cmake _HAVE_FLOCK examples

HDFGroup/hdf5 config/ConfigureChecks.cmake :424 

CHECK_FUNCTION_EXISTS (flock             ${HDF_PREFIX}_HAVE_FLOCK)

InsightSoftwareConsortium/ITK Modules/ThirdParty/HDF5/src/itkhdf5/config/cmake/ConfigureChecks.cmake :408 

CHECK_FUNCTION_EXISTS (flock             ${HDF_PREFIX}_HAVE_FLOCK)

Tencent/Forward source/third_party/hdf5/config/cmake_ext_mod/ConfigureChecks.cmake :492 

CHECK_FUNCTION_EXISTS (flock             ${HDF_PREFIX}_HAVE_FLOCK)

Kitware/VTK ThirdParty/hdf5/vtkhdf5/config/cmake_ext_mod/ConfigureChecks.cmake :441 

CHECK_FUNCTION_EXISTS (flock             ${HDF_PREFIX}_HAVE_FLOCK)