pkg-config search path

[Keith Packard]

Around 12 o'clock on Sep 22, Havoc Pennington wrote:

>  - I'm not sure how complicated it is to reconstruct this path
>      using LD_LIBRARY_PATH, ld.so.conf, etc.

That's easy; LD_LIBRARY_PATH is parsed just like the current 
PKG_CONFIG_PATH, and ld.so.conf is just a list of directories; it can't 
get much easier than that.

>  - I'm not sure how much of LD_LIBRARY_PATH/ld.so.conf is 
>      at all portable/standard and kind of suspect the answer 
>      is "none of it"

The list of directories searched can be OS-dependent; extract the relevant 
path from whereever it's stored on the system.  Detecting the presence 
(and utility) of /etc/ld.so.conf should be easy enough.

>  - Owen has raised the issue of arch-independent .pc files 
>      in datadir

Yeah, that would be nice; would .pc files live in /usr/share then?

-keith