libfftw3f.a missing

[rspanbauer]

I built sbitx from source this morning, using fftw-3.3.10, raspian bookworm. When I ran the build script,
the link failed:

compiling sbitx version v3.02 in /home/rick/sbitx
/usr/bin/ld: cannot find -lfftw3f: No such file or directory
collect2: error: ld returned 1 exit status

To resolve this, it was necessary to re-configure fftw3 using "./configure --enable-float", then recompile/reinstall.