[vlc-devel] [PATCH 4/9] configure: add avcodec check for ffmpeg/libav versions

[ileoo at videolan.org]

From: Ilkka Ollakka <ileoo at videolan.org>

---
 configure.ac | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/configure.ac b/configure.ac
index 178b724..f92bbc4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2320,6 +2320,20 @@ AS_IF([test "${enable_avcodec}" != "no"], [
     CFLAGS="${CFLAGS} ${AVCODEC_CFLAGS}"
     AC_CHECK_HEADERS(libavcodec/avcodec.h)
     AC_CHECK_HEADERS(libavutil/avutil.h)
+    dnl We need >=57.16.0 from libav or >=57.37.100 from ffmpeg
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+            #include <libavcodec/avcodec.h>
+                #define LIBAVCODEC_VERSION_CHECK( a, b, c, d, e ) \
+                    ( (LIBAVCODEC_VERSION_MICRO <  100 && LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( a, b, c ) ) || \
+                      (LIBAVCODEC_VERSION_MICRO >= 100 && LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( a, d, e ) ) )
+                #if !LIBAVCODEC_VERSION_CHECK( 57, 16, 0, 37, 100)
+                #error libav or ffmpeg not new enough
+                #endif
+            ]],
+            [[
+            ]])],[have_avcodec="yes"],[
+                 AC_MSG_ERROR([Not new enough libav/ffmpeg. Pass --disable-avcodec to ignore this error.])
+            ])
     VLC_RESTORE_FLAGS
     have_avcodec="yes"
   ],[
-- 
2.6.6