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https://github.com/libsdl-org/SDL/pull/6217
From 04b9178a6746cfe9e4f8708befd3e00f95912a18 Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Mon, 12 Sep 2022 18:02:21 +0100
Subject: [PATCH] configure.ac: fix configure tests broken with Clang 15
(implicit function declarations)
Clang 15 makes implicit function declarations fatal by default which
leads to some configure tests silently failing/returning
the wrong result.
Signed-off-by: Sam James <sam@gentoo.org>
--- a/configure.ac
+++ b/configure.ac
@@ -2728,6 +2728,7 @@ CheckInputKD()
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <linux/kd.h>
#include <linux/keyboard.h>
+ #include <sys/ioctl.h>
]], [[
struct kbentry kbe;
kbe.kb_table = KG_CTRL;
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