OpenMP 未定义对“_CRT_fenv”和“_setargv”的引用

问：

我正在尝试运行这个简单的 OpenMP 示例：

#include <iostream>
#include <omp.h>

using namespace std;

int main()
{
    switch(_OPENMP) {
    case 200805:
        cout << "OpenMP version 3.0 has macro value of 200805" << endl;
        break;
    case 200505:
        cout << "OpenMP version 2.5 has macro value of 200505" << endl;
        break;
    default:
        cout << "Unrecognized OpenMP version of " << _OPENMP << endl;
        break;
    }
    return 0;
}

我收到两个错误：undefined reference to

c:/mingw/bin/../lib/gcc/mingw32/5.3.0/../../../crt2.o:(.text+0x1ee): undefined reference to `_CRT_fenv'
c:/mingw/bin/../lib/gcc/mingw32/5.3.0/../../../crt2.o:(.text+0x1fb): undefined reference to `_setargv'
collect2.exe: error: ld returned 1 exit status

我已经添加了链接库和其他编译器选项（顺便说一句，我正在使用 code：：blocks ）。libgomp-1.dll-fopenmp