From 1b11f2b6ac6625912ba1ccf71eb9d913fbbc5eae Mon Sep 17 00:00:00 2001 From: Sergei Trofimovich Date: Sun, 22 May 2022 11:04:12 +0100 Subject: [PATCH] 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 --- pkgs/os-specific/linux/lockdep/default.nix | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/pkgs/os-specific/linux/lockdep/default.nix b/pkgs/os-specific/linux/lockdep/default.nix index 190941b1633a..047b2499a827 100644 --- a/pkgs/os-specific/linux/lockdep/default.nix +++ b/pkgs/os-specific/linux/lockdep/default.nix @@ -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