bootstrap: create directory junction target if it does not exist #109574
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the `build/<host_triple>` directory. However, this directory does not always exist. The directory is normally created when downloading the bootstrap tools, but if the user manually configures `build.rustc` and `build.cargo` then the build will fail. This fixes the issue be creating the directory junction target if it does not exist. It's not an issue on non-Windows platforms, because they use symlinks (which are allowed to point to non-existent entities).
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This looks like it's a duplicate of #109111, so it's already fixed in a different way. |
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#104854 added the creation of a
build/hostsymlink that points to thebuild/<host_triple>directory. However, the target directory might not exist, which causes a panic on Windows.The directory is normally created when downloading the bootstrap tools, but if the user manually configures
build.rustcandbuild.cargoon a clean Windows environment then the build will fail with the panicsymlink_dir(..) failed with ..because the target directory hasn't been created yet.This fixes the issue by creating the directory junction target if it does not exist. It's not an issue on non-Windows platforms, because they use symlinks instead of junctions which are allowed to point to non-existent entities (and it will be created later).
r? @wesleywiser