无法使用 bindgen 设置包含路径

问题描述

我正在尝试使用 bindgen 生成对 Qt6 的绑定。我已经按照 this 回答并尝试了这个：-

let bindings = bindgen::Builder::default()
    .header("exclient.hpp")
    .clang_arg("
        -I/usr/include/qt6
        -I/usr/include/qt6/QtCore
        -I/usr/include/qt6/QtGui
        -I/usr/include/qt6/QtQml
        -I/usr/include/qt6/QtQuick
    ")
    .parse_callbacks(Box::new(bindgen::CargoCallbacks))
    .generate()
    .expect("Unable to generate bindings");

但是当我尝试编译它时，出现以下错误：-

  --- stderr
  /home/hilomen/Development/qtrusttest/target/debug/build/exclient3-d982a3579dd42390/out
  warning: 
              -I/usr/include/qt6
              -I/usr/include/qt6/QtCore
              -I/usr/include/qt6/QtGui
              -I/usr/include/qt6/QtQml
              -I/usr/include/qt6/QtQuick
          : 'linker' input unused [-Wunused-command-line-argument]
  exclient.hpp:3:10: Fatal error: 'QObject' file not found
  warning: 
              -I/usr/include/qt6
              -I/usr/include/qt6/QtCore
              -I/usr/include/qt6/QtGui
              -I/usr/include/qt6/QtQml
              -I/usr/include/qt6/QtQuick
          : 'linker' input unused [-Wunused-command-line-argument],err: false
  exclient.hpp:3:10: Fatal error: 'QObject' file not found,err: true

我可以确认 /usr/include/qt6/QtCore/QObject 文件确实存在

解决方法

愚蠢的我，我应该使用 clang_args 而不是 clang_arg

let bindings = bindgen::Builder::default()
    .header("exclient.hpp")
    .clang_args(&[
        "-I/usr/include/qt6","-I/usr/include/qt6/QtCore","-I/usr/include/qt6/QtGui",])
    .parse_callbacks(Box::new(bindgen::CargoCallbacks))
    .generate()
    .expect("Unable to generate bindings");