[Scilab-Dev] How use a custom library in a toolbox ?

[Vincent Lejeune]

I used scilab-5.1.1.

I've solved the issue : in fact, I was trying to export function from C++ 
code, and to import it into a C gateway. The problem was, I forgot to write 
"extern "C"  " around my function declaration, inside the custom library and 
the gateway. Now the compile process work fine.
Sorry for the inconvenience.

--------------------------------------------------
From: "Collette Yann" <ycollet at freesurf.fr>
Sent: Monday, May 04, 2009 9:36 PM
To: <dev at lists.scilab.org>
Subject: Re: [Scilab-Dev] How use a custom library in a toolbox ?

> Just a stupid suggestion: do you have tested with scilab-5.1.1 and not 
> scilab master ?
> I had a problem with a toolbox. In this toolbox, I have a gateway and a 
> source directory -> 2 libraries (2 dlls in fact)
> with 5.1.1, everything compiles fine, but with scilab master, it wasn't 
> able to find one of the dll.
>
> YC
>
> Vincent Lejeune a écrit :
>> I've switched to a dll library as adviced, but it didnt solve my problem. 
>> The error is the same, MSVC cannot find the external link to my 
>> function...
>> Here is attached the .lib and the .dll.
>>
>> --------------------------------------------------
>> From: "Allan CORNET" <allan.cornet at scilab.org>
>> Sent: Monday, May 04, 2009 11:37 AM
>> To: <dev at lists.scilab.org>
>> Subject: RE: [Scilab-Dev] How use a custom library in a toolbox ?
>>
>>> Hi,
>>>
>>> First, I advice to use dynamic library for your project it will be 
>>> easier to
>>> debug and to support.
>>>
>>> From my experience with VS #pragma('lib',libname) works better when
>>> 'libname' is a dynamic library than a static library.
>>> For example , your 'libname' can have some others external dependencies 
>>> and
>>> you will need to force a link also on these libraries.
>>>
>>> A temp. workaround can be :
>>>
>>> tbx_build_gateway('skeleton_c', ['c_sum','sci_csum';'c_sub','sci_csub'],
>>> ['sci_csum.c','sci_csub.c'], ..
>>>                  get_absolute_file_path('builder_gateway_c.sce'), ..
>>>                  ['../../src/c/libcsum','libname']);
>>>
>>> Where 'libname' is the pathname of your library.
>>>
>>> I suspect that your path in #pragma is wrong or that your library does 
>>> not
>>> export "_GPU_lu" symbol.
>>>
>>> What is built options of your static library ?
>>> (http://msdn.microsoft.com/fr-fr/library/2kzt1wy3.aspx)
>>>
>>> Can you send me your .lib ?
>>>
>>>
>>> Allan
>>>
>>> -----Message d'origine-----
>>> De : Vincent Lejeune [mailto:vincent.lejeune at institutoptique.fr]
>>> Envoyé : lundi 4 mai 2009 11:08
>>> À : dev at lists.scilab.org
>>> Objet : Re: [Scilab-Dev] How use a custom library in a toolbox ?
>>>
>>> Hi
>>> here it is, and the log for the compilation.
>>> The linker doesnt find where to find my functions actually...
>>>
>>> My custom library is in a static .lib, I don't use .dll at the moment.
>>> (By the way, the link you gave me is broken).
>>>
>>> Thank for help, I am no compile process expert...
>>>
>>>
>>> --------------------------------------------------
>>> From: "Allan CORNET" <allan.cornet at scilab.org>
>>> Sent: Monday, May 04, 2009 8:17 AM
>>> To: <dev at lists.scilab.org>
>>> Subject: RE: [Scilab-Dev] How use a custom library in a toolbox ?
>>>
>>>> Hi,
>>>>
>>>> Please attach your makelib.mak
>>>>
>>>> You can do :
>>>>
>>>> exec builder.sce
>>>> after that your script return a error , put in Scilab :
>>>> unix start
>>>> it will open a dos shell
>>>> nmake /f makelib.mak
>>>>
>>>> What is the error message ?
>>>>
>>>> What is your .lib is a library import for a dll or a static library  ?
>>>>
>>>> You can use external fortran dynamic library.
>>>> We link blas ,lapack and others fortran libraries to Scilab.
>>>>
>>>>
>>>> http://wiki.scilab.org/How_to_debug_an_external_source_code_linked_to_
>>>> scilab
>>>> _with_Visual_Studio
>>>>
>>>> Allan CORNET
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> -----Message d'origine-----
>>>> De : Vincent Lejeune [mailto:vincent.lejeune at institutoptique.fr]
>>>> Envoyé : dimanche 3 mai 2009 22:42
>>>> À : dev at lists.scilab.org
>>>> Objet : [Scilab-Dev] How use a custom library in a toolbox ?
>>>>
>>>> Hello,
>>>>
>>>> I'd like to make a toolbox for Scilab with source that need to be
>>>> compiled with nvcc , which is not considered as a common compiler (it
>>>> makes asm code from cuda source).
>>>> I made a .lib file containing precompiled functions I liked to use
>>>> within the gateway part from the squeleton toolbox. That means, I add
>>>> a #pragma
>>>> comment(lib,"...") pointing to the .lib file, and the header
>>>> containing the prototype of my functions. However, the automated
>>>> script doesnt work, here is the output (in french sorry, only the end
>>>> does matter anyway) :
>>>>
>>>>> Initialisation:
>>>>>   Chargement de l'environnement de travail
>>>>>    Génère un fichier loader
>>>>>    Génère un Makefile
>>>>>    Exécute le Makefile
>>>>>    Compilation de csum.c
>>>>>    Compilation de csub.c
>>>>>    Construction de la bibliothèque partagée (soyez patient)
>>>>>    NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual
>>>>> Studio 9.0\VC\bin\link.EXE"'á: code retour '0x450'
>>>>>    Stop.
>>>>>  !--error 10000
>>>>> unix_s: error during "nmake /Y /nologo /f Makelib.mak libcsum.dll"
>>>>> execution
>>>>> at line      34 of function unix_s called by :
>>>>> line    50 of function ilib_compile called by :
>>>>> line    34 of function ilib_for_link called by :
>>>>> line    18 of function tbx_build_src called by :
>>>>> _absolute_file_path('builder_c.sce'))
>>>>> line     9 of exec file called by :
>>>>> ktop/TOOLBO~1/src/c/BUILDE~1.SCE'));
>>>>
>>>> I'm under windows. It's seems that the linking is failling. How can I
>>>> embed function inside a .lib in a gateway function ? I think it's
>>>> possible, as other part of Scilab's source code contains code writed
>>>> in fortran...But without the builder script.
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>
>