diff --git a/indra/cmake/Variables.cmake b/indra/cmake/Variables.cmake
index 4cbf7aa0430ba27534e8f50c20cb3d61c608bc9e..dd177ef222b6c2b4ba3715aeb6a969ee4157330c 100644
--- a/indra/cmake/Variables.cmake
+++ b/indra/cmake/Variables.cmake
@@ -100,9 +100,9 @@ if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
   set(DARWIN 1)
   
   # To support a different SDK update these Xcode settings:
-  set(CMAKE_OSX_DEPLOYMENT_TARGET 10.5)
-  set(CMAKE_OSX_SYSROOT /Developer/SDKs/MacOSX10.5.sdk)
-  set(CMAKE_XCODE_ATTRIBUTE_GCC_VERSION "4.0")
+  set(CMAKE_OSX_DEPLOYMENT_TARGET 10.6)
+  set(CMAKE_OSX_SYSROOT macosx10.6)
+  set(CMAKE_XCODE_ATTRIBUTE_GCC_VERSION "com.apple.compilers.llvmgcc42")
   set(CMAKE_XCODE_ATTRIBUTE_DEBUG_INFORMATION_FORMAT dwarf-with-dsym)
 
   # NOTE: To attempt an i386/PPC Universal build, add this on the configure line: