if (CMAKE_SYSTEM_NAME STREQUAL "SunOS")
    #
    # Determine if the host is running an illumos distribution:
    #
    execute_process(COMMAND /usr/bin/uname -o OUTPUT_VARIABLE UNAME_O
        OUTPUT_STRIP_TRAILING_WHITESPACE)

    if (UNAME_O STREQUAL "illumos")
        set(ILLUMOS 1)
    endif()
endif()
