!ayCRiZriCVtuCUpeLp:nixos.org

Nix Cross Compiling

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4 Jul 2025
@dramforever:matrix.orgdramforevernote that i haven't tested this, just typed it out03:15:43
@dramforever:matrix.orgdramforever and the reason it's compiling mimalloc is just something depends on mimalloc 03:16:04
@freexploit:trafkin.com@freexploit:trafkin.comRedacted or Malformed Event03:16:30
@freexploit:trafkin.com@freexploit:trafkin.comRedacted or Malformed Event03:17:48
@dramforever:matrix.orgdramforever final.lib.fakeHash 03:21:20
@dramforever:matrix.orgdramforeveror just leave it empty??03:21:35
@dramforever:matrix.orgdramforever* or just leave it empty?03:21:36
@thewholeworldisburning123:rougebordeaux.xyzmissbehaves I'm trying to target a specific RISC-V toolchain for cross compilation, which is using arch rv32i and abi ilp32. I was using riscv32-none-elf but sadly it has differences and does not give me the format of binary i need. How do i build and configure the riscv toolchainfor my specific arch/abi ? 09:53:00
@thewholeworldisburning123:rougebordeaux.xyzmissbehaves I'm new to Nix, and I'm trying to target a specific RISC-V toolchain for cross compilation, which is using arch rv32i and abi ilp32. I was using riscv32-none-elf but sadly it has differences and does not give me the format of binary i need. How do i build and configure the riscv toolchainfor my specific arch/abi ? 10:03:04
@qyliss:fairydust.spaceAlyssa Ross You can set gcc.arch and some other options in your platform attrset. 10:12:45
@qyliss:fairydust.spaceAlyssa RossHave a look at machineFlags in pkgs/build-support/cc-wrapper/default.nix for what you can set10:14:32
@dramforever:matrix.orgdramforever just demo'd nix to a friend, and i want to thank the entirety of #cross-compiling:nixos.org for maintaining my go to demo for nix and nixpkgs so it mostly works: cross compiling something in a single command 12:11:01
@dramforever:matrix.orgdramforever* just demo'd nix to a coworker, and i want to thank the entirety of #cross-compiling:nixos.org for maintaining my go to demo for nix and nixpkgs so it mostly works: cross compiling something in a single command12:11:13
@alexfmpe:matrix.orgalexfmpedepending on what the demo is, might want to add it to one of the release-foo.nix jobs to watch for regressions though I'm not sure how to actually lookup or be notified of failures there12:32:19
@dramforever:matrix.orgdramforeverit's a bit of a weird thing since if i add it to release-*, i can't demo it anymore14:11:06
@dramforever:matrix.orgdramforeverit'll just download from cache.nixos.org and be way less impressive14:11:21
@grimmauld:grapevine.grimmauld.deGrimmauld (any/all) you could add --rebuild in your demo 14:13:48
@dramforever:matrix.orgdramforever😅14:36:44
@dramforever:matrix.orgdramforeveryeah probably14:43:34
@freexploit:trafkin.com@freexploit:trafkin.comRedacted or Malformed Event15:09:11
@freexploit:trafkin.com@freexploit:trafkin.comRedacted or Malformed Event15:09:26
@emilazy:matrix.orgemilyjemalloc is deprecated upstream now anyway, so it's the better choice15:33:59
@freexploit:trafkin.com@freexploit:trafkin.comRedacted or Malformed Event15:34:55
@freexploit:trafkin.com@freexploit:trafkin.comRedacted or Malformed Event15:35:07
@freexploit:trafkin.com@freexploit:trafkin.comRedacted or Malformed Event15:35:12
@winston:milli.ng@winston:milli.ng left the room.15:40:53
@alexfmpe:matrix.orgalexfmpe seems there's also a --offline 15:46:57
@alexfmpe:matrix.orgalexfmpehttps://nix.dev/manual/nix/2.28/command-ref/new-cli/nix3-build.html?highlight=--rebuild#opt-offline15:46:59
@sananatheskenana:matrix.orglzcuntHey there17:31:52
@sananatheskenana:matrix.orglzcuntI've asked this question here before but now after rebasing it occurs again17:32:35

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