build: move option for viewer to the other options.

CMakeLists.txt

@@ -134,6 +134,12 @@ OPTION ( ASSIMP_IGNORE_GIT_HASH
    OFF
 )
 
+IF ( WIN32 )
+    OPTION ( ASSIMP_BUILD_ASSIMP_VIEW 
+      "If the Assimp view tool is built. (requires DirectX)" 
+      OFF )
+ENDIF()
+
 IF (IOS AND NOT ASSIMP_HUNTER_ENABLED)
   IF (NOT CMAKE_BUILD_TYPE)
     SET(CMAKE_BUILD_TYPE "Release")
@@ -512,19 +518,19 @@ ENDIF()
 SET ( ASSIMP_BUILD_ARCHITECTURE "" CACHE STRING
   "describe the current architecture."
 )
-IF    ( ASSIMP_BUILD_ARCHITECTURE STREQUAL "")
-ELSE  ()
+IF( ASSIMP_BUILD_ARCHITECTURE STREQUAL "")
+ELSE()
   ADD_DEFINITIONS ( -D'ASSIMP_BUILD_ARCHITECTURE="${ASSIMP_BUILD_ARCHITECTURE}"' )
-ENDIF ()
+ENDIF())
 
 # ${CMAKE_GENERATOR}
 SET ( ASSIMP_BUILD_COMPILER "" CACHE STRING
   "describe the current compiler."
 )
-IF    ( ASSIMP_BUILD_COMPILER STREQUAL "")
-ELSE  ()
+IF( ASSIMP_BUILD_COMPILER STREQUAL "")
+ELSE()
   ADD_DEFINITIONS ( -D'ASSIMP_BUILD_COMPILER="${ASSIMP_BUILD_COMPILER}"' )
-ENDIF ()
+ENDIF()
 
 MARK_AS_ADVANCED ( ASSIMP_BUILD_ARCHITECTURE ASSIMP_BUILD_COMPILER )