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Force rebuild of Netgen subproject when building the Superbuild

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CMake is using stamp files to check if the external projects are out
of date.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  'ALWAYS 1', which means it is always considered outdated.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
This commit is contained in:
Matthias Hochsteger 2017-01-20 10:16:48 +01:00
parent 0c98422172
commit cb8bef9423
2 changed files with 31 additions and 0 deletions
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18
cmake_modules/SuperBuild.cmake
View File

@ -79,6 +79,7 @@ endif(NOT WIN32)
if (USE_PYTHON)
find_path(PYBIND_INCLUDE_DIR pybind11/pybind11.h PATHS ${CMAKE_CURRENT_SOURCE_DIR}/external_dependencies/pybind11/include NO_DEFAULT_PATH)
if( NOT PYBIND_INCLUDE_DIR )
# if the pybind submodule is missing, try to initialize and update all submodules
execute_process(COMMAND git submodule update --init --recursive WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
find_path(PYBIND_INCLUDE_DIR pybind11/pybind11.h ${CMAKE_CURRENT_SOURCE_DIR}/external_dependencies/pybind11/include)
endif( NOT PYBIND_INCLUDE_DIR )
@ -151,6 +152,23 @@ ExternalProject_Add (netgen
STEP_TARGETS build
)
# Check if the git submodules (i.e. pybind11) are up to date
# in case, something is wrong, emit a warning but continue
ExternalProject_Add_Step(netgen check_submodules
COMMAND cmake -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake_modules/check_submodules.cmake
DEPENDERS install # Steps on which this step depends
)
# Due to 'ALWAYS 1', this step is always run which also forces a build of
# the Netgen subproject
ExternalProject_Add_Step(netgen check_submodules1
COMMAND cmake -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake_modules/check_submodules.cmake
DEPENDEES configure # Steps on which this step depends
DEPENDERS build # Steps that depend on this step
ALWAYS 1 # No stamp file, step always runs
)
install(CODE "execute_process(COMMAND cmake --build . --target install --config ${CMAKE_BUILD_TYPE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/netgen)")
add_custom_target(test_netgen

13
cmake_modules/check_submodules.cmake Normal file
View File

@ -0,0 +1,13 @@
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()