When fuzzing a target library, do we need to instrument its dependent libraries as well?

[Just-do-st]

Hi,

When fuzzing a target library, do we need to instrument its dependent libraries as well? It seems that the build.sh script in the ffmpeg project is influenced by the environment variables $CC and $CXX, which cause the dependent libraries to be instrumented. However, intuitively, it seems that we only need to test the implementation of the target library itself.

Thanks,

Steven