From 9579db6b02db1cc89083d2feee123b003a34bda3 Mon Sep 17 00:00:00 2001
From: annalee <168274788+annaleeleaves@users.noreply.github.com>
Date: Tue, 14 May 2024 11:29:07 +0000
Subject: [PATCH] openbabel2: -std=c++14 for code from 2016

fix clang build due to usage of `std::binary_function`
---
 pkgs/development/libraries/openbabel/2.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/libraries/openbabel/2.nix b/pkgs/development/libraries/openbabel/2.nix
index 0cc752d993fb..b69efd866467 100644
--- a/pkgs/development/libraries/openbabel/2.nix
+++ b/pkgs/development/libraries/openbabel/2.nix
@@ -25,6 +25,8 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ zlib libxml2 eigen python3 cairo pcre ];
 
+  cmakeFlags = [ "-DCMAKE_CXX_STANDARD=14" ];
+
   nativeBuildInputs = [ cmake pkg-config ];
 
   meta = with lib; {