| 5 Aug 2025 |
 aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | In reply to @aleksana:mozilla.org
For anyone interested in LoongArch64, Loongson Hobbyists Community is group ordering motherboards and laptops for overseas developers, with a relatively low price.
https://docs.google.com/forms/d/e/1FAIpQLSf53--4yWf_yMYpcaJAx-rSeGiWn5ky5Nk0wwQdX9vw4gCDYg/viewform Sorry, that was the wrong link. Fixed. | 04:57:15 |
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| 6 Aug 2025 |
 benmkw | Hi, i am trying to get a minimal mainline linux build working on https://linux-sunxi.org/Xunlong_Orange_Pi_3 and currently i cannot get it do do anything, cant check uart, but no led/ no hdmi output, the config is very minimal and it seems upstream support in nix is decent so maybe its sth. easy to spot? https://paste.rs/v3kWt.txt thanks :) (the board work with dietpi so i can rule out a hardware issue) | 11:24:52 |
 dramforever | aarch64 is not exotic :P try #nixos-on-arm:nixos.org | 11:28:20 |
| benmkw | Haha that sounds promising, will do 👍 | 11:33:19 |
 alex taxia | who's nick sauce | 16:23:07 |
 j-k | Well, I wondered why I had to do so many rebuilds. Turns out the prebuilt sdcard image for visionfive v2 doesn't have the 2 suggested riscv caches configured. Not sure why it took me this long to think about checking (and replacing) /etc/nix/nix.conf
going much quicker now | 19:30:35 |
| 8 Aug 2025 |
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| 25 Aug 2025 |
|  Marie joined the room. | 12:39:47 |
| Marie | Hi, I'm trying to get a cross compiler for 32-Bit PowerPC, has anyone had luck in getting that to work?
I've tried nix-build --expr '(import ./. { crossSystem.config = "powerpc-unknown-linux-gnu"; }).stdenv.cc.cc.libgcc.stdenv.cc.cc'
(./. being a nixpkgs checkout)
But that build fails with a linker error which I don't really understand. | 13:55:49 |
| Marie | Download log.txt | 13:55:49 |
 Alyssa Ross | That looks like possibly a GCC internal problem? I'd see if it can be reproduced outside Nix to confirm. | 14:07:44 |
| Marie | So I tried to build gcc with our flags outside of nix, which resulted in
/home/marie/arch-build/compiler/powerpc-unknown-linux-gnu/bin/ld: cannot find crti.o: No such file or directory
/home/marie/arch-build/compiler/powerpc-unknown-linux-gnu/bin/ld: cannot find -lc: No such file or directory
/home/marie/arch-build/compiler/powerpc-unknown-linux-gnu/bin/ld: cannot find crtn.o: No such file or directory
When I apply the same hack as we do here (https://github.com/NixOS/nixpkgs/blob/dbfdaa1a1cef034a790d0287bdd885ee78ecb11c/pkgs/development/compilers/gcc/common/libgcc-buildstuff.nix#L6-L37), it results in the same error.
I was also to reproduce the same thing in a podman container running arch linux. | 18:38:21 |
 K900 | Yeah not going to happen, you need cc-wrapper for this | 18:38:44 |
| Marie | you mean to compile gcc? | 18:40:46 |
| Marie | So I tried to build gcc with our flags outside of nix, which resulted in
/home/marie/arch-build/compiler/powerpc-unknown-linux-gnu/bin/ld: cannot find crti.o: No such file or directory
/home/marie/arch-build/compiler/powerpc-unknown-linux-gnu/bin/ld: cannot find -lc: No such file or directory
/home/marie/arch-build/compiler/powerpc-unknown-linux-gnu/bin/ld: cannot find crtn.o: No such file or directory
When I apply the same hack as we do here (https://github.com/NixOS/nixpkgs/blob/dbfdaa1a1cef034a790d0287bdd885ee78ecb11c/pkgs/development/compilers/gcc/common/libgcc-buildstuff.nix#L6-L37), it results in the same error as in the nix build.
I was also to reproduce the same thing in a podman container running arch linux. | 18:42:09 |
| Marie | I just used a nix-shell -p to try to build a cross binutils and gcc | 18:43:47 |
| Marie | that hack seems to work for ppc64 but not for 32 | 18:44:16 |
| Marie | i think i found a way to make it work, no idea if it makes stuff explode, but it makes stuff compile, will have another look tomorrow | 22:03:06 |
| 27 Aug 2025 |
| Marie | So this platform has a CPU bug which needs a gcc and glibc patch for SMP to work reliably, is there a way to apply these without ending up in override hell? | 10:30:44 |
