netgen/cmake/check_submodules.cmake

execute_process(COMMAND git submodule status --recursive WORKING_DIRECTORY "${CMAKE_CURRENT_LIST_DIR}/../" OUTPUT_VARIABLE git_status_output)
string(REPLACE "\n" ";" git_status_output "${git_status_output}")
foreach( a ${git_status_output})
  if(NOT ${a} MATCHES " [a-f,0-9]* external_dependencies[.]*")
    message(WARNING
"*****************************************************************
      WARNING: The git submodules are out of sync! Please run
      git submodule update --init --recursive
      in your source directory
*****************************************************************")
  endif()
endforeach()
Force rebuild of Netgen subproject when building the Superbuild CMake is using stamp files to check if the external projects are out of date. There is an option 'BUILD_ALWAYS 1' of ExternalProject_Add, but it is not available prior to CMake 3.1. To work around it, this commit solves two problems at once: - Add a new step 'check_submodules' between configure and build to check if all submodules are up to date. This step has the option 'ALWAYS 1', which means it is always considered outdated. - Since 'build' depends on the above step, it will always be started 2017-01-20 14:16:48 +05:00			`execute_process(COMMAND git submodule status --recursive WORKING_DIRECTORY "${CMAKE_CURRENT_LIST_DIR}/../" OUTPUT_VARIABLE git_status_output)`
			`string(REPLACE "\n" ";" git_status_output "${git_status_output}")`
			`foreach( a ${git_status_output})`
			`if(NOT ${a} MATCHES " [a-f,0-9]* external_dependencies[.]*")`
			`message(WARNING`
			`"*****************************************************************`
			`WARNING: The git submodules are out of sync! Please run`
			`git submodule update --init --recursive`
			`in your source directory`
			`*****************************************************************")`
			`endif()`
			`endforeach()`