Change OS X deployment target from 10.6 to 10.5 clang error

Question

I am trying to change my OS X project deployment target but i keep getting this error and my build fails.

clang: error: -fobjc-arc is not supported on current deployment target
Command/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 1

I have no clue what this means or what I have to do.

Answer 1

This means you need to disable ARC in order to support MacOS 10.5. The oldest version of MacOS that works with ARC is 10.6 .

Turning off ARC might be pretty tough for a developer to do, especially depending on the size of your project, since that means you have to put in a bunch of brand new " retain " and " release " calls for potentially a boatload of objects.