Same kind of problem has with bug #455512 the libraries are moved from usr/lib to lib by gen_ld_script and if you enable minizip it end up being linked to a library that has been moved and corrected during the install phase. I got a fix for it.
Created attachment 337970 [details]
ebuild fixing libminizip*.dylib
Here is an ebuild that include a fix for libminizip*.dylib.
Created attachment 352302 [details]
ebuild fixing the minizip dylib problem
This is a better ebuild to take care of the dylib problem. minizip install is put in a separate function that can then get called before gen_usr_ldscript.
Thanks! I've committed your patch