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# Copyright 2020 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.
import logging
import os
import platform
import sys
from tools.shared import PIPE, run_process, CLANG_CC, CLANG_CXX
from tools.utils import MACOS, WINDOWS, path_from_root
logger = logging.getLogger('clang_native')
def get_native_triple():
arch = {
'aarch64': 'arm64',
'arm64': 'arm64',
'x86_64': 'x86_64',
'AMD64': 'x86_64',
}[platform.machine()]
OS = {
'linux': 'linux',
'darwin': 'darwin',
'win32': 'windows-msvc',
}[sys.platform]
return f'{arch}-{OS}'
# These extra args need to be passed to Clang when targeting a native host system executable
def get_clang_native_args():
triple = ['--target=' + get_native_triple()]
if MACOS:
return triple + ['-isystem', path_from_root('system/include/libcxx')]
elif os.name == 'nt':
# 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 triple + ['-DWIN32']
else:
return triple
# 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()
env['CC'] = CLANG_CC
env['CXX'] = CLANG_CXX
env['LD'] = CLANG_CXX
if MACOS:
path = run_process(['xcrun', '--show-sdk-path'], stdout=PIPE).stdout.strip()
logger.debug('Using MacOS SDKROOT: ' + path)
env['SDKROOT'] = path
elif 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']
else:
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.')
env.setdefault('VSINSTALLDIR', visual_studio_path)
env.setdefault('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 key not 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'))
logger.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'))
logger.debug('VS2015 native build LIB: ' + env['LIB'])
env['PATH'] = env['PATH'] + ';' + os.path.join(env['VCINSTALLDIR'], 'BIN')
logger.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
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