42 lines
1.6 KiB
Nix
42 lines
1.6 KiB
Nix
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{ rustPlatform, fetchFromGitHub, writeText }:
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rustPlatform.buildRustPackage rec {
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name = "blog_os-sysroot-test";
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src = fetchFromGitHub {
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owner = "phil-opp";
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repo = "blog_os";
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rev = "4e38e7ddf8dd021c3cd7e4609dfa01afb827797b";
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sha256 = "0k9ipm9ddm1bad7bs7368wzzp6xwrhyfzfpckdax54l4ffqwljcg";
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};
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cargoSha256 = "1cbcplgz28yxshyrp2krp1jphbrcqdw6wxx3rry91p7hiqyibd30";
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# The book uses rust-lld for linking, but rust-lld is not currently packaged for NixOS.
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# The justification in the book for using rust-lld suggests that gcc can still be used for testing:
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# > Instead of using the platform's default linker (which might not support Linux targets),
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# > we use the cross platform LLD linker that is shipped with Rust for linking our kernel.
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# https://github.com/phil-opp/blog_os/blame/7212ffaa8383122b1eb07fe1854814f99d2e1af4/blog/content/second-edition/posts/02-minimal-rust-kernel/index.md#L157
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target = writeText "x86_64-blog_os.json" ''
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{
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"llvm-target": "x86_64-unknown-none",
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"data-layout": "e-m:e-i64:64-f80:128-n8:16:32:64-S128",
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"arch": "x86_64",
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"target-endian": "little",
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"target-pointer-width": "64",
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"target-c-int-width": "32",
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"os": "none",
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"executables": true,
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"linker-flavor": "gcc",
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"panic-strategy": "abort",
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"disable-redzone": true,
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"features": "-mmx,-sse,+soft-float"
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}
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'';
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RUSTFLAGS = "-C link-arg=-nostartfiles";
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# Tests don't work for `no_std`. See https://os.phil-opp.com/testing/
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doCheck = false;
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}
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