2aba922d30
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I tried to use the gcc-cross-wrapper, that may be very outdated.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
53 lines
1.3 KiB
Nix
53 lines
1.3 KiB
Nix
{stdenv, fetchurl, perl, cross ? null}:
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assert stdenv.isLinux;
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let version = "2.6.28.5"; in
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stdenv.mkDerivation {
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name = "linux-headers-${version}";
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src = fetchurl {
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url = "mirror://kernel/linux/kernel/v2.6/linux-${version}.tar.bz2";
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sha256 = "0hifjh75sinifr5138v22zwbpqln6lhn65k8b57a1dyzlqca7cl9";
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};
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platform =
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if cross == "armv5tel-unknown-linux-gnueabi" then "arm" else
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if stdenv.system == "i686-linux" then "i386" else
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if stdenv.system == "x86_64-linux" then "x86_64" else
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if stdenv.system == "powerpc-linux" then "powerpc" else
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if stdenv.system == "armv5tel-linux" then "arm" else
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abort "don't know what the kernel include directory is called for this platform";
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buildInputs = [perl];
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extraIncludeDirs =
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if stdenv.system == "powerpc-linux" then ["ppc"] else [];
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patchPhase = ''
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sed -i '/scsi/d' include/Kbuild
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'';
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buildPhase = ''
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make mrproper headers_check
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'';
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installPhase = ''
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make INSTALL_HDR_PATH=$out headers_install
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# Some builds (e.g. KVM) want a kernel.release.
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ensureDir $out/include/config
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echo "${version}-default" > $out/include/config/kernel.release
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'';
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# !!! hacky
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fixupPhase = ''
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ln -s asm $out/include/asm-$platform
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if test "$platform" = "i386" -o "$platform" = "x86_64"; then
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ln -s asm $out/include/asm-x86
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fi
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'';
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}
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