From 4b46a387a9f10d1f3d59fcd026ae8a887e5adba4 Mon Sep 17 00:00:00 2001
From: Guillaume Girol <symphorien+git@xlumurb.eu>
Date: Sat, 3 Jan 2026 12:00:00 +0000
Subject: [PATCH] epkowa: fix build with gcc 15

Fixes: https://github.com/NixOS/nixpkgs/issues/476021
---
 pkgs/by-name/ep/epkowa/package.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/by-name/ep/epkowa/package.nix b/pkgs/by-name/ep/epkowa/package.nix
index 1f179ab71018..8a994baa8cd2 100644
--- a/pkgs/by-name/ep/epkowa/package.nix
+++ b/pkgs/by-name/ep/epkowa/package.nix
@@ -95,6 +95,8 @@ stdenv.mkDerivation rec {
   configureFlags = [
     "--enable-dependency-reduction"
     "--disable-frontend"
+    # fix build with gcc 15
+    "CFLAGS=-std=gnu17"
   ];
 
   postConfigure = ''