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diff --git a/Modules/Compiler/XL.cmake b/Modules/Compiler/XL.cmake
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+
+#=============================================================================
+# Copyright 2002-2011 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+# This module is shared by multiple languages; use include blocker.
+if(__COMPILER_XL)
+  return()
+endif()
+set(__COMPILER_XL 1)
+
+# Find the CreateExportList program that comes with this toolchain.
+find_program(CMAKE_XL_CreateExportList
+  NAMES CreateExportList
+  DOC "IBM XL CreateExportList tool"
+  )
+
+macro(__compiler_xl lang)
+  # Feature flags.
+  set(CMAKE_${lang}_VERBOSE_FLAG "-V")
+
+  set(CMAKE_${lang}_FLAGS_DEBUG_INIT "-g")
+  set(CMAKE_${lang}_FLAGS_RELEASE_INIT "-O")
+  set(CMAKE_${lang}_FLAGS_MINSIZEREL_INIT "-O")
+  set(CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT "-g")
+  set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>")
+  set(CMAKE_${lang}_CREATE_ASSEMBLY_SOURCE     "<CMAKE_${lang}_COMPILER> <DEFINES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>")
+
+  # CMAKE_XL_CreateExportList is part of the AIX XL compilers but not the linux ones.
+  # If we found the tool, we'll use it to create exports, otherwise stick with the regular
+  # create shared library compile line.
+  if (CMAKE_XL_CreateExportList)
+    # The compiler front-end passes all object files, archive files, and shared
+    # library files named on the command line to CreateExportList to create a
+    # list of all symbols to be exported from the shared library.  This causes
+    # all archive members to be copied into the shared library whether they are
+    # needed or not.  Instead we run the tool ourselves to pass only the object
+    # files so that we export only the symbols actually provided by the sources.
+    set(CMAKE_${lang}_CREATE_SHARED_LIBRARY
+      "${CMAKE_XL_CreateExportList} <OBJECT_DIR>/objects.exp <OBJECTS>"
+      "<CMAKE_${lang}_COMPILER> <CMAKE_SHARED_LIBRARY_${lang}_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS> -Wl,-bE:<OBJECT_DIR>/objects.exp <SONAME_FLAG><TARGET_SONAME> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>"
+      )
+  endif()
+endmacro()