From a1cb628cce21e6780a61171446a6191d82cf92bd Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Fri, 2 May 2025 13:38:49 +0200
Subject: [PATCH] zvbi: fix cross to musl

As with several other packages, we have to tell autoconf to please
assume malloc works properly.
---
 pkgs/by-name/zv/zvbi/package.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/by-name/zv/zvbi/package.nix b/pkgs/by-name/zv/zvbi/package.nix
index d7dfa3900110..60a80c9269b7 100644
--- a/pkgs/by-name/zv/zvbi/package.nix
+++ b/pkgs/by-name/zv/zvbi/package.nix
@@ -21,6 +21,11 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-knc9PejugU6K4EQflfz91keZr3ZJqZu2TKFQFFJrxiI=";
   };
 
+  configureFlags = lib.optionals (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform) [
+    "ac_cv_func_malloc_0_nonnull=yes"
+    "ac_cv_func_realloc_0_nonnull=yes"
+  ];
+
   nativeBuildInputs = [
     autoreconfHook
     validatePkgConfig