nixpkgs/pkgs/system/stdenvs.nix
Eelco Dolstra 1ab4a9324c * The `patch' command is now part of stdenv, so it no longer needs to
be passed to derivations that need to apply patches.
* GCC 3.4 is now the default compiler (old GCC renamed to `gcc-3.3').
* The temporary GCCs built during the stdenvLinux bootstrap are now
  built without C++ support and without profiling.
* Remove fixincl in GCC 3.4 to prevent a retained dependency on the
  previous GCC.
* Always set $prefix in setup.sh, even when there is no configure
  script.

svn path=/nixpkgs/trunk/; revision=1444
2004-09-18 17:23:18 +00:00

162 lines
5.3 KiB
Nix

# This file defines the various standard build environments.
#
# On Linux systems, the standard build environment consists of
# Nix-built instances glibc and the `standard' Unix tools, i.e., the
# Posix utilities, the GNU C compiler, and so on. On other systems,
# we use the native C library.
{system, allPackages}: rec {
gccWrapper = import ../build-support/gcc-wrapper;
genericStdenv = import ../stdenv/generic;
# Trivial environment used for building other environments.
stdenvInitial = (import ../stdenv/initial) {
name = "stdenv-initial";
inherit system;
};
# The native (i.e., impure) build environment. This one uses the
# tools installed on the system outside of the Nix environment,
# i.e., the stuff in /bin, /usr/bin, etc. This environment should
# be used with care, since many Nix packages will not build properly
# with it (e.g., because they require GNU Make).
stdenvNative = (import ../stdenv/native) {
stdenv = stdenvInitial;
inherit genericStdenv gccWrapper;
};
stdenvNativePkgsFun = bootstrap: allPackages {
stdenv = stdenvNative;
bootCurl = null;
noSysDirs = false;
gccWithCC = !bootstrap;
gccWithProfiling = !bootstrap;
};
stdenvNativePkgs = stdenvNativePkgsFun false;
# The Nix build environment.
stdenvNixFun = bootstrap: (import ../stdenv/nix) {
stdenv = stdenvNative;
pkgs = stdenvNativePkgsFun bootstrap;
inherit genericStdenv gccWrapper;
};
stdenvNix = stdenvNixFun false;
stdenvNixPkgsFun = bootstrap: allPackages {
stdenv = stdenvNixFun bootstrap;
bootCurl = (stdenvNativePkgsFun bootstrap).curl;
noSysDirs = false;
};
stdenvNixPkgs = stdenvNixPkgs false;
# The Linux build environment is a fully bootstrapped Nix
# environment, that is, it should contain no external references.
# 1) Build glibc in the Nix build environment. The result is
# pure.
stdenvLinuxGlibc = (stdenvNixPkgsFun true).glibc;
# 2) Construct a stdenv consisting of the Nix build environment, but
# with a gcc-wrapper that causes linking against the glibc from
# step 1. However, since the gcc wrapper here *does* look in
# native system directories (e.g., `/usr/lib'), it doesn't
# prevent impurity in the things it builds (e.g., through
# `-lncurses').
stdenvLinuxBoot1 = (import ../stdenv/nix-linux) {
stdenv = stdenvNative;
pkgs = stdenvNativePkgsFun true;
glibc = stdenvLinuxGlibc;
inherit genericStdenv gccWrapper;
};
# 3) Now we can build packages that will link against the Nix
# glibc. We are on thin ice here: the compiler used to build
# these packages doesn't prevent impurity, so e.g. bash ends up
# linking against `/lib/libncurses.so', but the glibc from step 1
# *doesn't* search in `/lib' etc. So these programs won't work.
stdenvLinuxBoot1Pkgs = allPackages {
stdenv = stdenvLinuxBoot1;
bootCurl = (stdenvNativePkgsFun true).curl;
noSysDirs = true;
gccWithCC = false;
gccWithProfiling = false;
};
# 4) Therefore we build a new standard environment which is the same
# as the one in step 2, but with a gcc and binutils from step 3
# merged in. Since these are pure (they don't search native
# system directories), things built by this stdenv should be pure.
stdenvLinuxBoot2 = (import ../stdenv/nix-linux) {
stdenv = stdenvLinuxBoot1;
pkgs = (stdenvNativePkgsFun true) // {
inherit (stdenvLinuxBoot1Pkgs) gcc binutils;
};
glibc = stdenvLinuxGlibc;
inherit genericStdenv gccWrapper;
};
# 5) So these packages should be pure.
stdenvLinuxBoot2Pkgs = allPackages {
stdenv = stdenvLinuxBoot2;
bootCurl = (stdenvNativePkgsFun true).curl;
};
# 6) Finally we can construct the Nix build environment from the
# packages from step 5.
stdenvLinux = (import ../stdenv/nix-linux) {
stdenv = stdenvLinuxBoot2;
pkgs = stdenvLinuxBoot2Pkgs;
glibc = stdenvLinuxGlibc;
inherit genericStdenv gccWrapper;
};
# 7) And we can build all packages against that, but we don't
# rebuild stuff from step 6.
stdenvLinuxPkgs =
allPackages {
stdenv = stdenvLinux;
bootCurl = stdenvLinuxBoot2Pkgs.curl;
} //
{inherit (stdenvLinuxBoot2Pkgs)
gzip bzip2 bash binutils coreutils diffutils findutils gawk gcc
gnumake gnused gnutar gnugrep curl;
} //
{glibc = stdenvLinuxGlibc;};
# In summary, we build gcc (and binutils) three times:
# - in stdenvLinuxBoot1 (from stdenvNativePkgs); impure
# - in stdenvLinuxBoot2 (from stdenvLinuxBoot1Pkgs); pure
# - in stdenvLinux (from stdenvLinuxBoot2Pkgs); pure
# The last one may be redundant, but its good for validation (since
# the second one may use impure inputs). To reduce build time, we
# could reduce the number of bootstrap stages inside each gcc build.
# Right now there are 3 stages, so gcc is built 9 times!
# On the other hand, a validating build of glibc is a good idea (it
# probably won't work right now due to --rpath madness).
# Darwin (Mac OS X) standard environment. Very simple for now
# (essentially it's just the native environment).
stdenvDarwin = (import ../stdenv/darwin) {
stdenv = stdenvInitial;
genericStdenv = import ../stdenv/generic;
inherit gccWrapper;
};
stdenvDarwinPkgs = allPackages {
stdenv = stdenvDarwin;
bootCurl = null;
noSysDirs = false;
};
}