相关疑难解决方法(0)

OSX上的不同libjpeg动态库之间存在动态链接冲突.首先是标准的原生libJPEG.dylib(在/System/Library/Frameworks/ImageIO.framework/Versions/A/Resources/中).但是,如果您使用的是MacPorts,则还可以在/ opt/local/lib中使用与端口相关的libjpeg.dylib.例如,后者可以作为某些其他端口的依赖项安装.

当您链接到系统libJPEG(这是首选)时,这会产生问题.然后,如果/opt/local/lib在DYLD_LIBRARY_PATH中,则在搜索动态库时将优先考虑该路径,从而在加载符号时导致运行时错误:

dyld: Symbol not found: __cg_jpeg_resync_to_restart
 Referenced from:
/System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO
 Expected in: /opt/local/lib/libJPEG.dylib
in /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO
Trace/BPT trap: 5

所以我有两个问题(可能相关):

1. 什么是解决实际问题的好方法(/opt/local/lib从DYLD_LIBRARY_PATH显然解决它但从而为其他依赖创建问题)？

2. 搜索动态库的其他路径(即指定的"/ System/Library"路径在哪里)以及为什么DYLD_LIBRARY_PATH的优先级更高？

我在MAMP中通过PHP的exec()命令在Mac OSX 10.7.3上使用ffmpeg ,我有一个绝对路径设置来调用ffmpeg,例如

/opt/local/bin/ffmpeg -i "/sample.avi"

但是我收到以下错误 -

dyld: Library not loaded: /opt/local/lib/libjpeg.8.dylib  Referenced from: /opt/local/lib/libopenjpeg.1.dylib  Reason: Incompatible library version: libopenjpeg.1.dylib requires version 13.0.0 or later, but libJPEG.dylib provides version 12.0.0

NB ffmpeg是通过Macports安装的.

它可以从命令行运行.

该怎么办？

编辑

我已经重新开放这一点-原以为shell_exec()解决了问题,但INFACT应该叫不同的-我不知道直到今天进一步调查.这是我的代码使用shell_exec并仍然给出上面的错误:

 $cmd = '/opt/local/bin/ffmpeg -h';
 $cmd = escapeshellcmd($cmd) . ' 2>&1';
 $output = shell_exec($cmd);
 var_dump($output);

我正在尝试运行java版本的PowerLoom,但是当我尝试在终端中启动它时,我收到以下错误消息:

dyld: Symbol not found: __cg_jpeg_resync_to_restart
  Referenced from: /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO
  Expected in: /usr/local/lib/libJPEG.dylib
 in /System/Library/Frameworks/ImageIO.framework/Versions/A/ImageIO
Trace/BPT trap: 5

对于这个问题,这似乎是一个非常类似的问题,除了答案是针对MAMP/Cacti的.有关如何处理此问题的任何提示,甚至此错误信息的真正含义是什么？

我正在尝试将 Django 1.6.10-0 连接到以前在 1.5 上运行的项目。

在我的项目中编辑 wsgi.py 文件以包含项目路径后，我收到此错误：

mod_wsgi (pid=6805): Exception occurred processing WSGI script '/Users/Dreadfort/Documents/MyProject/project/wsgi.py'.
 Traceback (most recent call last):
   File "/Applications/djangostack-1.6.10-0/apps/django/lib/python2.7/site-packages/django/core/handlers/wsgi.py", line 187, in __call__
     self.load_middleware()
   File "/Applications/djangostack-1.6.10-0/apps/django/lib/python2.7/site-packages/django/core/handlers/base.py", line 44, in load_middleware
     for middleware_path in settings.MIDDLEWARE_CLASSES:
   File "/Applications/djangostack-1.6.10-0/apps/django/lib/python2.7/site-packages/django/conf/__init__.py", line 54, in __getattr__
     self._setup(name)
   File "/Applications/djangostack-1.6.10-0/apps/django/lib/python2.7/site-packages/django/conf/__init__.py", line 49, in _setup
     self._wrapped = Settings(settings_module)
   File "/Applications/djangostack-1.6.10-0/apps/django/lib/python2.7/site-packages/django/conf/__init__.py", line 128, in __init__
     mod = importlib.import_module(self.SETTINGS_MODULE)
   File "/Applications/djangostack-1.6.10-0/apps/django/lib/python2.7/site-packages/django/utils/importlib.py", line 40, in import_module
     __import__(name)
   File "/Users/Dreadfort/Documents/MyProject/project/__init__.py", line 5, in <module>
     from .celery import …