From: Dmitry V. Levin <ldv@altlinux.org>
Date: Sat, 14 May 2016 00:36:27 +0000 (+0000)
Subject: v4l2: fix build with old kernel headers
X-Git-Tag: v4.12~160
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a8443f8695303401f561fe5747caab9b28672e9d;p=strace

v4l2: fix build with old kernel headers

Prior to v2.6.25-rc3, <linux/videodev2.h> didn't include all
required headers, resulting to omission of V4L2_* constants.

This issue doesn't arise in v4l2.c and tests/ioctl_v4l2.c files
because they already include all necessary headers themselves.

* configure.ac (AC_CHECK_DECLS): Include <sys/time.h>, <linux/ioctl.h>,
and <linux/types.h> before <linux/videodev2.h>.
---

diff --git a/configure.ac b/configure.ac
index b0758ae1..e50390e7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -837,7 +837,10 @@ AC_CHECK_DECLS(m4_normalize([
 	V4L2_CTRL_TYPE_STRING,
 	V4L2_CTRL_TYPE_BITMASK,
 	V4L2_CTRL_TYPE_INTEGER_MENU
-]),,, [#include <linux/videodev2.h>])
+]),,, [#include <sys/time.h>
+#include <linux/ioctl.h>
+#include <linux/types.h>
+#include <linux/videodev2.h>])
 
 AC_CACHE_CHECK([for BLKGETSIZE64], [ac_cv_have_blkgetsize64],
 	[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([