Question

GCC 4.6.0
Linux
cmake 2.8

I am using cmake to generate my make file. However, in my network_imp.c file I need to do some threading. So I have included the header file #include <pthread.h> and I am using the pthread_create() function

How can I tell cmake to use this header pthread.h and shared library -lpthread?

I thought about using the find_package, but I don’t think I am using it correctly. This is my CMakeLists.txt file.

find_package(pthread)

add_library(network SHARED network_imp.c)

The error I get when I try and make is this:

undefined reference to pthread_create

Many thanks for any suggestions,

Answer 1

In general you should use target_link_libraries cmake command to link your executables with other libraries. find_package command is used to set special cmake variables, containing, for example, the actually libraries, to link with.

And for working with pthread you should use find_package(Threads).

And here is the answer to your particular question.