As per summary, check attached build log.
Created attachment 194382 [details] Build log
Created attachment 194391 [details] fix for gcc-4.4 Please try with that applied.
Mrhfp; if that works for you, it should probably go into 0.10.1-missing-includes.patch
that patch works for me - it compiled successfully ;) thanks Łukasz !
+ 25 Jul 2009; Samuli Suominen <ssuominen@gentoo.org> log4cxx-0.10.0.ebuild, + +files/log4cxx-0.10.0-gcc44.patch: + Fix building with GCC 4.4 wrt #273843, thanks to Łukasz Michalik.