if test -z "$with_qt"; then
  with_qt=yes
fi
QTLIBS="-lQtCore -lQtGui -lstdc++"
QTMOC=
QTLIB=
QTINC=

if test -n "$with_qt_lib"; then
  QTLIB="-L$with_qt_lib"
fi
if test -n "$with_qt_include"; then
  QTINC="-I$with_qt_include"
fi

case "$with_qt" in
yes)
   pth=`echo $PATH | tr ':' ' '`;
   QTMOC=`./locate moc '' $pth`
   if ! test -n "$QTMOC"; then
     case "$sizeof_long" in
       4) addlib="/usr/local/lib32 /lib32 /usr/lib32";;
       8) addlib="/usr/local/lib64 /lib64 /usr/lib64";;
     esac
     pth="$addlib /usr/local/lib /usr/local/share /usr/lib /lib /usr/share"
     QTMOC=`./locate qt4/bin/moc '' $pth`
     if ! test -n "$QTMOC"; then
       QTMOC=`./locate qt/bin/moc '' $pth`
     fi
   fi;;
*) if test ! -d "$with_qt"; then
     echo "### Qt binary '$with_qt/moc' not found"
   else
     QTMOC=$with_qt/moc
     which_graphic_lib=Qt4
   fi;;
esac

if test -n "$QTMOC"; then
  if test -z "$QTINC"; then
    QTDIR=`dirname $QTMOC`
    if test -d "$QTDIR/include"; then
      QTINC="-I$QTDIR/include"
    else
      QTINC="-I/usr/include/qt4"
    fi
  fi
  if test -z "$QTLIB"; then
    lib=QtCore; . ./locatelib
    if test -n "$QtCore"; then
      QTLIB="-L$QtCore"
    fi
  fi
fi
if test -n "$QTMOC"; then
  exe=$osname-$arch-Qt4$$$exe_suff
  cmd="g++ $CFLAGS $extraflag $QTLIB $QTLIBS $QTINC -o $exe has_Qt4.c"
  . log_cmd;
  if test ! -r $exe; then
    QTMOC=
  fi
fi

if test -n "$QTMOC"; then
  echo "Using Qt library, QTMOC = $QTMOC, QTLIB = $QTLIB, QTINC = $QTINC"
  which_graphic_lib=Qt4
else
  which_graphic_lib=none
  echo "### Qt not found. Building without Qt support"
fi