[FFmpeg-cvslog] configure: fix and simplify xlib check

[James Almer]

ffmpeg | branch: master | James Almer <jamrial at gmail.com> | Sun May  6 20:45:53 2018 -0300| [0736f32a4facddbd953977ca614a3ee6d8a6e1d7] | committer: James Almer

configure: fix and simplify xlib check

Signed-off-by: James Almer <jamrial at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0736f32a4facddbd953977ca614a3ee6d8a6e1d7
---

 configure | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index 6a69695e32..7c143238a8 100755
--- a/configure
+++ b/configure
@@ -3228,8 +3228,7 @@ v4l2_outdev_suggest="libv4l2"
 vfwcap_indev_deps="vfw32 vfwcap_defines"
 xcbgrab_indev_deps="libxcb"
 xcbgrab_indev_suggest="libxcb_shm libxcb_shape libxcb_xfixes"
-xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
-xv_outdev_extralibs="-lXv -lX11 -lXext"
+xv_outdev_deps="xlib"
 
 # protocols
 async_protocol_deps="threads"
@@ -5804,7 +5803,7 @@ check_func_headers windows.h Sleep
 check_func_headers windows.h VirtualAlloc
 check_func_headers glob.h glob
 enabled xlib &&
-    check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
+    check_lib xlib "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
 
 check_header direct.h
 check_header dirent.h