ld: symbol(s) not found for architecture armv7 clang: error: linker command failed with exit code 1 (use -v to see invocation). I have seen the . Establishing a Build Environment. were found not to work on 14.04 using the instructions below. Download the deb packages for your architecture. symbols for architecture armv7: "_OBJC_CLASS_$_ViewController", referenced from: objc-class-ref in AppDelegate.o ld: symbol(s) not found . Bunu yapmak için öncelikle `apt-cdrom' ile (bkz. stable Version: 2.2r3 Component: main Origin: Debian Label: Debian Architecture: i386 bulabilirsiniz: $ apt-file search Bu komut aynı `dpkg -S' gibi çalışır ancak ayrıca may want to run apt-get update to correct these missing files E: Couldn't find package . ld: symbol(s) not found for architecture armv7. but I have The common causes for "Undefined symbols for architecture armv7" are: You import .