mirror of
https://github.com/ceres-solver/ceres-solver.git
synced 2026-08-30 00:50:37 +08:00
Alex Stewart
6414bd0279
- On at least some compilers, -std=c++11 is required in order to compile against std::shared_ptr & std::unordered_map, which resulted in our checks failing to find them and using the TR1 versions instead, which causes conflicts for users using C++11. - Now, if the compiler supports it and the user enables the CXX11 option, we explicitly enable C++11 before searching for shared_ptr & unordered_map, which means we should always find the C++11 versions if they are available. - As use of CXX11 results in a version of Ceres that must be used with -std=c++11 for GCC & Clang, we roll this into the Ceres target when the version of CMake supports this, otherwise we warn the user they will have to do this themselves. - CXX11 is OFF by default, to ensure that the behaviour of Ceres is unchanged from before. Change-Id: I157ea7a4fadc6bc02da176b8e771f1f327ccaf78
95 lines
4.7 KiB
CMake
95 lines
4.7 KiB
CMake
# Ceres Solver - A fast non-linear least squares minimizer
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# Copyright 2015 Google Inc. All rights reserved.
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# http://ceres-solver.org/
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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# * Neither the name of Google Inc. nor the names of its contributors may be
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# used to endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# Author: alexs.mac@gmail.com (Alex Stewart)
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#
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# FindUnorderedMap.cmake - Find unordered_map header and namespace.
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#
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# This module defines the following variables:
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#
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# UNORDERED_MAP_FOUND: TRUE if unordered_map is found.
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# HAVE_UNORDERED_MAP_IN_STD_NAMESPACE: Use <unordered_map> & std.
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# HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE: Use <unordered_map> & std::tr1.
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# HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE: <tr1/unordered_map> & std::tr1.
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MACRO(FIND_UNORDERED_MAP)
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# To support CXX11 option, clear the results of all check_xxx() functions
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# s/t we always perform the checks each time, otherwise CMake fails to
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# detect that the tests should be performed again after CXX11 is toggled.
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UNSET(HAVE_STD_UNORDERED_MAP_HEADER CACHE)
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UNSET(HAVE_UNORDERED_MAP_IN_STD_NAMESPACE CACHE)
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UNSET(HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE CACHE)
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UNSET(HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE CACHE)
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SET(UNORDERED_MAP_FOUND FALSE)
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INCLUDE(CheckIncludeFileCXX)
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CHECK_INCLUDE_FILE_CXX(unordered_map HAVE_STD_UNORDERED_MAP_HEADER)
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IF (HAVE_STD_UNORDERED_MAP_HEADER)
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# Finding the unordered_map header doesn't mean that unordered_map
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# is in std namespace.
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#
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# In particular, MSVC 2008 has unordered_map declared in std::tr1.
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# In order to support this, we do an extra check to see which
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# namespace should be used.
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INCLUDE(CheckCXXSourceCompiles)
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CHECK_CXX_SOURCE_COMPILES("#include <unordered_map>
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int main() {
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std::unordered_map<int, int> map;
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return 0;
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}"
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HAVE_UNORDERED_MAP_IN_STD_NAMESPACE)
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IF (HAVE_UNORDERED_MAP_IN_STD_NAMESPACE)
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SET(UNORDERED_MAP_FOUND TRUE)
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MESSAGE("-- Found unordered_map/set in std namespace.")
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ELSE (HAVE_UNORDERED_MAP_IN_STD_NAMESPACE)
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CHECK_CXX_SOURCE_COMPILES("#include <unordered_map>
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int main() {
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std::tr1::unordered_map<int, int> map;
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return 0;
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}"
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HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE)
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IF (HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE)
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SET(UNORDERED_MAP_FOUND TRUE)
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MESSAGE("-- Found unordered_map/set in std::tr1 namespace.")
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ELSE (HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE)
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MESSAGE("-- Found <unordered_map> but cannot find either "
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"std::unordered_map or std::tr1::unordered_map.")
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ENDIF (HAVE_UNORDERED_MAP_IN_TR1_NAMESPACE)
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ENDIF (HAVE_UNORDERED_MAP_IN_STD_NAMESPACE)
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ELSE (HAVE_STD_UNORDERED_MAP_HEADER)
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CHECK_INCLUDE_FILE_CXX("tr1/unordered_map"
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HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE)
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IF (HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE)
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SET(UNORDERED_MAP_FOUND TRUE)
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MESSAGE("-- Found tr1/unordered_map/set in std::tr1 namespace.")
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ELSE (HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE)
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MESSAGE("-- Unable to find <unordered_map> or <tr1/unordered_map>.")
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ENDIF (HAVE_TR1_UNORDERED_MAP_IN_TR1_NAMESPACE)
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ENDIF (HAVE_STD_UNORDERED_MAP_HEADER)
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ENDMACRO(FIND_UNORDERED_MAP)
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