--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cmake_modules/CMakeSystemSpecificInformation.cmake	Thu Apr 21 11:54:21 2016 -0400
@@ -0,0 +1,123 @@
+# XXX Emscripten:
+# This file is copied as-is from the CMake source tree. Due to how CMake
+# platform toolchain files work, we must have a copy of this file located
+# relative to Emscripten platform toolchain file, or file inclusion order
+# in cmGlobalGenerator::EnableLanguage will not find Emscripten.cmake
+# toolchain file, and as a result, it is not possible to set the default
+# compilation output suffix to .js, and as a consequence the script
+# check_function_exists() will not function properly (it will try to
+# build to wrong file suffix)
+
+# CMake - Cross Platform Makefile Generator
+# Copyright 2000-2014 Kitware, Inc.
+# Copyright 2000-2011 Insight Software Consortium
+# All rights reserved.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+
+# * Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+
+# * Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+
+# * Neither the names of Kitware, Inc., the Insight Software Consortium,
+#   nor the names of their contributors may be used to endorse or promote
+#   products derived from this software without specific prior written
+#   permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# ------------------------------------------------------------------------------
+
+# The above copyright and license notice applies to distributions of
+# CMake in source and binary form.  Some source files contain additional
+# notices of original copyright by their contributors; see each source
+# for details.  Third-party software packages supplied with CMake under
+# compatible licenses provide their own copyright notices documented in
+# corresponding subdirectories.
+
+# ------------------------------------------------------------------------------
+
+# CMake was initially developed by Kitware with the following sponsorship:
+
+#  * National Library of Medicine at the National Institutes of Health
+#    as part of the Insight Segmentation and Registration Toolkit (ITK).
+
+#  * US National Labs (Los Alamos, Livermore, Sandia) ASC Parallel
+#    Visualization Initiative.
+
+#  * National Alliance for Medical Image Computing (NAMIC) is funded by the
+#    National Institutes of Health through the NIH Roadmap for Medical Research,
+#    Grant U54 EB005149.
+
+#  * Kitware, Inc.
+
+# This file is included by cmGlobalGenerator::EnableLanguage.
+# It is included after the compiler has been determined, so
+# we know things like the compiler name and if the compiler is gnu.
+
+# before cmake 2.6 these variables were set in cmMakefile.cxx. This is still
+# done to keep scripts and custom language and compiler modules working.
+# But they are reset here and set again in the platform files for the target
+# platform, so they can be used for testing the target platform instead
+# of testing the host platform.
+set(APPLE  )
+set(UNIX   )
+set(CYGWIN )
+set(WIN32  )
+
+
+# include Generic system information
+include(CMakeGenericSystem)
+
+# 2. now include SystemName.cmake file to set the system specific information
+set(CMAKE_SYSTEM_INFO_FILE Platform/${CMAKE_SYSTEM_NAME})
+
+include(${CMAKE_SYSTEM_INFO_FILE} OPTIONAL RESULT_VARIABLE _INCLUDED_SYSTEM_INFO_FILE)
+
+if(NOT _INCLUDED_SYSTEM_INFO_FILE)
+  message("System is unknown to cmake, create:\n${CMAKE_SYSTEM_INFO_FILE}"
+          " to use this system, please send your config file to "
+          "cmake@www.cmake.org so it can be added to cmake")
+  if(EXISTS ${CMAKE_BINARY_DIR}/CMakeCache.txt)
+    configure_file(${CMAKE_BINARY_DIR}/CMakeCache.txt
+                   ${CMAKE_BINARY_DIR}/CopyOfCMakeCache.txt COPYONLY)
+    message("Your CMakeCache.txt file was copied to CopyOfCMakeCache.txt. "
+            "Please send that file to cmake@www.cmake.org.")
+   endif()
+endif()
+
+
+# optionally include a file which can do extra-generator specific things, e.g.
+# CMakeFindEclipseCDT4.cmake asks gcc for the system include dirs for the Eclipse CDT4 generator
+if(CMAKE_EXTRA_GENERATOR)
+  string(REPLACE " " "" _CMAKE_EXTRA_GENERATOR_NO_SPACES ${CMAKE_EXTRA_GENERATOR} )
+  include("CMakeFind${_CMAKE_EXTRA_GENERATOR_NO_SPACES}" OPTIONAL)
+endif()
+
+
+# for most systems a module is the same as a shared library
+# so unless the variable CMAKE_MODULE_EXISTS is set just
+# copy the values from the LIBRARY variables
+# this has to be done after the system information has been loaded
+if(NOT CMAKE_MODULE_EXISTS)
+  set(CMAKE_SHARED_MODULE_PREFIX "${CMAKE_SHARED_LIBRARY_PREFIX}")
+  set(CMAKE_SHARED_MODULE_SUFFIX "${CMAKE_SHARED_LIBRARY_SUFFIX}")
+endif()
+
+
+set(CMAKE_SYSTEM_SPECIFIC_INFORMATION_LOADED 1)