re: cvs compile error on macOS 10.15.2 Catalina

[Rob Whitlock]

I just ran into the same problem and I found what seems to be a fix.

The issue comes because stdio.h declares its own getline function, and that 
function has a slightly different signature than what cvs declares it as. Also, 
since libc already defines getline, when we get to the cvs definition for 
getline, we get an error, because there are two definitions for the same 
function. I got past this by simply commenting out the getline declaration in 
cvs-1.11.23/lib/getline.h and the getline definition in 
cvs-1.11.23/lib/getline.c.

After this modification, cvs seems to compile and run fine.