in build/vs_toolchain.py [0:0]
def _CopyUCRTRuntime(target_dir, source_dir, target_cpu, dll_pattern, suffix):
"""Copy both the msvcp and vccorlib runtime DLLs, only if the target doesn't
exist, but the target directory does exist."""
if target_cpu == 'arm64':
# Windows ARM64 VCRuntime is located at {toolchain_root}/VC/Redist/MSVC/
# {x.y.z}/[debug_nonredist/]arm64/Microsoft.VC141.CRT/.
vc_redist_root = FindVCRedistRoot()
if suffix.startswith('.'):
source_dir = os.path.join(vc_redist_root,
'arm64', 'Microsoft.VC141.CRT')
else:
source_dir = os.path.join(vc_redist_root, 'debug_nonredist',
'arm64', 'Microsoft.VC141.DebugCRT')
for file_part in ('msvcp', 'vccorlib', 'vcruntime'):
dll = dll_pattern % file_part
target = os.path.join(target_dir, dll)
source = os.path.join(source_dir, dll)
_CopyRuntimeImpl(target, source)
# Copy the UCRT files from the Windows SDK. This location includes the
# api-ms-win-crt-*.dll files that are not found in the Windows directory.
# These files are needed for component builds. If WINDOWSSDKDIR is not set
# use the default SDK path. This will be the case when
# DEPOT_TOOLS_WIN_TOOLCHAIN=0 and vcvarsall.bat has not been run.
win_sdk_dir = os.path.normpath(
os.environ.get('WINDOWSSDKDIR',
os.path.expandvars('%ProgramFiles(x86)%'
'\\Windows Kits\\10')))
# ARM64 doesn't have a redist for the ucrt DLLs because they are always
# present in the OS.
if target_cpu != 'arm64':
# Starting with the 10.0.17763 SDK the ucrt files are in a version-named
# directory - this handles both cases.
redist_dir = os.path.join(win_sdk_dir, 'Redist')
version_dirs = glob.glob(os.path.join(redist_dir, '10.*'))
if len(version_dirs) > 0:
_SortByHighestVersionNumberFirst(version_dirs)
redist_dir = version_dirs[0]
ucrt_dll_dirs = os.path.join(redist_dir, 'ucrt', 'DLLs', target_cpu)
ucrt_files = glob.glob(os.path.join(ucrt_dll_dirs, 'api-ms-win-*.dll'))
assert len(ucrt_files) > 0
for ucrt_src_file in ucrt_files:
file_part = os.path.basename(ucrt_src_file)
ucrt_dst_file = os.path.join(target_dir, file_part)
_CopyRuntimeImpl(ucrt_dst_file, ucrt_src_file, False)
# We must copy ucrtbase.dll for x64/x86, and ucrtbased.dll for all CPU types.
if target_cpu != 'arm64' or not suffix.startswith('.'):
if not suffix.startswith('.'):
# ucrtbased.dll is located at {win_sdk_dir}/bin/{a.b.c.d}/{target_cpu}/
# ucrt/.
sdk_bin_root = os.path.join(win_sdk_dir, 'bin')
sdk_bin_sub_dirs = glob.glob(os.path.join(sdk_bin_root, '10.*'))
# Select the most recent SDK if there are multiple versions installed.
_SortByHighestVersionNumberFirst(sdk_bin_sub_dirs)
for directory in sdk_bin_sub_dirs:
sdk_redist_root_version = os.path.join(sdk_bin_root, directory)
if not os.path.isdir(sdk_redist_root_version):
continue
source_dir = os.path.join(sdk_redist_root_version, target_cpu, 'ucrt')
break
_CopyRuntimeImpl(os.path.join(target_dir, 'ucrtbase' + suffix),
os.path.join(source_dir, 'ucrtbase' + suffix))