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# - Try to find Eigen3 lib |
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# |
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# This module supports requiring a minimum version, e.g. you can do |
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# find_package(Eigen3 3.1.2) |
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# to require version 3.1.2 or newer of Eigen3. |
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# |
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# Once done this will define |
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# |
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# EIGEN3_FOUND - system has eigen lib with correct version |
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# EIGEN3_INCLUDE_DIR - the eigen include directory |
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# EIGEN3_VERSION - eigen version |
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|
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# Copyright (c) 2006, 2007 Montel Laurent, <montel@kde.org> |
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# Copyright (c) 2008, 2009 Gael Guennebaud, <g.gael@free.fr> |
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# Copyright (c) 2009 Benoit Jacob <jacob.benoit.1@gmail.com> |
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# Redistribution and use is allowed according to the terms of the 2-clause BSD license. |
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|
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if(NOT Eigen3_FIND_VERSION) |
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if(NOT Eigen3_FIND_VERSION_MAJOR) |
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set(Eigen3_FIND_VERSION_MAJOR 2) |
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endif(NOT Eigen3_FIND_VERSION_MAJOR) |
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if(NOT Eigen3_FIND_VERSION_MINOR) |
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set(Eigen3_FIND_VERSION_MINOR 91) |
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endif(NOT Eigen3_FIND_VERSION_MINOR) |
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if(NOT Eigen3_FIND_VERSION_PATCH) |
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set(Eigen3_FIND_VERSION_PATCH 0) |
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endif(NOT Eigen3_FIND_VERSION_PATCH) |
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|
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set(Eigen3_FIND_VERSION "${Eigen3_FIND_VERSION_MAJOR}.${Eigen3_FIND_VERSION_MINOR}.${Eigen3_FIND_VERSION_PATCH}") |
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endif(NOT Eigen3_FIND_VERSION) |
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|
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macro(_eigen3_check_version) |
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file(READ "${EIGEN3_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen3_version_header) |
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|
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string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen3_world_version_match "${_eigen3_version_header}") |
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set(EIGEN3_WORLD_VERSION "${CMAKE_MATCH_1}") |
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string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen3_major_version_match "${_eigen3_version_header}") |
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set(EIGEN3_MAJOR_VERSION "${CMAKE_MATCH_1}") |
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string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen3_minor_version_match "${_eigen3_version_header}") |
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set(EIGEN3_MINOR_VERSION "${CMAKE_MATCH_1}") |
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|
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set(EIGEN3_VERSION ${EIGEN3_WORLD_VERSION}.${EIGEN3_MAJOR_VERSION}.${EIGEN3_MINOR_VERSION}) |
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if(${EIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION}) |
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set(EIGEN3_VERSION_OK FALSE) |
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else(${EIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION}) |
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set(EIGEN3_VERSION_OK TRUE) |
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endif(${EIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION}) |
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|
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if(NOT EIGEN3_VERSION_OK) |
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|
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message(STATUS "Eigen3 version ${EIGEN3_VERSION} found in ${EIGEN3_INCLUDE_DIR}, " |
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"but at least version ${Eigen3_FIND_VERSION} is required") |
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endif(NOT EIGEN3_VERSION_OK) |
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endmacro(_eigen3_check_version) |
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|
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if (EIGEN3_INCLUDE_DIR) |
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|
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# in cache already |
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_eigen3_check_version() |
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set(EIGEN3_FOUND ${EIGEN3_VERSION_OK}) |
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|
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else (EIGEN3_INCLUDE_DIR) |
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|
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find_path(EIGEN3_INCLUDE_DIR NAMES signature_of_eigen3_matrix_library |
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PATHS |
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${CMAKE_INSTALL_PREFIX}/include |
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${KDE4_INCLUDE_DIR} |
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PATH_SUFFIXES eigen3 eigen |
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) |
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|
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if(EIGEN3_INCLUDE_DIR) |
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_eigen3_check_version() |
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endif(EIGEN3_INCLUDE_DIR) |
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|
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include(FindPackageHandleStandardArgs) |
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find_package_handle_standard_args(Eigen3 DEFAULT_MSG EIGEN3_INCLUDE_DIR EIGEN3_VERSION_OK) |
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|
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mark_as_advanced(EIGEN3_INCLUDE_DIR) |
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|
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endif(EIGEN3_INCLUDE_DIR) |
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