Merge pull request #13189 from alalek:cmake_options_warnings_update

2018-11-17 00:36:15 +03:00
parent 43002c0c1d 53af811530
commit 954969dd74
1 changed files with 3 additions and 1 deletions
@@ -605,7 +605,9 @@ macro(OCV_OPTION variable description value)
      option(${variable} "${description}" ${__value})
    endif()
  else()
-    if(DEFINED ${variable} AND NOT OPENCV_HIDE_WARNING_UNSUPPORTED_OPTION)
+    if(DEFINED ${variable} AND "${${variable}}"  # emit warnings about turned ON options only.
+        AND NOT (OPENCV_HIDE_WARNING_UNSUPPORTED_OPTION OR "$ENV{OPENCV_HIDE_WARNING_UNSUPPORTED_OPTION}")
+    )
      message(WARNING "Unexpected option: ${variable} (=${${variable}})\nCondition: IF (${__condition})")
    endif()
    if(OPENCV_UNSET_UNSUPPORTED_OPTION)