[g7z] Re: 7-Zip (cross posting)

I am cross posting this to make it available at gcc7zip archives

cheers
- biju
====================================================

Date:	 Tue, 14 Oct 2003 18:57:13 +0200
From:	"Lapo Luchini" 
To:	Mailing List@,
Subject:	Re: 7-Zip
	

Lapo Luchini wrote:

> Biju G C wrote:
>
>> I wish there is somebody to port this.
>>
>> As per Igor Standalone command line version in folder
>>  Project\archiver\bundle\Alone\     will be easy to port
>
> I made a try at it, once.. but it has lotsa subdirectories and 
> libraries... without working Makefiles is not-so-easy to figure out 
> how to compile.
> Moreover the source code is written so "Windows-like" 
> (and I know *no* 
> Windows programming) that I can't understand which part 
> of the code is 
> Windows-specific and which one just uses Windows names for "normal 
> things"...

OK, I didn't know that .dsp could be translated "easily" to 
Makefiles (I can't find any program that does so *and* works, 
though) but fortunately Filip knew it and did a "unsupported" patch.

I upgraded that to apply to 7-zip 3.11 clean source 
(using cygwin in -mno-cygwin mode, while his patch used mingw) 
so that a 7za.exe "stand alone executable" can be created with
cygwin's gcc.

As Biju said in an earlier message, 
this is at least the beginning...

BTW: 7za.exe is much more like zip.exe than gzip.exe, 
as it is an archivier, not simply a compressor.
Could be interesting to "extract" a compressor from it, 
and maybe adapt tar to use it, too.

PS: strangely enough, the file is much much bigger 
(almost the double) and also a little slower 
(even if using -O3 -march=i686 it is 2x size an 
10% slower than the original anyway)
I don't want to believe that VisualC is 
better than gcc-3.3 =(

-- 
Lapo 'Raist' Luchini
[email protected] (PGP & X.509 keys available)
http://www.lapo.it (ICQ UIN: 529796)



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