cmake PG should ensure correct libdir, otherwise ports are broken on linux

[Fred Wright]

On Tue, 17 Sep 2024, Fred Wright wrote:
> On Tue, 17 Sep 2024, Ken Cunningham wrote:
>
>> Of course, if you over-write 64 bit libs with 32 bit libs of the same name, 
>> or vice versa, in the same location, you are just hosed, ldconfig or no 
>> ldconfig.
>> 
>> Which is why linux has the lib32 and lib64 subfolders iin the first place.
>
> I don't disagree, but OP claimed that Linux never looks in lib64, which I 
> suspect is just an artifact of failing to run ldconfig.

And just to clarify, I'm saying that running ldconfig *instead of* messing 
with libdir is probably the correct fix.

Fred Wright