I get these exact same compile errors in strequal.h when compiling in Xcode.
rhodes 5.0.25. (Also had the same errors with 5.0.2.)
It seems like others are able to compile successfully with rhodes 5.0.2 and Xcode 6. Any ideas?
I believe that build in Xcode GUI is currently not supported for iOS. You can use command-line, though. See the blog and release notes. I never build that way (only command line) so cannot say if it work in my installation.
Also, if you are using any Rhodes 5.x to build with Xcode 6.1.1, then you really ought to be using Rhodes 5.0.25, since it has had quite a few changes related to iOS/XCode6 build.