Reported upstream on https://github.com/FFTW/fftw3/issues/182 , with some luck they have an idea about the bug
** Bug watch added: github.com/FFTW/fftw3/issues #182 https://github.com/FFTW/fftw3/issues/182 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1843733 Title: fftw3 ftbfs in eoan (armhf only) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fftw3/+bug/1843733/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs