架构 arm64 的未定义符号：clang：错误：linker 命令失败，退出代码为 1

Question

当我尝试运行我的 main.cpp 文件时遇到一些问题，仅使用 mac gcc/clang/g++ 编译器。

这是代码：

随机.h

#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <ctime>

void initialize();
float randomFloat(int, int, int);

随机.cpp

#include "random.h"

void initialize() { srand(time(NULL)); }

float randomFloat(int min, int max, int p) {
  int intPart = rand() % (max - (min - 1)) + min;
  if (intPart == max) {
    intPart--;
  }
  float decimal = (float)(rand() % (int)pow(10, p)) / pow(10, p);
  return intPart + decimal;
}

工具.h

#include <iostream>

int askInteger(const char *, bool);

工具.cpp

#include "util.h"

using namespace std;

int askInteger(const char *message, bool onlyPositive) {
  int number;
  if (onlyPositive) {

    while (cout << "Type a correct " << message << ": ",
           !(cin >> number) || number < 0) {
      cerr << "Input error, try again. \n";
      if (cin.fail()) {
        cin.clear();
        cin.ignore();
      }
    }

  } else {
    while (cout << "Type a correct " << message << ": ", !(cin >> number)) {
      cerr << "Input error, try again. \n";
      if (cin.fail()) {
        cin.clear();
        cin.ignore();
      }
    }
  }
  return number;
}

主.cpp

#include "random/random.h"
#include "util/util.h"

using namespace std;

int main() {
  int n, min, max, p;

  n = askInteger("numbers quantity", true);
  p = askInteger("precession", true);
  min = askInteger("min value (included)", false);
  max = askInteger("max value (included)", false);

  while (max <= min) {
    cout << "max value should be greather than " << min << "\n";
    max = askInteger("max value (included)", false);
  }

  initialize();

  for (int i = 0; i < n; i++) {
    cout << randomFloat(min, max, p) << "\n";
  }
}

它给了我这个结果：

Undefined symbols for architecture arm64:
  "askInteger(char const*, bool)", referenced from:
      _main in main-2552a5.o
  "initialize()", referenced from:
      _main in main-2552a5.o
  "randomFloat(int, int, int)", referenced from:
      _main in main-2552a5.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

vscode 应用此命令来运行代码：

Random-Numbers % cd "/Users/user/Downloads/Random-Numbers/" && g++ main.cpp -
o main && "/Users/user/Downloads/Random-Numbers/"main

这是我的项目结构：

在此处输入图像描述

我已经试过了

gcc *.h

gcc -c *.h

g++ *.cpp

g++ -o *.cpp

g++ -c *.cpp

Answer 1

最后！ 我可以运行它

c++ vscode 默认命令与 g++ mac 编译器不匹配

c++ vscode默认运行main的命令：

d "/Users/user/Downloads/Random-Numbers/" && g++ main.cpp -o main && "/Users/user/Downloads/Random-Numbers/"main
user@MacBook-Pro-de-user Random-Numbers % cd "/Users/user/Downloads/Random-Numbers/" && g++ main.cpp -o main && "/Users/
user/Downloads/Random-Numbers/"main

您必须使用以下命令通过终端进行编译：

user@MacBook-Pro-de-user Random-Numbers % g++ -o ./main.exe random/random.cpp util/util.cpp main.cpp
user@MacBook-Pro-de-user Random-Numbers % ./main.exe     

命令 g++