The Intel Classic 2021 compiler version numbers are now detected correctly as having major version 2021. CMake 3.20.1 and below were not aware of a change to the identification macro version scheme made by Intel starting in version 2021, and detected the version as 20.2.
The Intel oneAPI Fortran compiler is now identified as IntelLLVM. The oneAPI 2021.1 Fortran compiler is missing an identification macro, so CMake 3.20.1 and below identified it as Intel. CMake now has a special case to recognize oneAPI 2021.1 Fortran as IntelLLVM. The oneAPI 2021.2 Fortran compiler defines the proper identification macro and so is identified as IntelLLVM by all CMake 3.20 versions.
3.20.2
(upgrade should not concern blfs)