VSCode编译C++代码时找不到onnxruntime头文件求助

我是C++新手，使用VSCode和Ubuntu 18.04系统，尝试通过ONNX Runtime API部署神经网络模型。仅测试引入ONNX Runtime头文件的代码时出现编译错误，提示找不到onnxruntime/core/session/onnxruntime_cxx_api.h文件。

我的ONNX Runtime include目录为/home/jiahao/git/onnxruntime/include/，已将其添加到tasks.json和c_cpp_properties.json中，且Ctrl+点击头文件能跳转至正确文件，但编译仍失败。相关代码、错误信息及配置文件如下：

测试代码 #

#include <iostream>
#include <ctime>
#include <vector>
#include <onnxruntime/core/session/onnxruntime_cxx_api.h>

using namespace std;

int main() {
  auto start_time = clock();
  cout << "hello world" << endl;
  Ort::Env env(ORT_LOGGING_LEVEL_WARNING, "test");
  auto end_time = clock();
  printf("Proceed exit after %.2f seconds\n", static_cast<float>(end_time - start_time) / CLOCKS_PER_SEC);
  printf("Done!\n");
  return 0;
}

编译错误输出 #

[test.cc 2023-01-05 10:08:28.381]
,,test.cc:4:10: fatal error: onnxruntime/core/session/onnxruntime_cxx_api.h: no such file or directory
 #include <onnxruntime/core/session/onnxruntime_cxx_api.h>
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

配置文件 #

c_cpp_properties.json #

{
  "configurations": [
    {
      "name": "linux-gcc-x64",
      "includePath": [
        "${workspaceFolder}/**",
        "/home/jiahao/git/onnxruntime/include/",
        "/home/jiahao/git/onnxruntime/include/**"
      ],
      "compilerPath": "/usr/bin/gcc",
      "cStandard": "${default}",
      "cppStandard": "${default}",
      "intelliSenseMode": "linux-gcc-x64",
      "compilerArgs": [
        ""
      ]
    }
  ],
  "version": 4
}

tasks.json #

{
    "version": "2.0.0",
    "tasks": [
        {
            "type": "cppbuild",
            "label": "C/C++: g++ 生成活动文件",
            "command": "/usr/bin/g++",
            "args": [
                "-fdiagnostics-color=always",
                "-g",
                "${file}",
                "-I", "/home/jiahao/git/onnxruntime/include/",
                "-o",
                "${fileDirname}/${fileBasenameNoExtension}"

            ],
            "options": {
                "cwd": "${fileDirname}"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "detail": "编译器: /usr/bin/g++"
        }
    ]
}

解决办法 #

1. 验证头文件实际存在
   先确认/home/jiahao/git/onnxruntime/include/onnxruntime/core/session/onnxruntime_cxx_api.h这个文件是否真实存在。如果是从源码编译ONNX Runtime，需确保编译过程完成且头文件已生成到指定目录；如果是下载预编译包，确认包内包含完整的头文件结构。

2. 调整编译参数
   尝试修改tasks.json中的-I参数，去掉路径末尾的斜杠，改为-I/home/jiahao/git/onnxruntime/include（合并成一个参数），避免空格或格式问题导致编译器无法识别路径。也可以添加-I/home/jiahao/git/onnxruntime/include/onnxruntime来直接指向头文件所在的子目录。

3. 终端手动编译排查
   跳过VSCode配置，直接在终端执行编译命令测试：

   g++ -g test.cc -I /home/jiahao/git/onnxruntime/include -o test
   

   如果该命令成功，说明VSCode的tasks.json配置存在格式问题；如果仍失败，说明头文件路径或ONNX Runtime安装有问题，需重新检查文件结构或重新编译/下载ONNX Runtime。

4. 确认版本匹配
   确保使用的ONNX Runtime头文件与库文件版本一致，且对应Ubuntu 18.04的x64架构。源码编译时需指定正确的编译参数，确保生成适合当前系统的头文件和库。

内容的提问来源于stack exchange，提问作者Toby_Xiang