update CMakeList.txt

CMakeLists.txt

@@ -197,6 +197,7 @@ OCV_OPTION(BUILD_JASPER             "Build libjasper from source"        WIN32 O
 OCV_OPTION(BUILD_JPEG               "Build libjpeg from source"          WIN32 OR ANDROID OR APPLE)
 OCV_OPTION(BUILD_PNG                "Build libpng from source"           WIN32 OR ANDROID OR APPLE)
 OCV_OPTION(BUILD_OPENEXR            "Build openexr from source"          (WIN32 OR ANDROID OR APPLE) AND NOT WINRT)
+OCV_OPTION(BUILD_WEBP               "Build WebP from source"             (WIN32 OR ANDROID OR APPLE) AND NOT WINRT)
 OCV_OPTION(BUILD_TBB                "Download and build TBB from source" ANDROID )
 OCV_OPTION(BUILD_IPP_IW             "Build IPP IW from source"           NOT MINGW IF (X86_64 OR X86) AND NOT WINRT )
 OCV_OPTION(BUILD_ITT                "Build Intel ITT from source"        NOT MINGW IF (X86_64 OR X86) AND NOT WINRT AND NOT APPLE_FRAMEWORK )

cmake/OpenCVFindWebP.cmake

@@ -23,7 +23,7 @@ else()
     FIND_LIBRARY(WEBP_LIBRARY NAMES webp)
     MARK_AS_ADVANCED(WEBP_LIBRARY)
 
-    # handle the QUIETLY and REQUIRED arguments and set WEBFOUND_FOUND to TRUE if
+    # handle the QUIETLY and REQUIRED arguments and set WEBP_FOUND to TRUE if
     # all listed variables are TRUE
     INCLUDE(${CMAKE_ROOT}/Modules/FindPackageHandleStandardArgs.cmake)
     FIND_PACKAGE_HANDLE_STANDARD_ARGS(WebP DEFAULT_MSG WEBP_LIBRARY WEBP_INCLUDE_DIR)

modules/highgui/CMakeLists.txt

@@ -20,6 +20,10 @@ if(APPLE)
   list(APPEND HIGHGUI_LIBRARIES ${ZLIB_LIBRARIES})
 endif()
 
+if(HAVE_WEBP)
+  add_definitions(-DHAVE_WEBP)
+endif()
+
 set(highgui_hdrs
     ${CMAKE_CURRENT_LIST_DIR}/src/precomp.hpp
     )