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