3D-Eye-Tracker/cmake/FindEigen.cmake
2016-10-07 13:31:30 +09:00

100 lines
3.4 KiB
CMake

# - Try to find Eigen lib
#
# This module supports requiring a minimum version, e.g. you can do
# find_package(Eigen 3.1.2)
# to require version 3.1.2 or newer of Eigen.
#
# Once done this will define
#
# EIGEN_FOUND - system has eigen lib with correct version
# EIGEN_INCLUDE_DIR - the eigen include directory
# EIGEN_VERSION - eigen version
# Copyright (c) 2006, 2007 Montel Laurent, <montel@kde.org>
# Copyright (c) 2008, 2009 Gael Guennebaud, <g.gael@free.fr>
# Copyright (c) 2009 Benoit Jacob <jacob.benoit.1@gmail.com>
# Copyright (c) 2014 Lech Swirski <leszek@swirski.co.uk>
# Redistribution and use is allowed according to the terms of the 2-clause BSD license.
if(NOT Eigen_FIND_VERSION)
if(NOT Eigen_FIND_VERSION_MAJOR)
set(Eigen_FIND_VERSION_MAJOR 3)
endif(NOT Eigen_FIND_VERSION_MAJOR)
if(NOT Eigen_FIND_VERSION_MINOR)
set(Eigen_FIND_VERSION_MINOR 0)
endif(NOT Eigen_FIND_VERSION_MINOR)
if(NOT Eigen_FIND_VERSION_PATCH)
set(Eigen_FIND_VERSION_PATCH 0)
endif(NOT Eigen_FIND_VERSION_PATCH)
set(Eigen_FIND_VERSION "${Eigen_FIND_VERSION_MAJOR}.${Eigen_FIND_VERSION_MINOR}.${Eigen_FIND_VERSION_PATCH}")
endif(NOT Eigen_FIND_VERSION)
macro(_eigen_check_version)
find_file(_macros_header "Macros.h"
HINTS ${EIGEN_INCLUDE_DIR}
PATH_SUFFIXES "Eigen/src/Core/util" "src/Core/util")
message(STATUS "Found Eigen header: ${_macros_header}")
file(READ ${_macros_header} _eigen_version_header)
string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen_world_version_match "${_eigen_version_header}")
set(EIGEN_WORLD_VERSION "${CMAKE_MATCH_1}")
string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen_major_version_match "${_eigen_version_header}")
set(EIGEN_MAJOR_VERSION "${CMAKE_MATCH_1}")
string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen_minor_version_match "${_eigen_version_header}")
set(EIGEN_MINOR_VERSION "${CMAKE_MATCH_1}")
set(EIGEN_VERSION ${EIGEN_WORLD_VERSION}.${EIGEN_MAJOR_VERSION}.${EIGEN_MINOR_VERSION})
if(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
set(EIGEN_VERSION_OK FALSE)
else(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
set(EIGEN_VERSION_OK TRUE)
endif(${EIGEN_VERSION} VERSION_LESS ${Eigen_FIND_VERSION})
if(NOT EIGEN_VERSION_OK)
message(STATUS "Eigen version ${EIGEN_VERSION} found in ${EIGEN_INCLUDE_DIR}, "
"but at least version ${Eigen_FIND_VERSION} is required")
endif(NOT EIGEN_VERSION_OK)
endmacro(_eigen_check_version)
if (EIGEN_INCLUDE_DIR)
# in cache already
_eigen_check_version()
set(EIGEN_FOUND ${EIGEN_VERSION_OK})
else (EIGEN_INCLUDE_DIR)
find_path(EIGEN_INCLUDE_DIR NAMES signature_of_eigen3_matrix_library
PATHS
${CMAKE_INSTALL_PREFIX}/include
${KDE4_INCLUDE_DIR}
/usr/local/include
/usr/local/homebrew/include # Mac OS X
/opt/local/var/macports/software # Mac OS X.
/opt/local/include
/usr/include
$ENV{PROGRAMFILES}
$ENV{PROGRAMFILES}/Eigen/include
$ENV{PROGRAMW6432}
$ENV{PROGRAMW6432}/Eigen/include
PATH_SUFFIXES eigen eigen3
)
if(EIGEN_INCLUDE_DIR)
_eigen_check_version()
endif(EIGEN_INCLUDE_DIR)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Eigen DEFAULT_MSG EIGEN_INCLUDE_DIR EIGEN_VERSION_OK)
mark_as_advanced(EIGEN_INCLUDE_DIR)
endif(EIGEN_INCLUDE_DIR)