qtmaind.lib（qtmain_win.obj） : warning LNK4099: PDB 'vc_ib_1.pdb' was not found

[paie]

Here is the whole warning message.

qtmaind.lib(qtmain_win.obj) : warning LNK4099: PDB 'vc_ib_1.pdb' was not found with 'c:\QtSDK\Desktop\Qt\4.7.4\msvc2008\lib\qtmaind.lib' or at 'C:\Code\Projects\bitsdir\bits-build\debug\vc_ib_1.pdb'; linking object as if no debug info

qtmaind.lib(qtmain_win.obj) : warning LNK4099: PDB 'vc_ib_1.pdb' was not found with 'c:\QtSDK\Desktop\Qt\4.7.4\msvc2008\lib\qtmaind.lib' or at 'C:\Code\Projects\bitsdir\bits-build\debug\vc_ib_1.pdb'; linking object as if no debug info

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Everything seems to compile and run fine, and I can single step the code and see variable values changing as I step the code, but I would like to have clean builds.

Any ideas?