Only try to find the Max SDK if it was requested (and show the option to try to build it always)

CMakeLists.txt

@@ -52,7 +52,6 @@ if(WIN32)
     find_package(Freetype)
 endif(WIN32)
 
-find_package(MaxSDK)          #TODO: Only find this if we are building PlasmaMax
 find_package(Bink)            #TODO: Find Bink, but don't require it if plPipeline isn't built...
                               #      Or better yet, just eliminate bink altogether
 include(PrecompiledHeader)    #Precompiled Header helper macros

Sources/Tools/CMakeLists.txt

@@ -8,7 +8,10 @@ if(PLASMA_BUILD_TOOLS)
 endif()
 
 # Max Stuff goes below here...
+option(3dsm_BUILD_PLUGIN "Do we want to build the 3ds Max plugin?" OFF)
 if(3dsm_BUILD_PLUGIN)
+    find_package(MaxSDK REQUIRED)
+    add_definitions(-DBUILDING_MAXPLUGIN)
     add_definitions(-DMAXPLUGINCODE)
 
     add_subdirectory(MaxComponent)

cmake/FindMaxSDK.cmake

@@ -87,9 +87,4 @@ if (3dsm_FOUND)
     if(NOT 3dsm_FIND_QUIETLY)
         message(STATUS "Found 3ds Max SDK: ${3dsm_PATH}")
     endif()
-    
-    option(3dsm_BUILD_PLUGIN "Do we want to build the 3ds Max plugin?" OFF)
-    if (3dsm_BUILD_PLUGIN)
-        add_definitions(-DBUILDING_MAXPLUGIN)
-    endif()
 endif()