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 CMAKE_GHS_NO_SOURCE_GROUP_FILE is ON then only a single project file is generated for the target.
Supported on Green Hills MULTI.
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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.17/prop_tgt/GHS_NO_SOURCE_GROUP_FILE.html