how about a 'snowleopardfixes' library port?

[Ryan Schmidt]

On Aug 23, 2016, at 12:00, Ken Cunningham <ken.cunningham.webuse at gmail.com> wrote:

>> 
>> Maybe, if you can make a dylib out of it.
> 
> 
> Hmmm. Making the dylib wasn't too hard:
> 
> clang -dynamiclib -std=gnu99 strnlen.c getline.c -current_version 1.0 -compatibility_version 1.0 -o libsnowleopardfixes.a.dylib
> 
> 

> dyld: Library not loaded: libsnowleopardfixes.a.dylib
>  Referenced from: /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_sysutils_lnav/lnav/work/lnav-0.8.1/./conftest
>  Reason: image not found

You haven't set the library's install_name to the absolute path where it is installed. 

I would prefer you work with the developers of the affected software packages to get the necessary compatibility functions into their sources. This will help all Snow Leopard users, not just those using MacPorts.