creating a dll using a static library

creating a dll using a static library

[Luc MOULINIER]

Hello !

I try to create a dynamic library, say toto.dll, using a static library, say libRmath.a. When loading the toto.dll library, an error occurs asking me for the libRmath.a library.
The compilation is done as :
gcc -shared toto.dll f1.o f2.o f3.o -L/c/tcl/lib -ltclstub86 -L. libRmath.a
on Windows, MinGW and gcc 4.5.2

Can soneone tell me what is wrong in my compilation ?

Many thanks in advance !
Luc



----------------------------------------------------------------
Dr. Luc Moulinier,
Laboratoire de Biologie et Génomique Intégratives
IGBMC
1, rue Laurent Fries
67 404 ILLKIRCH Cedex
Phone : +33 (0)3 88 65 32 79
----------------------------------------------------------------

Re: creating a dll using a static library

[Ian Lance Taylor]

Luc MOULINIER <moumou@igbmc.fr> writes:

> I try to create a dynamic library, say toto.dll, using a static library, say libRmath.a. When loading the toto.dll library, an error occurs asking me for the libRmath.a library.
> The compilation is done as :
> gcc -shared toto.dll f1.o f2.o f3.o -L/c/tcl/lib -ltclstub86 -L. libRmath.a
> on Windows, MinGW and gcc 4.5.2
>
> Can soneone tell me what is wrong in my compilation ?

I don't know what is wrong, but I can tell you that you are much more
likely to get help if you tell us the exact error message.

Ian

RE : creating a dll using a static library

[Luc MOULINIER]

To be a bit more precise.
I'm building an extension for the Tcl language. Extensions are in fact dynmaic libraries.which are loaded in the Tcl language when required. So when loading my .dll lib created as I mentioned, I got the message :
couldn't load library "o:/ordali/lib/tclcluspack
0.1/tclcluspack0.1.dll": this library or a depen
dent library could not be found in library path
    while executing
"load o:/ordali/lib/tclcluspack0.1/tclcluspack0.
1.dll tclcluspack"

The dll is present, and at the right place. Thus, loading it directly in the interpreter results in the same error.
A point to mention is that the size of the dll seeems to be correct, as the sum of the libRmath.a + objects.

Maybe this helps ...

----------------------------------------------------------------
Dr. Luc Moulinier,
Laboratoire de Biologie et Génomique Intégratives
IGBMC
1, rue Laurent Fries
67 404 ILLKIRCH Cedex
Phone : +33 (0)3 88 65 32 79
----------------------------------------------------------------
________________________________________
De : Ian Lance Taylor [iant@google.com]
Date d'envoi : vendredi 18 mars 2011 15:23
À : Luc MOULINIER
Cc : gcc-help@gcc.gnu.org
Objet : Re: creating a dll using a static library

Luc MOULINIER <moumou@igbmc.fr> writes:

> I try to create a dynamic library, say toto.dll, using a static library, say libRmath.a. When loading the toto.dll library, an error occurs asking me for the libRmath.a library.
> The compilation is done as :
> gcc -shared toto.dll f1.o f2.o f3.o -L/c/tcl/lib -ltclstub86 -L. libRmath.a
> on Windows, MinGW and gcc 4.5.2
>
> Can soneone tell me what is wrong in my compilation ?

I don't know what is wrong, but I can tell you that you are much more
likely to get help if you tell us the exact error message.

Ian

Re: RE : creating a dll using a static library

[Ian Lance Taylor]

Luc MOULINIER <moumou@igbmc.fr> writes:

> To be a bit more precise.
> I'm building an extension for the Tcl language. Extensions are in fact dynmaic libraries.which are loaded in the Tcl language when required. So when loading my .dll lib created as I mentioned, I got the message :
> couldn't load library "o:/ordali/lib/tclcluspack
> 0.1/tclcluspack0.1.dll": this library or a depen
> dent library could not be found in library path
>     while executing
> "load o:/ordali/lib/tclcluspack0.1/tclcluspack0.
> 1.dll tclcluspack"
>
> The dll is present, and at the right place. Thus, loading it directly in the interpreter results in the same error.
> A point to mention is that the size of the dll seeems to be correct, as the sum of the libRmath.a + objects.

I don't know what the problem is here, but it does not sound like a
problem with gcc.

You may get more help if you ask on the mingw mailing list.

Ian

Re: creating a dll using a static library

[Juan Ramírez]

why don't you try -lRmath ?


Saludos!
     Juan


On Fri, Mar 18, 2011 at 9:25 AM, Luc MOULINIER <moumou@igbmc.fr> wrote:
> Hello !
>
> I try to create a dynamic library, say toto.dll, using a static library, say libRmath.a. When loading the toto.dll library, an error occurs asking me for the libRmath.a library.
> The compilation is done as :
> gcc -shared toto.dll f1.o f2.o f3.o -L/c/tcl/lib -ltclstub86 -L. libRmath.a
> on Windows, MinGW and gcc 4.5.2
>
> Can soneone tell me what is wrong in my compilation ?
>
> Many thanks in advance !
> Luc
>
>
>
> ----------------------------------------------------------------
> Dr. Luc Moulinier,
> Laboratoire de Biologie et Génomique Intégratives
> IGBMC
> 1, rue Laurent Fries
> 67 404 ILLKIRCH Cedex
> Phone : +33 (0)3 88 65 32 79
> ----------------------------------------------------------------
>