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linux stdenv: Utilize overrides and prevStage better

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`gcc-unwrapped` basically replaces `gccPlain`. It may seem like an ugly
polution to stick it in all-packages, but a future PR will enshrine this
`*-unwrapped` pattern. In any event, the long term goal is stdenvs might
need to tweak how compilers are booted and wrapped, but the code to build
the unwrapped compilers themselves should be generic.
This commit is contained in:
John Ericson 2016-12-24 07:07:20 -08:00
parent 67ebd3161b
commit 6a45e911c4
2 changed files with 32 additions and 37 deletions
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68
pkgs/stdenv/linux/default.nix
View File

@ -43,8 +43,8 @@ rec {
# 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 =
{gccPlain, glibc, binutils, coreutils, gnugrep, name, overrides ? (self: super: {}), extraBuildInputs ? []}:
stageFun = prevStage:
{ name, overrides ? (self: super: {}), extraBuildInputs ? [] }:
let
@ -65,15 +65,15 @@ rec {
inherit system;
};
cc = if isNull gccPlain
cc = if isNull prevStage.gcc-unwrapped
then null
else lib.makeOverridable (import ../../build-support/cc-wrapper) {
nativeTools = false;
nativeLibc = false;
cc = gccPlain;
cc = prevStage.gcc-unwrapped;
isGNU = true;
libc = glibc;
inherit binutils coreutils gnugrep;
libc = prevStage.glibc;
inherit (prevStage) binutils coreutils gnugrep;
name = name;
stdenv = stage0.stdenv;
};
@ -85,7 +85,7 @@ rec {
# stdenv.glibc is used by GCC build to figure out the system-level
# /usr/include directory.
inherit glibc;
inherit (prevStage) glibc;
};
overrides = self: super: (overrides self super) // { fetchurl = thisStdenv.fetchurlBoot; };
};
@ -95,14 +95,17 @@ rec {
stdenv = thisStdenv;
};
# 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 {
gccPlain = null;
baseCase = {
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.
stage0 = stageFun baseCase {
name = null;
overrides = self: super: {
@ -119,6 +122,10 @@ rec {
ln -s ${bootstrapTools}/include-glibc $out/include
'';
};
gcc-unwrapped = bootstrapTools;
binutils = bootstrapTools;
coreutils = bootstrapTools;
gnugrep = bootstrapTools;
};
};
@ -133,18 +140,13 @@ rec {
# 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 = prevStage: stageFun {
gccPlain = bootstrapTools;
inherit (prevStage) glibc;
binutils = bootstrapTools;
coreutils = bootstrapTools;
gnugrep = bootstrapTools;
stage1 = 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) glibc;
inherit (prevStage) glibc gcc-unwrapped coreutils gnugrep;
# A threaded perl build needs glibc/libpthread_nonshared.a,
# which is not included in bootstrapTools, so disable threading.
@ -158,16 +160,13 @@ rec {
# 2nd stdenv that contains our own rebuilt binutils and is used for
# compiling our own Glibc.
stage2 = prevStage: stageFun {
gccPlain = bootstrapTools;
inherit (prevStage) glibc;
binutils = prevStage.binutils;
coreutils = bootstrapTools;
gnugrep = bootstrapTools;
stage2 = prevStage: stageFun prevStage {
name = "bootstrap-gcc-wrapper";
overrides = self: super: {
inherit (prevStage) perl binutils paxctl gnum4 bison;
inherit (prevStage)
binutils gcc-unwrapped coreutils gnugrep
perl paxctl gnum4 bison;
# This also contains the full, dynamically linked, final Glibc.
};
};
@ -176,15 +175,13 @@ rec {
# 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 = prevStage: stageFun {
gccPlain = bootstrapTools;
inherit (prevStage) glibc binutils;
coreutils = bootstrapTools;
gnugrep = bootstrapTools;
stage3 = prevStage: stageFun prevStage {
name = "bootstrap-gcc-wrapper";
overrides = self: super: rec {
inherit (prevStage) binutils glibc perl patchelf linuxHeaders gnum4 bison;
inherit (prevStage)
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.
@ -192,7 +189,7 @@ rec {
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; };
gccPlain = super.gcc.cc.override {
gcc-unwrapped = super.gcc-unwrapped.override {
isl = isl_0_14;
};
};
@ -202,10 +199,7 @@ rec {
# Construct a fourth stdenv that uses the new GCC. But coreutils is
# still from the bootstrap tools.
stage4 = prevStage: stageFun {
inherit (prevStage) gccPlain glibc binutils;
gnugrep = bootstrapTools;
coreutils = bootstrapTools;
stage4 = prevStage: stageFun prevStage {
name = "";
overrides = self: super: {
@ -219,7 +213,7 @@ rec {
nativeTools = false;
nativeLibc = false;
isGNU = true;
cc = self.stdenv.cc.cc;
cc = prevStage.gcc-unwrapped;
libc = self.glibc;
inherit (self) stdenv binutils coreutils gnugrep;
name = "";

1
pkgs/top-level/all-packages.nix
View File

@ -4721,6 +4721,7 @@ in
gambit = callPackage ../development/compilers/gambit { };
gcc = gcc5;
gcc-unwrapped = gcc.cc;
wrapCCMulti = cc:
if system == "x86_64-linux" then lowPrio (