[SOLVED] Runtime error in component

[Binesh]

Hello guys
i write a component & i need to handle topology . so i want to use “TopologyEngineImpl”.
i wanna to handle topology points
i create a “PointData” variable and use initData in constructor
and also include topologySubData.h ,
after build and run a get “undefined symbol” in application outputs and plugin cannot be load.
How can i fix my problem ?

Thanks,
Behnam Binesh

[Hugo]

Hi Binesh,

I guess this component is stored in one of your plugins, right ?
You should set the right dependency to you plugin: you need to find the package SofaBase in which the lib SofaBaseTopology is located. With this lib, you can use the TopologyEngineImpl.

This might be a solution. Let me know if it helps,
Cheers,

Hugo

[Binesh]

Thanks Dear Hugo
yes , you right , my component stored in one plugin
now , i used “find_package(SOFA_LIB_COMPONENT_BASE_TOPOLOGY REQUIRED)” in my plugin’s cmake file but the cmake show me a error
//******************************************ERROR TEXT*****************************
error: By not providing “FindLIB_COMPONENT_BASE_TOPOLOGY.cmake” in CMAKE_MODULE_PATH this project has asked CMake to find a package configuration file provided by “LIB_COMPONENT_BASE_TOPOLOGY”, but CMake did not find one. Could not find a package configuration file provided by “LIB_COMPONENT_BASE_TOPOLOGY” with any of the following names: LIB_COMPONENT_BASE_TOPOLOGYConfig.cmake lib_component_base_topology-config.cmake Add the installation prefix of “LIB_COMPONENT_BASE_TOPOLOGY” to CMAKE_PREFIX_PATH or set “LIB_COMPONENT_BASE_TOPOLOGY_DIR” to a directory containing one of the above files. If “LIB_COMPONENT_BASE_TOPOLOGY” provides a separate development package or SDK, be sure it has been installed.
//**********************************************************************************

[Hugo]

Hi Binesh,

Sorry for the delay, we’re quite busy right now.
It should be written this way:

find_package(SofaBase REQUIRED)
...
set(LINKER_DEPENDENCIES ${LINKER_DEPENDENCIES} SofaBaseTopology)
...
target_link_libraries(${PROJECT_NAME} ${LINKER_DEPENDENCIES})

Let me know if it helps.

Hugo

[Binesh]

Hi Hugo,
Thanks for reply, i used this code but the error still available , when i write “SofaBase REQUIRED” i got an error like my previous post,
i’m so sorry but give me another solution , THANKS DEAR HUGO

Binesh

[epernod]

Hi @Binesh,

could you post the code of the CMakeList of your plugin, it will be easier to see the problem and reproduce it.

thanks,

Erik

[Binesh]

Hi pernod
yes of course

include(${SOFA_CMAKE_DIR}/preProject.cmake)

set(HEADER_FILES

        FreezeSpring.h
        initFreezeSpring.h
        FreezeSpring.inl
       
	)

set(SOURCE_FILES

        FreezeSpring.cpp
    initFreezeSpring.cpp

	)

set(README_FILES

        FreezeSpring.txt
	)

add_library(${PROJECT_NAME} SHARED ${HEADER_FILES} ${MOC_FILES} ${SOURCE_FILES} ${README_FILES})

AddCompilerDefinitions("SOFA_BUILD_FREEZESPRING")
AddLinkerDependencies(SofaComponentMain)

include(${SOFA_CMAKE_DIR}/postProject.cmake)

Thanks @pernod

[Hugo]

Hi Binesh,

Which version of SOFA are you using btw ?
With the current structure of SOFA, the CMakeList.txt of your plugin FreezeSpring should look pretty close to:

cmake_minimum_required(VERSION 3.1)
project(FreezeSpring)

set(HEADER_FILES
    FreezeSpring.h
    initFreezeSpring.h
    FreezeSpring.inl
)

set(SOURCE_FILES
    FreezeSpring.cpp
    initFreezeSpring.cpp
)

find_package(SofaBase REQUIRED)

add_library(${PROJECT_NAME} SHARED ${HEADER_FILES} ${SOURCE_FILES} )
set_target_properties(${PROJECT_NAME} PROPERTIES COMPILE_FLAGS "-DSOFA_BUILD_FREEZESPRING")
target_link_libraries(${PROJECT_NAME} SofaBaseTopology)
include_directories("${CMAKE_CURRENT_SOURCE_DIR}/..")

install(TARGETS ${PROJECT_NAME}
        COMPONENT FreezeSpring_libraries
        EXPORT FreezeSpringTargets
        RUNTIME DESTINATION bin
        LIBRARY DESTINATION lib
        ARCHIVE DESTINATION lib)

Agreed Erik?
Hope this helps,

Hugo

[Binesh]

Thanks Dear Hugo ,
our SOFA version is old , about 2 years ago and we can not upgrade our sofa to newest version of sofa now , will happen in the future
so i try this cmake and report the result

Thanks

Binesh

[Binesh]

Unfortunately , the problem still remains
🙁

[Hugo]

Ouch, an old version of SOFA will make the debugging pretty complicated :s

Have you try this:

include(${SOFA_CMAKE_DIR}/preProject.cmake)

set(HEADER_FILES

        FreezeSpring.h
        initFreezeSpring.h
        FreezeSpring.inl
       
	)

set(SOURCE_FILES

        FreezeSpring.cpp
    initFreezeSpring.cpp

	)

set(README_FILES

        FreezeSpring.txt
	)

add_library(${PROJECT_NAME} SHARED ${HEADER_FILES} ${MOC_FILES} ${SOURCE_FILES} ${README_FILES})

AddCompilerDefinitions("SOFA_BUILD_FREEZESPRING")
AddLinkerDependencies(SofaComponentMain)
AddLinkerDependencies(SofaBaseTopology)

include(${SOFA_CMAKE_DIR}/postProject.cmake)

But the only advice I could give is to update your SOFA version to a stable release (v16.12). I can guess that it might take you some time and effort, but I want you to know that we stay at your disposal to help in this stage of your work.
Let us know about your next move.

Hugo

[Binesh]

Thanks Dear Hugo
i try this code but the problem still remains
The error line is :: “undefined symbol: _ZN4sofa9component8topology22TopologySubsetDataImpl
IjNS_6helper6vectorIjNS3_16CPUMemoryManagerIjEEEEE20
linkToPointDataArrayEv”

i type definition for points like this ::
typedef helper::vector<unsigned int> SetIndexArray;
typedef sofa::component::topology::PointSubsetData< SetIndexArray > SubSetSetIndex;

and finally i declare a variable from SubSetSetIdnex and init data in constructor.

so after build and run i got undefined symbol error

“** Thanks for support dear hugo , in future i upgrade our sofa **”

[Hugo]

Yeah, your plugin needs to have a clear dependency to the module in SOFA where the TopologySubsetDataImpl is implemented. Without it, it gives a symbol error as you have.

To solve it, you must look for the cmake project that includes the class TopologySubsetDataImpl, and add it in AddLinkerDependencies() in the CMakeLists of your plugin.

Sorry about these issues. Upgrade looks like a proper solution.

[Binesh]

Yes , TopologySubSetDataImpl implemented in SofaBaseTopology and i use AddLinkerDependencies(SofaBaseTopology) in my cmakeFile , But after build i open cmake GUI project and i see that the SofaBaseTopology Dir NOT FOUND ,
Why ?

[Hugo]

Maybe try to set the path to the SofaBaseTopology lib.
But as I mentioned, with an old version of SOFA, it’s pretty hard to bring remote support.

[Binesh]

Thanks Dear Hugo , My Problem fixed by another approach
first i create TopologySubsetData.cpp file in sofabasetopology and include TopologySubsetData.h & TopologySubsetData.inl and declare our template such as ::
template class sofa::component::topology::TopologySubsetDataImpl< sofa::component::topology::Point, sofa::helper::vector <unsigned int > > ;

then i use this template in my plugin and undefined symbol error fixed

Thanks

Binesh

[Hugo]

Cool Binesh!
Nice to hear! Let us know when you’ll upgrade so that we can help.
Cheers

Hugo

[Author]

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