- Prefer linking against shared libvmaf (since 1.5.1)

--- CMakeLists.txt.orig	2020-02-26 23:23:16 UTC
+++ CMakeLists.txt
@@ -424,7 +424,7 @@ if(CONFIG_AV1_ENCODER)
               ${AOM_ENCODER_TOOL_TARGETS})
 
   if(CONFIG_TUNE_VMAF)
-    find_library(VMAF libvmaf.a vmaf)
+    find_library(VMAF vmaf)
     if(NOT VMAF)
       message(FATAL_ERROR "VMAF library not found.")
     endif()