[request] ebuild for lzma

martinus · n00b Joined: 13 Jul 2002 Posts: 50

Hi! could someone more knowledgable then I create an ebuild for the LZMA project and submit it to https://bugs.gentoo.org/ ? LZMA offers better compression ratio and faster decompression than bzip2.

The LZMA project can be found here: http://martinus.geekisp.com/rublog.cgi/Projects/LZMA

This should be pretty simple, as LZMA does not depend on anything except make and gcc.

moocha · Watchman Joined: 21 Oct 2003 Posts: 5722

But why not just use p7zip (the Linux port of 7-zip, which is where the original LZMA SDK comes from)? The author of LZMA explicitely says he's not interested in further maintaining the project...
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"Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety."
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martinus · n00b Joined: 13 Jul 2002 Posts: 50

The reason I cannot use p7zip is that it is not stream based. I need something that can be used in pipes, like LZMA. The reason the author (me) does not want to work on it any more, is that it just works as intended :-)

moocha · Watchman Joined: 21 Oct 2003 Posts: 5722

moocha · Watchman Joined: 21 Oct 2003 Posts: 5722

OK, I should have read the docs closer. Apparently you can't use -si and -so on the same command line, so p7zip pipe support indeed does work like a charm, i.e. it doesn't exist at all. Shame on me, and I apologize.
I'll look into slapping together an ebuild.
_________________
Military Commissions Act of 2006: http://tinyurl.com/jrcto

"Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety."
-- attributed to Benjamin Franklin

moocha · Watchman Joined: 21 Oct 2003 Posts: 5722

Done. Had to patch AriBitCoder.h (GCC 3.4.x is a bit stricter about its adherence to standards and it complained about obsolete template constructs). Also had to change the makefile so it picks up Gentoo's CFLAGS etc.

Bugzilla entry is here: https://bugs.gentoo.org/show_bug.cgi?id=76627
_________________
Military Commissions Act of 2006: http://tinyurl.com/jrcto

"Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety."
-- attributed to Benjamin Franklin

moocha · Watchman Joined: 21 Oct 2003 Posts: 5722

I forgot: I'm not sure under what license you're releasing this application. The README seemed to be suggesting LGPL so I put that in, but I suspect that notice comes from the LZMA SDK. It might be best to include a COPYING file that explains what parts of your program are covered by what license. Please add to the abovementioned bug if you do that.
If you choose to include such a file in the distribution tarball please bump its version number, don't simply change the original 0.02 tarball because if by then the ebuild has made it into the portage tree and the tarball into the distfiles mirrors you'd be causing digest mismatches.
If you bump the app version then it might be a good idea to include the GCC 3.4 patch (I hereby release it into the public domain, so do whatever you want with it, no strings attached - this just to get the legal blahblah out of the way). It shouldn't cause problems for GCC 3.3 and older.
Please don't include the Makefile patch however since that's Gentoo-specific and should reside only in the portage tree.
_________________
Military Commissions Act of 2006: http://tinyurl.com/jrcto

"Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety."
-- attributed to Benjamin Franklin

martinus · n00b Joined: 13 Jul 2002 Posts: 50

Wow, that was quick. Thanks a lot! I will add a COPYING file as soon as I have time.