442 lines
16 KiB
Nix
442 lines
16 KiB
Nix
# This file constructs the standard build environment for the
|
||
# Linux/i686 platform. It's completely pure; that is, it relies on no
|
||
# external (non-Nix) tools, such as /usr/bin/gcc, and it contains a C
|
||
# compiler and linker that do not search in default locations,
|
||
# ensuring purity of components produced by it.
|
||
{ lib
|
||
, localSystem, crossSystem, config, overlays, crossOverlays ? []
|
||
|
||
, bootstrapFiles ?
|
||
let table = {
|
||
glibc = {
|
||
i686-linux = import ./bootstrap-files/i686.nix;
|
||
x86_64-linux = import ./bootstrap-files/x86_64.nix;
|
||
armv5tel-linux = import ./bootstrap-files/armv5tel.nix;
|
||
armv6l-linux = import ./bootstrap-files/armv6l.nix;
|
||
armv7l-linux = import ./bootstrap-files/armv7l.nix;
|
||
aarch64-linux = import ./bootstrap-files/aarch64.nix;
|
||
mipsel-linux = import ./bootstrap-files/loongson2f.nix;
|
||
riscv64-linux = import ./bootstrap-files/riscv64.nix;
|
||
};
|
||
musl = {
|
||
aarch64-linux = import ./bootstrap-files/aarch64-musl.nix;
|
||
armv6l-linux = import ./bootstrap-files/armv6l-musl.nix;
|
||
x86_64-linux = import ./bootstrap-files/x86_64-musl.nix;
|
||
};
|
||
};
|
||
|
||
# Try to find an architecture compatible with our current system. We
|
||
# just try every bootstrap we’ve got and test to see if it is
|
||
# compatible with or current architecture.
|
||
getCompatibleTools = lib.foldl (v: system:
|
||
if v != null then v
|
||
else if localSystem.isCompatible (lib.systems.elaborate { inherit system; }) then archLookupTable.${system}
|
||
else null) null (lib.attrNames archLookupTable);
|
||
|
||
archLookupTable = table.${localSystem.libc}
|
||
or (abort "unsupported libc for the pure Linux stdenv");
|
||
files = archLookupTable.${localSystem.system} or (if getCompatibleTools != null then getCompatibleTools
|
||
else (abort "unsupported platform for the pure Linux stdenv"));
|
||
in files
|
||
}:
|
||
|
||
assert crossSystem == localSystem;
|
||
|
||
let
|
||
inherit (localSystem) system;
|
||
|
||
commonPreHook =
|
||
''
|
||
export NIX_ENFORCE_PURITY="''${NIX_ENFORCE_PURITY-1}"
|
||
export NIX_ENFORCE_NO_NATIVE="''${NIX_ENFORCE_NO_NATIVE-1}"
|
||
${if system == "x86_64-linux" then "NIX_LIB64_IN_SELF_RPATH=1" else ""}
|
||
${if system == "mipsel-linux" then "NIX_LIB32_IN_SELF_RPATH=1" else ""}
|
||
'';
|
||
|
||
|
||
# The bootstrap process proceeds in several steps.
|
||
|
||
|
||
# Create a standard environment by downloading pre-built binaries of
|
||
# coreutils, GCC, etc.
|
||
|
||
|
||
# Download and unpack the bootstrap tools (coreutils, GCC, Glibc, ...).
|
||
bootstrapTools = import (if localSystem.libc == "musl" then ./bootstrap-tools-musl else ./bootstrap-tools) {
|
||
inherit system bootstrapFiles;
|
||
extraAttrs = lib.optionalAttrs
|
||
(config.contentAddressedByDefault or false)
|
||
{
|
||
__contentAddressed = true;
|
||
outputHashAlgo = "sha256";
|
||
outputHashMode = "recursive";
|
||
};
|
||
};
|
||
|
||
getLibc = stage: stage.${localSystem.libc};
|
||
|
||
|
||
# This function builds the various standard environments used during
|
||
# the bootstrap. In all stages, we build an stdenv and the package
|
||
# set that can be built with that stdenv.
|
||
stageFun = prevStage:
|
||
{ name, overrides ? (self: super: {}), extraNativeBuildInputs ? [] }:
|
||
|
||
let
|
||
|
||
thisStdenv = import ../generic {
|
||
name = "${name}-stdenv-linux";
|
||
buildPlatform = localSystem;
|
||
hostPlatform = localSystem;
|
||
targetPlatform = localSystem;
|
||
inherit config extraNativeBuildInputs;
|
||
preHook =
|
||
''
|
||
# Don't patch #!/interpreter because it leads to retained
|
||
# dependencies on the bootstrapTools in the final stdenv.
|
||
dontPatchShebangs=1
|
||
${commonPreHook}
|
||
'';
|
||
shell = "${bootstrapTools}/bin/bash";
|
||
initialPath = [bootstrapTools];
|
||
|
||
fetchurlBoot = import ../../build-support/fetchurl/boot.nix {
|
||
inherit system;
|
||
};
|
||
|
||
cc = if prevStage.gcc-unwrapped == null
|
||
then null
|
||
else lib.makeOverridable (import ../../build-support/cc-wrapper) {
|
||
name = "${name}-gcc-wrapper";
|
||
nativeTools = false;
|
||
nativeLibc = false;
|
||
buildPackages = lib.optionalAttrs (prevStage ? stdenv) {
|
||
inherit (prevStage) stdenv;
|
||
};
|
||
cc = prevStage.gcc-unwrapped;
|
||
bintools = prevStage.binutils;
|
||
isGNU = true;
|
||
libc = getLibc prevStage;
|
||
inherit lib;
|
||
inherit (prevStage) coreutils gnugrep;
|
||
stdenvNoCC = prevStage.ccWrapperStdenv;
|
||
};
|
||
|
||
overrides = self: super: (overrides self super) // { fetchurl = thisStdenv.fetchurlBoot; };
|
||
};
|
||
|
||
in {
|
||
inherit config overlays;
|
||
stdenv = thisStdenv;
|
||
};
|
||
|
||
in
|
||
|
||
[
|
||
|
||
({}: {
|
||
__raw = true;
|
||
|
||
gcc-unwrapped = null;
|
||
binutils = null;
|
||
coreutils = null;
|
||
gnugrep = null;
|
||
})
|
||
|
||
# Build a dummy stdenv with no GCC or working fetchurl. This is
|
||
# because we need a stdenv to build the GCC wrapper and fetchurl.
|
||
(prevStage: stageFun prevStage {
|
||
name = "bootstrap-stage0";
|
||
|
||
overrides = self: super: {
|
||
# We thread stage0's stdenv through under this name so downstream stages
|
||
# can use it for wrapping gcc too. This way, downstream stages don't need
|
||
# to refer to this stage directly, which violates the principle that each
|
||
# stage should only access the stage that came before it.
|
||
ccWrapperStdenv = self.stdenv;
|
||
# The Glibc include directory cannot have the same prefix as the
|
||
# GCC include directory, since GCC gets confused otherwise (it
|
||
# will search the Glibc headers before the GCC headers). So
|
||
# create a dummy Glibc here, which will be used in the stdenv of
|
||
# stage1.
|
||
${localSystem.libc} = self.stdenv.mkDerivation {
|
||
pname = "bootstrap-stage0-${localSystem.libc}";
|
||
version = "bootstrap";
|
||
buildCommand = ''
|
||
mkdir -p $out
|
||
ln -s ${bootstrapTools}/lib $out/lib
|
||
'' + lib.optionalString (localSystem.libc == "glibc") ''
|
||
ln -s ${bootstrapTools}/include-glibc $out/include
|
||
'' + lib.optionalString (localSystem.libc == "musl") ''
|
||
ln -s ${bootstrapTools}/include-libc $out/include
|
||
'';
|
||
};
|
||
gcc-unwrapped = bootstrapTools;
|
||
binutils = import ../../build-support/bintools-wrapper {
|
||
name = "bootstrap-stage0-binutils-wrapper";
|
||
nativeTools = false;
|
||
nativeLibc = false;
|
||
buildPackages = { };
|
||
libc = getLibc self;
|
||
inherit lib;
|
||
inherit (self) stdenvNoCC coreutils gnugrep;
|
||
bintools = bootstrapTools;
|
||
};
|
||
coreutils = bootstrapTools;
|
||
gnugrep = bootstrapTools;
|
||
};
|
||
})
|
||
|
||
|
||
# Create the first "real" standard environment. This one consists
|
||
# of bootstrap tools only, and a minimal Glibc to keep the GCC
|
||
# configure script happy.
|
||
#
|
||
# For clarity, we only use the previous stage when specifying these
|
||
# stages. So stageN should only ever have references for stage{N-1}.
|
||
#
|
||
# If we ever need to use a package from more than one stage back, we
|
||
# simply re-export those packages in the middle stage(s) using the
|
||
# overrides attribute and the inherit syntax.
|
||
(prevStage: stageFun prevStage {
|
||
name = "bootstrap-stage1";
|
||
|
||
# Rebuild binutils to use from stage2 onwards.
|
||
overrides = self: super: {
|
||
binutils-unwrapped = super.binutils-unwrapped.override {
|
||
enableGold = false;
|
||
};
|
||
inherit (prevStage)
|
||
ccWrapperStdenv
|
||
gcc-unwrapped coreutils gnugrep;
|
||
|
||
${localSystem.libc} = getLibc prevStage;
|
||
|
||
# A threaded perl build needs glibc/libpthread_nonshared.a,
|
||
# which is not included in bootstrapTools, so disable threading.
|
||
# This is not an issue for the final stdenv, because this perl
|
||
# won't be included in the final stdenv and won't be exported to
|
||
# top-level pkgs as an override either.
|
||
perl = super.perl.override { enableThreading = false; };
|
||
};
|
||
})
|
||
|
||
|
||
# 2nd stdenv that contains our own rebuilt binutils and is used for
|
||
# compiling our own Glibc.
|
||
(prevStage: stageFun prevStage {
|
||
name = "bootstrap-stage2";
|
||
|
||
overrides = self: super: {
|
||
inherit (prevStage)
|
||
ccWrapperStdenv
|
||
gcc-unwrapped coreutils gnugrep
|
||
perl gnum4 bison;
|
||
dejagnu = super.dejagnu.overrideAttrs (a: { doCheck = false; } );
|
||
|
||
# We need libidn2 and its dependency libunistring as glibc dependency.
|
||
# To avoid the cycle, we build against bootstrap libc, nuke references,
|
||
# and use the result as input for our final glibc. We also pass this pair
|
||
# through, so the final package-set uses exactly the same builds.
|
||
libunistring = super.libunistring.overrideAttrs (attrs: {
|
||
postFixup = attrs.postFixup or "" + ''
|
||
${self.nukeReferences}/bin/nuke-refs "$out"/lib/lib*.so.*.*
|
||
'';
|
||
# Apparently iconv won't work with bootstrap glibc, but it will be used
|
||
# with glibc built later where we keep *this* build of libunistring,
|
||
# so we need to trick it into supporting libiconv.
|
||
am_cv_func_iconv_works = "yes";
|
||
});
|
||
libidn2 = super.libidn2.overrideAttrs (attrs: {
|
||
postFixup = attrs.postFixup or "" + ''
|
||
${self.nukeReferences}/bin/nuke-refs -e '${lib.getLib self.libunistring}' \
|
||
"$out"/lib/lib*.so.*.*
|
||
'';
|
||
});
|
||
|
||
# This also contains the full, dynamically linked, final Glibc.
|
||
binutils = prevStage.binutils.override {
|
||
# Rewrap the binutils with the new glibc, so both the next
|
||
# stage's wrappers use it.
|
||
libc = getLibc self;
|
||
|
||
# Unfortunately, when building gcc in the next stage, its LTO plugin
|
||
# would use the final libc but `ld` would use the bootstrap one,
|
||
# and that can fail to load. Therefore we upgrade `ld` to use newer libc;
|
||
# apparently the interpreter needs to match libc, too.
|
||
bintools = self.stdenvNoCC.mkDerivation {
|
||
inherit (prevStage.bintools.bintools) name;
|
||
dontUnpack = true;
|
||
dontBuild = true;
|
||
# We wouldn't need to *copy* all, but it's easier and the result is temporary anyway.
|
||
installPhase = ''
|
||
mkdir -p "$out"/bin
|
||
cp -a '${prevStage.bintools.bintools}'/bin/* "$out"/bin/
|
||
chmod +w "$out"/bin/ld.bfd
|
||
patchelf --set-interpreter '${getLibc self}'/lib/ld*.so.? \
|
||
--set-rpath "${getLibc self}/lib:$(patchelf --print-rpath "$out"/bin/ld.bfd)" \
|
||
"$out"/bin/ld.bfd
|
||
'';
|
||
};
|
||
};
|
||
};
|
||
|
||
# `libtool` comes with obsolete config.sub/config.guess that don't recognize Risc-V.
|
||
extraNativeBuildInputs =
|
||
lib.optional (localSystem.isRiscV) prevStage.updateAutotoolsGnuConfigScriptsHook;
|
||
})
|
||
|
||
|
||
# Construct a third stdenv identical to the 2nd, except that this
|
||
# one uses the rebuilt Glibc from stage2. It still uses the recent
|
||
# binutils and rest of the bootstrap tools, including GCC.
|
||
(prevStage: stageFun prevStage {
|
||
name = "bootstrap-stage3";
|
||
|
||
overrides = self: super: rec {
|
||
inherit (prevStage)
|
||
ccWrapperStdenv
|
||
binutils coreutils gnugrep
|
||
perl patchelf linuxHeaders gnum4 bison libidn2 libunistring;
|
||
${localSystem.libc} = getLibc prevStage;
|
||
# Link GCC statically against GMP etc. This makes sense because
|
||
# these builds of the libraries are only used by GCC, so it
|
||
# reduces the size of the stdenv closure.
|
||
gmp = super.gmp.override { stdenv = self.makeStaticLibraries self.stdenv; };
|
||
mpfr = super.mpfr.override { stdenv = self.makeStaticLibraries self.stdenv; };
|
||
libmpc = super.libmpc.override { stdenv = self.makeStaticLibraries self.stdenv; };
|
||
isl_0_20 = super.isl_0_20.override { stdenv = self.makeStaticLibraries self.stdenv; };
|
||
gcc-unwrapped = super.gcc-unwrapped.override {
|
||
isl = isl_0_20;
|
||
# Use a deterministically built compiler
|
||
# see https://github.com/NixOS/nixpkgs/issues/108475 for context
|
||
reproducibleBuild = true;
|
||
profiledCompiler = false;
|
||
};
|
||
};
|
||
extraNativeBuildInputs = [ prevStage.patchelf ] ++
|
||
# Many tarballs come with obsolete config.sub/config.guess that don't recognize aarch64.
|
||
lib.optional (!localSystem.isx86 || localSystem.libc == "musl")
|
||
prevStage.updateAutotoolsGnuConfigScriptsHook;
|
||
})
|
||
|
||
|
||
# Construct a fourth stdenv that uses the new GCC. But coreutils is
|
||
# still from the bootstrap tools.
|
||
(prevStage: stageFun prevStage {
|
||
name = "bootstrap-stage4";
|
||
|
||
overrides = self: super: {
|
||
# Zlib has to be inherited and not rebuilt in this stage,
|
||
# because gcc (since JAR support) already depends on zlib, and
|
||
# then if we already have a zlib we want to use that for the
|
||
# other purposes (binutils and top-level pkgs) too.
|
||
inherit (prevStage) gettext gnum4 bison gmp perl texinfo zlib linuxHeaders libidn2 libunistring;
|
||
${localSystem.libc} = getLibc prevStage;
|
||
binutils = super.binutils.override {
|
||
# Don't use stdenv's shell but our own
|
||
shell = self.bash + "/bin/bash";
|
||
# Build expand-response-params with last stage like below
|
||
buildPackages = {
|
||
inherit (prevStage) stdenv;
|
||
};
|
||
};
|
||
|
||
gcc = lib.makeOverridable (import ../../build-support/cc-wrapper) {
|
||
nativeTools = false;
|
||
nativeLibc = false;
|
||
isGNU = true;
|
||
buildPackages = {
|
||
inherit (prevStage) stdenv;
|
||
};
|
||
cc = prevStage.gcc-unwrapped;
|
||
bintools = self.binutils;
|
||
libc = getLibc self;
|
||
inherit lib;
|
||
inherit (self) stdenvNoCC coreutils gnugrep;
|
||
shell = self.bash + "/bin/bash";
|
||
};
|
||
};
|
||
extraNativeBuildInputs = [ prevStage.patchelf prevStage.xz ] ++
|
||
# Many tarballs come with obsolete config.sub/config.guess that don't recognize aarch64.
|
||
lib.optional (!localSystem.isx86 || localSystem.libc == "musl")
|
||
prevStage.updateAutotoolsGnuConfigScriptsHook;
|
||
})
|
||
|
||
# Construct the final stdenv. It uses the Glibc and GCC, and adds
|
||
# in a new binutils that doesn't depend on bootstrap-tools, as well
|
||
# as dynamically linked versions of all other tools.
|
||
#
|
||
# When updating stdenvLinux, make sure that the result has no
|
||
# dependency (`nix-store -qR') on bootstrapTools or the first
|
||
# binutils built.
|
||
(prevStage: {
|
||
inherit config overlays;
|
||
stdenv = import ../generic rec {
|
||
name = "stdenv-linux";
|
||
|
||
buildPlatform = localSystem;
|
||
hostPlatform = localSystem;
|
||
targetPlatform = localSystem;
|
||
inherit config;
|
||
|
||
preHook = commonPreHook;
|
||
|
||
initialPath =
|
||
((import ../common-path.nix) {pkgs = prevStage;});
|
||
|
||
extraNativeBuildInputs = [ prevStage.patchelf ] ++
|
||
# Many tarballs come with obsolete config.sub/config.guess that don't recognize aarch64.
|
||
lib.optional (!localSystem.isx86 || localSystem.libc == "musl")
|
||
prevStage.updateAutotoolsGnuConfigScriptsHook;
|
||
|
||
cc = prevStage.gcc;
|
||
|
||
shell = cc.shell;
|
||
|
||
inherit (prevStage.stdenv) fetchurlBoot;
|
||
|
||
extraAttrs = {
|
||
# TODO: remove this!
|
||
inherit (prevStage) glibc;
|
||
|
||
inherit bootstrapTools;
|
||
shellPackage = prevStage.bash;
|
||
};
|
||
|
||
# Mainly avoid reference to bootstrap tools
|
||
allowedRequisites = with prevStage; with lib;
|
||
# Simple executable tools
|
||
concatMap (p: [ (getBin p) (getLib p) ]) [
|
||
gzip bzip2 xz bash binutils.bintools coreutils diffutils findutils
|
||
gawk gnumake gnused gnutar gnugrep gnupatch patchelf ed
|
||
]
|
||
# Library dependencies
|
||
++ map getLib (
|
||
[ attr acl zlib pcre libidn2 libunistring ]
|
||
++ lib.optional (gawk.libsigsegv != null) gawk.libsigsegv
|
||
)
|
||
# More complicated cases
|
||
++ (map (x: getOutput x (getLibc prevStage)) [ "out" "dev" "bin" ] )
|
||
++ [ /*propagated from .dev*/ linuxHeaders
|
||
binutils gcc gcc.cc gcc.cc.lib gcc.expand-response-params
|
||
]
|
||
++ lib.optionals (!localSystem.isx86 || localSystem.libc == "musl")
|
||
[ prevStage.updateAutotoolsGnuConfigScriptsHook prevStage.gnu-config ];
|
||
|
||
overrides = self: super: {
|
||
inherit (prevStage)
|
||
gzip bzip2 xz bash coreutils diffutils findutils gawk
|
||
gnumake gnused gnutar gnugrep gnupatch patchelf
|
||
attr acl zlib pcre libunistring libidn2;
|
||
${localSystem.libc} = getLibc prevStage;
|
||
} // lib.optionalAttrs (super.stdenv.targetPlatform == localSystem) {
|
||
# Need to get rid of these when cross-compiling.
|
||
inherit (prevStage) binutils binutils-unwrapped;
|
||
gcc = cc;
|
||
};
|
||
};
|
||
})
|
||
|
||
]
|