gcc 11 未进行调试。它显示“as：无法识别的选项'--gdwarf-5'”

Question

我在我的机器（linux 20.04）上使用自制软件安装了 gcc 11。而且它没有在 vscode 上运行，如图所示

as：无法识别的选项“--gdwarf-5”

不知道是不是路径问题。因为当我安装brew时它告诉我

Warning: /home/linuxbrew/.linuxbrew/bin/ is not in your PATH.

为了解决这个问题，它建议使用这三个命令

echo '# Set PATH, MANPATH, etc., for Homebrew.' >> /home/hasib/.profile
echo 'eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"' >> /home/hasib/.profile
eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"

所以，我做了那些。我不知道这是否搞砸了路径。我对Linux有点陌生，所以很困惑。只是想在 vs 上运行 gcc-11

这是我的tasks.json 文件：

{
"tasks": [
    {
        "type": "cppbuild",
        "label": "C/C++: g++ build active file",
        "command": "/usr/bin/g++",
        "args": [
            "-fdiagnostics-color=always",
            "-g",
            "${file}",
            "-o",
            "${fileDirname}/${fileBasenameNoExtension}"
        ],
        "options": {
            "cwd": "${fileDirname}"
        },
        "problemMatcher": [
            "$gcc"
        ],
        "group": {
            "kind": "build",
            "isDefault": true
        },
        "detail": "Task generated by Debugger."
    },
    {
        "type": "cppbuild",
        "label": "Build with GCC 11.3.0",
        "command": "/home/linuxbrew/.linuxbrew/bin/g++-11",
        "args": [
            "-fdiagnostics-color=always",
            "-g",
            "-std=c++20",
            "${file}",
            "-o",
            "${fileDirname}/${fileBasenameNoExtension}"
        ],
        "options": {
            "cwd": "${fileDirname}"
        },
        "problemMatcher": [
            "$gcc"
        ],
        "group": "build",
        "detail": "compiler: /home/linuxbrew/.linuxbrew/bin/g++-11"
    },
    {
        "type": "cppbuild",
        "label": "C/C++: g++-10 build active file",
        "command": "/usr/bin/g++-10",
        "args": [
            "-fdiagnostics-color=always",
            "-g",
            "${file}",
            "-o",
            "${fileDirname}/${fileBasenameNoExtension}"
        ],
        "options": {
            "cwd": "${fileDirname}"
        },
        "problemMatcher": [
            "$gcc"
        ],
        "group": "build",
        "detail": "compiler: /usr/bin/g++-10"
    }
],
"version": "2.0.0"
}

启动.json：

{

"version": "0.2.0",
"configurations": []
}

输出gcc-11 --version：

gcc-11 (Homebrew GCC 11.3.0) 11.3.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

输出gdb --version：

GNU gdb (Ubuntu 9.2-0ubuntu1~20.04.1) 9.2
Copyright (C) 2020 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Answer 1

as（GNU 汇编器）是 binutils 软件包的一部分。您需要安装as支持该--gdwarf-5标志的最新版本的 binutils 并确保它是gcc-11.

您可以as通过运行来检查 $PATH 中的是否支持该标志

as --help | grep gdwarf

如果是，则返回包含以下行：

--gdwarf-<N>            generate DWARF<N> debugging information. 2 <= <N> <= 5

如果没有返回，请尝试通过 linuxbrew 安装最新版本的 binutils（如果还没有，请重新启动桌面会话以确保所有终端和 vscode 都获得 $PATH 等的更新）