From 9472021ccd1dddc074186703fa6f5a65db043967 Mon Sep 17 00:00:00 2001
From: Geoff Norton <geoff.norton@sony.com>
Date: Thu, 20 Apr 2023 20:27:00 -0700
Subject: [PATCH] isl: Fix isl 0.20 on riscv due to out of date config.guess

---
 pkgs/development/libraries/isl/generic.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/isl/generic.nix b/pkgs/development/libraries/isl/generic.nix
index 039d7138278b..fb71a3640663 100644
--- a/pkgs/development/libraries/isl/generic.nix
+++ b/pkgs/development/libraries/isl/generic.nix
@@ -5,7 +5,7 @@
 , patches ? []
 }:
 
-{ lib, stdenv, fetchurl, gmp
+{ lib, stdenv, fetchurl, gmp, autoreconfHook
 }:
 
 stdenv.mkDerivation {
@@ -19,6 +19,7 @@ stdenv.mkDerivation {
   inherit patches;
 
   strictDeps = true;
+  nativeBuildInputs = lib.optionals (stdenv.hostPlatform.isRiscV && lib.versionOlder version "0.24") [ autoreconfHook ];
   buildInputs = [ gmp ];
 
   inherit configureFlags;