c:\xxxx\v8>gclient sync
Syncing projects: 100% (16/16), done.
________ running 'C:\xxxx\depot_tools\python276_bin\python.exe v8/build/landmines.py' in 'c:\xxxx\v8'
Please follow the instructions at https://www.chromium.org/developers/how-tos/build-instructions-windows
Traceback (most recent call last):
File "v8/build/landmines.py", line 245, in <module>
sys.exit(main())
File "v8/build/landmines.py", line 232, in main
gyp_environment.set_environment()
File "c:\xxxx\v8\v8\build\gyp_environment.py", line 54, in set_environment
vs_toolchain.SetEnvironmentAndGetRuntimeDllDirs()
File "c:\xxxx\v8\v8\build\vs_toolchain.py", line 40, in SetEnvironmentAndGetRuntimeDllDirs
Update()
File "c:\xxxx\v8\v8\build\vs_toolchain.py", line 226, in Update
subprocess.check_call(get_toolchain_args)
File "C:\xxxx\depot_tools\python276_bin\lib\subprocess.py", line 540, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['C:\\xxxx\\depot_tools\\python276_bin\\python.exe', 'C:\\xxxx\\depot_tools\\win_toolchain\\get_tool
chain_if_necessary.py', '--output-json', 'c:\\xxxx\\v8\\v8\\build\\win_toolchain.json', 'ee7d718ec60c2dc5d255bbe325909c2021a7efef']' returne
d non-zero exit status 1