未解析的静态Qwt构建外部链接

unresolved external linking to static Qwt build

本文关键字：构建 外部 链接 Qwt 静态      更新时间：2023-10-16

我试图链接到Qwt的静态构建。为了创建静态构建，我修改了qwtconfig.pri以包含

#QWT_CONFIG += QwtDll

，我删除了代码中所有的#define QWT_DLL引用。

然而，当我链接到库时，我得到一堆未定义的引用抱怨QSvgRenderer:

15>qwt.lib(qwt_symbol.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: __cdecl QSvgRenderer::QSvgRenderer(class QObject *)" (__imp_??0QSvgRenderer@@QEAA@PEAVQObject@@@Z) referenced in function "public: void __cdecl QwtSymbol::setSvgDocument(class QByteArray const &)" (?setSvgDocument@QwtSymbol@@QEAAXAEBVQByteArray@@@Z)
15>qwt.lib(qwt_symbol.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual __cdecl QSvgRenderer::~QSvgRenderer(void)" (__imp_??1QSvgRenderer@@UEAA@XZ) referenced in function "public: virtual void * __cdecl QSvgRenderer::`scalar deleting destructor'(unsigned int)" (??_GQSvgRenderer@@UEAAPEAXI@Z)
15>qwt.lib(qwt_symbol.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: bool __cdecl QSvgRenderer::isValid(void)const " (__imp_?isValid@QSvgRenderer@@QEBA_NXZ) referenced in function "void __cdecl qwtDrawSvgSymbols(class QPainter *,class QPointF const *,int,class QSvgRenderer *,class QwtSymbol const &)" (?qwtDrawSvgSymbols@@YAXPEAVQPainter@@PEBVQPointF@@HPEAVQSvgRenderer@@AEBVQwtSymbol@@@Z)
15>qwt.lib(qwt_symbol.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: class QRectF __cdecl QSvgRenderer::viewBoxF(void)const " (__imp_?viewBoxF@QSvgRenderer@@QEBA?AVQRectF@@XZ) referenced in function "public: virtual class QRect __cdecl QwtSymbol::boundingRect(void)const " (?boundingRect@QwtSymbol@@UEBA?AVQRect@@XZ)
15>qwt.lib(qwt_symbol.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: bool __cdecl QSvgRenderer::load(class QByteArray const &)" (__imp_?load@QSvgRenderer@@QEAA_NAEBVQByteArray@@@Z) referenced in function "public: void __cdecl QwtSymbol::setSvgDocument(class QByteArray const &)" (?setSvgDocument@QwtSymbol@@QEAAXAEBVQByteArray@@@Z)
15>qwt.lib(qwt_symbol.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __cdecl QSvgRenderer::render(class QPainter *,class QRectF const &)" (__imp_?render@QSvgRenderer@@QEAAXPEAVQPainter@@AEBVQRectF@@@Z) referenced in function "public: void __cdecl QwtSymbol::drawSymbol(class QPainter *,class QRectF const &)const " (?drawSymbol@QwtSymbol@@QEBAXPEAVQPainter@@AEBVQRectF@@@Z)
15>qwt.lib(qwt_symbol.obj) : error LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __cdecl QSvgRenderer::metaObject(void)const " (?metaObject@QSvgRenderer@@UEBAPEBUQMetaObject@@XZ)
15>qwt.lib(qwt_symbol.obj) : error LNK2001: unresolved external symbol "public: virtual int __cdecl QSvgRenderer::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@QSvgRenderer@@UEAAHW4Call@QMetaObject@@HPEAPEAX@Z)
15>qwt.lib(qwt_symbol.obj) : error LNK2001: unresolved external symbol "public: virtual void * __cdecl QSvgRenderer::qt_metacast(char const *)" (?qt_metacast@QSvgRenderer@@UEAAPEAXPEBD@Z)
15>C:workspacefixQwtexecutableslinkerGUIbinReleaselinkerGUI.exe : fatal error LNK1120: 9 unresolved externals

是否有其他的东西在项目配置，我需要这样做，它可以正确地链接到QSvgRenderer ?

猜测您的Qt版本没有SVG支持-或者您忘记将其添加到项目依赖项中。如果您对SVG的东西不感兴趣，您也可以在qwtconfig中禁用它。

参见:"QWT_CONFIG += QwtSvg"

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