See attached build log. (Please do not complain about the need for looking at the build log until you can provide an easy way to open bugs with the correct data picked out of a tinderbox log. Thanks.)
Created attachment 245346 [details] Build log
You can fix this issue adding a src_compile function to the ebuild and calling emake with LDOPTS="${LDFLAGS}".
fixed in 1.26-r1