do not define CVAPI_EXPORTS when OpenCV is built statically (thanks to Mika Fischer for the patch)

OpenCVModule.cmake

@@ -2,7 +2,9 @@
 macro(define_opencv_module name)
     
     project(opencv_${name})
-    add_definitions(-DCVAPI_EXPORTS)
+    if (OPENCV_BUILD_SHARED_LIB) 
+        add_definitions(-DCVAPI_EXPORTS) 
+    endif()
 
     include_directories("${CMAKE_CURRENT_SOURCE_DIR}/include"
                         "${CMAKE_CURRENT_SOURCE_DIR}/src"

modules/highgui/CMakeLists.txt

@@ -224,7 +224,9 @@ set(lib_srcs ${highgui_srcs} ${grfmt_srcs})
 # ----------------------------------------------------------------------------------
 set(the_target "opencv_highgui")
 
-add_definitions(-DHIGHGUI_EXPORTS -DCVAPI_EXPORTS)
+if (OPENCV_BUILD_SHARED_LIB) 
+    add_definitions(-DHIGHGUI_EXPORTS -DCVAPI_EXPORTS)
+endif()
 
 include_directories("${CMAKE_CURRENT_SOURCE_DIR}/include"
 					"${CMAKE_CURRENT_SOURCE_DIR}/../core/include"