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90 lines
3.3 KiB
90 lines
3.3 KiB
# - 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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# STORMEIGEN3_FOUND - system has eigen lib with correct version
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# STORMEIGEN3_INCLUDE_DIR - the eigen include directory
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# STORMEIGEN3_VERSION - eigen version
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#
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# This module reads hints about search locations from
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# the following enviroment variables:
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#
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# STORMEIGEN3_ROOT
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# STORMEIGEN3_ROOT_DIR
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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 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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set(Eigen3_FIND_VERSION "${Eigen3_FIND_VERSION_MAJOR}.${Eigen3_FIND_VERSION_MINOR}.${Eigen3_FIND_VERSION_PATCH}")
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endif(NOT Eigen3_FIND_VERSION)
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macro(_eigen3_check_version)
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file(READ "${STORMEIGEN3_INCLUDE_DIR}/StormEigen/src/Core/util/Macros.h" _eigen3_version_header)
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string(REGEX MATCH "define[ \t]+STORMEIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen3_world_version_match "${_eigen3_version_header}")
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set(STORMEIGEN3_WORLD_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+STORMEIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen3_major_version_match "${_eigen3_version_header}")
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set(STORMEIGEN3_MAJOR_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+STORMEIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen3_minor_version_match "${_eigen3_version_header}")
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set(STORMEIGEN3_MINOR_VERSION "${CMAKE_MATCH_1}")
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set(STORMEIGEN3_VERSION ${STORMEIGEN3_WORLD_VERSION}.${STORMEIGEN3_MAJOR_VERSION}.${STORMEIGEN3_MINOR_VERSION})
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if(${STORMEIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION})
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set(STORMEIGEN3_VERSION_OK FALSE)
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else(${STORMEIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION})
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set(STORMEIGEN3_VERSION_OK TRUE)
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endif(${STORMEIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION})
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if(NOT STORMEIGEN3_VERSION_OK)
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message(STATUS "Eigen3 version ${STORMEIGEN3_VERSION} found in ${STORMEIGEN3_INCLUDE_DIR}, "
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"but at least version ${Eigen3_FIND_VERSION} is required")
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endif(NOT STORMEIGEN3_VERSION_OK)
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endmacro(_eigen3_check_version)
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if (STORMEIGEN3_INCLUDE_DIR)
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# in cache already
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_eigen3_check_version()
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set(STORMEIGEN3_FOUND ${STORMEIGEN3_VERSION_OK})
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else (STORMEIGEN3_INCLUDE_DIR)
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find_path(STORMEIGEN3_INCLUDE_DIR NAMES signature_of_eigen3_matrix_library
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HINTS
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ENV STORMEIGEN3_ROOT
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ENV STORMEIGEN3_ROOT_DIR
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PATHS
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${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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if(STORMEIGEN3_INCLUDE_DIR)
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_eigen3_check_version()
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endif(STORMEIGEN3_INCLUDE_DIR)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Eigen3 DEFAULT_MSG STORMEIGEN3_INCLUDE_DIR STORMEIGEN3_VERSION_OK)
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mark_as_advanced(STORMEIGEN3_INCLUDE_DIR)
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endif(STORMEIGEN3_INCLUDE_DIR)
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