如何将库（SDL2）链接到C++；使用VSCode和CMake（Windows）的项目 这里是这样的：我想为项目使用SDL，但是从头开始创建C++项目是新的，没有办法将这个库链接到我的项目。这是因为我对CMake以及tasks.json和CMakeLists.txt文件缺乏了解

在谷歌搜索了几个小时后，我现在拥有了什么

main.cpp

#include <iostream>
#include "SDL/inc/SDL.h"

int main() {
    const int image_width = 200;
    const int image_height = 100;

    std::cout << "P3\n" << image_width << ' ' << image_height << "\n255\n";

    for (int j = image_height-1; j >= 0; --j) {
        std::cerr << "\rScanlines remaining: " << j << ' ' << std::flush;
        for (int i = 0; i < image_width; ++i) {
            auto r = double(i) / image_width;
            auto g = double(j) / image_height;
            auto b = 0.2;
            int ir = static_cast<int>(255.999 * r);
            int ig = static_cast<int>(255.999 * g);
            int ib = static_cast<int>(255.999 * b);
            std::cout << ir << ' ' << ig << ' ' << ib << '\n';
        }
    }
    std::cerr << "\nDone.\n";
}

tasks.json：

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "SuppressTaskName": true,
    "type": "shell",
    "options": {
        "cwd": "${workspaceRoot}/build"
    },
    "tasks": [
        {
            "label": "cmake",
            "command": ["cmake -G 'Unix Makefiles' -DCMAKE_BUILD_TYPE=Debug .."]
        },
        {
            "label": "make",
            "command": ["make -j 8tasks.json"],
            "group": {
                "kind": "build",
                "isDefault": true,
            }
        }
    ]
}

c_cpp_properties.json：

{
    "configurations": [
        {
            "name": "Win32",
            "includePath": [
                "${workspaceFolder}/**",
                "${workspaceFolder}/SDL/inc",
                "${workspaceFolder}/SDL/lib/x64"
            ],
            "defines": [
                "_DEBUG",
                "UNICODE",
                "_UNICODE"
            ],
            "windowsSdkVersion": "10.0.18362.0",
            "compilerPath": "C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/VC/Tools/MSVC/14.24.28314/bin/Hostx64/x64/cl.exe",
            "cStandard": "c11",
            "cppStandard": "c++17",
            "intelliSenseMode": "msvc-x64"
        }
    ],
    "version": 4
}

最后是SDL文件夹中的CMakeList，该文件夹位于项目根文件夹中，其中.cpp为：

message("-- Linking SDL")
add_library(SDL2 SDL2.dll)
set_target_properties(SDL2 PROPERTIES LINKER_LANGUAGE CXX)

（代码在库文件之前编译得很好）

编译器是这样说的：

make[1]: Entering directory '/cygdrive/d/Development/ArchTracer/build'
make[2]: Entering directory '/cygdrive/d/Development/ArchTracer/build'
make[2]: Leaving directory '/cygdrive/d/Development/ArchTracer/build'
[ 33%] Built target SDL2
make[2]: Entering directory '/cygdrive/d/Development/ArchTracer/build'
make[2]: Leaving directory '/cygdrive/d/Development/ArchTracer/build'
make[2]: Entering directory '/cygdrive/d/Development/ArchTracer/build'
[ 66%] Linking CXX executable ArchTracer.exe
/usr/lib/gcc/x86_64-pc-cygwin/9.3.0/../../../../x86_64-pc-cygwin/bin/ld: /usr/lib/gcc/x86_64-pc-cygwin/9.3.0/../../../../lib/libcygwin.a(libcmain.o): in function `main':
/usr/src/debug/cygwin-3.1.4-1/winsup/cygwin/lib/libcmain.c:37: undefined reference to `WinMain'
/usr/src/debug/cygwin-3.1.4-1/winsup/cygwin/lib/libcmain.c:37:(.text.startup+0x7f): relocation truncated to fit: R_X86_64_PC32 against 
undefined symbol `WinMain'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/ArchTracer.dir/build.make:85: ArchTracer.exe] Error 1
make[2]: Leaving directory '/cygdrive/d/Development/ArchTracer/build'
make[1]: *** [CMakeFiles/Makefile2:73: CMakeFiles/ArchTracer.dir/all] Error 2
make[1]: Leaving directory '/cygdrive/d/Development/ArchTracer/build'
make: *** [Makefile:84: all] Error 2
The terminal process terminated with exit code: 1

我想了解如何告诉cmake include文件在哪里，lib在哪里。 我已经告诉VSCode在哪里可以找到这些

有人能帮忙吗

---

非常感谢：）

欢迎来到Stack Overflow，这是一个很好的、有文档记录的问题！

add_library（）

命令接受源文件作为参数，而不是已经生成的DLL文件。请参阅这些，以了解在CMake项目中包含外部库的方法。这将有助于进行必要的CMake更改：关键部分是第一个

CMakeLists.txt

欢迎使用堆栈溢出，这是一个很好的、有充分文档证明的问题！

add_library（）

命令接受源文件作为参数，而不是已经生成的DLL文件。请参阅以下内容，了解在CMake项目中包含外部库的方法。这将有助于进行必要的CMake更改：关键部分是第一个

CMakeLists.txt

make[1]: Entering directory '/cygdrive/d/Development/ArchTracer/build'
make[2]: Entering directory '/cygdrive/d/Development/ArchTracer/build'
make[2]: Leaving directory '/cygdrive/d/Development/ArchTracer/build'
[ 33%] Built target SDL2
make[2]: Entering directory '/cygdrive/d/Development/ArchTracer/build'
make[2]: Leaving directory '/cygdrive/d/Development/ArchTracer/build'
make[2]: Entering directory '/cygdrive/d/Development/ArchTracer/build'
[ 66%] Linking CXX executable ArchTracer.exe
/usr/lib/gcc/x86_64-pc-cygwin/9.3.0/../../../../x86_64-pc-cygwin/bin/ld: /usr/lib/gcc/x86_64-pc-cygwin/9.3.0/../../../../lib/libcygwin.a(libcmain.o): in function `main':
/usr/src/debug/cygwin-3.1.4-1/winsup/cygwin/lib/libcmain.c:37: undefined reference to `WinMain'
/usr/src/debug/cygwin-3.1.4-1/winsup/cygwin/lib/libcmain.c:37:(.text.startup+0x7f): relocation truncated to fit: R_X86_64_PC32 against 
undefined symbol `WinMain'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/ArchTracer.dir/build.make:85: ArchTracer.exe] Error 1
make[2]: Leaving directory '/cygdrive/d/Development/ArchTracer/build'
make[1]: *** [CMakeFiles/Makefile2:73: CMakeFiles/ArchTracer.dir/all] Error 2
make[1]: Leaving directory '/cygdrive/d/Development/ArchTracer/build'
make: *** [Makefile:84: all] Error 2
The terminal process terminated with exit code: 1