package/tvheadend: revert minimum required ffmpeg version numbers

Fixes
http://autobuild.buildroot.net/results/e62/e62dd4dbdb4c92bc657936566e73388e76343903/
and many others

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/tvheadend/0002-ffmpeg-revert-minimum-required-version-numbers.patch

@@ -0,0 +1,51 @@
+From 78a7b7365a67fa2f5394c6b4ca39de01b00416dc Mon Sep 17 00:00:00 2001
+From: Bernd Kuhls <bernd.kuhls@t-online.de>
+Date: Sat, 2 Apr 2016 19:05:52 +0200
+Subject: [PATCH 1/1] ffmpeg: revert minimum required version numbers
+
+This commit reverts the minimum version numbers required by configure to
+the values before
+https://github.com/tvheadend/tvheadend/commit/1359effe28a0381b8c9cbd362d6e144fb87b00fc#diff-e2d5a00791bce9a01f99bc6fd613a39dL486
+in order to allow compilation with older versions of ffmpeg again.
+
+Please note that the previous version numbers of all ffmpeg libs, with
+the exception of libavfilter, are those of ffmpeg 2.0.7:
+https://ffmpeg.org/olddownload.html
+
+Therefore I synced the minimum version number required for libavfilter to
+3.79.101 and not to 4.0.0 as previous in tvheadend's configure script.
+
+Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
+[Patch sent upstream: https://github.com/tvheadend/tvheadend/pull/838]
+---
+ configure | 14 +++++++-------
+ 1 file changed, 7 insertions(+), 7 deletions(-)
+
+diff --git a/configure b/configure
+index be3d2e2..2ffd280 100755
+--- a/configure
++++ b/configure
+@@ -512,13 +512,13 @@ else
+   if enabled_or_auto libav; then
+     has_libav=true
+ 
+-    check_pkg libavfilter   ">=6.31.100"  || has_libav=false
+-    check_pkg libswresample ">=2.0.101"   || has_libav=false
+-    check_pkg libavresample ">=3.0.0"     || has_libav=false
+-    check_pkg libswscale    ">=4.0.100"   || has_libav=false
+-    check_pkg libavformat   ">=57.25.100" || has_libav=false
+-    check_pkg libavcodec    ">=57.24.102" || has_libav=false
+-    check_pkg libavutil     ">=55.17.103" || has_libav=false
++    check_pkg libavfilter   ">=3.79.101"  || has_libav=false
++    check_pkg libswresample ">=0.17.102"   || has_libav=false
++    check_pkg libavresample ">=1.1.0"     || has_libav=false
++    check_pkg libswscale    ">=2.3.100"   || has_libav=false
++    check_pkg libavformat   ">=55.12.100" || has_libav=false
++    check_pkg libavcodec    ">=55.18.102" || has_libav=false
++    check_pkg libavutil     ">=52.38.100" || has_libav=false
+ 
+     if $has_libav; then
+       enable libav
+-- 
+2.8.0.rc3
+