I don't know what is the Gentoo-soname policy, but one can read here Debians (http://www.netfort.gr.jp/~dancer/column/libpkg-guide/libpkg-guide.html#sonames) and after a little bit of exploration, I found a couple of packages with broken sonames. I'll file bugs for all of them with the corresponding patches. The information in the SONAME-field could be used for automatic reverse-dependancies retrieval and so on, without the use of ld-linux.so interpreter (which BTW has serious security implications - possibility for code execution - http://www.tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html#AEN115). There is also a patch for the makefile(from http://cvs.pld-linux.org/cgi-bin/cvsweb/SOURCES/mDNSResponder-soname.patch?rev=1.1), which I have changed to apply on gentoo, which solves this problem for me.
Created attachment 63072 [details, diff] A patch for the soname-field Patch which will set the correct SONAME field in the shared libraries.
mDNSResponder-107.1 should have this issue fixed. Make sure you submit your changes to apple developers, thanks!
