Need Help: (QT 4.8.5 and Mavericks 10.9.4) ld: symbol(s) not found for architecture i386

SGaist

Even if your MacBook was a bit older, the last version of OS X running on 32bit processor is Snow Leopard which is quiet old by current standard.

Just build your project for 64 bit

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Could you tell me how to build in 64 bit or point me in the right direction? Thanks for replying so fast, I do appreciate it.

SGaist

By default Qt is built in 64bit so there should be nothing special to be done. Are you trying to build an external project ?

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I am trying to modify an open source 2D drawing program called QCAD. I looked on the internet and saw that I need to configure Qt so that it knows to build in 64 bit. Here are the directions for building QCAD: http://www.qcad.org/en/component/content/article/78-qcad/111-qcad-compilation-from-sources

I am trying to reconfigure Qt like this: cd qt-everywhere-opensource-src-4.8.5

./configure -fast -opensource -arch x86_64 -release \

-no-qt3support -qt-zlib -qt-libtiff -qt-libpng -qt-libmng \

-qt-libjpeg -confirm-license

and make to see if it works this way. If you see anything wrong with this or if I should use a different version of Qt then please let me know.

Thanks

SGaist

There's no need for the arch switch. Again, use 4.8.6 since you build from source anyway. You could also download the pre-built package.

By the way, which version of Xcode are you using ?

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Hello SGaist, I did start using 4.8.6 a few hours ago and it got through the error so thank you for suggesting that earlier. However I got a new error which is shown below:
@Undefined symbols for architecture x86_64:
"Phonon::ObjectDescriptionModel<(Phonon::ObjectDescriptionType)0>::qt_metacast(char const*)", referenced from:
vtable for Phonon::ObjectDescriptionModel<(Phonon::ObjectDescriptionType)0> in window.o
"Phonon::ObjectDescriptionModel<(Phonon::ObjectDescriptionType)0>::metaObject() const", referenced from:
vtable for Phonon::ObjectDescriptionModel<(Phonon::ObjectDescriptionType)0> in window.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[3]: *** [capabilities.app/Contents/MacOS/capabilities] Error 1
make[2]: *** [sub-capabilities-make_default-ordered] Error 2
make[1]: *** [sub-phonon-make_default] Error 2
make: *** [sub-examples-make_default-ordered] Error 2
@

I haven't heard of phonon (outside of my undergrad physics classes), do you know what it is and how to solve it? Thanks again for your help.

My Xcode is Version 6.0.1

SGaist

Are you sure it wasn't about photons ? ;)

Phonon is the multimedia backend used by Qt 4 however I doubt that QCAD makes use of it.

This error generally appears when QObject wasn't properly moc'ed, did you start from a clean build ?

On a side note, if you don't need phonon, you can also simply disable it for the time being to go forward.

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SGaist, how do you disable Phonon from the build? Do I have to leave out something in the configure command? This is what I used to configure:

@cd qt-everywhere-opensource-src-4.8.6
./configure -fast -opensource -arch x86_64 -release
-no-qt3support -qt-zlib -qt-libtiff -qt-libpng -qt-libmng
-qt-libjpeg -confirm-license@

Thanks again for your help. Also, I was talking about "these phonons":http://en.wikipedia.org/wiki/Phonon

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bump. I still need help =(

SGaist

Yes, just add -no-phonon don't forget to do a make confclean before restarting configure.

If you want to simplify a bit things, you can do an out of source build, so if something goes wrong you can simply nuke the folder content and start over.

Thanks for the link, I learned something new :)