This is the relevant line:
checking for wxWidgets version >= 2.6.0... no (version 2.5.2 is not new enough)
You don't have any wxWidgets at all or a version that is too old.
These lines
checking that wxWidgets has support for large files... no
configure: error:
Support for large files in wxWidgets is required by aMule.
To continue you must recompile wxWidgets with support for
large files enabled.
can be simply ignored. They are misleading because missing large file support is not the real problem here.
Large file support is the default for most wxWidgets port on systems with glibc >= 2.1, but I don't know about wxBase.
EDIT: This is already changed in current CVS, sorry for not looking at it earlier. The configure output is more intuitive now.