You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
nixpkgs/pkgs/stdenv/linux/default.nix

306 lines
10 KiB

# 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
, bootstrapFiles ? { # switch
"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;
"mips64el-linux" = import ./bootstrap-files/loongson2f.nix;
}.${localSystem.system}
or (abort "unsupported platform for the pure Linux stdenv")
}:
assert crossSystem == null;
let
inherit (localSystem) system platform;
commonPreHook =
''
export NIX_ENFORCE_PURITY="''${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 == "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 = import ./bootstrap-tools { inherit system bootstrapFiles; };
# 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: {}), extraBuildInputs ? [] }:
let
8 years ago
thisStdenv = import ../generic {
inherit system config extraBuildInputs;
8 years ago
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/bash";
initialPath = [bootstrapTools];
fetchurlBoot = import ../../build-support/fetchurl/boot.nix {
inherit system;
8 years ago
};
cc = if isNull prevStage.gcc-unwrapped
then null
else lib.makeOverridable (import ../../build-support/cc-wrapper) {
nativeTools = false;
nativeLibc = false;
cc = prevStage.gcc-unwrapped;
isGNU = true;
libc = prevStage.glibc;
inherit (prevStage) binutils coreutils gnugrep;
name = name;
stdenv = prevStage.ccWrapperStdenv;
};
extraAttrs = {
# Having the proper 'platform' in all the stdenvs allows getting proper
# linuxHeaders for example.
inherit platform;
# stdenv.glibc is used by GCC build to figure out the system-level
# /usr/include directory.
inherit (prevStage) glibc;
};
overrides = self: super: (overrides self super) // { fetchurl = thisStdenv.fetchurlBoot; };
};
in {
buildPlatform = localSystem;
hostPlatform = localSystem;
targetPlatform = localSystem;
inherit config overlays;
stdenv = thisStdenv;
};
in
[
({}: {
__raw = true;
gcc-unwrapped = null;
glibc = 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 = null;
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.
glibc = self.stdenv.mkDerivation {
name = "bootstrap-glibc";
buildCommand = ''
mkdir -p $out
ln -s ${bootstrapTools}/lib $out/lib
ln -s ${bootstrapTools}/include-glibc $out/include
'';
};
gcc-unwrapped = bootstrapTools;
binutils = 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-gcc-wrapper";
# Rebuild binutils to use from stage2 onwards.
overrides = self: super: {
binutils = super.binutils.override { gold = false; };
inherit (prevStage)
ccWrapperStdenv
glibc gcc-unwrapped coreutils gnugrep;
# 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-gcc-wrapper";
overrides = self: super: {
inherit (prevStage)
ccWrapperStdenv
binutils gcc-unwrapped coreutils gnugrep
perl paxctl gnum4 bison;
# 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.
(prevStage: stageFun prevStage {
name = "bootstrap-gcc-wrapper";
overrides = self: super: rec {
inherit (prevStage)
ccWrapperStdenv
binutils glibc coreutils gnugrep
perl patchelf linuxHeaders gnum4 bison;
# 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_14 = super.isl_0_14.override { stdenv = self.makeStaticLibraries self.stdenv; };
gcc-unwrapped = super.gcc-unwrapped.override {
7 years ago
isl = isl_0_14;
};
};
extraBuildInputs = [ prevStage.patchelf prevStage.paxctl ];
})
# Construct a fourth stdenv that uses the new GCC. But coreutils is
# still from the bootstrap tools.
(prevStage: stageFun prevStage {
name = "";
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 glibc zlib linuxHeaders;
gcc = lib.makeOverridable (import ../../build-support/cc-wrapper) {
nativeTools = false;
nativeLibc = false;
isGNU = true;
cc = prevStage.gcc-unwrapped;
libc = self.glibc;
inherit (self) stdenv binutils coreutils gnugrep;
name = "";
shell = self.bash + "/bin/bash";
};
};
extraBuildInputs = [ prevStage.patchelf prevStage.xz ];
})
# 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: {
buildPlatform = localSystem;
hostPlatform = localSystem;
targetPlatform = localSystem;
inherit config overlays;
stdenv = 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 = prevStage;});
extraBuildInputs = [ prevStage.patchelf prevStage.paxctl ];
cc = prevStage.gcc;
shell = cc.shell;
inherit (prevStage.stdenv) fetchurlBoot;
extraAttrs = {
inherit (prevStage) glibc;
inherit platform bootstrapTools;
shellPackage = prevStage.bash;
};
/* outputs TODO
allowedRequisites = with prevStage;
[ gzip bzip2 xz bash binutils coreutils diffutils findutils gawk
glibc gnumake gnused gnutar gnugrep gnupatch patchelf attr acl
paxctl zlib pcre linuxHeaders ed gcc gcc.cc libsigsegv
];
*/
overrides = self: super: {
gcc = cc;
inherit (prevStage)
gzip bzip2 xz bash binutils coreutils diffutils findutils gawk
glibc gnumake gnused gnutar gnugrep gnupatch patchelf
attr acl paxctl zlib pcre;
};
};
})
]