Hi Yamin, Without actually testing it, I suspect if you used concat32.exe to append (say) ten objects together, when the linker links against the multi-object file, it'll only find-and-use whichever object file happens to be first in the file. Just like concatenating data on the end of a MS-Excel spreadsheet file (.xls), I wouldn't expect MS-Excel to notice that there's additional information in the file. Let alone, what to do with it. HTH, --Eljay