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Restore EIGEN_INCLUDE_DIR in CMake again (for 3.4.x)

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Alexander Vieth 2025-08-18 19:53:08 +00:00 committed by Antonio Sánchez
parent eb57d4bdf1
commit cd7263e7f6
2 changed files with 20 additions and 1 deletions
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7
CMakeLists.txt
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@ -175,6 +175,9 @@ set ( EIGEN_VERSION_STRING ${EIGEN_VERSION_NUMBER} )
set ( EIGEN_VERSION_MAJOR ${EIGEN_WORLD_VERSION} ) set ( EIGEN_VERSION_MAJOR ${EIGEN_WORLD_VERSION} )
set ( EIGEN_VERSION_MINOR ${EIGEN_MAJOR_VERSION} ) set ( EIGEN_VERSION_MINOR ${EIGEN_MAJOR_VERSION} )
set ( EIGEN_VERSION_PATCH ${EIGEN_MINOR_VERSION} ) set ( EIGEN_VERSION_PATCH ${EIGEN_MINOR_VERSION} )
set ( EIGEN_DEFINITIONS "")
set ( EIGEN_INCLUDE_DIR "${CMAKE_INSTALL_PREFIX}/${INCLUDE_INSTALL_DIR}" )
set ( EIGEN_ROOT_DIR ${CMAKE_INSTALL_PREFIX} )
# Alias Eigen_*_DIR to Eigen3_*_DIR: # Alias Eigen_*_DIR to Eigen3_*_DIR:
set(Eigen_SOURCE_DIR ${Eigen3_SOURCE_DIR}) set(Eigen_SOURCE_DIR ${Eigen3_SOURCE_DIR})
@ -215,6 +218,7 @@ if(EIGEN_BUILD_CMAKE_PACKAGE)
configure_package_config_file ( configure_package_config_file (
${CMAKE_CURRENT_SOURCE_DIR}/cmake/Eigen3Config.cmake.in ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Eigen3Config.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake ${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake
PATH_VARS EIGEN_INCLUDE_DIR EIGEN_ROOT_DIR
INSTALL_DESTINATION ${CMAKEPACKAGE_INSTALL_DIR} INSTALL_DESTINATION ${CMAKEPACKAGE_INSTALL_DIR}
NO_SET_AND_CHECK_MACRO # Eigen does not provide legacy style defines NO_SET_AND_CHECK_MACRO # Eigen does not provide legacy style defines
NO_CHECK_REQUIRED_COMPONENTS_MACRO # Eigen does not provide components NO_CHECK_REQUIRED_COMPONENTS_MACRO # Eigen does not provide components
@ -249,7 +253,8 @@ if(EIGEN_BUILD_CMAKE_PACKAGE)
install (EXPORT Eigen3Targets NAMESPACE Eigen3:: DESTINATION ${CMAKEPACKAGE_INSTALL_DIR}) install (EXPORT Eigen3Targets NAMESPACE Eigen3:: DESTINATION ${CMAKEPACKAGE_INSTALL_DIR})
install (FILES ${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake install (FILES ${CMAKE_CURRENT_SOURCE_DIR}/cmake/UseEigen3.cmake
${CMAKE_CURRENT_BINARY_DIR}/Eigen3Config.cmake
${CMAKE_CURRENT_BINARY_DIR}/Eigen3ConfigVersion.cmake ${CMAKE_CURRENT_BINARY_DIR}/Eigen3ConfigVersion.cmake
DESTINATION ${CMAKEPACKAGE_INSTALL_DIR}) DESTINATION ${CMAKEPACKAGE_INSTALL_DIR})

14
cmake/UseEigen3.cmake
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@ -1,6 +1,20 @@
# -*- cmake -*- # -*- cmake -*-
# #
# UseEigen3.cmake # UseEigen3.cmake
#
# ----------------------------------------------------------------------
# This file provides legacy support for including Eigen in CMake.
# The modern and preferred way is to use:
#
# find_package (Eigen3 3.4 REQUIRED NO_MODULE)
# add_executable (example example.cpp)
# target_link_libraries (example Eigen3::Eigen)
#
# Use the commands below only if you must maintain compatibility
# with older CMake/Eigen projects.
# For more information:
# https://libeigen.gitlab.io/eigen/docs-3.4/TopicCMakeGuide.html
# ----------------------------------------------------------------------
add_definitions ( ${EIGEN3_DEFINITIONS} ) add_definitions ( ${EIGEN3_DEFINITIONS} )
include_directories ( ${EIGEN3_INCLUDE_DIRS} ) include_directories ( ${EIGEN3_INCLUDE_DIRS} )