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| author |  Gael Guennebaud <g.gael@free.fr> | 2009-05-20 00:04:08 +0200 |
|---|---|---|
| committer | Gael Guennebaud <g.gael@free.fr> | 2009-05-20 00:04:08 +0200 |
| commit | 56aad5aafb84b87c9cdf8a237a3d7fdf632b2021 (patch) | |
| tree | d12d19c07fc314efa081eef8205d35b958bc4f2b /cmake/FindEigen2.cmake | |
| parent | b83d9b48fa07653ffaabf37eadf8fc5f01fc1da0 (diff) | |
* add a FindEigen2.cmake file for reference
* parse the version number from the Macro.h header file
Diffstat (limited to 'cmake/FindEigen2.cmake')
| -rw-r--r-- | cmake/FindEigen2.cmake | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/cmake/FindEigen2.cmake b/cmake/FindEigen2.cmake new file mode 100644 index 000000000..f2f7f6eda --- /dev/null +++ b/cmake/FindEigen2.cmake @@ -0,0 +1,73 @@ +# - Try to find Eigen2 lib +# 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. + +include(MacroEnsureVersion) + +if(NOT EIGEN2_MIN_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_MIN_VERSION "${Eigen2_FIND_VERSION_MAJOR}.${Eigen2_FIND_VERSION_MINOR}.${Eigen2_FIND_VERSION_PATCH}") +endif(NOT EIGEN2_MIN_VERSION) + +macro(_eigen2_check_version) + file(READ "${EIGEN2_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen2_version_header LIMIT 5000 OFFSET 1000) + + string(REGEX MATCH "define *EIGEN_WORLD_VERSION ([0-9]*)" _eigen2_world_version_match "${_eigen2_version_header}") + set(EIGEN2_WORLD_VERSION "${CMAKE_MATCH_1}") + string(REGEX MATCH "define *EIGEN_MAJOR_VERSION ([0-9]*)" _eigen2_major_version_match "${_eigen2_version_header}") + set(EIGEN2_MAJOR_VERSION "${CMAKE_MATCH_1}") + string(REGEX MATCH "define *EIGEN_MINOR_VERSION ([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}) + MACRO_ENSURE_VERSION( ${EIGEN2_MIN_VERSION} ${EIGEN2_VERSION} EIGEN2_VERSION_OK) + + if(NOT EIGEN2_VERSION_OK) + + message(STATUS "Eigen2 version ${EIGEN2_VERSION} found in ${EIGEN2_INCLUDE_DIR}, " + "but at least version ${EIGEN2_MIN_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) + |