nixpkgs/pkgs/stdenv/native/default.nix
Matthew Bauer a3a6ad7a01 stdenv: implement crossOverlays
crossOverlays only apply to the packages being built, not the build
packages. It is useful when you don’t care what is used to build your
packages, just what is being built. The idea relies heavily on the
cross compiling infrastructure. Using this implies that we need to
create a cross stdenv.
2018-12-04 21:06:46 -06:00

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{ lib
, localSystem, crossSystem, config, overlays
}:
assert crossSystem == localSystem;
let
inherit (localSystem) system;
shell =
if system == "i686-freebsd" || system == "x86_64-freebsd" then "/usr/local/bin/bash"
else "/bin/bash";
path =
(if system == "i686-solaris" then [ "/usr/gnu" ] else []) ++
(if system == "i686-netbsd" then [ "/usr/pkg" ] else []) ++
(if system == "x86_64-solaris" then [ "/opt/local/gnu" ] else []) ++
["/" "/usr" "/usr/local"];
prehookBase = ''
# Disable purity tests; it's allowed (even needed) to link to
# libraries outside the Nix store (like the C library).
export NIX_ENFORCE_PURITY=
export NIX_ENFORCE_NO_NATIVE="''${NIX_ENFORCE_NO_NATIVE-1}"
'';
prehookFreeBSD = ''
${prehookBase}
alias make=gmake
alias tar=gtar
alias sed=gsed
export MAKE=gmake
shopt -s expand_aliases
'';
prehookOpenBSD = ''
${prehookBase}
alias make=gmake
alias grep=ggrep
alias mv=gmv
alias ln=gln
alias sed=gsed
alias tar=gtar
export MAKE=gmake
shopt -s expand_aliases
'';
prehookNetBSD = ''
${prehookBase}
alias make=gmake
alias sed=gsed
alias tar=gtar
export MAKE=gmake
shopt -s expand_aliases
'';
# prevent libtool from failing to find dynamic libraries
prehookCygwin = ''
${prehookBase}
shopt -s expand_aliases
export lt_cv_deplibs_check_method=pass_all
'';
extraNativeBuildInputsCygwin = [
../cygwin/all-buildinputs-as-runtimedep.sh
../cygwin/wrap-exes-to-find-dlls.sh
] ++ (if system == "i686-cygwin" then [
../cygwin/rebase-i686.sh
] else if system == "x86_64-cygwin" then [
../cygwin/rebase-x86_64.sh
] else []);
# A function that builds a "native" stdenv (one that uses tools in
# /usr etc.).
makeStdenv =
{ cc, fetchurl, extraPath ? [], overrides ? (self: super: { }) }:
import ../generic {
buildPlatform = localSystem;
hostPlatform = localSystem;
targetPlatform = localSystem;
preHook =
if system == "i686-freebsd" then prehookFreeBSD else
if system == "x86_64-freebsd" then prehookFreeBSD else
if system == "i686-openbsd" then prehookOpenBSD else
if system == "i686-netbsd" then prehookNetBSD else
if system == "i686-cygwin" then prehookCygwin else
if system == "x86_64-cygwin" then prehookCygwin else
prehookBase;
extraNativeBuildInputs =
if system == "i686-cygwin" then extraNativeBuildInputsCygwin else
if system == "x86_64-cygwin" then extraNativeBuildInputsCygwin else
[];
initialPath = extraPath ++ path;
fetchurlBoot = fetchurl;
inherit shell cc overrides config;
};
in
[
({}: rec {
__raw = true;
stdenv = makeStdenv {
cc = null;
fetchurl = null;
};
stdenvNoCC = stdenv;
cc = let
nativePrefix = { # switch
"i686-solaris" = "/usr/gnu";
"x86_64-solaris" = "/opt/local/gcc47";
}.${system} or "/usr";
in
import ../../build-support/cc-wrapper {
name = "cc-native";
nativeTools = true;
nativeLibc = true;
inherit nativePrefix;
bintools = import ../../build-support/bintools-wrapper {
name = "bintools";
inherit stdenvNoCC nativePrefix;
nativeTools = true;
nativeLibc = true;
};
inherit stdenvNoCC;
};
fetchurl = import ../../build-support/fetchurl {
inherit lib stdenvNoCC;
# Curl should be in /usr/bin or so.
curl = null;
};
})
# First build a stdenv based only on tools outside the store.
(prevStage: {
inherit config overlays;
stdenv = makeStdenv {
inherit (prevStage) cc fetchurl;
} // { inherit (prevStage) fetchurl; };
})
# Using that, build a stdenv that adds the xz command (which most systems
# don't have, so we mustn't rely on the native environment providing it).
(prevStage: {
inherit config overlays;
stdenv = makeStdenv {
inherit (prevStage.stdenv) cc fetchurl;
extraPath = [ prevStage.xz ];
overrides = self: super: { inherit (prevStage) xz; };
};
})
]