xcode如何通过即时客户端的occi连接oracle

我在mac os上安装oracle client已ok，用sqlplus连接oracle没有问题
但是我在xcode调用occi的时候，编译错误，警告信息提示

warning: skipping file '/usr/local/oracle/instantclient_11_2/libclntsh.dylib.11.1' (unexpected file type 'text.man' in Frameworks & Libraries build phase)

warning: skipping file '/usr/local/oracle/instantclient_11_2/libociei.dylib' (unexpected file type 'compiled.mach-o.bundle' in Frameworks & Libraries build phase)

warning: skipping file '/usr/local/oracle/instantclient_11_2/libocci.dylib.11.1' (unexpected file type 'text.man' in Frameworks & Libraries build phase)

warning: skipping file '/usr/local/oracle/instantclient_11_2/libocijdbc11.dylib' (unexpected file type 'compiled.mach-o.bundle' in Frameworks & Libraries build phase)

然后就出现了错误

Showing All Messages

  "oracle::occi::Environment::createEnvironment(oracle::occi::Environment::Mode, void*, void* (*)(void*, unsigned long), void* (*)(void*, void*, unsigned long), void (*)(void*, void*))", referenced from:

      _main in main.o

  "oracle::occi::Environment::terminateEnvironment(oracle::occi::Environment*)", referenced from:

      _main in main.o

  "oracle::occi::SQLException::SQLException(oracle::occi::SQLException const&)", referenced from:

      _main in main.o

  "oracle::occi::SQLException::~SQLException()", referenced from:

      _main in main.o

  "typeinfo for oracle::occi::SQLException", referenced from:

      GCC_except_table0 in main.o

ld: symbol(s) not found for architecture x86_64

求大神指导下怎么解决？

另外mac osx上用objective c都是怎么连接oracle的，作为一个系统，没道理不能直接连接啊？  感谢啊！