I am building Qt4.5 opensource edition on Windows with msvc2008. During nmake stage I got an error while building tds plugin.

c:\libraries\qt\2009.01\qt\src\plugins\sqldrivers\ tds\../../../sql/drivers/tds/qsql_tds.h(53) : fatal error C1083: Cannot open include file: 'sqlfront.h': No such file or directory
NMAKE : fatal error U1077: '"E:\Program Files\Microsoft Visual Studio 9.0\VC\BIN\cl.EXE"' : return code '0x2'
Stop.

I searched the documentation and found out how to build tds plugin separately.

My question is:
I was about 2 hours into building process when it failed. Can I rerun nmake after fixing the problem or I should do cleanup and start from the very beginning? Or, alternatively, is it possible to somehow continue build after nmake failure?

Thanks.