是libsasl2上破OSX约塞米蒂？缺少sasl_client_done [英] Is libsasl2 broken on OSX Yosemite? Missing sasl_client_done

问题描述

我已经遇到一些麻烦libsasl2的安装版本（赛勒斯SASL）。

I've been having some trouble with the installed version of libsasl2 (Cyrus SASL).

在具体而言，似乎本地头和sasl_version报告版本2.1.26，但没有符号被提供给全局函数sasl_client_done

In particular, it seems that the local headers and sasl_version report version 2.1.26, but no symbol is provided for the global function sasl_client_done.

我是pretty相信我应该有一个符号，因为：

I'm pretty sure I'm supposed to have that symbol because:

• 它的存在在提供SASL / sasl.h头


• 的cyrsus SASL NEWS文件列表实现sasl_client_done（）/ sasl_server_done（）为2.1.24功能


• 这是到处存在提供2.1.26外约塞米蒂

有关再现：

• 注意，下面的打印样本
  
  
  
  • IMP​​L：赛勒斯SASL'，版本：33619994，主要：2，轻微的：1，第一步：26
  
  

  在注释掉code产生的优胜美地链接错误

  the uncommented code produces a link error on yosemite

  Undefined symbols for architecture x86_64:
    "_sasl_client_done", referenced from:
        _main in foo-072675.o
  ld: symbol(s) not found for architecture x86_64
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  

  与调用编译器：

  clang -Wall -Werror -lsasl2 -o foo foo.c -v
  

  随着铿锵-v：

  Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM 3.5svn)
  Target: x86_64-apple-darwin14.0.0
  Thread model: posix
   "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang" -cc1 -triple x86_64-apple-macosx10.10.0 -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name foo.c -mrelocation-model pic -pic-level 2 -mdisable-fp-elim -masm-verbose -munwind-tables -target-cpu core2 -target-linker-version 241.9 -v -resource-dir /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -Wall -Werror -fdebug-compilation-dir /Users/jcarey/work -ferror-limit 19 -fmessage-length 0 -stack-protector 1 -mstackrealign -fblocks -fobjc-runtime=macosx-10.10.0 -fencode-extended-block-signature -fdiagnostics-show-option -vectorize-slp -o /var/folders/wq/jypwqgv976n0db5l5qxw900r0000gq/T/foo-92054e.o -x c foo.c
  clang -cc1 version 6.0 based upon LLVM 3.5svn default target x86_64-apple-darwin14.0.0
  ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/local/include"
  ignoring nonexistent directory "/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/Library/Frameworks"
  #include "..." search starts here:
  #include <...> search starts here:
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0/include
   /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include
   /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include
   /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks (framework directory)
  End of search list.
   "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld" -demangle -dynamic -arch x86_64 -macosx_version_min 10.10.0 -syslibroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -o foo -lsasl2 /var/folders/wq/jypwqgv976n0db5l5qxw900r0000gq/T/foo-92054e.o -lSystem /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/6.0/lib/darwin/libclang_rt.osx.a
  Undefined symbols for architecture x86_64:
    "_sasl_client_done", referenced from:
        _main in foo-92054e.o
  ld: symbol(s) not found for architecture x86_64
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  

  而code问题：

  And the code in question:

  #include <sasl/sasl.h>
  #include <stdio.h>
  #include <stdint.h>
  
  int main(int argc, char ** argv) {
      const char *impl;
      int version;
      uint32_t buf;
      uint16_t major;
      uint8_t minor;
      uint8_t step;
  
      sasl_version(&impl, &version);
  
      buf = version;
  
      major = buf >> 24;
      minor = (buf << 8) >> 24;
      step = (buf << 24) >> 24;
  
      printf("impl: '%s', version: %d, major: %d, minor: %d, step: %d\n", impl, version, major, minor, step);
  
      /*
      {
          int (* scd)(void);
  
          scd = &sasl_client_done;
  
          printf("sasl_client_done: %p\n", scd);
      }
      */
  
      return 0;
  }
  

  我在想的东西的扭曲的方式赛勒斯SASL得到打包优胜美地（使用小牛符号列表吧？）。

  I'm thinking that something's screwy with the way cyrus sasl got packaged for Yosemite (using a symbol list from Mavericks perhaps?).

  推荐答案

  作为感兴趣的事，我只是检查与10.10.4，我看到的符号是现在：

  As a matter of interest, I just checked with 10.10.4 and I see the symbol is now there:

  $ nm /usr/lib/libsasl2.dylib |grep sasl_client_done
  000000000000724a T _sasl_client_done
  

  样品code现在工作正常（与注释部分取消注释现在）。同样赛勒斯SASL版本仍然返回，但：

  The sample code now works fine (with the commented section now uncommented). The same Cyrus SASL version is still returned though:

  impl: 'Cyrus SASL', version: 33619994, major: 2, minor: 1, step: 26
  sasl_client_done: 0x7fff8e3dc24a
  

  这篇关于是libsasl2上破OSX约塞米蒂？缺少sasl_client_done的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！