[CMake] FindX11 vs. Lion

[Randolph M. Fritz]

On 2012-08-21 20:00:44 +0000, Clifford Yapp said:

> On Tue, Aug 21, 2012 at 2:38 PM, Randolph M. Fritz 
> <RFritz at lbl.gov> wrote:
> 
>> What problems did your solutions address?  I've skimmed them, but am not
>> sure I understand them.  I'd also be interested in hearing from anyone else
>> who has done this, and even people who have done it on Windows systems.
> 
> In our specific case, the problem was "we have a Mac with both a
> system X11 and a MacPorts/Fink X11 - mixing and matching is Not Good,
> so get FindX11 to avoid mixing them."

It's a variant of the same problem I'm having.

> The basic idea is to forbid CMake from searching Fink/MacPorts paths
> for libraries if they are disabled.  […]

I did something much simpler; on my Mac running I constrained the 
searches to look in /usr/X11.  Unfortunately, I doubt this will work on 
all versions of MacOS.

This could be extended by providing a variable which told the scripts 
where to look, so that, if I want a build which used the Fink or 
MacPorts X11, I would specify that path.

Am I correct that the find_library command does not search the paths in 
the order given?  Or do I misunderstand it?

On another subject, is there a convention for specifying features that 
I may or may not want built?  Say, use Qt or not?
-- 
Randolph M. Fritz • RFritz at lbl.gov
Environmental Energy Technologies Division • Lawrence Berkeley Labs