The meta/classes/linuxloader.bbclass is used by various things to specify the proper name of the ld.so for a given architecture.

It does not currently have 'mips64' entries, so:

    dynamic_loader="/unknown_dynamic_linker"

is returned.

This can cause problems with mklibs or prelinking.

For a list of the available linkers:

https://sourceware.org/glibc/wiki/ABIList#mips

It should be possible to change the scan to just do something like:

 		powerpc | microblaze )
 			dynamic_loader="${base_libdir}/ld.so.1"
 			;;
		mipsisa32r6el | mipsisa32r6 | mipsisa64r6el | mipsisa64r6)
			dynamic_loader="${base_libdir}/ld-linux-mipsn8.so.1"
                        ;;
		mips*)
 			dynamic_loader="${base_libdir}/ld.so.1"
 			;;

(Note the mipsisa* entries come from a patch recently submitted to the oe-core-devel