From 47fe3b9ac92d4a5c51b54d4f8f76633b22d662bd Mon Sep 17 00:00:00 2001
From: Simon Hollingshead <me@simonhollingshead.com>
Date: Fri, 23 Feb 2024 15:42:44 +0000
Subject: [PATCH] lucenepp: Build with C++14 instead of C++11.

This allows use of newer versions of gtest.
---
 pkgs/development/libraries/lucene++/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/libraries/lucene++/default.nix b/pkgs/development/libraries/lucene++/default.nix
index 7755692d2c04..41aadfcdc747 100644
--- a/pkgs/development/libraries/lucene++/default.nix
+++ b/pkgs/development/libraries/lucene++/default.nix
@@ -29,9 +29,12 @@ stdenv.mkDerivation rec {
     })
   ];
 
+  # Don't use the built in gtest - but the nixpkgs one requires C++14.
   postPatch = ''
     substituteInPlace src/test/CMakeLists.txt \
       --replace "add_subdirectory(gtest)" ""
+    substituteInPlace CMakeLists.txt \
+      --replace "set(CMAKE_CXX_STANDARD 11)" "set(CMAKE_CXX_STANDARD 14)"
   '';
 
   doCheck = true;