ELPA tends to pull in OpenMP

Description

Currently ELPA is being searched with find_package(ELPA MODULE OPTIONAL_COMPONENTS OpenMP) which uses pkg-config to find elpa_openmp.pc or, if that is not found, elpa.pc. However, in elpa_openmp.pc there is a hardcoded -fopenmp which then propagates into the compiler and linker flags of the Octopus targets. To prevent that we only add COMPONENTS OpenMP when OCTOPUS_OpenMP is enabled.

Checklist

• I have checked that my code follows the Octopus coding standards
• I have added tests for all the new features added in this request.

requested review from @VileLasagna

assigned to @hmenke

requested review from @martin.lueders

added 1 commit

• 9338d4ea - ELPA tends to pull in OpenMP

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approved this merge request

requested review from @nicolastd

enabled an automatic merge when all merge checks for 9338d4ea pass

merged

mentioned in commit afcd2ed8

added Build System label

changed milestone to %16.0

added in Changelog label