<p>I'm trying to link a Qt application with its libraries and the linker (MinGW) spews hundreds of lines like the following, and I am unsure how to proceed.</p>

<pre>
 cpp: undefined reference to `_Unwind_SjLj_Register'
 c:/qt/lib/libQtCore.a(qcoreapplication_win.o)(.text+0x29d):qcoreapplication_win.
 cpp: undefined reference to `_Unwind_SjLj_Unregister'
 c:/qt/lib/libQtCore.a(qcoreapplication_win.o)(.text+0x38c):qcoreapplication_win.
 cpp: undefined reference to `_Unwind_SjLj_Resume'
 c:/qt/lib/libQtCore.a(qcoreapplication_win.o)(.text+0x4ce):qcoreapplication_win.
 cpp: undefined reference to `_Unwind_SjLj_Register'
 c:/qt/lib/libQtCore.a(qcoreapplication_win.o)(.text+0x53e):qcoreapplication_win.
 cpp: undefined reference to `_Unwind_SjLj_Unregister'
 c:/qt/lib/libQtCore.a(qcoreapplication_win.o)(.text+0x635):qcoreapplication_win.
 cpp: undefined reference to `_Unwind_SjLj_Resume'
</pre>

It's been a while since I did any Qt development, but there were only a couple instances that I remember spewing out huge numbers of messages like this.
Include files for Qt were a
different version than the shared
libraries ... this happened when I
upgraded and for some reason, you
had to manually upgrade the include
files.
The Qt libraries were missing altogether ... I vaguely remember the compiler working, but the linker failing when I first started.
I was doing Qt development targeted at an ARM processor, so I had extra oddities involved when cross-compiling.