cmake HAVE_LOCKF examples

USNavalResearchLaboratory/norm CMakeLists.txt :21 

check_cxx_symbol_exists(lockf "unistd.h" HAVE_LOCKF)

USNavalResearchLaboratory/norm CMakeLists.txt :23 

list(APPEND PLATFORM_DEFINITIONS HAVE_LOCKF)

DCMTK/dcmtk CMake/GenerateDCMTKConfigure.cmake :537 

CHECK_FUNCTION_EXISTS(lockf HAVE_LOCKF)