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shared.py
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2284 lines (2002 loc) · 92.8 KB
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from toolchain_profiler import ToolchainProfiler
import shutil, time, os, sys, json, tempfile, copy, shlex, atexit, subprocess, hashlib, cPickle, re, errno
from subprocess import Popen, PIPE, STDOUT
from tempfile import mkstemp
from distutils.spawn import find_executable
import jsrun, cache, tempfiles
import response_file
import logging, platform, multiprocessing
# Temp file utilities
from tempfiles import try_delete
# On Windows python suffers from a particularly nasty bug if python is spawning new processes while python itself is spawned from some other non-console process.
# Use a custom replacement for Popen on Windows to avoid the "WindowsError: [Error 6] The handle is invalid" errors when emcc is driven through cmake or mingw32-make.
# See http://bugs.python.org/issue3905
class WindowsPopen:
def __init__(self, args, bufsize=0, executable=None, stdin=None, stdout=None, stderr=None, preexec_fn=None, close_fds=False,
shell=False, cwd=None, env=None, universal_newlines=False, startupinfo=None, creationflags=0):
self.stdin = stdin
self.stdout = stdout
self.stderr = stderr
# (stdin, stdout, stderr) store what the caller originally wanted to be done with the streams.
# (stdin_, stdout_, stderr_) will store the fixed set of streams that workaround the bug.
self.stdin_ = stdin
self.stdout_ = stdout
self.stderr_ = stderr
# If the caller wants one of these PIPEd, we must PIPE them all to avoid the 'handle is invalid' bug.
if self.stdin_ == PIPE or self.stdout_ == PIPE or self.stderr_ == PIPE:
if self.stdin_ == None:
self.stdin_ = PIPE
if self.stdout_ == None:
self.stdout_ = PIPE
if self.stderr_ == None:
self.stderr_ = PIPE
# emscripten.py supports reading args from a response file instead of cmdline.
# Use .rsp to avoid cmdline length limitations on Windows.
if len(args) >= 2 and args[1].endswith("emscripten.py"):
response_filename = response_file.create_response_file(args[2:], TEMP_DIR)
args = args[0:2] + ['@' + response_filename]
try:
# Call the process with fixed streams.
self.process = subprocess.Popen(args, bufsize, executable, self.stdin_, self.stdout_, self.stderr_, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags)
self.pid = self.process.pid
except Exception, e:
logging.error('\nsubprocess.Popen(args=%s) failed! Exception %s\n' % (' '.join(args), str(e)))
raise e
def communicate(self, input=None):
output = self.process.communicate(input)
self.returncode = self.process.returncode
# If caller never wanted to PIPE stdout or stderr, route the output back to screen to avoid swallowing output.
if self.stdout == None and self.stdout_ == PIPE and len(output[0].strip()) > 0:
print >> sys.stdout, output[0]
if self.stderr == None and self.stderr_ == PIPE and len(output[1].strip()) > 0:
print >> sys.stderr, output[1]
# Return a mock object to the caller. This works as long as all emscripten code immediately .communicate()s the result, and doesn't
# leave the process object around for longer/more exotic uses.
if self.stdout == None and self.stderr == None:
return (None, None)
if self.stdout == None:
return (None, output[1])
if self.stderr == None:
return (output[0], None)
return (output[0], output[1])
def poll(self):
return self.process.poll()
def kill(self):
return self.process.kill()
__rootpath__ = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
def path_from_root(*pathelems):
return os.path.join(__rootpath__, *pathelems)
def add_coloring_to_emit_windows(fn):
def _out_handle(self):
import ctypes
return ctypes.windll.kernel32.GetStdHandle(self.STD_OUTPUT_HANDLE)
out_handle = property(_out_handle)
def _set_color(self, code):
import ctypes
# Constants from the Windows API
self.STD_OUTPUT_HANDLE = -11
hdl = ctypes.windll.kernel32.GetStdHandle(self.STD_OUTPUT_HANDLE)
ctypes.windll.kernel32.SetConsoleTextAttribute(hdl, code)
setattr(logging.StreamHandler, '_set_color', _set_color)
def new(*args):
FOREGROUND_BLUE = 0x0001 # text color contains blue.
FOREGROUND_GREEN = 0x0002 # text color contains green.
FOREGROUND_RED = 0x0004 # text color contains red.
FOREGROUND_INTENSITY = 0x0008 # text color is intensified.
FOREGROUND_WHITE = FOREGROUND_BLUE|FOREGROUND_GREEN |FOREGROUND_RED
# winbase.h
STD_INPUT_HANDLE = -10
STD_OUTPUT_HANDLE = -11
STD_ERROR_HANDLE = -12
# wincon.h
FOREGROUND_BLACK = 0x0000
FOREGROUND_BLUE = 0x0001
FOREGROUND_GREEN = 0x0002
FOREGROUND_CYAN = 0x0003
FOREGROUND_RED = 0x0004
FOREGROUND_MAGENTA = 0x0005
FOREGROUND_YELLOW = 0x0006
FOREGROUND_GREY = 0x0007
FOREGROUND_INTENSITY = 0x0008 # foreground color is intensified.
BACKGROUND_BLACK = 0x0000
BACKGROUND_BLUE = 0x0010
BACKGROUND_GREEN = 0x0020
BACKGROUND_CYAN = 0x0030
BACKGROUND_RED = 0x0040
BACKGROUND_MAGENTA = 0x0050
BACKGROUND_YELLOW = 0x0060
BACKGROUND_GREY = 0x0070
BACKGROUND_INTENSITY = 0x0080 # background color is intensified.
levelno = args[1].levelno
if(levelno >= 50):
color = BACKGROUND_YELLOW | FOREGROUND_RED | FOREGROUND_INTENSITY | BACKGROUND_INTENSITY
elif(levelno >= 40):
color = FOREGROUND_RED | FOREGROUND_INTENSITY
elif(levelno >= 30):
color = FOREGROUND_YELLOW | FOREGROUND_INTENSITY
elif(levelno >= 20):
color = FOREGROUND_GREEN
elif(levelno >= 10):
color = FOREGROUND_MAGENTA
else:
color = FOREGROUND_WHITE
args[0]._set_color(color)
ret = fn(*args)
args[0]._set_color( FOREGROUND_WHITE )
#print "after"
return ret
return new
def add_coloring_to_emit_ansi(fn):
# add methods we need to the class
def new(*args):
levelno = args[1].levelno
if(levelno >= 50):
color = '\x1b[31m' # red
elif(levelno >= 40):
color = '\x1b[31m' # red
elif(levelno >= 30):
color = '\x1b[33m' # yellow
elif(levelno >= 20):
color = '\x1b[32m' # green
elif(levelno >= 10):
color = '\x1b[35m' # pink
else:
color = '\x1b[0m' # normal
args[1].msg = color + args[1].msg + '\x1b[0m' # normal
#print "after"
return fn(*args)
return new
WINDOWS = sys.platform.startswith('win')
OSX = sys.platform == 'darwin'
if sys.stderr.isatty():
if WINDOWS:
logging.StreamHandler.emit = add_coloring_to_emit_windows(logging.StreamHandler.emit)
else:
logging.StreamHandler.emit = add_coloring_to_emit_ansi(logging.StreamHandler.emit)
# Emscripten configuration is done through the --em-config command line option or
# the EM_CONFIG environment variable. If the specified string value contains newline
# or semicolon-separated definitions, then these definitions will be used to configure
# Emscripten. Otherwise, the string is understood to be a path to a settings
# file that contains the required definitions.
try:
EM_CONFIG = sys.argv[sys.argv.index('--em-config')+1]
# And now remove it from sys.argv
skip = False
newargs = []
for arg in sys.argv:
if not skip and arg != '--em-config':
newargs += [arg]
elif arg == '--em-config':
skip = True
elif skip:
skip = False
sys.argv = newargs
# Emscripten compiler spawns other processes, which can reimport shared.py, so make sure that
# those child processes get the same configuration file by setting it to the currently active environment.
os.environ['EM_CONFIG'] = EM_CONFIG
except:
EM_CONFIG = os.environ.get('EM_CONFIG')
if EM_CONFIG and not os.path.isfile(EM_CONFIG):
if EM_CONFIG.startswith('-'):
raise Exception('Passed --em-config without an argument. Usage: --em-config /path/to/.emscripten or --em-config EMSCRIPTEN_ROOT=/path/;LLVM_ROOT=/path;...')
if not '=' in EM_CONFIG:
raise Exception('File ' + EM_CONFIG + ' passed to --em-config does not exist!')
else:
EM_CONFIG = EM_CONFIG.replace(';', '\n') + '\n'
if not EM_CONFIG:
EM_CONFIG = '~/.emscripten'
if '\n' in EM_CONFIG:
CONFIG_FILE = None
logging.debug('EM_CONFIG is specified inline without a file')
else:
CONFIG_FILE = os.path.expanduser(EM_CONFIG)
logging.debug('EM_CONFIG is located in ' + CONFIG_FILE)
if not os.path.exists(CONFIG_FILE):
# Note: repr is used to ensure the paths are escaped correctly on Windows.
# The full string is replaced so that the template stays valid Python.
config_file = open(path_from_root('tools', 'settings_template_readonly.py')).read().split('\n')
config_file = config_file[1:] # remove "this file will be copied..."
config_file = '\n'.join(config_file)
# autodetect some default paths
config_file = config_file.replace('\'{{{ EMSCRIPTEN_ROOT }}}\'', repr(__rootpath__))
llvm_root = os.path.dirname(find_executable('llvm-dis') or '/usr/bin/llvm-dis')
config_file = config_file.replace('\'{{{ LLVM_ROOT }}}\'', repr(llvm_root))
binaryen_root = os.path.dirname(find_executable('asm2wasm') or '/usr/bin/asm2wasm')
config_file = config_file.replace('\'{{{ BINARYEN_ROOT }}}\'', repr(binaryen_root))
node = find_executable('nodejs') or find_executable('node') or 'node'
config_file = config_file.replace('\'{{{ NODE }}}\'', repr(node))
if WINDOWS:
tempdir = os.environ.get('TEMP') or os.environ.get('TMP') or 'c:\\temp'
else:
tempdir = '/tmp'
config_file = config_file.replace('\'{{{ TEMP }}}\'', repr(tempdir))
# write
open(CONFIG_FILE, 'w').write(config_file)
print >> sys.stderr, '''
==============================================================================
Welcome to Emscripten!
This is the first time any of the Emscripten tools has been run.
A settings file has been copied to %s, at absolute path: %s
It contains our best guesses for the important paths, which are:
LLVM_ROOT = %s
NODE_JS = %s
EMSCRIPTEN_ROOT = %s
Please edit the file if any of those are incorrect.
This command will now exit. When you are done editing those paths, re-run it.
==============================================================================
''' % (EM_CONFIG, CONFIG_FILE, llvm_root, node, __rootpath__)
sys.exit(0)
try:
config_text = open(CONFIG_FILE, 'r').read() if CONFIG_FILE else EM_CONFIG
exec(config_text)
except Exception, e:
logging.error('Error in evaluating %s (at %s): %s, text: %s' % (EM_CONFIG, CONFIG_FILE, str(e), config_text))
sys.exit(1)
# Returns a suggestion where current .emscripten config file might be located (if EM_CONFIG env. var is used
# without a file, this hints to "default" location at ~/.emscripten)
def hint_config_file_location():
if CONFIG_FILE: return CONFIG_FILE
else: return '~/.emscripten'
def listify(x):
if type(x) is not list: return [x]
return x
def fix_js_engine(old, new):
global JS_ENGINES
JS_ENGINES = map(lambda x: new if x == old else x, JS_ENGINES)
return new
try:
SPIDERMONKEY_ENGINE = fix_js_engine(SPIDERMONKEY_ENGINE, listify(SPIDERMONKEY_ENGINE))
except:
pass
try:
NODE_JS = fix_js_engine(NODE_JS, listify(NODE_JS))
except:
pass
try:
V8_ENGINE = fix_js_engine(V8_ENGINE, listify(V8_ENGINE))
except:
pass
COMPILER_ENGINE = listify(COMPILER_ENGINE)
JS_ENGINES = [listify(ENGINE) for ENGINE in JS_ENGINES]
try:
EM_POPEN_WORKAROUND
except:
EM_POPEN_WORKAROUND = os.environ.get('EM_POPEN_WORKAROUND')
# Install our replacement Popen handler if we are running on Windows to avoid python spawn process function.
# nb. This is by default disabled since it has the adverse effect of buffering up all logging messages, which makes
# builds look unresponsive (messages are printed only after the whole build finishes). Whether this workaround is needed
# seems to depend on how the host application that invokes emcc has set up its stdout and stderr.
if EM_POPEN_WORKAROUND and os.name == 'nt':
logging.debug('Installing Popen workaround handler to avoid bug http://bugs.python.org/issue3905')
Popen = WindowsPopen
# Verbosity level control for any intermediate subprocess spawns from the compiler. Useful for internal debugging.
# 0: disabled.
# 1: Log stderr of subprocess spawns.
# 2: Log stdout and stderr of subprocess spawns. Print out subprocess commands that were executed.
# 3: Log stdout and stderr, and pass VERBOSE=1 to CMake configure steps.
EM_BUILD_VERBOSE_LEVEL = int(os.getenv('EM_BUILD_VERBOSE')) if os.getenv('EM_BUILD_VERBOSE') != None else 0
# Expectations
EXPECTED_LLVM_VERSION = (3, 9)
actual_clang_version = None
def get_clang_version():
global actual_clang_version
if actual_clang_version is None:
response = Popen([CLANG, '-v'], stderr=PIPE).communicate()[1]
m = re.search(r'[Vv]ersion\s+(\d+\.\d+)', response)
actual_clang_version = m and m.group(1)
return actual_clang_version
def check_clang_version():
expected = '.'.join(map(str, EXPECTED_LLVM_VERSION))
actual = get_clang_version()
if expected in actual:
return True
logging.warning('LLVM version appears incorrect (seeing "%s", expected "%s")' % (actual, expected))
return False
def check_llvm_version():
try:
check_clang_version()
except Exception, e:
logging.critical('Could not verify LLVM version: %s' % str(e))
# look for emscripten-version.txt files under or alongside the llvm source dir
def get_fastcomp_src_dir():
d = LLVM_ROOT
emroot = path_from_root() # already abspath
# look for version file in llvm repo, making sure not to mistake the emscripten repo for it
while d != os.path.dirname(d):
d = os.path.abspath(d)
# when the build directory lives below the source directory
if os.path.exists(os.path.join(d, 'emscripten-version.txt')) and not d == emroot:
return d
# when the build directory lives alongside the source directory
elif os.path.exists(os.path.join(d, 'src', 'emscripten-version.txt')) and not os.path.join(d, 'src') == emroot:
return os.path.join(d, 'src')
else:
d = os.path.dirname(d)
return None
def get_llc_targets():
try:
llc_version_info = Popen([LLVM_COMPILER, '--version'], stdout=PIPE).communicate()[0]
pre, targets = llc_version_info.split('Registered Targets:')
return targets
except Exception, e:
return '(no targets could be identified: ' + str(e) + ')'
def has_asm_js_target(targets):
return 'js' in targets and 'JavaScript (asm.js, emscripten) backend' in targets
def has_wasm_target(targets):
return 'wasm32' in targets and 'WebAssembly 32-bit' in targets
def check_fastcomp():
try:
targets = get_llc_targets()
if get_llvm_target() == ASM_JS_TARGET:
if not has_asm_js_target(targets):
logging.critical('fastcomp in use, but LLVM has not been built with the JavaScript backend as a target, llc reports:')
print >> sys.stderr, '==========================================================================='
print >> sys.stderr, targets
print >> sys.stderr, '==========================================================================='
logging.critical('you can fall back to the older (pre-fastcomp) compiler core, although that is not recommended, see http://kripken.github.io/emscripten-site/docs/building_from_source/LLVM-Backend.html')
return False
else:
assert get_llvm_target() == WASM_TARGET
if not has_wasm_target(targets):
logging.critical('WebAssembly set as target, but LLVM has not been built with the WebAssembly backend, llc reports:')
print >> sys.stderr, '==========================================================================='
print >> sys.stderr, targets
print >> sys.stderr, '==========================================================================='
return False
if get_llvm_target() == ASM_JS_TARGET:
# check repo versions
d = get_fastcomp_src_dir()
shown_repo_version_error = False
if d is not None:
llvm_version = get_emscripten_version(os.path.join(d, 'emscripten-version.txt'))
if os.path.exists(os.path.join(d, 'tools', 'clang', 'emscripten-version.txt')):
clang_version = get_emscripten_version(os.path.join(d, 'tools', 'clang', 'emscripten-version.txt'))
elif os.path.exists(os.path.join(d, 'tools', 'clang')):
clang_version = '?' # Looks like the LLVM compiler tree has an old checkout from the time before it contained a version.txt: Should update!
else:
clang_version = llvm_version # This LLVM compiler tree does not have a tools/clang, so it's probably an out-of-source build directory. No need for separate versioning.
if EMSCRIPTEN_VERSION != llvm_version or EMSCRIPTEN_VERSION != clang_version:
logging.error('Emscripten, llvm and clang repo versions do not match, this is dangerous (%s, %s, %s)', EMSCRIPTEN_VERSION, llvm_version, clang_version)
logging.error('Make sure to use the same branch in each repo, and to be up-to-date on each. See http://kripken.github.io/emscripten-site/docs/building_from_source/LLVM-Backend.html')
shown_repo_version_error = True
else:
logging.warning('did not see a source tree above or next to the LLVM root directory (guessing based on directory of %s), could not verify version numbers match' % LLVM_COMPILER)
# check build versions. don't show it if the repos are wrong, user should fix that first
if not shown_repo_version_error:
clang_v = Popen([CLANG, '--version'], stdout=PIPE).communicate()[0]
llvm_build_version, clang_build_version = clang_v.split('(emscripten ')[1].split(')')[0].split(' : ')
if EMSCRIPTEN_VERSION != llvm_build_version or EMSCRIPTEN_VERSION != clang_build_version:
logging.error('Emscripten, llvm and clang build versions do not match, this is dangerous (%s, %s, %s)', EMSCRIPTEN_VERSION, llvm_build_version, clang_build_version)
logging.error('Make sure to rebuild llvm and clang after updating repos')
return True
except Exception, e:
logging.warning('could not check fastcomp: %s' % str(e))
return True
EXPECTED_NODE_VERSION = (0,8,0)
def check_node_version():
jsrun.check_engine(NODE_JS)
try:
actual = Popen(NODE_JS + ['--version'], stdout=PIPE).communicate()[0].strip()
version = tuple(map(int, actual.replace('v', '').replace('-pre', '').split('.')))
if version >= EXPECTED_NODE_VERSION:
return True
logging.warning('node version appears too old (seeing "%s", expected "%s")' % (actual, 'v' + ('.'.join(map(str, EXPECTED_NODE_VERSION)))))
return False
except Exception, e:
logging.warning('cannot check node version: %s', e)
return False
def check_closure_compiler():
try:
subprocess.call([JAVA, '-version'], stdout=PIPE, stderr=PIPE)
except:
logging.warning('java does not seem to exist, required for closure compiler, which is optional (define JAVA in ' + hint_config_file_location() + ' if you want it)')
return False
if not os.path.exists(CLOSURE_COMPILER):
logging.warning('Closure compiler (%s) does not exist, check the paths in %s' % (CLOSURE_COMPILER, EM_CONFIG))
return False
return True
# Finds the system temp directory without resorting to using the one configured in .emscripten
def find_temp_directory():
if WINDOWS:
if os.getenv('TEMP') and os.path.isdir(os.getenv('TEMP')):
return os.getenv('TEMP')
elif os.getenv('TMP') and os.path.isdir(os.getenv('TMP')):
return os.getenv('TMP')
elif os.path.isdir('C:\\temp'):
return os.getenv('C:\\temp')
else:
return None # No luck!
else:
return '/tmp'
def get_emscripten_version(path):
return open(path).read().strip().replace('"', '')
# Check that basic stuff we need (a JS engine to compile, Node.js, and Clang and LLVM)
# exists.
# The test runner always does this check (through |force|). emcc does this less frequently,
# only when ${EM_CONFIG}_sanity does not exist or is older than EM_CONFIG (so,
# we re-check sanity when the settings are changed)
# We also re-check sanity and clear the cache when the version changes
try:
EMSCRIPTEN_VERSION = get_emscripten_version(path_from_root('emscripten-version.txt'))
try:
parts = map(int, EMSCRIPTEN_VERSION.split('.'))
EMSCRIPTEN_VERSION_MAJOR = parts[0]
EMSCRIPTEN_VERSION_MINOR = parts[1]
EMSCRIPTEN_VERSION_TINY = parts[2]
except Exception, e:
logging.warning('emscripten version ' + EMSCRIPTEN_VERSION + ' lacks standard parts')
EMSCRIPTEN_VERSION_MAJOR = 0
EMSCRIPTEN_VERSION_MINOR = 0
EMSCRIPTEN_VERSION_TINY = 0
raise e
except Exception, e:
logging.error('cannot find emscripten version ' + str(e))
EMSCRIPTEN_VERSION = 'unknown'
def generate_sanity():
return EMSCRIPTEN_VERSION + '|' + LLVM_ROOT + '|' + get_clang_version() + ('_wasm' if get_llvm_target() == WASM_TARGET else '')
def check_sanity(force=False):
ToolchainProfiler.enter_block('sanity')
try:
if os.environ.get('EMCC_SKIP_SANITY_CHECK') == '1':
return
reason = None
if not CONFIG_FILE:
return # config stored directly in EM_CONFIG => skip sanity checks
else:
settings_mtime = os.stat(CONFIG_FILE).st_mtime
sanity_file = CONFIG_FILE + '_sanity'
if get_llvm_target() == WASM_TARGET:
sanity_file += '_wasm'
if os.path.exists(sanity_file):
try:
sanity_mtime = os.stat(sanity_file).st_mtime
if sanity_mtime <= settings_mtime:
reason = 'settings file has changed'
else:
sanity_data = open(sanity_file).read().rstrip('\n\r') # workaround weird bug with read() that appends new line char in some old python version
if sanity_data != generate_sanity():
reason = 'system change: %s vs %s' % (generate_sanity(), sanity_data)
else:
if not force: return # all is well
except Exception, e:
reason = 'unknown: ' + str(e)
if reason:
logging.warning('(Emscripten: %s, clearing cache)' % reason)
Cache.erase()
force = False # the check actually failed, so definitely write out the sanity file, to avoid others later seeing failures too
# some warning, mostly not fatal checks - do them even if EM_IGNORE_SANITY is on
check_llvm_version()
check_node_version()
if os.environ.get('EMCC_FAST_COMPILER') == '0':
logging.critical('Non-fastcomp compiler is no longer available, please use fastcomp or an older version of emscripten')
sys.exit(1)
fastcomp_ok = check_fastcomp()
if os.environ.get('EM_IGNORE_SANITY'):
logging.info('EM_IGNORE_SANITY set, ignoring sanity checks')
return
logging.info('(Emscripten: Running sanity checks)')
with ToolchainProfiler.profile_block('sanity compiler_engine'):
if not jsrun.check_engine(COMPILER_ENGINE):
logging.critical('The JavaScript shell used for compiling (%s) does not seem to work, check the paths in %s' % (COMPILER_ENGINE, EM_CONFIG))
sys.exit(1)
with ToolchainProfiler.profile_block('sanity LLVM'):
for cmd in [CLANG, LLVM_LINK, LLVM_AR, LLVM_OPT, LLVM_AS, LLVM_DIS, LLVM_NM, LLVM_INTERPRETER]:
if not os.path.exists(cmd) and not os.path.exists(cmd + '.exe'): # .exe extension required for Windows
logging.critical('Cannot find %s, check the paths in %s' % (cmd, EM_CONFIG))
sys.exit(1)
if not os.path.exists(PYTHON) and not os.path.exists(cmd + '.exe'):
try:
subprocess.check_call([PYTHON, '--version'], stdout=PIPE, stderr=PIPE)
except:
logging.critical('Cannot find %s, check the paths in %s' % (PYTHON, EM_CONFIG))
sys.exit(1)
if not fastcomp_ok:
logging.critical('failing sanity checks due to previous fastcomp failure')
sys.exit(1)
# Sanity check passed!
with ToolchainProfiler.profile_block('sanity closure compiler'):
if not check_closure_compiler():
logging.warning('closure compiler will not be available')
if not force:
# Only create/update this file if the sanity check succeeded, i.e., we got here
f = open(sanity_file, 'w')
f.write(generate_sanity())
f.close()
except Exception, e:
# Any error here is not worth failing on
print 'WARNING: sanity check failed to run', e
finally:
ToolchainProfiler.exit_block('sanity')
# Tools/paths
try:
LLVM_ADD_VERSION
except NameError:
LLVM_ADD_VERSION = os.getenv('LLVM_ADD_VERSION')
try:
CLANG_ADD_VERSION
except NameError:
CLANG_ADD_VERSION = os.getenv('CLANG_ADD_VERSION')
# Some distributions ship with multiple llvm versions so they add
# the version to the binaries, cope with that
def build_llvm_tool_path(tool):
if LLVM_ADD_VERSION:
return os.path.join(LLVM_ROOT, tool + "-" + LLVM_ADD_VERSION)
else:
return os.path.join(LLVM_ROOT, tool)
# Some distributions ship with multiple clang versions so they add
# the version to the binaries, cope with that
def build_clang_tool_path(tool):
if CLANG_ADD_VERSION:
return os.path.join(LLVM_ROOT, tool + "-" + CLANG_ADD_VERSION)
else:
return os.path.join(LLVM_ROOT, tool)
# Whenever building a native executable for OSX, we must provide the OSX SDK version we want to target.
def osx_find_native_sdk_path():
try:
sdk_root = '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs'
sdks = os.walk(sdk_root).next()[1]
sdk_path = os.path.join(sdk_root, sdks[0]) # Just pick first one found, we don't care which one we found.
logging.debug('Targeting OSX SDK found at ' + sdk_path)
return sdk_path
except:
logging.warning('Could not find native OSX SDK path to target!')
return None
# These extra args need to be passed to Clang when targeting a native host system executable
CACHED_CLANG_NATIVE_ARGS=None
def get_clang_native_args():
global CACHED_CLANG_NATIVE_ARGS
if CACHED_CLANG_NATIVE_ARGS is not None: return CACHED_CLANG_NATIVE_ARGS
CACHED_CLANG_NATIVE_ARGS = []
if OSX:
sdk_path = osx_find_native_sdk_path()
if sdk_path:
CACHED_CLANG_NATIVE_ARGS = ['-isysroot', osx_find_native_sdk_path()]
elif os.name == 'nt':
CACHED_CLANG_NATIVE_ARGS = ['-DWIN32']
# TODO: If Windows.h et al. are needed, will need to add something like '-isystemC:/Program Files (x86)/Microsoft SDKs/Windows/v7.1A/Include'.
return CACHED_CLANG_NATIVE_ARGS
# This environment needs to be present when targeting a native host system executable
CACHED_CLANG_NATIVE_ENV=None
def get_clang_native_env():
global CACHED_CLANG_NATIVE_ENV
if CACHED_CLANG_NATIVE_ENV is not None: return CACHED_CLANG_NATIVE_ENV
env = os.environ.copy()
if WINDOWS:
# If already running in Visual Studio Command Prompt manually, no need to add anything here, so just return.
if 'VSINSTALLDIR' in env and 'INCLUDE' in env and 'LIB' in env:
CACHED_CLANG_NATIVE_ENV = env
return env
# Guess where VS2015 is installed (VSINSTALLDIR env. var in VS2015 X64 Command Prompt)
if 'VSINSTALLDIR' in env: visual_studio_path = env['VSINSTALLDIR']
elif 'VS140COMNTOOLS' in env: visual_studio_path = os.path.normpath(os.path.join(env['VS140COMNTOOLS'], '../..'))
elif 'ProgramFiles(x86)' in env: visual_studio_path = os.path.normpath(os.path.join(env['ProgramFiles(x86)'], 'Microsoft Visual Studio 14.0'))
elif 'ProgramFiles' in env: visual_studio_path = os.path.normpath(os.path.join(env['ProgramFiles'], 'Microsoft Visual Studio 14.0'))
else: visual_studio_path = 'C:\\Program Files (x86)\\Microsoft Visual Studio 14.0'
if not os.path.isdir(visual_studio_path):
raise Exception('Visual Studio 2015 was not found in "' + visual_studio_path + '"! Run in Visual Studio X64 command prompt to avoid the need to autoguess this location (or set VSINSTALLDIR env var).')
# Guess where Program Files (x86) is located
if 'ProgramFiles(x86)' in env: prog_files_x86 = env['ProgramFiles(x86)']
elif 'ProgramFiles' in env: prog_files_x86 = env['ProgramFiles']
elif os.path.isdir('C:\\Program Files (x86)'): prog_files_x86 = 'C:\\Program Files (x86)'
elif os.path.isdir('C:\\Program Files'): prog_files_x86 = 'C:\\Program Files'
else:
raise Exception('Unable to detect Program files directory for native Visual Studio build!')
# Guess where Windows 8.1 SDK is located
if 'WindowsSdkDir' in env:
windows8_sdk_dir = env['WindowsSdkDir']
elif os.path.isdir(os.path.join(prog_files_x86, 'Windows Kits', '8.1')):
windows8_sdk_dir = os.path.join(prog_files_x86, 'Windows Kits', '8.1')
if not os.path.isdir(windows8_sdk_dir):
raise Exception('Windows 8.1 SDK was not found in "' + windows8_sdk_dir + '"! Run in Visual Studio command prompt to avoid the need to autoguess this location (or set WindowsSdkDir env var).')
# Guess where Windows 10 SDK is located
if os.path.isdir(os.path.join(prog_files_x86, 'Windows Kits', '10')):
windows10_sdk_dir = os.path.join(prog_files_x86, 'Windows Kits', '10')
if not os.path.isdir(windows10_sdk_dir):
raise Exception('Windows 10 SDK was not found in "' + windows10_sdk_dir + '"! Run in Visual Studio command prompt to avoid the need to autoguess this location.')
if not 'VSINSTALLDIR' in env: env['VSINSTALLDIR'] = visual_studio_path
if not 'VCINSTALLDIR' in env: env['VCINSTALLDIR'] = os.path.join(visual_studio_path, 'VC')
windows10sdk_kits_include_dir = os.path.join(windows10_sdk_dir, 'Include')
windows10sdk_kit_version_name = [x for x in os.listdir(windows10sdk_kits_include_dir) if os.path.isdir(os.path.join(windows10sdk_kits_include_dir, x))][0] # e.g. "10.0.10150.0" or "10.0.10240.0"
def append_item(key, item):
if not key in env or len(env[key].strip()) == 0: env[key] = item
else: env[key] = env[key] + ';' + item
append_item('INCLUDE', os.path.join(env['VCINSTALLDIR'], 'INCLUDE'))
append_item('INCLUDE', os.path.join(env['VCINSTALLDIR'], 'ATLMFC', 'INCLUDE'))
append_item('INCLUDE', os.path.join(windows10_sdk_dir, 'include', windows10sdk_kit_version_name, 'ucrt'))
# append_item('INCLUDE', 'C:\\Program Files (x86)\\Windows Kits\\NETFXSDK\\4.6.1\\include\\um') # VS2015 X64 command prompt has this, but not needed for Emscripten
append_item('INCLUDE', os.path.join(env['VCINSTALLDIR'], 'ATLMFC', 'INCLUDE'))
append_item('INCLUDE', os.path.join(windows8_sdk_dir, 'include', 'shared'))
append_item('INCLUDE', os.path.join(windows8_sdk_dir, 'include', 'um'))
append_item('INCLUDE', os.path.join(windows8_sdk_dir, 'include', 'winrt'))
logging.debug('VS2015 native build INCLUDE: ' + env['INCLUDE'])
append_item('LIB', os.path.join(env['VCINSTALLDIR'], 'LIB', 'amd64'))
append_item('LIB', os.path.join(env['VCINSTALLDIR'], 'ATLMFC', 'LIB', 'amd64'))
append_item('LIB', os.path.join(windows10_sdk_dir, 'lib', windows10sdk_kit_version_name, 'ucrt', 'x64'))
# append_item('LIB', 'C:\\Program Files (x86)\\Windows Kits\\NETFXSDK\\4.6.1\\lib\\um\\x64') # VS2015 X64 command prompt has this, but not needed for Emscripten
append_item('LIB', os.path.join(windows8_sdk_dir, 'lib', 'winv6.3', 'um', 'x64'))
logging.debug('VS2015 native build LIB: ' + env['LIB'])
env['PATH'] = env['PATH'] + ';' + os.path.join(env['VCINSTALLDIR'], 'BIN')
logging.debug('VS2015 native build PATH: ' + env['PATH'])
# Current configuration above is all Visual Studio -specific, so on non-Windowses, no action needed.
CACHED_CLANG_NATIVE_ENV = env
return env
CLANG_CC=os.path.expanduser(build_clang_tool_path('clang'))
CLANG_CPP=os.path.expanduser(build_clang_tool_path('clang++'))
CLANG=CLANG_CPP
LLVM_LINK=build_llvm_tool_path('llvm-link')
LLVM_AR=build_llvm_tool_path('llvm-ar')
LLVM_OPT=os.path.expanduser(build_llvm_tool_path('opt'))
LLVM_AS=os.path.expanduser(build_llvm_tool_path('llvm-as'))
LLVM_DIS=os.path.expanduser(build_llvm_tool_path('llvm-dis'))
LLVM_NM=os.path.expanduser(build_llvm_tool_path('llvm-nm'))
LLVM_INTERPRETER=os.path.expanduser(build_llvm_tool_path('lli'))
LLVM_COMPILER=os.path.expanduser(build_llvm_tool_path('llc'))
EMSCRIPTEN = path_from_root('emscripten.py')
DEMANGLER = path_from_root('third_party', 'demangler.py')
NAMESPACER = path_from_root('tools', 'namespacer.py')
EMCC = path_from_root('emcc')
EMXX = path_from_root('em++')
EMAR = path_from_root('emar')
EMRANLIB = path_from_root('emranlib')
EMCONFIG = path_from_root('em-config')
EMLINK = path_from_root('emlink.py')
EMMAKEN = path_from_root('tools', 'emmaken.py')
AUTODEBUGGER = path_from_root('tools', 'autodebugger.py')
BINDINGS_GENERATOR = path_from_root('tools', 'bindings_generator.py')
EXEC_LLVM = path_from_root('tools', 'exec_llvm.py')
FILE_PACKAGER = path_from_root('tools', 'file_packager.py')
# Temp dir. Create a random one, unless EMCC_DEBUG is set, in which case use TEMP_DIR/emscripten_temp
def safe_ensure_dirs(dirname):
try:
os.makedirs(dirname)
except os.error, e:
# Ignore error for already existing dirname
if e.errno != errno.EEXIST:
raise e
# FIXME: Notice that this will result in a false positive,
# should the dirname be a file! There seems to no way to
# handle this atomically in Python 2.x.
# There is an additional option for Python 3.x, though.
# Returns a path to EMSCRIPTEN_TEMP_DIR, creating one if it didn't exist.
def get_emscripten_temp_dir():
global configuration, EMSCRIPTEN_TEMP_DIR
if not EMSCRIPTEN_TEMP_DIR:
EMSCRIPTEN_TEMP_DIR = tempfile.mkdtemp(prefix='emscripten_temp_', dir=configuration.TEMP_DIR)
def prepare_to_clean_temp(d):
def clean_temp():
try_delete(d)
atexit.register(clean_temp)
prepare_to_clean_temp(EMSCRIPTEN_TEMP_DIR) # this global var might change later
return EMSCRIPTEN_TEMP_DIR
class Configuration:
def __init__(self, environ=os.environ):
self.DEBUG = environ.get('EMCC_DEBUG')
if self.DEBUG == "0":
self.DEBUG = None
self.DEBUG_CACHE = self.DEBUG and "cache" in self.DEBUG
self.EMSCRIPTEN_TEMP_DIR = None
try:
self.TEMP_DIR = TEMP_DIR
except NameError:
self.TEMP_DIR = find_temp_directory()
if self.TEMP_DIR == None:
logging.critical('TEMP_DIR not defined in ' + hint_config_file_location() + ", and could not detect a suitable directory! Please configure .emscripten to contain a variable TEMP_DIR='/path/to/temp/dir'.")
logging.debug('TEMP_DIR not defined in ' + hint_config_file_location() + ', using ' + self.TEMP_DIR)
if not os.path.isdir(self.TEMP_DIR):
logging.critical("The temp directory TEMP_DIR='" + self.TEMP_DIR + "' doesn't seem to exist! Please make sure that the path is correct.")
self.CANONICAL_TEMP_DIR = os.path.join(self.TEMP_DIR, 'emscripten_temp')
if self.DEBUG:
try:
self.EMSCRIPTEN_TEMP_DIR = self.CANONICAL_TEMP_DIR
safe_ensure_dirs(self.EMSCRIPTEN_TEMP_DIR)
except Exception, e:
logging.error(str(e) + 'Could not create canonical temp dir. Check definition of TEMP_DIR in ' + hint_config_file_location())
def get_temp_files(self):
return tempfiles.TempFiles(
tmp=self.TEMP_DIR if not self.DEBUG else get_emscripten_temp_dir(),
save_debug_files=os.environ.get('EMCC_DEBUG_SAVE'))
def apply_configuration():
global configuration, DEBUG, EMSCRIPTEN_TEMP_DIR, DEBUG_CACHE, CANONICAL_TEMP_DIR, TEMP_DIR
configuration = Configuration()
DEBUG = configuration.DEBUG
EMSCRIPTEN_TEMP_DIR = configuration.EMSCRIPTEN_TEMP_DIR
DEBUG_CACHE = configuration.DEBUG_CACHE
CANONICAL_TEMP_DIR = configuration.CANONICAL_TEMP_DIR
TEMP_DIR = configuration.TEMP_DIR
apply_configuration()
logging.basicConfig(format='%(levelname)-8s %(name)s: %(message)s') # can add %(asctime)s to see timestamps
def set_logging():
logger = logging.getLogger()
logger.setLevel(logging.DEBUG if os.environ.get('EMCC_DEBUG') else logging.INFO)
set_logging()
# EM_CONFIG stuff
try:
JS_ENGINES
except:
try:
JS_ENGINES = [JS_ENGINE]
except Exception, e:
print 'ERROR: %s does not seem to have JS_ENGINES or JS_ENGINE set up' % EM_CONFIG
raise
try:
CLOSURE_COMPILER
except:
CLOSURE_COMPILER = path_from_root('third_party', 'closure-compiler', 'compiler.jar')
try:
PYTHON
except:
logging.debug('PYTHON not defined in ' + hint_config_file_location() + ', using "%s"' % (sys.executable,))
PYTHON = sys.executable
try:
JAVA
except:
logging.debug('JAVA not defined in ' + hint_config_file_location() + ', using "java"')
JAVA = 'java'
# Additional compiler options
# Target choice.
ASM_JS_TARGET = 'asmjs-unknown-emscripten'
WASM_TARGET = 'wasm32-unknown-unknown'
def check_vanilla():
global LLVM_TARGET
# if the env var tells us what to do, do that
if 'EMCC_WASM_BACKEND' in os.environ:
if os.environ['EMCC_WASM_BACKEND'] != '0':
logging.debug('EMCC_WASM_BACKEND tells us to use wasm backend')
LLVM_TARGET = WASM_TARGET
else:
logging.debug('EMCC_WASM_BACKEND tells us to use asm.js backend')
LLVM_TARGET = ASM_JS_TARGET
else:
# if we are using vanilla LLVM, i.e. we don't have our asm.js backend, then we
# must use wasm (or at least try to). to know that, we have to run llc to
# see which backends it has. we cache this result.
temp_cache = cache.Cache(use_subdir=False)
def check_vanilla():
logging.debug('testing for asm.js target, because if not present (i.e. this is plain vanilla llvm, not emscripten fastcomp), we will use the wasm target instead (set EMCC_WASM_BACKEND to skip this check)')
targets = get_llc_targets()
return has_wasm_target(targets) and not has_asm_js_target(targets)
def get_vanilla_file():
saved_file = os.path.join(temp_cache.dirname, 'is_vanilla.txt')
open(saved_file, 'w').write(('1' if check_vanilla() else '0') + ':' + LLVM_ROOT)
return saved_file
is_vanilla_file = temp_cache.get('is_vanilla', get_vanilla_file, extension='.txt')
if CONFIG_FILE and os.stat(CONFIG_FILE).st_mtime > os.stat(is_vanilla_file).st_mtime:
logging.debug('config file changed since we checked vanilla; re-checking')
is_vanilla_file = temp_cache.get('is_vanilla', get_vanilla_file, extension='.txt', force=True)
try:
contents = open(is_vanilla_file).read()
middle = contents.index(':')
is_vanilla = int(contents[:middle])
llvm_used = contents[middle + 1:]
if llvm_used != LLVM_ROOT:
logging.debug('regenerating vanilla check since other llvm')
temp_cache.get('is_vanilla', get_vanilla_file, extension='.txt', force=True)
is_vanilla = check_vanilla()
except Exception, e:
logging.debug('failed to use vanilla file, will re-check: ' + str(e))
is_vanilla = check_vanilla()
temp_cache = None
if is_vanilla:
logging.debug('check tells us to use wasm backend')
LLVM_TARGET = WASM_TARGET
os.environ['EMCC_WASM_BACKEND'] = '1'
else:
logging.debug('check tells us to use asm.js backend')
LLVM_TARGET = ASM_JS_TARGET
check_vanilla()
def get_llvm_target():
global LLVM_TARGET
assert LLVM_TARGET is not None
return LLVM_TARGET
# COMPILER_OPTS: options passed to clang when generating bitcode for us
try:
COMPILER_OPTS # Can be set in EM_CONFIG, optionally
except:
COMPILER_OPTS = []
# Set the LIBCPP ABI version to at least 2 so that we get nicely aligned string
# data and other nice fixes.
COMPILER_OPTS = COMPILER_OPTS + [#'-fno-threadsafe-statics', # disabled due to issue 1289
'-target', get_llvm_target(),
'-D__EMSCRIPTEN_major__=' + str(EMSCRIPTEN_VERSION_MAJOR),
'-D__EMSCRIPTEN_minor__=' + str(EMSCRIPTEN_VERSION_MINOR),
'-D__EMSCRIPTEN_tiny__=' + str(EMSCRIPTEN_VERSION_TINY),
'-D_LIBCPP_ABI_VERSION=2']
if LLVM_TARGET == WASM_TARGET:
# wasm target does not automatically define emscripten stuff, so do it here.
COMPILER_OPTS = COMPILER_OPTS + ['-DEMSCRIPTEN',
'-D__EMSCRIPTEN__',
'-Dunix',
'-D__unix',
'-D__unix__']
# Changes to default clang behavior
# Implicit functions can cause horribly confusing function pointer type errors, see #2175
# If your codebase really needs them - very unrecommended! - you can disable the error with
# -Wno-error=implicit-function-declaration
# or disable even a warning about it with
# -Wno-implicit-function-declaration
COMPILER_OPTS += ['-Werror=implicit-function-declaration']
USE_EMSDK = not os.environ.get('EMMAKEN_NO_SDK')
if USE_EMSDK:
# Disable system C and C++ include directories, and add our own (using -idirafter so they are last, like system dirs, which
# allows projects to override them)
C_INCLUDE_PATHS = [
path_from_root('system', 'include', 'compat'),
path_from_root('system', 'include'),
path_from_root('system', 'include', 'emscripten'),
path_from_root('system', 'include', 'SSE'),
path_from_root('system', 'include', 'libc'),
path_from_root('system', 'lib', 'libc', 'musl', 'arch', 'emscripten'),
path_from_root('system', 'local', 'include')
]
CXX_INCLUDE_PATHS = [
path_from_root('system', 'include', 'libcxx'),
path_from_root('system', 'lib', 'libcxxabi', 'include')
]
C_OPTS = ['-nostdinc', '-Xclang', '-nobuiltininc', '-Xclang', '-nostdsysteminc']
def include_directive(paths):
result = []
for path in paths:
result += ['-Xclang', '-isystem' + path]
return result
# libcxx include paths must be defined before libc's include paths otherwise libcxx will not build
EMSDK_OPTS = C_OPTS + include_directive(CXX_INCLUDE_PATHS) + include_directive(C_INCLUDE_PATHS)
EMSDK_CXX_OPTS = []
COMPILER_OPTS += EMSDK_OPTS
else:
EMSDK_OPTS = []
EMSDK_CXX_OPTS = []
# Engine tweaks
try:
if SPIDERMONKEY_ENGINE:
new_spidermonkey = SPIDERMONKEY_ENGINE
if '-w' not in str(new_spidermonkey):
new_spidermonkey += ['-w']
SPIDERMONKEY_ENGINE = fix_js_engine(SPIDERMONKEY_ENGINE, new_spidermonkey)
except NameError:
pass
# If we have 'env', we should use that to find python, because |python| may fail while |env python| may work
# (For example, if system python is 3.x while we need 2.x, and env gives 2.x if told to do so.)
ENV_PREFIX = []
if not WINDOWS:
try:
assert 'Python' in Popen(['env', 'python', '-V'], stdout=PIPE, stderr=STDOUT).communicate()[0]
ENV_PREFIX = ['env']
except: