明明已经加了头文件
#include <sys/syscall.h> #include <sched.h> #include <sys/resource.h>
编译还是报错
error: ‘syscall’ was not declared in this scope
参考https://blog.csdn.net/kl222/article/details/17025367
ubuntu中syscall定义是放在头文件unistd.h中的。
再添加头文件unistd.h即可
#include <unistd.h>
编译ok.
ubuntu 编译C++ error: ‘syscall’ was not declared in this scope
原文：https://www.cnblogs.com/tid-think/p/11464721.html