Re: [Discuss-gnuradio] Quesition Signal Processing Block: Compilation Errors Regarding Multiple Definition

[Jonas]

By the way, when I defined divcom_shared_func.cc in only ONE of the
files, the other files won't compile successfully complaining that
some functions are NOT yet defined.

And so I'm forced to define divcom_shared_func.cc in all the other
files. Doing this results in my original problem... So what do I do?

On 1/15/08, Jonas <address@hidden> wrote:
> I still have the same problem. Actually, I am just including header
> files of my own design. And as par your suggesstion, I decided to
> include them in a file called divcom_shared_func.cc.
>
> In short divcom_shared_func.cc contains only the following lines that
> are needed by my other signal processing blocks:
>
> #include "others.cc"
> #include "elem_matrix.cc"
> using elem_matrix_jonas::elem_matrix;
>
> And the functions defined in these files are all repeatedly used.
>
> Unfortunately, I still get the same errors regarding multiple definitions.
>
> So what do I do now?
>
> =)
>
> On 1/15/08, Jonas <address@hidden> wrote:
> > Thanks!
> >
> > I'll try this.
> >
> > =)
> >
> > On 1/15/08, Eric Blossom <address@hidden> wrote:
> > > On Mon, Jan 14, 2008 at 07:40:26PM +0800, Jonas wrote:
> > > > I have a question.
> > > >
> > > > I am trying to make 4 signal processing blocks wherein some of the
> > > > definitions for its computations will be REPEATEDLY defined. I really
> > > intend
> > > > this. However, basing from the gr-howto module (of which I used the
> > > built-in
> > > > dependencies there), the compiler ALWAYS COMPLAINS of a multiple
> > > definition
> > > > of something that I REALLY INTEND to define repeatedly. This is due to
> > the
> > > > fact that the four signal processing blocks that I made share some
> > COMMON
> > > > signal processing manipulations.
> > > >
> > > > I want to be able to ignore this error and compile the four signal
> > > > processing blocks simultaneously. Is this possible with GNU Radio?
> > > >
> > > > Thanks!
> > >
> > > Don't define the function multiple times, define it once, and include
> > > it in the shared library that you build for the swig module.
> > > E.g., in the "howto" example, create a new file
> > > my_shared_functions.cc, and add it to _howto_la_SOURCES.
> > >
> > > If this doesn't make sense, you may want to read up on shared
> > > libraries, automake and libtool.
> > >
> > > Eric
> > >
> >
>