CMAKE_COMPILER_IS_GNUG77 ------------------------ .. deprecated:: 3.24 Use the :variable:`CMAKE_Fortran_COMPILER_ID _COMPILER_ID>` variable instead. The ``CMAKE_COMPILER_IS_*`` variables were used in early CMake versions before the introduction of :variable:`CMAKE__COMPILER_ID` variables in CMake 2.6. The ``CMAKE_COMPILER_IS_GNUG77`` variable is set to boolean true if the ``Fortran`` compiler is GNU. Examples ^^^^^^^^ In earlier versions of CMake, the ``CMAKE_COMPILER_IS_GNUG77`` variable was used to check if the ``Fortran`` compiler was GNU: .. code-block:: cmake if(CMAKE_COMPILER_IS_GNUG77) # GNU Fortran compiler-specific logic. endif() Starting with CMake 2.6, the ``CMAKE_Fortran_COMPILER_ID`` variable should be used instead: .. code-block:: cmake if(CMAKE_Fortran_COMPILER_ID STREQUAL "GNU") # GNU Fortran compiler-specific logic. endif()