build-runtime.cmd fails when the latest version in C:\Program Files (x86)\Windows Kits\10\Lib does not contain ucrt #42774
Description
Initial cost estimate: 1 week
Initial contacts: @trylek, @hoyosjs, @ViktorHofer
so I just freshly cloned the repo and failed to build. this was what I got when trying to build clr -
CSC : warning CS1668: Invalid search path 'C:\Program Files (x86)\Windows Kits\10\lib\10.0.19041.0\ucrt\x64' specified in 'LIB environment variable' -- 'directory does not exist' [C:\runtime-doubly-fl\artifacts\obj\coreclr\Windows_NT.x64.Release\src\ToolBox\SOS\DacTableGen\dactablegen.csproj]
CSC : warning CS1668: Invalid search path 'C:\Program Files (x86)\Windows Kits\10\lib\10.0.19041.0\ucrt\x86' specified in 'LIB environment variable' -- 'directory does not exist' [C:\runtime-doubly-fl\artifacts\obj\coreclr\Windows_NT.x64.Release\src\ToolBox\SOS\DacTableGen\dactablegen.csproj]
4 Warning(s)
0 Error(s)
Time Elapsed 00:01:17.78
File not found - *.dll
0 File(s) copied
BUILD: Error: Failed to copy the Universal CRT to the artifacts directory.
C:\runtime-doubly-fl\src\coreclr\runtime.proj(37,5): error MSB3073: The command ""C:\runtime-doubly-fl\src\coreclr\build-runtime.cmd" -x64 -release -enforcepgo" exited with code 4.
my latest version in C:\Program Files (x86)\Windows Kits\10\Lib is 10.0.19041.0 but it does not have a ucrt dir in it -
Directory of C:\Program Files (x86)\Windows Kits\10\Lib\10.0.19041.0
08/19/2020 11:16 PM <DIR> .
08/19/2020 11:16 PM <DIR> ..
07/27/2020 01:23 AM <DIR> km
04/18/2019 06:46 PM 512 stub512.com
07/27/2020 12:44 AM <DIR> um
this is because I installed "Windows Driver Kit - Windows 10.0.19041.1" which created this 10.0.19041.0 dir but it did not install ucrt in it.
when I uninstalled the Windows Driver Kit the build succeeded. now the last ver in this dir does have ucrt:
C:\WINDOWS\system32>dir "C:\Program Files (x86)\Windows Kits\10\Lib\10.0.18362.0"
Volume in drive C is OSDisk
Volume Serial Number is EA9A-AF54
Directory of C:\Program Files (x86)\Windows Kits\10\Lib\10.0.18362.0
07/27/2020 12:56 AM <DIR> .
07/27/2020 12:56 AM <DIR> ..
07/27/2020 12:56 AM <DIR> ucrt
07/27/2020 12:56 AM <DIR> ucrt_enclave
07/27/2020 12:56 AM <DIR> um
0 File(s) 0 bytes
so this says we have problems searching for the right dir for ucrt.