将库添加到 xcode 中的项目 - 未找到符号

Adding libraries to a project in xcode - symbols not found

提问by gyozo kudor

I am trying to make an iphone app in xcode that uses pjsip. The problem is I don't know how to link the libraries. This is the first time i am using other libraries so probably i am doing something wrong i just don't know what. :(

我正在尝试在 xcode 中制作一个使用pjsip的 iphone 应用程序。问题是我不知道如何链接库。这是我第一次使用其他库，所以可能我做错了什么，我只是不知道是什么。:(

I have the ARM version of the libraries in this folder in mac os x. /Users/kudorgyozo/pjsip_iphone

我在 mac os x 的这个文件夹中有库的 ARM 版本。/用户/kudorgyozo/pjsip_iphone

In Xcode: I have specified the library and header search paths like this:

在 Xcode 中：我已经指定了库和头文件搜索路径，如下所示：

for includes:

包括：

/Users/kudorgyozo/pjsip_iphone/pjlib/include /Users/kudorgyozo/pjsip_iphone/pjlib-util/include /Users/kudorgyozo/pjsip_iphone/pjmedia/include /Users/kudorgyozo/pjsip_iphone/pjnath/include /Users/kudorgyozo/pjsip_iphone/pjsip/include

/Users/kudorgyozo/pjsip_iphone/pjlib/include /Users/kudorgyozo/pjsip_iphone/pjlib-util/include /Users/kudorgyozo/pjsip_iphone/pjmedia/include /Users/kudorgyozo/pjsip_iphone/pjnath/include /Users/kudorgyozo/pjsip_iphone/pjlib-util/include /包括

for libraries:

对于图书馆：

/Users/kudorgyozo/pjsip_iphone/pjlib/lib /Users/kudorgyozo/pjsip_iphone/pjlib-util/lib /Users/kudorgyozo/pjsip_iphone/pjmedia/lib /Users/kudorgyozo/pjsip_iphone/pjnath/lib /Users/kudorgyozo/pjsip_iphone/pjsip/lib

/Users/kudorgyozo/pjsip_iphone/pjlib/lib /Users/kudorgyozo/pjsip_iphone/pjlib-util/lib /Users/kudorgyozo/pjsip_iphone/pjmedia/lib /Users/kudorgyozo/pjsip_iphone/pjnath/lib /Users/kudorgyozo/pjsip_iphone/pjlib-util/lib /lib

and then using the "Other linker flags" :

然后使用“其他链接器标志”：

-lpj-arm-apple-darwin9 -lpjlib-util-arm-apple-darwin9 -lpjmedia-arm-apple-darwin9 -lpjmedia-audiodev-arm-apple-darwin9 -lpjmedia-codec-arm-apple-darwin9 -lpjsdp-arm-apple-darwin9 -lpjnath-arm-apple-darwin9 -lpjsip-arm-apple-darwin9 -lpjsip-simple-arm-apple-darwin9 -lpjsip-ua-arm-apple-darwin9 -lpjsua-arm-apple-darwin9

-lpj-arm-apple-darwin9 -lpjlib-util-arm-apple-darwin9 -lpjmedia-arm-apple-darwin9 -lpjmedia-audiodev-arm-apple-darwin9 -lpjmedia-codec-arm-apple-darwin9 -lpjsdp-arm -apple-darwin9 -lpjnath-arm-apple-darwin9 -lpjsip-arm-apple-darwin9 -lpjsip-simple-arm-apple-darwin9 -lpjsip-ua-arm-apple-darwin9 -lpjsua-arm-apple-darwin9

Is this OK like this? Because it gives me symbol(s) not found errors. I think no symbol is found from the "included" libraries. I don't know what is wrong i'm just beginning to understand how building an app works under linux based systems i've only done programming in C# before.

这样可以吗？因为它给了我符号未找到的错误。我认为从“包含的”库中找不到任何符号。我不知道出了什么问题，我才刚刚开始了解如何在基于 linux 的系统下构建应用程序，我以前只用 C# 进行过编程。

EDIT: Here is a list of symbols missing:

编辑：这是缺少的符号列表：

"_AudioSessionSetProperty", referenced from:
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_set_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_set_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_srtp_deinit", referenced from:
      _pjmedia_srtp_deinit_lib in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
  "_gsm_encode", referenced from:
      _gsm_codec_encode in libpjmedia-codec-arm-apple-darwin9.a(gsm.o)
  "_AudioComponentInstanceNew", referenced from:
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioSessionAddPropertyListener", referenced from:
      _ca_stream_start in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_speex_decoder_init", referenced from:
      _spx_codec_open in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_res_Resample", referenced from:
      _pjmedia_resample_run in libpjmedia-arm-apple-darwin9.a(resample_resample.o)
      _pjmedia_resample_run in libpjmedia-arm-apple-darwin9.a(resample_resample.o)
  "_speex_bits_write", referenced from:
      _spx_codec_encode in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_gsm_destroy", referenced from:
      _gsm_codec_close in libpjmedia-codec-arm-apple-darwin9.a(gsm.o)
      _gsm_codec_close in libpjmedia-codec-arm-apple-darwin9.a(gsm.o)
  "_AudioComponentInstanceDispose", referenced from:
      _propListener in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_destroy in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioSessionGetProperty", referenced from:
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioComponentFindNext", referenced from:
      _ca_stream_set_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_factory_init in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_speex_encoder_ctl", referenced from:
      _get_speex_info in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _get_speex_info in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _get_speex_info in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _get_speex_info in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _get_speex_info in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _get_speex_info in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _get_speex_info in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _get_speex_info in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_modify in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_modify in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_open in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_open in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_open in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_open in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_open in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_speex_encoder_init", referenced from:
      _get_speex_info in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_open in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_AudioSessionSetActive", referenced from:
      _ca_stream_stop in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_start in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioUnitRender", referenced from:
      _input_callback in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_srtp_dealloc", referenced from:
      _pjmedia_transport_srtp_stop in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
      _pjmedia_transport_srtp_stop in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
      _pjmedia_transport_srtp_start in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
  "_speex_lib_get_mode", referenced from:
      _pjmedia_codec_speex_init in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _pjmedia_codec_speex_init in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_res_SrcLinear", referenced from:
      _pjmedia_resample_run in libpjmedia-arm-apple-darwin9.a(resample_resample.o)
      _pjmedia_resample_run in libpjmedia-arm-apple-darwin9.a(resample_resample.o)
  "_srtp_init", referenced from:
      _pjmedia_srtp_init_lib in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
  "_speex_bits_init", referenced from:
      _spx_codec_open in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_open in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_AudioUnitSetProperty", referenced from:
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioUnitUninitialize", referenced from:
      _propListener in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_destroy in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_speex_decoder_destroy", referenced from:
      _spx_codec_close in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_AudioUnitInitialize", referenced from:
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_speex_bits_reset", referenced from:
      _spx_codec_encode in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_AudioOutputUnitStop", referenced from:
      _ca_stream_stop in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_stop in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_start in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _interruptionListener in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_srtp_protect_rtcp", referenced from:
      _transport_send_rtcp2 in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
  "_speex_decode_int", referenced from:
      _spx_codec_recover in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_decode in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_speex_encoder_destroy", referenced from:
      _get_speex_info in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_close in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_gsm_create", referenced from:
      _gsm_codec_open in libpjmedia-codec-arm-apple-darwin9.a(gsm.o)
      _gsm_codec_open in libpjmedia-codec-arm-apple-darwin9.a(gsm.o)
  "_crypto_get_random", referenced from:
      _generate_crypto_attr_value in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
  "_speex_bits_unpack_unsigned", referenced from:
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_speex_encode_int", referenced from:
      _spx_codec_encode in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_octet_string_hex_string", referenced from:
      _pjmedia_transport_srtp_start in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
      _pjmedia_transport_srtp_start in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
  "_AudioSessionInitialize", referenced from:
      _ca_factory_init in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_speex_bits_read_from", referenced from:
      _spx_codec_parse in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_decode in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_speex_nb_mode", referenced from:
      _speex_nb_mode$non_lazy_ptr in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_res_GetXOFF", referenced from:
      _pjmedia_resample_create in libpjmedia-arm-apple-darwin9.a(resample_resample.o)
  "_gsm_decode", referenced from:
      _gsm_codec_decode in libpjmedia-codec-arm-apple-darwin9.a(gsm.o)
  "_speex_mode_query", referenced from:
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_speex_bits_advance", referenced from:
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_decode in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_AudioComponentGetDescription", referenced from:
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_srtp_create", referenced from:
      _pjmedia_transport_srtp_start in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
      _pjmedia_transport_srtp_start in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
  "_speex_bits_remaining", referenced from:
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _speex_get_next_frame in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_srtp_unprotect_rtcp", referenced from:
      _srtp_rtcp_cb in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
  "_AudioOutputUnitStart", referenced from:
      _ca_stream_start in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioSessionRemovePropertyListenerWithUserData", referenced from:
      _ca_stream_destroy in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_speex_decoder_ctl", referenced from:
      _spx_codec_modify in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_open in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_open in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_speex_bits_nbytes", referenced from:
      _spx_codec_encode in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_srtp_protect", referenced from:
      _transport_send_rtp in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
  "_speex_bits_destroy", referenced from:
      _spx_codec_close in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
      _spx_codec_close in libpjmedia-codec-arm-apple-darwin9.a(speex_codec.o)
  "_srtp_unprotect", referenced from:
      _srtp_rtp_cb in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)
      _srtp_rtp_cb in libpjmedia-arm-apple-darwin9.a(transport_srtp.o)

Did anybody build pjsip for iphone and created a new project using it?

有没有人为 iphone 构建 pjsip 并使用它创建了一个新项目？

回答by Laurent Etiemble

It seems that you are missing (at least) some libraries. From the symbols, I would say that:

您似乎缺少（至少）一些库。从符号来看，我会说：

• You have probably forgot to add the CoreAudio framework. It is needed to resolve symbols like AudioUnitRender
• There should be a RTP library from pjsip, something that contains pjrtp. If there is one, then add it to the Other Link Flags. That will fix the _srtp_XXXmissing symbols.
• There should be a GSM library from pjsip, something that contains gsm. If there is one, then add it to the Other Link Flags. That will fix the _srtp_XXXmissing symbols.
• There should be a Speex library from pjsip, something that contains speex. If there is one, then add it to the Other Link Flags. That will fix the _srtp_XXXmissing symbols.

• 您可能忘记添加 CoreAudio 框架。需要解析像这样的符号AudioUnitRender
• 应该有一个来自 pjsip 的 RTP 库，它包含pjrtp. 如果有，则将其添加到其他链接标志。这将修复_srtp_XXX丢失的符号。
• 应该有一个来自 pjsip 的 GSM 库，其中包含gsm. 如果有，则将其添加到其他链接标志。这将修复_srtp_XXX丢失的符号。
• 应该有一个来自 pjsip 的 Speex 库，其中包含speex. 如果有，则将其添加到其他链接标志。这将修复_srtp_XXX丢失的符号。

When encountering missing symbols, the best way to find where they are is:

遇到丢失的符号时，找到它们所在位置的最佳方法是：

• Look at the symbol name. Good libraries always prefix their symbols, so from the name you can guess which library holds it.
• If you have a set a static library and you want to know the symbols exported, then you can use the otool -Sv mystaticlib.acommand. It will displays the table of content for the static library.

• 查看符号名称。好的库总是在它们的符号前加上前缀，所以从名字你就可以猜出是哪个库保存了它。
• 如果你有一套静态库并且你想知道导出的符号，那么你可以使用该otool -Sv mystaticlib.a命令。它将显示静态库的目录。

回答by gyozo kudor

It seems I was stupid and didn't observe a folder called third-party. There are the missing libraries. In the docs theye were NOT mentioned so I didn't even bother looking in the other folders. I still have missing symbols but fewer (I think). I also included CoreAudio, I don't think it helped. I modified my project:

看来我很笨，没有观察到名为第三方的文件夹。有缺少的库。在文档中没有提到它们，所以我什至没有费心查看其他文件夹。我仍然缺少符号但更少（我认为）。我还包括 CoreAudio，我认为它没有帮助。我修改了我的项目：

Added to the other linker flags:

添加到其他链接器标志：

-lg7221codec-arm-apple-darwin9 -lgsmcodec-arm-apple-darwin9 -lilbccodec-arm-apple-darwin9 -lmilenage-arm-apple-darwin9 -lresample-arm-apple-darwin9 -lspeex-arm-apple-darwin9 -lsrtp-arm-apple-darwin9

And to the library search paths:

和图书馆搜索路径：

/Users/kudorgyozo/pjsip_iphone/third_party/lib

I don't have to modify the header search path's or include new headers i THINK.

我认为不必修改标题搜索路径或包含新标题。

Here's what is missing now:

这是现在缺少的：

  "_AudioSessionSetProperty", referenced from:
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_set_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_set_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioComponentInstanceNew", referenced from:
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioSessionAddPropertyListener", referenced from:
      _ca_stream_start in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioComponentInstanceDispose", referenced from:
      _propListener in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_destroy in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioSessionGetProperty", referenced from:
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioComponentFindNext", referenced from:
      _ca_stream_set_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_factory_init in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioSessionSetActive", referenced from:
      _ca_stream_stop in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_start in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioUnitRender", referenced from:
      _input_callback in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioUnitSetProperty", referenced from:
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioUnitUninitialize", referenced from:
      _propListener in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_destroy in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioUnitInitialize", referenced from:
      _create_audio_unit in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioOutputUnitStop", referenced from:
      _ca_stream_stop in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_stop in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _ca_stream_start in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
      _interruptionListener in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioSessionInitialize", referenced from:
      _ca_factory_init in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioComponentGetDescription", referenced from:
      _ca_stream_get_cap in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioOutputUnitStart", referenced from:
      _ca_stream_start in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
  "_AudioSessionRemovePropertyListenerWithUserData", referenced from:
      _ca_stream_destroy in libpjmedia-audiodev-arm-apple-darwin9.a(coreaudio_dev.o)
ld: symbol(s) not found

It seems to me all are from this file libpjmedia-audiodev-arm-apple-darwin9.a but i have included it in the linker flags an in the lib search paths.

在我看来，所有这些都来自这个文件 libpjmedia-audiodev-arm-apple-darwin9.a 但我已经将它包含在 lib 搜索路径中的链接器标志中。

I was able to build it successfully. The missing framework was AudioToolbox. Did a google search for AudioSessionSetProperty and that is how i found out. Thanks for help.

我能够成功构建它。缺少的框架是 AudioToolbox。谷歌搜索 AudioSessionSetProperty ，这就是我发现的。感谢帮助。

回答by mustafakyr

Add every static library to your xcode project which has been built during build of Pjsip libraries. Then add every framework related with Audio and Core frameworks.

将每个静态库添加到在构建 Pjsip 库期间构建的 xcode 项目中。然后添加与音频和核心框架相关的每个框架。