...
git clone ~winger/gem/v_5.1.1/Abs/UQAM_development_FLake_CLASSlatest/gem
then change into 'gem' directory that came with the clone:
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In project/Linux-x86_64-intel.cmake change in line 24 '-fp-model source' to '-fp-model precise' (Vivian) resp. '-fp-model strict' (Ron).
precise | Disables optimizations that are not value-safe on floating-point data. |
strict | Enables precise and except, disables contractions, and enables pragma stdc fenv_access. |
source | Rounds intermediate results to source-defined precision. |