error LNK2019 only with x64 platform

pierangelo_f_ · ‎12-20-2006

I have a fortran main program that call the 'atof' c function.

program Console1
implicit noneinterfacedouble precision function atof(string)
!DEC$ATTRIBUTES ALIAS : '_atof' :: atofcharacter*(*) string
end function atof
end interface! Variablescharacter*128 string
double precision ff
! Body of Console1string='123.e+23'
ff = atof(string//char(0))
print *,ff
end program Console1

If I compile it for the WIN32 platform I have no problems, the EXE is generated.

If I compile it for the x64 platform I get the error LNK2019 for the _atof external reference.

Probably I have the MS Visual Studio (2005) badly configured.

Does anyone have a solution project that works correctly with WIN32 and X64 platform?

Thanks.

Steven_L_Intel1 · ‎12-20-2006

On x64, the convention is no leading underscore. Try this instead:

!DEC$ATTRIBUTES DECORATE, ALIAS : 'atof' :: atof