I noticed that ed25519 do not need blake2b. A temporal solution was to remove the object "libsodium_la-blake2b-ref.o" from libsodium.a by using

ar dv libsodium.a libsodium_la-blake2b-ref.o

I can not remove "qcryptographichash.cpp.o" from libQt6Core.a because I use that on other libraries.