# SPDX-License-Identifier: MPL-2.0
#
# Minimal CMake config for the vendored Eigen 3.4.0 headers.
#
# The Eigen 3.4.0 release does not ship pre-generated Eigen3Config.cmake /
# Eigen3Targets.cmake (those only appear in distro packages), so provide the
# Eigen3::Eigen interface target here for
#   find_package(Eigen3 REQUIRED NO_MODULE)
# consumers (libCZI, with LIBCZI_BUILD_PREFER_EXTERNALPACKAGE_EIGEN3=ON).
if(NOT TARGET Eigen3::Eigen)
  get_filename_component(_eigen3_root "${CMAKE_CURRENT_LIST_DIR}" ABSOLUTE)
  add_library(Eigen3::Eigen INTERFACE IMPORTED GLOBAL)
  set_target_properties(Eigen3::Eigen PROPERTIES
    INTERFACE_INCLUDE_DIRECTORIES "${_eigen3_root}")
  set(EIGEN3_INCLUDE_DIR "${_eigen3_root}")
endif()