PS C:\EPANET_DLL> nmake /f epanet2.mak
Microsoft (R) Program Maintenance Utility Version 6.00.8168.0
Copyright (C) Microsoft Corp 1988-1998. All rights reserved.
No configuration specified. Defaulting to epanet2 - Win32 Release.
Warning: cannot find "epanet2.dep"
NMAKE : fatal error U1073: don't know how to make '"..\epanet2.def"'
Stop.