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							- # Ceres Solver - A fast non-linear least squares minimizer
 
- # Copyright 2015 Google Inc. All rights reserved.
 
- # http://ceres-solver.org/
 
- #
 
- # 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 name of Google Inc. nor the names of its 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 OWNER 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.
 
- #
 
- # Author: alexs.mac@gmail.com (Alex Stewart)
 
- #
 
- # FindUnorderedMap.cmake - Find unordered_map header and namespace.
 
- #
 
- # This module defines the following variables:
 
- #
 
- # UNORDERED_MAP_FOUND: TRUE if unordered_map is found.
 
- # HAVE_UNORDERED_MAP_IN_STD_NAMESPACE: Use <unordered_map> & std.
 
- # HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE: Use <unordered_map> & std::tr1.
 
- # HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE: <tr1/unordered_map> & std::tr1.
 
- macro(FIND_UNORDERED_MAP)
 
-   # To support CXX11 option, clear the results of all check_xxx() functions
 
-   # s/t we always perform the checks each time, otherwise CMake fails to
 
-   # detect that the tests should be performed again after CXX11 is toggled.
 
-   unset(HAVE_STD_UNORDERED_MAP_HEADER CACHE)
 
-   unset(HAVE_UNORDERED_MAP_IN_STD_NAMESPACE CACHE)
 
-   unset(HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE CACHE)
 
-   unset(HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE CACHE)
 
-   set(UNORDERED_MAP_FOUND FALSE)
 
-   include(CheckIncludeFileCXX)
 
-   check_include_file_cxx(unordered_map HAVE_STD_UNORDERED_MAP_HEADER)
 
-   if (HAVE_STD_UNORDERED_MAP_HEADER)
 
-     # Finding the unordered_map header doesn't mean that unordered_map
 
-     # is in std namespace.
 
-     #
 
-     # In particular, MSVC 2008 has unordered_map declared in std::tr1.
 
-     # In order to support this, we do an extra check to see which
 
-     # namespace should be used.
 
-     include(CheckCXXSourceCompiles)
 
-     check_cxx_source_compiles("#include <unordered_map>
 
-                                int main() {
 
-                                  std::unordered_map<int, int> map;
 
-                                  return 0;
 
-                                }"
 
-                                HAVE_UNORDERED_MAP_IN_STD_NAMESPACE)
 
-     if (HAVE_UNORDERED_MAP_IN_STD_NAMESPACE)
 
-       set(UNORDERED_MAP_FOUND TRUE)
 
-       message("-- Found unordered_map/set in std namespace.")
 
-     else (HAVE_UNORDERED_MAP_IN_STD_NAMESPACE)
 
-       check_cxx_source_compiles("#include <unordered_map>
 
-                                  int main() {
 
-                                    std::tr1::unordered_map<int, int> map;
 
-                                    return 0;
 
-                                  }"
 
-                                  HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE)
 
-       if (HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE)
 
-         set(UNORDERED_MAP_FOUND TRUE)
 
-         message("-- Found unordered_map/set in std::tr1 namespace.")
 
-       else (HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE)
 
-         message("-- Found <unordered_map> but cannot find either "
 
-           "std::unordered_map or std::tr1::unordered_map.")
 
-       endif (HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE)
 
-     endif (HAVE_UNORDERED_MAP_IN_STD_NAMESPACE)
 
-   else (HAVE_STD_UNORDERED_MAP_HEADER)
 
-     check_include_file_cxx("tr1/unordered_map"
 
-       HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE)
 
-     if (HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE)
 
-       set(UNORDERED_MAP_FOUND TRUE)
 
-       message("-- Found tr1/unordered_map/set in std::tr1 namespace.")
 
-     else (HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE)
 
-       message("-- Unable to find <unordered_map> or <tr1/unordered_map>.")
 
-     endif (HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE)
 
-   endif (HAVE_STD_UNORDERED_MAP_HEADER)
 
- endmacro(FIND_UNORDERED_MAP)
 
 
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