Allow multiple calls to REFLEX_GENERATE_DICTIONARY #16256
Description
Explain what you would like to see improved and how.
The CMake function REFLEX_GENERATE_DICTIONARY can only be called once for each CMake target as it generates a file based on the target name.
In CMS code, we allow multiple classes_def*.xml files for each library being created. This has sped up compilation and avoids excessing memory use by the compiler. Because of the restriction in REFLEX_GENERATE_DICTIONARY , my experiments to use CMake to generate some CMSSW code was unable to use that function.
It appears that if REFLEX_GENERATE_DICTIONARY used part of the name of the SELECTION argument for the generate class name it could be possible to have multiple calls to the function for the same target.
ROOT version
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Installation method
from source
Operating system
Linux alma 8
Additional context
No response