[CMake] Re: cmake linking problem

[Anders Sandholm]

Hi

Thank you all, problem solved, off course it was a case of RTFM... I
have just left out the generating of the moc files

Thanks

best regards
Anders

On 7/13/07, Anders Sandholm <anders.sandholm at gmail.com> wrote:
> Hi
>
> Using Cmake (vtk) with QT and trying to build using visual studio
> 2005. Now I have compiled both vtk and QT with visual studio 2005, and
> simple QT applications (like hello world workes perfekt) but now I try
> to do some a little more advanced and I get a linking problem.
> The source code that I try to compile is the Sliders Example
> (http://doc.trolltech.com/4.0/widgets-sliders.html)
> (the HelloWorld example I can compile with cmake)
>
> Now I am new to CMake, but the CMake file I am using look like:
>
>
> ------------------------------------------------------------------------------------------------
>
> PROJECT (Test)
>
> FIND_PACKAGE(VTK REQUIRED)
> find_package(Qt4 REQUIRED)
>
> IF(NOT VTK_USE_RENDERING)
>  MESSAGE(FATAL_ERROR "Example ${PROJECT_NAME} requires VTK_USE_RENDERING.")
> ENDIF(NOT VTK_USE_RENDERING)
>
> INCLUDE(${VTK_USE_FILE})
> include(${QT_USE_FILE})
>
> # the next line sets up include and link directories and defines some
> variables that we will use.
> # you can modify the behavior by setting some variables, e.g.
> #   set(QT_USE_OPENGL TRUE)
> # -> this will cause cmake to include and link against the OpenGL module
> include(${QT_USE_FILE})
>
> # the variable "qtproject_SRCS" contains all .cpp files of this project
> set(qtproject_SRCS
> main.cpp
> window.h
> window.cpp
> slidersgroup.h
> slidersgroup.cpp
> )
>
> INCLUDE_DIRECTORIES(qtproject_SRCS
>   ${QT_INCLUDE_DIR}
>   ${QT_QTNETWORK_INCLUDE_DIR}
>   ${QT_QTTEST_INCLUDE_DIR}
> )
>
> link_directories(qtproject_srcs
>   ${QT_LIBRARIES}
>   ${QT_QTNETWORK_LIBRARIES}
>   ${QT_QTTEST_LIBRARIES}
>
> )
>
>
> # tell cmake to create .moc files for all files in the variable
> qtproject_SRCS that require such a file.
> # note: this assumes that you use #include "header.moc" in your files
> qt4_automoc(${qtproject_SRCS})
>
> # create an executable file named "qtproject" from the source files in
> the variable "qtproject_SRCS".
> add_executable(qtproject ${qtproject_SRCS})
>
> TARGET_LINK_LIBRARIES(qtproject
>   ${QT_LIBRARIES}
>   ${QT_QTNETWORK_LIBRARIES}
>   ${QT_QTTEST_LIBRARIES}
> )
>
> ------------------------------------------------------------------------------------------------
>
> Now when I build in vs2005 it says:
>
> ------------------------------------------------------------------------------------------------
>
> 1>------ Build started: Project: qtproject, Configuration: Release Win32 ------
> 1>Linking...
> 1>window.obj : error LNK2019: unresolved external symbol "public:
> static struct QMetaObject const Window::staticMetaObject"
> (?staticMetaObject at Window@@2UQMetaObject@@B) referenced in function
> "public: static class QString __cdecl Window::tr(char const *,char
> const *)" (?tr at Window@@SA?AVQString@@PBD0 at Z)
> 1>window.obj : error LNK2001: unresolved external symbol "public:
> virtual struct QMetaObject const * __thiscall
> Window::metaObject(void)const "
> (?metaObject at Window@@UBEPBUQMetaObject@@XZ)
> 1>window.obj : error LNK2001: unresolved external symbol "public:
> virtual void * __thiscall Window::qt_metacast(char const *)"
> (?qt_metacast at Window@@UAEPAXPBD at Z)
> 1>window.obj : error LNK2001: unresolved external symbol "public:
> virtual int __thiscall Window::qt_metacall(enum
> QMetaObject::Call,int,void * *)"
> (?qt_metacall at Window@@UAEHW4Call at QMetaObject@@HPAPAX at Z)
> 1>slidersgroup.obj : error LNK2001: unresolved external symbol
> "public: virtual struct QMetaObject const * __thiscall
> SlidersGroup::metaObject(void)const "
> (?metaObject at SlidersGroup@@UBEPBUQMetaObject@@XZ)
> 1>slidersgroup.obj : error LNK2001: unresolved external symbol
> "public: virtual void * __thiscall SlidersGroup::qt_metacast(char
> const *)" (?qt_metacast at SlidersGroup@@UAEPAXPBD at Z)
> 1>slidersgroup.obj : error LNK2001: unresolved external symbol
> "public: virtual int __thiscall SlidersGroup::qt_metacall(enum
> QMetaObject::Call,int,void * *)"
> (?qt_metacall at SlidersGroup@@UAEHW4Call at QMetaObject@@HPAPAX at Z)
> 1>Release\qtproject.exe : fatal error LNK1120: 7 unresolved externals
> 1>Build log was saved at "file://z:\temp2\qtproject.dir\Release\BuildLog.htm"
> 1>qtproject - 8 error(s), 0 warning(s)
> ========== Build: 0 succeeded, 1 failed, 1 up-to-date, 0 skipped ==========
>
> ------------------------------------------------------------------------------------------------
>
> The BuildLog.htm says
>
> ------------------------------------------------------------------------------------------------
>
> Build Log      Build started: Project: qtproject, Configuration: Release|Win32
>  Command Lines      Creating temporary file
> "z:\temp2\qtproject.dir\Release\RSP00000136204020.rsp" with contents
> [
> /OUT:"Release\qtproject.exe" /VERSION:0.0 /INCREMENTAL:NO
> /LIBPATH:"c:\vtkBin\bin\Release" /LIBPATH:"c:\vtkBin\bin"
> /LIBPATH:"qtproject_srcs\Release" /LIBPATH:"qtproject_srcs"
> /LIBPATH:"optimized\Release" /LIBPATH:"optimized"
> /LIBPATH:"c:\QT\lib\QtGui4.lib\Release"
> /LIBPATH:"c:\QT\lib\QtGui4.lib" /LIBPATH:"debug\Release"
> /LIBPATH:"debug" /LIBPATH:"c:\QT\lib\QtGuid4.lib\Release"
> /LIBPATH:"c:\QT\lib\QtGuid4.lib" /LIBPATH:"Imm32\Release"
> /LIBPATH:"Imm32" /LIBPATH:"Winmm\Release" /LIBPATH:"Winmm"
> /LIBPATH:"c:\QT\lib\QtCore4.lib\Release"
> /LIBPATH:"c:\QT\lib\QtCore4.lib"
> /LIBPATH:"c:\QT\lib\QtCored4.lib\Release"
> /LIBPATH:"c:\QT\lib\QtCored4.lib" /LIBPATH:"Ws2_32\Release"
> /LIBPATH:"Ws2_32" /LIBPATH:"c:\QT\lib\QtNetwork4.lib\Release"
> /LIBPATH:"c:\QT\lib\QtNetwork4.lib"
> /LIBPATH:"c:\QT\lib\QtNetworkd4.lib\Release"
> /LIBPATH:"c:\QT\lib\QtNetworkd4.lib"
> /LIBPATH:"c:\QT\lib\QtTest4.lib\Release"
> /LIBPATH:"c:\QT\lib\QtTest4.lib"
> /LIBPATH:"c:\QT\lib\QtTestd4.lib\Release"
> /LIBPATH:"c:\QT\lib\QtTestd4.lib" /LIBPATH:"c:\QT\lib\Release"
> /LIBPATH:"c:\QT\lib" /MANIFEST
> /MANIFESTFILE:"qtproject.dir\Release\qtproject.exe.intermediate.manifest"
> /PDB:"Release\qtproject.pdb" /SUBSYSTEM:CONSOLE /STACK:10000000
> /STACK:10000000 /machine:I386   kernel32.lib user32.lib gdi32.lib
> winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib
> advapi32.lib  QtGui4.lib Imm32.lib Winmm.lib QtCore4.lib Ws2_32.lib
> QtNetwork4.lib QtTest4.lib
>
> ".\qtproject.dir\Release\main.obj"
>
> ".\qtproject.dir\Release\window.obj"
>
> ".\qtproject.dir\Release\slidersgroup.obj"
> ]
> Creating command line "link.exe
> @z:\temp2\qtproject.dir\Release\RSP00000136204020.rsp /NOLOGO
> /ERRORREPORT:PROMPT"
>  Output Window      Linking...
> window.obj : error LNK2019: unresolved external symbol "public: static
> struct QMetaObject const Window::staticMetaObject"
> (?staticMetaObject at Window@@2UQMetaObject@@B) referenced in function
> "public: static class QString __cdecl Window::tr(char const *,char
> const *)" (?tr at Window@@SA?AVQString@@PBD0 at Z)
> window.obj : error LNK2001: unresolved external symbol "public:
> virtual struct QMetaObject const * __thiscall
> Window::metaObject(void)const "
> (?metaObject at Window@@UBEPBUQMetaObject@@XZ)
> window.obj : error LNK2001: unresolved external symbol "public:
> virtual void * __thiscall Window::qt_metacast(char const *)"
> (?qt_metacast at Window@@UAEPAXPBD at Z)
> window.obj : error LNK2001: unresolved external symbol "public:
> virtual int __thiscall Window::qt_metacall(enum
> QMetaObject::Call,int,void * *)"
> (?qt_metacall at Window@@UAEHW4Call at QMetaObject@@HPAPAX at Z)
> slidersgroup.obj : error LNK2001: unresolved external symbol "public:
> virtual struct QMetaObject const * __thiscall
> SlidersGroup::metaObject(void)const "
> (?metaObject at SlidersGroup@@UBEPBUQMetaObject@@XZ)
> slidersgroup.obj : error LNK2001: unresolved external symbol "public:
> virtual void * __thiscall SlidersGroup::qt_metacast(char const *)"
> (?qt_metacast at SlidersGroup@@UAEPAXPBD at Z)
> slidersgroup.obj : error LNK2001: unresolved external symbol "public:
> virtual int __thiscall SlidersGroup::qt_metacall(enum
> QMetaObject::Call,int,void * *)"
> (?qt_metacall at SlidersGroup@@UAEHW4Call at QMetaObject@@HPAPAX at Z)
> Release\qtproject.exe : fatal error LNK1120: 7 unresolved externals
>  Results      Build log was saved at
> "file://z:\temp2\qtproject.dir\Release\BuildLog.htm"
> qtproject - 8 error(s), 0 warning(s)
>
> ------------------------------------------------------------------------------------------------
>
> Anybody that knows what I am doing wrong?
>
> Regards
> // anders
>