libtool: link: `/usr/lib64/libGL.la' is not a valid libtool archive
make[3]: *** [libglitz-glx.la] Error 1
make[3]: Leaving directory `/var/tmp/portage/glitz-0.5.6/work/glitz-0.5.6/src/glx'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/var/tmp/portage/glitz-0.5.6/work/glitz-0.5.6/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/var/tmp/portage/glitz-0.5.6/work/glitz-0.5.6'
make: *** [all] Error 2

!!! ERROR: media-libs/glitz-0.5.6 failed.
Call stack:
  ebuild.sh, line 1543:   Called dyn_compile
  ebuild.sh, line 938:   Called src_compile
  ebuild.sh, line 607:   Called die

!!! emake failed
!!! If you need support, post the topmost build error, and the call stack if relevant.