!ayCRiZriCVtuCUpeLp:nixos.org

Nix Cross Compiling

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23 May 2025
@trofi:matrix.orgtrofiI thin it should auto-load .py gdb script for target libstdc++ when yoiu load c++ based programs to debug14:53:59
@trofi:matrix.orgtrofi /nix/store/7c0v0kbrrdc2cqgisi78jdqxn73n3401-gcc-14.2.1.20250322-lib/lib/libstdc++.so.6.0.33-gdb.py 14:55:05
@trofi:matrix.orgtrofi And given that it does not work on gdb gdb I think it is missing /lib subdir. 14:59:06
24 May 2025
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@neobrain:matrix.orgneobrain Hi! Having a bit of trouble getting off the ground with cross-compiling in a nix-shell. I'm working on a mixed-architecture project (main component runs on ARM64, but additionally some x86-64 executables must be built) and I can't use binfmt_misc/qemu.
Do nix/nixpkgs still provide a simple way to install a cross-compiler (built for ARM64 and targeting x86-64) that I can manually invoke in a CMakeToolchain?
14:46:06
@neobrain:matrix.orgneobrain ... of course as usual, after an hour of looking the answer presents itself right after asking: x86Pkgs.buildPackages.gcc seems to be what I'm looking for (instead of x86Pkgs.gcc) 14:48:31
@neobrain:matrix.orgneobrain * ... of course as usual, after an hour of looking the answer presents itself right after asking: pkgsCross.gnu64.buildPackages.gcc seems to be what I'm looking for (instead of pkgsCross.gnu64.gcc) 14:48:58
@neobrain:matrix.orgneobrainAny idea how I can build a sysroot with libc/libstdc++ headers? I know I need to use pkgs.buildEnv, but I'm struggling to find the right packages that contain the headers18:15:44
@neobrain:matrix.orgneobrain Looks like libgcc.out is the one 18:37:28
@neobrain:matrix.orgneobrain * Looks like libgcc.out is the one, or rather pkgs.pkgsCross.gnu64.gcc-unwrapped for the cross-compiler 18:45:41
27 May 2025
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31 May 2025
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1 Jun 2025
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5 Jun 2025
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@grimmauld:grapevine.grimmauld.deGrimmauld (any/all) I wanted to build https://github.com/NixOS/nixpkgs/pull/414169 on android cross because upstream did some android changes and figured i might as well try.
However: both elfutils and stdenv is completely broken and does not build
08:43:59
@grimmauld:grapevine.grimmauld.deGrimmauld (any/all) (llvmPackages.compiler-rt is what is broken in the stdenv) 08:45:17
@alexfmpe:matrix.orgalexfmpe FWIW pkgsCross.aarch64-android-prebuilt is in much better shape 11:01:13
@rosscomputerguy:matrix.orgTristan RossDoes https://github.com/NixOS/nixpkgs/pull/409265 fix the issue?15:52:28

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