v4l2: update headers version check

9b49f7c9 · Rémi Denis-Courmont · 3359912d · 9b49f7c9
Commit 9b49f7c9 authored Apr 07, 2012 by Rémi Denis-Courmont
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modules/access/v4l2/v4l2.h modules/access/v4l2/v4l2.h +8 -6

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--- a/modules/access/v4l2/v4l2.h
+++ b/modules/access/v4l2/v4l2.h
@@ -18,17 +18,19 @@
 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

-#if defined(HAVE_LINUX_VIDEODEV2_H)
+#if defined (HAVE_LINUX_VIDEODEV2_H)
 # include <linux/videodev2.h>
-#elif defined(HAVE_SYS_VIDEOIO_H)
+#elif defined (HAVE_SYS_VIDEOIO_H)
 # include <sys/videoio.h>
 #else
 # error "No Video4Linux2 headers found."
 #endif
+#ifndef V4L2_CAP_DEVICE_CAPS
+# warning Please update Video4Linux2 headers!
+#endif

 /* Hacks to compile with old headers */
 #ifndef V4L2_CTRL_FLAG_VOLATILE /* 3.2 */
-# warning Please update Video4Linux2 headers!
 # define V4L2_CTRL_FLAG_VOLATILE 0x0080
 # define V4L2_CID_POWER_LINE_FREQUENCY_AUTO 3
 # define V4L2_STD_G (V4L2_STD_PAL_G|V4L2_STD_SECAM_G)