Well, I've finally made it to QGIS in my Lion upgrade.  QGIS compiled for Snow 
Leopard seems to work fine on Lion, though it will continue to use Python 2.6.  
As for Lion compilation and use, some notes...

- default llvm compiler seems to work fine.

- git is now installed with Xcode.

- (not really Lion-only - all OSX versions) cmake 2.8.5 is broken for detecting 
Qt4 frameworks.  Fixed in dev, so until 2.8.6 is released use 2.8.4.

- Apple dropped libfcgi and mod_fastcgi from their distribution, so anyone that 
wants to use the QGIS mapserver needs to install them separately.  I'll try to 
do something in my QGIS packages.  Is fastcgi an absolute technical 
requirement, other than just for performance?  Can the code be adjusted to run 
as a normal cgi?

- Python 2.7 in Lion!

- QGIS compiles with Qt 4.7.3, but there are harmless warnings about not being 
supported on Lion.  No problems at runtime.

For future packages I have a plan described on my site news.  Briefly: one 
package to work on both Snow Leopard and Lion (with python 2.6/2.7 switching 
based on system version), one package for Leopard until all the PPC Macs where 
I work are replaced (not that we really use QGIS much), maybe sooner if 
maintaining a Leopard dev Mac becomes too troublesome.

I may start using an installer package for 1.8 dev and beyond.  I'm still 
trying to figure out if I can bundle osg[earth] (issue locating bundled osg 
plugins).  I would need an installer to install osg outside the QGIS 
application.  An installer may also be needed to switch pythons for the system 
version.  This would also make it possible to create an all-in-one installer, 
though the parts would be installed in a couple different locations.

-----
William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
http://www.kyngchaos.com/

"This is a question about the past, is it? ... How can I tell that the past 
isn't a fiction designed to account for the discrepancy between my immediate 
physical sensations and my state of mind?"

- The Ruler of the Universe


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