= Recurrent Problems on Leopard =

== environment variables become blank ==
This manifests as error messages similar to the following.
{{{
unable to execute -DNDEBUG: No such file or directory
}}}
(`$CC` is an empty string, so what was meant to be the the first argument to the compiler is now the first thing on the command line, and is treated as a command name by the shell.)

This issue is resolved in [http://www.macports.org/install.php MacPorts 1.7.0].

== `ld: cycle in dylib re-exports with /usr/X11/lib/libGL.dylib` ==
This is the result of a misfeature in Xcode 3.0.0's linker; see Apple [http://developer.apple.com/qa/qa2007/qa1567.html Technical Q&A QA1567]. This can be fixed by upgrading to the latest [http://developer.apple.com/technology/xcode.html Xcode Tools] release.

== macfuse fails to build ==
On versions of Leopard prior to 10.5.5, macfuse fails to build with the following error message (#15889).
{{{
undefined local variable or method `trans' for <UNDEFINED> ... </>:REXML::Document
}}}
Updating to 10.5.5 or later using Software Update should resolve this issue.

== `/usr/X11/lib/libXrandr.2.0.0.dylib: No such file or directory` ==
This is a problem encountered when trying to install gtk2 on some Leopard machines (#14592, #17008, #17356). The .la files in `/usr/X11/lib` refer to the wrong library. You may also see this problem with other X libraries such as libXdamage.

Upgrading to the latest [http://xquartz.macosforge.org/ Xquartz] release should fix this problem.