/ usr / bin / ld：找不到-lemu [英] /usr/bin/ld: cannot find -lemu

问题描述

我试图安装一个应用程序。在编译期间，它会失败并显示以下错误：

pre $ / usr / bin / ld：找不到-lemu


code>

我已经安装了libemu库，现在它驻留在/ opt / libemu /中。但是，当我尝试编译我的应用程序时，找不到该库。有没有什么方法可以解决这个问题？

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编辑：它也看起来像是导致：
它也看起来像make文件正在编译与以下内容：

  gcc -pthread -shared -Wl，-O1 -Wl， -Bsymbolic函数
 build / temp.linux-x86_64-2.6 / libemu_module.o 
 -L ​​/ opt / libemu / lib -lemu -o build / lib.linux-x86_64-2.6 / libemu.so 
  

我尝试将我的LD_LIBRARY_PATH设置为/ opt / libemu，但仍然无效 -

解决方案

您需要告诉链接器它在哪里：

  gcc stuff -L / opt / libemu -lemu 
  

<

  gcc stuff /opt/libemu/libemu.a 
  

其中东西是您正常的编译/链接选项文件等。

您也可以在LIBRARY_PATH环境变量中指定库路径：

  LIBRARY_PATH = / opt / libemu 
 export LIBRARY_PATH 
  

，然后再运行构建。另一个选择是通过运行来查看gcc在哪里查找库：

  gcc --print-search-dirs 
  

并将您的图书馆放入其中一个列出的目录中。

编辑：从您的最新信息中确实不清楚您正在尝试构建的内容。你是否试图将一个静态库变成一个共享库？最重要的是 - 复制到/ opt / libemu目录中的库文件的确切文件名是什么？

I am attempting to install an application. During compilation it fails with the following error:

/usr/bin/ld: cannot find -lemu

I have installed the libemu library, and it now currently resides in /opt/libemu/. However, when I try and compile my application the library is not found. Is there any way to correct this?

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EDIT: It also looks like the make is resulting in: It also looks like the make file is compiling with the following:

gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions 
build/temp.linux-x86_64-2.6/libemu_module.o 
-L/opt/libemu/lib -lemu -o build/lib.linux-x86_64-2.6/libemu.so

I have tried setting my LD_LIBRARY_PATH to /opt/libemu, still doesn't work - fails with the error mentioned above.

解决方案

You need to tell the linker where it is:

gcc  stuff -L/opt/libemu -lemu

or:

gcc  stuff /opt/libemu/libemu.a

where stuff is your normal compile/link options files etc.

You can also specify library paths in the LIBRARY_PATH environment variable:

LIBRARY_PATH=/opt/libemu
export LIBRARY_PATH

before you run your build. Yet another option is to see where gcc looks for libraries by running:

gcc --print-search-dirs

and put your library in one of the listed directories.

Edit: It is really not clear from your latest info what you are trying to build. Are you trying to turn a static library into a shared library? Most important - What is the exact filename of the library file you have copied into the /opt/libemu directory?

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