ubuntu 編譯C++ error: ‘syscall’ was not declared in this scope

明明已經加了頭文件

#include <sys/syscall.h>
#include <sched.h>
#include <sys/resource.h>

 

編譯仍是報錯

error: ‘syscall’ was not declared in this scope

參考https://blog.csdn.net/kl222/article/details/17025367

ubuntu中syscall定義是放在頭文件unistd.h中的。

再添加頭文件unistd.h便可

#include <unistd.h> 

編譯ok.