| # - 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 |
| # |
| # and the following imported target: |
| # |
| # Eigen3::Eigen - The header-only Eigen library |
| # |
| # This module reads hints about search locations from |
| # the following environment variables: |
| # |
| # EIGEN3_ROOT |
| # EIGEN3_ROOT_DIR |
| |
| # Copyright (c) 2006, 2007 Montel Laurent, <montel@kde.org> |
| # Copyright (c) 2008, 2009 Gael Guennebaud, <g.gael@free.fr> |
| # Copyright (c) 2009 Benoit Jacob <jacob.benoit.1@gmail.com> |
| # 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}) |
| set(Eigen3_FOUND ${EIGEN3_VERSION_OK}) |
| |
| else (EIGEN3_INCLUDE_DIR) |
| |
| # search first if an Eigen3Config.cmake is available in the system, |
| # if successful this would set EIGEN3_INCLUDE_DIR and the rest of |
| # the script will work as usual |
| find_package(Eigen3 ${Eigen3_FIND_VERSION} NO_MODULE QUIET) |
| |
| if(NOT EIGEN3_INCLUDE_DIR) |
| find_path(EIGEN3_INCLUDE_DIR NAMES signature_of_eigen3_matrix_library |
| HINTS |
| ENV EIGEN3_ROOT |
| ENV EIGEN3_ROOT_DIR |
| PATHS |
| ${CMAKE_INSTALL_PREFIX}/include |
| ${KDE4_INCLUDE_DIR} |
| PATH_SUFFIXES eigen3 eigen |
| ) |
| endif(NOT EIGEN3_INCLUDE_DIR) |
| |
| if(EIGEN3_INCLUDE_DIR) |
| _eigen3_check_version() |
| endif(EIGEN3_INCLUDE_DIR) |
| |
| include(FindPackageHandleStandardArgs) |
| find_package_handle_standard_args(Eigen3 DEFAULT_MSG EIGEN3_INCLUDE_DIR EIGEN3_VERSION_OK) |
| |
| mark_as_advanced(EIGEN3_INCLUDE_DIR) |
| |
| endif(EIGEN3_INCLUDE_DIR) |
| |
| if(EIGEN3_FOUND AND NOT TARGET Eigen3::Eigen) |
| add_library(Eigen3::Eigen INTERFACE IMPORTED) |
| set_target_properties(Eigen3::Eigen PROPERTIES |
| INTERFACE_INCLUDE_DIRECTORIES "${EIGEN3_INCLUDE_DIR}") |
| endif() |