BUILD: Add option to disable build with vpx

CMakeLists.txt

@@ -32,6 +32,7 @@ option(ENABLE_VORBIS "Enable building with Vorbis support" ON)
 option(ENABLE_MAD "Enable building with MP3 support" ON)
 option(ENABLE_FAAD "Enable building with AAC support" ON)
 option(ENABLE_XVIDCORE "Enable building with H.263 support" ON)
+option(ENABLE_VPX "Enable building with VP8/VP9 support" ON)
 
 
 # -------------------------------------------------------------------------
@@ -317,6 +318,17 @@ if(ENABLE_XVIDCORE)
   endif()
 endif()
 
+if(ENABLE_VPX)
+  find_package(VPX)
+  if(VPX_FOUND)
+    add_definitions(-DENABLE_VPX)
+    include_directories(${VPX_INCLUDE_DIR})
+    list(APPEND XOREOS_LIBRARIES ${VPX_LIBRARY})
+  else()
+    set(ENABLE_VPX OFF)
+  endif()
+endif()
+
 find_package(LibLZMA REQUIRED)
 include_directories(${LIBLZMA_INCLUDE_DIR})
 list(APPEND XOREOS_LIBRARIES ${LIBLZMA_LIBRARY})
@@ -535,3 +547,4 @@ message(STATUS " libmad: ${ENABLE_MAD}")
 message(STATUS " libvorbis: ${ENABLE_VORBIS}")
 message(STATUS " libfaad: ${ENABLE_FAAD}")
 message(STATUS " xvidcore: ${ENABLE_XVIDCORE}")
+message(STATUS " libvpx: ${ENABLE_VPX}")