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# update submodules automatically
OPTION(UPDATE_SUBMODULES "Update submodules automatically" ON)
IF(NOT UPDATE_SUBMODULES)
RETURN()
ENDIF()
IF(GIT_EXECUTABLE AND EXISTS "${CMAKE_SOURCE_DIR}/.git")
EXECUTE_PROCESS(COMMAND "${GIT_EXECUTABLE}" config --get cmake.update-submodules
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
OUTPUT_VARIABLE cmake_update_submodules
RESULT_VARIABLE git_config_get_result)
IF(cmake_update_submodules MATCHES no)
SET(update_result 0)
SET(SUBMODULE_UPDATE_CONFIG_MESSAGE
"\n\nTo update submodules automatically, set cmake.update-submodules to 'yes', or 'force' to update automatically:
${GIT_EXECUTABLE} config cmake.update-submodules yes")
ELSEIF(git_config_get_result EQUAL 128)
SET(update_result 0)
ELSE()
SET(UPDATE_SUBMODULES_COMMAND
"${GIT_EXECUTABLE}" submodule update --init --recursive)
# Old Git may not work with "--depth 1".
# See also: https://github.com/git/git/commit/fb43e31f2b43076e7a30c9cd00d0241cb8cf97eb
IF(NOT GIT_VERSION_STRING VERSION_LESS "2.8.0")
SET(UPDATE_SUBMODULES_COMMAND ${UPDATE_SUBMODULES_COMMAND} --depth 1)
ENDIF()
IF(cmake_update_submodules MATCHES force)
MESSAGE(STATUS "Updating submodules (forced)")
EXECUTE_PROCESS(COMMAND ${UPDATE_SUBMODULES_COMMAND} --force
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
RESULT_VARIABLE update_result)
ELSEIF(cmake_update_submodules MATCHES yes)
EXECUTE_PROCESS(COMMAND ${UPDATE_SUBMODULES_COMMAND}
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
RESULT_VARIABLE update_result)
ELSE()
MESSAGE(STATUS "Updating submodules")
EXECUTE_PROCESS(COMMAND ${UPDATE_SUBMODULES_COMMAND}
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
RESULT_VARIABLE update_result)
ENDIF()
ENDIF()
ENDIF()
IF(update_result OR NOT EXISTS ${CMAKE_SOURCE_DIR}/libmariadb/CMakeLists.txt)
MESSAGE(FATAL_ERROR "No MariaDB Connector/C! Run
${GIT_EXECUTABLE} submodule update --init --recursive
Then restart the build.${SUBMODULE_UPDATE_CONFIG_MESSAGE}")
ENDIF()
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