Hi,
I am encounting some issues building QWT on my Windows 7 machine in 64 bits with Visual Studio 2008.

I checked out the 6.0 version of QWT. Then with the 64 bits command prompt of MSVC I do the following command in my QWT directory:
qmake qwt.pro
nmake

And here I got a long list of warning on each .obj file that says :
"warning LNK4049: locally defined symbol..." (sometimes it's LNK4217)

Finally it crashes like that :
"..\lib\qwtd.dll : fatal error LNK1120: 32 unresolved externals
NMAKE : fatal error U1077: 'echo' : return code '0x460'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\amd64\nmake.exe"' : return code '0x2'
Stop.
NMAKE : fatal error U1077: 'cd' : return code '0x2'
Stop."

Thanks for your help.