I was trying to cross compile SDL. Many dependencies work, but I ended seeing
libX11 not ready for cross compilation. Other xorg libraries cross-compile
well. libX11 may need a small patch. The problem is the usual "configure test
cannot be run in cross compilation", so the configure script halts.
I made the pkgconfig expression always return buildDrv, as I think it rarely
will be needed as buildInput. So to avoid rewriting all its mentions to use
it as buildNativeInput, I prefered this small change.
svn path=/nixpkgs/branches/stdenv-updates/; revision=18500
- Stating better the guile dependencies (native/host) for guile to build
- Fixing cross-linking, through --rpath-link (ld(1) explains well about it
- Made gcc call the linker and the assembler through the gcc wrapper instead of
directly. I thought this was the source of missing -rpath's, but the source
of the problem ended up being the lack of --rpath-link. But I think the
native gcc calls the wrapped ld and as, so let's do the same cross
compiling.
- Removed the binutilsCross from the glibc expressions. Now they are built
using the gcc-cross-wrapper, and they were built with the direct gcc and
binutils before this change.
- I think patchelf and strip don't break the cross-compiled binaries, so I
reallow them on cross compilation.
- I disable the checkPhase on cross compilation. This made gmp and libtool
fail when cross compiled, iirc.
svn path=/nixpkgs/branches/stdenv-updates/; revision=18498
linking path), and with this achieved bash being cross-compilable.
I fixed the few expressions involved in bash building, so they have well stated
native and non-native inputs.
I also tried to cross-build guile, and with this I found a problem in the
actual cross-gcc: it calls the binutils ld, instead of the ld wrapper. This
way, the programs/shared_libraries don't get the proper -rpath.
svn path=/nixpkgs/branches/stdenv-updates/; revision=18497
arguments for the ncurses expression.
We should find a way to express a dependency in cross compilation of the style
"cross-ncurses depends on having the native-ncurses".
svn path=/nixpkgs/branches/stdenv-updates/; revision=18479
derivation, the "buildInputs" in every stdenv mkDerivation don't map now
directly to the environment
variable "buildInputs" in the builder, but "buildNativeInputs". So, the inputs
build by the native compiler.
When cross compiling, they will map to the environment variable "buildInputs"
(yes, now the same name), which means does to be built with the cross compiler.
I think I improved the naming of variables a bit. There was a big mess,
specially in the stdenv adapter for cross building, and also in the default
builder script.
I also tried to add proper manager of propagatedInputBuilds, these being
propagated considering the host or build origin of that input build (so, at the
end, being those propagatedInputBuilds being propagated properly to the native
or the cross compiler.
svn path=/nixpkgs/branches/stdenv-updates/; revision=18477
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
`selectVersion ./foo "bar"' instead of `import ./foo/bar.nix'.
* Replaced `with args' with formal function arguments in several
packages.
* Renamed several files to `default.nix'. As a general rule, version
numbers should only be included in the filename when there is a
reason to keep multiple versions of a package in Nixpkgs.
Otherwise, it just makes it harder to update the package.
svn path=/nixpkgs/trunk/; revision=18403
needing to keep a new tree of expressions apart for the expressions to get
cross-compiled.
I changed the whole way of using cross compilation with nixpkgs, which before
was done through a simple adapter.
Now the adapter became complex, and I've tried to avoid the most obvious
recursivities. For example, the fetchurl expression should
never be cross-compiled, as the gmp, mpfr, and some others, like
some ncurses, perl, ... I made overrided copies of those necessary as
perlNoCross, ncursesNoCross, as stdenvNoCross, keeping in mind that
the stdenv (capable of cross compilation) is built upon stdenvNoCross using
an adapter.
So, to cross compile, instead of building using "nixpkgs/default.nix",
you should build with your
own "myarchiteture.nix", which should have contents like these, for example:
import /etc/nixos/nixpkgs/default.nix
{
crossSystem = {
config = "armv5tel-unknown-linux-gnueabi";
bigEndian = false;
arch = "arm";
float = "soft";
};
}
svn path=/nixpkgs/branches/stdenv-updates/; revision=18398
It still does not work, but I think I already get glibc cross compiled.
Next: gcc and g++, and set some setup script hooks on stdenvCross.
It took quite enough hours for this commit.
svn path=/nixpkgs/branches/stdenv-updates/; revision=18351
My idea is to provide special stdenv expressions that will contain in the path
additional cross compilers. As most expressions for programs accept a stdenv parameter,
we could substitute this parameter with the special stdenv, which will have a
generic builder that attempts the usual "--target=..." and can additionally
have an env variable like "cross" with the target architecture set.
So, finally we could have additional expressions like this:
bashRealArm = makeOverridable (import ../shells/bash) {
inherit fetchurl bison;
stdenv = stdenvCross "armv5tel-unknown-linux-gnueabi";
};
Meanwhile it does not work - I still cannot get the cross-gcc to build.
I think it does not fill the previous expressions with a lot of noise, so I
think it may be a good path to follow.
I only touched some files of the current stdenv: gcc-4.3, kernel headers
2.6.28, glibc 2.9, ...
I tried to use the gcc-cross-wrapper, that may be very outdated. Maybe I will
update it, or update the gcc-wrapper expression to make it fit the cross tools,
but meanwhile I even cannot build gcc, so I have not tested the wrapper.
This new idea on cross compiling is not similar to that of the
nixpkgs/branches/cross-compilation, which mostly added bare new expressions for
anything to be cross compiled, if I understood it correctly.
I cared not to break anything of the usual stdenv in all this work.
svn path=/nixpkgs/branches/stdenv-updates/; revision=18343
