Undefined reference to pthread_create

Question

I have this code:

#include 
#include 

void* cuoco(void* arg)
{
    fprintf(stderr,\"Inizio codice cuoco\\n\");
    fprintf(s         


        

Answer 1

In Eclipse, you should add string pthread.

Project -> Properties -> C/C++ Build -> Settings -> Tool Settings -> GCC Linker -> Libraries -> Libraries (-l) -> Add -> pthread

After this, you can Build your project.

Answer 2

Use the following command:

gcc -pthread -o main main.c

Answer 3

Without seeing the compiler command, I suspect -lpthread is not at end. Libraries need to be placed at end of the compiler command:

gcc main.c -lpthread

However, use -pthread instead of -lpthread, as -pthread may add other settings (like defining the macro _REENTRANT for example).

Answer 4

found the solution guys :D just go to settings >> compiler >> linker tab >>add lib

go to drive and go to lib folder and find x86_64_linux_gnu and find pthread enjoy :)

Answer 5

Use -lpthread as the last compiler flag.

example: gcc -o sample sample.c -lpthread