cmake编译多个文件

#ifndef UNTITLED_HEADER_DEMO_H
#define UNTITLED_HEADER_DEMO_H

void printHello(char *name);

#endif //UNTITLED_HEADER_DEMO_H

//
// Created by gxf on 2020/2/6.
//
#include <stdio.h>

#include "header-demo.h"

void printHello(char *name) {
    printf("hello %s
", name);
}

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "header-demo.h"

int main() {
    char *name = "guanxianseng";
    printHello(name);

    return 0;
}

# main.c
add_executable(main main.c header-demo.h header-demo.c)