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

Thierry Crozat criezy at scummvm.org
Mon May 25 13:43:30 CEST 2015


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   This appears to be significantly outdated and refers to svn.ps2dev.org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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