We need to have USE=static-libs because this package install '.a' files: /usr/lib64/libxdiff.so.0.0.0 /usr/lib64/libxdiff.la /usr/lib64/libxdiff.so.0 /usr/lib64/libxdiff.so /usr/lib64/libxdiff.a
I do not see a reason to have static libs supported. I would prefer to it disabled altogether
Revbump with --disable-static and removal of .la file in CVS