[Cmake] Linux.cmake error

[Glen Lehmann]

Hi all,
I run a crontab that builds my nightly cmake and vtk's and I started to 
get this error on Saturday night;

System is unknown to cmake, create:
/usr/local/CMake/Modules/Platform/Linux.cmake to use this system, please 
send your config file to cmake at www.cmake.org so it can be added to cmake"

I'm running red hat 8.0.

Glen