Re: [Vxl-users] VXL and Matlab

[Peter Vanroose <peter_vanroose@ya...>]

> Where I should put that option? In CMAKE_EXE_LINKER_FLAGS?

Sorry, I cannot help you with this; I'm not using CMake on a regular
basis.
Maybe you could contact the CMake mailing list.
In any case, the problem is that the required (weak) symbols are in the
.o files but not in the .a library.

--	Peter.

Re: [Vxl-users] VXL and Matlab

[Wheeler, Frederick W \(GE, Research\) <wheeler@cr...>]

Are you building static VXL libraries, and then trying to link what you =
need to make a single shared library for Matlab's loadlibrary call?  =
This following CMakeLists.txt files shows how we have done this.  I know =
this works for Windows.  I think it works for Linux.

IF( CMAKE_SYSTEM_NAME MATCHES SunOS )
  SET( TYPE "" )
ELSE( CMAKE_SYSTEM_NAME MATCHES SunOS )
  SET( TYPE "SHARED" )
ENDIF( CMAKE_SYSTEM_NAME MATCHES SunOS )

INCLUDE_DIRECTORIES( ${VXL_GEL_INCLUDE_DIR} )
INCLUDE_DIRECTORIES( ${VXL_RPL_INCLUDE_DIR} )

SET( foobar_source_files
     foobar_impl.txx    foobar_impl.h
     foobar.cxx    foobar.h
)

AUX_SOURCE_DIRECTORY( Templates foobar_source_files )
ADD_LIBRARY( foobar ${TYPE} ${foobar_source_files} )
TARGET_LINK_LIBRARIES( foobar vil vil_algo vnl img vul )


If you are building shared VXL libraries in unix, then you'd have to get =
Matlab's loadlibrary call to know to load all of the additional VXL =
libraries it would need. This is probably a matter of the =
LD_LIBRARY_PATH.

Fred Wheeler


> -----Original Message-----
> From: vxl-users-bounces@...
> [mailto:vxl-users-bounces@...]On Behalf Of Jose
> Alexandre de Franca
> Sent: Monday, June 05, 2006 7:04 AM
> To: p.vanroose@...; vxl-users@...
> Subject: Re: [Vxl-users] VXL and Matlab
>=20
>=20
>=20
> Thanks, Peter! But... I am linking my code with all those=20
> libraries: -lvnl=20
> -lmvl -lnetlib -lvbl -lvgl -lvcl -lvil1 -lvil -lvnl_algo=20
> -lvul -lvgl_algo.=20
> Even so, it is missing a symbol that is inside of vgl or=20
> vgl_algo. This is=20
> leaving me crazy! :-(
>=20
> Jose Franca
>=20
>=20
>=20
> > >=20
> _ZmlIdE17vgl_homg_point_2dIT_ERK16vnl_matrix_fixedIS1_Lj3ELj3EERKS2_
> > > ..
> > > I am linking "libvgl.a" and "libvgl_algo.a" with my code.
> >
> >The library vgl_algo depends on vnl_algo, which in turn=20
> depends on vnl
> >and netlib.  So you will have to add some more libraries before all
> >"symbols" are resolved.
> >
> >Use the c++filt command to find out about the "unmangled" form of the
> >missing symbols; for example, the above mentioned missing=20
> symbol is the
> >function
> >operator*(vnl_matrix_fixed<double,3,3>const&,vgl_homg_point_2
> d<double>const&)
> >
> >This function is implemented in=20
> vgl/algo/vgl_homg_operators_2d.txx and
> >instantiated by compiling the source file
> >vgl/algo/Templates/vgl_homg_operators_2d+double-.cxx so=20
> don't forget to
> >add that file to your vgl_algo build!
> >
> >--	Peter.
> >
> >
> >_______________________________________________
> >Vxl-users mailing list
> >Vxl-users@...
> >https://lists.sourceforge.net/lists/listinfo/vxl-users
>=20
>=20
>=20
>=20
> _______________________________________________
> Vxl-users mailing list
> Vxl-users@...
> https://lists.sourceforge.net/lists/listinfo/vxl-users
>=20

Re: [Vxl-users] VXL and Matlab

[Peter Vanroose <peter_vanroose@ya...>]

I fould the following *link* option (i.e., when building the .a
library) which could be what you need:
-Wl,--export-all-symbols
I suspect that this will export the "weak" symbols to the .a as well;
not sure, though.

--	Peter.

Re: [Vxl-users] VXL and Matlab

[Jose Alexandre de Franca <josealexandre@ms...>]

Hi, Peter!

God blesses you!!! I will try this. But... But... Where I should put that 
option? In CMAKE_EXE_LINKER_FLAGS?

Jose Franca

>From: Peter Vanroose <peter_vanroose@...>
>Reply-To: p.vanroose@...
>To: Jose Alexandre de Franca <josealexandre@...>,  
>vxl-users@...
>Subject: Re: VXL and Matlab
>Date: Tue, 6 Jun 2006 08:38:08 +0200 (CEST)
>
>I fould the following *link* option (i.e., when building the .a
>library) which could be what you need:
>-Wl,--export-all-symbols
>I suspect that this will export the "weak" symbols to the .a as well;
>not sure, though.
>
>--	Peter.

Re: [Vxl-users] VXL and Matlab

[Peter Vanroose <peter_vanroose@ya...>]

> Where I should put that option? In CMAKE_EXE_LINKER_FLAGS?

Sorry, I cannot help you with this; I'm not using CMake on a regular
basis.
Maybe you could contact the CMake mailing list.
In any case, the problem is that the required (weak) symbols are in the
.o files but not in the .a library.

--	Peter.

Re: [Vxl-users] VXL and Matlab

[Jose Alexandre de Franca <josealexandre@ms...>]

Hello!

I put those options in

'CMAKE_MODULE_LINKER_FLAGS=-Wl,--export-all-symbols'.

And... It didn't work. :-(  I still have "W" instead of "T."

Well... I will continue trying.

Jose Franca



>I fould the following *link* option (i.e., when building the .a
>library) which could be what you need:
>-Wl,--export-all-symbols
>I suspect that this will export the "weak" symbols to the .a as well;
>not sure, though.
>
>--	Peter.
>
>
>_______________________________________________
>Vxl-users mailing list
>Vxl-users@...
>https://lists.sourceforge.net/lists/listinfo/vxl-users

Re: [Vxl-users] VXL and Matlab

[Jose Alexandre de Franca <josealexandre@ms...>]

Hi, Fred!

>Are you building static VXL libraries, and then trying to link what you 
>need to make a single shared library for Matlab's loadlibrary call?

Yes, I am try do that.

>This following CMakeLists.txt files shows how we have done this.  I know 
>this works for Windows.  I think it works for Linux.
>
>IF( CMAKE_SYSTEM_NAME MATCHES SunOS )
>   SET( TYPE "" )
>ELSE( CMAKE_SYSTEM_NAME MATCHES SunOS )
>   SET( TYPE "SHARED" )
>ENDIF( CMAKE_SYSTEM_NAME MATCHES SunOS )
>
>INCLUDE_DIRECTORIES( ${VXL_GEL_INCLUDE_DIR} )
>INCLUDE_DIRECTORIES( ${VXL_RPL_INCLUDE_DIR} )
>
>SET( foobar_source_files
>      foobar_impl.txx    foobar_impl.h
>      foobar.cxx    foobar.h
>)
>
>AUX_SOURCE_DIRECTORY( Templates foobar_source_files )
>ADD_LIBRARY( foobar ${TYPE} ${foobar_source_files} )
>TARGET_LINK_LIBRARIES( foobar vil vil_algo vnl img vul )

Hummm... I don't understand this stuff. I don't know cmake very well.

Jose Franca