Created attachment 3933 [details] diffoscope output that corroborates the claim. libperl5 package contains references to the host build system, via ccflags in /usr/lib/perl/config.sh and /usr/lib/perl/5.24.1/Config_heavy.pl. The fix should be simply to filter out DEBUG_PREFIX_MAP from the above mentioned files somewhere in do_install.
fixed by: http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=48fee62075e3efe5869003be34e1909991962a23