GHS_NO_SOURCE_GROUP_FILE
------------------------

``ON`` / ``OFF`` boolean to control if the project file for a target should
be one single file or multiple files.

The default behavior or when the property is ``OFF`` is to generate a project
file for the target and then a sub-project file for each source group.

When this property is ``ON`` or if :variable:`CMAKE_GHS_NO_SOURCE_GROUP_FILE`
is ``ON`` then only a single project file is generated for the target.

Supported on :generator:`Green Hills MULTI`.
