Created attachment 594046 [details] build.log Cross compile bug with already created PR: https://bugs.freedesktop.org/show_bug.cgi?id=111126
I just realized now that after updating multilib directory with unsymlink-lib there are missing .pv files in /usr/lib/pkgconfig such as vdpau.pc. This only appears in /usr/lib64/pkgconfig. Cloud be the reason for this issue, but I'm compiling all packages for abi_x86_32. I'll leave here new comment if it's the solution.
equery f x11-libs/libvdpau | grep vdpau.pc /usr/lib32/pkgconfig/vdpau.pc /usr/lib64/pkgconfig/vdpau.pc /usr/lib32/pkgconfig/vdpau.pc is not installed and it shoud be... unsymlink-lib script didn't work as expected after finish operation.
Problem solved after recompiling libvdpau.