--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -656,7 +656,7 @@ endif()
 ocv_cmake_hook(POST_CMAKE_BUILD_OPTIONS)
 
 # --- Python Support ---
-if(NOT IOS AND NOT XROS)
+if(WITH_PYTHON)
   include(cmake/OpenCVDetectPython.cmake)
 endif()
 
--- a/cmake/OpenCVCompilerOptions.cmake
+++ b/cmake/OpenCVCompilerOptions.cmake
@@ -307,7 +307,6 @@ if(MSVC)
   #endif()
 
   if(BUILD_WITH_DEBUG_INFO)
-    set(OPENCV_EXTRA_FLAGS_RELEASE "${OPENCV_EXTRA_FLAGS_RELEASE} /Zi")
     set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE} /debug")
     set(OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_SHARED_LINKER_FLAGS_RELEASE} /debug")
     set(OPENCV_EXTRA_MODULE_LINKER_FLAGS_RELEASE "${OPENCV_EXTRA_MODULE_LINKER_FLAGS_RELEASE} /debug")
--- a/cmake/OpenCVGenConfig.cmake
+++ b/cmake/OpenCVGenConfig.cmake
@@ -118,18 +118,18 @@ function(ocv_gen_config TMP_DIR NESTED_PATH ROOT_NAME)
   endif()
 endfunction()
 
-if((CMAKE_HOST_SYSTEM_NAME MATCHES "Linux" OR UNIX) AND NOT ANDROID)
+if(TRUE)
   ocv_gen_config("${CMAKE_BINARY_DIR}/unix-install" "" "")
 endif()
 
-if(ANDROID)
+if(FALSE)
   ocv_gen_config("${CMAKE_BINARY_DIR}/unix-install" "abi-${ANDROID_NDK_ABI_NAME}" "OpenCVConfig.root-ANDROID.cmake.in")
 endif()
 
 # --------------------------------------------------------------------------------------------
 #  Part 3/3: ${BIN_DIR}/win-install/OpenCVConfig.cmake  -> For use within binary installers/packages
 # --------------------------------------------------------------------------------------------
-if(WIN32)
+if(FALSE)
   if(CMAKE_HOST_SYSTEM_NAME MATCHES Windows AND NOT OPENCV_SKIP_CMAKE_ROOT_CONFIG)
     ocv_gen_config("${CMAKE_BINARY_DIR}/win-install"
                    "${OPENCV_INSTALL_BINARIES_PREFIX}${OPENCV_INSTALL_BINARIES_SUFFIX}"
--- a/data/CMakeLists.txt
+++ b/data/CMakeLists.txt
@@ -1,8 +1,6 @@
 file(GLOB HAAR_CASCADES haarcascades/*.xml)
 file(GLOB LBP_CASCADES lbpcascades/*.xml)
 
-install(FILES ${HAAR_CASCADES} DESTINATION ${OPENCV_OTHER_INSTALL_PATH}/haarcascades COMPONENT libs)
-install(FILES ${LBP_CASCADES}  DESTINATION ${OPENCV_OTHER_INSTALL_PATH}/lbpcascades  COMPONENT libs)
 
 if(INSTALL_TESTS AND OPENCV_TEST_DATA_PATH)
   install(DIRECTORY "${OPENCV_TEST_DATA_PATH}/" DESTINATION "${OPENCV_TEST_DATA_INSTALL_PATH}" COMPONENT "tests")