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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)