nixpkgs/pkgs/stdenv/linux/default.nix
Lluís Batlle i Rossell 7ade207f6b - Removed all *NoCross expressions I dupilcated in nixpkgs, while maintaining
the cross compilation functionality.
- I renamed some expected stdenv.mkDerivation parameter attributes so we can
  keep this branch properly updated from trunk. We agreed with Nicolas Pierron
  doing a massive renaming, so all current buildInputs become hostInputs (input
  as build for the host machine, in autotools terminology) , and
  then buildInputs would mean "input as for the build machine".
  By now, the specific "input as for the build machine" is specified through
  buildNativeInputs. We should fix this in the merge to trunk.
- I made the generic stdenv understand the buildNativeInputs, otherwise if
  we start changing nixpkgs expressions so they distinguish the current
  buildInputs into buildInputs and buildNativeInputs, we could break even more
  nixpkgs for other platforms.
- I changed the default result of mkDerivation so it becomes the derivation for
  to be run in the build machine. This allows, without any special rewriting,
  "fetchurl" derivations to be always results for the build machine to use
  them.
- The change above implies that, for anyone wanting to cross-compile, has to
  build the hostDrv of the wanted derivation. For example, after this commit,
  the usual test of "nix-build -A bison.hostDrv arm.nix" works. I described
  the contents of this arm.nix in r18398.


svn path=/nixpkgs/branches/stdenv-updates/; revision=18471
2009-11-19 19:03:34 +00:00

239 lines
7.1 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 ? "i686-linux", allPackages ? import ../../top-level/all-packages.nix}:
rec {
bootstrapFiles =
if system == "i686-linux" then import ./bootstrap/i686
else if system == "x86_64-linux" then import ./bootstrap/x86_64
else if system == "powerpc-linux" then import ./bootstrap/powerpc
else if system == "armv5tel-linux" then import ./bootstrap/armv5tel
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 ""}
'';
# The bootstrap process proceeds in several steps.
# 1) Create a standard environment by downloading pre-built binaries
# of coreutils, GCC, etc.
# This function downloads a file.
download = {url, sha256}: derivation {
name = baseNameOf (toString url);
builder = bootstrapFiles.sh;
inherit system url;
inherit (bootstrapFiles) bzip2 mkdir curl cpio ln;
args = [ ./scripts/download.sh ];
outputHashAlgo = "sha256";
outputHash = sha256;
impureEnvVars = [ "http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy" ];
};
# Download and unpack the bootstrap tools (coreutils, GCC, Glibc, ...).
bootstrapTools = derivation {
name = "bootstrap-tools";
builder = bootstrapFiles.sh;
args = if (system == "armv5tel-linux") then
([ ./scripts/unpack-bootstrap-tools-arm.sh ])
else
([ ./scripts/unpack-bootstrap-tools.sh ]);
inherit (bootstrapFiles) bzip2 mkdir curl cpio;
tarball = download {
inherit (bootstrapFiles.bootstrapTools) url sha256;
};
inherit system;
# Needed by the GCC wrapper.
langC = true;
langCC = true;
};
# This function builds the various standard environments used during
# the bootstrap.
stdenvBootFun =
{gcc, extraAttrs ? {}, extraPath ? [], fetchurl}:
import ../generic {
inherit system;
name = "stdenv-linux-boot";
param1 = bootstrapTools;
preHook = builtins.toFile "prehook.sh"
''
# 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 = fetchurl;
inherit gcc;
extraAttrs = extraAttrs // {inherit fetchurl;};
};
# Build a dummy stdenv with no GCC or working fetchurl. This is
# because we need a stdenv to build the GCC wrapper and fetchurl.
stdenvLinuxBoot0 = stdenvBootFun {
gcc = "/no-such-path";
fetchurl = null;
};
fetchurl = import ../../build-support/fetchurl {
stdenv = stdenvLinuxBoot0;
curl = bootstrapTools;
};
# 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.
bootstrapGlibc = stdenvLinuxBoot0.mkDerivation {
name = "bootstrap-glibc";
buildCommand = ''
ensureDir $out
ln -s ${bootstrapTools}/lib $out/lib
ln -s ${bootstrapTools}/include-glibc $out/include
'';
};
# A helper function to call gcc-wrapper.
wrapGCC =
{gcc ? bootstrapTools, libc, binutils, coreutils, shell ? "", name ? "bootstrap-gcc-wrapper"}:
import ../../build-support/gcc-wrapper {
nativeTools = false;
nativeLibc = false;
inherit gcc binutils coreutils libc shell name;
stdenv = stdenvLinuxBoot0;
};
# Create the first "real" standard environment. This one consists
# of bootstrap tools only, and a minimal Glibc to keep the GCC
# configure script happy.
stdenvLinuxBoot1 = stdenvBootFun {
gcc = wrapGCC {libc = bootstrapGlibc; binutils = bootstrapTools;
coreutils = bootstrapTools; };
inherit fetchurl;
};
# 2) These are the packages that we can build with the first
# stdenv. We only need Glibc (in step 3).
stdenvLinuxBoot1Pkgs = allPackages {
inherit system;
bootStdenv = stdenvLinuxBoot1;
};
# 3) Build Glibc with the bootstrap tools. The result is the full,
# dynamically linked, final Glibc.
stdenvLinuxGlibc = stdenvLinuxBoot1Pkgs.glibc;
# 4) Construct a second stdenv identical to the first, except that
# this one uses the Glibc built in step 3. It still uses
# the rest of the bootstrap tools, including GCC.
stdenvLinuxBoot2 = removeAttrs (stdenvBootFun {
gcc = wrapGCC {binutils = bootstrapTools; coreutils = bootstrapTools;
libc = stdenvLinuxGlibc;};
extraAttrs = {glibc = stdenvLinuxGlibc;};
inherit fetchurl;
}) ["gcc" "binutils"];
# 5) The packages that can be built using the second stdenv.
stdenvLinuxBoot2Pkgs = allPackages {
inherit system;
bootStdenv = stdenvLinuxBoot2;
};
# 6) Construct a third stdenv identical to the second, except that
# this one uses the dynamically linked GCC and Binutils from step
# 5. The other tools (e.g. coreutils) are still from the
# bootstrap tools.
stdenvLinuxBoot3 = stdenvBootFun {
gcc = wrapGCC rec {
inherit (stdenvLinuxBoot2Pkgs) binutils;
coreutils = bootstrapTools;
libc = stdenvLinuxGlibc;
gcc = stdenvLinuxBoot2Pkgs.gcc.gcc;
name = "";
};
inherit fetchurl;
};
# 7) The packages that can be built using the third stdenv.
stdenvLinuxBoot3Pkgs = allPackages {
inherit system;
bootStdenv = stdenvLinuxBoot3;
};
# 8) Construct the final stdenv. It uses the Glibc, GCC and
# Binutils built above, and adds in dynamically linked versions
# of all other tools.
#
# When updating stdenvLinux, make sure that the result has no
# dependency (`nix-store -qR') on bootstrapTools.
stdenvLinux = import ../generic {
name = "stdenv-linux";
inherit system;
preHook = builtins.toFile "prehook.sh" commonPreHook;
initialPath =
((import ../common-path.nix) {pkgs = stdenvLinuxBoot3Pkgs;})
++ [stdenvLinuxBoot3Pkgs.patchelf];
gcc = wrapGCC rec {
inherit (stdenvLinuxBoot2Pkgs) binutils;
inherit (stdenvLinuxBoot3Pkgs) coreutils;
libc = stdenvLinuxGlibc;
gcc = stdenvLinuxBoot2Pkgs.gcc.gcc;
shell = stdenvLinuxBoot3Pkgs.bash + "/bin/bash";
name = "";
};
shell = stdenvLinuxBoot3Pkgs.bash + "/bin/bash";
fetchurlBoot = fetchurl;
extraAttrs = {
inherit (stdenvLinuxBoot2Pkgs) binutils /* gcc */ glibc;
inherit (stdenvLinuxBoot3Pkgs)
gzip bzip2 bash coreutils diffutils findutils gawk
gnumake gnused gnutar gnugrep patch patchelf
attr acl;
};
};
}