When trying to emerge dev-qt/qtwebkit-5.9999 I am getting lot of undefined references (see attachment), gcc x86_64-pc-linux-gnu-4.7.2 CFLAGS="-march=native -O2 -pipe -flto -fuse-linker-plugin -flto=4 MAKEOPTS="-j5" LDFLAGS="${LDFLAGS} -flto -fuse-linker-plugin -flto=4" (I tried without lto, but didn't help)
Created attachment 343444 [details] build log
Created attachment 343446 [details] emerge --info '=dev-qt/qtwebkit-5.9999'
Can you try again? I believe this was just a transient upstream failure.
This was result of using LTO in gcc, I am not using it anymore
Ok, LTO is unsupported therefore I'm closing as invalid.