Note that it hung during the compile using the nvidia drivers for opengl. But when using the xorg-x11 drivers, it did compile. But with the following message which may be of interest to you.
>>> Completed installing webkit-gtk-2.4.4-r200 into /var/tmp/portage/net-libs/webkit-gtk-2.4.4-r200/image/
strip: x86_64-pc-linux-gnu-strip --strip-unneeded -R .comment -R .GCC.command.line -R .note.gnu.gold-version
ecompressdir: bzip2 -9 /usr/share/doc
* QA Notice: Package triggers severe warnings which indicate that it
* may exhibit random runtime failures.
* Please do not file a Gentoo bug and instead report the above QA
* issues directly to the upstream developers of this software.
* Homepage: http://www.webkitgtk.org/
In trunk and on 2.4 we're building with -fno-strict-aliasing, so this error shouldn't pop up. That is, unless the optimization is re-enabled by -O2 or -O3 or directly later in the compiler command -- that would enable the warning.
This is caused by the following generated code (see
operator RefPtr<%s>& ()
COMPILE_ASSERT(STATE == AllFieldsSet, result_is_not_ready);
COMPILE_ASSERT(sizeof(%s) == sizeof(Inspector::InspectorObject), cannot_cast);
As Žan mentioned, -fno-strict-aliasing should prevent that
warning. Are you using it?