From b9454c0fb3bb0e39b5226f5783b36272692c7e19 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joni=20R=C3=A4s=C3=A4nen?= <joni.rasanen@iki.fi>
Date: Fri, 28 Apr 2023 14:25:43 +0300
Subject: [PATCH] Fix compilation if sys/sysctl.h is not present

Glibc 2.32 removes sys/sysctl.h as it is no longer needed. This commit fixes
the compilation with newer versions of Glibc by checking for sys/sysctl.h with
has_include, which in turn is only used if it is supported. This should mean
that this commit does not prevent any configuration that worked before from working.
---
 libavutil/cpu.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libavutil/cpu.c b/libavutil/cpu.c
index a22da0fa..d3bde0a0 100644
--- a/libavutil/cpu.c
+++ b/libavutil/cpu.c
@@ -39,8 +39,16 @@
 #include <sys/param.h>
 #endif
 #include <sys/types.h>
+
+
+#if __cplusplus >= 201703L
+#if __has_include(<sys/sysctl.h>)
 #include <sys/sysctl.h>
 #endif
+#else
+#include <sys/sysctl.h>
+#endif
+#endif
 #if HAVE_UNISTD_H
 #include <unistd.h>
 #endif