78 lines
2.5 KiB
CMake
78 lines
2.5 KiB
CMake
# Filename: FindEigen3.cmake
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# Authors: montel@kde.org, g.gael@free.fr, jacob.benoit.1@gmail.com
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# Redistribution and use is allowed according to the terms of the BSD license.
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#
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# Module modified to mangle the names for Panda3D.
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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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# HAVE_EIGEN - system has eigen lib with correct version
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# EIGEN_IPATH - the eigen include directory
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# EIGEN_VERSION - eigen version
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#
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if(NOT EIGEN_FIND_VERSION)
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if(NOT EIGEN_FIND_VERSION_MAJOR)
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set(EIGEN_FIND_VERSION_MAJOR 2)
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endif()
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if(NOT EIGEN_FIND_VERSION_MINOR)
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set(EIGEN_FIND_VERSION_MINOR 91)
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endif()
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if(NOT EIGEN_FIND_VERSION_PATCH)
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set(EIGEN_FIND_VERSION_PATCH 0)
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endif()
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set(EIGEN_FIND_VERSION "${EIGEN_FIND_VERSION_MAJOR}.${EIGEN_FIND_VERSION_MINOR}.${EIGEN_FIND_VERSION_PATCH}")
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endif()
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macro(_eigen_check_version)
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# Read version from Macros.h
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file(READ "${EIGEN_IPATH}/Eigen/src/Core/util/Macros.h" _eigen_version_header)
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# Parse version from read data
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string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen_world_version_match "${_eigen_version_header}")
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set(EIGEN_WORLD_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen_major_version_match "${_eigen_version_header}")
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set(EIGEN_MAJOR_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen_minor_version_match "${_eigen_version_header}")
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set(EIGEN_MINOR_VERSION "${CMAKE_MATCH_1}")
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# Set EIGEN_VERSION
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set(EIGEN_VERSION ${EIGEN_WORLD_VERSION}.${EIGEN_MAJOR_VERSION}.${EIGEN_MINOR_VERSION})
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# Make sure Eigen Version is at least the requested version
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if(${EIGEN_VERSION} VERSION_LESS ${EIGEN_FIND_VERSION})
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set(EIGEN_VERSION_OK FALSE)
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else(${EIGEN_VERSION} VERSION_LESS ${EIGEN_FIND_VERSION})
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set(EIGEN_VERSION_OK TRUE)
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endif(${EIGEN_VERSION} VERSION_LESS ${EIGEN_FIND_VERSION})
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endmacro()
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if(EIGEN_IPATH)
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# If already in cache, just check that the version is correct
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_eigen_check_version()
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set(HAVE_EIGEN ${EIGEN_VERSION_OK})
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else()
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# Otherwise find it manually
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find_path(EIGEN_IPATH
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NAMES signature_of_eigen3_matrix_library
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PATHS ${CMAKE_INSTALL_PREFIX}/include
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${KDE4_INCLUDE_DIR}
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PATH_SUFFIXES eigen3 eigen
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)
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# Checking to make sure it has the write version
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if(EIGEN_IPATH)
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_eigen_check_version()
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set(HAVE_EIGEN ${EIGEN_VERSION_OK})
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endif()
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mark_as_advanced(EIGEN_IPATH)
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endif()
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