Undefined symbols for architecture i386:  "_fwrite$UNIX2003", referenced from:      _unixErrorHandler in libcocos2dx iOS.a(tif_unix.o)      _unixWarningHandler in libcocos2dx iOS.a(tif_unix.o)      _empty_output_buffer in libcocos2dx iOS.a(jdatadst.o)      _term_destination in libcocos2dx iOS.a(jdatadst.o)      _Fax3PrintDir in libcocos2dx iOS.a(tif_fax3.o)      _PredictorPrintDir in libcocos2dx iOS.a(tif_predict.o)  "_strerror$UNIX2003", referenced from:      _TIFFOpen in libcocos2dx iOS.a(tif_unix.o)ld: symbol(s) not found for architecture i386clang: error: linker command failed with exit code 1 (use -v to see invocation)

Undefined symbols for architecture x86_64:  "_opendir$INODE64", referenced from:      _OPENSSL_DIR_read in libcocos2dx iOS.a(o_dir.o)  "_readdir$INODE64", referenced from:      _OPENSSL_DIR_read in libcocos2dx iOS.a(o_dir.o)ld: symbol(s) not found for architecture x86_64clang: error: linker command failed with exit code 1 (use -v to see invocation)

extern "C"{         //新增代码#if defined (__unix) || (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)#ifndef __ENABLE_COMPATIBILITY_WITH_UNIX_2003__#define __ENABLE_COMPATIBILITY_WITH_UNIX_2003__#include <stdio.h>#include <dirent.h>    FILE *fopen$UNIX2003( const char *filename, const char *mode )    {        return fopen(filename, mode);    }    size_t fwrite$UNIX2003( const void *a, size_t b, size_t c, FILE *d )    {        return fwrite(a, b, c, d);    }    char *strerror$UNIX2003( int errnum )    {                 return strerror(errnum);    }         DIR *opendir$INODE64(const char * a)    {        return opendir(a);    }         struct dirent *readdir$INODE64(DIR *dir)    {        return readdir(dir);    }     #endif#endif}