Linker Tools Error LNK1120
number unresolved externals
Error LNK1120 gives you a count (number) of unresolved externals for this link. The conditions that cause unresolved externals are described with error LNK2001, which precedes this error message (once for each unresolved external).
For more information, see https://support.microsoft.com/default.aspx?scid=kb;en-us;815650.