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a/src/configure.ac b/src/configure.ac
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  # depend on this. We try to detect the qt 4 version string instead.
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  # depend on this. We try to detect the qt 4 version string instead.
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  qmakevers="`${QMAKE} --version 2>&1`"
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  qmakevers="`${QMAKE} --version 2>&1`"
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  #echo "qmake version: $qmakevers"
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  #echo "qmake version: $qmakevers"
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  v4=`expr "$qmakevers" : '.*Qt[ ][ ]*version[ ][ ]*4.*'`
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  v4=`expr "$qmakevers" : '.*Qt[ ][ ]*version[ ][ ]*4.*'`
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  if test X$v4 = X0 ; then 
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  if test X$v4 = X0 ; then 
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     AC_MSG_NOTICE([using qt version 3 user interface])
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     AC_MSG_ERROR([qmake seems to indincate using Qt version 3 which is not supported any more])
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     QTGUI=qtgui
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     QTGUI=qtgui
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  else
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  else
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    AC_MSG_NOTICE([using qt version 4 user interface])
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    AC_MSG_NOTICE([using qt version 4 user interface])
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    QTGUI=qt4gui
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    QTGUI=qtgui
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    AC_PATH_PROG([UIC3], [uic3], NOTFOUND)
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    if test X$UIC3 = XNOTFOUND ; then 
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      AC_MSG_ERROR([Cannot find the uic3 program. Maybe you need to add
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      the qt3 compatibility libraries and tools to your qt4 installation ?])
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    fi
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  fi
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  fi
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  cd $QTGUI
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  cd $QTGUI
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  # We just want a .pro file: no problem with unsubstituted variables at 
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  # We just want a .pro file: no problem with unsubstituted variables at 
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  # this point.
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  # this point.
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  test -f uifrom3 && make -f uifrom3
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  test -f recoll.pro && chmod +w recoll.pro
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  test -f recoll.pro && chmod +w recoll.pro
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  cp recoll.pro.in recoll.pro
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  cp recoll.pro.in recoll.pro
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  #echo QMAKE ${QMAKE}
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  #echo QMAKE ${QMAKE}
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  ${QMAKE} recoll.pro
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  ${QMAKE} recoll.pro
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  if test $? != 0 ; then
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  if test $? != 0 ; then