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c0085404bd
Very confusingly, the `isPowerPC` predicate in
`lib/systems/inspect.nix` does *not* match `powerpc64le`!
This is because `isPowerPC` is defined as
isPowerPC = { cpu = cpuTypes.powerpc; };
Where `cpuTypes.powerpc` is:
{ bits = 32; significantByte = bigEndian; family = "power"; };
This means that the `isPowerPC` predicate actually only matches the
subset of machines marketed under this name which happen to be 32-bit
and running in big-endian mode which is equivalent to:
with stdenv.hostPlatform; isPower && isBigEndian && is32bit
This seems like a sharp edge that people could easily cut themselves
on. In fact, that has already happened: in
`linux/kernel/common-config.nix` there is a test which will always
fail:
(stdenv.hostPlatform.isPowerPC && stdenv.hostPlatform.is64bit)
A more subtle case of the strict isPowerPC being used instead of the
moreg general isPower accidentally are the GHC expressions:
Update pkgs/development/compilers/ghc/8.10.7.nix
Update pkgs/development/compilers/ghc/8.8.4.nix
Update pkgs/development/compilers/ghc/9.2.2.nix
Update pkgs/development/compilers/ghc/9.0.2.nix
Update pkgs/development/compilers/ghc/head.nix
Since the remaining legitimate use sites of isPowerPC are so few, remove
the isPowerPC predicate completely. The alternative expression above is
noted in the release notes as an alternative.
Co-authored-by: sternenseemann <sternenseemann@systemli.org>
96 lines
3.0 KiB
Nix
96 lines
3.0 KiB
Nix
{ stdenvNoCC, lib, buildPackages, fetchurl, perl, elf-header
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, bison ? null, flex ? null, python ? null, rsync ? null
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}:
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assert stdenvNoCC.hostPlatform.isAndroid ->
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(flex != null && bison != null && python != null && rsync != null);
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let
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makeLinuxHeaders = { src, version, patches ? [] }: stdenvNoCC.mkDerivation {
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inherit src;
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pname = "linux-headers";
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inherit version;
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ARCH = stdenvNoCC.hostPlatform.linuxArch;
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# It may look odd that we use `stdenvNoCC`, and yet explicit depend on a cc.
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# We do this so we have a build->build, not build->host, C compiler.
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depsBuildBuild = [ buildPackages.stdenv.cc ];
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# `elf-header` is null when libc provides `elf.h`.
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nativeBuildInputs = [
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perl elf-header
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] ++ lib.optionals stdenvNoCC.hostPlatform.isAndroid [
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flex bison python rsync
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];
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extraIncludeDirs = lib.optional (with stdenvNoCC.hostPlatform; isPower && is32bit && isBigEndian) ["ppc"];
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inherit patches;
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hardeningDisable = lib.optional stdenvNoCC.buildPlatform.isDarwin "format";
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makeFlags = [
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"SHELL=bash"
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# Avoid use of runtime build->host compilers for checks. These
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# checks only cared to work around bugs in very old compilers, so
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# these changes should be safe.
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"cc-version:=9999"
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"cc-fullversion:=999999"
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# `$(..)` expanded by make alone
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"HOSTCC:=$(CC_FOR_BUILD)"
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"HOSTCXX:=$(CXX_FOR_BUILD)"
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];
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# Skip clean on darwin, case-sensitivity issues.
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buildPhase = lib.optionalString (!stdenvNoCC.buildPlatform.isDarwin) ''
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make mrproper $makeFlags
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'' + (if stdenvNoCC.hostPlatform.isAndroid then ''
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make defconfig
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make headers_install
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'' else ''
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make headers $makeFlags
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'');
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checkPhase = ''
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make headers_check $makeFlags
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'';
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# The following command requires rsync:
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# make headers_install INSTALL_HDR_PATH=$out $makeFlags
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# but rsync depends on popt which does not compile on aarch64 without
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# updateAutotoolsGnuConfigScriptsHook which is not enabled in stage2,
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# so we replicate it with cp. This also reduces bootstrap closure size.
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installPhase = ''
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mkdir -p $out
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cp -r usr/include $out
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find $out -type f ! -name '*.h' -delete
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''
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# Some builds (e.g. KVM) want a kernel.release.
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+ ''
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mkdir -p $out/include/config
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echo "${version}-default" > $out/include/config/kernel.release
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'';
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meta = with lib; {
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description = "Header files and scripts for Linux kernel";
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license = licenses.gpl2;
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platforms = platforms.linux;
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};
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};
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in {
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inherit makeLinuxHeaders;
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linuxHeaders = let version = "5.17"; in
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makeLinuxHeaders {
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inherit version;
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src = fetchurl {
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url = "mirror://kernel/linux/kernel/v5.x/linux-${version}.tar.xz";
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sha256 = "1cdi43x4c3l4chznh57gm55szycj4wjlxl1dss1ilnfvvmhyypsm";
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};
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patches = [
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./no-relocs.patch # for building x86 kernel headers on non-ELF platforms
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];
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};
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}
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