I have just updated my Xcode to 5.1.1 and I am unable to build my project. Xcode gives this error
clang: error: unknown argument: '-fno_objc_arc' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang failed with exit code 1