[Insight-users] [ITK Community] Multiple shared libraries and linking error: itk_nrrdSpaceDimension already defined

[Matt McCormick]

Hi Barbara,

The following may help:

- Use the latest version of ITK
- Make sure all builds are made against the same build of ITK
- Make sure your libraries have their dll-import-export specification set
correctly.
- Build statically

HTH,
Matt


On Wed, Mar 12, 2014 at 12:06 PM, Barbara Post <bpo at eonix.be> wrote:

>  Hello,
>
>
>
> I'm not sure about what I should change in my project.
>
> I read
>
>
> https://issues.itk.org/jira/browse/ITK-2861?page=com.atlassian.streams.streams-jira-plugin:activity-stream-issue-tabso this indicates the error is from me, not ITK.
>
>
>
> I build a shared library that is a custom Qt4 plugin. I use another set of
> libraries MYOTHERLIB that provides an itk-tools.dll shared lib with classes
> dedicating to talking to ITK.
>
>
>
> I use MSVC 2010 64 bit compiler, compiled ITK with it.
>
>
>
> My error when compiling :
>
> LNK2005: itk_nrrdSpaceDimension already defined in
> itk-tools.lib(itk-tools.dll)
>
>
>
> itk-tools base class, XITKTools, has following ITK includes:
>
>
>
> #include <itkImage.h>
>
> #include <itkImageFileWriter.h>
>
> #include <itkImageFileReader.h>
>
> #include <itkMinimumMaximumImageCalculator.h>
>
> #include <itkImageMaskSpatialObject.h>
>
>
>
> What else could I check about includes/linkings?
>
>
>
> Thanks,
>
>
>
> Barbara
>
>
>
> My CMakeLists.txt:
>
>
>
> cmake_minimum_required(VERSION 2.8.8)
>
>
>
> project(applet-tutorial2)
>
>
>
> FIND_PACKAGE(Qt4 REQUIRED)
>
>
>
> if (QT4_FOUND)
>
>     INCLUDE(${QT_USE_FILE})
>
> else()
>
>     message(FATAL_ERROR "No Qt4 found")
>
> endif()
>
>
>
> *FIND_PACKAGE(ITK REQUIRED)*
>
>
>
> *if(ITK_FOUND)*
>
> *    include(${ITK_USE_FILE})*
>
> *else()*
>
> *    message(FATAL_ERROR "No ITK found")*
>
> *endif()*
>
>
>
> # define path to MYOTHERLIB platform, relying on environment variable
>
> IF(CMAKE_BUILD_TYPE MATCHES Debug)
>
>     SET(MYOTHERLIB_DIR "$ENV{MYOTHERLIB}/debug")
>
>     MESSAGE(STATUS "Debug build")
>
> ELSE()
>
>     SET(MYOTHERLIB_DIR "$ENV{MYOTHERLIB}/relWithDebInfo")
>
>     MESSAGE(STATUS "Not debug build")
>
> ENDIF()
>
>
>
> # define cmake subdirectory
>
> set(MYOTHERLIB_CMAKE_DIR cmake)
>
> # required for find_package directive to work
>
> set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
> ${PROJECT_SOURCE_DIR}/${MYOTHERLIB_CMAKE_DIR})
>
>
>
> # Find MYOTHERLIB platform installation
>
> find_package(MYOTHERLIBPlatform REQUIRED)
>
>
>
> # application headers files
>
> SET(applet_tutorial2_HEADERS
>
> [snip]
>
> )
>
> # application files: source files
>
> # and every file we want to show up in project files tree
>
> # (headers and other files)
>
> SET(applet_tutorial2_SOURCES
>
>     ${applet_tutorial2_HEADERS}
>
> [snip]
>
> )
>
>
>
> SET(applet_tutorial2_RESOURCES resources/resources.qrc)
>
>
>
> # Use AutoMoc
>
> SET(CMAKE_AUTOMOC ON)
>
> # Resources
>
> QT4_ADD_RESOURCES(applet_tutorial2_RESOURCES_RCC
> ${applet_tutorial2_RESOURCES})
>
>
>
> # all includes
>
> include_directories(
>
> "${CMAKE_CURRENT_SOURCE_DIR}/include"
>
> "${MYOTHERLIB_DIR}/include"
>
> "${MYOTHERLIB_DIR}/include/foundation"
>
> "${MYOTHERLIB_DIR}/include/logger"
>
> "${MYOTHERLIB_DIR}/include/container-data"
>
> "${MYOTHERLIB_DIR}/include/dicom"
>
> "${MYOTHERLIB_DIR}/include/itk-tools"
>
> ${CMAKE_CURRENT_BINARY_DIR}
>
> )
>
>
>
> # linking
>
> link_directories("${MYOTHERLIB_DIR}/lib")
>
>
>
> # build shared library (syntax: name, type, list of files)
>
> add_library(
>
>     applet-tutorial2 SHARED
>
>     ${applet_tutorial2_SOURCES}
>
>     ${applet_tutorial2_HEADERS}
>
> )
>
>
>
> # linking. Variables are defined by find_library() call in
> MYOTHERLIB_config.cmake
>
> # MYOTHERLIB defines 5 *_LIB variables below.
>
> target_link_libraries(
>
>     applet-tutorial2
>
>     ${QT_LIBRARIES}
>
> *    ${ITK_LIBRARIES}*
>
>     ${foundation_LIB}
>
>     ${logger_LIB}
>
>     ${container-data_LIB}
>
>     ${dicom_LIB}
>
>     ${itk-tools_LIB}
>
> )
>
>
>
>
>
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