libcap fails to cross-compile from gnu64 to aarch64-multiplatform on unstable #169010
Description
Describe the bug
When attempting to build an aarch64 sdcard image with the below configuration, libcap fails to build with the following error:
error: builder for '/nix/store/wi4g5zqg5y1m29z0g9ryg6jkmb9nsl98-libcap-aarch64-unknown-linux-gnu-2.63.drv' failed with exit code 2;
last 10 log lines:
> make libcap.so
> make[2]: Entering directory '/build/libcap-2.63/libcap'
> aarch64-unknown-linux-gnu-gcc -O2 -Wall -Wwrite-strings -Wpointer-arith -Wcast-qual -Wcast-align -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Winline -Wshadow -Wunreachable-code -fPIC -Dlinux -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I/build/libcap-2.63/libcap/../libcap/include/uapi -I/build/libcap-2.63/libcap/../libcap/include empty.c -o empty
> objcopy --dump-section .interp=loader.txt empty /dev/null
> objcopy: Unable to recognise the format of the input file `empty'
> make[2]: *** [Makefile:112: loader.txt] Error 1
> make[2]: Leaving directory '/build/libcap-2.63/libcap'
> make[1]: *** [Makefile:41: all] Error 2
> make[1]: Leaving directory '/build/libcap-2.63/libcap'
> make: *** [Makefile:12: all] Error 2
For full logs, run 'nix log /nix/store/wi4g5zqg5y1m29z0g9ryg6jkmb9nsl98-libcap-aarch64-unknown-linux-gnu-2.63.drv'.Steps To Reproduce
Steps to reproduce the behavior:
- Create flake.nix.
{
description = "Base aarch64 system";
inputs = {
nixpkgs.url = "nixpkgs/nixos-unstable";
};
outputs = { self, nixpkgs }: rec {
nixosConfigurations.system = nixpkgs.lib.nixosSystem {
system = "aarch64-linux";
modules = [
"${nixpkgs}/nixos/modules/installer/sd-card/sd-image-aarch64.nix"
{
nixpkgs = {
config.allowUnfree = true;
crossSystem = nixpkgs.lib.systems.examples.aarch64-multiplatform;
localSystem = nixpkgs.lib.systems.examples.gnu64;
};
}
];
};
images.sdcard = nixosConfigurations.system.config.system.build.sdImage;
};
}- Run
nix build '.#images.sdcard' - Build eventually fails with the above error.
Expected behavior
Working build.
Screenshots
N/A
Additional context
I'm not 100% confident that I'm doing this cross compilation correctly. I've been working on this problem all evening and the above flake code is more or less the sum of my knowledge on the subject so far.
Notify maintainers
Nobody was in meta.maintainers, so I added some folks from git blame. I apologize if I @'d anyone who is not relevant. I would tag someone experienced with cross compilation but I'm not sure how to find one of the owners of such a feature.
@Ericson2314
@siraben
@orivej
@zowoq
Metadata
Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.
- system: `"x86_64-linux"`
- host os: `Linux 5.15.32, NixOS, 22.05 (Quokka), 22.05.20220406.b6966d9`
- multi-user?: `yes`
- sandbox: `yes`
- version: `nix-env (Nix) 2.7.0`
- channels(root): `"nixos"`
- channels(eliza): `""`
- nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`