When I install plplot 5.9.4 with MS Visual Studio 2008 I get the 
following errors:

Scanning dependencies of target test_dyndrivers
[ 84%] Generating test_dyndrivers_dir/cgm.rc
[ 84%] Generating test_dyndrivers_dir/qt.rc
Could not read symbol plD_DEVICE_INFO_qt in driver module qt
libltdl error: No error information
NMAKE : fatal error U1077: '.\test-drv-info.exe' : return code '0x1'
Stop.
NMAKE : fatal error U1077: '"c:\Program Files\Microsoft Visual Studio 
9.0\VC\BIN\nmake.exe"' : return code '0x2'
Stop.
NMAKE : fatal error U1077: '"c:\Program Files\Microsoft Visual Studio 
9.0\VC\BIN\nmake.exe"' : return code '0x2'
Stop.

I get past this by just running nmake again, and it "skips" the qt test. 
But after this, when I try to build the qt_example, I get the following 
errors:

1>Linking...
1>qt_PlotWindow.obj : error LNK2019: unresolved external symbol "void 
__cdecl plsetqtdev(class QtExtWidget *)" 
(?plsetqtdev@@YAXPAVQtExtWidget@@@Z) referenced in function "public: 
__thiscall PlotWindow::PlotWindow(class QWidget *)" 
(??0PlotWindow@@q...@pavqwidget@@@Z)
1>qt_PlotWindow.obj : error LNK2019: unresolved external symbol "public: 
__thiscall QtExtWidget::QtExtWidget(int,int,class QWidget *)" 
(??0QtExtWidget@@q...@hhpavqwidget@@@Z) referenced in function "public: 
__thiscall PlotWindow::PlotWindow(class QWidget *)" 
(??0PlotWindow@@q...@pavqwidget@@@Z)
1>qt_PlotWindow.obj : error LNK2019: unresolved external symbol "void 
__cdecl plfreeqtdev(void)" (?plfreeqtdev@@YAXXZ) referenced in function 
"public: virtual __thiscall PlotWindow::~PlotWindow(void)" 
(??1PlotWindow@@u...@xz)
1>qt_PlotWindow.obj : error LNK2019: unresolved external symbol "public: 
void __thiscall QtPLWidget::clearWidget(void)" 
(?clearwid...@qtplwidget@@QAEXXZ) referenced in function "public: void 
__thiscall PlotWindow::plotCurves(void)" (?plotcur...@plotwindow@@QAEXXZ)
1>qt_PlotWindow.obj : error LNK2019: unresolved external symbol "public: 
void __thiscall QtExtWidget::captureMousePlotCoords(double *,double *)" 
(?capturemouseplotcoo...@qtextwidget@@qaexp...@z) referenced in function 
"public: void __thiscall PlotWindow::interactive(void)" 
(?interact...@plotwindow@@QAEXXZ)

I did some googling and found out that the above errors has something to 
do with the dynamic drivers, so I figured I should try to get rid off 
the errors during plplot install, but I can't seem to find a way to do 
that. I have cmake 2.6.4 and Qt 4.5.2 installed if that helps you to 
think of a reason why the qt dynamic driver doesn't get installed properly.

Thanks.

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