nixpkgs/pkgs/stdenv/linux/default.nix
2014-08-24 18:08:23 +02:00

282 lines
8.9 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.
# The function defaults are for easy testing.
{ system ? builtins.currentSystem
, allPackages ? import ../../top-level/all-packages.nix
, platform ? null, config ? {} }:
rec {
lib = import ../../../lib;
bootstrapFiles =
if system == "i686-linux" then import ./bootstrap/i686.nix
else if system == "x86_64-linux" then import ./bootstrap/x86_64.nix
else if system == "armv5tel-linux" then import ./bootstrap/armv5tel.nix
else if system == "armv6l-linux" then import ./bootstrap/armv6l.nix
else if system == "armv7l-linux" then import ./bootstrap/armv6l.nix
else if system == "mips64el-linux" then import ./bootstrap/loongson2f.nix
else abort "unsupported platform for the pure Linux stdenv";
commonPreHook =
''
export NIX_ENFORCE_PURITY=1
havePatchELF=1
${if system == "x86_64-linux" then "NIX_LIB64_IN_SELF_RPATH=1" else ""}
${if system == "mips64el-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 = derivation {
name = "bootstrap-tools";
builder = bootstrapFiles.sh;
args =
if system == "armv5tel-linux" || system == "armv6l-linux"
|| system == "armv7l-linux"
then [ ./scripts/unpack-bootstrap-tools-arm.sh ]
else [ ./scripts/unpack-bootstrap-tools.sh ];
# FIXME: get rid of curl.
inherit (bootstrapFiles) bzip2 mkdir curl cpio;
tarball = import <nix/fetchurl.nix> {
inherit (bootstrapFiles.bootstrapTools) url sha256;
};
inherit system;
# Needed by the GCC wrapper.
langC = true;
langCC = true;
};
# A helper function to call gcc-wrapper.
wrapGCC =
{ gcc, libc, binutils, coreutils, name }:
lib.makeOverridable (import ../../build-support/gcc-wrapper) {
nativeTools = false;
nativeLibc = false;
inherit gcc binutils coreutils libc name;
stdenv = stage0.stdenv;
};
# 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 =
{gcc, extraAttrs ? {}, overrides ? (pkgs: {}), extraPath ? []}:
let
thisStdenv = import ../generic {
inherit system config;
name = "stdenv-linux-boot";
preHook =
''
# Don't patch #!/interpreter because it leads to retained
# dependencies on the bootstrapTools in the final stdenv.
dontPatchShebangs=1
${commonPreHook}
'';
shell = "${bootstrapTools}/bin/sh";
initialPath = [bootstrapTools] ++ extraPath;
fetchurlBoot = import ../../build-support/fetchurl {
stdenv = stage0.stdenv;
curl = bootstrapTools;
};
inherit gcc;
# Having the proper 'platform' in all the stdenvs allows getting proper
# linuxHeaders for example.
extraAttrs = extraAttrs // { inherit platform; };
overrides = pkgs: (overrides pkgs) // { fetchurl = thisStdenv.fetchurlBoot; };
};
thisPkgs = allPackages {
inherit system platform;
bootStdenv = thisStdenv;
};
in { stdenv = thisStdenv; pkgs = thisPkgs; };
# Build a dummy stdenv with no GCC or working fetchurl. This is
# because we need a stdenv to build the GCC wrapper and fetchurl.
stage0 = stageFun {
gcc = "/no-such-path";
overrides = pkgs: {
# 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.
glibc = stage0.stdenv.mkDerivation {
name = "bootstrap-glibc";
buildCommand = ''
mkdir -p $out
ln -s ${bootstrapTools}/lib $out/lib
ln -s ${bootstrapTools}/include-glibc $out/include
'';
};
};
};
# 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.
stage1 = stageFun {
gcc = wrapGCC {
gcc = bootstrapTools;
libc = stage0.pkgs.glibc;
binutils = bootstrapTools;
coreutils = bootstrapTools;
name = "bootstrap-gcc-wrapper";
};
# Rebuild binutils to use from stage2 onwards.
overrides = pkgs: {
binutils = pkgs.binutils.override { gold = false; };
inherit (stage0.pkgs) glibc;
};
};
# 2nd stdenv that contains our own rebuilt binutils and is used for
# compiling our own Glibc.
stage2 = stageFun {
gcc = wrapGCC {
gcc = bootstrapTools;
libc = stage1.pkgs.glibc;
binutils = stage1.pkgs.binutils;
coreutils = bootstrapTools;
name = "bootstrap-gcc-wrapper";
};
overrides = pkgs: {
inherit (stage1.pkgs) perl binutils paxctl;
# This also contains the full, dynamically linked, final Glibc.
};
};
# 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.
stage3 = stageFun {
gcc = wrapGCC {
gcc = bootstrapTools;
libc = stage2.pkgs.glibc;
binutils = stage2.pkgs.binutils;
coreutils = bootstrapTools;
name = "bootstrap-gcc-wrapper";
};
overrides = pkgs: {
inherit (stage2.pkgs) binutils glibc perl;
# 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 = pkgs.gmp.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
mpfr = pkgs.mpfr.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
mpc = pkgs.mpc.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
isl = pkgs.isl.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
cloog = pkgs.cloog.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
ppl = pkgs.ppl.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
};
extraAttrs = {
glibc = stage2.pkgs.glibc; # Required by gcc47 build
};
extraPath = [ stage2.pkgs.paxctl ];
};
# Construct a fourth stdenv that uses the new GCC. But coreutils is
# still from the bootstrap tools.
stage4 = stageFun {
gcc = wrapGCC {
gcc = stage3.pkgs.gcc.gcc;
libc = stage3.pkgs.glibc;
binutils = stage3.pkgs.binutils;
coreutils = bootstrapTools;
name = "";
};
extraPath = [ stage3.pkgs.xz ];
overrides = pkgs: {
inherit (stage3.pkgs) gettext gnum4 gmp perl glibc;
};
};
# 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.
stdenvLinux = import ../generic rec {
inherit system config;
preHook =
''
# Make "strip" produce deterministic output, by setting
# timestamps etc. to a fixed value.
commonStripFlags="--enable-deterministic-archives"
${commonPreHook}
'';
initialPath =
((import ../common-path.nix) {pkgs = stage4.pkgs;})
++ [stage4.pkgs.patchelf stage4.pkgs.paxctl ];
shell = stage4.pkgs.bash + "/bin/bash";
gcc = (wrapGCC rec {
gcc = stage4.stdenv.gcc.gcc;
libc = stage4.pkgs.glibc;
inherit (stage4.pkgs) binutils coreutils;
name = "";
}).override { inherit shell; };
fetchurlBoot = stage4.stdenv.fetchurl;
extraAttrs = {
inherit (stage4.pkgs) glibc;
inherit platform bootstrapTools;
shellPackage = stage4.pkgs.bash;
};
overrides = pkgs: {
inherit gcc;
inherit (stage4.pkgs)
gzip bzip2 xz bash binutils coreutils diffutils findutils gawk
glibc gnumake gnused gnutar gnugrep gnupatch patchelf
attr acl paxctl;
};
};
}