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xgcc: avoid libc.so mix between gcc and binutils-ld linker plugin

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Without the change when I attempt to built `nixpkgs` with weekly
`gcc-13` (it pulls in `flex` as a build input`) I am getting build
failure related to glibc mix caused by glibc loading:

    ...-binutils-patchelfed-ld-2.40/bin/ld: ...-xgcc-13.0.0/libexec/gcc/x86_64-unknown-linux-gnu/13.0.1/liblto_plugin.so:
    error loading plugin: ...-bootstrap-tools/lib/libpthread.so.0: undefined symbol: __libc_vfork, version GLIBC_PRIVATE

The change disables LTO plugin entirely to avoid loading of `glibc` mix.
This commit is contained in:
Sergei Trofimovich 2023-04-04 07:35:03 +01:00
parent 80f198ff3a
commit c2e14a73e6
1 changed files with 7 additions and 0 deletions
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7
pkgs/stdenv/linux/default.nix
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@ -341,6 +341,13 @@ in
#
name = "xgcc";
# xgcc uses ld linked against nixpkgs' glibc and gcc built
# against bootstrapTools glibc. We can't allow loading
# $out/libexec/gcc/x86_64-unknown-linux-gnu/13.0.1/liblto_plugin.so
# to mix libc.so:
# ...-binutils-patchelfed-ld-2.40/bin/ld: ...-xgcc-13.0.0/libexec/gcc/x86_64-unknown-linux-gnu/13.0.1/liblto_plugin.so:
# error loading plugin: ...-bootstrap-tools/lib/libpthread.so.0: undefined symbol: __libc_vfork, version GLIBC_PRIVATE
enableLTO = false;
})).overrideAttrs (a: {
# This signals to cc-wrapper (as overridden above in this file) to add `--sysroot`