我在Qt 下一个从网上下载的程序：出现如下错误提示怎么回事
ld: warning: ignoring file ../../bin/libwkhtmltox.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: ignoring file /Developer/qt/lib/QtWebKit.framework/QtWebKit, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: ignoring file /Developer/qt/lib/QtSvg.framework/QtSvg, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: ignoring file /Developer/qt/lib/QtGui.framework/QtGui, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: ignoring file /Developer/qt/lib/QtCore.framework/QtCore, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: ignoring file /Developer/qt/lib/QtXmlPatterns.framework/QtXmlPatterns, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: ignoring file /Developer/qt/lib/QtNetwork.framework/QtNetwork, file was built for unsupported file format which is not the architecture being linked (i386)
Undefined symbols for architecture i386:
"QString::codecForCStrings", referenced from:
qStringComparisonHelper(QString const&, char const*)in manoutputter.o
qStringComparisonHelper(QString const&, char const*)in imagecommandlineparser.o
qStringComparisonHelper(QString const&, char const*)in manoutputter.o
qStringComparisonHelper(QString const&, char const*)in imagecommandlineparser.o
"qFree(void*)", referenced from:
QByteArray::~QByteArray()in manoutputter.o
