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X-Authentication-Warning: localhost.localdomain: ronald owned process doing -bs
Date: Wed, 14 May 2003 12:29:21 +0200 (CEST)
From: Ronald Landheer-Cieslak <ronald AT landheer DOT com>
X-X-Sender: ronald AT localhost DOT localdomain
To: RomikB <romikb AT mail DOT ru>
cc: cygwin AT cygwin DOT com
Subject: Re: DLL creating problem
In-Reply-To: <10212936061.20030513223900@mail.ru>
Message-ID: <Pine.LNX.4.44.0305141206410.1481-100000@localhost.localdomain>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

ELF is a Linux format - that won't work in any case.
(remember: Cygwin is a DLL that allows Windows programs to use POSIX 
functions, but they're still Windows programs)

You'll also have to use the -mno-cygwin switch to disable the use of the 
Cygwin DLL as a runtime library, and make sure your calling conventions in 
asm match those in the CRT you use (if using -mno-cygwin, the CRT would be 
MSVCRT).

Now, without having tested this, that should boil down to:
$ nasm -f win32 -o file_asm.o file_asm.asm
$ gcc -c file_c.c -o file_c.o
$ gcc -mno-cygwin -shared -o file_dll.dll 
      -Wl,--out-implib=libfile_dll.dll.a  
      -Wl,--export-all-symbols 
      -Wl,--enable-auto-import 
      -Wl,--whole-archive file_asm.o file_c.o 
      -Wl,--no-whole-archive 
      -Wl,--output-def=libfile_dll.dll.def

I've tried this with the code you provided but the asm doesn't compile - 
fixing that is up to you. I tried some other assembler code and got a 
valid Win32 DLL that didn't depend on Cygwin

HTH

rlc

On Tue, 13 May 2003, RomikB wrote:

> Hello All,
> 
> I have a problem when trying to create a DLL.
> 
> For Ex:
> 
> i have two source files: file_asm.asm , file_c.c
> 
> ------file_asm.asm-------
> global _function_asm
> extern _printf
> section .text
> _function_asm:
>   push dword str
>   call _printf
>   add esp,0x04
>   mov ecx,0x1000
>   mov edi,bss_data
>   rep stosd
>   ret
> section .data
>   str db "String2print",0
> section .bss
>   bss_data resd 0x1000
> ------file_c.c------
> void function_c(void){
> }
> --------------------
> 
> I need to create a DLL(no-cygwin)
> 
> compile:
>   nasm -f format -o file_asm.o   {format = elf | win32 | coff }
>   gcc -c file_c.c -o file_c.o
> 
> link:
>   i use:
>      gcc -shared ...
>      ld -shared ...
>      gcc -mdll ...
>      ld -dll ...
>      dllwrap ...
>   but i can't create a true dll
> 
>   some switches creates not a dll.
> 
>   other creates a "wrong" dll. It has a section size problem and not
>   working under the windowsXP or 2k. ( format == elf )
>   or create a "incorrect" dll. It have a
>      mov edi,bss_data+something   instead of   mov edi,bss_data
>   (format == win32 or coff)
> 
>   please, give me a hint. How can i create a DLL.
> 
> 




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