From 329b0da5bad4b69affc7d544b9a090bb62ce5359 Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Wed, 24 Aug 2022 07:31:13 +0100
Subject: [PATCH] bpftools: use binutils-2.38 for linux before 5.19

Without the change bpftools build fails on binutils-2.39 due to API change:

    jit_disasm.c:105:17: error: too few arguments to function 'init_disassemble_info'
      105 |                 init_disassemble_info(&info, stdout,
          |                 ^~~~~~~~~~~~~~~~~~~~~
---
 pkgs/os-specific/linux/bpftools/default.nix | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/pkgs/os-specific/linux/bpftools/default.nix b/pkgs/os-specific/linux/bpftools/default.nix
index b4621feeb31f..5a02a1022d59 100644
--- a/pkgs/os-specific/linux/bpftools/default.nix
+++ b/pkgs/os-specific/linux/bpftools/default.nix
@@ -1,15 +1,20 @@
 { lib, stdenv
-, libopcodes, libbfd, elfutils, readline
+, libopcodes, libopcodes_2_38
+, libbfd, libbfd_2_38
+, elfutils, readline
 , linuxPackages_latest, zlib
 , python3, bison, flex
 }:
 
-stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   pname = "bpftools";
   inherit (linuxPackages_latest.kernel) version src;
 
   nativeBuildInputs = [ python3 bison flex ];
-  buildInputs = [ libopcodes libbfd elfutils zlib readline ];
+  buildInputs = (if (lib.versionAtLeast version "5.20")
+                 then [ libopcodes libbfd ]
+                 else [ libopcodes_2_38 libbfd_2_38 ])
+    ++ [ elfutils zlib readline ];
 
   preConfigure = ''
     patchShebangs scripts/bpf_doc.py