cmake/PackageConfig.cmake

# This cmake code creates the configuration that is found and used by
# find_package() of another cmake project

# get lower and upper case project name for the configuration files

# configure and install the configuration files
include(CMakePackageConfigHelpers)

configure_package_config_file(
  "${PROJECT_SOURCE_DIR}/cmake/project-config.cmake.in"
  "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
  INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
  #PATH_VARS CMAKE_INSTALL_DIR
)

write_basic_package_version_file(
  "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake"
  VERSION ${PROJECT_VERSION}
  COMPATIBILITY SameMinorVersion
)

install(FILES
  "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
  "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake"
  COMPONENT devel
  DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
)

if (PROJECT_LIBRARIES OR PROJECT_STATIC_LIBRARIES)
  install(
    EXPORT "${TARGETS_EXPORT_NAME}"
    FILE ${TARGETS_EXPORT_NAME}.cmake
    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
  )
endif ()