BuildXL

Microsoft Build Accelerator (by microsoft)

BuildXL Alternatives

Similar projects and alternatives to BuildXL

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better BuildXL alternative or higher similarity.

BuildXL reviews and mentions

Posts with mentions or reviews of BuildXL. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-09-12.
  • We built the fastest CI in the world. It failed
    11 projects | news.ycombinator.com | 12 Sep 2023
    Seems they came up with a way to scale up build toolchains with BuildXL[0]

    Doesn't seem fully baked yet though

    [0]: https://github.com/microsoft/BuildXL

  • Using Landlock to Sandbox GNU Make
    10 projects | news.ycombinator.com | 7 Aug 2022
    > With regards to chroot, I stand corrected. I knew it was a tree of symlinks, but I thought it was also more than that because symlinks alone don't seem like a sandbox. Honestly, Cosmopolitan's system appears to be more of a sandbox than that.

    To be totally clear: the tree of symlinks thing is a fallback, used only when lacking platform support or when sandboxing is explicitly turned off [0]. On Linux, the normal sandboxing strategy is to use namespaces, like most container runtimes. On Mac it apparently uses sandbox-exec (some opaque Apple tool), as was mentioned above. Chroot, being both non-POSIX, requiring root access on many systems, and not providing the necessary facilities is not really a great fit -- which I assume is why it's not used.

    There was experimental Windows sandbox support at one point [1] based on how MS does it for BuildXL (their own build tool for giant monorepos) [2]. Unfortunately it doesn't seem to be maintained, and under the hood it's kinda ugly -- it actively rewrites code in-memory to intercept calls to the Win32 APIs [3], which was apparently the cleanest/best way MS could come up with. However, from Bazel's POV it works in a roughly similar way -- you spawn subprocesses under a supervisor, which is in charge of spinning up whatever the target process is with restrictions on time/memory usage/file access.

    On the "sandbox in the interpreter" thing: what kind of checks are you envisioning? It seems like putting checks at that level would end up leaving a lot out -- the goal of any build system is to eventually spawn an arbitrary process (Python, gcc, javac, some shell script, etc.) and so even with extensive checks in starlark you'd end up with accidental sandbox breaks all over the place. For pure starlark rules you could e.g. check that there are no inputs from /usr, but even then if gcc does it implicitly, you're SOL. Or am I thinking of the wrong kind of checks?

    [0] https://bazel.build/docs/sandboxing#sandboxing-strategies

    [1] https://github.com/bazelbuild/bazel/issues/5136#issuecomment...

    [2] https://github.com/microsoft/BuildXL/blob/master/Documentati...

    [3] https://github.com/microsoft/Detours/wiki

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2
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6 days ago
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