Support building shared libraries on WINCE.

platforms/wince/arm-wince-headless-overrides.cmake

@@ -3,10 +3,10 @@ if(WINCE)
   # Try_Compile succeed and therefore also C/C++ ABI Detetection work
   # https://gitlab.kitware.com/cmake/cmake/blob/master/Modules/Platform/Windows-
   # MSVC.cmake
-  set(CMAKE_C_STANDARD_LIBRARIES_INIT "coredll.lib")
+  set(CMAKE_C_STANDARD_LIBRARIES_INIT "coredll.lib oldnames.lib")
   set(CMAKE_CXX_STANDARD_LIBRARIES_INIT ${CMAKE_C_STANDARD_LIBRARIES_INIT})
   foreach(ID EXE SHARED MODULE)
     string(APPEND CMAKE_${ID}_LINKER_FLAGS_INIT
-           " /NODEFAULTLIB:libc.lib /NODEFAULTLIB:oldnames.lib")
+           " /NODEFAULTLIB:libc.lib")
   endforeach()
 endif()

platforms/wince/readme.md

@@ -57,6 +57,14 @@ For headless WEC2013, this configuration may not be limited to but is known to w
 -DWITH_TIFF=OFF `
 ```
 
+## Configuring to build as shared
+Building OpenCV as shared libraries is as easy as appending
+```
+-DBUILD_SHARED_LIBS=ON `
+-DBUILD_ZLIB=ON
+```
+to the build configuration.
+
 ## Building
 You are required to build using Unicode:
 `cmake --build . -- /p:CharacterSet=Unicode`