Hello!



I am trying to install VBCC and compile some piece of code, just some examples in C language.

First of all I downloaded the 3.9 NDk from Haage&Partner and saved the NDK_3.9 drawer in my Work: HD partition.

Accordingly with the instructions of the site  

http://sun.hasenbraten.de/vbcc/index.php?view=targets

I downloaded the files vbcc_bin_amigaos68k.lha and vbcc_target_m68k-amigaos.lha that are respectively the binary and the target file.

Installed firstly the bin and after the target over my Work: partition I was asked to tell the installer the path of the include files so I selected the drawer Work:NDK_3.9/include/include_h

as suggested here in the thread

http://www.amiga.org/forums/showthread.php?t=34765



Now it happens that if I try to compile a source like for example the 1st example of screen or window of the file http://aminet.net/package/dev/c/ACM

with the command

vc screen.c -o screen



I have a huge list of errors like showed above....

t_3_0.o: In "_main":

Error 21: t_3_0.o (CODE+0x8): Reference to undefined symbol _OpenLibrary.

t_3_0.o: In "l5":

Error 21: t_3_0.o (CODE+0x24): Reference to undefined symbol _OpenScreen.

t_3_0.o: In "l6":

Error 21: t_3_0.o (CODE+0x3a): Reference to undefined symbol _CloseLibrary.

t_3_0.o: In "l7":

Error 21: t_3_0.o (CODE+0x64): Reference to undefined symbol _CloseLibrary.

Error 21: t_3_0.o (CODE+0x4c): Reference to undefined symbol _Delay.

Error 21: t_3_0.o (CODE+0x58): Reference to undefined symbol _CloseScreen.

vlink failed returncode 20

vlink -bamigahunk -x -Bstatic -Cvbcc -nostdlib vlibos3:startup.o "T:t_3_0.o" -s -Rshort -Lvlibos3: -lvc -o screen failed





What do you think I should do to get the compiler doing his job correctly?



Thanks for your advice,



Daniele

Hello Thomas! Thanks for helping me....

Now I have much less errors and the code works!

I only get:

>    CloseLibrary( IntuitionBase );
warning 85 in line 69 of "screen.c": assignment of different pointers
>  CloseLibrary( IntuitionBase );
warning 85 in line 92 of "screen.c": assignment of different pointers

What else to change to get it work perfectly?

How does the corresponding OpenLibrary look like?

mmmm...

                          I think it would be better to post the source code because I am a very beginner!
                          I am just trying to set up a modern C enviroment to start studying C language and made some exercises.
                         
Thank you very much Thomas I truly appreciate your time and effort!
                         
                          So the piece of code is...

#include

struct IntuitionBase *IntuitionBase;

struct Screen *my_screen;

struct NewScreen my_new_screen=
{
  0,          
  0,            
  320,        
  200,    
  3,    
  0,          
  1,        
  NULL,        
  CUSTOMSCREEN,
  NULL,        
  "MY SCREEN",
  NULL,    
  NULL  
};



main()
{
    IntuitionBase = (struct IntuitionBase *)
    OpenLibrary( "intuition.library", 0 );
 
  if( IntuitionBase == NULL )
    exit();  

  my_screen = (struct Screen *) OpenScreen( &my_new_screen );
 
  if(my_screen == NULL)
  {
 
    CloseLibrary( IntuitionBase );

    exit();  
  }

  Delay( 50 * 30);

  CloseScreen( my_screen );

  CloseLibrary( IntuitionBase );
 
}

Thomas thank you *very* much for your support.

I am now able to compile this sample code and see it working but ... honestly .... what I am really wondering as beginner is if "changes" would always be necessary in the examples I see on the amiga programming books.

Should I always made some fixes in order to get them compiled properly?

Is this depending by the compiler I use or what?

Let me figure out...