Cannot find "/usr/bin/arm-none-eabi-gcc"

I realize that this is a simple question, but with a not so simple answer.

Since a few weeks I'm using the vscode flatpak. I need to build my software with a cross compiler, mostly `arm-none-eabi-gcc`. It is installed on my system, but from with vscode it cannot be found. So, my question:
How can I enable `/usr/bin/arm-none-eabi-gcc` and friends from vscode?

首先调查 VS Code Flatpak 沙箱如何暴露主机上的可执行文件，并以报告中的 `/usr/bin/arm-none-eabi-gcc` 路径和集成构建工作流作为切入点。当安装在主机上的交叉编译器及相关工具可以从 VS Code 中找到并使用时，即视为完成。

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