From 2c577ace159537c886d78c428c5ca367c7ea390c Mon Sep 17 00:00:00 2001
From: Martin Pulec <martin.pulec@cesnet.cz>
Date: Wed, 16 Apr 2025 14:28:49 +0200
Subject: [PATCH] configure.ac: small fix

Set sdl_version=0 - later in testcard_extras it is numerically compared
so if set to "" it produced a warning.
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 47ee015fc..b1963b7b5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1240,7 +1240,7 @@ fi
 # SDL1/2/3 Stuff
 # ------------------------------------------------------------------------------
 sdl=no
-sdl_version=
+sdl_version=0
 sdl_version_str=
 sdl_ver_suffix=
 AC_ARG_ENABLE(sdl,