Mac上的Eclipse dyld：未加载库：找不到图像 [英] Eclipse on Mac dyld: Library not loaded: Image not found

问题描述

全部：

我已经在一个工作区（HelloWorld）中成功设置了两个项目（Hello和World）。这些是简单的项目，应该一起作为一个主要项目和一个共享库项目。这是结构：

  HelloWorld 
 Hello 
 src 
 Hello.cpp 
 Debug 
 src 
 Hello  -  [x86_64 / le] 
 World 
 src 
 World.cpp 
 World.h 
 Debug 
 src 
 libWorld.dylib  - （x86_64 / le] 
  

但是，当我试图运行Hello项目时，我收到以下错误：

  dyld：库未加载：libWorld.dylib 
引用自：/ Users / pdl / Development / HelloWorld / Hello / Debug / Hello 
原因：找不到图片
  

我发布了下面的代码，它是超级简单，问题（我相信）是在Eclipse配置中的某个地方。

预先感谢您的帮助。

------------------ -------------------------- 源代码 --------------- -------------------

Hello.cpp

  #include< stdio.h> 
 #includeWorld.h
 
 int main（）{
 printf（Hello％s\\\
，getWorld（）。c_str（））; 
 return 0; 
} 
  

World.cpp
$ b

  #includeWorld.h
 
 std :: string getWorld（）{returnWorld; } 
  

World.h

  #include< string> 
 
 std :: string getWorld（）; 
  

解决方案

  dyld：库未加载：libWorld.dylib 
引用自：/ Users / pdl / Development / HelloWorld / Hello / Debug / Hello 
原因：未找到图片
  pre> 
 
 
这意味着您的程序正在使用一个名为libWorld.dylib的动态库，尽管您在编译期间将动态库链接到您的程序。但是你必须告诉你的程序在运行时dylib在哪里。 
 
 
 
有两种解决方案：
 
 
 
解决方案1：为项目设置动态库环境变量在Eclipse ：
 
 
 
 1.右键单击您的项目名称 运行As->运行配置 
 
 
 
 2.Under 环境 tab 新 
 
 
 
 3.Put  DYLD_LIBRARY_PATH 或 DYLD_FALLBACK_LIBRARY_PATH 在中框
 
 
 
路径 libWorld.dylib 文件位于值框
 
 
 
例如：
 if  libWorld.dylib 文件位于 / opt / local / lib / my_dylib 文件夹，而不是将路径放在名称框中
 
 
 
解决方案2：设置 DYLD_LIBRARY_PATH  
 
 
 
 1.正常情况下，在Mac OS中，配置文件为 .profile  〜/ 文件夹下，如果您没有此文件，请创建一个相同名称的新文件
 
 
 
 2.编辑该文件：
 
 
在 .profile 文件中添加此行：
  export DYLD_LIBRARY_PATH = PATH_TO_YOUR_DYLIB：$ DYLD_LIBRARY_PATH  
 
 
 
在我的示例中，PATH_TO_YOUR_DYLIB  opt / local / lib / my_dylib ，所以你只需添加：
 export DYLD_LIBRARY_PATH = / opt / local / lib / my_dylib：$ DYLD_LIBRARY_PATH 
 in .profile file 
 
 
 3.问题解决了，在这个解决方案中，你不必为所有eclipse项目设置dylib路径
 
 
 
 PS。 DYLD_LIBRARY_PATH是一个环境变量，用于指定动态库的路径
 
 
 
  DYLD_LIBRARY_PATH 和 DYLD_FALLBACK_LIBRARY_PATH 请参阅 this  post 
 
All:

I have successfully set up two projects (Hello and World) in one workspace (HelloWorld).  These are simple projects that are supposed to work together as a main project and a shared library project.  This is the structure:
HelloWorld
    Hello
        src
            Hello.cpp
        Debug
            src
            Hello - [x86_64/le]
    World
        src
            World.cpp
            World.h
        Debug
            src
            libWorld.dylib - (x86_64/le]
I have followed all instructions and finally was able to get them to compile with no errors.  However, when I try to run the Hello project I receive the following error:
dyld: Library not loaded: libWorld.dylib
  Referenced from: /Users/pdl/Development/HelloWorld/Hello/Debug/Hello
  Reason: image not found
I posted the code below.  It is super simple and the problem (I believe) is somewhere in the Eclipse configuration.

Thank you in advance for your help.

-------------------------------------------- Source Code ----------------------------------

Hello.cpp
#include <stdio.h>
#include "World.h"

int main() {
  printf("Hello %s\n", getWorld().c_str());
  return 0;
}
World.cpp
#include "World.h"

std::string getWorld() { return "World"; }
World.h
#include <string>

std::string getWorld();

解决方案
dyld: Library not loaded: libWorld.dylib
Referenced from: /Users/pdl/Development/HelloWorld/Hello/Debug/Hello
Reason: image not found
This means that your program is using a dynamic library called libWorld.dylib, although you linked your dynamic library to your program during compiling. But you have to tell your program where is the dylib in run-time. 

There are two solutions:

Solution 1: set up dynamic library environment variables for your project in Eclipse:

1.Right click your project name, select Run As->Run Configuration 

2.Under Environment tab click New

3.Put DYLD_LIBRARY_PATH or DYLD_FALLBACK_LIBRARY_PATH in Name box

4.Put the path where your libWorld.dylib file is in Value box

For example: 
      if libWorld.dylib file is in /opt/local/lib/my_dylib folder, than put the path in the Name box

Solution 2: set DYLD_LIBRARY_PATH in your bash configuration file

1.Normally in Mac OS, configuration file is .profile under ~/ folder, if you don't have this file than create a new file with the same name

2.Edit that file: 

  
Add this line in your .profile file:
      export DYLD_LIBRARY_PATH=PATH_TO_YOUR_DYLIB:$DYLD_LIBRARY_PATH
  
  
in my example the PATH_TO_YOUR_DYLIB is opt/local/lib/my_dylib, so you just add:
       export DYLD_LIBRARY_PATH=/opt/local/lib/my_dylib:$DYLD_LIBRARY_PATH 
  in .profile file
3.Problem solved, in this solution, you don't have to set up dylib path for all eclipse project

PS. DYLD_LIBRARY_PATH is an environment variable to specify the path of your dynamic library

Difference between DYLD_LIBRARY_PATH and DYLD_FALLBACK_LIBRARY_PATH please refer to this post

                        
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