qscintilla2：体系结构x86_64的未定义符号

Question

我有一个静态Qt并在macOS 10.12.4上重新编译了qscintilla2_qt5.a（2.10）。当我编译我的项目时，它会打印出这个错误：

Undefined symbols for architecture x86_64:
  "qRegisterDraggedTypes(QStringList const&)", referenced from:
      initialiseRectangularPasteboardMime() in libqscintilla2_qt5.a(MacPasteboardMime.o)
  "QMacPasteboardMime::count(QMimeData*)", referenced from:
      vtable for RectangularPasteboardMime in libqscintilla2_qt5.a(MacPasteboardMime.o)
  "QMacPasteboardMime::QMacPasteboardMime(char)", referenced from:
      initialiseRectangularPasteboardMime() in libqscintilla2_qt5.a(MacPasteboardMime.o)
  "QMacPasteboardMime::~QMacPasteboardMime()", referenced from:
      RectangularPasteboardMime::~RectangularPasteboardMime() in libqscintilla2_qt5.a(MacPasteboardMime.o)
      RectangularPasteboardMime::~RectangularPasteboardMime() in libqscintilla2_qt5.a(MacPasteboardMime.o)
  "typeinfo for QMacPasteboardMime", referenced from:
      typeinfo for RectangularPasteboardMime in libqscintilla2_qt5.a(MacPasteboardMime.o)

Answer 1

当Qt静态构建时，需要在* .pro文件中添加 QT + = macextras 。我不知道为什么，但是当程序是在普通共享的Qt中构建时，它没有 macextras 。