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Add a check for project submodules. #2329

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merged 1 commit into from
Jan 9, 2021
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Add a check for project submodules. #2329

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23 changes: 23 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,29 @@ endmacro()
# Save the old value of CMAKE_REQUIRED_FLAGS
set( TEMP_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} )

# Check submodules
if(NOT MANUAL_SUBMODULES)
find_package(Git)
if(GIT_FOUND)
function (check_submodule relative_path)
execute_process(COMMAND git rev-parse "HEAD" WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/${relative_path} OUTPUT_VARIABLE localHead)
execute_process(COMMAND git rev-parse "HEAD:${relative_path}" WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} OUTPUT_VARIABLE checkedHead)
string(COMPARE EQUAL "${localHead}" "${checkedHead}" upToDate)
if (upToDate)
message(STATUS "Submodule '${relative_path}' is up-to-date")
else()
message(FATAL_ERROR "Submodule '${relative_path}' is not up-to-date. Please update all submodules with\ngit submodule update --init --recursive --force\nor run cmake with -DMANUAL_SUBMODULES=1\n")
endif()
endfunction ()

message(STATUS "Checking submodules")
check_submodule(docs)
check_submodule(libraries/fc)
endif()
endif()
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# Make sure to always re-run the test.
unset( MANUAL_SUBMODULES CACHE )

# Fortify source
if (CMAKE_COMPILER_IS_GNUCXX)
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
Expand Down