Can't build linux-headers on armv6l #107386
Comments
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I guess that this patch should only be enabled on armv7l then. Truthfully that PR was just changes proposed/written by others and someone else is probably more qualified wrt binutils to say what the correct thing to do would be. |
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I don't think it's an armv6l vs. armv7l thing: There's a possibility that the issue is that I'm trying to build on a Pi 4, which is actually a 64-bit machine, with a 64-bit kernel. To test this, I copied the linux-headers closure, and all of its deps, to a Pi 0 W (which is actually armv6l), and got the same bug. It is still possible that the issue arises due to the Pi 4 miscompiling one of the dependences. I'm doing a full build on the Pi 0 to rule this out, but of course that could take a while. |
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Alright, |
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Thanks for the testing @Gaelan. I'm not sure what's more important, cross compiling to arm32 or native compiling! Hopefully @Ericson2314 can shed some light here. |
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What a mess! I guess the patch fixes some relocations breaks others. If we could make minimal programs for both that would be nice, but that's a lot of work. |
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Ah I see @expipiplus1 already minimized in https://sourceware.org/bugzilla/show_bug.cgi?id=16177#c9, and we can cross-reference Jessica's patch on this issue too. So maybe once we minimize this issue we'll have enough combinations to try that it shouldn't be so bad. |
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I have this problem on armv7l as well, on the novena board. 5.9.8 headers required for building nix fail. |
I'm running into the exact same issue using arm emulation via |
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IIRC GHC was the only package affected by the bug in my NixOS closure when I had it running on an armv7 machine back in 2019 and it was also happening on native builds; had nothing to do with musl or cross. Couldn't we just make a special binutils with the patch for GHC and the (at worst) handful of other programs which need it? |
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Hello everyone, Here what I've done: Using my Pi4 with 32bit kernel: However, compiling our friendly greeting: Seems like this PR has not been all to fix the broken Happy to update the official Wiki as soon as I've things working ... also including the hydra tarball. |
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@stefandeml try cherry-picking commit from #129004 |
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This issue has been mentioned on NixOS Discourse. There might be relevant details there: https://discourse.nixos.org/t/new-aarch64-and-armv7l-linux-omg-builders/1010/8 |
Thanks 🎉. That definitely helped but failing at stage4 now: Hmm, looks like the OS killed it? - maybe OOM? |
I had no issues building the entire system (with a few tweaks) on armv7l virtual machine with 4 cores and 4G of RAM. |
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Yes, OOM often produces exactly this "killed" log line. |
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Also make sure you have zram swap (perhaps even with zstd) if you're running into OOM issues. It's free additional RAM space. |
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Hitting the exact same bug when cross-compiling to armv7l now, in packages that have PIC disabled (zfs) |
Describe the bug
stdenv.__bootPackages.linuxHeaders(and, therefore, pretty much any package) fails to build on armv6l.To Reproduce
Steps to reproduce the behavior:
cd path/to/nixpkgs; nix-build . --arg system '"armv6l-linux"' -A stdenv.__bootPackages.linuxHeadersAdditional context
The segfault comes from fixdep, which is invoked by the Linux kernel build system.
Here's a minimal C program that segfaults, when compiled with the
ccfromnix-shell . --arg system '"armv6l-linux"' -A stdenv.__bootPackages.linuxHeaders:A git bisect reveals that the faulty commit is b3640e0 (#103183).
Notify maintainers
@Ericson2314, maintainer of binutils (since that's what seems to be the culprit here)
@expipiplus1, author of #103183
Metadata
Please run
nix-shell -p nix-info --run "nix-info -m"and paste the result."aarch64-linux"Linux 4.19.118, NixOS, 21.03.20201220.9cb4d2f (Okapi)yesyesnix-env (Nix) 2.4pre20201201_5a6ddb3"nixos-20.09pre225673.8ba41a1e149""nixos-20.09pre224185.ed755a65570"/nix/var/nix/profiles/per-user/root/channels/nixosMaintainer information:
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