From Ulrich Hertlein, "Attached; here's a summary of the changes:

- CMakeLists.txt
-- don't look for GL when compiling for iOS (device or simulator), look for OGLES instead
-- use architecture i386 for simulator
-- removed iphoneos-version-min for simulator

- examples/osgviewerIPhone/CMakeLists.txt
-- added build dependencies for osgdb_osg, osgdb_freetype, osgdb_imageio
-- added framework QuartzCore link dependency

- src/osgDB/CMakeLists.txt
-- don't link against Carbon on iOS (device or simulator)

- src/osgPlugins/freetype/CMakeLists.txt
-- don't link against OpenGL on iOS device or simulator

- src/osgViewer/CMakeLists.txt
-- link against OpenGLES on iOS (device or simulator)

- src/osgPlugins/imageio/CMakeLists.txt
-- compile ReaderWriterImageIO_IOS.cpp as Objective-C++

"

CMakeLists.txt

@@ -138,10 +138,6 @@ IF (OSG_MAINTAINER)
 ENDIF(OSG_MAINTAINER)
 
 
-# Find OpenGL
-FIND_PACKAGE(OpenGL)
-
-
 IF(APPLE)
     # Trying to get CMake to generate an XCode IPhone project, current efforts are to get iphoneos sdk 3.1 working
     # Added option which needs manually setting to select the IPhone SDK for building. We can only have one of the below
@@ -169,17 +165,22 @@ IF(APPLE)
             SET (IPHONE_DEVROOT "/Developer/Platforms/iPhoneSimulator.platform/Developer")
             SET (IPHONE_SDKROOT "${IPHONE_DEVROOT}/SDKs/iPhoneSimulator${IPHONE_SDKVER}.sdk")
         ENDIF()
-    ENDIF ()
 
-    FIND_LIBRARY(CARBON_LIBRARY Carbon)
-    FIND_LIBRARY(COCOA_LIBRARY Cocoa)
-
-   IF(OSG_BUILD_PLATFORM_IPHONE)
+        # Apple iOS: Find OpenGLES
         FIND_LIBRARY(OPENGLES_LIBRARY OpenGLES)
-    ENDIF()
+    ELSE ()
+        FIND_LIBRARY(CARBON_LIBRARY Carbon)
+        FIND_LIBRARY(COCOA_LIBRARY Cocoa)
+
+        # Apple OS X: Find OpenGL
+        FIND_PACKAGE(OpenGL)
+    ENDIF ()
 
     OPTION(OSG_COMPILE_FRAMEWORKS "compile frameworks instead of dylibs (experimental)" OFF)
     SET(OSG_COMPILE_FRAMEWORKS_INSTALL_NAME_DIR "@executable_path/../Frameworks" CACHE STRING "install name dir for compiled frameworks")
+ELSE()
+    # Non-Apple: Find OpenGL
+    FIND_PACKAGE(OpenGL)
 ENDIF()
 
 IF(UNIX)
@@ -708,8 +709,8 @@ IF(APPLE)
             SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -miphoneos-version-min=3.1 -mno-thumb -arch armv6 -pipe -no-cpp-precomp" CACHE STRING "Flags used by the compiler during all build types." FORCE)
         ELSE()
             #simulator uses i386 architectures
-            SET(CMAKE_OSX_ARCHITECTURES "i386;x86_64" CACHE STRING "Build architectures for iOS Simulator" FORCE)
-            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -miphoneos-version-min=3.1 -mno-thumb -arch i386 -pipe -no-cpp-precomp" CACHE STRING "Flags used by the compiler during all build types." FORCE)
+            SET(CMAKE_OSX_ARCHITECTURES "i386" CACHE STRING "Build architectures for iOS Simulator" FORCE)
+            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mno-thumb -arch i386 -pipe -no-cpp-precomp" CACHE STRING "Flags used by the compiler during all build types." FORCE)
         ENDIF()
 
         #here we set the specific iphone sdk version. We can only set either device or simulator sdk. So if you want both you currently have to have two seperate projects
@@ -720,7 +721,7 @@ IF(APPLE)
 
         #use the IPhone windowing system
         SET(OSG_WINDOWING_SYSTEM "IOS" CACHE STRING "Forced IPhone windowing system on iOS"  FORCE)
-        SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "imageio " CACHE STRING "Forced imageio default image plugin for iOS" FORCE)
+        SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "imageio" CACHE STRING "Forced imageio default image plugin for iOS" FORCE)
 
         #I think this or similar will be required for IPhone apps
         OPTION(OSG_BUILD_APPLICATION_BUNDLES "Enable the building of applications and examples as OSX Bundles" ON)

examples/osgviewerIPhone/CMakeLists.txt

@@ -6,12 +6,12 @@ SET(TARGET_SRC
     osgIPhoneViewer-Info.plist
 )
 
+SET(TARGET_ADDED_LIBRARIES osgdb_osg osgdb_freetype osgdb_imageio)
+
 #backup setting
 SET(TMP_OSG_BUILD_APPLICATION_BUNDLES {$OSG_BUILD_APPLICATION_BUNDLES})
 SET(OSG_BUILD_APPLICATION_BUNDLES TRUE)
 SETUP_EXAMPLE(osgViewerIPhone)
 #restore setting
 SET(OSG_BUILD_APPLICATION_BUNDLES {$TMP_OSG_BUILD_APPLICATION_BUNDLES})
-
-SET(CMAKE_EXE_LINKER_FLAGS "-framework Foundation -framework OpenGLES  -framework UIKit")
-
+SET(CMAKE_EXE_LINKER_FLAGS "-framework QuartzCore -framework Foundation -framework OpenGLES  -framework UIKit")

src/osgDB/CMakeLists.txt

@@ -121,8 +121,10 @@ ADD_LIBRARY(${LIB_NAME}
 )
 
 IF(APPLE)
-    # Needs CoreFoundation calls and a Carbon function
-    SET(OSGDB_PLATFORM_SPECIFIC_LIBRARIES ${CARBON_LIBRARY})
+    IF(NOT OSG_BUILD_PLATFORM_IPHONE AND NOT OSG_BUILD_PLATFORM_IPHONE_SIMULATOR)
+        # Needs CoreFoundation calls and a Carbon function
+        SET(OSGDB_PLATFORM_SPECIFIC_LIBRARIES ${CARBON_LIBRARY})
+    ENDIF()
  
     SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "quicktime" CACHE STRING "standard image plugin for os x, options are quicktime, imageio")
 

src/osgPlugins/freetype/CMakeLists.txt

@@ -5,7 +5,9 @@ ENDIF()
 INCLUDE_DIRECTORIES(${FREETYPE_INCLUDE_DIRS} )
 
 IF(APPLE)
-  SET(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-dylib_file,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib")
+    IF(NOT OSG_BUILD_PLATFORM_IPHONE AND NOT OSG_BUILD_PLATFORM_IPHONE_SIMULATOR)
+        SET(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} -Wl,-dylib_file,/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib:/System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGL.dylib")
+    ENDIF()
 ENDIF()
 
 SET(TARGET_SRC

src/osgPlugins/imageio/CMakeLists.txt

@@ -4,6 +4,15 @@ ELSE()
     SET(TARGET_SRC ReaderWriterImageIO.cpp )
 ENDIF()
 
+IF (APPLE) 
+   IF(OSG_BUILD_PLATFORM_IPHONE OR OSG_BUILD_PLATFORM_IPHONE_SIMULATOR)
+     # compile FileUtils.cpp as objective-c++
+     SET_SOURCE_FILES_PROPERTIES(ReaderWriterImageIO_IOS.cpp
+       PROPERTIES COMPILE_FLAGS "-x objective-c++"
+     )
+   ENDIF()
+ENDIF()
+
 SET(TARGET_ADDED_LIBRARIES)
 SET(TARGET_LIBRARIES_VARS IMAGEIO_LIBRARY )
 SET(TARGET_EXTERNAL_LIBRARIES "/System/Library/Frameworks/Accelerate.framework" )

src/osgViewer/CMakeLists.txt

@@ -195,7 +195,7 @@ ELSE()
         # X11 on Apple requires X11 library plus OpenGL linking hack on Leopard
         IF(APPLE)
             # hack for finding the iphone opengl es lib
-            IF(OSG_BUILD_PLATFORM_IOS)
+            IF(OSG_BUILD_PLATFORM_IPHONE OR OSG_BUILD_PLATFORM_IPHONE_SIMULATOR)
                 SET(OPENGL_INCLUDE_DIR ${IPHONE_SDKROOT}System/Library/Frameworks)
                 SET(OPENGL_LIBRARIES ${IPHONE_SDKROOT}System/Library/Frameworks/OpenGLES)
             ELSE()