Hopefully the title should be self explanatory - I have done a quick mirror and RESTRICT="primaryuri" to make the ebuild work for now. When forward porting there was a new section for handling the Client, the rest is the same though.
Created attachment 82104 [details] mDNSResponder-107.5.ebuild
Created attachment 82105 [details, diff] mDNSResponder-107.5-Makefiles.patch
*** Bug 125985 has been marked as a duplicate of this bug. ***
Thanks for reporting, I've done a few more changes actually, now the package will work with FEATURES=stricter as it uses gcc instead of ld to link, and it uses the right names for the current CHOST so that it should be crosscompile safe, it also respect CFLAGS and LDFLAGS. Thanks for the forwardported patch, too :)