[CMake] setting other compile flag for 1 source file

[Cees Wesseling]

Hi,

On a large project I am running into a possible optimization bug in gcc.
I nailed the problem down to 1 source file. To bypass the problem I want
to compile the offending source file, with no optimization instead of
the default settings for release mode.

Is there already a mechanism for that in cmake that I can't find or do I
just have to build a custom rule for that file?

Any hints how to do this most efficiently are appreciated.

Thanks, Cees