undefined reference to 'dlopen';undefined reference to 'dlclose';undefined reference to 'dlerror'等问题
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转载:undefined reference to涉及的链接问题
http://blog.csdn.net/lyuan13141234/article/details/5667570
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在linux下,编译链接的时候,经常会遇到这样一个问题,undefined reference to.....,引起这个问题的原因在于在链接的时候缺少选项。下面举几个例子,并给出解决办法。
1、 undefined reference to `dlerror'
undefined reference to `dlopen'
undefined reference to `dlerror';;解决方法:在makefile的 ldflags 后面把选项 -ldl添加上即可
2、undefined reference to `main';;解决方法:在makefile的 ldflags 后面添加 -nostartfiles 选项
3、undefined reference to `pthread_setspecific'
undefined reference to `pthread_key_delete'
undefined reference to `pthread_key_create'::解决办法:在makefile的LDFLAGS后面添加 -lpthread 选项。
最后::如果undefined reference to后面的内容是在自己的文件中声明或定义的东西,就不能用这种方法来解决了。这时就需要检查一下自己的makefile涉及到源文件、头文件的地方是否出错了,也有可能是其他的原因
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