Unverified Commit e427a1d3 authored by Tristan Ross's avatar Tristan Ross Committed by GitHub
Browse files

llvmPackages.libc: init at 20.0.0-unstable-2024-12-08 (#363449)

parents 91df0dc2 41b14024

lib/systems/default.nix

+1 −0
Original line number Diff line number Diff line
@@ -102,6 +102,7 @@ let 
        else if final.isMusl                  then "musl"

        else if final.isUClibc                then "uclibc"

        else if final.isAndroid               then "bionic"

        else if final.isLLVMLibc              then "llvm"

        else if final.isLinux  /* default */  then "glibc"

        else if final.isFreeBSD               then "fblibc"

        else if final.isOpenBSD               then "oblibc"

lib/systems/inspect.nix

+1 −0
Original line number Diff line number Diff line
@@ -113,6 +113,7 @@ rec { 
    isGnu          = with abis; map (a: { abi = a; }) [ gnuabi64 gnuabin32 gnu gnueabi gnueabihf gnuabielfv1 gnuabielfv2 ];

    isMusl         = with abis; map (a: { abi = a; }) [ musl musleabi musleabihf muslabin32 muslabi64 ];

    isUClibc       = with abis; map (a: { abi = a; }) [ uclibc uclibceabi uclibceabihf ];

    isLLVMLibc     = [ { abi = abis.llvm; } ];



    isEfi = [

      { cpu = { family = "arm"; version = "6"; }; }

lib/systems/parse.nix

+3 −0
Original line number Diff line number Diff line
@@ -416,6 +416,9 @@ rec { 
    uclibceabihf = { float = "hard"; };

    uclibc       = {};



    # LLVM libc

    llvm         = {};



    unknown = {};

  };

pkgs/development/compilers/llvm/common/default.nix

+127 −114
Original line number Diff line number Diff line
@@ -1075,6 +1075,7 @@ let 
          relative = "compiler-rt";

        });

    in

    (

      {

        compiler-rt-libc = callPackage ./compiler-rt (

          let
@@ -1204,6 +1205,18 @@ let 
                );

        };

      }

      // lib.optionalAttrs (lib.versionAtLeast metadata.release_version "20") {

        libc-overlay = callPackage ./libc {

          isFullBuild = false;

        };



        libc-full = callPackage ./libc {

          isFullBuild = true;

        };



        libc = if stdenv.targetPlatform.libc == "llvm" then libraries.libc-full else libraries.libc-overlay;

      }

    )

  );



  noExtend = extensible: lib.attrsets.removeAttrs extensible [ "extend" ];

pkgs/development/compilers/llvm/common/libc/default.nix

0 → 100644
+95 −0
Original line number Diff line number Diff line 
{

  lib,

  stdenv,

  llvm_meta,

  src ? null,

  monorepoSrc ? null,

  version,

  release_version,

  runCommand,

  python3,

  python3Packages,

  patches ? [ ],

  cmake,

  ninja,

  isFullBuild ? true,

  linuxHeaders,

}:

let

  pname = "libc";



  src' = runCommand "${pname}-src-${version}" { } (''

    mkdir -p "$out"

    cp -r ${monorepoSrc}/cmake "$out"

    cp -r ${monorepoSrc}/runtimes "$out"

    cp -r ${monorepoSrc}/llvm "$out"

    cp -r ${monorepoSrc}/${pname} "$out"

  '');



  stdenv' =

    if stdenv.cc.isClang then

      stdenv.override {

        cc = stdenv.cc.override {

          nixSupport = stdenv.cc.nixSupport // {

            cc-cflags = lib.remove "-lunwind" stdenv.cc.nixSupport.cc-cflags;

          };

        };

      }

    else

      stdenv;

in

stdenv'.mkDerivation (finalAttrs: {

  inherit pname version patches;



  src = src';



  sourceRoot = "${finalAttrs.src.name}/runtimes";



  nativeBuildInputs =

    [

      cmake

      python3

    ]

    ++ (lib.optional (lib.versionAtLeast release_version "15") ninja)

    ++ (lib.optional isFullBuild python3Packages.pyyaml);



  buildInputs = lib.optional isFullBuild linuxHeaders;



  outputs = [ "out" ] ++ (lib.optional isFullBuild "dev");



  postUnpack = lib.optionalString isFullBuild ''

    patchShebangs $sourceRoot/../$pname/hdrgen/yaml_to_classes.py

    chmod +x $sourceRoot/../$pname/hdrgen/yaml_to_classes.py

  '';



  prePatch = ''

    cd ../${finalAttrs.pname}

    chmod -R u+w ../

  '';



  postPatch = ''

    cd ../runtimes

  '';



  postInstall = lib.optionalString (!isFullBuild) ''

    substituteAll ${./libc-shim.so} $out/lib/libc.so

  '';



  libc = if (!isFullBuild) then stdenv.cc.libc else null;



  cmakeFlags = [

    (lib.cmakeBool "LLVM_LIBC_FULL_BUILD" isFullBuild)

    (lib.cmakeFeature "LLVM_ENABLE_RUNTIMES" "libc")

  ];



  # For the update script:

  passthru = {

    monorepoSrc = monorepoSrc;

    inherit isFullBuild;

  };



  meta = llvm_meta // {

    homepage = "https://libc.llvm.org/";

    description = "Standard C library for LLVM";

  };

})