cmake: add openkim build as external project

endif()

if(ENABLE_KIM)

  find_package(KIM REQUIRED)

  find_package(KIM QUIET)

  if(NOT KIM_FOUND)

    message(STATUS "KIM not found - we will build our own")

    include(ExternalProject)

    ExternalProject_Add(kim_build

      URL https://github.com/openkim/kim-api/archive/v1.9.3.tar.gz

      URL_MD5 86bb67622a09bcd45332c6506dc0ddd9

      BUILD_IN_SOURCE 1

      CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=<INSTALL_DIR>

      )

    ExternalProject_get_property(kim_build INSTALL_DIR)

    set(KIM_INCLUDE_DIRS ${INSTALL_DIR}/include/kim-api-v1)

    set(KIM_LIBRARIES ${INSTALL_DIR}/lib/libkim-api-v1.so)

    list(APPEND LAMMPS_DEPS kim_build)

  endif()

  list(APPEND LAMMPS_LINK_LIBS ${KIM_LIBRARIES})

  include_directories(${KIM_INCLUDE_DIRS})

endif()