From c2877ec5cc048e73283c749ff4dfecb5d6acb3d8 Mon Sep 17 00:00:00 2001
From: FlameFlag <git@ps1.sh>
Date: Sun, 19 Apr 2026 18:54:24 +0300
Subject: [PATCH] iverilog: fix Darwin build by setting `-std=gnu17`

Refs: https://github.com/NixOS/nixpkgs/issues/511329
---
 pkgs/by-name/iv/iverilog/package.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/by-name/iv/iverilog/package.nix b/pkgs/by-name/iv/iverilog/package.nix
index 0d694260f537..c32744a4d55d 100644
--- a/pkgs/by-name/iv/iverilog/package.nix
+++ b/pkgs/by-name/iv/iverilog/package.nix
@@ -51,6 +51,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   preConfigure = "sh autoconf.sh";
 
+  configureFlags = [ "CFLAGS=-std=gnu17" ];
+
   enableParallelBuilding = true;
 
   # NOTE(jleightcap): the `make check` target only runs a "Hello, World"-esque sanity check.