Wenzel Jakob | 9e0a056 | 2016-05-05 20:33:54 +0200 | [diff] [blame] | 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 | # EIGEN3_FOUND - system has eigen lib with correct version |
| 10 | # EIGEN3_INCLUDE_DIR - the eigen include directory |
| 11 | # EIGEN3_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 | |
| 18 | if(NOT Eigen3_FIND_VERSION) |
| 19 | if(NOT Eigen3_FIND_VERSION_MAJOR) |
| 20 | set(Eigen3_FIND_VERSION_MAJOR 2) |
| 21 | endif(NOT Eigen3_FIND_VERSION_MAJOR) |
| 22 | if(NOT Eigen3_FIND_VERSION_MINOR) |
| 23 | set(Eigen3_FIND_VERSION_MINOR 91) |
| 24 | endif(NOT Eigen3_FIND_VERSION_MINOR) |
| 25 | if(NOT Eigen3_FIND_VERSION_PATCH) |
| 26 | set(Eigen3_FIND_VERSION_PATCH 0) |
| 27 | endif(NOT Eigen3_FIND_VERSION_PATCH) |
| 28 | |
Henry Schreiner | 94db5c5 | 2020-07-30 16:20:10 -0400 | [diff] [blame] | 29 | set(Eigen3_FIND_VERSION |
| 30 | "${Eigen3_FIND_VERSION_MAJOR}.${Eigen3_FIND_VERSION_MINOR}.${Eigen3_FIND_VERSION_PATCH}") |
Wenzel Jakob | 9e0a056 | 2016-05-05 20:33:54 +0200 | [diff] [blame] | 31 | endif(NOT Eigen3_FIND_VERSION) |
| 32 | |
| 33 | macro(_eigen3_check_version) |
| 34 | file(READ "${EIGEN3_INCLUDE_DIR}/Eigen/src/Core/util/Macros.h" _eigen3_version_header) |
| 35 | |
Henry Schreiner | 94db5c5 | 2020-07-30 16:20:10 -0400 | [diff] [blame] | 36 | string(REGEX MATCH "define[ \t]+EIGEN_WORLD_VERSION[ \t]+([0-9]+)" _eigen3_world_version_match |
| 37 | "${_eigen3_version_header}") |
Wenzel Jakob | 9e0a056 | 2016-05-05 20:33:54 +0200 | [diff] [blame] | 38 | set(EIGEN3_WORLD_VERSION "${CMAKE_MATCH_1}") |
Henry Schreiner | 94db5c5 | 2020-07-30 16:20:10 -0400 | [diff] [blame] | 39 | string(REGEX MATCH "define[ \t]+EIGEN_MAJOR_VERSION[ \t]+([0-9]+)" _eigen3_major_version_match |
| 40 | "${_eigen3_version_header}") |
Wenzel Jakob | 9e0a056 | 2016-05-05 20:33:54 +0200 | [diff] [blame] | 41 | set(EIGEN3_MAJOR_VERSION "${CMAKE_MATCH_1}") |
Henry Schreiner | 94db5c5 | 2020-07-30 16:20:10 -0400 | [diff] [blame] | 42 | string(REGEX MATCH "define[ \t]+EIGEN_MINOR_VERSION[ \t]+([0-9]+)" _eigen3_minor_version_match |
| 43 | "${_eigen3_version_header}") |
Wenzel Jakob | 9e0a056 | 2016-05-05 20:33:54 +0200 | [diff] [blame] | 44 | set(EIGEN3_MINOR_VERSION "${CMAKE_MATCH_1}") |
| 45 | |
| 46 | set(EIGEN3_VERSION ${EIGEN3_WORLD_VERSION}.${EIGEN3_MAJOR_VERSION}.${EIGEN3_MINOR_VERSION}) |
| 47 | if(${EIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION}) |
| 48 | set(EIGEN3_VERSION_OK FALSE) |
| 49 | else(${EIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION}) |
| 50 | set(EIGEN3_VERSION_OK TRUE) |
| 51 | endif(${EIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION}) |
| 52 | |
| 53 | if(NOT EIGEN3_VERSION_OK) |
| 54 | |
| 55 | message(STATUS "Eigen3 version ${EIGEN3_VERSION} found in ${EIGEN3_INCLUDE_DIR}, " |
| 56 | "but at least version ${Eigen3_FIND_VERSION} is required") |
| 57 | endif(NOT EIGEN3_VERSION_OK) |
| 58 | endmacro(_eigen3_check_version) |
| 59 | |
Henry Schreiner | 94db5c5 | 2020-07-30 16:20:10 -0400 | [diff] [blame] | 60 | if(EIGEN3_INCLUDE_DIR) |
Wenzel Jakob | 9e0a056 | 2016-05-05 20:33:54 +0200 | [diff] [blame] | 61 | |
| 62 | # in cache already |
| 63 | _eigen3_check_version() |
| 64 | set(EIGEN3_FOUND ${EIGEN3_VERSION_OK}) |
| 65 | |
Henry Schreiner | 94db5c5 | 2020-07-30 16:20:10 -0400 | [diff] [blame] | 66 | else(EIGEN3_INCLUDE_DIR) |
Henry Schreiner | eb83fee | 2021-01-19 18:48:22 -0500 | [diff] [blame] | 67 | if(NOT DEFINED KDE4_INCLUDE_DIR) |
| 68 | set(KDE4_INCLUDE_DIR "") |
| 69 | endif() |
Wenzel Jakob | 9e0a056 | 2016-05-05 20:33:54 +0200 | [diff] [blame] | 70 | |
Henry Schreiner | 94db5c5 | 2020-07-30 16:20:10 -0400 | [diff] [blame] | 71 | find_path( |
| 72 | EIGEN3_INCLUDE_DIR |
| 73 | NAMES signature_of_eigen3_matrix_library |
| 74 | PATHS ${CMAKE_INSTALL_PREFIX}/include ${KDE4_INCLUDE_DIR} |
| 75 | PATH_SUFFIXES eigen3 eigen) |
Wenzel Jakob | 9e0a056 | 2016-05-05 20:33:54 +0200 | [diff] [blame] | 76 | |
| 77 | if(EIGEN3_INCLUDE_DIR) |
| 78 | _eigen3_check_version() |
| 79 | endif(EIGEN3_INCLUDE_DIR) |
| 80 | |
| 81 | include(FindPackageHandleStandardArgs) |
| 82 | find_package_handle_standard_args(Eigen3 DEFAULT_MSG EIGEN3_INCLUDE_DIR EIGEN3_VERSION_OK) |
| 83 | |
| 84 | mark_as_advanced(EIGEN3_INCLUDE_DIR) |
| 85 | |
| 86 | endif(EIGEN3_INCLUDE_DIR) |