cmake_minimum_required(VERSION 3.0.0) project(eigen-external) include(ExternalProject) ExternalProject_Add(eigen GIT_REPOSITORY https://gitlab.com/libeigen/eigen.git GIT_TAG 3.3.4 SOURCE_DIR "${PROJECT_SOURCE_DIR}/externals/eigen/eigen3" CONFIGURE_COMMAND "" BUILD_COMMAND "" INSTALL_COMMAND "" TEST_COMMAND "" UPDATE_DISCONNECTED ON )