When compiling kdeaddons with vorbis support enabled, I get the following: bin/sh ../../../libtool --silent --mode=link --tag=CXX g++ -Wnon-virtual-dtor -Wno-long-long -Wundef -Wall -pedantic -W -Wpointer-arith -Wmissing-prototypes -Wwrite-strings -ansi -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -Wcast-align -Wconversion -DNDEBUG -DNO_DEBUG -O2 -march=pentium3 -Os -pipe -fschedule-insns2 -fmove-all-movables -frename-registers -finline-functions -fno-exceptions -fno-check-new -DQT_CLEAN_NAMESPACE -DQT_NO_COMPAT -DQT_NO_ASCII_CAST -o konqsidebar_mediaplayer.la.closure konqsidebar_mediaplayer_la_closure.lo -module -avoid-version -module -no-undefined -R /usr/kde/3.1/lib -R /usr/qt/3/lib -R /usr/X11R6/lib -L/usr/X11R6/lib -L/usr/qt/3/lib -L/usr/kde/3.1/lib engine.lo player.lo mediawidget.lo mediaplayer.lo controls.lo mediawidget_skel.lo -lkparts -lkio -lkonqsidebarplugin -lqtmcop -lkmedia2_idl -lsoundserver_idl -lartskde libtool: link: cannot find the library `/usr/lib/libvorbis.la' make[5]: *** [konqsidebar_mediaplayer.la.closure] Error 1 make[5]: Leaving directory `/var/tmp/portage/kdeaddons-3.1/work/kdeaddons-3.1/konq-plugins/sidebar/mediaplayer'
Changing my /etc/make.conf USE setting to -oggvorbis (or removing the oggvorbis setting) does not allow kdeaddons to be compiled.
Reemerging libvorbis (currently with my -oggvorbis setting in /etc/make.conf) produced the libvorbis.la file and allowed kdeaddons to compile.
it was a portage error