cmake: simplify test

fabiencastan · fabiencastan · commit 5a806fa213a3 · 2015-01-26T19:43:30.000+01:00
find_package already test for swresample/avresample, so just use the
output variables.
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
@@ -7,10 +7,12 @@ find_package(FFmpeg
 	COMPONENTS avcodec avformat avutil swscale swresample avresample)
 
 # Check if FFmpeg or libav dependency
-if(EXISTS "${FFMPEG_INCLUDE_DIR}/libavresample/avresample.h")
+if(avresample_VERSION)
 	add_definitions(-DAV_RESAMPLE_LIBRARY)
-else()
+elseif(swresample_VERSION)
 	add_definitions(-DFF_RESAMPLE_LIBRARY)
+else()
+        message(SEND_ERROR, "Need 'swresample' or 'avresample'.")
 endif()
 
 # Include AvTranscoder and FFmpeg
