diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9d93f3b..acf86ec 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,18 +10,26 @@ IF(NOT ITK_SOURCE_DIR)
   FIND_PACKAGE(ITK REQUIRED)
   LIST(APPEND CMAKE_MODULE_PATH ${ITK_CMAKE_DIR})
   INCLUDE(ITKModuleExternal)
+
+  OPTION(BUILD_EXAMPLES "Build the examples" OFF)
+  if(BUILD_EXAMPLES)
+    ADD_SUBDIRECTORY( examples )
+  ENDIF()
+
+  OPTION(BUILD_DOCUMENTATION "Generate documentation from LaTeX files, source code examples and result screenshots" OFF)
+  IF(BUILD_DOCUMENTATION)
+    ADD_SUBDIRECTORY( doc )
+  ENDIF()
 ELSE()
   itk_module_impl()
-ENDIF()
-
-CMAKE_DEPENDENT_OPTION(Module_${PCA}_BUILD_EXAMPLES "Build the examples" OFF "BUILD_EXAMPLES" OFF)
-if(Module_${PCA}_BUILD_EXAMPLES)
-  ADD_SUBDIRECTORY( examples )
-ENDIF()
 
+  CMAKE_DEPENDENT_OPTION(Module_${PCA}_BUILD_EXAMPLES "Build the examples" OFF "BUILD_EXAMPLES" OFF)
+  if(Module_${PCA}_BUILD_EXAMPLES)
+    ADD_SUBDIRECTORY( examples )
+  ENDIF()
 
-CMAKE_DEPENDENT_OPTION(Module_${PCA}_BUILD_DOCUMENTATION "Generate documentation from LaTeX files, source code examples and result screenshots" OFF
-	"BUILD_DOCUMENTATION" OFF)
-IF(Module_${PCA}_BUILD_DOCUMENTATION)
-  ADD_SUBDIRECTORY( doc )
+  CMAKE_DEPENDENT_OPTION(Module_${PCA}_BUILD_DOCUMENTATION "Generate documentation from LaTeX files, source code examples and result screenshots" OFF "BUILD_DOCUMENTATION" OFF)
+  IF(Module_${PCA}_BUILD_DOCUMENTATION)
+    ADD_SUBDIRECTORY( doc )
+  ENDIF()
 ENDIF()
diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index 528f6d4..5de0eee 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -1,16 +1,10 @@
-
-#######################
-#######################
-#
-#  Define Executables
-#
-#######################
-#######################
-
-FIND_PACKAGE(ITK REQUIRED COMPONENTS PrincipalComponentsAnalysis)
-
-include_directories( ${PrincipalComponentsAnalysis_SOURCE_DIR}/Source )
-
-ADD_EXECUTABLE(VectorKernelPCA VectorKernelPCA.cxx )
-TARGET_LINK_LIBRARIES(VectorKernelPCA ${ITK_LIBRARIES})
+if(NOT ITK_SOURCE_DIR)
+  find_package(ITK REQUIRED COMPONENTS PrincipalComponentsAnalysis)
+  include(${ITK_USE_FILE})
+else()
+  itk_module_impl()
+endif()
+
+ADD_EXECUTABLE(VectorKernelPCA VectorKernelPCA.cxx)
+TARGET_LINK_LIBRARIES(VectorKernelPCA ${ITK_LIBRARIES})