Undefined symbols for architecture x86_64: "_sqlite3_close", referenced

I'm new to objective-c and am getting this error when I add from sqlite3 calls in xcode. Any one know what I can do to fix this error?

Undefined symbols for architecture x86_64:
  "_sqlite3_close", referenced from:
      -[InAppUtils get:] in libInAppUtils.a(InAppUtils.o)
  "_sqlite3_exec", referenced from:
      -[InAppUtils get:] in libInAppUtils.a(InAppUtils.o)
  "_sqlite3_open", referenced from:
      -[InAppUtils get:] in libInAppUtils.a(InAppUtils.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

I tried adding the libsqlite3.dylib library but I can't find it on my system. Is it required? If so, how do I find it?