diff --git a/examples/osgsimpleviewerSDL/CMakeLists.txt b/examples/osgsimpleviewerSDL/CMakeLists.txt
index f3bbb2bf1..9510bf456 100644
--- a/examples/osgsimpleviewerSDL/CMakeLists.txt
+++ b/examples/osgsimpleviewerSDL/CMakeLists.txt
@@ -1,4 +1,18 @@
-SET(TARGET_SRC osgsimpleviewerSDL.cpp )
+IF("${SDL_LIBRARY}" MATCHES "SDLmain")
+       # Found a precompiled SDLmain library.
+       SET(TARGET_SRC osgsimpleviewerSDL.cpp)
+ELSE("${SDL_LIBRARY}" MATCHES "SDLmain")
+       # No SDLmain has been found.
+       # Depending on platform, code may need to be provided for SDLmain.
+       IF(APPLE)
+               SET(TARGET_SRC osgsimpleviewerSDL.cpp SDLMainForMacOSX.m SDLMainForMacOSX.h)
+       ELSE(APPLE)
+               # Unhandled case. No libsdlmain has been found and no code substitute.
+               # Depending on platform (or SDL version),
+               # this may or may not link successfully.
+               SET(TARGET_SRC osgsimpleviewerSDL.cpp)
+       ENDIF(APPLE)
+ENDIF("${SDL_LIBRARY}" MATCHES "SDLmain")
 
 SET(TARGET_EXTERNAL_LIBRARIES ${SDL_LIBRARY} )
 
@@ -6,3 +20,4 @@ INCLUDE_DIRECTORIES(${SDL_INCLUDE_DIR} )
 
 #### end var setup  ###
 SETUP_EXAMPLE(osgsimpleviewerSDL)
+