"_OBJC_CLASS_$_FGalleryViewController", referenced from:
<p>Undefined symbols for architecture i386:
  "_OBJC_CLASS_$_FGalleryViewController", referenced from:
      objc-class-ref in Home.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)</p>
