Merge pull request #6415 from mshabunin:fix-xcode-warnings-24

3rdparty/libjpeg/CMakeLists.txt

@@ -26,7 +26,7 @@ if(CMAKE_COMPILER_IS_GNUCXX)
 endif()
 
 ocv_warnings_disable(CMAKE_C_FLAGS -Wcast-align -Wshadow -Wunused)
-ocv_warnings_disable(CMAKE_C_FLAGS -Wunused-parameter) # clang
+ocv_warnings_disable(CMAKE_C_FLAGS -Wunused-parameter -Wshift-negative-value) # clang
 
 set_target_properties(${JPEG_LIBRARY}
   PROPERTIES OUTPUT_NAME ${JPEG_LIBRARY}

3rdparty/zlib/CMakeLists.txt

@@ -82,7 +82,7 @@ if(UNIX)
   endif()
 endif()
 
-ocv_warnings_disable(CMAKE_C_FLAGS -Wshorten-64-to-32 -Wattributes -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations)
+ocv_warnings_disable(CMAKE_C_FLAGS -Wshorten-64-to-32 -Wattributes -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wshift-negative-value)
 
 set_target_properties(${ZLIB_LIBRARY} PROPERTIES
         OUTPUT_NAME ${ZLIB_LIBRARY}