mirror of
https://github.com/ceres-solver/ceres-solver.git
synced 2026-08-29 16:40:38 +08:00
Alex Stewart
a80b8cfeac
- Use cmake_dependent_option() for all threading models and encode their respective mutual exclusivity in the dependent-option s/t the job of ensuring mutual exclusivity is performed by CMake. - Use of cmake_dependent_option() has the downside that options are removed from the GUI if their requirements for availability are not met. So if CXX11 is OFF, then neither TBB nor CXX11_THREADS will even appear as options (they will be undefined, assumed OFF). - Perform checks for availability of C++11 if CXX11 is enabled prior to testing other options to handle dependence of TBB & CXX11_THREADS on CXX11 actually being present. - Add check for availability of C++11-specific math functions used in jet.h before reporting C++11 as found. - Add check for <atomic> before allowing TBB or CXX11_THREADS, as both options require it and it may not always be available even if the other required C++11 components are. Change-Id: Ife8cd182aeb1978539ce2c9966910ae59ebd9177
59 lines
2.8 KiB
CMake
59 lines
2.8 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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# FindCXX11MathFunctions.cmake - Find C++11 math functions.
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#
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# This module defines the following variables:
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#
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# CXX11_MATH_FUNCTIONS_FOUND: TRUE if C++11 math functions are found.
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macro(find_cxx11_math_functions)
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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(CXX11_MATH_FUNCTIONS_FOUND CACHE)
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# Verify that all C++11-specific math functions used by jet.h exist.
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check_cxx_source_compiles("#include <cmath>
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#include <cstddef>
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static constexpr size_t kMaxAlignBytes = alignof(std::max_align_t);
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int main() {
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std::cbrt(1.0);
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std::exp2(1.0);
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std::log2(1.0);
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std::hypot(1.0, 1.0);
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std::fmax(1.0, 1.0);
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std::fmin(1.0, 1.0);
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return 0;
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}"
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CXX11_MATH_FUNCTIONS_FOUND)
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endmacro()
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