William Kent 3464df8c28 [CMAKE] Search the PATH for the compilers and cache the results ...

We are deliberately using a macro here instead of REQUIRED parameter
because it is available only in CMake 3.18+, so it won't work with
CMake version that is being shipped with RosBE.

On my dev box the RosBE tools are only in the PATH when needed.
Since my IDE inherits the PATH from the system and not from my shell,
I needed to be able to run configure.sh with the tools in my PATH
and then be able to successfully reconfigure when building
from a "regular" command prompt.

2022-05-25 16:34:16 +03:00

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