Can not find `pthread_setaffinity_np'?

问题

I used -pthread for gcc compiler, but still can not find this API. any suggestion?

回答1:

It's a non-standard GNU extension, as the manual and the suffix _np will tell you, so include the header like this:

#define _GNU_SOURCE
#include <pthread.h>

回答2:

Your command must looks like this way...

$ > gcc -lpthread YourProg.c

if it is .cpp

then >>

$ > g++ -lpthread YourProg.cpp

回答3:

because it is not a posix function,so maybe you can use it in somewhere,and you can not use it in some other where. So carefully use it.

来源：https://stackoverflow.com/questions/7269839/can-not-find-pthread-setaffinity-np