df65a79bb3
Now that we have a way to alter /bin/sh in chroots on non-NixOS Linux platforms, it may be useful to have access to stdenv.shell package and to static bash contained in bootstrap tools. So make them accessible via stdenv attribute set.
302 lines
9.2 KiB
Nix
302 lines
9.2 KiB
Nix
# This file constructs the standard build environment for the
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# Linux/i686 platform. It's completely pure; that is, it relies on no
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# external (non-Nix) tools, such as /usr/bin/gcc, and it contains a C
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# compiler and linker that do not search in default locations,
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# ensuring purity of components produced by it.
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# The function defaults are for easy testing.
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{ system ? builtins.currentSystem
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, allPackages ? import ../../top-level/all-packages.nix
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, platform ? null, config }:
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rec {
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bootstrapFiles =
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if system == "i686-linux" then import ./bootstrap/i686
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else if system == "x86_64-linux" then import ./bootstrap/x86_64
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else if system == "powerpc-linux" then import ./bootstrap/powerpc
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else if system == "armv5tel-linux" then import ./bootstrap/armv5tel
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else if system == "armv7l-linux" then import ./bootstrap/armv5tel
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else if system == "mips64el-linux" then import ./bootstrap/loongson2f
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else abort "unsupported platform for the pure Linux stdenv";
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commonPreHook =
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''
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export NIX_ENFORCE_PURITY=1
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havePatchELF=1
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${if system == "x86_64-linux" then "NIX_LIB64_IN_SELF_RPATH=1" else ""}
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${if system == "mips64el-linux" then "NIX_LIB32_IN_SELF_RPATH=1" else ""}
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'';
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# The bootstrap process proceeds in several steps.
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# 1) Create a standard environment by downloading pre-built binaries
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# of coreutils, GCC, etc.
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# This function downloads a file.
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download = {url, sha256}: derivation {
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name = baseNameOf (toString url);
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builder = bootstrapFiles.sh;
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inherit system url;
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inherit (bootstrapFiles) bzip2 mkdir curl cpio ln;
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args = [ ./scripts/download.sh ];
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outputHashAlgo = "sha256";
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outputHash = sha256;
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impureEnvVars = [ "http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy" ];
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};
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# Download and unpack the bootstrap tools (coreutils, GCC, Glibc, ...).
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bootstrapTools = derivation {
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name = "bootstrap-tools";
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builder = bootstrapFiles.sh;
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args =
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if system == "armv5tel-linux"
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then [ ./scripts/unpack-bootstrap-tools-arm.sh ]
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else [ ./scripts/unpack-bootstrap-tools.sh ];
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inherit (bootstrapFiles) bzip2 mkdir curl cpio;
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tarball = download {
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inherit (bootstrapFiles.bootstrapTools) url sha256;
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};
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inherit system;
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# Needed by the GCC wrapper.
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langC = true;
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langCC = true;
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};
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# This function builds the various standard environments used during
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# the bootstrap.
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stdenvBootFun =
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{gcc, extraAttrs ? {}, overrides ? (pkgs: {}), extraPath ? [], fetchurl}:
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import ../generic {
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inherit system config;
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name = "stdenv-linux-boot";
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preHook =
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''
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# Don't patch #!/interpreter because it leads to retained
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# dependencies on the bootstrapTools in the final stdenv.
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dontPatchShebangs=1
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${commonPreHook}
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'';
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shell = "${bootstrapTools}/bin/sh";
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initialPath = [bootstrapTools] ++ extraPath;
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fetchurlBoot = fetchurl;
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inherit gcc;
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# Having the proper 'platform' in all the stdenvs allows getting proper
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# linuxHeaders for example.
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extraAttrs = extraAttrs // { inherit platform; };
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overrides = pkgs: (overrides pkgs) // {
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inherit fetchurl;
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};
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};
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# Build a dummy stdenv with no GCC or working fetchurl. This is
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# because we need a stdenv to build the GCC wrapper and fetchurl.
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stdenvLinuxBoot0 = stdenvBootFun {
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gcc = "/no-such-path";
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fetchurl = null;
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};
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fetchurl = import ../../build-support/fetchurl {
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stdenv = stdenvLinuxBoot0;
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curl = bootstrapTools;
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};
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# The Glibc include directory cannot have the same prefix as the GCC
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# include directory, since GCC gets confused otherwise (it will
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# search the Glibc headers before the GCC headers). So create a
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# dummy Glibc.
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bootstrapGlibc = stdenvLinuxBoot0.mkDerivation {
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name = "bootstrap-glibc";
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buildCommand = ''
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mkdir -p $out
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ln -s ${bootstrapTools}/lib $out/lib
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ln -s ${bootstrapTools}/include-glibc $out/include
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'';
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};
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# A helper function to call gcc-wrapper.
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wrapGCC =
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{gcc ? bootstrapTools, libc, binutils, coreutils, shell ? "", name ? "bootstrap-gcc-wrapper"}:
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import ../../build-support/gcc-wrapper {
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nativeTools = false;
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nativeLibc = false;
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inherit gcc binutils coreutils libc shell name;
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stdenv = stdenvLinuxBoot0;
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};
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# Create the first "real" standard environment. This one consists
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# of bootstrap tools only, and a minimal Glibc to keep the GCC
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# configure script happy.
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stdenvLinuxBoot1 = stdenvBootFun {
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gcc = wrapGCC {
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libc = bootstrapGlibc;
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binutils = bootstrapTools;
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coreutils = bootstrapTools;
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};
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inherit fetchurl;
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};
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# 2) These are the packages that we can build with the first
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# stdenv. We only need binutils, because recent Glibcs
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# require recent Binutils, and those in bootstrap-tools may
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# be too old.
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stdenvLinuxBoot1Pkgs = allPackages {
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inherit system platform;
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bootStdenv = stdenvLinuxBoot1;
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};
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# 3) 2nd stdenv that we will use to build only the glibc.
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stdenvLinuxBoot2 = stdenvBootFun {
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gcc = wrapGCC {
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libc = bootstrapGlibc;
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binutils = stdenvLinuxBoot1Pkgs.binutils;
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coreutils = bootstrapTools;
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};
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overrides = pkgs: {
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inherit (stdenvLinuxBoot1Pkgs) perl;
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};
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inherit fetchurl;
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};
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# 4) These are the packages that we can build with the 2nd
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# stdenv. We only need Glibc (in step 5).
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stdenvLinuxBoot2Pkgs = allPackages {
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inherit system platform;
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bootStdenv = stdenvLinuxBoot2;
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};
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# 5) Build Glibc with the bootstrap tools. The result is the full,
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# dynamically linked, final Glibc.
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stdenvLinuxGlibc = stdenvLinuxBoot2Pkgs.glibc;
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# 6) Construct a third stdenv identical to the 2nd, except that
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# this one uses the Glibc built in step 3. It still uses
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# the recent binutils and rest of the bootstrap tools, including GCC.
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stdenvLinuxBoot3 = stdenvBootFun {
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gcc = wrapGCC {
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binutils = stdenvLinuxBoot1Pkgs.binutils;
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coreutils = bootstrapTools;
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libc = stdenvLinuxGlibc;
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};
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overrides = pkgs: {
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glibc = stdenvLinuxGlibc;
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inherit (stdenvLinuxBoot1Pkgs) perl;
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# Link GCC statically against GMP etc. This makes sense because
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# these builds of the libraries are only used by GCC, so it
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# reduces the size of the stdenv closure.
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gmp = pkgs.gmp.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
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mpfr = pkgs.mpfr.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
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mpc = pkgs.mpc.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
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isl = pkgs.isl.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
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cloog = pkgs.cloog.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
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ppl = pkgs.ppl.override { stdenv = pkgs.makeStaticLibraries pkgs.stdenv; };
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};
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inherit fetchurl;
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};
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# 7) The packages that can be built using the third stdenv.
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stdenvLinuxBoot3Pkgs = allPackages {
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inherit system platform;
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bootStdenv = stdenvLinuxBoot3;
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};
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# 8) Construct a fourth stdenv identical to the second, except that
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# this one uses the dynamically linked GCC and Binutils from step
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# 5. The other tools (e.g. coreutils) are still from the
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# bootstrap tools.
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stdenvLinuxBoot4 = stdenvBootFun {
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gcc = wrapGCC rec {
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inherit (stdenvLinuxBoot3Pkgs) binutils;
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coreutils = bootstrapTools;
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libc = stdenvLinuxGlibc;
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gcc = stdenvLinuxBoot3Pkgs.gcc.gcc;
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name = "";
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};
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extraPath = [ stdenvLinuxBoot3Pkgs.xz ];
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overrides = pkgs: {
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inherit (stdenvLinuxBoot1Pkgs) perl;
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inherit (stdenvLinuxBoot3Pkgs) gettext gnum4 xz gmp;
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};
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inherit fetchurl;
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};
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# 9) The packages that can be built using the fourth stdenv.
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stdenvLinuxBoot4Pkgs = allPackages {
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inherit system platform;
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bootStdenv = stdenvLinuxBoot4;
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};
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# 10) Construct the final stdenv. It uses the Glibc, GCC and
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# Binutils built above, and adds in dynamically linked versions
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# of all other tools.
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#
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# When updating stdenvLinux, make sure that the result has no
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# dependency (`nix-store -qR') on bootstrapTools or the
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# first binutils built.
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stdenvLinux = import ../generic rec {
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inherit system config;
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preHook = commonPreHook;
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initialPath =
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((import ../common-path.nix) {pkgs = stdenvLinuxBoot4Pkgs;})
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++ [stdenvLinuxBoot4Pkgs.patchelf];
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gcc = wrapGCC rec {
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inherit (stdenvLinuxBoot3Pkgs) binutils;
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inherit (stdenvLinuxBoot4Pkgs) coreutils;
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libc = stdenvLinuxGlibc;
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gcc = stdenvLinuxBoot3Pkgs.gcc.gcc;
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shell = stdenvLinuxBoot4Pkgs.bash + "/bin/bash";
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name = "";
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};
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shell = stdenvLinuxBoot4Pkgs.bash + "/bin/bash";
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fetchurlBoot = fetchurl;
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extraAttrs = {
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inherit (stdenvLinuxBoot3Pkgs) glibc;
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inherit platform bootstrapTools;
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shellPackage = stdenvLinuxBoot4Pkgs.bash;
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};
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overrides = pkgs: {
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inherit gcc;
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inherit (stdenvLinuxBoot3Pkgs) binutils glibc;
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inherit (stdenvLinuxBoot4Pkgs)
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gzip bzip2 xz bash coreutils diffutils findutils gawk
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gnumake gnused gnutar gnugrep gnupatch patchelf
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attr acl;
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};
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};
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}
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