forked from mirrors/nixpkgs
7ade207f6b
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
112 lines
3.7 KiB
Nix
112 lines
3.7 KiB
Nix
{ system, name, preHook ? null, postHook ? null, initialPath, gcc, shell
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, param1 ? "", param2 ? "", param3 ? "", param4 ? "", param5 ? ""
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, extraAttrs ? {}
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, # The `fetchurl' to use for downloading curl and its dependencies
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# (see all-packages.nix).
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fetchurlBoot
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}:
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let
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lib = import ../../lib;
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stdenvGenerator = setupScript: rec {
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# The stdenv that we are producing.
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result =
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derivation {
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inherit system name;
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builder = shell;
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args = ["-e" ./builder.sh];
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setup = setupScript;
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inherit preHook postHook initialPath gcc shell;
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# TODO: make this more elegant.
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inherit param1 param2 param3 param4 param5;
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propagatedUserEnvPkgs = [gcc] ++
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lib.filter lib.isDerivation initialPath;
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}
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// {
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meta = {
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description = "The default build environment for Unix packages in Nixpkgs";
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};
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# Add a utility function to produce derivations that use this
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# stdenv and its shell.
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mkDerivation = attrs:
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(derivation (
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(removeAttrs attrs ["meta" "passthru"])
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// (let
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buildInputs = if attrs ? buildInputs then attrs.buildInputs
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else [];
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buildNativeInputs = if attrs ? buildNativeInputs then attrs.buildNativeInputs
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else [];
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in
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{
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builder = if attrs ? realBuilder then attrs.realBuilder else shell;
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args = if attrs ? args then attrs.args else
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["-e" (if attrs ? builder then attrs.builder else ./default-builder.sh)];
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stdenv = result;
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system = result.system;
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buildInputs = buildInputs ++ buildNativeInputs;
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}))
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)
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# The meta attribute is passed in the resulting attribute set,
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# but it's not part of the actual derivation, i.e., it's not
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# passed to the builder and is not a dependency. But since we
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# include it in the result, it *is* available to nix-env for
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# queries.
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//
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{ meta = if attrs ? meta then attrs.meta else {}; }
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# Pass through extra attributes that are not inputs, but
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# should be made available to Nix expressions using the
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# derivation (e.g., in assertions).
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//
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(if attrs ? passthru then attrs.passthru else {});
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# Utility flags to test the type of platform.
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isDarwin = result.system == "i686-darwin" || result.system == "powerpc-darwin";
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isLinux = result.system == "i686-linux"
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|| result.system == "x86_64-linux"
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|| result.system == "powerpc-linux"
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|| result.system == "armv5tel-linux";
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isi686 = result.system == "i686-linux"
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|| result.system == "i686-darwin"
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|| result.system == "i686-freebsd"
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|| result.system == "i686-openbsd"
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|| result.system == "i386-sunos";
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is64bit = result.system == "x86_64-linux";
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# Utility function: allow stdenv to be easily regenerated with
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# a different setup script. (See all-packages.nix for an
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# example.)
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regenerate = stdenvGenerator;
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# For convenience, bring in the library functions in lib/ so
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# packages don't have to do that themselves.
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inherit lib;
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inherit fetchurlBoot;
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}
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# Propagate any extra attributes. For instance, we use this to
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# "lift" packages like curl from the final stdenv for Linux to
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# all-packages.nix for that platform (meaning that it has a line
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# like curl = if stdenv ? curl then stdenv.curl else ...).
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// extraAttrs;
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}.result;
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in stdenvGenerator ./setup.sh
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