windows - unresolved external symbol _loadlibrarya_@4 and _getprocaddress_@8 in Fortran -


i have problems fortran when accessing external dll. i'm not familiar fortran. error showing here stdcall external loadlibrarya, getprocaddress. code below:

subroutine getdllentrypoint (entrypoint,modulename)    stdcall external loadlibrarya, getprocaddress  !error here    integer*4 loadlibrarya, getprocaddress    integer*4 pl,  plvalue, entrypoint    integer *4 pm    character*100 libraryname, modulename    entrypoint=0    libraryname = "my.dll"//char(0)    pl = loc(libraryname)    plvalue = loadlibrarya(val(pl))    if (plvalue.ne.0)    pm = loc(modulename)    entrypoint = getprocaddress (val(plvalue), val(pm))    endif    return    end

the error in absoft fortran compiler is: 

 error lnk2001: unresolved external symbol _loadlibrarya_@4   error lnk2001: unresolved external symbol _getprocaddress_@8


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