Created attachment 212528 [details]
The original SourceForge project has moved to GitHub a while ago, and the port is now broken.
The GitHub code -- unmodified in 18 years (!) -- is almost the same as what the original distfile contained except:
1. No more configure -- only configure.in
2. No more RCS variables in code -- git does not support them.
3. configure.in contains code to find res_query on Cygwin (!), which breaks on
Instead of trying to configure.in -- so that the sole C file can be built with gmake, this patch switches to a bsd.prog.mk.
The corrected version of upstream's rbl.in moves into files/ too -- to be handled by the SUB_FILES-mechanism.
The DOCS-option is removed -- it was never handled properly anyway, and the author does not include useful documentation beyond the program's usage(). Other useless files are omitted too.
Finally, a couple of warnings are fixed in the C-code itself to qualify for WARNS=2.