[Scummvm-devel] Compiling a new build of ScummVM for PS2 question.

max at guetech.com max at guetech.com
Mon May 25 16:34:01 CEST 2015


Hi Thierry,

>> There is a recent build for 1.7.0 on sf.net, which is not linked from our download page, and does not work anyway.

Did you try it ?

It works here and for the couple of testers I sent it to before uploading.

There are actually all builds from 1.4.1 to 1.7.0 on SF. I asked Sev to make them public on scummvm.org.

If there is a regression where it stops working please do a regression and let me know which is the first one which does not work.

Thanks,
-max

---------------------------- Original Message ----------------------------
Subject: Re: [Scummvm-devel] Compiling a new build of ScummVM for PS2 question.
From:    "Thierry Crozat" <criezy at scummvm.org>
Date:    Mon, May 25, 2015 7:43 am
To:      "digitall at scummvm.org" <digitall at scummvm.org>
Cc:      "Jeffrey Paull" <obuggy1 at cox.net>
         "ScummVM devel" <scummvm-devel at lists.sourceforge.net>
--------------------------------------------------------------------------

> For more information, the discussion on IRC happened on May 18, starting at 22:43 GMT. You can find it here:
> http://logs.scummvm.org/log.php?log=scummvm.log.18May2015&format=html
>
> In particular:
>  - Builds on buildbot do not work.
>  - The official build for 1.4.1, which is the one on our download page works.
>  - There is a recent build for 1.7.0 on sf.net, which is not linked from our download page, and does not work anyway.
>
>
> On 25 May 2015, at 08:38, Filippos Karapetis <bluegr at gmail.com> wrote:
>
>> I've updated the PS2 build instructions in our wiki with digitall's information
>>
>> Regards
>> Filippos Karapetis
>>
>> On Mon, May 25, 2015 at 6:32 AM, D G Turner <d.g.turner at ntlworld.com> wrote:
>> OMightyBuggy,
>>   As the PS2 porter does not seem to be responding currently, I thought
>>   I should provide some helpful pointers to allow you to compile a new
>>   PS2 build and perhaps help debug any issues with current code.
>>
>>   This is partly as I am one of the buildbot maintainers.
>>
>>   Firstly, the nightly development (v1.8.0git) and stable (v1.7.0)
>>   builds for PS2 can be found here:
>>   http://buildbot.scummvm.org/builds.html
>>
>>   Please test with these and let us know whether these works correctly
>>   for you. If not, I can still use the toolchain there to try a v1.5.0
>>   build and a replicated v1.4.1 to check if this is a code regression or
>>   a toolchain / library breakage.
>>
>>   Apart from this, I assume that you are following:
>>   http://wiki.scummvm.org/index.php/Compiling_ScummVM/PlayStation_2
>>
>>   This appears to be significantly outdated and refers to svn.ps2dev.org
>>   which appears to be offline. The new location for this code is at
>>   Github as various repositories: https://github.com/ps2dev
>>
>>   The code there should allow you to build a toolchain from source
>>   and contains patched version of various libraries as:
>>   https://github.com/ps2dev/ps2sdk-ports
>>
>>   However, this does not contain SJPCM or Tremor, which the compilation
>>   page suggests you e-mail the maintainer for :/
>>
>> http://wiki.scummvm.org/index.php/Compiling_ScummVM/PlayStation_2#d._Nearly_there.21_Now_we_still_need_some_extra_libs_which_are_not_provided_with_default_SDK:
>>
>>   On a side note, these kind of patches should be checked into some
>>   repository on Github or otherwise made available in future.
>>
>>   Tremor which is the integer code version of Ogg Vorbis is not an issue
>>   as it is available from here, but not in a specific PS2 optimised
>>   version:
>>   https://wiki.xiph.org/Tremor
>>
>>   Based on the background information from various Wikipedia pages:
>>   https://en.wikipedia.org/wiki/PlayStation_2
>>   https://en.wikipedia.org/wiki/Emotion_Engine
>>
>>   The PS2 uses a MIPS instruction set and as the Tremor page notes
>>   there are no specific optimisations in the codebase for MIPS, but
>>   it should still work fine if compiled for that target with the PS2
>>   toolchain. Any patches are likely to have been as noted by the
>>   Tremor page:
>>   "the main branch will probably give very good performance if CPU
>>   optimized fixed point multiply and complex multiply functions are
>>   added."
>>
>>   SJPCM is a bit tricker to find, but is described by this:
>>   http://lukasz.dk/playstation-2-programming/an-introduction-to-ps2dev/
>>
>>   I was able to locate the independent version of it from here:
>>   https://github.com/AzagraMac/PS2_SDK/tree/master/isjpcm
>>
>>   This should be sufficient for you to be able to setup your own
>>   toolchain and compile the code if you are familar with cross
>>   compilation under Linux.
>>
>>   Hopefully the PS2 porter can provide the exact patches and code
>>   at some point soon.
>> Thanks,
>> David Turner
>>
>> On 18/05/15 23:55, Jeffrey Paull wrote:
>> > I am looking for some help with obtaining "sjcpm & tremor" for compiling
>> > a new ScummVM build for PS2. I already contacted sunmax at libero.it and
>> > got no response. I went to the IRC and got directed here to ask.
>> >
>> > OMightyBuggy
>>
>>
>>
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>>
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