92c77733ac
mrustc is mostly patched to use shared LLVM sources but still uses in-tree source for compiler-rt from LLVM 7. This needs to be patched to compile under glibc 2.31 or later. It's easy enough to reapply all our compiler-rt patches here.
154 lines
3.7 KiB
Nix
154 lines
3.7 KiB
Nix
{ lib, stdenv
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, fetchurl
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, mrustc
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, mrustc-minicargo
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, rust
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, llvm_7
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, llvmPackages_7
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, libffi
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, cmake
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, python3
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, zlib
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, libxml2
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, openssl
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, pkg-config
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, curl
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, which
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, time
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}:
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let
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rustcVersion = "1.29.0";
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rustcSrc = fetchurl {
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url = "https://static.rust-lang.org/dist/rustc-${rustcVersion}-src.tar.gz";
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sha256 = "1sb15znckj8pc8q3g7cq03pijnida6cg64yqmgiayxkzskzk9sx4";
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};
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rustcDir = "rustc-${rustcVersion}-src";
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in
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stdenv.mkDerivation rec {
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pname = "mrustc-bootstrap";
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version = "${mrustc.version}_${rustcVersion}";
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inherit (mrustc) src;
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postUnpack = "tar -xf ${rustcSrc} -C source/";
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# the rust build system complains that nix alters the checksums
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dontFixLibtool = true;
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patches = [
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./patches/0001-use-shared-llvm.patch
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./patches/0002-dont-build-llvm.patch
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./patches/0003-echo-newlines.patch
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./patches/0004-increase-parallelism.patch
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];
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postPatch = ''
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echo "applying patch ./rustc-${rustcVersion}-src.patch"
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patch -p0 -d ${rustcDir}/ < rustc-${rustcVersion}-src.patch
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for p in ${lib.concatStringsSep " " llvmPackages_7.compiler-rt.patches}; do
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echo "applying patch $p"
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patch -p1 -d ${rustcDir}/src/libcompiler_builtins/compiler-rt < $p
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done
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'';
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# rustc unfortunately needs cmake to compile llvm-rt but doesn't
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# use it for the normal build. This disables cmake in Nix.
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dontUseCmakeConfigure = true;
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strictDeps = true;
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nativeBuildInputs = [
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cmake
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mrustc
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mrustc-minicargo
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pkg-config
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python3
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time
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which
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];
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buildInputs = [
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# for rustc
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llvm_7 libffi zlib libxml2
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# for cargo
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openssl curl
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];
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makeFlags = [
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# Use shared mrustc/minicargo/llvm instead of rebuilding them
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"MRUSTC=${mrustc}/bin/mrustc"
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"MINICARGO=${mrustc-minicargo}/bin/minicargo"
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"LLVM_CONFIG=${llvm_7}/bin/llvm-config"
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"RUSTC_TARGET=${rust.toRustTarget stdenv.targetPlatform}"
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];
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buildPhase = ''
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runHook preBuild
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local flagsArray=(
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PARLEVEL=$NIX_BUILD_CORES
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${toString makeFlags}
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)
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echo minicargo.mk: libs
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make -f minicargo.mk "''${flagsArray[@]}" LIBS
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echo minicargo.mk: deps
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mkdir -p output/cargo-build
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# minicargo has concurrency issues when running these; let's build them
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# without parallelism
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for crate in regex regex-0.2.11 curl-sys
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do
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echo "building $crate"
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minicargo ${rustcDir}/src/vendor/$crate \
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--vendor-dir ${rustcDir}/src/vendor \
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--output-dir output/cargo-build -L output/
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done
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echo minicargo.mk: rustc
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make -f minicargo.mk "''${flagsArray[@]}" output/rustc
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echo minicargo.mk: cargo
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make -f minicargo.mk "''${flagsArray[@]}" output/cargo
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echo run_rustc
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make -C run_rustc "''${flagsArray[@]}"
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unset flagsArray
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runHook postBuild
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'';
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doCheck = true;
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checkPhase = ''
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runHook preCheck
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run_rustc/output/prefix/bin/hello_world | grep "hello, world"
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runHook postCheck
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'';
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installPhase = ''
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runHook preInstall
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mkdir -p $out/bin/ $out/lib/
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cp run_rustc/output/prefix/bin/cargo $out/bin/cargo
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cp run_rustc/output/prefix/bin/rustc_binary $out/bin/rustc
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cp -r run_rustc/output/prefix/lib/* $out/lib/
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cp $out/lib/rustlib/${rust.toRustTarget stdenv.targetPlatform}/lib/*.so $out/lib/
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runHook postInstall
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'';
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meta = with lib; {
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inherit (src.meta) homepage;
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description = "A minimal build of Rust";
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longDescription = ''
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A minimal build of Rust, built from source using mrustc.
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This is useful for bootstrapping the main Rust compiler without
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an initial binary toolchain download.
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'';
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maintainers = with maintainers; [ progval r-burns ];
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license = with licenses; [ mit asl20 ];
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platforms = [ "x86_64-linux" ];
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};
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}
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