We need to have USE=static-libs because this package install '.a' files: /usr/lib64/libsamplerate.a /usr/lib64/libsamplerate.la /usr/lib64/libsamplerate.so /usr/lib64/libsamplerate.so.0 /usr/lib64/libsamplerate.so.0.1.7 /usr/lib64/pkgconfig/samplerate.pc
sorry for the spam, is already fixed.