cmake _HAVE_PWRITE examples

HDFGroup/hdf5 config/ConfigureChecks.cmake :431 

CHECK_FUNCTION_EXISTS (pwrite            ${HDF_PREFIX}_HAVE_PWRITE)

InsightSoftwareConsortium/ITK Modules/ThirdParty/HDF5/src/itkhdf5/config/cmake/ConfigureChecks.cmake :415 

CHECK_FUNCTION_EXISTS (pwrite            ${HDF_PREFIX}_HAVE_PWRITE)

Tencent/Forward source/third_party/hdf5/config/cmake_ext_mod/ConfigureChecks.cmake :506 

CHECK_FUNCTION_EXISTS (pwrite            ${HDF_PREFIX}_HAVE_PWRITE)

Kitware/VTK ThirdParty/hdf5/vtkhdf5/config/cmake_ext_mod/ConfigureChecks.cmake :448 

CHECK_FUNCTION_EXISTS (pwrite            ${HDF_PREFIX}_HAVE_PWRITE)