how can i fix this download chromium prob

Question

i try to downwload chromium code . i'm currently at the command $ gn gen out/Default but its show me this error :

C:\Users\sapir\Downloads\depot_tools\chromium\src>gn gen out/Default
Traceback (most recent call last):
  File "C:/Users/sapir/Downloads/depot_tools/chromium/src/build/vs_toolchain.py", line 577, in <module>
    sys.exit(main())
  File "C:/Users/sapir/Downloads/depot_tools/chromium/src/build/vs_toolchain.py", line 573, in main
    return commands[sys.argv[1]](*sys.argv[2:])
  File "C:/Users/sapir/Downloads/depot_tools/chromium/src/build/vs_toolchain.py", line 388, in CopyDlls
    _CopyDebugger(target_dir, target_cpu)
  File "C:/Users/sapir/Downloads/depot_tools/chromium/src/build/vs_toolchain.py", line 424, in _CopyDebugger
    (debug_file, full_path))
Exception: dbghelp.dll not found in "C:\Program Files (x86)\Windows Kits\10\Debuggers\x64\dbghelp.dll"
You must installWindows 10 SDK version 10.0.19041.0 including the "Debugging Tools for Windows" feature.
**ERROR** at //build/toolchain/win/BUILD.gn:49:3: Script returned non-zero exit code.
  exec_script("../../vs_toolchain.py",
  ^----------
Current dir: C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default/
Command: C:/Users/sapir/Downloads/depot_tools/bootstrap-3_8_0_chromium_8_bin/python/bin/python.exe C:/Users/sapir/Downloads/depot_tools/chromium/src/build/vs_toolchain.py copy_dlls C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default Debug x64
Returned 1 and printed out:

Copying C:\WINDOWS\System32\msvcp140.dll to C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default\msvcp140.dll...
Copying C:\WINDOWS\System32\vccorlib140.dll to C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default\vccorlib140.dll...
Copying C:\WINDOWS\System32\vcruntime140.dll to C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default\vcruntime140.dll...
Copying C:\WINDOWS\System32\vcruntime140_1.dll to C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default\vcruntime140_1.dll...
Copying C:\WINDOWS\System32\ucrtbase.dll to C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default\ucrtbase.dll...
Copying C:\WINDOWS\System32\msvcp140d.dll to C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default\msvcp140d.dll...
Copying C:\WINDOWS\System32\vccorlib140d.dll to C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default\vccorlib140d.dll...
Copying C:\WINDOWS\System32\vcruntime140d.dll to C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default\vcruntime140d.dll...
Copying C:\WINDOWS\System32\vcruntime140_1d.dll to C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default\vcruntime140_1d.dll...
Copying C:\Program Files (x86)\Windows Kits\10\bin\10.0.18362.0\x64\ucrt\ucrtbased.dll to C:/Users/sapir/Downloads/depot_tools/chromium/src/out/Default\ucrtbased.dll...

See //BUILD.gn:66:1: which caused the file to be included.
group("gn_all") {
^----------------
Traceback (most recent call last):
  File "C:/Users/sapir/Downloads/depot_tools/chromium/src/build/toolchain/win/setup_toolchain.py", line 304, in <module>
    main()
  File "C:/Users/sapir/Downloads/depot_tools/chromium/src/build/toolchain/win/setup_toolchain.py", line 257, in main
    vc_lib_um_path = FindFileInEnvList(env, 'LIB', ';', 'user32.lib')
  File "C:/Users/sapir/Downloads/depot_tools/chromium/src/build/toolchain/win/setup_toolchain.py", line 211, in FindFileInEnvList
    file_name, env_name, '\n'.join(parts))
AssertionError: user32.lib is not found in LIB:
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.27.29110\ATLMFC\lib\x64
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.27.29110\lib\x64
C:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\lib\um\x64
C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\ucrt\x64
C:\Program Files (x86)\Windows Kits\10\lib\10.0.19041.0\um\x64
Check if it is installed.

what i need to do ??

Answer 1

You have not installed the debugging tools for Windows. It's quiet clear from this message

You must install Windows 10 SDK version 10.0.19041.0 including the "Debugging Tools for Windows"

because the GN build system is searching for those files when generating build files when executing the command gn gen out\YourBuildFolder. You should install Debugging Tools for Windows and looks like the Chromium version that you are using requires Windows 10 SDK version 10.0.19041.0.