[squeak-dev] Re: Z3950 on OSX: module yaz3 not found

Tue Dec 21 07:58:13 UTC 2010

The module is found ! How:
- Using VM Squeak 5.8b12 2  (instead of Cog or the VM provided in Seaside
One-Click image)
- go in Squeak\ 5.8b12\ 2.app/Contents/Resources/, then ln -s
/usr/local/lib/libyaz.3.dylib .

Now I have the "Unable to find function address" you have talked earlier :)
I will look at the mangled function names.

Laurent  --- on the road to the FFI mountain.

On Tue, Dec 21, 2010 at 6:59 AM, Hernán Morales Durand <
hernan.morales at gmail.com> wrote:

> Laurent,
> I forward this e-mail to the squeak mailing list, may be someone there
> have a better idea how the OSX VM works. BTW there are more
> commentaries here
>
> http://forum.world.st/squeak-dev-Alien-amp-Squeak-FFI-issues-on-Snow-Leopard-td85608.html
> Cheers,
>
> Hernán
>
> 2010/12/20 laurent laffont <laurent.laffont at gmail.com>:
> > Hi Hernan,
> > the strace equivalent on OSX seems to be dtruss (yes I'm learning OSX too
> :)
> > sudo dtruss -p [pid of process]
> > in the trace I have this:
> >
> stat("/Users/laurentlaffont/Downloads/Seaside.app/Contents/Resources/yaz3.bundle/Contents/MacOS/yaz3\0",
> > 0xBFF59440, 0xBFF5AB28) = -1 Err#2
> >
> stat64("/Users/laurentlaffont/Downloads/Seaside.app/Contents/Resources/yaz3.bundle/Contents/MacOS/yaz3\0",
> > 0xBFF5892C, 0xBFF5AB28) = -1 Err#2
> >
> stat("/Users/laurentlaffont/Downloads/Seaside.app/Contents/Resources/yaz3\0",
> > 0xBFF59440, 0xBFF5AB28) = 0 0
> >
> stat64("/Users/laurentlaffont/Downloads/Seaside.app/Contents/Resources/yaz3\0",
> > 0xBFF5892C, 0xBFF5AB28) = 0 0
> >
> open("/Users/laurentlaffont/Downloads/Seaside.app/Contents/Resources/yaz3\0",
> > 0x0, 0x0) = 12 0
> > pread(0xC, "\317\372\355\376\a\0", 0x1000, 0x0) = 4096 0
> > close(0xC) = 0 0
> >
> stat("/Users/laurentlaffont/Downloads/Plugins/yaz3.bundle/Contents/MacOS/yaz3\0",
> > 0xBFF59440, 0x1000) = -1 Err#2
> >
> stat64("/Users/laurentlaffont/Downloads/Plugins/yaz3.bundle/Contents/MacOS/yaz3\0",
> > 0xBFF5892C, 0x1000) = -1 Err#2
> > stat("/Users/laurentlaffont/Downloads/Plugins/yaz3\0", 0xBFF59440,
> 0x1000) =
> > -1 Err#2
> > stat64("/Users/laurentlaffont/Downloads/Plugins/yaz3\0", 0xBFF5892C,
> 0x1000)
> > = -1 Err#2
> >
> > so it looks like the VM is trying to find yaz3 at non standard Unix
> places
> > (I don't know if it's SqueakVM or OSX related).
> > I've created Contents/Resources/yaz3.bundle/Contents/MacOS/, put yaz lib
> > there, ln -s libyaz.3.dylib yaz3 but no success.
> >
> > I've read good post
> http://forum.world.st/FFI-Documentation-td2225150.html :
> >
> > Module Location - where the external library file lives
> >       - depends on the platform
> >               - Mac
> >                       - pre Snow Leopard
> >                               - checks VM path and common library paths
> >                       - Snow Leopard
> >                               - only looks in VM bundle's Resources file,
> you must either [5]:
> >                                       - store all external libraries
> there
> >                                       - ln -s path/to/library
> path/to/VM/Resources/library_name
> >                                       - Change the VM's Info.plist
> "SqueakPluginsBuiltInOrLocalOnly" key from
> > "true" to "false."
> >
> > For this SqueakPluginsBuiltInOrLocalOnly I suppose I need to compile a VM
> ?
> > Cheers,
> > Laurent Laffont
> >
> >
> > On Mon, Dec 20, 2010 at 4:12 PM, Hernán Morales Durand
> > <hernan.morales at gmail.com> wrote:
> >>
> >> Hi Laurent
> >>
> >> I've read there is a couple of system calll monitors in MacOS, ktrace
> >> and dtrace (http://en.wikipedia.org/wiki/Ktrace ,
> >> http://en.wikipedia.org/wiki/DTrace) so you may attach to the VM and
> >> see what's missing?
> >> Cheers,
> >>
> >> Hernán
> >>
> >> 2010/12/20 laurent laffont <laurent.laffont at gmail.com>:
> >> > Thanks Hernan.
> >> > It still doesn't work. I've also tried to play with LD_LOAD_PATH /
> >> > LD_LIBRARY_PATH no success.... I want to make it work so I need to
> learn
> >> > :)
> >> >
> >> > For the mangled function names, on Linux and OSX there's nm.
> >> > Here's what I get:
> >> > $ nm -g libyaz.3.dylib | grep ZOOM_connection_create
> >> > 0000000000046a30 T _ZOOM_connection_create
> >> > Cheers,
> >> > Laurent
> >> >
> >> > On Sun, Dec 19, 2010 at 6:23 PM, Hernán Morales Durand
> >> > <hernan.morales at gmail.com> wrote:
> >> >>
> >> >> Hi Laurent,
> >> >>
> >> >> Thanks for reporting. The correct #moduleName for MacOS was missing,
> >> >> I've uploaded a new version answering 'libyaz.3.dylib' which I guess
> >> >> is the corresponding for 'yaz3.dll' (according to
> >> >> http://en.wikipedia.org/wiki/Dynamic_library#Naming ).
> >> >>
> >> >> I haven't access to a MacOS, but in Windows I've had to find the
> >> >> mangled function names (i.e. _ZOOM_connection_create at 4) so FFI can
> >> >> find the function addresses and you don't get the classic "Error:
> >> >> Unable to find function address". I don't know if it's related since
> >> >> talks about C++, but you may want to check
> >> >> http://wiki.squeak.org/squeak/3735
> >> >>
> >> >> The tool I've used to find the mangled function names in Windows is
> >> >> the Steve Miller's Dependency Walker
> http://www.dependencywalker.com/
> >> >>
> >> >> 2010/12/19 laurent laffont <laurent.laffont at gmail.com>:
> >> >> > Hi,
> >> >> >
> >> >> > I want to use http://www.squeaksource.com/Z3950
> >> >> > Following install instructions, I've dowloaded yaz sources (I've
> >> >> > tried
> >> >> > 4.1.2
> >> >> > and 3.0.52) as it seems there's no binary for OSX, ./configure
> >> >> > && make
> >> >> > &&
> >> >> > make install.
> >> >> > Then using latest Seaside One Click image I've copied
> >> >> > /usr/local/lib/*yaz*
> >> >> >  in Seaside.app/Contents/MacOS
> >> >> > $ ls ~/Downloads/Seaside.app/Contents/MacOS/
> >> >> > Squeak VM Opt         libyaz.a              libyaz.la
> >> >> > libyaz_icu.a          libyaz_icu.la         libyaz_server.a
> >> >> > libyaz_server.la libyaz.3.dylib        libyaz.dylib
> >> >> >  libyaz_icu.3.dylib    libyaz_icu.dylib      libyaz_server.3.dylib
> >> >> > libyaz_server.dylib
> >> >> >
> >> >> >
> >> >> > But then I have a External Module Not Found on
> >> >> > YAZPQFFFILibrary>>createParser
> >> >> > " YAZPQDFFILibrary default createParser "
> >> >> > <cdecl: YAZPQFParser 'yaz_pqf_create' (void) module: 'yaz3'>
> >> >> > ^ self externalCallFailed
> >> >> >
> >> >> > Any hint ?
> >> >> > Cheers,
> >> >> > Laurent Laffont -- FFI newbie
> >> >> >
> >> >> > Pharo Smalltalk Screencasts: http://www.pharocasts.com/
> >> >> > Blog: http://magaloma.blogspot.com/
> >> >> >
> >> >>
> >> >> --
> >> >> Hernán Morales
> >> >> Information Technology Manager,
> >> >> Institute of Veterinary Genetics.
> >> >> National Scientific and Technical Research Council (CONICET).
> >> >> La Plata (1900), Buenos Aires, Argentina.
> >> >> Telephone: +54 (0221) 421-1799.
> >> >> Internal: 422
> >> >> Fax: 425-7980 or 421-1799.
> >> >
> >> >
> >
> >
>
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