I haven't tried running it, but it builds fine if you comment out the nsl bits in CMakeLists.txt

So do you think the requirement is obsolete?

I take it back, it built because I have libnsl installed. libnsl provides NIS/YP, and this is used in ntirpc in several places, so it is, indeed, necessary.

Is there any way we can make libnsl optional for installations that don't use NIS/YP?

I removed the libnsl detection from CMakesLists and i was able to build. I cross compiled as an easy way to make sure my machine did not contaminate the build.

I searched for inclusion of headers from libnsl and

git grep -l rpcsvc
cmake/modules/FindNSL.cmake
man/publickey.3t
src/getpublickey.c
src/getrpcent.c
src/netname.c
src/netnamer.c

But from my compilation log some of these files are not compiled and the ones that are already have a #ifdef YP. So i guess we can just add the #ifdef YP to the remaining files just in case they are built in a configuration i maybe missing.

Patch submitted in pull request #255

NIS（Network Information Service）, which manages accounts for other Linux hosts. Originally, it was known as Sun Yellow Pages (abbreviated as yp). Nowadays, it has largely been replaced by LDAP and is not of much use anymore.

So, I'm wondering if there are still some scenarios where the NIS service is needed.

The patch was submitted over two years ago and has not been merged. Is this still an issue? Can we close it?