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Diffstat (limited to 'cmake/FindEigen2.cmake')
-rw-r--r-- | cmake/FindEigen2.cmake | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/cmake/FindEigen2.cmake b/cmake/FindEigen2.cmake new file mode 100644 index 000000000..a834b8872 --- /dev/null +++ b/cmake/FindEigen2.cmake @@ -0,0 +1,80 @@ +# - Try to find Eigen2 lib +# +# This module supports requiring a minimum version, e.g. you can do +# find_package(Eigen2 2.0.3) +# to require version 2.0.3 to newer of Eigen2. +# +# Once done this will define +# +# EIGEN2_FOUND - system has eigen lib with correct version +# EIGEN2_INCLUDE_DIR - the eigen include directory +# EIGEN2_VERSION - eigen version + +# Copyright (c) 2006, 2007 Montel Laurent, <montel@kde.org> +# Copyright (c) 2008, 2009 Gael Guennebaud, <g.gael@free.fr> +# Redistribution and use is allowed according to the terms of the BSD license. + +if(NOT Eigen2_FIND_VERSION) + if(NOT Eigen2_FIND_VERSION_MAJOR) + set(Eigen2_FIND_VERSION_MAJOR 2) + endif(NOT Eigen2_FIND_VERSION_MAJOR) + if(NOT Eigen2_FIND_VERSION_MINOR) + set(Eigen2_FIND_VERSION_MINOR 0) + endif(NOT Eigen2_FIND_VERSION_MINOR) + if(NOT Eigen2_FIND_VERSION_PATCH) + set(Eigen2_FIND_VERSION_PATCH 0) + endif(NOT Eigen2_FIND_VERSION_PATCH) + + set(Eigen2_FIND_VERSION "${Eigen2_FIND_VERSION_MAJOR}.${Eigen2_FIND_VERSION_MINOR}.${Eigen2_FIND_VERSION_PATCH}") +endif(NOT Eigen2_FIND_VERSION) + +macro(_eigen2_check_version) + file(READ "${EIGEN2_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen2_version_header) + + string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen2_world_version_match "${_eigen2_version_header}") + set(EIGEN2_WORLD_VERSION "${CMAKE_MATCH_1}") + string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen2_major_version_match "${_eigen2_version_header}") + set(EIGEN2_MAJOR_VERSION "${CMAKE_MATCH_1}") + string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen2_minor_version_match "${_eigen2_version_header}") + set(EIGEN2_MINOR_VERSION "${CMAKE_MATCH_1}") + + set(EIGEN2_VERSION ${EIGEN2_WORLD_VERSION}.${EIGEN2_MAJOR_VERSION}.${EIGEN2_MINOR_VERSION}) + if((${EIGEN2_WORLD_VERSION} NOTEQUAL 2) OR (${EIGEN2_MAJOR_VERSION} GREATER 10) OR (${EIGEN2_VERSION} VERSION_LESS ${Eigen2_FIND_VERSION})) + set(EIGEN2_VERSION_OK FALSE) + else() + set(EIGEN2_VERSION_OK TRUE) + endif() + + if(NOT EIGEN2_VERSION_OK) + + message(STATUS "Eigen2 version ${EIGEN2_VERSION} found in ${EIGEN2_INCLUDE_DIR}, " + "but at least version ${Eigen2_FIND_VERSION} is required") + endif(NOT EIGEN2_VERSION_OK) +endmacro(_eigen2_check_version) + +if (EIGEN2_INCLUDE_DIR) + + # in cache already + _eigen2_check_version() + set(EIGEN2_FOUND ${EIGEN2_VERSION_OK}) + +else (EIGEN2_INCLUDE_DIR) + +find_path(EIGEN2_INCLUDE_DIR NAMES Eigen/Core + PATHS + ${INCLUDE_INSTALL_DIR} + ${KDE4_INCLUDE_DIR} + PATH_SUFFIXES eigen2 + ) + +if(EIGEN2_INCLUDE_DIR) + _eigen2_check_version() +endif(EIGEN2_INCLUDE_DIR) + +include(FindPackageHandleStandardArgs) +find_package_handle_standard_args(Eigen2 DEFAULT_MSG EIGEN2_INCLUDE_DIR EIGEN2_VERSION_OK) + +mark_as_advanced(EIGEN2_INCLUDE_DIR) + +endif(EIGEN2_INCLUDE_DIR) + |