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Problem with boost



Dear list,

we are using qt-4, opencv and boost in our project.

On my etch box dpkg -l libboost\* says:
un  libboost-date- <keine>        (keine Beschreibung vorhanden)
ii  libboost-dev   1.33.1-4       Boost C++ Libraries development files
ii  libboost-doc   1.33.1-4       Boost.org libraries documentation
ii  libboost-files 1.33.1-4       filesystem operations (portable paths, itera
ii  libboost-files 1.33.1-4       filesystem operations (portable paths, itera
un  libboost-graph <keine>        (keine Beschreibung vorhanden)
un  libboost-iostr <keine>        (keine Beschreibung vorhanden)
un  libboost-progr <keine>        (keine Beschreibung vorhanden)
un  libboost-pytho <keine>        (keine Beschreibung vorhanden)
ii  libboost-pytho 1.31.0-9       Boost Python Library
ii  libboost-pytho 1.32.0-6       Boost.Python Library
rc  libboost-pytho 1.33.0-2       Boost.Python Library
ii  libboost-pytho 1.33.0-6       Boost.Python Library
ii  libboost-pytho 1.33.1-4       Boost.Python Library
un  libboost-regex <keine>        (keine Beschreibung vorhanden)
un  libboost-seria <keine>        (keine Beschreibung vorhanden)
ii  libboost-signa 1.33.1-4       managed signals and slots library for C++
ii  libboost-signa 1.33.1-4       managed signals and slots library for C++
un  libboost-test- <keine>        (keine Beschreibung vorhanden)
un  libboost-threa <keine>        (keine Beschreibung vorhanden)
un  libboost-wave- <keine>        (keine Beschreibung vorhanden)

and in our .pro file we have:
LIBS += -lboost_signals -lboost_filesystem `pkg-config --cflags --libs opencv`

but during building i get:
undefined reference to `boost::signalslib::trackable::~trackable()'

So what am i doing wrong?

regards

Christoph



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