On Wed, Jan 9, 2013 at 3:56 AM, Gustavo Sverzut Barbieri
<[email protected]> wrote:
> On Tue, Jan 8, 2013 at 7:14 AM, Arvind R <[email protected]> wrote:
>
>> On Tue, Jan 8, 2013 at 2:18 AM, Gustavo Sverzut Barbieri
>> <[email protected]> wrote:
>> > On Mon, Jan 7, 2013 at 9:14 AM, Arvind R <[email protected]> wrote:
>> >
>> >> Hi all,
>> >>
>> >> After getting xine backend working in emotion, tried generic (vlc)
>> >> backend. Nope - doesn't work -:(
>> >>
>> >> Problem 1: Using the example source, now need to add:
>> >> emotion_object_module_option_set(em, "player", "vlc");
>> >>
>> >> It does not fall-back to the default generic player.
>> >>
>> >> Problem 2:
>> >> em_player_vlc cannot be found, because generic_module_init() fails to
>> >> set the prefixes proper.
>> >>
>> >> So put printf() and recompiled. (Is there is a small howto on the eina
>> >> logging system?) Output:
>> >>
>> >> evas engine: <auto>
>> >> emotion backend: generic
>> >> vis: 0
>> >> geometry: 0 0 960x540
>> >> generic_module_init: initing libdir to /usr/lib/x86_64-linux-gnu
>> >>
>> >
>> > this seems wrong already, is it PACKAGE_LIB_DIR? why does it contain
>> > x86_64-linux-gnu? in Makefile.am it's just $(libdir), did you specify
>> > something with --libdir?
>> >
>> Yes. '$prefix/lib/$DEB_ARCH. The x86_64-linux-gnu is correct.
>> >
>> >
>> >> generic_module_init: got libdir /usr/lib/lib
>> >>
>> >
>> > yet another very weird result. double "lib" in the path? Where are you
>> > installing these things?
>> >
>> > eina_prefix_new() will use the given symbol (emotion_object_add) and
>> dladdr
>> > to know which file it came from. Should be the libemotion.so. Then it
>> gets
>> > the directory where libemotion.so is contained, should be /usr/lib if
>> it's
>> > /usr/lib/libemotion.so. Then it will remove the "lib" part to get the
>> > prefix, later adding this again (this is what it should do, did not test
>> to
>> > see if it's correct).
>> >
>> Ah-ah! The logic is IMHO, wrong! My installation is a multiarch debian
>> install. The x86_64 libdir is '/usr/lib/x86_64-linux-gnu' and 32-bit
>> version in 'usr/lib32' on a x86_64-linux-gnu system and '/usr/lib/' on
>> a 'x86-linux-gnu' system. The modules get installed in sub-dirs of the
>> library, e.g. libemotion.so gets installed in
>> '/usr/lib/x86_64-linux-gnu/' and emotion modules in
>> '/usr/lib/x86_64-linux-gnu/emotion/'.
>>
>
> ok, got it and from this commit it seems to be handled
> http://trac.enlightenment.org/e/changeset/74709
>
> (I mean the message, not the logic, will check that later).
>
>
>
>> This makes the 'MODULE_ARCH' variable in autoconf files unnecessary;
>>
>
> not really as it also includes efl version. Also will allow installing to
> shared /usr, like NFS used by multiple platforms (ppc, x86...)... in
> theory, because in practice half of EFL doesn't conform with that (emotion,
> ecore_imf, eeze/sensors, evas cserve2 binaries, efreet binaries...). I plan
> to fix those soon.
>
Maybe --enable-versioned-install? Anyway, what i mean is install the
modules in a sub-directory of libdir. I have evas|ecore-evas|...
installed in /usr/lib/x86_64-linux-gnu/evas|ecore-evas|... ; not in
/usr/lib/e.../x86_64-linux-gnu.

Maybe make versioned-install an option?
>
>
>> and, as I have on my system (untested -:(), a lib32 AND a x86_64
>> installation possible. This will conform to most packaging systems
>> AFAIK, and definitely to Debian.
>> If the logic is modified to scan from right to left the absence of
>> '^lib' substring to get the prefix, and later add ALL the subsequent
>> parts, all will be fine. Better still, have eina_prefix_new take the
>> $PREFIX value too to enable a left-to-right scan.
>>
>
>
> I'll check the logic, but it's worth for you to check if you have that
> patch in your version.
>
The changeset is there in eina. The problem showed up while I was
debugging emotion. svn81558 did not have the problem - it showed up
svn82296 of emotion. The previous (81558) loaded the em_generic_vlc
all right, but 82296 does not find it due to the /usr/lib/lib . I
presume the use of eina_prefix_new in emotion is new, and it breaks
it.

 Arvind

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