source: pacpussensors/trunk/Vislab/lib3dv-1.2.0/lib3dv/eigen/cmake/FindEigen2.cmake@ 139

Last change on this file since 139 was 136, checked in by ldecherf, 8 years ago

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1# - Try to find Eigen2 lib
2#
3# This module supports requiring a minimum version, e.g. you can do
4# find_package(Eigen2 2.0.3)
5# to require version 2.0.3 to newer of Eigen2.
6#
7# Once done this will define
8#
9# EIGEN2_FOUND - system has eigen lib with correct version
10# EIGEN2_INCLUDE_DIR - the eigen include directory
11# EIGEN2_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# Redistribution and use is allowed according to the terms of the BSD license.
16
17if(NOT Eigen2_FIND_VERSION)
18 if(NOT Eigen2_FIND_VERSION_MAJOR)
19 set(Eigen2_FIND_VERSION_MAJOR 2)
20 endif(NOT Eigen2_FIND_VERSION_MAJOR)
21 if(NOT Eigen2_FIND_VERSION_MINOR)
22 set(Eigen2_FIND_VERSION_MINOR 0)
23 endif(NOT Eigen2_FIND_VERSION_MINOR)
24 if(NOT Eigen2_FIND_VERSION_PATCH)
25 set(Eigen2_FIND_VERSION_PATCH 0)
26 endif(NOT Eigen2_FIND_VERSION_PATCH)
27
28 set(Eigen2_FIND_VERSION "${Eigen2_FIND_VERSION_MAJOR}.${Eigen2_FIND_VERSION_MINOR}.${Eigen2_FIND_VERSION_PATCH}")
29endif(NOT Eigen2_FIND_VERSION)
30
31macro(_eigen2_check_version)
32 file(READ "${EIGEN2_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen2_version_header)
33
34 string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen2_world_version_match "${_eigen2_version_header}")
35 set(EIGEN2_WORLD_VERSION "${CMAKE_MATCH_1}")
36 string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen2_major_version_match "${_eigen2_version_header}")
37 set(EIGEN2_MAJOR_VERSION "${CMAKE_MATCH_1}")
38 string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen2_minor_version_match "${_eigen2_version_header}")
39 set(EIGEN2_MINOR_VERSION "${CMAKE_MATCH_1}")
40
41 set(EIGEN2_VERSION ${EIGEN2_WORLD_VERSION}.${EIGEN2_MAJOR_VERSION}.${EIGEN2_MINOR_VERSION})
42 if((${EIGEN2_WORLD_VERSION} NOTEQUAL 2) OR (${EIGEN2_MAJOR_VERSION} GREATER 10) OR (${EIGEN2_VERSION} VERSION_LESS ${Eigen2_FIND_VERSION}))
43 set(EIGEN2_VERSION_OK FALSE)
44 else()
45 set(EIGEN2_VERSION_OK TRUE)
46 endif()
47
48 if(NOT EIGEN2_VERSION_OK)
49
50 message(STATUS "Eigen2 version ${EIGEN2_VERSION} found in ${EIGEN2_INCLUDE_DIR}, "
51 "but at least version ${Eigen2_FIND_VERSION} is required")
52 endif(NOT EIGEN2_VERSION_OK)
53endmacro(_eigen2_check_version)
54
55if (EIGEN2_INCLUDE_DIR)
56
57 # in cache already
58 _eigen2_check_version()
59 set(EIGEN2_FOUND ${EIGEN2_VERSION_OK})
60
61else (EIGEN2_INCLUDE_DIR)
62
63find_path(EIGEN2_INCLUDE_DIR NAMES Eigen/Core
64 PATHS
65 ${INCLUDE_INSTALL_DIR}
66 ${KDE4_INCLUDE_DIR}
67 PATH_SUFFIXES eigen2
68 )
69
70if(EIGEN2_INCLUDE_DIR)
71 _eigen2_check_version()
72endif(EIGEN2_INCLUDE_DIR)
73
74include(FindPackageHandleStandardArgs)
75find_package_handle_standard_args(Eigen2 DEFAULT_MSG EIGEN2_INCLUDE_DIR EIGEN2_VERSION_OK)
76
77mark_as_advanced(EIGEN2_INCLUDE_DIR)
78
79endif(EIGEN2_INCLUDE_DIR)
80
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