I would like to test the OSC sending opcode, but I have the same
problem as Victor, but I am on 32bit Linux

WARNING: 'libosc-sock.so' is not a Csound plugin library
WARNING: could not open library 'libOSC.so'
WARNING: could not open library 'libosc.so'

All three exist so something has changed significantly in the plugins.
-rwxrwxr-x    1 jpff     jpff        70143 May  1 16:33 libosc.so*
-rwxrwxr-x    1 jpff     jpff        69891 Apr 22 14:48 libOSC.so*
-rwxrwxr-x    1 jpff     jpff        90171 May  1 16:33 libosc-sock.so*
and yes OPCODEDIR is set to the current directory (this still needs to
be improved).  What has changed?

==John ffitch


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jpff@codemist.co.uk wrote:

> I would like to test the OSC sending opcode, but I have the same
> problem as Victor, but I am on 32bit Linux
> 
> WARNING: 'libosc-sock.so' is not a Csound plugin library
> WARNING: could not open library 'libOSC.so'
> WARNING: could not open library 'libosc.so'

The message about libosc-sock is actually correct, because all sources for this
file are commented out (due to errors), and it does not contain the interface
functions. However, I cannot reproduce the other two warnings:

./csound examples/trapped.csd

   Electric Fence 2.2.0 Copyright (C) 1987-1999 Bruce Perens 
Localisation of messages is disabled, using default language.
time resolution is 0.757 ns
WARNING: 'libosc-sock.so' is not a Csound plugin library
PortAudio real-time audio module for Csound
JACK real-time audio module for Csound by Istvan Varga
ALSA real-time audio module for Csound by Istvan Varga
PortMIDI real time MIDI plugin for Csound
0dBFS level = 32768.0
Csound version 5.00 beta (float samples) May  1 2005
libsndfile-1.0.10
UnifiedCSD:  examples/trapped.csd
STARTING FILE
Creating options
...


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More information....

(gdb) n
76          void *library = 0;
(gdb) n
77          if (
(gdb) n
86            library = dlopen(libraryPath, RTLD_NOW | RTLD_GLOBAL );
(gdb) print libraryPath
$29 = 0x812ca20 "/home/jpff/Sourceforge/csound5/libosc.so"
(gdb) n
92          }
(gdb) print library
$30 = (void *) 0x0
(gdb) !ls -l /home/jpff/Sourceforge/csound5/libosc.so
Undefined command: "".  Try "help".
(gdb) 
Suspended
xenakis:~/Sourceforge/csound5> ls -l /home/jpff/Sourceforge/csound5/libosc.so
-rwxrwxr-x    1 jpff     jpff        70143 May  1 17:21 /home/jpff/Sourceforge/csound5/libosc.so*

So dlopen fail to open it despite its existence.  I think errno is 2
but that is not clear.

This code is all new to me so I do not understand what it is doing.
Are there magic options one needs to compile plugins?  Other than
clear from SConstruct?

==John ffitch


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and more information....

The SConstruct  says

    print "CONFIGURATION DECISION: Building OSC plugin."
    oscEnvironment = pluginEnvironment.Copy()
    oscEnvironment.Append(LIBS = ['lo'])
    pluginLibraries.append(oscEnvironment.SharedLibrary('osc',
                                                        ['Opcodes/OSC.c']))

By restoring the error message in dl_opcides.c so when there is a
failure one can tell what I see
Error 'liblo.so.0: cannot open shared object file: No such file or directory' in dlopen(/home/jpff/Sourceforge/csound5/libosc.so).

The library does exist in /usr/local/lib but clearly there is a
problem with libraries in plugins.  This seems the same structure as
used in other plugins (pmidi, rtalsa, fluidOpcodes)

==John ffitch


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jpff@codemist.co.uk wrote:

> The library does exist in /usr/local/lib but clearly there is a
> problem with libraries in plugins.  This seems the same structure as
> used in other plugins (pmidi, rtalsa, fluidOpcodes)

Is it possible that some other library on which liblo.so depends is not
found ? Also, do the other (non-OSC) plugins load correctly ? On OS X
the problem was different as all libraries failed.


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I was suspecting something wrong with the installation of liblo
First the links were not absolute, but now I have
xenakis:~/Sourceforge/csound5> ls -l /usr/local/lib/liblo*
-rwxr-xr-x    1 root     root          779 Jan 25 07:52 /usr/local/lib/liblo.la*
lrwxrwxrwx    1 root     root           29 May  1 18:54 /usr/local/lib/liblo.so -> /usr/local/lib/liblo.so.0.4.0*
lrwxrwxrwx    1 root     root           29 May  1 18:55 /usr/local/lib/liblo.so.0 -> /usr/local/lib/liblo.so.0.4.0*
-rwxr-xr-x    1 root     root       125914 Nov 17 07:36 /usr/local/lib/liblo.so.0.2.0*
-rwxr-xr-x    1 root     root       154285 Jan 25 07:52 /usr/local/lib/liblo.so.0.4.0*

The error message is still 
Error 'liblo.so.0: cannot open shared object file: No such file or directory' in dlopen(/home/jpff/Sourceforge/csound5/libosc.so).

This whole area is confused in my mind; never likes dynamic libraries.

OK so it may not be the same as Victor's problems.

==John ffitch


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jpff@codemist.co.uk wrote:

> I was suspecting something wrong with the installation of liblo
> First the links were not absolute, but now I have
> xenakis:~/Sourceforge/csound5> ls -l /usr/local/lib/liblo*
> -rwxr-xr-x    1 root     root          779 Jan 25 07:52 /usr/local/lib/liblo.la*
> lrwxrwxrwx    1 root     root           29 May  1 18:54 /usr/local/lib/liblo.so -> /usr/local/lib/liblo.so.0.4.0*
> lrwxrwxrwx    1 root     root           29 May  1 18:55 /usr/local/lib/liblo.so.0 -> /usr/local/lib/liblo.so.0.4.0*
> -rwxr-xr-x    1 root     root       125914 Nov 17 07:36 /usr/local/lib/liblo.so.0.2.0*
> -rwxr-xr-x    1 root     root       154285 Jan 25 07:52 /usr/local/lib/liblo.so.0.4.0*

Where do those * characters at the end of link targets come from ?
I have links set up as follows:

-rw-r--r--  1 root root 32364 2004-10-02 03:36 /usr/lib/liblo.a
-rwxr-xr-x  1 root root   781 2004-10-02 03:36 /usr/lib/liblo.la
lrwxr-xr-x  1 root root    14 2005-02-28 14:02 /usr/lib/liblo.so -> liblo.so.0.1.1
lrwxr-xr-x  1 root root    14 2005-02-28 14:01 /usr/lib/liblo.so.0 -> liblo.so.0.1.1
-rwxr-xr-x  1 root root 31797 2004-10-02 03:36 /usr/lib/liblo.so.0.1.1


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* means executable, not part of the name
==J



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