cmake: support ICC warnings

cmake/OpenCVUtils.cmake

@@ -302,6 +302,7 @@ macro(ocv_warnings_disable)
     set(_flag_vars "")
     set(_msvc_warnings "")
     set(_gxx_warnings "")
+    set(_icc_warnings "")
     foreach(arg ${ARGN})
       if(arg MATCHES "^CMAKE_")
         list(APPEND _flag_vars ${arg})
@@ -309,6 +310,8 @@ macro(ocv_warnings_disable)
         list(APPEND _msvc_warnings ${arg})
       elseif(arg MATCHES "^-W")
         list(APPEND _gxx_warnings ${arg})
+      elseif(arg MATCHES "^-wd" OR arg MATCHES "^-Qwd" OR arg MATCHES "^/Qwd")
+        list(APPEND _icc_warnings ${arg})
       endif()
     endforeach()
     if(MSVC AND _msvc_warnings AND _flag_vars)
@@ -331,9 +334,25 @@ macro(ocv_warnings_disable)
         endforeach()
       endforeach()
     endif()
+    if(CV_ICC AND _icc_warnings AND _flag_vars)
+      foreach(var ${_flag_vars})
+        foreach(warning ${_icc_warnings})
+          if(UNIX)
+            string(REPLACE "-Qwd" "-wd" warning "${warning}")
+          else()
+            string(REPLACE "-wd" "-Qwd" warning "${warning}")
+          endif()
+          ocv_check_flag_support(${var} "${warning}" _varname)
+          if(${_varname})
+            set(${var} "${${var}} ${warning}")
+          endif()
+        endforeach()
+      endforeach()
+    endif()
     unset(_flag_vars)
     unset(_msvc_warnings)
     unset(_gxx_warnings)
+    unset(_icc_warnings)
   endif(NOT ENABLE_NOISY_WARNINGS)
 endmacro()