When building with --use-external-libs on Fedora, Ardour would fail at
runtime with messages like:
symbol lookup error: .../vamp/libardourvampplugins.so: undefined symbol: kiss_fftr_alloc
Try to automate handling of this error situation.
Fedora packaging worked around it with a custom patch that we rather
would avoid:
https://src.fedoraproject.org/rpms/ardour6/blob/rawhide/f/ardour6-missing-kissfft.patch .
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