[scilab-Users] XCos Blocks

[Andreas Stewering-Bone]

Hello 

The Compilation of the C-Files is no problem,

but if I want to load the generated lib, scilab cannot solve Xcos depended 
symbols like
get_block_number

The Headerfile scilab-5.2.2/include/scilab/scicos_block4.h defines this 
function.

Error Message:

 Loading macros 
in /home/ab/etherlab-scicos/ethercos_io_scicoslab-clone/macros/utils/
link(ethercos_io_runtime_path+'libethercos_io_runtime'+getdynlibext(),
['etl_scicos'],'c');
                                                                                          !--error 
236 
link: das gemeinsame Archiv wurde nicht 
geladen: /home/ab/etherlab-scicos/ethercos_io_scicoslab-clone/src/runtime/libethercos_io_runtime.so: 
undefined symbol: get_block_number
at line       9 of exec file called by :    
  exec('loader.sce');
at line      25 of exec file called by :    
exec loader.sce


I have tried to load the Xcos libs via 
loadScicosLibs
before, with no success.

ldd libethercos_io_runtime.so gives me following output

ab at shuttle4:~/etherlab-scicos/ethercos_io_scicoslab-clone/src/runtime$ ldd 
libethercos_io_runtime.so
	linux-gate.so.1 =>  (0xb7f2b000)
	librt.so.1 => /lib/i686/cmov/librt.so.1 (0xb7ef2000)
	libethercat.so.1 => /opt/etherlab/lib/libethercat.so.1 (0xb7eeb000)
	libethercos_io.so.0 => /tmp/SD_17628_/.libs/libethercos_io.so.0 (0xb7ee9000)
	libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb7dfb000)
	libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb7dd5000)
	libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb7c7a000)
	libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb7c6d000)
	libpthread.so.0 => /lib/i686/cmov/libpthread.so.0 (0xb7c53000)
	/lib/ld-linux.so.2 (0xb7f2c000)


following Symbols are requested

 objdump -T libethercos_io_runtime.so

libethercos_io_runtime.so:     file format elf32-i386

DYNAMIC SYMBOL TABLE:
00000000      D  *UND*	00000000              get_block_number
........



Greatings

Andreas


Am Tuesday 27 April 2010 11:32:22 schrieb Clément DAVID:
> Hello,
>
> First the Xcos API has been described in the wiki :
> [http://wiki.scilab.org/Xcos/PrivateAPI] and
> [http://wiki.scilab.org/Xcos/PublicAPI].
>
> On the 5.2.x branch, you can reuse your current scicos implementation as
> the core is the same. As in Scicoslab, you just need to load your block
> interface function into the interpreter (myblock.c), provide macros
> block descriptor (MYBLOCK_f.sci) and a reference instance in a palette
> (MYPALETTE.cosf).
>
> Then just open your palette on xcos as a normal diagram or use
> palettes/Open as palette button.
>
> For the 5.3.x branch (current master), we will probably provide an API
> to add/remove/customize h5 blocks from Scilab. Thus user will be able to
> implement Xcos palettes as Scilab toolboxes.
>
> Regards,
>
> Clément
>
> > Hello,
> >
> > Is there any documentation about XCos Block building and compiling?
> > I have working blocks under Scilab 4.x and Scicoslab, but I do not know
> > under Xcos:
> > - how to compile and link the c-source against the xcos-libs?
> > - how to build up the hdf5 files?
> >
> >
> > Greatings
> >
> >
> > Andreas