Ninja with XL Fortran
When using the Ninja generator with XLF I get the following error:
CMake Error: Error required internal CMake variable not set, cmake may not be built correctly. Missing variable is: CMAKE_Fortran_PREPROCESS_SOURCE CMake Error at /path/to/cmake/CMakeTestFortranCompiler.cmake:30 (try_compile): Failed to generate test project build system.
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