Confirmed that it seems related to these two commits:
https://github.com/tianocore/edk2/commit/58802e02c41bd715a5d3586f4bf2a4b1c46e9274
https://github.com/tianocore/edk2/commit/06033f5abad3815e8d80de22c97ba38a05017262

If I roll back to the commit prior, the Tools build works. Anyone involved in BaseTools have an idea? @Feng, Bob C<mailto:bob.c.feng@intel.com> or @Liming Gao<mailto:liming.gao@intel.com>?

- Bret

From: Navdeeppal.Singh@dell.com<mailto:Navdeeppal.Singh@dell.com>
Sent: Thursday, April 23, 2020 9:21 AM
To: Bret Barkelew<mailto:Bret.Barkelew@microsoft.com>; devel@edk2.groups.io<mailto:devel@edk2.groups.io>
Subject: RE: [EXTERNAL] [edk2-devel] EDK2 environment setup

I will roll back to 202002 stable tag and try.
Thank you
Navdeep

From: Bret Barkelew <Bret.Barkelew@microsoft.com>
Sent: Thursday, April 23, 2020 9:48 PM
To: Singh, Navdeeppal; devel@edk2.groups.io
Subject: RE: [EXTERNAL] [edk2-devel] EDK2 environment setup


[EXTERNAL EMAIL]
Yeah, I was noticing some problems with BrotliCompress the other day. Seems like a relatively recent change. I know the 202002 stable tag was fine.

I’ll try to dig into this a bit. Thanks for bring it to our attention!

- Bret

From: Navdeeppal.Singh@dell.com<mailto:Navdeeppal.Singh@dell.com>
Sent: Thursday, April 23, 2020 9:14 AM
To: Bret Barkelew<mailto:Bret.Barkelew@microsoft.com>; devel@edk2.groups.io<mailto:devel@edk2.groups.io>
Subject: RE: [EXTERNAL] [edk2-devel] EDK2 environment setup

Hi Bret,
Yes PIP requirements are up to date.
On further digging through the logging file BASETOOLS_BUILD.txt.
INFO - subprocess not exit successfully
INFO - Error while execute command 'nmake all' in direcotry C:\edk2\BaseTools\Source\C\BrotliCompress

Regards,
Navdeep

From: Bret Barkelew <Bret.Barkelew@microsoft.com<mailto:Bret.Barkelew@microsoft.com>>
Sent: Thursday, April 23, 2020 9:37 PM
To: devel@edk2.groups.io<mailto:devel@edk2.groups.io>; Singh, Navdeeppal
Subject: RE: [EXTERNAL] [edk2-devel] EDK2 environment setup


[EXTERNAL EMAIL]
Have you installed the up-to-date Python requirements? “pip install –upgrade -r pip-requirements.txt”?

That’s the first thing I would check. Otherwise, happy to look at the problem with you.

- Bret

From: NAVDEEPPAL_SINGH via groups.io<mailto:NAVDEEPPAL_SINGH=DELL.COM@groups.io>
Sent: Thursday, April 23, 2020 6:05 AM
To: devel@edk2.groups.io<mailto:devel@edk2.groups.io>
Subject: [EXTERNAL] [edk2-devel] EDK2 environment setup

I am trying to setup EDK2 environment setup from Tianocore/EDK2.
While doing the Base Tool setup. After running BaseTool/EDK2ToolsBuild.py -t VS2019
Getting following error :-
c:\edk2\BaseTools>python Edk2ToolsBuild.py  -t VS2019
SECTION - Init SDE
SECTION - Loading Plugins
SECTION - Start Invocable Tool
Traceback (most recent call last):
  File "Edk2ToolsBuild.py", line 177, in <module>
    main()
  File "Edk2ToolsBuild.py", line 173, in main
    Edk2ToolsBuild().Invoke()
  File "C:\Program Files\Python38\lib\site-packages\edk2toolext\base_abstract_invocable.py", line 141, in Invoke
    retcode = self.Go()
  File "Edk2ToolsBuild.py", line 139, in Go
    raise Exception("Failed to build.")
Exception: Failed to build.

set EDK_TOOLS_PATH=C:\edk2\BaseTools
set EDK_TOOLS_BIN=C:\edk2\BaseTools\Bin\Win32
Can some one help