NVHPC: nvfortran COMPILE_WARNING_AS_ERROR fails with Ninja

CMake 3.24 added CMAKE_COMPILE_WARNING_AS_ERROR. This works for NVHPC + Unix Makefiles, but does NOT work for NVHPC + Ninja for nvfortran Fortran compiler. -Werror all-warnings is emitted which errors compilation with Ninja and nvfortran, but Make can handle it.

It appears the proper syntax for this flag is -Werror=all-warnings, which does work with Ninja and nvfortran.

Despite nvfortran --help | grep Werror matching nvc etc. it seems nvfortran is stricter in combination with Ninja.

Edited Apr 04, 2023 by scivision

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