main.o: In function `main':
main.cpp:(.text+0x44): undefined reference to `QTreeView::QTreeView(QWidget*)'
main.cpp:(.text+0x66): undefined reference to `QListView::QListView(QWidget*)'
main.cpp:(.text+0x88): undefined reference to `QTableView::QTableView(QWidget*)'
main.cpp:(.text+0x9b): undefined reference to `QSplitter::QSplitter(QWidget*)'
main.cpp:(.text+0xb0): undefined reference to `QSplitter::addWidget(QWidget*)'
main.cpp:(.text+0xc5): undefined reference to `QSplitter::addWidget(QWidget*)'
main.cpp:(.text+0xda): undefined reference to `QSplitter::addWidget(QWidget*)'
main.cpp:(.text+0xfd): undefined reference to `QStandardItemModel::QStandardItemModel(int, int, QObject*)'
main.cpp:(.text+0x14e): undefined reference to `QString::fromAscii_helper(char const*, int)'
main.cpp:(.text+0x188): undefined reference to `QString::arg(long long, int, int, QChar const&) const'
main.cpp:(.text+0x1bf): undefined reference to `QString::arg(long long, int, int, QChar const&) const'
main.cpp:(.text+0x1dc): undefined reference to `QStandardItem::QStandardItem(QString const&)'
main.cpp:(.text+0x26e): undefined reference to `QString::fromAscii_helper(char const*, int)'
main.cpp:(.text+0x2a8): undefined reference to `QString::arg(long long, int, int, QChar const&) const'
main.cpp:(.text+0x2c5): undefined reference to `QStandardItem::QStandardItem(QString const&)'
main.cpp:(.text+0x2cd): undefined reference to `QStandardItem::rowCount() const'
main.cpp:(.text+0x2d9): undefined reference to `QListData::shared_null'
main.cpp:(.text+0x2e0): undefined reference to `QListData::shared_null'
main.cpp:(.text+0x305): undefined reference to `QStandardItem::insertRow(int, QList<QStandardItem*> const&)'
main.cpp:(.text+0x329): undefined reference to `QString::free(QString::Data*)'
main.cpp:(.text+0x339): undefined reference to `QString::free(QString::Data*)'
main.cpp:(.text+0x364): undefined reference to `QStandardItemModel::setItem(int, int, QStandardItem*)'
main.cpp:(.text+0x408): undefined reference to `QAbstractItemView::selectionModel() const'
main.cpp:(.text+0x433): undefined reference to `QAbstractItemView::selectionModel() const'
main.cpp:(.text+0x469): undefined reference to `QApplication::QApplication(int&, char**, int)'
main.cpp:(.text+0x483): undefined reference to `QStandardItemModel::~QStandardItemModel()'
main.cpp:(.text+0x4a7): undefined reference to `QString::free(QString::Data*)'
main.cpp:(.text+0x4b7): undefined reference to `QString::free(QString::Data*)'
main.cpp:(.text+0x4c7): undefined reference to `QString::free(QString::Data*)'
main.cpp:(.text+0x4f9): undefined reference to `QStandardItemModel::~QStandardItemModel()'
main.cpp:(.text+0x52e): undefined reference to `QString::free(QString::Data*)'
main.cpp:(.text+0x546): undefined reference to `QString::free(QString::Data*)'
main.cpp:(.text+0x580): undefined reference to `QString::free(QString::Data*)'
main.cpp:(.text+0x598): undefined reference to `QString::free(QString::Data*)'
main.cpp:(.text+0x5b4): undefined reference to `QString::free(QString::Data*)'
main.o: In function `QList<QStandardItem*>::free(QListData::Data*)':
main.cpp:(.text._ZN5QListIP13QStandardItemE4freeEPN9QListData4DataE[QList<QStandardItem*>::free(QListData::Data*)]+0x15): undefined reference to `qFree(void*)'
main.o: In function `QList<QStandardItem*>::detach_helper()':
main.cpp:(.text._ZN5QListIP13QStandardItemE13detach_helperEv[QList<QStandardItem*>::detach_helper()]+0xe): undefined reference to `QListData::detach2()'
main.o: In function `QList<QStandardItem*>::append(QStandardItem* const&)':
main.cpp:(.text._ZN5QListIP13QStandardItemE6appendERKS1_[QList<QStandardItem*>::append(QStandardItem* const&)]+0x29): undefined reference to `QListData::append()'
collect2: ld 返回 1
make: *** [threeview] 错误 1
这种编译信息能够说明什么?