6740593bdd
The current version of glibc implements support for kernels down to
3.2.0 (and we make sure to enable such support with apporopriate
--enable-kernel setting). The current RHEL6 operating system is based on
a maintained kernel based on 2.6.32 with lots of backports. We provide
basic support for this specific kernel by patching glibc to provide an
exception for this specific version of kernel. This allows for nixpkgs
software distribution to work on RHEL6 and it does so quite well with
almost no problems. There are, however, a few syscalls that are missing
in the 2.6.32 kernel, one of which is prlimit64. This commit provides a
fallback that uses an older {get,set}rlimit syscalls in cases when
prlimit64 is not available. This should streamline the experience for
nixpkgs users wanting to run it on RHEL6, namely, this fixes one of the
tests in findutils.
See also discussion in guix:
https://lists.gnu.org/archive/html/guix-devel/2018-03/msg00356.html
251 lines
8.4 KiB
Nix
251 lines
8.4 KiB
Nix
/* Build configuration used to build glibc, Info files, and locale
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information.
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Note that this derivation has multiple outputs and does not respect the
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standard convention of putting the executables into the first output. The
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first output is `lib` so that the libraries provided by this derivation
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can be accessed directly, e.g.
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"${pkgs.glibc}/lib/ld-linux-x86_64.so.2"
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The executables are put into `bin` output and need to be referenced via
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the `bin` attribute of the main package, e.g.
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"${pkgs.glibc.bin}/bin/ldd".
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The executables provided by glibc typically include `ldd`, `locale`, `iconv`
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but the exact set depends on the library version and the configuration.
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*/
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{ stdenv, lib
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, buildPackages
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, fetchurl
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, linuxHeaders ? null
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, gd ? null, libpng ? null
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, libidn2
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, bison
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, python3Minimal
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}:
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{ name
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, withLinuxHeaders ? false
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, profilingLibraries ? false
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, withGd ? false
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, meta
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, ...
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} @ args:
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let
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version = "2.30";
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patchSuffix = "";
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sha256 = "1bxqpg91d02qnaz837a5kamm0f43pr1il4r9pknygywsar713i72";
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in
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assert withLinuxHeaders -> linuxHeaders != null;
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assert withGd -> gd != null && libpng != null;
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stdenv.mkDerivation ({
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inherit version;
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linuxHeaders = if withLinuxHeaders then linuxHeaders else null;
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inherit (stdenv) is64bit;
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enableParallelBuilding = true;
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patches =
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[
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/* Have rpcgen(1) look for cpp(1) in $PATH. */
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./rpcgen-path.patch
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/* Allow NixOS and Nix to handle the locale-archive. */
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./nix-locale-archive.patch
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/* Don't use /etc/ld.so.cache, for non-NixOS systems. */
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./dont-use-system-ld-so-cache.patch
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/* Don't use /etc/ld.so.preload, but /etc/ld-nix.so.preload. */
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./dont-use-system-ld-so-preload.patch
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/* The command "getconf CS_PATH" returns the default search path
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"/bin:/usr/bin", which is inappropriate on NixOS machines. This
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patch extends the search path by "/run/current-system/sw/bin". */
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./fix_path_attribute_in_getconf.patch
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/* Allow running with RHEL 6 -like kernels. The patch adds an exception
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for glibc to accept 2.6.32 and to tag the ELFs as 2.6.32-compatible
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(otherwise the loader would refuse libc).
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Note that glibc will fully work only on their heavily patched kernels
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and we lose early mismatch detection on 2.6.32.
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On major glibc updates we should check that the patched kernel supports
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all the required features. ATM it's verified up to glibc-2.26-131.
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# HOWTO: check glibc sources for changes in kernel requirements
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git log -p glibc-2.25.. sysdeps/unix/sysv/linux/x86_64/kernel-features.h sysdeps/unix/sysv/linux/kernel-features.h
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# get kernel sources (update the URL)
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mkdir tmp && cd tmp
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curl http://vault.centos.org/6.9/os/Source/SPackages/kernel-2.6.32-696.el6.src.rpm | rpm2cpio - | cpio -idmv
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tar xf linux-*.bz2
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# check syscall presence, for example
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less linux-*?/arch/x86/kernel/syscall_table_32.S
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*/
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./allow-kernel-2.6.32.patch
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/* Provide a fallback for missing prlimit64 syscall on RHEL 6 -like
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kernels.
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This patch is maintained by @veprbl. If it gives you trouble, feel
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free to ping me, I'd be happy to help.
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*/
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(fetchurl {
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url = "https://git.savannah.gnu.org/cgit/guix.git/plain/gnu/packages/patches/glibc-reinstate-prlimit64-fallback.patch?id=eab07e78b691ae7866267fc04d31c7c3ad6b0eeb";
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sha256 = "091bk3kyrx1gc380gryrxjzgcmh1ajcj8s2rjhp2d2yzd5mpd5ps";
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})
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/* Provide utf-8 locales by default, so we can use it in stdenv without depending on our large locale-archive. */
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(fetchurl {
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url = "https://salsa.debian.org/glibc-team/glibc/raw/49767c9f7de4828220b691b29de0baf60d8a54ec/debian/patches/localedata/locale-C.diff";
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sha256 = "0irj60hs2i91ilwg5w7sqrxb695c93xg0ik7yhhq9irprd7fidn4";
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})
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]
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++ lib.optionals stdenv.isx86_64 [
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./fix-x64-abi.patch
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./2.27-CVE-2019-19126.patch
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]
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++ lib.optional stdenv.hostPlatform.isMusl ./fix-rpc-types-musl-conflicts.patch
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++ lib.optional stdenv.buildPlatform.isDarwin ./darwin-cross-build.patch;
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postPatch =
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''
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# Needed for glibc to build with the gnumake 3.82
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# http://comments.gmane.org/gmane.linux.lfs.support/31227
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sed -i 's/ot \$/ot:\n\ttouch $@\n$/' manual/Makefile
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# nscd needs libgcc, and we don't want it dynamically linked
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# because we don't want it to depend on bootstrap-tools libs.
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echo "LDFLAGS-nscd += -static-libgcc" >> nscd/Makefile
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''
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# FIXME: find a solution for infinite recursion in cross builds.
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# For now it's hopefully acceptable that IDN from libc doesn't reliably work.
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+ lib.optionalString (stdenv.hostPlatform == stdenv.buildPlatform) ''
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# Ensure that libidn2 is found.
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patch -p 1 <<EOF
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--- a/inet/idna.c
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+++ b/inet/idna.c
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@@ -25,1 +25,1 @@
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-#define LIBIDN2_SONAME "libidn2.so.0"
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+#define LIBIDN2_SONAME "${lib.getLib libidn2}/lib/libidn2.so.0"
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EOF
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'';
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configureFlags =
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[ "-C"
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"--enable-add-ons"
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"--enable-obsolete-nsl"
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"--enable-obsolete-rpc"
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"--sysconfdir=/etc"
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"--enable-stackguard-randomization"
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(lib.withFeatureAs withLinuxHeaders "headers" "${linuxHeaders}/include")
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(lib.enableFeature profilingLibraries "profile")
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] ++ lib.optionals withLinuxHeaders [
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"--enable-kernel=3.2.0" # can't get below with glibc >= 2.26
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] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
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(lib.flip lib.withFeature "fp"
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(stdenv.hostPlatform.platform.gcc.float or (stdenv.hostPlatform.parsed.abi.float or "hard") == "soft"))
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"--with-__thread"
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] ++ lib.optionals (stdenv.hostPlatform == stdenv.buildPlatform && stdenv.hostPlatform.isAarch32) [
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"--host=arm-linux-gnueabi"
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"--build=arm-linux-gnueabi"
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# To avoid linking with -lgcc_s (dynamic link)
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# so the glibc does not depend on its compiler store path
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"libc_cv_as_needed=no"
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] ++ lib.optional withGd "--with-gd";
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installFlags = [ "sysconfdir=$(out)/etc" ];
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outputs = [ "out" "bin" "dev" "static" ];
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depsBuildBuild = [ buildPackages.stdenv.cc ];
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nativeBuildInputs = [ bison python3Minimal ];
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buildInputs = [ linuxHeaders ] ++ lib.optionals withGd [ gd libpng ];
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# Needed to install share/zoneinfo/zone.tab. Set to impure /bin/sh to
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# prevent a retained dependency on the bootstrap tools in the stdenv-linux
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# bootstrap.
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BASH_SHELL = "/bin/sh";
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passthru = { inherit version; };
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}
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// (removeAttrs args [ "withLinuxHeaders" "withGd" ]) //
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{
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name = name + "-${version}${patchSuffix}";
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src = fetchurl {
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url = "mirror://gnu/glibc/glibc-${version}.tar.xz";
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inherit sha256;
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};
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# Remove absolute paths from `configure' & co.; build out-of-tree.
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preConfigure = ''
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export PWD_P=$(type -tP pwd)
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for i in configure io/ftwtest-sh; do
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# Can't use substituteInPlace here because replace hasn't been
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# built yet in the bootstrap.
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sed -i "$i" -e "s^/bin/pwd^$PWD_P^g"
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done
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mkdir ../build
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cd ../build
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configureScript="`pwd`/../$sourceRoot/configure"
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${lib.optionalString (stdenv.cc.libc != null)
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''makeFlags="$makeFlags BUILD_LDFLAGS=-Wl,-rpath,${stdenv.cc.libc}/lib"''
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}
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'' + lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
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sed -i s/-lgcc_eh//g "../$sourceRoot/Makeconfig"
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cat > config.cache << "EOF"
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libc_cv_forced_unwind=yes
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libc_cv_c_cleanup=yes
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libc_cv_gnu89_inline=yes
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EOF
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'';
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preBuild = lib.optionalString withGd "unset NIX_DONT_SET_RPATH";
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doCheck = false; # fails
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meta = {
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homepage = https://www.gnu.org/software/libc/;
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description = "The GNU C Library";
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longDescription =
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'' Any Unix-like operating system needs a C library: the library which
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defines the "system calls" and other basic facilities such as
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open, malloc, printf, exit...
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The GNU C library is used as the C library in the GNU system and
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most systems with the Linux kernel.
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'';
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license = lib.licenses.lgpl2Plus;
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maintainers = [ lib.maintainers.eelco ];
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platforms = lib.platforms.linux;
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} // meta;
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}
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// lib.optionalAttrs (stdenv.hostPlatform != stdenv.buildPlatform) {
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preInstall = null; # clobber the native hook
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# To avoid a dependency on the build system 'bash'.
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preFixup = ''
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rm -f $bin/bin/{ldd,tzselect,catchsegv,xtrace}
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'';
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})
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