| 1 | # - Try to find Eigen2 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(Eigen2 2.0.3)
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| 5 | # to require version 2.0.3 to newer of Eigen2.
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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 | # EIGEN2_FOUND - system has eigen lib with correct version
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| 10 | # EIGEN2_INCLUDE_DIR - the eigen include directory
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| 11 | # EIGEN2_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 | # Redistribution and use is allowed according to the terms of the BSD license.
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| 16 |
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| 17 | if(NOT Eigen2_FIND_VERSION)
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| 18 | if(NOT Eigen2_FIND_VERSION_MAJOR)
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| 19 | set(Eigen2_FIND_VERSION_MAJOR 2)
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| 20 | endif(NOT Eigen2_FIND_VERSION_MAJOR)
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| 21 | if(NOT Eigen2_FIND_VERSION_MINOR)
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| 22 | set(Eigen2_FIND_VERSION_MINOR 0)
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| 23 | endif(NOT Eigen2_FIND_VERSION_MINOR)
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| 24 | if(NOT Eigen2_FIND_VERSION_PATCH)
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| 25 | set(Eigen2_FIND_VERSION_PATCH 0)
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| 26 | endif(NOT Eigen2_FIND_VERSION_PATCH)
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| 27 |
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| 28 | set(Eigen2_FIND_VERSION "${Eigen2_FIND_VERSION_MAJOR}.${Eigen2_FIND_VERSION_MINOR}.${Eigen2_FIND_VERSION_PATCH}")
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| 29 | endif(NOT Eigen2_FIND_VERSION)
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| 30 |
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| 31 | macro(_eigen2_check_version)
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| 32 | file(READ "${EIGEN2_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen2_version_header)
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| 33 |
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| 34 | string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen2_world_version_match "${_eigen2_version_header}")
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| 35 | set(EIGEN2_WORLD_VERSION "${CMAKE_MATCH_1}")
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| 36 | string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen2_major_version_match "${_eigen2_version_header}")
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| 37 | set(EIGEN2_MAJOR_VERSION "${CMAKE_MATCH_1}")
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| 38 | string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen2_minor_version_match "${_eigen2_version_header}")
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| 39 | set(EIGEN2_MINOR_VERSION "${CMAKE_MATCH_1}")
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| 40 |
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| 41 | set(EIGEN2_VERSION ${EIGEN2_WORLD_VERSION}.${EIGEN2_MAJOR_VERSION}.${EIGEN2_MINOR_VERSION})
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| 42 | if((${EIGEN2_WORLD_VERSION} NOTEQUAL 2) OR (${EIGEN2_MAJOR_VERSION} GREATER 10) OR (${EIGEN2_VERSION} VERSION_LESS ${Eigen2_FIND_VERSION}))
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| 43 | set(EIGEN2_VERSION_OK FALSE)
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| 44 | else()
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| 45 | set(EIGEN2_VERSION_OK TRUE)
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| 46 | endif()
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| 47 |
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| 48 | if(NOT EIGEN2_VERSION_OK)
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| 49 |
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| 50 | message(STATUS "Eigen2 version ${EIGEN2_VERSION} found in ${EIGEN2_INCLUDE_DIR}, "
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| 51 | "but at least version ${Eigen2_FIND_VERSION} is required")
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| 52 | endif(NOT EIGEN2_VERSION_OK)
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| 53 | endmacro(_eigen2_check_version)
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| 54 |
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| 55 | if (EIGEN2_INCLUDE_DIR)
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| 56 |
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| 57 | # in cache already
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| 58 | _eigen2_check_version()
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| 59 | set(EIGEN2_FOUND ${EIGEN2_VERSION_OK})
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| 60 |
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| 61 | else (EIGEN2_INCLUDE_DIR)
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| 62 |
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| 63 | find_path(EIGEN2_INCLUDE_DIR NAMES Eigen/Core
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| 64 | PATHS
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| 65 | ${INCLUDE_INSTALL_DIR}
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| 66 | ${KDE4_INCLUDE_DIR}
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| 67 | PATH_SUFFIXES eigen2
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| 68 | )
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| 69 |
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| 70 | if(EIGEN2_INCLUDE_DIR)
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| 71 | _eigen2_check_version()
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| 72 | endif(EIGEN2_INCLUDE_DIR)
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| 73 |
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| 74 | include(FindPackageHandleStandardArgs)
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| 75 | find_package_handle_standard_args(Eigen2 DEFAULT_MSG EIGEN2_INCLUDE_DIR EIGEN2_VERSION_OK)
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| 76 |
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| 77 | mark_as_advanced(EIGEN2_INCLUDE_DIR)
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| 78 |
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| 79 | endif(EIGEN2_INCLUDE_DIR)
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| 80 |
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