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iOS开发笔记之五——Xcode 6.0 Beta编译工程时可能遇到的问题及参考解决方案

article 2025/9/11 10:03:01

由于开发需要，最近需要将Xcode 由5.0升级到6.0 beta版，将MAC升级到10.9.4版本后。利用Xcode 6.0编译我们的项目工程，

发现错误累累，经过一步步摸索，问题最终一一解决；现在将问题记录下来，以供参考。

（1）"_fwrite$UNIX2003"报错问题；

Undefined symbols for architecture i386:
"_fwrite$UNIX2003", referenced from:
      _voAWB_dtx_enc_reset in libvo-amrwbenc.a(dtx.o)
      _voAWB_dtx_enc_init in libvo-amrwbenc.a(dtx.o)
      _wb_vad_reset in libvo-amrwbenc.a(wb_vad.o)
      _wb_vad_init in libvo-amrwbenc.a(wb_vad.o)
      _quant_5p_5N in libvo-amrwbenc.a(q_pulse.o)
      _quant_4p_4N in libvo-amrwbenc.a(q_pulse.o)
      _quant_6p_6N_2 in libvo-amrwbenc.a(q_pulse.o)
      ...
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

对照错误来看，这是一个库链接的错误。

参考解决方案：工程内新增文件 fileadp.c 内容如下：

#include <stdio.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);
    }

stackOverflow上有解释如下：

The UNIX™ conformance variants use the $UNIX2003 suffix.

Important: The work for UNIX™ conformance started in Mac OS 10.4, but was not completed until 10.5. Thus, in the 10.4 versions of libSystem.dylib, many of the conforming variant symbols (with the $UNIX2003 suffix) exist. The list is not complete, and the conforming behavior of the variant symbols may not be complete, so they should be avoided.

Because the 64-bit environment has no legacy to maintain, it was created to be UNIX™ conforming from the start, without the use of the $UNIX2003 suffix. So, for example, _fputs$UNIX2003 in 32-bit and _fputs in 64-bit will have the same conforming behavior.

看样子是64位上遗留的符号命名问题。

（2）在我们的工程项目有专业版和企业版之分，在编译企业版时，可能还会出现如下报错：

Undefined symbols for architecture i386:
"std::istream::gcount() const", referenced from:
      sq::InSmallFile::readBuf(void*, int) in libTF.a(IOFile.o)
"std::string::find_last_of(char, unsigned long) const", referenced from:
      getFileNameFromPath(std::string) in libTF.a(FileSrvClient.o)
"std::string::data() const", referenced from:
      sqnet::StringPiece::StringPiece(std::string const&) in libTF.a(TcpConnection.o)
      Result(boost::shared_ptr<TranFilePara_>&) in libTF.a(sqfilesrvlib.o)
      sqnet::StringPiece::StringPiece(std::string const&) in libTF.a(_auto_filesrv_msg.o)
      sqnet::StringPiece::StringPiece(std::string const&) in libTF.a(FileSrvClient.o)
      sqnet::StringPiece::StringPiece(std::string const&) in libTF.a(FileSrvMsgCodec.o)
      sq::InSmallFile::InSmallFile(std::string) in libTF.a(IOFile.o)
      sq::OutSmallFile::OutSmallFile(std::string) in libTF.a(IOFile.o)
      ...
"std::string::find(char const*, unsigned long) const", referenced from:
      zxing::aztec::Decoder::getEncodedData(zxing::Ref<zxing::BitArray>) in libTF.a(Decoder-387E8B3BE4AFD07D.o)
"std::string::size() const", referenced from:
      sqnet::LogStream::operator<<(boost::thread::id const&) in libTF.a(LogStream.o)
      sqnet::LogStream::operator<<(std::string const&) in libTF.a(EventLoop.o)
      sqnet::LogStream::operator<<(std::string const&) in libTF.a(TcpClient.o)
      sqnet::LogStream::operator<<(std::string const&) in libTF.a(TcpConnection.o)
      sqnet::StringPiece::StringPiece(std::string const&) in libTF.a(TcpConnection.o)
      FileSrvDownLoadRsp::lenByProtocal() const in libTF.a(_auto_filesrv_msg.o)
      sqnet::StringPiece::StringPiece(std::string const&) in libTF.a(_auto_filesrv_msg.o)
      ...
"std::string::c_str() const", referenced from:
      boost::system::system_error::what() const in libTF.a(SQNetChannel.o)
      boost::system::system_error::what() const in libTF.a(ChannelClient.o)
      boost::system::system_error::what() const in libTF.a(ChannelClientWrapper.o)
      boost::system::system_error::what() const in libTF.a(thread-CEABBE7F4161525B.o)
      boost::system::system_error::what() const in libTF.a(mutex.o)
      boost::system::system_error::what() const in libTF.a(CurrentThread.o)
      boost::system::system_error::what() const in libTF.a(Condition.o)
      ...
"std::string::empty() const", referenced from:
      boost::system::system_error::what() const in libTF.a(SQNetChannel.o)
      boost::system::system_error::what() const in libTF.a(ChannelClient.o)
      boost::system::system_error::what() const in libTF.a(ChannelClientWrapper.o)
      boost::system::system_error::what() const in libTF.a(thread-CEABBE7F4161525B.o)
      boost::system::system_error::what() const in libTF.a(mutex.o)
      boost::system::system_error::what() const in libTF.a(CurrentThread.o)
      boost::system::system_error::what() const in libTF.a(Condition.o)
      ...
"std::string::length() const", referenced from:
      FileSrvDownLoadRsp::serialize2Buf(sqnet::Buffer*) const in libTF.a(_auto_filesrv_msg.o)
      FileSrvDownLoadReq::serialize2Buf(sqnet::Buffer*) const in libTF.a(_auto_filesrv_msg.o)
      FileSrvRecvBlkRsp::serialize2Buf(sqnet::Buffer*) const in libTF.a(_auto_filesrv_msg.o)
      FileSrvTranFileCompleteRsp::serialize2Buf(sqnet::Buffer*) const in libTF.a(_auto_filesrv_msg.o)
      FileSrvSendBlkRsp::serialize2Buf(sqnet::Buffer*) const in libTF.a(_auto_filesrv_msg.o)
      FileSrvUpLoadRsp::serialize2Buf(sqnet::Buffer*) const in libTF.a(_auto_filesrv_msg.o)
      FileSrvUpLoadReq::serialize2Buf(sqnet::Buffer*) const in libTF.a(_auto_filesrv_msg.o)
      ...
"std::string::substr(unsigned long, unsigned long) const", referenced from:
      getFileNameFromPath(std::string) in libTF.a(FileSrvClient.o)
"std::string::compare(char const*) const", referenced from:
      CSpeedComm::CheckHttpHeader(char const*) in libMTIA.a(SpeedComm.o)
      CSpeedDecoder::DecodeQuoteUpdateData(CDecodeCode&) in libMTIA.a(SpeedDecoder.o)
      CSpeedDecoder::DecodeQuoteUpdateDataNew(CDecodeCode&) in libMTIA.a(SpeedDecoder.o)
      CSpeedDecoder::DecodeFormalizedTrend(CDecodeCode&) in libMTIA.a(SpeedDecoder.o)
      CSpeedDecoder::DecodeFormalizedDeal(CDecodeCode&) in libMTIA.a(SpeedDecoder.o)
      CSpeedDecoder::DecodeDayKLineData(CDecodeCode&) in libMTIA.a(SpeedDecoder.o)
      CSpeedDecoder::DecodeMinuteKlineData(CDecodeCode&) in libMTIA.a(SpeedDecoder.o)
      ...
"std::string::compare(std::string const&) const", referenced from:
...下面省略...