Don't check for EINTR and replace xioctl with ioctl

This should be safe todo unless we are writing a signal handler.

CMakeLists.txt

@@ -136,7 +136,7 @@ OCV_OPTION(WITH_TBB            "Include Intel TBB support"                   OFF
 OCV_OPTION(WITH_CSTRIPES       "Include C= support"                          OFF  IF WIN32 )
 OCV_OPTION(WITH_TIFF           "Include TIFF support"                        ON   IF (NOT IOS) )
 OCV_OPTION(WITH_UNICAP         "Include Unicap support (GPL)"                OFF  IF (UNIX AND NOT APPLE AND NOT ANDROID) )
-OCV_OPTION(WITH_V4L            "Include Video 4 Linux support"               ON   IF (UNIX AND NOT APPLE AND NOT ANDROID) )
+OCV_OPTION(WITH_V4L            "Include Video 4 Linux support"               ON   IF (UNIX AND NOT ANDROID) )
 OCV_OPTION(WITH_VIDEOINPUT     "Build HighGUI with DirectShow support"       ON   IF WIN32 )
 OCV_OPTION(WITH_XIMEA          "Include XIMEA cameras support"               OFF  IF (NOT ANDROID AND NOT APPLE) )
 OCV_OPTION(WITH_XINE           "Include Xine support (GPL)"                  OFF  IF (UNIX AND NOT APPLE AND NOT ANDROID) )
@@ -722,13 +722,15 @@ if(DEFINED WITH_V4L)
   else()
     set(HAVE_CAMV4L_STR "NO")
   endif()
-  if(HAVE_CAMV4L2 OR HAVE_VIDEOIO)
+  if(HAVE_CAMV4L2)
     set(HAVE_CAMV4L2_STR "YES")
+  elseif(HAVE_VIDEOIO)
+    set(HAVE_CAMV4L2_STR "YES(videoio)")
   else()
     set(HAVE_CAMV4L2_STR "NO")
   endif()
   status("    V4L/V4L2:"       HAVE_LIBV4L         THEN "Using libv4l (ver ${ALIASOF_libv4l1_VERSION})"
-                                                                                                   ELSE "${HAVE_CAMV4L_STR}/${HAVE_CAMV4L2_STR}")
+                                                   ELSE "${HAVE_CAMV4L_STR}/${HAVE_CAMV4L2_STR}")
 endif(DEFINED WITH_V4L)
 
 if(DEFINED WITH_VIDEOINPUT)

cmake/OpenCVFindLibsVideo.cmake

@@ -85,18 +85,12 @@ if(WITH_XINE)
 endif(WITH_XINE)
 
 # --- V4L ---
-ocv_clear_vars(HAVE_LIBV4L HAVE_CAMV4L HAVE_CAMV4L2 HAVE_IOCTL_ULONG)
+ocv_clear_vars(HAVE_LIBV4L HAVE_CAMV4L HAVE_CAMV4L2 HAVE_VIDEOIO)
 if(WITH_V4L)
   CHECK_MODULE(libv4l1 HAVE_LIBV4L)
   CHECK_INCLUDE_FILE(linux/videodev.h HAVE_CAMV4L)
   CHECK_INCLUDE_FILE(linux/videodev2.h HAVE_CAMV4L2)
   CHECK_INCLUDE_FILE(sys/videoio.h HAVE_VIDEOIO)
-  INCLUDE(CheckPrototypeDefinition)
-  CHECK_PROTOTYPE_DEFINITION(ioctl
-    "int ioctl(int d, unsigned long request, ...)"
-    "-1"
-    "sys/ioctl.h"
-    HAVE_IOCTL_ULONG)
 endif(WITH_V4L)
 
 # --- OpenNI ---

cmake/templates/cvconfig.h.cmake

@@ -25,9 +25,6 @@
 /* V4L/V4L2 capturing support via libv4l */
 #cmakedefine HAVE_LIBV4L
 
-/* ioctl takes unsigned long request rather than int */
-#cmakedefine HAVE_IOCTL_ULONG
-
 /* Carbon windowing environment */
 #cmakedefine HAVE_CARBON