Need to link cmake project to dl library

Question

I am building a shared library that uses the dlopen and dlsym system calls. When I build, I get the error

undefined reference to `dlopen`

How can I fix this? Thanks!

Answer 1

答案很简单：需要告诉cmake使用${CMAKE_DL_LIBS}与DL库链接。

因此，对于与使用dlopen等的库链接的任何目标，请调用：

target_link_libraries(MY_TARGET LIB1 LIB2 ... LIBN ${CMAKE_DL_LIBS})