provide proper barebones compiler defines for selfcheck and daca#4954

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firewave wants to merge 1 commit intodanmar:mainfrom

firewave:self-def

Commits on Nov 12, 2025

provide proper barebones compiler defines based on GCC 10.2.1 (the Debian bullseye compiler) for selfcheck and daca / removed unnecessary checks for `__CPPCHECK__` [skip ci]
firewave
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