Merge pull request #4134 from alalek:fix_get_target_property

cmake/OpenCVUtils.cmake

@@ -795,10 +795,14 @@ macro(ocv_get_all_libs _modules _extra _3rdparty)
   set(${_extra} "")
   set(${_3rdparty} "")
   foreach(m ${OPENCV_MODULES_PUBLIC})
+    if(TARGET ${m})
       get_target_property(deps ${m} INTERFACE_LINK_LIBRARIES)
       if(NOT deps)
         set(deps "")
       endif()
+    else()
+      set(deps "")
+    endif()
     list(INSERT ${_modules} 0 ${deps} ${m})
     foreach (dep ${deps} ${OPENCV_LINKER_LIBS})
       if (NOT DEFINED OPENCV_MODULE_${dep}_LOCATION)