Linux threading problem undefined reference to ' pthread_create ' solution (CMake)

Cause of the problem:

The Pthread library is not the default library for Linux systems and requires the use of static library libpthread.a when connecting.

So when you use Pthread_create () to create a thread, you need to link the library.

1. Terminal: PROBLEM Solving:
Add the-pthread parameter to the compilation

GCC Thread.c-o thread-pthread

2. qt CMake Configuration: Can modify the CMakeLists.txt:

Here's the right answer:

Add_executable (your_executable ${source_files}) target_link_libraries (Your_executablepthread)

Equivalent to

-pthread

Linux threading problem undefined reference to ' pthread_create ' solution (CMake)