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https://gitlab.com/libeigen/eigen.git
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6fb3e5f176
Ancient versions of CMake required else(), endif(), and similar block termination commands to have arguments matching the command starting the block. This is no longer the preferred style.
81 lines
2.6 KiB
CMake
81 lines
2.6 KiB
CMake
# - Try to find Eigen2 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(Eigen2 2.0.3)
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# to require version 2.0.3 to newer of Eigen2.
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#
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# Once done this will define
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#
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# EIGEN2_FOUND - system has eigen lib with correct version
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# EIGEN2_INCLUDE_DIR - the eigen include directory
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# EIGEN2_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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# Redistribution and use is allowed according to the terms of the BSD license.
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if(NOT Eigen2_FIND_VERSION)
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if(NOT Eigen2_FIND_VERSION_MAJOR)
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set(Eigen2_FIND_VERSION_MAJOR 2)
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endif()
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if(NOT Eigen2_FIND_VERSION_MINOR)
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set(Eigen2_FIND_VERSION_MINOR 0)
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endif()
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if(NOT Eigen2_FIND_VERSION_PATCH)
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set(Eigen2_FIND_VERSION_PATCH 0)
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endif()
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set(Eigen2_FIND_VERSION "${Eigen2_FIND_VERSION_MAJOR}.${Eigen2_FIND_VERSION_MINOR}.${Eigen2_FIND_VERSION_PATCH}")
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endif()
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macro(_eigen2_check_version)
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file(READ "${EIGEN2_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen2_version_header)
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string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen2_world_version_match "${_eigen2_version_header}")
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set(EIGEN2_WORLD_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen2_major_version_match "${_eigen2_version_header}")
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set(EIGEN2_MAJOR_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen2_minor_version_match "${_eigen2_version_header}")
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set(EIGEN2_MINOR_VERSION "${CMAKE_MATCH_1}")
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set(EIGEN2_VERSION ${EIGEN2_WORLD_VERSION}.${EIGEN2_MAJOR_VERSION}.${EIGEN2_MINOR_VERSION})
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if((${EIGEN2_WORLD_VERSION} NOTEQUAL 2) OR (${EIGEN2_MAJOR_VERSION} GREATER 10) OR (${EIGEN2_VERSION} VERSION_LESS ${Eigen2_FIND_VERSION}))
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set(EIGEN2_VERSION_OK FALSE)
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else()
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set(EIGEN2_VERSION_OK TRUE)
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endif()
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if(NOT EIGEN2_VERSION_OK)
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message(STATUS "Eigen2 version ${EIGEN2_VERSION} found in ${EIGEN2_INCLUDE_DIR}, "
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"but at least version ${Eigen2_FIND_VERSION} is required")
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endif()
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endmacro()
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if (EIGEN2_INCLUDE_DIR)
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# in cache already
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_eigen2_check_version()
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set(EIGEN2_FOUND ${EIGEN2_VERSION_OK})
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else ()
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find_path(EIGEN2_INCLUDE_DIR NAMES Eigen/Core
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PATHS
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${INCLUDE_INSTALL_DIR}
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${KDE4_INCLUDE_DIR}
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PATH_SUFFIXES eigen2
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)
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if(EIGEN2_INCLUDE_DIR)
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_eigen2_check_version()
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Eigen2 DEFAULT_MSG EIGEN2_INCLUDE_DIR EIGEN2_VERSION_OK)
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mark_as_advanced(EIGEN2_INCLUDE_DIR)
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endif()
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