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94 lines
4.8 KiB
94 lines
4.8 KiB
# Ceres Solver - A fast non-linear least squares minimizer
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# Copyright 2016 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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# Authors: alexs.mac@gmail.com (Alex Stewart)
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#
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# Conditionally add a value to the output list based on whether the specified
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# value is found in the input list.
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function(update_output_if_found INPUT_LIST_VAR OUTPUT_LIST_VAR ITEM_TO_FIND VAR_TO_COPY_IF_FOUND VAR_TO_COPY_IF_NOT_FOUND)
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list(FIND ${INPUT_LIST_VAR} "${ITEM_TO_FIND}" HAVE_ITEM)
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# list(FIND ..) returns -1 if the element was not in the list, but CMake
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# interprets if (VAR) to be true if VAR is any non-zero number, even
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# negative ones, hence we have to explicitly check for >= 0.
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if (HAVE_ITEM GREATER -1)
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list(APPEND ${OUTPUT_LIST_VAR} "${VAR_TO_COPY_IF_FOUND}")
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else()
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list(APPEND ${OUTPUT_LIST_VAR} "${VAR_TO_COPY_IF_NOT_FOUND}")
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endif()
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set(${OUTPUT_LIST_VAR} ${${OUTPUT_LIST_VAR}} PARENT_SCOPE)
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endfunction()
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# Helpers for update_output_if_found() to improve legibility when dealing with
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# USE_XXX & NO_XXX option types in ceres_compile_options_to_components().
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macro(add_to_output_if_found INPUT_LIST_VAR OUTPUT_LIST_VAR ITEM_TO_FIND VAR_TO_COPY_IF_FOUND)
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update_output_if_found(${INPUT_LIST_VAR}
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${OUTPUT_LIST_VAR}
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"${ITEM_TO_FIND}"
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"${VAR_TO_COPY_IF_FOUND}"
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"") # Copy nothing if not found.
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endmacro()
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macro(add_to_output_if_not_found INPUT_LIST_VAR OUTPUT_LIST_VAR ITEM_TO_FIND VAR_TO_COPY_IF_NOT_FOUND)
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update_output_if_found(${INPUT_LIST_VAR}
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${OUTPUT_LIST_VAR}
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"${ITEM_TO_FIND}"
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"" # Copy nothing if found
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"${VAR_TO_COPY_IF_NOT_FOUND}")
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endmacro()
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# Convert the Ceres compile options specified by: CURRENT_CERES_COMPILE_OPTIONS
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# into the correponding list of Ceres components (names), which may be used in:
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# find_package(Ceres COMPONENTS <XXX>).
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function(ceres_compile_options_to_components CURRENT_CERES_COMPILE_OPTIONS CERES_COMPONENTS_VAR)
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# To enable users to specify that they want *a* sparse linear algebra backend
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# without having to specify explicitly which one, for each sparse library we
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# add the 'meta-module': SparseLinearAlgebraLibrary in addition to their own
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# module name.
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add_to_output_if_found(CURRENT_CERES_COMPILE_OPTIONS ${CERES_COMPONENTS_VAR}
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CERES_USE_EIGEN_SPARSE "EigenSparse;SparseLinearAlgebraLibrary")
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add_to_output_if_not_found(CURRENT_CERES_COMPILE_OPTIONS ${CERES_COMPONENTS_VAR}
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CERES_NO_LAPACK "LAPACK")
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add_to_output_if_not_found(CURRENT_CERES_COMPILE_OPTIONS ${CERES_COMPONENTS_VAR}
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CERES_NO_SUITESPARSE "SuiteSparse;SparseLinearAlgebraLibrary")
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add_to_output_if_not_found(CURRENT_CERES_COMPILE_OPTIONS ${CERES_COMPONENTS_VAR}
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CERES_NO_CXSPARSE "CXSparse;SparseLinearAlgebraLibrary")
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add_to_output_if_not_found(CURRENT_CERES_COMPILE_OPTIONS ${CERES_COMPONENTS_VAR}
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CERES_RESTRICT_SCHUR_SPECIALIZATION "SchurSpecializations")
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add_to_output_if_found(CURRENT_CERES_COMPILE_OPTIONS ${CERES_COMPONENTS_VAR}
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CERES_USE_CXX11 "C++11")
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add_to_output_if_found(CURRENT_CERES_COMPILE_OPTIONS ${CERES_COMPONENTS_VAR}
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CERES_USE_OPENMP "OpenMP;Multithreading")
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add_to_output_if_found(CURRENT_CERES_COMPILE_OPTIONS ${CERES_COMPONENTS_VAR}
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CERES_USE_TBB "TBB;Multithreading")
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# Remove duplicates of SparseLinearAlgebraLibrary if multiple sparse backends
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# are present.
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list(REMOVE_DUPLICATES ${CERES_COMPONENTS_VAR})
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set(${CERES_COMPONENTS_VAR} "${${CERES_COMPONENTS_VAR}}" PARENT_SCOPE)
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endfunction()
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