84 lines
3.0 KiB
CMake
84 lines
3.0 KiB
CMake
# - Try to find Eigen 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(Eigen 3.1.2)
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# to require version 3.1.2 or newer of Eigen.
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#
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# Once done this will define
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#
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# EIGEN_FOUND - system has eigen lib with correct version
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# EIGEN_INCLUDE_DIR - the eigen include directory
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# EIGEN_VERSION - eigen version
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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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if(NOT Eigen_FIND_VERSION)
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if(NOT Eigen_FIND_VERSION_MAJOR)
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set(Eigen_FIND_VERSION_MAJOR 2)
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endif(NOT Eigen_FIND_VERSION_MAJOR)
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if(NOT Eigen_FIND_VERSION_MINOR)
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set(Eigen_FIND_VERSION_MINOR 91)
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endif(NOT Eigen_FIND_VERSION_MINOR)
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if(NOT Eigen_FIND_VERSION_PATCH)
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set(Eigen_FIND_VERSION_PATCH 0)
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endif(NOT Eigen_FIND_VERSION_PATCH)
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set(Eigen_FIND_VERSION "${Eigen_FIND_VERSION_MAJOR}.${Eigen_FIND_VERSION_MINOR}.${Eigen_FIND_VERSION_PATCH}")
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endif(NOT Eigen_FIND_VERSION)
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macro(_eigen3_check_version)
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file(READ "${EIGEN_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen3_version_header)
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string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen3_world_version_match "${_eigen3_version_header}")
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set(Eigen_WORLD_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen3_major_version_match "${_eigen3_version_header}")
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set(Eigen_MAJOR_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen3_minor_version_match "${_eigen3_version_header}")
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set(Eigen_MINOR_VERSION "${CMAKE_MATCH_1}")
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set(EIGEN_VERSION ${Eigen_WORLD_VERSION}.${Eigen_MAJOR_VERSION}.${Eigen_MINOR_VERSION})
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if(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
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set(EIGEN_VERSION_OK FALSE)
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else(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
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set(EIGEN_VERSION_OK TRUE)
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endif(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
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if(NOT EIGEN_VERSION_OK)
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message(STATUS "Eigen version ${EIGEN_VERSION} found in ${EIGEN_INCLUDE_DIR}, "
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"but at least version ${Eigen_FIND_VERSION} is required")
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endif(NOT EIGEN_VERSION_OK)
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endmacro(_eigen3_check_version)
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if (EIGEN_INCLUDE_DIR)
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# in cache already
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_eigen3_check_version()
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set(EIGEN_FOUND ${EIGEN_VERSION_OK})
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else()
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find_path(EIGEN_INCLUDE_DIR NAMES signature_of_eigen3_matrix_library
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PATHS
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third_party/eigen
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../eigen
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../../eigen
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/usr/local/include
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/opt/local/include
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${CMAKE_INSTALL_PREFIX}/include
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${KDE4_INCLUDE_DIR}
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PATH_SUFFIXES eigen3 eigen
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)
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if(EIGEN_INCLUDE_DIR)
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_eigen3_check_version()
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endif(EIGEN_INCLUDE_DIR)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Eigen DEFAULT_MSG EIGEN_INCLUDE_DIR EIGEN_VERSION_OK)
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mark_as_advanced(EIGEN_INCLUDE_DIR)
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endif()
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# In case anyone relies on the plural form.
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set(EIGEN_INCLUDE_DIRS "${EIGEN_INCLUDE_DIR}")
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