mirror of
https://github.com/ceres-solver/ceres-solver.git
synced 2026-08-29 08:34:37 +08:00
Sergiu Deitsch
f90833f5fa
Currently, the logic for exporting symbols is rather complicated: when tests are enabled internal symbols are exported in addition to the public symbols. Such logic causes several problems. (1) Test binaries link against a Ceres build that is different from the final release since fewer optimizations are applied if more symbols are exported. (2) Also, some toolchains hide symbols by default breaking the existing logic eventually causing linker errors. Since internal symbols are not intended to be used outside of the project, we can compile them into object files and use exactly the same binary code both for the final build and the tests without relying on conditionals. By default, all symbols are now hidden unless annotated as public. Internal symbols are explicitly marked as not being exported in case users chose not to hide symbols by default. Change-Id: I589dd10be2f6f438508783cf99d141af0120057b
116 lines
5.8 KiB
CMake
116 lines
5.8 KiB
CMake
# Ceres Solver - A fast non-linear least squares minimizer
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# Copyright 2022 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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# This must take place outside of CONFIGURE_CERES_CONFIG() in order that
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# we can determine where *this* file is, and thus the relative path to
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# config.h.in. Inside of CONFIGURE_CERES_CONFIG(), CMAKE_CURRENT_LIST_DIR
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# refers to the caller of CONFIGURE_CERES_CONFIG(), not this file.
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set(CERES_CONFIG_IN_FILE "${CMAKE_CURRENT_LIST_DIR}/config.h.in")
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# CreateCeresConfig.cmake - Create the config.h for Ceres.
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#
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# This function configures the Ceres config.h file based on the current
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# compile options and copies it into the specified location. It should be
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# called before Ceres is built so that the correct config.h is used when
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# Ceres is compiled.
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#
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# INPUTS:
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# CURRENT_CERES_COMPILE_OPTIONS: List of currently enabled Ceres compile
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# options. These are compared against the
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# full list of valid options, which are read
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# from config.h.in. Any options present
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# which are not part of the valid set will
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# invoke an error. Any valid option present
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# will be enabled in the resulting config.h,
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# all other options will be disabled.
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#
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# CERES_CONFIG_OUTPUT_DIRECTORY: Path to output directory in which to save
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# the configured config.h. Typically this
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# will be <src>/include/ceres/internal.
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function(CREATE_CERES_CONFIG CURRENT_CERES_COMPILE_OPTIONS CERES_CONFIG_OUTPUT_DIRECTORY)
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# Create the specified output directory if it does not exist.
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if (NOT EXISTS "${CERES_CONFIG_OUTPUT_DIRECTORY}")
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message(STATUS "Creating configured Ceres config.h output directory: "
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"${CERES_CONFIG_OUTPUT_DIRECTORY}")
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file(MAKE_DIRECTORY "${CERES_CONFIG_OUTPUT_DIRECTORY}")
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endif()
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if (EXISTS "${CERES_CONFIG_OUTPUT_DIRECTORY}" AND
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NOT IS_DIRECTORY "${CERES_CONFIG_OUTPUT_DIRECTORY}")
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message(FATAL_ERROR "Ceres Bug: Specified CERES_CONFIG_OUTPUT_DIRECTORY: "
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"${CERES_CONFIG_OUTPUT_DIRECTORY} exists, but is not a directory.")
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endif()
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# Read all possible configurable compile options from config.h.in, this avoids
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# us having to hard-code in this file what the valid options are.
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file(READ ${CERES_CONFIG_IN_FILE} CERES_CONFIG_IN_CONTENTS)
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string(REGEX MATCHALL "@[^@ $]+@"
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ALL_CONFIGURABLE_CERES_OPTIONS "${CERES_CONFIG_IN_CONTENTS}")
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# Removing @ symbols at beginning and end of each option.
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string(REPLACE "@" ""
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ALL_CONFIGURABLE_CERES_OPTIONS "${ALL_CONFIGURABLE_CERES_OPTIONS}")
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# Ensure that there are no repetitions in the current compile options.
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list(REMOVE_DUPLICATES CURRENT_CERES_COMPILE_OPTIONS)
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foreach (CERES_OPTION ${ALL_CONFIGURABLE_CERES_OPTIONS})
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# Try and find the option in the list of current compile options, if it
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# is present, then the option is enabled, otherwise it is disabled.
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list(FIND CURRENT_CERES_COMPILE_OPTIONS ${CERES_OPTION} OPTION_ENABLED)
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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 (OPTION_ENABLED GREATER -1)
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message(STATUS "Enabling ${CERES_OPTION} in Ceres config.h")
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set(${CERES_OPTION} "#define ${CERES_OPTION}")
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# Remove the item from the list of current options so that we can identify
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# any options that were in CURRENT_CERES_COMPILE_OPTIONS, but not in
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# ALL_CONFIGURABLE_CERES_OPTIONS (which is an error).
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list(REMOVE_ITEM CURRENT_CERES_COMPILE_OPTIONS ${CERES_OPTION})
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else()
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set(${CERES_OPTION} "// #define ${CERES_OPTION}")
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endif()
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endforeach()
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# CURRENT_CERES_COMPILE_OPTIONS should now be an empty list, any elements
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# remaining were not present in ALL_CONFIGURABLE_CERES_OPTIONS read from
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# config.h.in.
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if (CURRENT_CERES_COMPILE_OPTIONS)
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message(FATAL_ERROR "Ceres Bug: CURRENT_CERES_COMPILE_OPTIONS contained "
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"the following options which were not present in config.h.in: "
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"${CURRENT_CERES_COMPILE_OPTIONS}")
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endif()
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configure_file(${CERES_CONFIG_IN_FILE}
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"${CERES_CONFIG_OUTPUT_DIRECTORY}/config.h" @ONLY)
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endfunction()
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