Is it feasible to maintain an older lib to compile a certain port?
I wanted to update ngrep 1.45 (sourceforge) to 1.46 (github) and tried compiling in a system that had an older version of libpcap, 1.7.4 (current is 1.8.1). It worked only without the patches. It's far from ideal, but it has no maintainer and it hasn't been updated in a while, so I just thought, I might give it a try.