From: Richard Dawe <richdawe AT bigfoot DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Problems compiling libwin
Date: Tue, 06 Jun 2000 19:41:54 +0100
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hello.

Krish Karthik wrote:
> I downloaded libwin 0.1.3 recently and applied the patch for GCC
> 2.95 also.

This is a known problem. I have not generated a patch yet, but if you
follow the instructions in the text below, it should compile:

[Excerpt from mail]
| > I downloaded libwin, applied the patch for gcc 2.95, but still got
| > compilation errors:
|
| The compilation errors are due to the version of binutils you are using.
| I guess you are using binutils 2.9.5.1 beta version. The reason that the
| compilation fails is that the syntax of the inline assembly has changed
| between binutils versions.
|
| > gcc -Wall -Werror -I../include -I. -c vxd.c -o vxd.o
| > c:/djgpp/tmp\ccDfeUoa.s: Assembler messages:
| > c:/djgpp/tmp\ccDfeUoa.s:20: Error: suffix or operands invalid for
| `int'
|
| Please change every occurence of:
|
| intb $0x2f
|
| to:
|
| int $0x2f
|
| > c:/djgpp/tmp\ccDfeUoa.s:151: Warning: Indirect lcall without `*'
|
| Please change the argument of lcall so it has * in front of it, e.g.
|
| lcall _GlobalEntry
|
| becomes
|
| lcall *_GlobalEntry
|
| > c:/djgpp/tmp\ccDfeUoa.s:261: Warning: using `%ebx' instead of `%bx'
| > due to `l' suffix
|
| This warning is OK - you can ignore it.
|
| All these changes are to src/vxd.c. In src/vxdldr.c you will also need
| to change:
|
| lcall %%cs:_vxdldr_entry
|
| to:
|
| lcall *%%cs:_vxdldr_entry
[End excerpt]

This has been reported to work. I have not tried it, however. Similar
changes fixed up libsocket's code, so I am confident it will work.

Since then I have discovered that if you add * to the parameter of lcall,
then the code will not build with binutils 2.8.1. If you leave out the '*'
from the parameter of lcall, then gas (from binutils) will generate the
right code. A warning will be printed, but you can ignore this (the
assembly code is OK).

Hope this helps, bye,

-- 
Richard Dawe
richdawe AT bigfoot DOT com ICQ 47595498 http://www.bigfoot.com/~richdawe/