{ lib, stdenv, callPackage , withLinuxHeaders ? true , profilingLibraries ? false , withGd ? false , withLibcrypt? false , buildPackages }: let gdCflags = [ "-Wno-error=stringop-truncation" "-Wno-error=missing-attributes" "-Wno-error=array-bounds" ]; in (callPackage ./common.nix { inherit stdenv; } { inherit withLinuxHeaders withGd profilingLibraries withLibcrypt; pname = "glibc" + lib.optionalString withGd "-gd"; }).overrideAttrs(previousAttrs: { # Note: # Things you write here override, and do not add to, # the values in `common.nix`. # (For example, if you define `patches = [...]` here, it will # override the patches in `common.nix` -- so instead you should # write `patches = (previousAttrs.patches or []) ++ [ ... ]`. NIX_NO_SELF_RPATH = true; postConfigure = '' # Hack: get rid of the `-static' flag set by the bootstrap stdenv. # This has to be done *after* `configure' because it builds some # test binaries. export NIX_CFLAGS_LINK= export NIX_LDFLAGS_BEFORE= export NIX_DONT_SET_RPATH=1 unset CFLAGS # Apparently --bindir is not respected. makeFlagsArray+=("bindir=$bin/bin" "sbindir=$bin/sbin" "rootsbindir=$bin/sbin") '' + lib.optionalString stdenv.buildPlatform.isDarwin '' # ld-wrapper will otherwise attempt to inject CoreFoundation into ld-linux's RUNPATH export NIX_COREFOUNDATION_RPATH= ''; # The pie, stackprotector and fortify hardening flags are autodetected by # glibc and enabled by default if supported. Setting it for every gcc # invocation does not work. hardeningDisable = [ "fortify" "pie" "stackprotector" ]; env = (previousAttrs.env or { }) // { NIX_CFLAGS_COMPILE = (previousAttrs.env.NIX_CFLAGS_COMPILE or "") + lib.concatStringsSep " " (builtins.concatLists [ (lib.optionals withGd gdCflags) # Fix -Werror build failure when building glibc with musl with GCC >= 8, see: # https://github.com/NixOS/nixpkgs/pull/68244#issuecomment-544307798 (lib.optional stdenv.hostPlatform.isMusl "-Wno-error=attribute-alias") (lib.optionals ((stdenv.hostPlatform != stdenv.buildPlatform) || stdenv.hostPlatform.isMusl) [ # Ignore "error: '__EI___errno_location' specifies less restrictive attributes than its target '__errno_location'" # New warning as of GCC 9 # Same for musl: https://github.com/NixOS/nixpkgs/issues/78805 "-Wno-error=missing-attributes" ]) (lib.optionals (stdenv.hostPlatform.isPower64) [ # Do not complain about the Processor Specific ABI (i.e. the # choice to use IEEE-standard `long double`). We pass this # flag in order to mute a `-Werror=psabi` passed by glibc; # hopefully future glibc releases will not pass that flag. "-Wno-error=psabi" ]) ]); }; # glibc needs to `dlopen()` `libgcc_s.so` but does not link # against it. Furthermore, glibc doesn't use the ordinary # `dlopen()` call to do this; instead it uses one which ignores # most paths: # # https://sourceware.org/legacy-ml/libc-help/2013-11/msg00026.html # # In order to get it to not ignore `libgcc_s.so`, we have to add its path to # `user-defined-trusted-dirs`: # # https://sourceware.org/git/?p=glibc.git;a=blob;f=elf/Makefile;h=b509b3eada1fb77bf81e2a0ca5740b94ad185764#l1355 # # Conveniently, this will also inform Nix of the fact that glibc depends on # gcc.libgcc, since the path will be embedded in the resulting binary. # makeFlags = (previousAttrs.makeFlags or []) ++ lib.optionals (stdenv.cc.cc?libgcc) [ "user-defined-trusted-dirs=${stdenv.cc.cc.libgcc}/lib" ]; postInstall = (if stdenv.hostPlatform == stdenv.buildPlatform then '' echo SUPPORTED-LOCALES=C.UTF-8/UTF-8 > ../glibc-2*/localedata/SUPPORTED make -j''${NIX_BUILD_CORES:-1} localedata/install-locales '' else lib.optionalString stdenv.buildPlatform.isLinux '' # This is based on http://www.linuxfromscratch.org/lfs/view/development/chapter06/glibc.html # Instead of using their patch to build a build-native localedef, # we simply use the one from buildPackages pushd ../glibc-2*/localedata export I18NPATH=$PWD GCONV_PATH=$PWD/../iconvdata mkdir -p $NIX_BUILD_TOP/${buildPackages.glibc}/lib/locale ${lib.getBin buildPackages.glibc}/bin/localedef \ --alias-file=../intl/locale.alias \ -i locales/C \ -f charmaps/UTF-8 \ --prefix $NIX_BUILD_TOP \ ${if stdenv.hostPlatform.parsed.cpu.significantByte.name == "littleEndian" then "--little-endian" else "--big-endian"} \ C.UTF-8 cp -r $NIX_BUILD_TOP/${buildPackages.glibc}/lib/locale $out/lib popd '') + '' test -f $out/etc/ld.so.cache && rm $out/etc/ld.so.cache if test -n "$linuxHeaders"; then # Include the Linux kernel headers in Glibc, except the `scsi' # subdirectory, which Glibc provides itself. (cd $dev/include && \ ln -sv $(ls -d $linuxHeaders/include/* | grep -v scsi\$) .) fi # Fix for NIXOS-54 (ldd not working on x86_64). Make a symlink # "lib64" to "lib". if test -n "$is64bit"; then ln -s lib $out/lib64 fi # Get rid of more unnecessary stuff. rm -rf $out/var $bin/bin/sln # Backwards-compatibility to fix e.g. # "configure: error: Pthreads are required to build libgomp" during `gcc`-build # because it's not actually needed anymore to link against `pthreads` since # it's now part of `libc.so.6` itself, but the gcc build breaks if # this doesn't work. ln -sf $out/lib/libpthread.so.0 $out/lib/libpthread.so ln -sf $out/lib/librt.so.1 $out/lib/librt.so ln -sf $out/lib/libdl.so.2 $out/lib/libdl.so ln -sf $out/lib/libutil.so.1 $out/lib/libutil.so touch $out/lib/libpthread.a # Put libraries for static linking in a separate output. Note # that libc_nonshared.a and libpthread_nonshared.a are required # for dynamically-linked applications. mkdir -p $static/lib mv $out/lib/*.a $static/lib mv $static/lib/lib*_nonshared.a $out/lib # Some of *.a files are linker scripts where moving broke the paths. sed "/^GROUP/s|$out/lib/lib|$static/lib/lib|g" \ -i "$static"/lib/*.a # Work around a Nix bug: hard links across outputs cause a build failure. cp $bin/bin/getconf $bin/bin/getconf_ mv $bin/bin/getconf_ $bin/bin/getconf ''; separateDebugInfo = true; passthru = (previousAttrs.passthru or {}) // lib.optionalAttrs (stdenv.cc.cc?libgcc) { inherit (stdenv.cc.cc) libgcc; }; meta = (previousAttrs.meta or {}) // { description = "The GNU C Library"; }; })