Undefined reference to symbol ‘dlclose@@GLIBC_2.2.5‘ //lib/x86_64-linux-gnu/libdl.so.2

我用cmake编译经常遇到一个问题，今天在这里记录一下：

 undefined reference to symbol 'dlclose@@GLIBC_2.2.5'
//lib/x86_64-linux-gnu/libdl.so.2: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status

解决方法：

加一个 -ldl，将下面这句话加在CMakeLists.txt里面

set (CMAKE_CXX_LINK_EXECUTABLE "${CMAKE_CXX_LINK_EXECUTABLE} -ldl") 

 

参考链接：

https://stackoverflow.com/questions/23141575/undefined-reference-to-symbol-dso-missing-from-command-line