RE: [Tuxnes-devel] Trying to build on OpenBSD 2.9

[HUYNH,SONTRI (HP-Richardson,ex1) <son...@hp...>]

> 	I admit, I don't know much about the build system on BSD
> systems. Is it all the same as GNU systems? Anyway, try placing:
> .extern LASTBANK
> near the top of x86.S.

Here is some preliminary info:
Reading specs from /usr/lib/gcc-lib/i386-unknown-openbsd2.9/2.95.3/specs
gcc version 2.95.3 20010125 (prerelease)

GNU assembler version 1.92.3, OpenBSD $Revision: 1.2 $

OpenBSD uses a gnu toolchain, and for those that don't know, OpenBSD/i386
uses the a.out format rather than ELF which most use now.  Sometimes there
are directives that are different for different object formats.

I added ".extern LASTBANK" after #include "mapper.h" (doesn't seem to matter
where I placed it) and still got the same output as before:
x86.S: Assembler messages:
x86.S:1672: Error: Local symbol LASTBANK never defined.
x86.S:1672: Fatal error:1 error, 0 warnings, no object file generated.

From what documentation I could find for gas:
.extern is accepted in the source program---for compatibility with other
assemblers---but it is ignored. as treats all undefined symbols as external.


I think that's why it's not already .extern'd in any way in the src
currently, but
for some reason, my gas doesn't like LASTBANK for some reason, and if I
comment
out the LASTBANK lines, then x86.o builds.. but correct me if I'm wrong,
LASTBANK
isn't the only undefined external symbol in x86.S, but for some reason it is
having a problem with LASTBANK in particular.

Actually.. (sorry, this email is following my train of actions) I just
commented out
the #include lines of x86.S and it builds fine.  In fact, I only have to
comment out
"#define _LASTBANK LASTBANK      /* Last memory page code executed in */"
from 
mapper.h.  

Does this make sense to anyone?

Tomo