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* add a FindEigen2.cmake file for reference

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* parse the version number from the Macro.h header file
This commit is contained in:
Gael Guennebaud 2009-05-20 00:04:08 +02:00
parent b83d9b48fa
commit 56aad5aafb
2 changed files with 94 additions and 11 deletions
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32
CMakeLists.txt
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@ -1,19 +1,29 @@
project(Eigen)
set(EIGEN_VERSION_NUMBER "2.0.52-unstable")
#if the svnversion program is absent, this will leave the SVN_REVISION string empty,
#but won't stop CMake.
execute_process(COMMAND svnversion -n ${CMAKE_SOURCE_DIR}
OUTPUT_VARIABLE EIGEN_SVNVERSION_OUTPUT)
# automatically parse the version number
file(READ "${CMAKE_SOURCE_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}")
# TODO find a way to automatically remove the unstable suffix
set(EIGEN_VERSION_NUMBER ${EIGEN2_WORLD_VERSION}.${EIGEN2_MAJOR_VERSION}.${EIGEN2_MINOR_VERSION}-unstable)
#we only want EIGEN_SVN_REVISION if it is an actual revision number, not a string like "exported"
string(REGEX MATCH "^[0-9]+.*" EIGEN_SVN_REVISION "${EIGEN_SVNVERSION_OUTPUT}")
# if the mercurial program is absent, this will leave the EIGEN_HG_REVISION string empty,
# but won't stop CMake.
execute_process(COMMAND hg tip -R ${CMAKE_SOURCE_DIR} OUTPUT_VARIABLE EIGEN_HGTIP_OUTPUT)
if(EIGEN_SVN_REVISION)
set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER} (SVN revision ${EIGEN_SVN_REVISION})")
else(EIGEN_SVN_REVISION)
# extract the mercurial revision number from the hg tip output
string(REGEX MATCH "^changeset: *[0-9]*:([0-9;a-f]+).*" EIGEN_HG_REVISION_MATCH "${EIGEN_HGTIP_OUTPUT}")
set(EIGEN_HG_REVISION "${CMAKE_MATCH_1}")
if(EIGEN_HG_REVISION)
set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER} (mercurial revision ${EIGEN_HG_REVISION})")
else(EIGEN_HG_REVISION)
set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER}")
endif(EIGEN_SVN_REVISION)
endif(EIGEN_HG_REVISION)
cmake_minimum_required(VERSION 2.6.2)

73
cmake/FindEigen2.cmake Normal file
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@ -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)