ISPC_HEADER_SUFFIX ------------------ .. versionadded:: 3.19.2 Specify output suffix to be used for ISPC generated headers provided by the target. This property is initialized by the value of the :variable:`CMAKE_ISPC_HEADER_SUFFIX` variable if it is set when a target is created. If the target contains ISPC source files, this specifies the header suffix to be used for the generated headers. The default value is ``_ispc.h``.