Hello

Thank you for the report - and for providing all the info. Indeed I see that a "-framework null" argument is passed to the linker. This is clearly a bug. I suspect it's generated by pbxprojparse.exe, but right now I'm unable to tell where the problem could be and I'd like to study that more closely. Could you send me the Xcode project directory for analysis ? You can delete the "build" subdirectory to save space. Confidentiality is guaranteed of course.

Thanks in advance,

Yes, I received it, thank you.

Well, it does look like your Xcode project file is bogus. See line 126:

% Unity-iPhone.xcodeproj\project.pbxproj
		702641D8836EE483395489CD /* null.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 60A34832B960B3FC7D3B0D6C /* null.framework */; };
%

So, it turned out the builder isn't inventing it... the Xcode project file does mention a framework called "null", which it claims can be found among the default iOS frameworks. The problem is, to my knowledge, no such framework exists.

I think you should report this error to the Unity team.