[CMake] cmake + Qt4 compilation problem

[Christian Ehrlicher]

> Von: "Christian Ehrlicher" 
> > Von: "Luis Roberto P. Paula"
> > Hello everyone!
> > 
> > I'm trying to compile a simple application using Qt4 with cmake, but I'm
> > stucked in this error:
> > 
> > [ 33%] Generating ui_mivgui.h
> > Scanning dependencies of target viewer
> > [ 66%] Building CXX object CMakeFiles/viewer.dir/main.o
> > [100%] Building CXX object CMakeFiles/viewer.dir/mivgui.o
> > Linking CXX executable viewer
> > CMakeFiles/viewer.dir/mivgui.o: In function `MivGui::MivGui(QWidget*)':
> > mivgui.cxx:(.text+0x14e): undefined reference to `vtable for MivGui'
> > mivgui.cxx:(.text+0x158): undefined reference to `vtable for MivGui'
> > CMakeFiles/viewer.dir/mivgui.o: In function `MivGui::MivGui(QWidget*)':
> > mivgui.cxx:(.text+0x2c6): undefined reference to `vtable for MivGui'
> > mivgui.cxx:(.text+0x2d0): undefined reference to `vtable for MivGui'
> > CMakeFiles/viewer.dir/mivgui.o: In function `MivGui::tr(char const*,
> char
> > const*)':
> > mivgui.cxx:(.text._ZN6MivGui2trEPKcS1_[MivGui::tr(char const*, char
> > const*)]+0x1e): undefined reference to `MivGui::staticMetaObject'
> > collect2: ld returned 1 exit status
> > make[2]: *** [viewer] Error 1
> > make[1]: *** [CMakeFiles/viewer.dir/all] Error 2
> > make: *** [all] Error 2
> > 
> <snip>
> > 
> > CMakeLists.txt
> >
> ----------------------------------------------------------------------------------------------------------------------------------------------
> > 
> > SET(SOURCES_CPP
> >  main.cxx
> >  mivgui.cxx)
> > MESSAGE( STATUS ${SOURCES_CPP} )
> > 
> > SET(SOURCES_H
> >  mivgui.h)
> > MESSAGE( STATUS ${SOURCES_H} )
> > 
> > SET(SOURCES_UI
> >  mivgui.ui)
> > MESSAGE( STATUS ${SOURCES_UI} )
> > 
> > FIND_PACKAGE(Qt4 REQUIRED)
> > 
> > include(${QT_USE_FILE})
> > 
> > QT4_WRAP_UI(SOURCES_UI_H ${SOURCES_UI})
> > 
> > #qt4_automoc(${SOURCES_H})
> > 
> Why did you comment out this line?
> You need to moc your header - otherwise you'll get linker errors like
> above.
> 
> 
Oh, I frogot something.

You've to add '#include "mivgui.moc"' at the end of mivgui.cxx to make sure automoc works like expected.
This is because cmake uses the 'automake-way' of creating moc files. Search cmake wiki and mailing list - this was discussed often :)


HTH
Christian

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