source: pacpussensors/trunk/Vislab/lib3dv-1.2.0/cmake/FindEigen.cmake

Last change on this file was 136, checked in by ldecherf, 8 years ago

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1# - Try to find Eigen3 lib
2#
3# This module supports requiring a minimum version, e.g. you can do
4# find_package(Eigen3 3.1.2)
5# to require version 3.1.2 or newer of Eigen3.
6#
7# Once done this will define
8#
9# EIGEN_FOUND - system has eigen lib with correct version
10# EIGEN_INCLUDE_DIR - the eigen include directory
11# EIGEN_VERSION - eigen version
12
13# Copyright (c) 2006, 2007 Montel Laurent, <montel@kde.org>
14# Copyright (c) 2008, 2009 Gael Guennebaud, <g.gael@free.fr>
15# Copyright (c) 2009 Benoit Jacob <jacob.benoit.1@gmail.com>
16# Redistribution and use is allowed according to the terms of the 2-clause BSD license.
17
18if(NOT Eigen_FIND_VERSION)
19 if(NOT Eigen_FIND_VERSION_MAJOR)
20 set(Eigen_FIND_VERSION_MAJOR 2)
21 endif(NOT Eigen_FIND_VERSION_MAJOR)
22 if(NOT Eigen_FIND_VERSION_MINOR)
23 set(Eigen_FIND_VERSION_MINOR 91)
24 endif(NOT Eigen_FIND_VERSION_MINOR)
25 if(NOT Eigen_FIND_VERSION_PATCH)
26 set(Eigen_FIND_VERSION_PATCH 0)
27 endif(NOT Eigen_FIND_VERSION_PATCH)
28
29 set(Eigen_FIND_VERSION "${Eigen_FIND_VERSION_MAJOR}.${Eigen_FIND_VERSION_MINOR}.${Eigen_FIND_VERSION_PATCH}")
30endif(NOT Eigen_FIND_VERSION)
31
32macro(_eigen3_check_version)
33 file(READ "${EIGEN_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen3_version_header)
34
35 string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen3_world_version_match "${_eigen3_version_header}")
36 set(EIGEN_WORLD_VERSION "${CMAKE_MATCH_1}")
37 string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen3_major_version_match "${_eigen3_version_header}")
38 set(EIGEN_MAJOR_VERSION "${CMAKE_MATCH_1}")
39 string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen3_minor_version_match "${_eigen3_version_header}")
40 set(EIGEN_MINOR_VERSION "${CMAKE_MATCH_1}")
41
42 set(EIGEN_VERSION ${EIGEN_WORLD_VERSION}.${EIGEN_MAJOR_VERSION}.${EIGEN_MINOR_VERSION})
43 if(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
44 set(EIGEN_VERSION_OK FALSE)
45 else(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
46 set(EIGEN_VERSION_OK TRUE)
47 endif(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
48
49 if(NOT EIGEN_VERSION_OK)
50
51 message(STATUS "Eigen version ${EIGEN_VERSION} found in ${EIGEN_INCLUDE_DIR}, "
52 "but at least version ${Eigen_FIND_VERSION} is required")
53 endif(NOT EIGEN_VERSION_OK)
54endmacro(_eigen3_check_version)
55
56if (EIGEN_INCLUDE_DIRS)
57
58 # in cache already
59 _eigen3_check_version()
60 set(EIGEN_FOUND ${EIGEN_VERSION_OK})
61
62else ()
63
64 find_path(EIGEN_INCLUDE_DIR NAMES signature_of_eigen3_matrix_library
65 PATHS
66 ${CMAKE_INSTALL_PREFIX}/include
67 ${KDE4_INCLUDE_DIR}
68 PATH_SUFFIXES eigen3 eigen
69 )
70
71 if(EIGEN_INCLUDE_DIR)
72 _eigen3_check_version()
73 endif(EIGEN_INCLUDE_DIR)
74
75 include(FindPackageHandleStandardArgs)
76 find_package_handle_standard_args(Eigen DEFAULT_MSG EIGEN_INCLUDE_DIR EIGEN_VERSION_OK)
77
78 mark_as_advanced(EIGEN_INCLUDE_DIR)
79 SET(EIGEN_INCLUDE_DIRS ${EIGEN_INCLUDE_DIR} CACHE PATH "The Eigen include path.")
80
81endif()
82
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