在 vscode 上找不到“openssl/crypto.h”文件

即使我将包含路径添加到 openssl，我也收到以下编译错误。我在 MAC 上使用 vscode。你能告诉我如何修复它吗？

Error

main.cpp:3:10: fatal error: 'openssl/crypto.h' file not found
#include <openssl/crypto.h>
         ^
1 error generated.

main.cpp

#include <iostream>

#include <openssl/crypto.h>

using namespace std;

int main()
{
    cout << "hoge" << endl;
}

.vscode/tasks.json

{
    "version": "0.1.0",
    "command": "g++",
    "isShellCommand": true,
    "args": ["-std=c++14", "-O2", "-l", "boost_system", "-l", "boost_thread", "-o", "test", "-g",
        "main.cpp"
    ],
    "showOutput": "always"
}

.vscode/c_cpp_properties.json

{
    "configurations": [
        {
            "name": "Mac",
            "includePath": [
                "/usr/include",
                "/usr/local/include",
                "/usr/local/opt/openssl/include"
            ],
            "browse": {
                "limitSymbolsToIncludedHeaders": true,
                "databaseFilename": "",
                "path": [
                    "/usr/include",
                    "/usr/local/include",
                    "/usr/local/opt/openssl/include"
                ]
            }
        }
    ]
}

.vscode/c_cpp_properties.json

$ which openssl
/usr/bin/openssl

$ ls  /usr/local/opt/openssl/include/openssl | grep crypto.h
crypto.h

Update 1

我发现了类似的问题，但仍然没有找到适合我的解决方案。

在 OS X El Capitan 上使用 libssl 编译 C 程序？ https://stackoverflow.com/questions/33530865/compiling-c-programs-using-libssl-on-os-x-el-capitan

如何将 OpenSSL 与 GCC 一起使用？ https://stackoverflow.com/questions/1894013/how-to-use-openssl-in-gcc

http://qiita.com/marumaru/items/ca801c957986302f6fe6 http://qiita.com/marumaru/items/ca801c957986302f6fe6

Update 2

我尝试使用 g++ 进行编译，但它也不起作用。我的 Mac 是 OS X El Capitan 版本10.11.6

$ g++ main.cpp -L/usr/local/opt/openssl/lib -lssl -lcrypto -o test
main.cpp:3:10: fatal error: 'openssl/crypto.h' file not found
#include <openssl/crypto.h>
         ^
1 error generated.

Update 3

问题解决了。我添加了 -I 和 -L 选项。

g++ main.cpp -I/usr/local/opt/openssl/include -L/usr/local/opt/openssl/lib -lssl -lcrypto -o test

另一个解决方案： 在 Mac 上（但这也应该适用于其他操作系统），我首先更新了 openssl：

brew upgrade openssl

然后设置以下环境变量：

export LDFLAGS="-L/usr/local/opt/openssl/lib"
export CPPFLAGS="-I/usr/local/opt/openssl/include"

我通过简单的尝试得到了：

brew info openssl

我仍然需要更新tasks.json，但现在更改有效（clang for c）：

{
    "tasks": [
        {
            "type": "shell",
            "label": "clang build active file",
            "command": "/usr/bin/clang",
            "args": [
                "-g",
                "${file}",
                "-o",
                "${fileDirname}/${fileBasenameNoExtension}",
                "-I/usr/local/opt/openssl/include",
                "-L/usr/local/opt/openssl/lib",
                "-lssl",
                "-lcrypto"
            ],
            "options": {
                "cwd": "/usr/bin"
            }
        }
    ],
    "version": "2.0.0"
}