TianoCore UEFI Development Kit build: how to cause the build process to correctly recognize the build platform (Linux)?

[Aleksey Shevandin <alexey@kazuar-tech.com>]

Dear members,

I'm trying to build *UDK2018* on *Ubuntu 17*. After studying the 
documentation, I had impressed that the platform setup script 
(*sedksetup.sh*) shall configure the build framework to target the 
correct build platform, the tool chain etc. Unfortunately this is not 
what actually happens.

The platform build process (the Build base tool) unexpectedly tries to 
build some *MS Windows* oriented stuff and fails. How this can be fixed?

Following the documented recommendations, at the first stage I build the 
"Base Tools":

|/make all -C ${EDK_TOOLS_PATH}/|

Then I run the setup script:

|/edksetup.sh BaseTools/|

This stages are finished with success, also the setup script runs some 
tests that successfully pass.

On the next stage I'm trying to build the platform:

|build all -a X64 -t GCC5|

This last stage fails with the follow error:

Nt32Pkg/Include/WinNtPeim.h:27:10: fatal error: Common/WinNtInclude.h: 
No such file or directory


Regards,

Aleksey