| 1 | # - Try to find Eigen3 lib
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| 2 | #
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| 3 | # This module supports requiring a minimum version, e.g. you can do
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| 4 | # find_package(Eigen3 3.1.2)
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| 5 | # to require version 3.1.2 or newer of Eigen3.
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| 6 | #
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| 7 | # Once done this will define
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| 8 | #
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| 9 | # EIGEN_FOUND - system has eigen lib with correct version
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| 10 | # EIGEN_INCLUDE_DIR - the eigen include directory
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| 11 | # EIGEN_VERSION - eigen version
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| 12 |
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| 13 | # Copyright (c) 2006, 2007 Montel Laurent, <montel@kde.org>
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| 14 | # Copyright (c) 2008, 2009 Gael Guennebaud, <g.gael@free.fr>
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| 15 | # Copyright (c) 2009 Benoit Jacob <jacob.benoit.1@gmail.com>
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| 16 | # Redistribution and use is allowed according to the terms of the 2-clause BSD license.
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| 17 |
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| 18 | if(NOT Eigen_FIND_VERSION)
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| 19 | if(NOT Eigen_FIND_VERSION_MAJOR)
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| 20 | set(Eigen_FIND_VERSION_MAJOR 2)
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| 21 | endif(NOT Eigen_FIND_VERSION_MAJOR)
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| 22 | if(NOT Eigen_FIND_VERSION_MINOR)
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| 23 | set(Eigen_FIND_VERSION_MINOR 91)
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| 24 | endif(NOT Eigen_FIND_VERSION_MINOR)
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| 25 | if(NOT Eigen_FIND_VERSION_PATCH)
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| 26 | set(Eigen_FIND_VERSION_PATCH 0)
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| 27 | endif(NOT Eigen_FIND_VERSION_PATCH)
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| 28 |
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| 29 | set(Eigen_FIND_VERSION "${Eigen_FIND_VERSION_MAJOR}.${Eigen_FIND_VERSION_MINOR}.${Eigen_FIND_VERSION_PATCH}")
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| 30 | endif(NOT Eigen_FIND_VERSION)
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| 31 |
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| 32 | macro(_eigen3_check_version)
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| 33 | file(READ "${EIGEN_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen3_version_header)
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| 34 |
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| 35 | string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen3_world_version_match "${_eigen3_version_header}")
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| 36 | set(EIGEN_WORLD_VERSION "${CMAKE_MATCH_1}")
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| 37 | string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen3_major_version_match "${_eigen3_version_header}")
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| 38 | set(EIGEN_MAJOR_VERSION "${CMAKE_MATCH_1}")
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| 39 | string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen3_minor_version_match "${_eigen3_version_header}")
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| 40 | set(EIGEN_MINOR_VERSION "${CMAKE_MATCH_1}")
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| 41 |
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| 42 | set(EIGEN_VERSION ${EIGEN_WORLD_VERSION}.${EIGEN_MAJOR_VERSION}.${EIGEN_MINOR_VERSION})
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| 43 | if(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
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| 44 | set(EIGEN_VERSION_OK FALSE)
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| 45 | else(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
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| 46 | set(EIGEN_VERSION_OK TRUE)
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| 47 | endif(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
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| 48 |
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| 49 | if(NOT EIGEN_VERSION_OK)
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| 50 |
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| 51 | message(STATUS "Eigen version ${EIGEN_VERSION} found in ${EIGEN_INCLUDE_DIR}, "
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| 52 | "but at least version ${Eigen_FIND_VERSION} is required")
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| 53 | endif(NOT EIGEN_VERSION_OK)
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| 54 | endmacro(_eigen3_check_version)
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| 55 |
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| 56 | if (EIGEN_INCLUDE_DIRS)
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| 57 |
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| 58 | # in cache already
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| 59 | _eigen3_check_version()
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| 60 | set(EIGEN_FOUND ${EIGEN_VERSION_OK})
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| 61 |
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| 62 | else ()
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| 63 |
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| 64 | find_path(EIGEN_INCLUDE_DIR NAMES signature_of_eigen3_matrix_library
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| 65 | PATHS
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| 66 | ${CMAKE_INSTALL_PREFIX}/include
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| 67 | ${KDE4_INCLUDE_DIR}
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| 68 | PATH_SUFFIXES eigen3 eigen
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| 69 | )
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| 70 |
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| 71 | if(EIGEN_INCLUDE_DIR)
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| 72 | _eigen3_check_version()
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| 73 | endif(EIGEN_INCLUDE_DIR)
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| 74 |
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| 75 | include(FindPackageHandleStandardArgs)
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| 76 | find_package_handle_standard_args(Eigen DEFAULT_MSG EIGEN_INCLUDE_DIR EIGEN_VERSION_OK)
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| 77 |
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| 78 | mark_as_advanced(EIGEN_INCLUDE_DIR)
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| 79 | SET(EIGEN_INCLUDE_DIRS ${EIGEN_INCLUDE_DIR} CACHE PATH "The Eigen include path.")
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| 80 |
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| 81 | endif()
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| 82 |
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