Github 操作路径未更新

Question

Right now, I'm trying to build a tool from source and use it to build a C++ project. I'm able to extract the tar file (gcc-arm-none-eabi). But, when I try to add it to path (using $GITHUB_PATH , not add-path ), the path doesn't apply on my next action and I can't build the file. The error states that it can't find the gcc-arm-none-eabi toolset, which means that it didn't go to path.

Here's the script for the entrypoint of the first function (make is ran in the next action to allow for path to apply)

echo "Downloading ARM Toolchain"
# The one from apt isn't updated so I have to build from source
curl -L https://developer.arm.com/-/media/Files/downloads/gnu-rm/10-2020q4/gcc-arm-none-eabi-10-2020-q4-major-x86_64-linux.tar.bz2 -o gcc-arm-none-eabi.tar.bz2
tar -xjf gcc-arm-none-eabi.tar.bz2

echo "/github/workspace/gcc-arm-none-eabi-10-2020-q4-major/bin" >> $GITHUB_PATH

I can't even debug by seeing what's in the path because running echo $(PATH) just says that PATH cannot be found. What should I do?

Answer 1

I can't even debug by seeing what's in the path because running echo $(PATH) just says that PATH cannot be found. What should I do?

First, PATH is not a command so if you want to print its value, it would be something like echo "${PATH}" or echo "$PATH"

Then, if you want to add a value to an existing environment variable, it would be something like

export PATH="${PATH}:/github/workspace/gcc-arm-none-eabi-10-2020-q4-major/bin"

EDIT: seems not a valid way to add something to the path using Github Actions, meanwhile it seems correct in the question. To get more details: https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-commands-for-github-actions#adding-a-system-path . Thanks to Benjamin W. for pointing this out in the comments.

Finally I think it would be a better fit if you use a docker image that already contains that kind of dependancies (you could easily write your own Dockerfile if this image doesn't already exists). Github action is designed to use docker (or OCI containers) image that contains the dependancies you need to perform your build actions. You should take a look here: https://docs.github.com/en/free-pro-team@latest/actions/creating-actions/dockerfile-support-for-github-actions