b7650aaa77
See the new docs for details. The difference is vis-a-vis older versions of this PR, not master.
60 lines
2.1 KiB
Nix
60 lines
2.1 KiB
Nix
{ lib, rust, rustPlatform, fetchFromGitHub }:
|
|
|
|
let
|
|
mkBlogOsTest = target: rustPlatform.buildRustPackage rec {
|
|
name = "blog_os-sysroot-test";
|
|
|
|
src = fetchFromGitHub {
|
|
owner = "phil-opp";
|
|
repo = "blog_os";
|
|
rev = "4e38e7ddf8dd021c3cd7e4609dfa01afb827797b";
|
|
sha256 = "0k9ipm9ddm1bad7bs7368wzzp6xwrhyfzfpckdax54l4ffqwljcg";
|
|
};
|
|
|
|
cargoSha256 = "1cbcplgz28yxshyrp2krp1jphbrcqdw6wxx3rry91p7hiqyibd30";
|
|
|
|
inherit target;
|
|
|
|
RUSTFLAGS = "-C link-arg=-nostartfiles";
|
|
|
|
# Tests don't work for `no_std`. See https://os.phil-opp.com/testing/
|
|
doCheck = false;
|
|
|
|
meta = with lib; {
|
|
description = "Test for using custom sysroots with buildRustPackage";
|
|
maintainers = with maintainers; [ aaronjanse ];
|
|
platforms = lib.platforms.x86_64;
|
|
};
|
|
};
|
|
|
|
# The book uses rust-lld for linking, but rust-lld is not currently packaged for NixOS.
|
|
# The justification in the book for using rust-lld suggests that gcc can still be used for testing:
|
|
# > Instead of using the platform's default linker (which might not support Linux targets),
|
|
# > we use the cross platform LLD linker that is shipped with Rust for linking our kernel.
|
|
# https://github.com/phil-opp/blog_os/blame/7212ffaa8383122b1eb07fe1854814f99d2e1af4/blog/content/second-edition/posts/02-minimal-rust-kernel/index.md#L157
|
|
targetContents = {
|
|
"llvm-target" = "x86_64-unknown-none";
|
|
"data-layout" = "e-m:e-i64:64-f80:128-n8:16:32:64-S128";
|
|
"arch" = "x86_64";
|
|
"target-endian" = "little";
|
|
"target-pointer-width" = "64";
|
|
"target-c-int-width" = "32";
|
|
"os" = "none";
|
|
"executables" = true;
|
|
"linker-flavor" = "gcc";
|
|
"panic-strategy" = "abort";
|
|
"disable-redzone" = true;
|
|
"features" = "-mmx,-sse,+soft-float";
|
|
};
|
|
|
|
in {
|
|
blogOS-targetByFile = mkBlogOsTest (builtins.toFile "x86_64-blog_os.json" (builtins.toJSON targetContents));
|
|
blogOS-targetByNix = let
|
|
plat = lib.systems.elaborate { config = "x86_64-none"; } // {
|
|
rustc = {
|
|
config = "x86_64-blog_os";
|
|
platform = targetContents;
|
|
};
|
|
};
|
|
in mkBlogOsTest (rust.toRustTargetSpec plat);
|
|
}
|