Hello,

I'm evaluating the DM C compiler for use in porting old MS DOS C v6.0 code. When I try to compile/ling the example code from the dos.h _dos_findfirst example I get:


d:\c60\test>sc ffirst.c
link ffirst,,,user32+kernel32/noi;
OPTLINK (R) for Win32  Release 7.50B1
Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved

ffirst.obj(ffirst)
 Error 42: Symbol Undefined __dos_findfirst
ffirst.obj(ffirst)
 Error 42: Symbol Undefined __dos_findnext

--- errorlevel 2

Does anyone have any suggestions as to what I might be doing wrong?


Thanks for any help. Here's the example code:

 /*      Example for _dos_findfirst and _dos_findnext         */
        #include <dos.h>
        #include <stdio.h>
        #include <stdlib.h>

        void list_name( struct find_t fileinfo)
        {
                int result;
                result = _dos_findnext (& fileinfo);
                if (result == 0)
                {
                   printf ("% s\n", fileinfo. name);
                   list_name (fileinfo);
                }
                else
                   printf ("List done\n");
        }
        void main()
        {
                int result;
                struct find_t ffblk;

                result = _dos_findfirst ("*.dat", _A_NORMAL,
                                           &ffblk);
                if (result == 0)
        {
                printf ("% s\n", ffblk. name);
                list_name (ffblk);
        }
        else
                printf ("No files match *.dat\n");
        }

You will have to compile with
sc -ml ffirst.c
Or other compiler flags that generate a DOS executable.
sc now by default generates a Win32 executable. Win32 does not have
_dos_findfirst or _dos_findnext.

HTH

Jan



"Victor P. Dura" wrote:

> Hello,
>
> I'm evaluating the DM C compiler for use in porting old MS DOS C v6.0 code. When I try to compile/ling the example code from the dos.h _dos_findfirst example I get:
>
> d:\c60\test>sc ffirst.c
> link ffirst,,,user32+kernel32/noi;
> OPTLINK (R) for Win32  Release 7.50B1
> Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
>
> ffirst.obj(ffirst)
>  Error 42: Symbol Undefined __dos_findfirst
> ffirst.obj(ffirst)
>  Error 42: Symbol Undefined __dos_findnext
>
> --- errorlevel 2
>
> Does anyone have any suggestions as to what I might be doing wrong?
>
> Thanks for any help. Here's the example code:
>
>  /*      Example for _dos_findfirst and _dos_findnext         */
>         #include <dos.h>
>         #include <stdio.h>
>         #include <stdlib.h>
>
>         void list_name( struct find_t fileinfo)
>         {
>                 int result;
>                 result = _dos_findnext (& fileinfo);
>                 if (result == 0)
>                 {
>                    printf ("% s\n", fileinfo. name);
>                    list_name (fileinfo);
>                 }
>                 else
>                    printf ("List done\n");
>         }
>         void main()
>         {
>                 int result;
>                 struct find_t ffblk;
>
>                 result = _dos_findfirst ("*.dat", _A_NORMAL,
>                                            &ffblk);
>                 if (result == 0)
>         {
>                 printf ("% s\n", ffblk. name);
>                 list_name (ffblk);
>         }
>         else
>                 printf ("No files match *.dat\n");
>         }