=build_root, env=build_env(CMAKE_GENERATOR))
if ret != 0:
print('CMake invocation failed with exit code ' + ret + '!', file=sys.stderr)
print('Working directory: ' + build_root, file=sys.stderr)
return False
except OSError as e:
if e.errno == errno.ENOENT:
print(str(e), file=sys.stderr)
print('Could not run CMake, perhaps it has not been installed?', file=sys.stderr)
print('Installing this package requires CMake. Get it from', file=sys.stderr)
elif LINUX:
print('Installing this package requires CMake. Get it via your system package manager (e.g. sudo apt-get install cmake), or from', file=sys.stderr)
elif OSX:
print('Installing this package requires CMake. Get it via a OSX package manager (Homebrew: "brew install cmake", or MacPorts: "sudo port install cmake"), or from', file=sys.stderr)
return False
except Exception as e:
print('CMake invocation failed due to exception!', file=sys.stderr)
print('Working directory: ' + build_root, file=sys.stderr)
print(str(e), file=sys.stderr)
return False
return True
def xcode_sdk_version():
output = subprocess.check_output(['xcrun', '--show-sdk-version'])
if sys.version_info >= (3,):
output = output.decode('utf8')
return output.strip().split('.')
return subprocess.checkplatform.mac_ver()[0].split('.')
def build_llvm_tool(tool):
debug_print('build_llvm_tool(' + str(tool) + ')')
fastcomp_root = tool.installation_path()
fastcomp_src_root = os.path.join(fastcomp_root, 'src')
# Does this tool want to be git cloned from github?
if hasattr(tool, 'git_branch'):
success = git_clone_checkout_and_pull(tool.download_url(), fastcomp_src_root, tool.git_branch)
if not success:
return False
clang_root = os.path.join(fastcomp_src_root, 'tools/clang')
success = git_clone_checkout_and_pull(tool.clang_url, clang_root, tool.git_branch)
if not success:
return False
if hasattr(tool, 'lld_url'):
lld_root = os.path.join(fastcomp_src_root, 'tools/lld')
success = git_clone_checkout_and_pull(tool.lld_url, lld_root, tool.git_branch)
if not success:
return False
# Not a git cloned tool, so instead download from git tagged releases
success = download_and_unzip(tool.download_url(), fastcomp_src_root, filename_prefix='llvm-e')
if not success:
return False
success = download_and_unzip(tool.windows_clang_url if WINDOWS else tool.unix_clang_url, os.path.join(fastcomp_src_root, 'tools/clang'), filename_prefix='clang-e')
if not success:
return False
cmake_generator = CMAKE_GENERATOR
if 'Visual Studio' in CMAKE_GENERATOR and tool.bitness == 64:
cmake_generator += ' Win64'
build_dir = fastcomp_build_dir(tool)
build_root = os.path.join(fastcomp_root, build_dir)
build_type = decide_cmake_build_type(tool)
# Configure
tests_arg = 'ON' if BUILD_FOR_TESTING else 'OFF'
enable_assertions = ENABLE_LLVM_ASSERTIONS.lower() == 'on' or (ENABLE_LLVM_ASSERTIONS == 'auto' and build_type.lower() != 'release' and build_type.lower() != 'minsizerel')
only_supports_wasm = hasattr(tool, 'only_supports_wasm')
if ARCH == 'x86' or ARCH == 'x86_64':
targets_to_build = 'X86'
elif ARCH == 'arm':
targets_to_build = 'ARM'
elif ARCH == 'aarch64':
targets_to_build = 'AArch64'
# May have problems with emconfigure
targets_to_build = ''
if not only_supports_wasm:
if targets_to_build != '':
targets_to_build += ';'
targets_to_build += 'JSBackend'
args = ['-DLLVM_TARGETS_TO_BUILD=' + targets_to_build, '-DLLVM_INCLUDE_EXAMPLES=OFF', '-DCLANG_INCLUDE_EXAMPLES=OFF', '-DLLVM_INCLUDE_TESTS=' + tests_arg, '-DCLANG_INCLUDE_TESTS=' + tests_arg, '-DLLVM_ENABLE_ASSERTIONS=' + ('ON' if enable_assertions else 'OFF')]
if os.environ.get('LLVM_CMAKE_ARGS'):
extra_args = os.environ['LLVM_CMAKE_ARGS'].split(',')
print('Passing the following extra arguments to LLVM CMake configuration: ' + str(extra_args))
args += extra_args
# MacOS < 10.13 workaround for LLVM build bug
# specify HAVE_FUTIMENS=0 in the build if building with target SDK that is older than 10.13.
if OSX and (not os.environ.get('LLVM_CMAKE_ARGS') or 'HAVE_FUTIMENS' not in os.environ.get('LLVM_CMAKE_ARGS')) and xcode_sdk_version() < ['10', '13']:
print('Passing -DHAVE_FUTIMENS=0 to LLVM CMake configure to workaround Please update to macOS 10.13 or newer')
args += ['-DHAVE_FUTIMENS=0']
success = cmake_configure(cmake_generator, build_root, fastcomp_src_root, build_type, args)
if not success:
return False
# Make
success = make_build(build_root, build_type, 'x64' if tool.bitness == 64 else 'Win32')
return success
# Emscripten asm.js optimizer build scripts:
def optimizer_build_root(tool):
build_root = tool.installation_path().strip()
if build_root.endswith('/') or build_root.endswith('\\'):
build_root = build_root[:-1]
generator_prefix = cmake_generator_prefix()
build_root = build_root + generator_prefix + '_' + str(tool.bitness) + 'bit_optimizer'
return build_root
def uninstall_optimizer(tool):
debug_print('uninstall_optimizer(' + str(tool) + ')')
build_root = optimizer_build_root(tool)
print("Deleting path '" + build_root + "'")
def is_optimizer_installed(tool):
build_root = optimizer_build_root(tool)
return os.path.exists(build_root)
def build_optimizer_tool(tool):
debug_print('build_optimizer_tool(' + str(tool) + ')')
src_root = os.path.join(tool.installation_path(), 'tools', 'optimizer')
build_root = optimizer_build_root(tool)
build_type = decide_cmake_build_type(tool)
# Configure
cmake_generator = CMAKE_GENERATOR
if 'Visual Studio' in CMAKE_GENERATOR and tool.bitness == 64:
cmake_generator += ' Win64'
success = cmake_configure(cmake_generator, build_root, src_root, build_type)
if not success:
return False
# Make
success = make_build(build_root, build_type, 'x64' if tool.bitness == 64 else 'Win32')
return success
# Binaryen build scripts:
def binaryen_build_root(tool):
build_root = tool.installation_path().strip()
if build_root.endswith('/') or build_root.endswith('\\'):
build_root = build_root[:-1]
generator_prefix = cmake_generator_prefix()
build_root = build_root + generator_prefix + '_' + str(tool.bitness) + 'bit_binaryen'
return build_root
def uninstall_binaryen(tool):
debug_print('uninstall_binaryen(' + str(tool) + ')')
build_root = binaryen_build_root(tool)
print("Deleting path '" + build_root + "'")
def is_binaryen_installed(tool):
build_root = binaryen_build_root(tool)
return os.path.exists(build_root)
def build_binaryen_tool(tool):
debug_print('build_binaryen_tool(' + str(tool) + ')')
src_root = tool.installation_path()
build_root = binaryen_build_root(tool)
build_type = decide_cmake_build_type(tool)
# Configure
args = []
cmake_generator = CMAKE_GENERATOR
if 'Visual Studio' in CMAKE_GENERATOR:
if tool.bitness == 64:
cmake_generator += ' Win64'
success = cmake_configure(cmake_generator, build_root, src_root, build_type, args)
if not success:
return False
# Make
success = make_build(build_root, build_type, 'x64' if tool.bitness == 64 else 'Win32')
# Deploy scripts needed from source repository to build directory
remove_tree(os.path.join(build_root, 'scripts'))
shutil.copytree(os.path.join(src_root, 'scripts'), os.path.join(build_root, 'scripts'))
remove_tree(os.path.join(build_root, 'src', 'js'))
shutil.copytree(os.path.join(src_root, 'src', 'js'), os.path.join(build_root, 'src', 'js'))
return success
def download_and_unzip(zipfile, dest_dir, download_even_if_exists=False, filename_prefix=''):
debug_print('download_and_unzip(zipfile=' + zipfile + ', dest_dir=' + dest_dir + ')')
url = urljoin(emsdk_packages_url, zipfile)
download_target = get_download_target(url, zips_subdir, filename_prefix)
# If the archive was already downloaded, and the directory it would be
# unpacked to has contents, assume it's the same contents and skip.
if not download_even_if_exists and os.path.exists(download_target) and num_files_in_directory(dest_dir) > 0:
print("The contents of file '" + zipfile + "' already exist in destination '" + dest_dir + "', skipping.")
return True
# Otherwise, if the archive must be downloaded, always write into the
# target directory, since it may be a new version of a tool that gets
# installed to the same place (that is, a different download name
# indicates different contents).
download_even_if_exists = True
received_download_target = download_file(url, zips_subdir, download_even_if_exists, filename_prefix)
if not received_download_target:
return False
assert received_download_target == download_target
if zipfile.endswith('.zip'):
return unzip(download_target, dest_dir, unpack_even_if_exists=download_even_if_exists)
return untargz(download_target, dest_dir, unpack_even_if_exists=download_even_if_exists)
def to_native_path(p):
if WINDOWS and not MSYS:
return to_unix_path(p).replace('/', '\\')
return to_unix_path(p)
# Finds and returns a list of the directories that need to be added to PATH for
# the given set of tools.
def get_required_path(active_tools):
path_add = [to_native_path(emsdk_path())]
for tool in active_tools:
if hasattr(tool, 'activated_path'):
path_add += [to_native_path(tool.expand_vars(tool.activated_path))]
return path_add
dot_emscripten = {}
def parse_key_value(line):
if not line:
return ('', '')
eq = line.find('=')
if eq != -1:
key = line[0:eq].strip()
value = line[eq + 1:].strip()
return (key, value)
return (key, '')
def load_dot_emscripten():
lines = []
lines = open(dot_emscripten_path(), "r").read().split('\n')
for line in lines:
key, value = parse_key_value(line)
if value != '':
dot_emscripten[key] = value
# print("Got '" + key + "' = '" + value + "'")
def generate_dot_emscripten(active_tools):
global emscripten_config_directory
# Different tools may provide the same activated configs; the latest to be
# activated is the relevant one.
activated_config = OrderedDict()
for tool in active_tools:
tool_cfg = tool.activated_config()
if tool_cfg:
for specific_cfg in tool_cfg.split(';'):
name, value = specific_cfg.split('=')
activated_config[name] = value
active_config = os.path.join(emsdk_path(), '.active_config')
# Activating the emsdk tools locally relative to Emscripten SDK directory.
if 'EMSCRIPTEN_ROOT' not in activated_config:
exit_with_error('EMSCRIPEN_ROOT is not configured any actived tools')
emscripten_config_directory = activated_config['EMSCRIPTEN_ROOT'].strip('"\'')
with open(active_config, 'w') as f:
f.write(dot_emscripten_path() + '\n')
temp_dir = sdk_path('tmp')
# Use a sensible default for NODE_JS
if 'NODE_JS' not in activated_config:
node_fallback = which('nodejs')
if not node_fallback:
node_fallback = 'node'
activated_config['NODE_JS'] = node_fallback
cfg = ''
for name, value in activated_config.items():
cfg += name + ' = ' + value + '\n'
cfg += '''\
TEMP_DIR = '%s'
''' % temp_dir
print('Writing .emscripten configuration file: ' + dot_emscripten_path())
with open(dot_emscripten_path(), "w") as text_file:
print('Configuation contains the following contents:')
path_add = get_required_path(active_tools)
if not WINDOWS:
emsdk_env = os.path.relpath(sdk_path(''))
if '/' not in emsdk_env:
emsdk_env = './'
print("To conveniently access the selected set of tools from the command line, consider adding the following directories to PATH, or call 'source " + emsdk_env + "' to do this for you.")
print(' ' + ENVPATH_SEPARATOR.join(path_add))
def find_msbuild_dir():
if 'ProgramFiles' in os.environ and os.environ['ProgramFiles']:
program_files = os.environ['ProgramFiles']
program_files = 'C:/Program Files'
if 'ProgramFiles(x86)' in os.environ and os.environ['ProgramFiles(x86)']:
program_files_x86 = os.environ['ProgramFiles(x86)']
program_files_x86 = 'C:/Program Files (x86)'
MSBUILDX86_DIR = os.path.join(program_files_x86, "MSBuild/Microsoft.Cpp/v4.0/Platforms")
MSBUILD_DIR = os.path.join(program_files, "MSBuild/Microsoft.Cpp/v4.0/Platforms")
if os.path.exists(MSBUILDX86_DIR):
if os.path.exists(MSBUILD_DIR):
# No MSbuild installed.
return ''
def get_installed_vstool_version(installed_path):
return open(installed_path + "/version.txt", "r").read()
return None
class Tool(object):
def __init__(self, data):
# Convert the dictionary representation of the tool in 'data' to members of
# this class for convenience.
for key, value in data.items():
# Python2 compat, convert unicode to str
if sys.version_info < (3,) and isinstance(value, unicode): # noqa
value = value.encode('Latin-1')
setattr(self, key, value)
# Cache the name ID of this Tool (these are read very often) = + '-' + self.version
if hasattr(self, 'bitness'): += '-' + str(self.bitness) + 'bit'
def __str__(self):
def __repr__(self):
def expand_vars(self, str):
if WINDOWS and '%MSBuildPlatformsDir%' in str:
str = str.replace('%MSBuildPlatformsDir%', find_msbuild_dir())
if '%cmake_build_type_on_win%' in str:
str = str.replace('%cmake_build_type_on_win%', (decide_cmake_build_type(self) + '/') if WINDOWS else '')
if '%installation_dir%' in str:
str = str.replace('%installation_dir%', sdk_path(self.installation_dir()))
if '%generator_prefix%' in str:
str = str.replace('%generator_prefix%', cmake_generator_prefix())
str = str.replace('%.exe%', '.exe' if WINDOWS else '')
if '%fastcomp_build_dir%' in str:
str = str.replace('%fastcomp_build_dir%', fastcomp_build_dir(self))
if '%fastcomp_build_bin_dir%' in str:
str = str.replace('%fastcomp_build_bin_dir%', fastcomp_build_bin_dir(self))
return str
# Return true if this tool requires building from source, and false if this is a precompiled tool.
def needs_compilation(self):
if hasattr(self, 'cmake_build_type'):
return True
if hasattr(self, 'uses'):
for tool_name in self.uses:
tool = find_tool(tool_name)
if not tool:
debug_print('Tool ' + str(self) + ' depends on ' + tool_name + ' which does not exist!')
if tool.needs_compilation():
return True
return False
# Specifies the target path where this tool will be installed to. This could
# either be a directory or a filename (e.g. in case of node.js)
def installation_path(self):
if WINDOWS and hasattr(self, 'windows_install_path'):
pth = self.expand_vars(self.windows_install_path)
return sdk_path(pth)
if hasattr(self, 'install_path'):
pth = self.expand_vars(self.install_path)
return sdk_path(pth)
p = self.version
if hasattr(self, 'bitness') and (not hasattr(self, 'append_bitness') or self.append_bitness):
p += '_' + str(self.bitness) + 'bit'
return sdk_path(os.path.join(, p))
# Specifies the target directory this tool will be installed to.
def installation_dir(self):
dir = self.installation_path()
if path_points_to_directory(dir):
return dir
return os.path.dirname(dir)
# Returns the configuration item that needs to be added to .emscripten to make
# this Tool active for the current user.
def activated_config(self):
if hasattr(self, 'activated_cfg'):
return to_unix_path(self.expand_vars(self.activated_cfg))
return ''
def activated_environment(self):
if hasattr(self, 'activated_env'):
return self.expand_vars(self.activated_env).split(';')
return []
def compatible_with_this_arch(self):
if hasattr(self, 'arch'):
if self.arch != ARCH:
return False
return True
def compatible_with_this_os(self):
if hasattr(self, 'os'):
if self.os == 'all':
return True
if self.compatible_with_this_arch() and ((WINDOWS and 'win' in self.os) or (LINUX and ('linux' in self.os or 'unix' in self.os)) or (OSX and ('osx' in self.os or 'unix' in self.os))):
return True
return False
if not hasattr(self, 'osx_url') and not hasattr(self, 'windows_url') and not hasattr(self, 'unix_url') and not hasattr(self, 'linux_url'):
return True
if OSX and hasattr(self, 'osx_url') and self.compatible_with_this_arch():
return True
if LINUX and hasattr(self, 'linux_url') and self.compatible_with_this_arch():
return True
if WINDOWS and (hasattr(self, 'windows_url') or hasattr(self, 'windows_install_path')) and self.compatible_with_this_arch():
return True
if UNIX and hasattr(self, 'unix_url'):
return True
return hasattr(self, 'url')
def is_installed(self):
# If this tool/sdk depends on other tools, require that all dependencies are
# installed for this tool to count as being installed.
if hasattr(self, 'uses'):
for tool_name in self.uses:
tool = find_tool(tool_name)
if tool is None:
print("Manifest error: No tool by name '" + tool_name + "' found! This may indicate an internal SDK error!")
return False
if not tool.is_installed():
return False
if self.download_url() is None:
# This tool does not contain downloadable elements, so it is installed by default.
return True
# For e.g. fastcomp clang from git repo, the activated PATH is the
# directory where the compiler is built to, and installation_path is
# the directory where the source tree exists. To distinguish between
# multiple packages sharing the same source (clang-master-32bit,
# clang-master-64bit, clang-incoming-32bit and clang-incoming-64bit each
# share the same git repo), require that in addition to the installation
# directory, each item in the activated PATH must exist.
activated_path = self.expand_vars(self.activated_path).split(';') if hasattr(self, 'activated_path') else [self.installation_path()]
def each_path_exists(pathlist):
for path in pathlist:
if not os.path.exists(path):
return False
return True
content_exists = os.path.exists(self.installation_path()) and each_path_exists(activated_path) and (os.path.isfile(self.installation_path()) or num_files_in_directory(self.installation_path()) > 0)
# vs-tool is a special tool since all versions must be installed to the
# same dir, so dir name will not differentiate the version.
if == 'vs-tool':
return content_exists and get_installed_vstool_version(self.installation_path()) == self.version
if hasattr(self, 'custom_is_installed_script'):
if self.custom_is_installed_script == 'is_optimizer_installed':
return is_optimizer_installed(self)
elif self.custom_is_installed_script == 'is_binaryen_installed':
return is_binaryen_installed(self)
raise Exception('Unknown custom_is_installed_script directive "' + self.custom_is_installed_script + '"!')
return content_exists
def is_active(self):
if not self.is_installed():
return False
if == 'vs-tool':
# vs-tool is a special tool since all versions must be installed to the
# same dir, which means that if this tool is installed, it is also active.
return True
# All dependencies of this tool must be active as well.
deps = self.dependencies()
for tool in deps:
if not tool.is_active():
return False
activated_cfg = self.activated_config()
if activated_cfg == '':
return len(deps) > 0
activated_cfg = activated_cfg.split(';')
for cfg in activated_cfg:
cfg = cfg.strip()
key, value = parse_key_value(cfg)
if key not in dot_emscripten:
debug_print(str(self) + ' is not active, because key="' + key + '" does not exist in .emscripten')
return False
dot_emscripten_key = dot_emscripten[key]
if dot_emscripten_key != value:
debug_print(str(self) + ' is not active, because key="' + key + '" has value "' + dot_emscripten_key + '" but should have value "' + value + '"')
return False
return True
# Returns true if the system environment variables requires by this tool are currently active.
def is_env_active(self):
envs = self.activated_environment()
for env in envs:
key, value = parse_key_value(env)
if key not in os.environ or to_unix_path(os.environ[key]) != to_unix_path(value):
debug_print(str(self) + ' is not active, because environment variable key="' + key + '" has value "' + str(os.getenv(key)) + '" but should have value "' + value + '"')
return False
if hasattr(self, 'activated_path'):
path = self.expand_vars(self.activated_path).replace('\\', '/')
path = path.split(ENVPATH_SEPARATOR)
for p in path:
path_items = os.environ['PATH'].replace('\\', '/').split(ENVPATH_SEPARATOR)
if not normalized_contains(path_items, p):
debug_print(str(self) + ' is not active, because environment variable PATH item "' + p + '" is not present (PATH=' + os.environ['PATH'] + ')')
return False
return True
def win_activate_env_vars(self, permanently_activate):
envs = self.activated_environment()
for env in envs:
key, value = parse_key_value(env)
if permanently_activate:
# If there is an env var for the LOCAL USER with same name, it will
# hide the system var, so must remove that first.
win_delete_environment_variable(key, False)
win_set_environment_variable(key, value, permanently_activate)
# If this tool can be installed on this system, this function returns True.
# Otherwise, this function returns a string that describes the reason why this
# tool is not available.
def can_be_installed(self):
if hasattr(self, 'bitness'):
if self.bitness == 64 and not is_os_64bit():
return "this tool is only provided for 64-bit OSes"
if == 'vs-tool':
msbuild_dir = find_msbuild_dir()
if len(msbuild_dir) > 0:
return True
return "Visual Studio 2010 was not found"
return True
def download_url(self):
if WINDOWS and hasattr(self, 'windows_url'):
return self.windows_url
elif OSX and hasattr(self, 'osx_url'):
return self.osx_url
elif LINUX and hasattr(self, 'linux_url'):
return self.linux_url
elif UNIX and hasattr(self, 'unix_url'):
return self.unix_url
elif hasattr(self, 'url'):
return self.url
return None
def install(self):
if self.can_be_installed() is not True:
print("The tool '" + str(self) + "' is not available due to the reason: " + self.can_be_installed())
return False
if == 'sdk':
print("Installing SDK '" + str(self) + "'..")
for tool_name in self.uses:
tool = find_tool(tool_name)
if tool is None:
print("Manifest error: No tool by name '" + tool_name + "' found! This may indicate an internal SDK error!")
success = tool.install()
if not success:
return False
print("Done installing SDK '" + str(self) + "'.")
return True
print("Installing tool '" + str(self) + "'..")
url = self.download_url()
if hasattr(self, 'custom_install_script') and self.custom_install_script == 'build_fastcomp':
success = build_llvm_tool(self)
elif hasattr(self, 'git_branch'):
success = git_clone_checkout_and_pull(url, self.installation_path(), self.git_branch)
elif url.endswith(ARCHIVE_SUFFIXES):
# TODO: explain the vs-tool special-casing
download_even_if_exists = ( == 'vs-tool')
# if we are downloading a zip, we will unpack and delete it after immediately anyhow,
# so there is no need to look for an existing one (which may have been left behind
# due to an error in the past)
if url.endswith(ARCHIVE_SUFFIXES):
download_even_if_exists = True
filename_prefix = getattr(self, 'zipfile_prefix', '')
success = download_and_unzip(url, self.installation_path(), download_even_if_exists=download_even_if_exists, filename_prefix=filename_prefix)
dst_file = download_file(urljoin(emsdk_packages_url, self.download_url()), self.installation_path())
if dst_file:
success = True
success = False
if success:
if hasattr(self, 'custom_install_script'):
if self.custom_install_script == 'build_optimizer':
success = build_optimizer_tool(self)
elif self.custom_install_script == 'build_fastcomp':
# 'build_fastcomp' is a special one that does the download on its
# own, others do the download manually.
elif self.custom_install_script == 'build_binaryen':
success = build_binaryen_tool(self)
raise Exception('Unknown custom_install_script command "' + self.custom_install_script + '"!')
# Install an emscripten-version.txt file if told to, and if there is one.
# (If this is not an actual release, but some other build, then we do not
# write anything.)
if hasattr(self, 'emscripten_releases_hash'):
emscripten_version_file_path = os.path.join(to_native_path(self.expand_vars(self.activated_path)), 'emscripten-version.txt')
version = get_emscripten_release_version(self.emscripten_releases_hash)
if version:
open(emscripten_version_file_path, 'w').write('"%s"' % version)
if not success:
print("Installation failed!")
return False
print("Done installing tool '" + str(self) + "'.")
# Sanity check that the installation succeeded, and if so, remove unneeded
# leftover installation files.
if self.is_installed():
print("Warning: The installation of '" + str(self) + "' seems to have failed, but no error was detected. Either something went wrong with the installation, or this may indicate an internal emsdk error.")
return True
def cleanup_temp_install_files(self):
url = self.download_url()
if url.endswith(ARCHIVE_SUFFIXES):
download_target = get_download_target(url, zips_subdir, getattr(self, 'zipfile_prefix', ''))
debug_print("Deleting temporary zip file " + download_target)
def uninstall(self):
if not self.is_installed():
print("Tool '" + str(self) + "' was not installed. No need to uninstall.")
print("Uninstalling tool '" + str(self) + "'..")
if hasattr(self, 'custom_uninstall_script'):
if self.custom_uninstall_script == 'uninstall_optimizer':
elif self.custom_uninstall_script == 'uninstall_binaryen':
raise Exception('Unknown custom_uninstall_script directive "' + self.custom_uninstall_script + '"!')
print("Deleting path '" + self.installation_path() + "'")
print("Done uninstalling '" + str(self) + "'.")
def dependencies(self):
if not hasattr(self, 'uses'):
return []
deps = []
for tool_name in self.uses:
tool = find_tool(tool_name)
if tool:
deps += [tool]
return deps
def recursive_dependencies(self):
if not hasattr(self, 'uses'):
return []
deps = []
for tool_name in self.uses:
tool = find_tool(tool_name)
if tool:
deps += [tool]
deps += tool.recursive_dependencies()
return deps
# A global registry of all known Emscripten SDK tools available in the SDK manifest.
tools = []
tools_map = {}
def add_tool(tool):
tool.is_sdk = False
if find_tool(str(tool)):
raise Exception('Duplicate tool ' + str(tool) + '! Existing:\n{' + ', '.join("%s: %s" % item for item in vars(find_tool(str(tool))).items()) + '}, New:\n{' + ', '.join("%s: %s" % item for item in vars(tool).items()) + '}')
tools_map[str(tool)] = tool
# A global registry of all known SDK toolsets.
sdks = []
sdks_map = {}
def add_sdk(sdk):
sdk.is_sdk = True
if find_sdk(str(sdk)):
raise Exception('Duplicate sdk ' + str(sdk) + '! Existing:\n{' + ', '.join("%s: %s" % item for item in vars(find_sdk(str(sdk))).items()) + '}, New:\n{' + ', '.join("%s: %s" % item for item in vars(sdk).items()) + '}')
sdks_map[str(sdk)] = sdk
# N.B. In both tools and sdks list above, we take the convention that the newest
# items are at the back of the list (ascending chronological order)
def find_tool(name):
return tools_map.get(name)
def find_sdk(name):
return sdks_map.get(name)
def is_os_64bit():
return platform.machine().endswith('64')
def find_latest_releases_version():
releases_info = load_releases_info()
return releases_info['latest']
def find_latest_releases_hash():
releases_info = load_releases_info()
return releases_info['releases'][find_latest_releases_version()]
def find_latest_releases_sdk(which):
return 'sdk-releases-%s-%s-64bit' % (which, find_latest_releases_hash())
def find_tot_sdk(which):
if not os.path.exists(tot_path()):
print('Tip-of-tree information was not found, run emsdk update-tags')
tot = open(tot_path()).read()
if not tot:
print('Tip-of-tree build was not found, run emsdk update-tags (however, if there is no recent tip-of-tree build, you may need to wait)')
return 'sdk-releases-%s-%s-64bit' % (which, tot)
# Given a git hash in emscripten-releases, find the emscripten
# version for it. There may not be one if this is not the hash of
# a release, in which case we return None.
def get_emscripten_release_version(emscripten_releases_hash):
releases_info = load_releases_info()
for key, value in dict(releases_info['releases']).items():
if value == emscripten_releases_hash:
return key
return None
def tot_path():
return sdk_path('emscripten-releases-tot.txt')
# Get the tip-of-tree build identifier.
def get_emscripten_releases_tot():
git_clone_checkout_and_pull(emscripten_releases_repo, sdk_path('releases'), 'master')
recent_releases = git_recent_commits(sdk_path('releases'))
# The recent releases are the latest hashes in the git repo. There
# may not be a build for the most recent ones yet; find the last
# that does.
for release in recent_releases:
url = emscripten_releases_download_url_template % (
'tbz2' if not WINDOWS else 'zip'
return release
return ''
# Finds the best-matching python tool for use.
def find_used_python():
# Find newest tool first - those are always at the end of the list.
for t in reversed(tools):
if == 'python' and t.is_installed() and t.is_active() and t.is_env_active():
return t
for t in reversed(tools):
if == 'python' and t.is_installed() and t.is_active():
return t
for t in reversed(tools):
if == 'python' and t.is_installed():
return t
return None
def version_key(ver):
return list(map(int, re.split('[._-]', ver)))
# A sort function that is compatible with both Python 2 and Python 3 using a
# custom comparison function.
def python_2_3_sorted(arr, cmp):
if sys.version_info >= (3,):
return sorted(arr, key=functools.cmp_to_key(cmp))
return sorted(arr, cmp=cmp)
def fetch_emscripten_tags():
git = GIT(must_succeed=False)
if git:
print('Fetching emscripten-releases repository...')
emscripten_releases_tot = get_emscripten_releases_tot()
if emscripten_releases_tot:
open(tot_path(), 'w').write(emscripten_releases_tot)
print('Update complete, however skipped fetching the Emscripten tags, since git was not found, which is necessary for update-tags.')
print("Please install git by typing 'emsdk install git-1.9.4', or alternatively by installing it manually from . If you install git manually, remember to add it to PATH.")
elif OSX:
print("Please install git from , or by installing XCode and then the XCode Command Line Tools (see ).")
elif LINUX:
print("Pease install git using your package manager, see .")
print("Please install git.")
def is_emsdk_sourced_from_github():
return os.path.exists(os.path.join(emsdk_path(), '.git'))
def update_emsdk():
if is_emsdk_sourced_from_github():
print('You seem to have bootstrapped Emscripten SDK by cloning from GitHub. In this case, use "git pull" instead of "emsdk update" to update emsdk. (Not doing that automatically in case you have local changes)', file=sys.stderr)
print('Alternatively, use "emsdk update-tags" to refresh the latest list of tags from the different Git repositories.', file=sys.stderr)
if not download_and_unzip(emsdk_zip_download_url, emsdk_path(), download_even_if_exists=True):
# Lists all legacy (pre-emscripten-releases) tagged versions directly in the Git
# repositories. These we can pull and compile from source.
def load_legacy_emscripten_tags():
return open(sdk_path('legacy-emscripten-tags.txt'), 'r').read().split('\n')
return []
def load_legacy_binaryen_tags():
return open(sdk_path('legacy-binaryen-tags.txt'), 'r').read().split('\n')
return []
def remove_prefix(s, prefix):
if s.startswith(prefix):
return s[len(prefix):]
return s
def remove_suffix(s, suffix):
if s.endswith(suffix):
return s[:len(s) - len(suffix)]
return s
# filename should be one of: 'llvm-nightlies-32bit.txt', 'llvm-nightlies-64bit.txt', 'llvm-precompiled-tags-32bit.txt', 'llvm-precompiled-tags-64bit.txt', 'emscripten-nightlies.txt'
def load_file_index_list(filename):
items = open(sdk_path(filename), 'r').read().split('\n')
items = map(lambda x: remove_suffix(remove_suffix(remove_prefix(remove_prefix(x, 'emscripten-llvm-e'), 'emscripten-nightly-'), '.tar.gz'), '.zip').strip(), items)
items = filter(lambda x: 'latest' not in x and len(x) > 0, items)
# Sort versions from oldest to newest (the default sort would be lexicographic, i.e. '1.37.1 < 1.37.10 < 1.37.2')
items = sorted(items, key=version_key)[::-1]
return items
return []
def load_llvm_32bit_nightlies():
return load_file_index_list('llvm-nightlies-32bit.txt')
def load_llvm_64bit_nightlies():
return load_file_index_list('llvm-nightlies-64bit.txt')
def load_emscripten_nightlies():
return load_file_index_list('emscripten-nightlies.txt')
def load_llvm_precompiled_tags_32bit():
return load_file_index_list('llvm-tags-32bit.txt')
def load_llvm_precompiled_tags_64bit():
return load_file_index_list('llvm-tags-64bit.txt')
def exit_with_error(msg):
sys.stdout.write(str(msg) + '\n')
# Load the json info for emscripten-releases.
def load_releases_info():
text = open(sdk_path('emscripten-releases-tags.txt'), 'r').read()
return json.loads(text)
except Exception as e:
print('Error parsing emscripten-releases-tags.txt!')
# Get a list of tags for emscripten-releases.
def load_releases_tags():
info = load_releases_info()
tags = list(info['releases'].values())
# Add the tip-of-tree, if it exists.
if os.path.exists(tot_path()):
tot = open(tot_path()).read()
if tot:
return tags
def load_releases_versions():
info = load_releases_info()
versions = list(info['releases'].keys())
return versions
def is_string(s):
if sys.version_info[0] >= 3:
return isinstance(s, str)
return isinstance(s, basestring) # noqa
def load_sdk_manifest():
global tools, sdks
manifest = json.loads(open(sdk_path("emsdk_manifest.json"), "r").read())
except Exception as e:
print('Error parsing emsdk_manifest.json!')
emscripten_tags = load_legacy_emscripten_tags()
llvm_precompiled_tags_32bit = list(reversed(load_llvm_precompiled_tags_32bit()))
llvm_precompiled_tags_64bit = list(reversed(load_llvm_precompiled_tags_64bit()))
llvm_precompiled_tags = llvm_precompiled_tags_32bit + llvm_precompiled_tags_64bit
binaryen_tags = load_legacy_binaryen_tags()
llvm_32bit_nightlies = list(reversed(load_llvm_32bit_nightlies()))
llvm_64bit_nightlies = list(reversed(load_llvm_64bit_nightlies()))
emscripten_nightlies = list(reversed(load_emscripten_nightlies()))
releases_tags = load_releases_tags()
def dependencies_exist(sdk):
for tool_name in sdk.uses:
tool = find_tool(tool_name)
if not tool:
return False
return True
def cmp_version(ver, cmp_operand, reference):
if cmp_operand == '<=':
return version_key(ver) <= version_key(reference)
if cmp_operand == '<':
return version_key(ver) < version_key(reference)
if cmp_operand == '>=':
return version_key(ver) >= version_key(reference)
if cmp_operand == '>':
return version_key(ver) > version_key(reference)
if cmp_operand == '==':
return version_key(ver) == version_key(reference)
if cmp_operand == '!=':
return version_key(ver) != version_key(reference)
raise Exception('Invalid cmp_operand "' + cmp_operand + '"!')
def passes_filters(param, ver, filters):
for v in filters:
if v[0] == param and not cmp_version(ver, v[1], v[2]):
return False
return True
# A 'category parameter' is a %foo%-encoded identifier that specifies
# a class of tools instead of just one tool, e.g. %tag% or %nightly..%
def expand_category_param(param, category_list, t, is_sdk):
for i, ver in enumerate(category_list):
if not ver.strip():
t2 = copy.copy(t)
found_param = False
for p, v in vars(t2).items():
if is_string(v) and param in v:
t2.__dict__[p] = v.replace(param, ver)
found_param = True
if not found_param:
t2.is_old = i < len(category_list) - 2
if hasattr(t2, 'uses'):
t2.uses = [x.replace(param, ver) for x in t2.uses]
# Filter out expanded tools by version requirements, such as ["tag", "<=", "1.37.22"]
if hasattr(t2, 'version_filter'):
passes = passes_filters(param, ver, t2.version_filter)
if not passes:
if is_sdk:
if dependencies_exist(t2):
if not find_sdk(
debug_print('SDK ' + str(t2) + ' already existed in manifest, not adding twice')
if not find_tool(
debug_print('Tool ' + str(t2) + ' already existed in manifest, not adding twice')
for tool in manifest['tools']:
t = Tool(tool)
if t.compatible_with_this_os():
if not hasattr(t, 'is_old'):
t.is_old = False
# Expand the metapackages that refer to tags or nightlies.
if '%tag%' in t.version:
expand_category_param('%tag%', emscripten_tags, t, is_sdk=False)
elif '%precompiled_tag%' in t.version:
expand_category_param('%precompiled_tag%', llvm_precompiled_tags, t, is_sdk=False)
elif '%precompiled_tag32%' in t.version:
expand_category_param('%precompiled_tag32%', llvm_precompiled_tags_32bit, t, is_sdk=False)
elif '%precompiled_tag64%' in t.version:
expand_category_param('%precompiled_tag64%', llvm_precompiled_tags_64bit, t, is_sdk=False)
elif '%binaryen_tag%' in t.version:
expand_category_param('%binaryen_tag%', binaryen_tags, t, is_sdk=False)
elif '%nightly-llvm-64bit%' in t.version:
expand_category_param('%nightly-llvm-64bit%', llvm_64bit_nightlies, t, is_sdk=False)
elif '%nightly-llvm-32bit%' in t.version:
expand_category_param('%nightly-llvm-32bit%', llvm_32bit_nightlies, t, is_sdk=False)
elif '%nightly-emscripten%' in t.version:
expand_category_param('%nightly-emscripten%', emscripten_nightlies, t, is_sdk=False)
elif '%releases-tag%' in t.version:
expand_category_param('%releases-tag%', releases_tags, t, is_sdk=False)
for sdk_str in manifest['sdks']:
sdk_str['id'] = 'sdk'
sdk = Tool(sdk_str)
if sdk.compatible_with_this_os():
if not hasattr(sdk, 'is_old'):
sdk.is_old = False
if '%tag%' in sdk.version:
expand_category_param('%tag%', emscripten_tags, sdk, is_sdk=True)
elif '%precompiled_tag%' in sdk.version:
expand_category_param('%precompiled_tag%', llvm_precompiled_tags, sdk, is_sdk=True)
elif '%precompiled_tag32%' in sdk.version:
expand_category_param('%precompiled_tag32%', llvm_precompiled_tags_32bit, sdk, is_sdk=True)
elif '%precompiled_tag64%' in sdk.version:
expand_category_param('%precompiled_tag64%', llvm_precompiled_tags_64bit, sdk, is_sdk=True)
elif '%nightly-llvm-64bit%' in sdk.version:
expand_category_param('%nightly-llvm-64bit%', llvm_64bit_nightlies, sdk, is_sdk=True)
elif '%nightly-llvm-32bit%' in sdk.version:
expand_category_param('%nightly-llvm-32bit%', llvm_32bit_nightlies, sdk, is_sdk=True)
elif '%nightly-emscripten%' in sdk.version:
expand_category_param('%nightly-emscripten%', emscripten_nightlies, sdk, is_sdk=True)
elif '%releases-tag%' in sdk.version:
expand_category_param('%releases-tag%', releases_tags, sdk, is_sdk=True)
# Tests if the two given tools can be active at the same time.
# Currently only a simple check for name for same tool with different versions,
# possibly adds more logic in the future.
def can_simultaneously_activate(tool1, tool2):
return !=
def remove_nonexisting_tools(tool_list, log_errors=True):
i = 0
while i < len(tool_list):
tool = tool_list[i]
if not tool.is_installed():
if log_errors:
print("Warning: The SDK/tool '" + str(tool) + "' cannot be activated since it is not installed! Skipping this tool...")
i += 1
return tool_list
# Expands dependencies for each tool, and removes ones that don't exist.
def process_tool_list(tools_to_activate, log_errors=True):
i = 0
# Gather dependencies for each tool
while i < len(tools_to_activate):
tool = tools_to_activate[i]
deps = tool.recursive_dependencies()
tools_to_activate = tools_to_activate[:i] + deps + tools_to_activate[i:]
i += len(deps) + 1
tools_to_activate = remove_nonexisting_tools(tools_to_activate, log_errors=log_errors)
# Remove conflicting tools
i = 0
while i < len(tools_to_activate):
j = 0
while j < i:
secondary_tool = tools_to_activate[j]
primary_tool = tools_to_activate[i]
if not can_simultaneously_activate(primary_tool, secondary_tool):
j -= 1
i -= 1
j += 1
i += 1
return tools_to_activate
def run_emcc(tools_to_activate):
for tool in tools_to_activate:
activated_path = getattr(tool, 'activated_path', None)
if activated_path and activated_path.endswith('/emscripten'):
activated_path = to_native_path(tool.expand_vars(tool.activated_path))
emcc_path = os.path.join(activated_path, '')
if os.path.exists(emcc_path):
debug_print('Calling emcc to initialize it')[sys.executable, emcc_path], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
# Copy over any emscripten cache contents that were pregenerated. This avoids
# the user needing to immediately build libc etc. on first run.
def copy_pregenerated_cache(tools_to_activate):
cache_dir = os.path.join(emscripten_config_directory, ".emscripten_cache")
for tool in tools_to_activate:
pregenerated_cache = getattr(tool, 'pregenerated_cache', None)
if pregenerated_cache:
# Finish the install of an emscripten-releases build.
install_path = to_native_path(sdk_path(tool.expand_vars(tool.install_path)))
in_cache = os.path.join(install_path, 'lib', pregenerated_cache)
if os.path.exists(in_cache):
out_cache = os.path.join(cache_dir, pregenerated_cache)
for filename in os.listdir(in_cache):
debug_print('Copying ' + filename + ' to cache dir')
shutil.copy2(os.path.join(in_cache, filename),
os.path.join(out_cache, filename))
# Reconfigure .emscripten to choose the currently activated toolset, set PATH
# and other environment variables.
# Returns the full list of deduced tools that are now active.
def set_active_tools(tools_to_activate, permanently_activate):
tools_to_activate = process_tool_list(tools_to_activate, log_errors=True)
# Generating .emscripten will cause emcc to clear the cache on first run (emcc
# sees that the file has changed, since we write it here in the emsdk, and it
# never saw it before; so it clears the cache as it assumes a new config file
# means system libraries may need rebuilding). To avoid emcc's clearing wiping
# out the pregenerated cache contents we want to copy in, run emcc here, then
# copy the cache contents.
# Construct a .bat script that will be invoked to set env. vars and PATH
env_string = construct_env(tools_to_activate, False)
open(EMSDK_SET_ENV, 'w').write(env_string)
# Apply environment variables to global all users section.
if WINDOWS and permanently_activate:
# Individual env. vars
for tool in tools_to_activate:
# PATH variable
newpath, added_items = adjusted_path(tools_to_activate, system_path_only=True)
# Are there any actual changes?
if newpath != os.environ['PATH']:
win_set_environment_variable('PATH', newpath, system=True)
if len(tools_to_activate) > 0:
tools = [x for x in tools_to_activate if not x.is_sdk]
print('\nSet the following tools as active:\n ' + '\n '.join(map(lambda x: str(x), tools)))
return tools_to_activate
def currently_active_sdk():
for sdk in reversed(sdks):
if sdk.is_active():
return sdk
return None
def currently_active_tools():
active_tools = []
for tool in tools:
if tool.is_active():
active_tools += [tool]
return active_tools
def unique_items(seq):
seen = set()
seen_add = seen.add
return [x for x in seq if x not in seen and not seen_add(x)]
# Tests if a path is contained in the given list, but with separators normalized.
def normalized_contains(lst, elem):
elem = to_unix_path(elem)
for e in lst:
if elem == to_unix_path(e):
return True
return False
def to_msys_path(p):
p = to_unix_path(p)
new_path = re.sub(r'([a-zA-Z]):/(.*)', r'/\1/\2', p)
if len(new_path) > 3 and new_path[0] == '/' and new_path[2] == '/':
new_path = new_path[0] + new_path[1].lower() + new_path[2:]
return new_path
# Looks at the current PATH and adds and removes entries so that the PATH reflects
# the set of given active tools.
def adjusted_path(tools_to_activate, log_additions=False, system_path_only=False):
# These directories should be added to PATH
path_add = get_required_path(tools_to_activate)
# These already exist.
if WINDOWS and not MSYS:
existing_path = win_get_environment_variable('PATH', system=True)
if not system_path_only:
current_user_path = win_get_environment_variable('PATH', system=False)
if current_user_path:
existing_path += ENVPATH_SEPARATOR + current_user_path
existing_path = existing_path.split(ENVPATH_SEPARATOR)
# Fix up after potential changes made by bug
system_root = os.environ['SystemRoot'].lower()
for i in range(len(existing_path)):
p = existing_path[i]
if p.lower() == system_root:
p = '%SystemRoot%'
elif (system_root + '\\system32') in p.lower():
p = '%SystemRoot%\\system32'
elif (system_root + '\\system32\\wbem') in p.lower():
p = '%SystemRoot%\\System32\\Wbem'
elif (system_root + '\\system32\\windowspowershell\v1.0') in p.lower():
p = '%SystemRoot%\\System32\\WindowsPowerShell\v1.0\\'
existing_path[i] = p
existing_path = os.environ['PATH'].split(ENVPATH_SEPARATOR)
emsdk_root_path = to_unix_path(emsdk_path())
existing_emsdk_tools = [item for item in existing_path if to_unix_path(item).startswith(emsdk_root_path)]
new_emsdk_tools = [item for item in path_add if not normalized_contains(existing_emsdk_tools, item)]
# Existing non-emsdk tools
existing_path = [item for item in existing_path if not to_unix_path(item).startswith(emsdk_root_path)]
new_path = [item for item in path_add if not normalized_contains(existing_path, item)]
whole_path = unique_items(new_path + existing_path)
if MSYS:
# XXX Hack: If running native Windows Python in MSYS prompt where PATH
# entries look like "/c/Windows/System32", os.environ['PATH']
# in Python will transform to show them as "C:\\Windows\\System32", so need
# to reconvert path delimiter back to forward slashes.
whole_path = list(map(to_msys_path, whole_path))
new_emsdk_tools = list(map(to_msys_path, new_emsdk_tools))
return ((':' if MSYS else ENVPATH_SEPARATOR).join(whole_path), new_emsdk_tools)
def construct_env(tools_to_activate, permanent):
env_string = ''
newpath, added_path = adjusted_path(tools_to_activate)
# Dont permanently add to PATH, since this will break the whole system if there
# are more than 1024 chars in PATH.
# (SETX truncates to set only 1024 chars)
# if permanent:
# print('SETX PATH "' + newpath + '"')
# else:
# Don't bother setting the path if there are no changes.
if os.environ['PATH'] != newpath:
env_string += '$env:PATH="' + newpath + '"\n'
elif WINDOWS and not MSYS:
env_string += 'SET PATH=' + newpath + '\n'
env_string += 'export PATH="' + newpath + '"\n'
if len(added_path) > 0:
print('Adding directories to PATH:')
for item in added_path:
print('PATH += ' + item)
env_vars_to_add = []
# A core variable EMSDK points to the root of Emscripten SDK directory.
env_vars_to_add += [('EMSDK', to_unix_path(emsdk_path()))]
em_config_path = os.path.normpath(dot_emscripten_path())
if to_unix_path(os.environ.get('EM_CONFIG', '')) != to_unix_path(em_config_path):
env_vars_to_add += [('EM_CONFIG', em_config_path)]
if emscripten_config_directory == emsdk_path():
em_cache_dir = sdk_path('.emscripten_cache')
if to_unix_path(os.environ.get('EM_CACHE', '')) != to_unix_path(em_cache_dir):
env_vars_to_add += [('EM_CACHE', em_cache_dir)]
for tool in tools_to_activate:
envs = tool.activated_environment()
for env in envs:
key, value = parse_key_value(env)
value = to_native_path(tool.expand_vars(value))
# Don't set env vars which are already set to the correct value.
if key not in os.environ or to_unix_path(os.environ[key]) != to_unix_path(value):
env_vars_to_add += [(key, value)]
if len(env_vars_to_add) > 0:
print('Setting environment variables:')
for key, value in env_vars_to_add:
env_string += '$env:' + key + '="' + value + '"\n'
elif WINDOWS and not MSYS:
if permanent:
env_string += 'SETX ' + key + ' "' + value + '"\n'
env_string += 'SET ' + key + '=' + value + '\n'
env_string += 'export ' + key + '="' + value + '"\n'
print(key + ' = ' + value)
return env_string
def silentremove(filename):
except OSError as e:
if e.errno != errno.ENOENT:
def main():
if len(sys.argv) <= 1 or sys.argv[1] == 'help' or sys.argv[1] == '--help':
if len(sys.argv) <= 1:
print(' emsdk: No command given. Please call one of the following:')
print(' emsdk: Available commands:')
emsdk list [--old] [--uses] - Lists all available SDKs and tools and their
current installation status. With the --old
parameter, also historical versions are
shown. If --uses is passed, displays the
composition of different SDK packages and
emsdk update - Updates emsdk to the newest version, and also
runs 'update-tags' (below). If you have
bootstrapped emsdk via cloning directly from
GitHub, call "git pull" instead to update emsdk.
emsdk update-tags - Fetches the most up to date list of available
Emscripten tagged and other releases from the
emsdk install [options] <tool 1> <tool 2> <tool 3> ...
- Downloads and installs given tools or SDKs.
Options can contain:
-j<num>: Specifies the number of cores to use when
building the tool. Default: use one less
than the # of detected cores.
--build=<type>: Controls what kind of build of LLVM to
perform. Pass either 'Debug', 'Release',
'MinSizeRel' or 'RelWithDebInfo'. Default:
'Release' for LLVM master branch, and
'RelWithDebInfo' for LLVM incoming branch.
--generator=<type>: Specifies the CMake Generator to be used
during the build. Possible values are the
same as what your CMake supports and whether
the generator is valid depends on the tools
you have installed. Defaults to 'Unix Makefiles'
on *nix systems. If generator name is multiple
words, enclose with single or double quotes.
--shallow: When installing tools from one of the git
development branches 'master' or 'incoming',
this parameter can be passed to perform a
shallow git clone instead of a full one.
This reduces the amount of network transfer
that is needed. This option should only be
used when you are interested in downloading
one of the development branches, but are not
looking to develop Emscripten yourself.
Default: disabled, i.e. do a full clone.
--build-tests: If enabled, LLVM is built with internal tests
included. Pass this to enable running test
other.test_llvm_lit in the Emscripten test
suite. Default: disabled.
--enable-assertions: If specified, LLVM is built with assert()
checks enabled. Useful for development
purposes. Default: Enabled for 'incoming'
branch, disabled for 'master' branch.
--disable-assertions: Forces assertions off during the build.
--vs2013/--vs2015/--vs2017: If building from source, overrides to build
using the specified compiler. When installing
precompiled packages, this has no effect.
Note: The same compiler specifier must be
passed to the emsdk activate command to
activate the desired version.
Notes on building from source:
To pass custom CMake directives when configuring
LLVM build, specify the environment variable
in the environment where the build is invoked.
See for details.
emsdk uninstall <tool/sdk> - Removes the given tool or SDK from disk.''')
emsdk activate [--global] [--build=type] [--vs2013/--vs2015/--vs2017] <tool/sdk>
- Activates the given tool or SDK in the
environment of the current shell. If the
--global option is passed, the registration
is done globally to all users in the system
If a custom compiler version was used to
override the compiler to use, pass the same
--vs2013/--vs2015/--vs2017 parameter here to
choose which version to activate.
emcmdprompt.bat - Spawns a new command prompt window with the
Emscripten environment active.''')
print(''' emsdk activate [--build=type] <tool/sdk>
- Activates the given tool or SDK in the
environment of the current shell.''')
Both commands 'install' and 'activate' accept an optional parameter
'--build=type', which can be used to override what kind of installation
or activation to perform. Possible values for type are Debug, Release,
MinSizeRel or RelWithDebInfo. Note: When overriding a custom build type,
be sure to match the same --build= option to both 'install' and
'activate' commands and the invocation of 'emsdk_env', or otherwise
these commands will default to operating on the default build types,
which are Release for the 'master' SDK, and RelWithDebInfo for the
'incoming' SDK.''')
return 1
# Extracts a boolean command line argument from sys.argv and returns True if it was present
def extract_bool_arg(name):
old_argv = sys.argv
sys.argv = list(filter(lambda a: a != name, sys.argv))
return len(sys.argv) != len(old_argv)
arg_old = extract_bool_arg('--old')
arg_uses = extract_bool_arg('--uses')
arg_global = extract_bool_arg('--global')
arg_notty = extract_bool_arg('--notty')
if arg_notty:
cmd = sys.argv[1]
# On first run when tag list is not present, populate it to bootstrap.
if (cmd == 'install' or cmd == 'list') and not os.path.isfile(sdk_path('llvm-tags-64bit.txt')):
global emscripten_config_directory
active_config = os.path.join(emsdk_path(), '.active_config')
if os.path.exists(active_config):
with open(active_config) as f:
emscripten_config_directory = os.path.dirname(
emscripten_config_directory = os.path.expanduser("~/")
# Process global args
for i in range(2, len(sys.argv)):
if sys.argv[i].startswith('--generator='):
build_generator = re.match(r'''^--generator=['"]?([^'"]+)['"]?$''', sys.argv[i])
if build_generator:
sys.argv[i] = ''
print("Cannot parse CMake generator string: " + sys.argv[i] + ". Try wrapping generator string with quotes", file=sys.stderr)
return 1
elif sys.argv[i].startswith('--build='):
build_type = re.match(r'^--build=(.+)$', sys.argv[i])
if build_type:
build_type =
build_types = ['Debug', 'MinSizeRel', 'RelWithDebInfo', 'Release']
build_type_index = [x.lower() for x in build_types].index(build_type.lower())
CMAKE_BUILD_TYPE_OVERRIDE = build_types[build_type_index]
sys.argv[i] = ''
print('Unknown CMake build type "' + build_type + '" specified! Please specify one of ' + str(build_types), file=sys.stderr)
return 1
print("Invalid command line parameter " + sys.argv[i] + ' specified!', file=sys.stderr)
return 1
sys.argv = [x for x in sys.argv if not len(x) == 0]
releases_info = load_releases_info()['releases']
# Replace meta-packages with the real package names.
if cmd in ('update', 'install', 'activate'):
for i in range(2, len(sys.argv)):
arg = sys.argv[i]
if arg in ('latest', 'sdk-latest', 'latest-64bit', 'sdk-latest-64bit', 'latest-fastcomp', 'latest-releases-fastcomp'):
sys.argv[i] = str(find_latest_releases_sdk('fastcomp'))
elif arg in ('latest-upstream', 'latest-clang-upstream', 'latest-releases-upstream'):
sys.argv[i] = str(find_latest_releases_sdk('upstream'))
elif arg == 'tot-upstream':
sys.argv[i] = str(find_tot_sdk('upstream'))
elif arg in ('tot-fastcomp', 'sdk-nightly-latest'):
sys.argv[i] = str(find_tot_sdk('fastcomp'))
# check if it's a release handled by an emscripten-releases version,
# and if so use that by using the right hash. we support a few notations,
# x.y.z[-(upstream|fastcomp_])
# sdk-x.y.z[-(upstream|fastcomp_])-64bit
# TODO: support short notation for old builds too?
upstream = False
if '-upstream' in arg:
arg = arg.replace('-upstream', '')
upstream = True
elif '-fastcomp' in arg:
arg = arg.replace('-fastcomp', '')
upstream = False
arg = arg.replace('sdk-', '').replace('-64bit', '').replace('tag-', '')
release_hash = releases_info.get(arg, None) or releases_info.get('sdk-' + arg + '-64bit')
if release_hash:
sys.argv[i] = 'sdk-releases-%s-%s-64bit' % ('upstream' if upstream else 'fastcomp', release_hash)
if cmd == 'list':
if (LINUX or OSX or WINDOWS) and (ARCH == 'x86' or ARCH == 'x86_64'):
print('The *recommended* precompiled SDK download is %s (%s).' % (find_latest_releases_version(), find_latest_releases_hash()))
print('To install/activate it, use one of:')
print(' latest [default (fastcomp) backend]')
print(' latest-upstream [upstream LLVM wasm backend]')
print('Those are equivalent to installing/activating the following:')
print(' %s' % find_latest_releases_version())
print(' %s-upstream' % find_latest_releases_version())
print('Warning: your platform does not have precompiled SDKs available.')
print('You may install components from source.')
print('All recent (non-legacy) installable versions are:')
releases_versions = sorted(load_releases_versions())
for ver in releases_versions:
print(' %s' % ver)
print(' %s-upstream' % ver)
# Use array to work around the lack of being able to mutate from enclosing
# function.
has_partially_active_tools = [False]
if len(sdks) > 0:
def find_sdks(needs_compilation):
s = []
for sdk in sdks:
if sdk.is_old and not arg_old:
if sdk.needs_compilation() == needs_compilation:
s += [sdk]
return s
def print_sdks(s):
for sdk in s:
installed = '\tINSTALLED' if sdk.is_installed() else ''
active = '*' if sdk.is_active() else ' '
print(' ' + active + ' {0: <25}'.format(str(sdk)) + installed)
if arg_uses:
for dep in sdk.uses:
print(' - {0: <25}'.format(dep))
print('The additional following precompiled SDKs are also available for download:')
print('The following SDKs can be compiled from source:')
if len(tools) > 0:
def find_tools(needs_compilation):
t = []
for tool in tools:
if tool.is_old and not arg_old:
if tool.needs_compilation() != needs_compilation:
t += [tool]
return t
def print_tools(t):
for tool in t:
if tool.is_old and not arg_old:
if tool.can_be_installed() is True:
installed = '\tINSTALLED' if tool.is_installed() else ''
installed = '\tNot available: ' + tool.can_be_installed()
tool_is_active = tool.is_active()
tool_is_env_active = tool_is_active and tool.is_env_active()
if tool_is_env_active:
active = ' * '
elif tool_is_active:
active = '(*)'
has_partially_active_tools[0] = has_partially_active_tools[0] or True
active = ' '
print(' ' + active + ' {0: <25}'.format(str(tool)) + installed)
print('The following precompiled tool packages are available for download:')
print('The following tools can be compiled from source:')
if is_emsdk_sourced_from_github():
print("There are no tools available. Run 'git pull' followed by 'emsdk update-tags' to fetch the latest set of tools.")
print("There are no tools available. Run 'emsdk update' to fetch the latest set of tools.")
print('Items marked with * are activated for the current user.')
if has_partially_active_tools[0]:
env_cmd = 'emsdk_env.bat' if WINDOWS else 'source ./'
print('Items marked with (*) are selected for use, but your current shell environment is not configured to use them. Type "' + env_cmd + '" to set up your current shell to use them' + (', or call "emsdk activate --global <name_of_sdk>" to permanently activate them.' if WINDOWS else '.'))
if not arg_old:
print("To access the historical archived versions, type 'emsdk list --old'")
if is_emsdk_sourced_from_github():
print('Run "git pull" followed by "./emsdk update-tags" to pull in the latest list.')
print('Run "./emsdk update" to pull in the latest list.')
return 0
elif cmd == 'construct_env':
if len(sys.argv) == 2:
outfile = EMSDK_SET_ENV
# Clean up old temp file up front, in case of failure later before we get
# to write out the new one.
outfile = sys.argv[2]
tools_to_activate = currently_active_tools()
tools_to_activate = process_tool_list(tools_to_activate, log_errors=True)
env_string = construct_env(tools_to_activate, len(sys.argv) >= 3 and 'perm' in sys.argv[2])
open(outfile, 'w').write(env_string)
if UNIX:
os.chmod(outfile, 0o755)
return 0
elif cmd == 'update':
# Clean up litter after old emsdk update which may have left this temp file
# around.
return 0
elif cmd == 'update-tags':
return 0
elif cmd == 'activate':
if arg_global:
print('Registering active Emscripten environment globally for all users.')
tools_to_activate = currently_active_tools()
args = [x for x in sys.argv[2:] if not x.startswith('--')]
for arg in args:
tool = find_tool(arg)
if tool is None:
tool = find_sdk(arg)
if tool is None:
print("Error: No tool or SDK found by name '" + arg + "'.")
return 1
tools_to_activate += [tool]
if len(tools_to_activate) == 0:
print('No tools/SDKs specified to activate! Usage:\n emsdk activate tool/sdk1 [tool/sdk2] [...]')
return 1
tools_to_activate = set_active_tools(tools_to_activate, permanently_activate=arg_global)
if len(tools_to_activate) == 0:
print('No tools/SDKs found to activate! Usage:\n emsdk activate tool/sdk1 [tool/sdk2] [...]')
return 1
if WINDOWS and not arg_global:
print('The changes made to environment variables only apply to the currently running shell instance. Use the \'emsdk_env.bat\' to re-enter this environment later, or if you\'d like to permanently register this environment globally to all users in Windows Registry, rerun this command with the option --global.')
return 0
elif cmd == 'install':
# Process args
for i in range(2, len(sys.argv)):
if sys.argv[i].startswith('-j'):
multicore = re.match(r'^-j(\d+)$', sys.argv[i])
if multicore:
global CPU_CORES
CPU_CORES = int(
sys.argv[i] = ''
print("Invalid command line parameter " + sys.argv[i] + ' specified!', file=sys.stderr)
return 1
elif sys.argv[i] == '--shallow':
sys.argv[i] = ''
elif sys.argv[i] == '--build-tests':
sys.argv[i] = ''
elif sys.argv[i] == '--enable-assertions':
sys.argv[i] = ''
elif sys.argv[i] == '--disable-assertions':
sys.argv[i] = ''
sys.argv = [x for x in sys.argv if not len(x) == 0]
if len(sys.argv) <= 2:
print("Missing parameter. Type 'emsdk install <tool name>' to install a tool or an SDK. Type 'emsdk list' to obtain a list of available tools. Type 'emsdk install latest' to automatically install the newest version of the SDK.")
return 1
for t in sys.argv[2:]:
tool = find_tool(t)
if tool is None:
tool = find_sdk(t)
if tool is None:
print("Error: No tool or SDK found by name '" + t + "'.")
return 1
success = tool.install()
if not success:
return 1
return 0
elif cmd == 'uninstall':
if len(sys.argv) <= 2:
print("Syntax error. Call 'emsdk uninstall <tool name>'. Call 'emsdk list' to obtain a list of available tools.")
return 1
tool = find_tool(sys.argv[2])
if tool is None:
print("Error: Tool by name '" + sys.argv[2] + "' was not found.")
return 1
return 0
print("Unknown command '" + cmd + "' given! Type 'emsdk help' to get a list of commands.")
return 1
if __name__ == '__main__':