Attachment 742 Details for Bug 1319 – Updated FindEigen3.cmake for setting Eigen as a target

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Updated FindEigen3.cmake for setting Eigen as a target

FindEigen3.cmake (text/x-cmake), 3.70 KB, created by Alain Vaucher on 2016-10-02 16:57:16 UTC

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Creator: Alain Vaucher

Created: 2016-10-02 16:57:16 UTC

Size: 3.70 KB

patch

obsolete

># - 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
>#
># This module reads hints about search locations from 
># the following enviroment 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)
>
>macro(_eigen3_define_imported_target)
>  add_library(Eigen3 INTERFACE IMPORTED)
>  set_target_properties(Eigen3 PROPERTIES INTERFACE_INCLUDE_DIRECTORIES ${EIGEN3_INCLUDE_DIR})
>endmacro(_eigen3_define_imported_target)
>
>if (EIGEN3_INCLUDE_DIR)
>
>  # in cache already
>  _eigen3_check_version()
>  _eigen3_define_imported_target()
>  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()
>	_eigen3_define_imported_target()
>  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)
>

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Attachments on bug 1319: 742