无法为PJSIP创建动态库

我们有一个脚本将PJSIP编译为一个庞大的静态库。但是我们想创建一个动态库，这样它就可以在swift项目中使用。

更新9 sept 2016:

当使用"——enable-shared"选项编译PJSIP时，大多数库的是正确构建的。然而，在这种情况下，有些库是为错误的体系结构编译的X86_64代替arm64

libg7221codec.dylib is architecture: x86_64
libgsmcodec.dylib is architecture: x86_64
libilbccodec.dylib is architecture: x86_64
libresample.dylib is architecture: x86_64
libyuv.dylib is architecture: x86_64

然而这些是正确的:

libpjsip.dylib is architecture: arm64
libpjsua.dylib is architecture: arm64
libpjsua2.dylib is architecture: arm64

当我们开始构建时:

+ ./configure-iphone --enable-shared
+ make dep
+ make clean

完全正确，但

+ make

生成以下警告:

ld: warning: -undefined dynamic_lookup is deprecated on iOS
ld: warning: -flat_namespace is deprecated on iOS

和很多像这样的警告:

ld: warning: ignoring file
output/libilbccodec-arm64-apple-darwin_ios/iLBC_decode.o, file was built
for unsupported file format ( 0xCF 0xFA 0xED 0xFE 0x0C 0x00 0x00 0x01 0x00
0x00 0x00 0x00 0x01 0x00 0x00 0x00 ) which is not the architecture being
linked (x86_64): output/libilbccodec-arm64-apple-darwin_ios/iLBC_decode.o
ld: warning: ignoring file
output/libg7221codec-arm64-apple-darwin_ios/common/common.o, file was built
for unsupported file format ( 0xCF 0xFA 0xED 0xFE 0x0C 0x00 0x00 0x01 0x00
0x00 0x00 0x00 0x01 0x00 0x00 0x00 ) which is not the architecture being
linked (x86_64): output/libg7221codec-arm64-apple-darwin_ios/common/common.o

ld: warning: ignoring file /pjsip/src/third_party/lib/libg7221codec.dylib,
file was built for x86_64 which is not the architecture being linked
(arm64): /pjsip/src/third_party/lib/libg7221codec.dylib

是什么原因导致一些库被编译为正确的建筑和一些不是吗?我怎么才能解决这个问题?

对于背景信息，由configure-iphone:

configure-iphone: DEVPATH is not specified, using
/Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer
configure-iphone: IPHONESDK is not specified, choosing iPhoneOS9.3.sdk
configure-iphone: CC is not specified, choosing
/Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/../../../Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
configure-iphone: CXX is not specified, using
/Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/../../../Toolchains/XcodeDefault.xctoolchain/usr/bin/clang

configure-iphone: calling ./configure with env vars:

CC =
/Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/../../../Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
 CXX =
/Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/../../../Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
 SDKPATH =
/Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk
 CFLAGS = -miphoneos-version-min=9.0 -DPJ_SDK_NAME=""iPhoneOS9.3.sdk""
-arch arm64 -isysroot
/Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk
 LDFLAGS = -O2 -arch arm64 -isysroot
/Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS9.3.sdk
-framework AudioToolbox -framework Foundation
 AR =
/Applications/XCode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/../../../Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool
-static -o
 RANLIB = echo ranlib
 ARCH = arm64

初始过程:

到目前为止我们的进程是:

使用PJSIP bash脚本为1架构创建一个胖的静态库。
用lipo和ar将所有内容提取到单独的文件中
试图用libtool创建一个动态库。

但是我们在链接到其他框架时遇到了问题(据我们所知)。是这样还是我们做错了什么?

这是步骤3的细节:

我们在一个文件夹中有一个架构的所有文件。然后运行libtool命令:

libtool -dynamic *.o -o pjsip.dylib -framework AudioToolbox -framework Foundation -framework AVFoundation -framework CoreFoundation -lSystem -ios_version_min 9.0

运行命令后的开始输出:

    ld: warning: -force_cpusubtype_ALL will become unsupported for ARM architectures
Undefined symbols for architecture armv7s:
  "_AVAudioSessionCategoryPlayAndRecord", referenced from:
      _ca_factory_init in coreaudio_dev.o
  "_AVAudioSessionModeVoiceChat", referenced from:
      _ca_factory_init in coreaudio_dev.o
  "_AudioComponentFindNext", referenced from:
      _ca_factory_init in coreaudio_dev.o
      _ca_stream_set_cap in coreaudio_dev.o
  "_AudioComponentGetDescription", referenced from:
      _ca_stream_get_cap in coreaudio_dev.o
  "_AudioComponentInstanceDispose", referenced from:
      _ca_stream_destroy in coreaudio_dev.o
  "_AudioComponentInstanceNew", referenced from:
      _create_audio_unit in coreaudio_dev.o
  "_AudioConverterDispose", referenced from:
      _ca_stream_destroy in coreaudio_dev.o
      _ilbc_dealloc_codec in ilbc.o
  "_AudioConverterFillComplexBuffer", referenced from:
      _resample_callback in coreaudio_dev.o
      _ilbc_codec_encode in ilbc.o
      _ilbc_codec_decode in ilbc.o
      _ilbc_codec_recover in ilbc.o
  "_AudioConverterNew", referenced from:
      _ilbc_codec_open in ilbc.o
  "_AudioConverterReset", referenced from:
      _ca_stream_start in coreaudio_dev.o
  "_AudioFormatGetProperty", referenced from:
      _ilbc_codec_open in ilbc.o
  "_AudioOutputUnitStart", referenced from:
      _ca_stream_start in coreaudio_dev.o
  "_AudioOutputUnitStop", referenced from:
      _ca_stream_start in coreaudio_dev.o
      _ca_stream_stop in coreaudio_dev.o
  "_AudioUnitInitialize", referenced from:
      _create_audio_unit in coreaudio_dev.o
  "_AudioUnitRender", referenced from:
      _resample_callback in coreaudio_dev.o
      _input_callback in coreaudio_dev.o
  "_AudioUnitSetProperty", referenced from:
      _create_audio_unit in coreaudio_dev.o
  "_AudioUnitUninitialize", referenced from:
      _ca_stream_destroy in coreaudio_dev.o
  "_CFArrayGetCount", referenced from:
      _pj_getaddrinfo in addr_resolv_sock.o
  "_CFArrayGetValueAtIndex", referenced from:
      _pj_getaddrinfo in addr_resolv_sock.o
  "_CFDataGetBytePtr", referenced from:
      _pj_getaddrinfo in addr_resolv_sock.o
  "_CFHostCreateWithName", referenced from:
      _pj_getaddrinfo in addr_resolv_sock.o
  "_CFHostGetAddressing", referenced from:
      _pj_getaddrinfo in addr_resolv_sock.o
  "_CFHostStartInfoResolution", referenced from:
      _pj_getaddrinfo in addr_resolv_sock.o
  "_CFReadStreamClose", referenced from:
      _activesock_destroy_iphone_os_stream in activesock.o
  "_CFReadStreamOpen", referenced from:
      _activesock_create_iphone_os_stream in activesock.o
  "_CFReadStreamSetProperty", referenced from:
      _activesock_create_iphone_os_stream in activesock.o
  "_CFRelease", referenced from:
      _activesock_destroy_iphone_os_stream in activesock.o
      _pj_getaddrinfo in addr_resolv_sock.o
  "_CFStreamCreatePairWithSocket", referenced from:
      _activesock_create_iphone_os_stream in activesock.o
  "_CFStringCreateWithCStringNoCopy", referenced from:
      _pj_getaddrinfo in addr_resolv_sock.o
  "_Gsm_LPC_Analysis", referenced from:
      _Gsm_Coder in code.o
  "_Gsm_Preprocess", referenced from:
      _Gsm_Coder in code.o
  "_OBJC_CLASS_$_AVAudioSession", referenced from:
      objc-class-ref in coreaudio_dev.o
  "_OBJC_CLASS_$_UIDevice", referenced from:
      objc-class-ref in os_info_iphone.o
  "__DefaultRuneLocale", referenced from:
      __Z8__istypeim in siptypes.o

共享库在运行时加载。因此，您必须为您的应用程序提供库，并自己用dlopen(3)加载它，因为您不能将它安装到系统库路径中。你还必须共同设计你的库。

但是这没有意义:

苹果可能会拒绝你的二进制文件，如果他们检测到共享库，他们会指向共享框架。

将库包含到共享框架中应该很容易。只需将静态库添加到链接框架和共享框架中的库。确保静态库被编译为定位独立的代码，这应该是默认的。

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