167 lines
7.4 KiB
CMake
167 lines
7.4 KiB
CMake
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# 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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# FindEigen.cmake - Find Eigen library, version >= 3.
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#
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# This module defines the following variables:
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#
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# EIGEN_FOUND: TRUE iff Eigen is found.
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# EIGEN_INCLUDE_DIRS: Include directories for Eigen.
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#
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# EIGEN_VERSION: Extracted from Eigen/src/Core/util/Macros.h
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# EIGEN_WORLD_VERSION: Equal to 3 if EIGEN_VERSION = 3.2.0
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# EIGEN_MAJOR_VERSION: Equal to 2 if EIGEN_VERSION = 3.2.0
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# EIGEN_MINOR_VERSION: Equal to 0 if EIGEN_VERSION = 3.2.0
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#
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# The following variables control the behaviour of this module:
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#
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# EIGEN_INCLUDE_DIR_HINTS: List of additional directories in which to
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# search for eigen includes, e.g: /timbuktu/eigen3.
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#
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# The following variables are also defined by this module, but in line with
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# CMake recommended FindPackage() module style should NOT be referenced directly
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# by callers (use the plural variables detailed above instead). These variables
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# do however affect the behaviour of the module via FIND_[PATH/LIBRARY]() which
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# are NOT re-called (i.e. search for library is not repeated) if these variables
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# are set with valid values _in the CMake cache_. This means that if these
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# variables are set directly in the cache, either by the user in the CMake GUI,
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# or by the user passing -DVAR=VALUE directives to CMake when called (which
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# explicitly defines a cache variable), then they will be used verbatim,
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# bypassing the HINTS variables and other hard-coded search locations.
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#
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# EIGEN_INCLUDE_DIR: Include directory for CXSparse, not including the
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# include directory of any dependencies.
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# Called if we failed to find Eigen or any of it's required dependencies,
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# unsets all public (designed to be used externally) variables and reports
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# error message at priority depending upon [REQUIRED/QUIET/<NONE>] argument.
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macro(EIGEN_REPORT_NOT_FOUND REASON_MSG)
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unset(EIGEN_FOUND)
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unset(EIGEN_INCLUDE_DIRS)
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# Make results of search visible in the CMake GUI if Eigen has not
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# been found so that user does not have to toggle to advanced view.
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mark_as_advanced(CLEAR EIGEN_INCLUDE_DIR)
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# Note <package>_FIND_[REQUIRED/QUIETLY] variables defined by FindPackage()
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# use the camelcase library name, not uppercase.
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if (Eigen_FIND_QUIETLY)
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message(STATUS "Failed to find Eigen - " ${REASON_MSG} ${ARGN})
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elseif (Eigen_FIND_REQUIRED)
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message(FATAL_ERROR "Failed to find Eigen - " ${REASON_MSG} ${ARGN})
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else()
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# Neither QUIETLY nor REQUIRED, use no priority which emits a message
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# but continues configuration and allows generation.
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message("-- Failed to find Eigen - " ${REASON_MSG} ${ARGN})
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endif ()
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endmacro(EIGEN_REPORT_NOT_FOUND)
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# Search user-installed locations first, so that we prefer user installs
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# to system installs where both exist.
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#
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# TODO: Add standard Windows search locations for Eigen.
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list(APPEND EIGEN_CHECK_INCLUDE_DIRS
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/usr/local/include
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/usr/local/homebrew/include # Mac OS X
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/opt/local/var/macports/software # Mac OS X.
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/opt/local/include
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/usr/include)
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# Additional suffixes to try appending to each search path.
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list(APPEND EIGEN_CHECK_PATH_SUFFIXES
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eigen3 # Default root directory for Eigen.
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Eigen/include/eigen3 ) # Windows (for C:/Program Files prefix).
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# Search supplied hint directories first if supplied.
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find_path(EIGEN_INCLUDE_DIR
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NAMES Eigen/Core
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PATHS ${EIGEN_INCLUDE_DIR_HINTS}
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${EIGEN_CHECK_INCLUDE_DIRS}
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PATH_SUFFIXES ${EIGEN_CHECK_PATH_SUFFIXES})
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if (NOT EIGEN_INCLUDE_DIR OR
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NOT EXISTS ${EIGEN_INCLUDE_DIR})
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eigen_report_not_found(
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"Could not find eigen3 include directory, set EIGEN_INCLUDE_DIR to "
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"path to eigen3 include directory, e.g. /usr/local/include/eigen3.")
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endif (NOT EIGEN_INCLUDE_DIR OR
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NOT EXISTS ${EIGEN_INCLUDE_DIR})
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# Mark internally as found, then verify. EIGEN_REPORT_NOT_FOUND() unsets
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# if called.
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set(EIGEN_FOUND TRUE)
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# Extract Eigen version from Eigen/src/Core/util/Macros.h
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if (EIGEN_INCLUDE_DIR)
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set(EIGEN_VERSION_FILE ${EIGEN_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h)
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if (NOT EXISTS ${EIGEN_VERSION_FILE})
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eigen_report_not_found(
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"Could not find file: ${EIGEN_VERSION_FILE} "
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"containing version information in Eigen install located at: "
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"${EIGEN_INCLUDE_DIR}.")
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else (NOT EXISTS ${EIGEN_VERSION_FILE})
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file(READ ${EIGEN_VERSION_FILE} EIGEN_VERSION_FILE_CONTENTS)
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string(REGEX MATCH "#define EIGEN_WORLD_VERSION [0-9]+"
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EIGEN_WORLD_VERSION "${EIGEN_VERSION_FILE_CONTENTS}")
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string(REGEX REPLACE "#define EIGEN_WORLD_VERSION ([0-9]+)" "\\1"
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EIGEN_WORLD_VERSION "${EIGEN_WORLD_VERSION}")
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string(REGEX MATCH "#define EIGEN_MAJOR_VERSION [0-9]+"
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EIGEN_MAJOR_VERSION "${EIGEN_VERSION_FILE_CONTENTS}")
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string(REGEX REPLACE "#define EIGEN_MAJOR_VERSION ([0-9]+)" "\\1"
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EIGEN_MAJOR_VERSION "${EIGEN_MAJOR_VERSION}")
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string(REGEX MATCH "#define EIGEN_MINOR_VERSION [0-9]+"
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EIGEN_MINOR_VERSION "${EIGEN_VERSION_FILE_CONTENTS}")
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string(REGEX REPLACE "#define EIGEN_MINOR_VERSION ([0-9]+)" "\\1"
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EIGEN_MINOR_VERSION "${EIGEN_MINOR_VERSION}")
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# This is on a single line s/t CMake does not interpret it as a list of
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# elements and insert ';' separators which would result in 3.;2.;0 nonsense.
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set(EIGEN_VERSION "${EIGEN_WORLD_VERSION}.${EIGEN_MAJOR_VERSION}.${EIGEN_MINOR_VERSION}")
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endif (NOT EXISTS ${EIGEN_VERSION_FILE})
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endif (EIGEN_INCLUDE_DIR)
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# Set standard CMake FindPackage variables if found.
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if (EIGEN_FOUND)
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set(EIGEN_INCLUDE_DIRS ${EIGEN_INCLUDE_DIR})
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endif (EIGEN_FOUND)
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# Handle REQUIRED / QUIET optional arguments and version.
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Eigen
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REQUIRED_VARS EIGEN_INCLUDE_DIRS
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VERSION_VAR EIGEN_VERSION)
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# Only mark internal variables as advanced if we found Eigen, otherwise
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# leave it visible in the standard GUI for the user to set manually.
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if (EIGEN_FOUND)
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mark_as_advanced(FORCE EIGEN_INCLUDE_DIR)
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endif (EIGEN_FOUND)
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