diff --git a/cmake/AkantuBuildTreeSettings.cmake.in b/cmake/AkantuBuildTreeSettings.cmake.in
index 10bda8f9b..a7fdc5a97 100644
--- a/cmake/AkantuBuildTreeSettings.cmake.in
+++ b/cmake/AkantuBuildTreeSettings.cmake.in
@@ -1,37 +1,27 @@
 #===============================================================================
-# @file   AkantuBuildTreeSettings.cmake.in
-#
-# @author Nicolas Richart <nicolas.richart@epfl.ch>
-#
-# @date creation: Thu Dec 01 2011
-# @date last modification: Sun Oct 19 2014
-#
-# @brief  Configuration for link with build tree
-#
-# @section LICENSE
-#
-# Copyright (©)  2010-2012, 2014,  2015 EPFL  (Ecole Polytechnique  Fédérale de
+# Copyright (©)  2011-2023 EPFL  (Ecole Polytechnique  Fédérale de
 # Lausanne)  Laboratory (LSMS  -  Laboratoire de  Simulation  en Mécanique  des
 # Solides)
 #
+# This file is part of Akantu
+#
 # Akantu is free  software: you can redistribute it and/or  modify it under the
 # terms  of the  GNU Lesser  General Public  License as  published by  the Free
 # Software Foundation, either version 3 of the License, or (at your option) any
 # later version.
 #
 # Akantu is  distributed in the  hope that it  will be useful, but  WITHOUT ANY
 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 # A  PARTICULAR PURPOSE. See  the GNU  Lesser General  Public License  for more
 # details.
 #
 # You should  have received  a copy  of the GNU  Lesser General  Public License
 # along with Akantu. If not, see <http://www.gnu.org/licenses/>.
-#
 #===============================================================================
 
 set(AKANTU_INCLUDE_DIRS
   "@AKANTU_INCLUDE_DIRS@"
   )
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "@CMAKE_SOURCE_DIR@/cmake")
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "@CMAKE_SOURCE_DIR@/cmake/Modules")
diff --git a/cmake/AkantuConfig.cmake.in b/cmake/AkantuConfig.cmake.in
index 99d9212f5..d90829b65 100644
--- a/cmake/AkantuConfig.cmake.in
+++ b/cmake/AkantuConfig.cmake.in
@@ -1,69 +1,71 @@
 #===============================================================================
 # @file   AkantuConfig.cmake.in
 #
 # @author Nicolas Richart <nicolas.richart@epfl.ch>
 #
 # @date creation: Thu Dec 01 2011
 # @date last modification: Mon Jan 18 2016
 #
 # @brief  CMake file for the library
 #
 # @section LICENSE
 #
 # Copyright (©)  2010-2012, 2014,  2015 EPFL  (Ecole Polytechnique  Fédérale de
 # Lausanne)  Laboratory (LSMS  -  Laboratoire de  Simulation  en Mécanique  des
 # Solides)
 #
 # Akantu is free  software: you can redistribute it and/or  modify it under the
 # terms  of the  GNU Lesser  General Public  License as  published by  the Free
 # Software Foundation, either version 3 of the License, or (at your option) any
 # later version.
 #
 # Akantu is  distributed in the  hope that it  will be useful, but  WITHOUT ANY
 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 # A  PARTICULAR PURPOSE. See  the GNU  Lesser General  Public License  for more
 # details.
 #
 # You should  have received  a copy  of the GNU  Lesser General  Public License
 # along with Akantu. If not, see <http://www.gnu.org/licenses/>.
 #
 #===============================================================================
 set(AKANTU_VERSION @AKANTU_SEMVER@)
 
 @PACKAGE_INIT@
 
 # Compute paths
 get_filename_component(AKANTU_CMAKE_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
 
 set(AKANTU_USE_FILE "${AKANTU_CMAKE_DIR}/AkantuUse.cmake")
 include(${AKANTU_USE_FILE})
 
 if(EXISTS "${AKANTU_CMAKE_DIR}/CMakeCache.txt")
   # In build tree
   include("${AKANTU_CMAKE_DIR}/AkantuBuildTreeSettings.cmake")
   include(AkantuSimulationMacros)
 else()
   # In install tree
   set(AKANTU_INCLUDE_DIRS "@CMAKE_INSTALL_PREFIX@/include/akantu")
   set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${AKANTU_CMAKE_DIR}")
   include(AkantuSimulationMacros)
 endif()
 
+find_package(Eigen3 REQUIRED QUIET)
+
 # Akantu exported targets
 include("${AKANTU_CMAKE_DIR}/AkantuTargets.cmake")
 
 # Dependencies
 include("${AKANTU_CMAKE_DIR}/AkantuConfigInclude.cmake")
 
 set(AKANTU_BUILD_TYPE @CMAKE_BUILD_TYPE@)
 
 # find_akantu_dependencies()
 set(AKANTU_LIBRARY akantu)
 
 set(_akantu_libraries ${AKANTU_LIBRARIES})
 list(APPEND _akantu_libraries ${AKANTU_LIBRARY} ${AKANTU_EXTRA_LIBRARIES})
 list(APPEND AKANTU_INCLUDE_DIRS ${AKANTU_EXTRA_INCLUDE_DIR})
 
 set(AKANTU_LIBRARIES ${_akantu_libraries} CACHE INTERNAL "List of akantu necessary libraries" FORCE)
 
 check_required_components(Akantu)