We need to have USE=static-libs because this package install '.a' files: /usr/lib64/libfontconfig.a /usr/lib64/libfontconfig.la /usr/lib64/libfontconfig.so /usr/lib64/libfontconfig.so.1 /usr/lib64/libfontconfig.so.1.4.4 /usr/lib64/pkgconfig/fontconfig.pc
sorry for the spam, is already fixed.