Re: [Chicken-users] libsvm egg install problem

[Tom Poliquin]

Dashi,

I messed up.

I dumbly used the 'svm-predict' example without
creating a model file!
So it looks like that is what caused the segfault.

I used your other example (svm-train), which
was well behaved but gave me the error shown
below.

I'll try to get some time in the next day or two
to create a real dataset and play with it a bit.

Looks like it's installed Ok ..

Thanks for the help and I'll update you
with my results.

Tom

--------
Error using svm-train example:
--------
CHICKEN
(c)2008 The Chicken Team
(c)2000-2007 Felix L. Winkelmann
Version 3.1.0 - linux-unix-gnu-x86      [ manyargs dload ptables applyhook ]
SVN rev. 10106  compiled 2008-05-20 on giliath (Linux)

; loading svm.scm ...
; loading /home/cowboyneal/lib/chicken/3/libsvm.so ...
; loading /home/cowboyneal/lib/chicken/3/libsvm_core.so ...
Error: libsvm: invalid data length

        Call history:

        <syntax>                (define model (svm-train (new-svm-problem 
labels
 data) (new-svm-parameter)))
        <syntax>                (##core#set! model (svm-train (new-svm-problem 
l
abels data) (new-svm-parameter)))
        <syntax>                (svm-train (new-svm-problem labels data) 
(new-sv
m-parameter))
        <syntax>                (new-svm-problem labels data)
        <syntax>                (new-svm-parameter)
        <eval>          (svm-train (new-svm-problem labels data) 
(new-svm-parame
ter))
        <eval>          (new-svm-problem labels data)
        libsvm.scm: 122  error                  <--
--------

> Dashi,
>
> Thanks for the reply .. and sorry for my delay
> (startup deadline) ..
>
> > Tom Poliquin wrote:
> > > I'm trying to install the libsvm egg and not
> > > having much success.
> >
> > I've updated the egg (v1.1), which hopefully works fine.
> > Please give it a try.
>
> I tried it out and still having difficulties (albeit different ones :-) )
>
> Here's the output of chicken-setup ..
>
> ------------------
> address@hidden chicken]$ chicken-setup libsvm
>
> The extension libsvm does not exist.
> Do you want to download it ? (yes/no/abort) [yes] yes
> downloading libsvm.egg from (www.call-with-current-continuation.org eggs/3
> 80) gzip -d -c /tmp/chicken-setup-3-cowboyneal/downloads/libsvm.egg | tar
> xf - /home/cowboyneal/bin/csc -feature compiling-extension -s -O2
> libsvm_core.scm l
> ibsvm_core_wrap.c -lsvm -I/usr/include/libsvm-2.0/libsvm
>   /home/cowboyneal/bin/csc -feature compiling-extension -s -O2 libsvm.scm
> Warning: extension `libsvm_core' is currently not installed
>   rm -fr /home/cowboyneal/lib/chicken/3/libsvm.so
>   cp -r libsvm.so /home/cowboyneal/lib/chicken/3/libsvm.so
>   chmod a+r /home/cowboyneal/lib/chicken/3/libsvm.so
>   rm -fr /home/cowboyneal/lib/chicken/3/libsvm_core.so
>   cp -r libsvm_core.so /home/cowboyneal/lib/chicken/3/libsvm_core.so
>   chmod a+r /home/cowboyneal/lib/chicken/3/libsvm_core.so
> ------------------
>
> I ran it and got an undefined symbol .. __cxa_pure_virtual
>
> ------------------
> address@hidden ~]$ csi svm.scm
>
> CHICKEN
> (c)2008 The Chicken Team
> (c)2000-2007 Felix L. Winkelmann
> Version 3.1.0 - linux-unix-gnu-x86      [ manyargs dload ptables applyhook
> ] SVN rev. 10106  compiled 2008-05-20 on giliath (Linux)
>
> ; loading svm.scm ...
> ; loading /home/cowboyneal/lib/chicken/3/libsvm.so ...
> ; loading /home/cowboyneal/lib/chicken/3/libsvm_core.so ...
> Error: (load) unable to load compiled module
> "/home/cowboyneal/lib/chicken/3/libsvm_core.so"
> "/home/cowboyneal/lib/libsvm.so.1: undefined symbol: __cxa_pure_virtual"
> ------------------
>
> I dug around the Internet a bit and found it might be related
> to libsupc++ so I edited the libsvm egg build to add it, see below.
> (again I'm not an expert at this stuff).
>
> I reran the setup (by untarring the egg and running chicken-setup)
> and got ..
>
> ------------------
> address@hidden libsvm]$ chicken-setup
>   /home/cowboyneal/bin/csc -feature compiling-extension -s -O2
> libsvm_core.scm libsvm_core_wrap.c -lsvm -lsupc++
> -I/usr/include/libsvm-2.0/libsvm /home/cowboyneal/bin/csc -feature
> compiling-extension -s -O2 libsvm.scm rm -fr
> /home/cowboyneal/lib/chicken/3/libsvm.so
>   cp -r libsvm.so /home/cowboyneal/lib/chicken/3/libsvm.so
>   chmod a+r /home/cowboyneal/lib/chicken/3/libsvm.so
>   rm -fr /home/cowboyneal/lib/chicken/3/libsvm_core.so
>   cp -r libsvm_core.so /home/cowboyneal/lib/chicken/3/libsvm_core.so
>   chmod a+r /home/cowboyneal/lib/chicken/3/libsvm_core.so
>   chmod a+r /home/cowboyneal/lib/chicken/3/libsvm.setup-info
> ------------------
>
> All seemed well until I ran the test code ..
> which ended with a SegFault.
>
> ------------------
> address@hidden ~]$ csi svm.scm
> CHICKEN
> (c)2008 The Chicken Team
> (c)2000-2007 Felix L. Winkelmann
> Version 3.1.0 - linux-unix-gnu-x86      [ manyargs dload ptables applyhook
> ] SVN rev. 10106  compiled 2008-05-20 on giliath (Linux)
> ; loading svm.scm ...
> ; loading /home/cowboyneal/lib/chicken/3/libsvm.so ...
> ; loading /home/cowboyneal/lib/chicken/3/libsvm_core.so ...
> Segmentation fault
> ------------------
>
> Looks like it's dying when loading the actual libsvm.so.1 ..
> Did I mess up in building it?
>
> > > g++ -fPIC -Wall -O3 -c svm.cpp
> > > ld -shared -soname libsvm.so.1 -o libsvm.so.1.0 -lc svm.o
> > > I then moved the .so into my ~/lib directory with appropriate
> > > symbolic links ..
> > > libsvm.so.1.0
> > > libsvm.so.1 -> libsvm.so.1.0
> > > libsvm.so -> libsvm.so.1.0
> > > and ran ldconfig
>
> Any thoughts appreciated ..
>
> Tom
>
> On Wednesday 28 May 2008 04:39, Daishi Kato wrote:
> > Hi,
> >
> > I've updated the egg (v1.1), which hopefully works fine.
> > Please give it a try.
> >
> > I've been testing against debian libsvm package.
> > --daishi
> >
> > At Tue, 27 May 2008 12:50:13 -0700,
> >
> > Tom Poliquin wrote:
> > > I'm trying to install the libsvm egg and not
> > > having much success.
> > >
> > > The libsvm egg requires the libsvm library.
> > >
> > > I downloaded the only libsvm library I could find from
> > > http://www.csie.ntu.edu.tw/~cjlin/libsvm/
> > > (libsvm-2.86) which after installation only generates an svm.o.
> > > I tried some older versions hoping to find one generating an 'so'
> > > file but was unsuccessful.
> > >
> > > Undaunted, (and not an shared library expert) I did this ..
> > > g++ -fPIC -Wall -O3 -c svm.cpp
> > > ld -shared -soname libsvm.so.1 -o libsvm.so.1.0 -lc svm.o
> > >
> > > I then moved the .so into my ~/lib directory with appropriate
> > > symbolic links ..
> > > libsvm.so.1.0
> > > libsvm.so.1 -> libsvm.so.1.0
> > > libsvm.so -> libsvm.so.1.0
> > > and ran ldconfig
> > >
> > > I then ran the egg install (I'm using
> > > Chicken 3.1.0) and got ..
> > >
> > >   The extension libsvm does not exist.
> > >   Do you want to download it ? (yes/no/abort) [yes] yes
> > >   downloading libsvm.egg from (www.call-with-current-continuation.org
> > > eggs/ 3 80) .
> > >   gzip -d -c /tmp/chicken-setup-3-cowboyneal/downloads/libsvm.egg | tar
> > > xf - /home/cowboyneal/bin/csc -feature compiling-extension -s -O2
> > > libsvm.scm Warning: extension `libsvm_core' is currently not installed
> > >   /home/cowboyneal/bin/csc
> > >        -feature compiling-extension -s -O2 libsvm_core.scm l
> > >   ibsvm_core_wrap.c -lsvm -I/usr/include/libsvm-2.0/libsvm
> > >   Error: unbound variable: documentation
> > >
> > > Looks like I also need a libsvm_core.so .. I'm guessing I haven't
> > > downloaded the right libsvm .. ?
> > >
> > > Any thoughts greatly appreciated,
> > >
> > > Tom
> > >
> > >
> > >
> > > _______________________________________________
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