From a38af4931825722f973ad89e99d8c7e43fe6865a Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Sun, 5 Jun 2022 20:08:49 +0100
Subject: [PATCH] lilo: add -fcommon workaround

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

    ld: identify.o:(.bss+0x0): multiple definition of `identify';
      common.o:(.bss+0x160): first defined here
---
 pkgs/tools/misc/lilo/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/tools/misc/lilo/default.nix b/pkgs/tools/misc/lilo/default.nix
index bba9db38390..f72cdc422be 100644
--- a/pkgs/tools/misc/lilo/default.nix
+++ b/pkgs/tools/misc/lilo/default.nix
@@ -8,6 +8,12 @@ stdenv.mkDerivation rec {
     hash = "sha256-4VjxneRWDJNevgUHwht5v/F2GLkjDYB2/oxf/5/b1bE=";
   };
   nativeBuildInputs = [ dev86 sharutils ];
+
+  # Workaround build failure on -fno-common toolchains:
+  #   ld: identify.o:(.bss+0x0): multiple definition of `identify';
+  #     common.o:(.bss+0x160): first defined here
+  NIX_CFLAGS_COMPILE = "-fcommon";
+
   makeFlags = [
     "DESTDIR=${placeholder "out"}"
     "SBIN_DIR=/bin"