GDB 8.3.1 gdbserver linker error: needs -lrt

[Eli Zaretskii]

> From: Paul Smith <psmith@gnu.org>
> Cc: gdb@sourceware.org
> Date: Fri, 31 Jan 2020 11:48:49 -0500
> 
> > Any reason why we don't use pkg-config for finding out these
> > dependencies?
> 
> I'm not sure how pkg-config helps in this situation... isn't pkg-config 
> used for obtaining correct options for using another package?
> 
> In this case, we need a new library to link gdbserver directly, not
> because of some other package that gdbserver depends on, so we don't
> have a package that might contain a pkg-config we could use.

Sorry, I thought liblzma needed -lrt.  Apologies if I was confused.