/ljc/VTSWriter/src/manual_test/test.cpp:20
```
Thanks you for your reply!
---
### Author:  [@mwestphal](https://discourse.vtk.org/u/mwestphal)
#### Post date: [July 15, 2024, 12:46pm UTC](https://discourse.vtk.org/t/segmentation-fault-happens-in-vtkalgorithm-update-when-calling-vtkxmlpstructuredgridwriter-update/14236/2 "2024-07-15T12:46:18Z")
> [@cheapmeow](#):
>
> `VTK-9.1.0`
Please update to the last release of VTK, v9.3.1
---
### Author:  [@cheapmeow](https://discourse.vtk.org/u/cheapmeow)
#### Post date: [July 15, 2024, 1:15pm UTC](https://discourse.vtk.org/t/segmentation-fault-happens-in-vtkalgorithm-update-when-calling-vtkxmlpstructuredgridwriter-update/14236/3 "2024-07-15T13:15:15Z")
I link to VTK-9.3.1 but there is link error.
```auto
Release/libSolver.a(vts_writer_mpi.cpp.o): In function `vtkAlgorithm::GetErrorCode()':
/public/home/jzc/VTK-9.3.1/Common/ExecutionModel/vtkAlgorithm.h:280: undefined reference to `vtksys::SystemTools::GetFilenameName(std::__cxx11::basic_string, std::allocator > const&)'
Release/libSolver.a(vts_writer_mpi.cpp.o): In function `vtkXMLPDataObjectWriter::SetStartPiece(int)':
/public/home/jzc/VTK-9.3.1/IO/ParallelXML/vtkXMLPDataObjectWriter.h:44: undefined reference to `vtksys::SystemTools::GetFilenameName(std::__cxx11::basic_string, std::allocator > const&)'
Release/libSolver.a(vts_writer_mpi.cpp.o): In function `vtkXMLPDataObjectWriter::SetNumberOfPieces(int)':
/public/home/jzc/VTK-9.3.1/IO/ParallelXML/vtkXMLPDataObjectWriter.h:36: undefined reference to `vtksys::SystemTools::GetFilenameName(std::__cxx11::basic_string, std::allocator > const&)'
Release/libSolver.a(vts_writer_mpi.cpp.o): In function `vtkXMLWriterBase::SetFileName(char const*)':
/public/home/jzc/VTK-9.3.1/IO/XML/vtkXMLWriterBase.h:114: undefined reference to `vtksys::SystemTools::GetFilenameName(std::__cxx11::basic_string, std::allocator > const&)'
Release/libSolver.a(vts_writer_mpi.cpp.o): In function `vtkXMLWriterBase::SetDataMode(int)':
/public/home/jzc/VTK-9.3.1/IO/XML/vtkXMLWriterBase.h:182: undefined reference to `vtksys::SystemTools::GetFilenameName(std::__cxx11::basic_string, std::allocator > const&)'
Release/libSolver.a(vts_writer_mpi.cpp.o):/public/home/jzc/VTK-9.3.1/IO/ParallelXML/vtkXMLPDataObjectWriter.h:46: more undefined references to `vtksys::SystemTools::GetFilenameName(std::__cxx11::basic_string, std::allocator > const&)' follow
collect2: error: ld returned 1 exit status
```
My CMakeLists.txt is
```CMakeLists
cmake_minimum_required(VERSION 3.10)
project(MyProject)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_FLAGS_DEBUG "-g -O0 -lm -DDEBUG")
set(CMAKE_CXX_FLAGS_RELEASE "-g -O3 -lm -DRELEASE")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-g -O3 -lm -DRELWITHDEBINFO")
# set output
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/$)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/$)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/$)
# find 3rdparty
find_package(MPI REQUIRED)
find_package(VTK COMPONENTS
CommonCore
CommonMisc
CommonDataModel
IOXML
IOParallelXML
ParallelMPI
FiltersProgrammable
)
if (NOT VTK_FOUND)
message(FATAL_ERROR "Solver: Unable to find the VTK build folder.")
endif()
# ================ Solver ================
add_library(Solver STATIC
src/solver/io/vts_writer.h
src/solver/io/vts_writer_mpi.cpp
src/solver/io/vts_writer.cpp
src/solver/io/vts_writer_mpi.h
src/solver/fluid_grid/fluid_grid_3d.h
src/solver/fluid_grid/field3.hpp
)
target_include_directories(Solver PUBLIC
${CMAKE_CURRENT_SOURCE_DIR}/src/solver
${MPI_CXX_INCLUDE_DIRS})
target_link_libraries(Solver PUBLIC
MPI::MPI_CXX
${VTK_LIBRARIES})
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS VTSWriter
MODULES ${VTK_LIBRARIES}
)
# ================ EXE ================
# Manual Tests
add_executable(test src/manual_test/test.cpp)
target_link_libraries(test PUBLIC Solver)
set_target_properties(test PROPERTIES
RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/$
ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/$
LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/$
)
```
My build command is
```shell
mkdir build
cd build
cmake -DVTK_USE_MPI=ON ..
make -j52
```
Seems like I lack libsys, but it should be link in vtk library. It should be passed to my cmake project by interface. Is there anything missing? I use the CMakeLists.txt to link VTK-9.1.0 before, and there was no link error.
---
### Author:  [@cheapmeow](https://discourse.vtk.org/u/cheapmeow)
#### Post date: [July 15, 2024, 1:42pm UTC](https://discourse.vtk.org/t/segmentation-fault-happens-in-vtkalgorithm-update-when-calling-vtkxmlpstructuredgridwriter-update/14236/4 "2024-07-15T13:42:49Z")
Final solution is put `vtkProgrammableFilter` handling into every write. Still using VTK-9.1.0.
Maybe `vtkProgrammableFilter` has some hidden usage requirement?
```cpp
void VTSWriterMPI::write_to_file(const std::string& filename)
{
// Create a vtkProgrammableFilter
programmable_filter = vtkSmartPointer::New();
// Initialize an instance of Args
Args args;
args.programmable_filter = programmable_filter;
for (int i = 0; i < 6; ++i)
args.local_extent[i] = local_extent[i];
programmable_filter->SetExecuteMethod(
[](void* arg) {
Args* args = reinterpret_cast(arg);
auto info = args->programmable_filter->GetOutputInformation(0);
auto output_tmp = args->programmable_filter->GetOutput();
auto input_tmp = args->programmable_filter->GetInput();
vtkStructuredGrid* output = dynamic_cast(output_tmp);
vtkStructuredGrid* input = dynamic_cast(input_tmp);
output->ShallowCopy(input);
output->SetExtent(args->local_extent);
},
&args);
programmable_filter->SetInputData(vtk_structured_grid);
vtk_structured_grid->SetExtent(global_extent);
vtk_structured_grid->SetPoints(points);
vtk_structured_grid->GetPointData()->AddArray(velocity);
vtk_structured_grid->GetPointData()->AddArray(pressure);
std::cout << "Writing vts: " << filename + ".vts" << std::endl;
// Create the parallel writer and call some functions
auto parallel_writer = vtkSmartPointer::New();
parallel_writer->SetInputConnection(programmable_filter->GetOutputPort());
parallel_writer->SetController(contr);
parallel_writer->SetFileName((filename + ".pvts").c_str());
parallel_writer->SetNumberOfPieces(mpi_size);
parallel_writer->SetStartPiece(mpi_rank);
parallel_writer->SetEndPiece(mpi_rank);
parallel_writer->SetDataModeToAppended();
parallel_writer->SetCompressorTypeToNone();
parallel_writer->EncodeAppendedDataOff();
parallel_writer->Update();
parallel_writer->Write();
if (parallel_writer->GetErrorCode() != vtkErrorCode::NoError)
{
std::cout << "Writing to file failed: " << filename + ".vts" << std::endl;
}
}
```