This is a CMake Environment Variable. Its initial value is taken from the calling process environment.
Default compilation flags to be used when compiling
Fortran files. Will only be used by CMake on the first configuration to determine
Fortran default compilation flags, after which the value for
FFLAGS is stored in the cache as
CMAKE_Fortran_FLAGS. For any configuration run (including the first), the environment variable will be ignored if the
CMAKE_Fortran_FLAGS variable is defined.
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