wxperl-users

[wxperl-users] undefined symbols -- more fun with the mac

[Eric W. <scr...@gm...>]

I'm building an appbundle (with ExtUtils::MacMaker) on 10.4, localizing 
all of the wx dylibs, libperl, .bundles, etc -- but I get this when 
trying to run on a 10.3 mac with no perl installed:

  dyld: .../wxdo.app/Contents/MacOS/wxdo Undefined symbols:
  .../wxdo.app/Contents/Resources/Perl-Libraries/auto/Wx/Html/Html.bundle  
  undefined reference to __Z27wxPli_add_constant_functionPPFdPKciE  
  expected to be defined in a dynamic image

The odd thing is that I only get this when I load something from the 
extensions.  I can use the wxcore from a standalone appbundle without 
any trouble, so it seems like some sort of problem in wxbootstrap().

Unfortunately, apple makes it rather difficult for me to test on a 10.4 
mac with no perl (plus, it seems to be part of the standard install 
now.)

Any thoughts?  If anyone wants to poke at it, just build the wxdo demo 
from here:

  http://scratchcomputing.com/svn/Module-Build-Plugins-MacBundle/trunk/

Thanks,
Eric
-- 
Moving pianos is dangerous.
Moving pianos are dangerous.
Buffalo buffalo buffalo buffalo buffalo buffalo buffalo.
---------------------------------------------------
    http://scratchcomputing.com
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Re: [wxperl-users] undefined symbols -- more fun with the mac

[Mark D. <mar...@zn...>]

Eric,

Take a look at the source for Wx::Perl::Packager on CPAN. Its pure perl
so you should be able to just download and browse.

For any kind of bundling of Wx, you have to tell Wx where it can load
the none core libraries from. Wx has some hooks (via Wx::Mini) that
allow you to do this.

Wx::Perl::Packager does this for PDK and PAR and works (at least to a
basic tested level) for those packaging methods on both Win32 and Linux.

I have access to a 10.3 Mac so if you leave

http://scratchcomputing.com/svn/Module-Build-Plugins-MacBundle/trunk/

I'll use this to see if I can make the necessary changes to
Wx::Perl::Packager so it can help with an appbundle on the Mac. I
probably won't get to this before the weekend though so if you take a
look at what Wx::Perl::Packager does, you might be able to solve the
problem before then.

Of course, I'm making the assumption that this is really the same problem.

Regards

Mark

Eric Wilhelm wrote:
> I'm building an appbundle (with ExtUtils::MacMaker) on 10.4, localizing 
> all of the wx dylibs, libperl, .bundles, etc -- but I get this when 
> trying to run on a 10.3 mac with no perl installed:
> 
>   dyld: .../wxdo.app/Contents/MacOS/wxdo Undefined symbols:
>   .../wxdo.app/Contents/Resources/Perl-Libraries/auto/Wx/Html/Html.bundle  
>   undefined reference to __Z27wxPli_add_constant_functionPPFdPKciE  
>   expected to be defined in a dynamic image
> 
> The odd thing is that I only get this when I load something from the 
> extensions.  I can use the wxcore from a standalone appbundle without 
> any trouble, so it seems like some sort of problem in wxbootstrap().
> 
> Unfortunately, apple makes it rather difficult for me to test on a 10.4 
> mac with no perl (plus, it seems to be part of the standard install 
> now.)
> 
> Any thoughts?  If anyone wants to poke at it, just build the wxdo demo 
> from here:
> 
>   http://scratchcomputing.com/svn/Module-Build-Plugins-MacBundle/trunk/
> 
> Thanks,
> Eric

Re: [wxperl-users] undefined symbols -- more fun with the mac

[Mark D. <mar...@zn...>]

Hmmmm

On reflection, there's so much wrong with my suggestion below that its
difficult to know where to start.

Now, where's that recall button on my email client ......

Of course, it just doesn't work in the way suggested by me below. I'm
hanging up me keyboard before I do some damage.

Regards

Mark

Mark Dootson wrote:
> Eric,
> 
> Take a look at the source for Wx::Perl::Packager on CPAN. Its pure perl
> so you should be able to just download and browse.
> 
> For any kind of bundling of Wx, you have to tell Wx where it can load
> the none core libraries from. Wx has some hooks (via Wx::Mini) that
> allow you to do this.
> 
> Wx::Perl::Packager does this for PDK and PAR and works (at least to a
> basic tested level) for those packaging methods on both Win32 and Linux.
> 
> I have access to a 10.3 Mac so if you leave
> 
> http://scratchcomputing.com/svn/Module-Build-Plugins-MacBundle/trunk/
> 
> I'll use this to see if I can make the necessary changes to
> Wx::Perl::Packager so it can help with an appbundle on the Mac. I
> probably won't get to this before the weekend though so if you take a
> look at what Wx::Perl::Packager does, you might be able to solve the
> problem before then.
> 
> Of course, I'm making the assumption that this is really the same problem.
> 
> Regards
> 
> Mark
> 
> Eric Wilhelm wrote:
>> I'm building an appbundle (with ExtUtils::MacMaker) on 10.4, localizing 
>> all of the wx dylibs, libperl, .bundles, etc -- but I get this when 
>> trying to run on a 10.3 mac with no perl installed:
>>
>>   dyld: .../wxdo.app/Contents/MacOS/wxdo Undefined symbols:
>>   .../wxdo.app/Contents/Resources/Perl-Libraries/auto/Wx/Html/Html.bundle  
>>   undefined reference to __Z27wxPli_add_constant_functionPPFdPKciE  
>>   expected to be defined in a dynamic image
>>
>> The odd thing is that I only get this when I load something from the 
>> extensions.  I can use the wxcore from a standalone appbundle without 
>> any trouble, so it seems like some sort of problem in wxbootstrap().
>>
>> Unfortunately, apple makes it rather difficult for me to test on a 10.4 
>> mac with no perl (plus, it seems to be part of the standard install 
>> now.)
>>
>> Any thoughts?  If anyone wants to poke at it, just build the wxdo demo 
>> from here:
>>
>>   http://scratchcomputing.com/svn/Module-Build-Plugins-MacBundle/trunk/
>>
>> Thanks,
>> Eric
> 
> 
> 
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Re: [wxperl-users] mac panther: undefined symbols in appbundle

[Eric W. <scr...@gm...>]

# from Eric Wilhelm
# on Tuesday 05 December 2006 01:16 am:

>  dyld: .../wxdo.app/Contents/MacOS/wxdo Undefined symbols:
> 
> .../wxdo.app/Contents/Resources/Perl-Libraries/auto/Wx/Html/Html.bundle
> undefined reference to __Z27wxPli_add_constant_functionPPFdPKciE 
> expected to be defined in a dynamic image

# from Mark Dootson
# on Tuesday 05 December 2006 02:06 pm:

>On reflection, there's so much wrong with my suggestion below that its
>difficult to know where to start.

Well, you did at least get me thinking about the right bits of code.  I 
did some more digging and ended up deep inside of XSLoader and 
DynaLoader.  It appears that

  _boot_Constant( 'Wx', $XS_VERSION );

...doesn't actually do anything.  But, I still can't quite figure out 
what's going on.

I also tried building wxPerl as ppc-only using the 10.3 SDK in -isysroot 
flag (per [1]) (note: I had to use `ditto` to extract 
a /usr/bin/perl-ppc from apple's universal perl.)  But, this gives me 
the same "expected to be defined" errors when loading any of the Wx 
extensions on 10.3.

My best guess is that it is because the .dylib symbol tables are 
slightly different from one OS version to the other.  If that's the 
case, it may be that apple's perl is not 10.3 compatible (and therefore 
my libperl and Dynaloader.bundle are the source of the problem?)  But, 
how to ask a binary what SDK it was built against?

I guess I should also ask the question:  does Wx work when compiled on a 
10.3 mac?  Given apple's policy of discontinuing all old software 
(including a 10.3-compatible xcode) on day zero of a new version, I'm 
going to have a tough time discovering that for myself without shelling 
out some bucks for a trip to their lab in california.

So, what to do?  Is it worth compiling perl-and-everything-else from 
source as ppc with the 10.3 SDK?  It's sounding like I'll have to do 
that to get something that's compatible with old macs (and then 
(assuming the ppc cross-compiled build works!) stitch everything 
together with an i386 build to get a universal binary.)

Alternatively, I just give up and don't do a binary build for 10.3.  How 
many users does that exclude?

--Eric

[1]
http://developer.apple.com/documentation/DeveloperTools/Conceptual/cross_development/Using/chapter_3_section_2.html
-- 
So malloc calls a timeout and starts rummaging around the free chain,
sorting things out, and merging adjacent small free blocks into larger
blocks. This takes 3 1/2 days.
--Joel Spolsky
---------------------------------------------------
    http://scratchcomputing.com
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Re: [wxperl-users] mac panther: undefined symbols in appbundle

[Mark D. <mar...@zn...>]

Hi,

 > I guess I should also ask the question:  does Wx work when compiled on a
> 10.3 mac?  

Yes. Last version I built was Wx 0.54 with wxWidgets 2.6.3 - it worked
as expected.

> Alternatively, I just give up and don't do a binary build for 10.3.  How 
> many users does that exclude?

Assuming Safari .31 is what comes with 10.3, the site
http://marketshare.hitslink.com/report.aspx?qprid=6&qpmr=55&qpdt=1&qpct=3&qptimeframe=M&qpsp=94

would suggest that in November around 21% of the Mac users they tracked
were on 10.3 (at least those using Safari)

Their figures for June 2006 showed 30% were 10.3 users.

Interestingly, I thought perhaps using Activestate's latest PDK might
offer a painfree solution as it now supports MacOSX - or at least
confirmation that it can work. But I see from their website that it only
works on 10.4 +

So sorry, no solutions - but hopefully the info helps you make up your mind.

Regards

Mark