Commit 1b11f2b6 authored by Sergei Trofimovich's avatar Sergei Trofimovich
Browse files

lockdep: add -fcommon workaround 

Workaround build failure on -fno-common toolchains like upstream
gcc-10. Otherwise build fails as:

    ld: lockdep.o:/build/linux-5.0.21/tools/lib/lockdep/../../include/linux/rcu.h:5: multiple definition of
      `rcu_scheduler_active'; common.o:/build/linux-5.0.21/tools/lib/lockdep/../../include/linux/rcu.h:5: first defined here
parent 3b468e68

pkgs/os-specific/linux/lockdep/default.nix

+6 −0
Original line number Diff line number Diff line
@@ -23,6 +23,12 @@ stdenv.mkDerivation rec { 


  nativeBuildInputs = [ flex bison ];



  # Workaround build failure on -fno-common toolchains like upstream

  # gcc-10. Otherwise build fails as:

  #   ld: lockdep.o:/build/linux-5.0.21/tools/lib/lockdep/../../include/linux/rcu.h:5: multiple definition of

  #     `rcu_scheduler_active'; common.o:/build/linux-5.0.21/tools/lib/lockdep/../../include/linux/rcu.h:5: first defined here

  NIX_CFLAGS_COMPILE = "-fcommon";



  buildPhase = ''

    make defconfig

    make headers_install