libpthread.so.0: undefined reference to

pthread_create

This error message usually occurs when the linker cannot find the definition for the "pthread_create" function in the "libpthread.so.0" library. It may indicate that you haven't linked against the pthread library or that the library is not installed on your system.

To resolve this issue, you need to link against the pthread library during the compilation process. This can be done by adding the "-pthread" flag to your compiler command.

For example, if you are using GCC to compile your program, you can use the following command:

gcc your_file.c -o your_program -pthread

This will link against the pthread library and resolve the undefined reference error. Make sure that the pthread library is installed on your system before attempting to compile and link against it.