Hi All,
It is easy to compile libraries which do not implement ARC yet, (e.g.
SBJson) into your projects which implement 5.0 SDK.
Just change the compiler flags for the specific code files that you do
not want to enable ARC for to "-fno-obj-arc".
Also, it is a relatively painless process to convert your old code to
make it compatible with ARC using the 'Refactor' tool in XCode. Both
processes are explained in detail in the link mentioned below.
http://maniacdev.com/2012/01/easily-get-non-arc-enabled-open-source-libraries-working-in-arc-enabled-projects/
I hope you find this information useful.
Regards,
Azeem