Error - undefined reference to 'pthread_create' with C program in GCC Linux

Fixing undefined reference to 'pthread_create' in Linux

This is a common error while compiling C program in GCC/G++ Linux. This error occurs when you are using pthread_create function to create threads in your programs.

To fix this problem ensure following points

Include header file pthread.h in your program.
Add –lpthread linker flag with compilation command.

1- Include Header file

    #include <stdio.h>
    #include <pthread.h>
    ...
    ...

2- Compile command

    gcc  main.c -o main -lpthread

To more explanation : C program with pthread.h library in Linux.

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