RE: [ECOS] C Linkage for C++ Files

RE: [ECOS] C Linkage for C++ Files

[Dan Conti]

It would be as simple as wrapping the relevant C++ code in 'extern "C"' decls.

-----Original Message-----
From: Fred Woolsey [mailto:fwsbcon@fwsbcon.com]
Sent: Monday, January 06, 2003 5:19 PM
To: ecos-discuss
Subject: Re: [ECOS] C Linkage for C++ Files


Dunno... would it?

Thanks for the help (I think..),
Fred Woolsey

(PS: A question typically expects an answer, not another question.)


----- Original Message -----
From: "Greg Lanthier" <greg_lanthierca@yahoo.ca>
To: "Fred Woolsey" <fwsbcon@fwsbcon.com>; "ecos-discuss"
<ecos-discuss@sources.redhat.com>
Sent: Monday, January 06, 2003 8:11 PM
Subject: Re: [ECOS] C Linkage for C++ Files


> It wouldn't be as simple as wrapping the relevant C++
> code in 'extern "C"' decls, would it?
>
> Greg
>
>  --- Fred Woolsey <fwsbcon@fwsbcon.com> wrote: > Hi
> all,
> >
> > Can anyone help explain how to go about compiling a
> > C++ file with C linkage?
> > The eCos reference manual makes a reference to
> > this... Is there a switch or
> > a #pragma for this?
> >
> > Thanks and Best Regards,
> > Fred Woolsey
> >
> >
> >
> > --
> > Before posting, please read the FAQ:
> > http://sources.redhat.com/fom/ecos
> > and search the list archive:
> > http://sources.redhat.com/ml/ecos-discuss
> >
>
> ______________________________________________________________________
> Post your free ad now! http://personals.yahoo.ca
>
> --
> Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> and search the list archive: http://sources.redhat.com/ml/ecos-discuss
>
>
>
>



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Re: [ECOS] C Linkage for C++ Files

[Fred Woolsey]

Dan,

Thanks... but I'd figured this out already, believe it or not...

<<Getting up on my soapbox- this isn't directed at you, Dan...>>

Those with better knowledge ought to know better... when someone asks what
seems to be a stupid question, it isn't necessary to give a stupid answer...

BTW, Greg- Thanks for the tip... I was able to find some useful info in the
GCC manual by way of a sidelong search for "extern"...

Hoping we both have learned something,
Fred Woolsey

----- Original Message -----
From: "Dan Conti" <danc@fullplaymedia.com>
To: "ecos-discuss" <ecos-discuss@sources.redhat.com>
Sent: Monday, January 06, 2003 8:43 PM
Subject: RE: [ECOS] C Linkage for C++ Files


It would be as simple as wrapping the relevant C++ code in 'extern "C"'
decls.

-----Original Message-----
From: Fred Woolsey [mailto:fwsbcon@fwsbcon.com]
Sent: Monday, January 06, 2003 5:19 PM
To: ecos-discuss
Subject: Re: [ECOS] C Linkage for C++ Files


Dunno... would it?

Thanks for the help (I think..),
Fred Woolsey

(PS: A question typically expects an answer, not another question.)


----- Original Message -----
From: "Greg Lanthier" <greg_lanthierca@yahoo.ca>
To: "Fred Woolsey" <fwsbcon@fwsbcon.com>; "ecos-discuss"
<ecos-discuss@sources.redhat.com>
Sent: Monday, January 06, 2003 8:11 PM
Subject: Re: [ECOS] C Linkage for C++ Files


> It wouldn't be as simple as wrapping the relevant C++
> code in 'extern "C"' decls, would it?
>
> Greg
>
>  --- Fred Woolsey <fwsbcon@fwsbcon.com> wrote: > Hi
> all,
> >
> > Can anyone help explain how to go about compiling a
> > C++ file with C linkage?
> > The eCos reference manual makes a reference to
> > this... Is there a switch or
> > a #pragma for this?
> >
> > Thanks and Best Regards,
> > Fred Woolsey
> >
> >
> >
> > --
> > Before posting, please read the FAQ:
> > http://sources.redhat.com/fom/ecos
> > and search the list archive:
> > http://sources.redhat.com/ml/ecos-discuss
> >
>
> ______________________________________________________________________
> Post your free ad now! http://personals.yahoo.ca
>
> --
> Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> and search the list archive: http://sources.redhat.com/ml/ecos-discuss
>
>
>
>



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Re: [ECOS] C Linkage for C++ Files

[Fred Woolsey]

Hi Sai,

Thanks... I did some research after Greg's response and found just what you
so kindly explained... I appreciate it!  BTW- I have tried it and it does in
fact work just fine.

Cheers,
Fred Woolsey

----- Original Message -----
From: "sai jayram" <sai@cdotb.ernet.in>
To: "Greg Lanthier" <greg_lanthierca@yahoo.ca>
Cc: "Fred Woolsey" <fwsbcon@fwsbcon.com>; "ecos-discuss"
<ecos-discuss@sources.redhat.com>
Sent: Monday, January 06, 2003 11:36 PM
Subject: Re: [ECOS] C Linkage for C++ Files


>
> On Mon, 6 Jan 2003, Greg Lanthier wrote:
>
> > It wouldn't be as simple as wrapping the relevant C++
> > code in 'extern "C"' decls, would it?
>
>
> This works. I have used such things in my code.
>
> ex: if you want to call a function named "function_in_cplus()" written in
> C++ from a C routine, then the following will do.
>
> C function
>
> ---
> ---
> ---
>
> function_in_cplus();
>
> ---
> ---
> ---
>
>
>
> c++ file
>
> extern "C"
> {
> function_in_cplus();
> }
>
> function_in_cplus()
> {
> ----
> ----
> ----
> ---
> }
>
>
>
>
>
>
>
>
>
> >
> > Greg
> >
> >  --- Fred Woolsey <fwsbcon@fwsbcon.com> wrote: > Hi
> > all,
> > >
> > > Can anyone help explain how to go about compiling a
> > > C++ file with C linkage?
> > > The eCos reference manual makes a reference to
> > > this... Is there a switch or
> > > a #pragma for this?
> > >
> > > Thanks and Best Regards,
> > > Fred Woolsey
> > >
> > >
> > >
> > > --
> > > Before posting, please read the FAQ:
> > > http://sources.redhat.com/fom/ecos
> > > and search the list archive:
> > > http://sources.redhat.com/ml/ecos-discuss
> > >
> >
> > ______________________________________________________________________
> > Post your free ad now! http://personals.yahoo.ca
> >
> > --
> > Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> > and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> >
> >
>
>
> --
> Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> and search the list archive: http://sources.redhat.com/ml/ecos-discuss
>
>
>
>



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Re: [ECOS] C Linkage for C++ Files

[sai jayram]

On Mon, 6 Jan 2003, Greg Lanthier wrote:

> It wouldn't be as simple as wrapping the relevant C++
> code in 'extern "C"' decls, would it?


This works. I have used such things in my code.

ex: if you want to call a function named "function_in_cplus()" written in
C++ from a C routine, then the following will do.

C function

---
---
---

function_in_cplus();

---
---
---



c++ file

extern "C"
{
	function_in_cplus();
}

function_in_cplus()
{
	----
	----
	----
	---
}

 







> 
> Greg
> 
>  --- Fred Woolsey <fwsbcon@fwsbcon.com> wrote: > Hi
> all,
> > 
> > Can anyone help explain how to go about compiling a
> > C++ file with C linkage?
> > The eCos reference manual makes a reference to
> > this... Is there a switch or
> > a #pragma for this?
> > 
> > Thanks and Best Regards,
> > Fred Woolsey
> > 
> > 
> > 
> > -- 
> > Before posting, please read the FAQ:
> > http://sources.redhat.com/fom/ecos
> > and search the list archive:
> > http://sources.redhat.com/ml/ecos-discuss
> >  
> 
> ______________________________________________________________________ 
> Post your free ad now! http://personals.yahoo.ca
> 
> -- 
> Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> and search the list archive: http://sources.redhat.com/ml/ecos-discuss
> 
> 


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Re: [ECOS] C Linkage for C++ Files

[Fred Woolsey]

Dunno... would it?

Thanks for the help (I think..),
Fred Woolsey

(PS: A question typically expects an answer, not another question.)


----- Original Message -----
From: "Greg Lanthier" <greg_lanthierca@yahoo.ca>
To: "Fred Woolsey" <fwsbcon@fwsbcon.com>; "ecos-discuss"
<ecos-discuss@sources.redhat.com>
Sent: Monday, January 06, 2003 8:11 PM
Subject: Re: [ECOS] C Linkage for C++ Files


> It wouldn't be as simple as wrapping the relevant C++
> code in 'extern "C"' decls, would it?
>
> Greg
>
>  --- Fred Woolsey <fwsbcon@fwsbcon.com> wrote: > Hi
> all,
> >
> > Can anyone help explain how to go about compiling a
> > C++ file with C linkage?
> > The eCos reference manual makes a reference to
> > this... Is there a switch or
> > a #pragma for this?
> >
> > Thanks and Best Regards,
> > Fred Woolsey
> >
> >
> >
> > --
> > Before posting, please read the FAQ:
> > http://sources.redhat.com/fom/ecos
> > and search the list archive:
> > http://sources.redhat.com/ml/ecos-discuss
> >
>
> ______________________________________________________________________
> Post your free ad now! http://personals.yahoo.ca
>
> --
> Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> and search the list archive: http://sources.redhat.com/ml/ecos-discuss
>
>
>
>



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Re: [ECOS] C Linkage for C++ Files

[Greg Lanthier]

It wouldn't be as simple as wrapping the relevant C++
code in 'extern "C"' decls, would it?

Greg

 --- Fred Woolsey <fwsbcon@fwsbcon.com> wrote: > Hi
all,
> 
> Can anyone help explain how to go about compiling a
> C++ file with C linkage?
> The eCos reference manual makes a reference to
> this... Is there a switch or
> a #pragma for this?
> 
> Thanks and Best Regards,
> Fred Woolsey
> 
> 
> 
> -- 
> Before posting, please read the FAQ:
> http://sources.redhat.com/fom/ecos
> and search the list archive:
> http://sources.redhat.com/ml/ecos-discuss
>  

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[ECOS] C Linkage for C++ Files

[Fred Woolsey]

Hi all,

Can anyone help explain how to go about compiling a C++ file with C linkage?
The eCos reference manual makes a reference to this... Is there a switch or
a #pragma for this?

Thanks and Best Regards,
Fred Woolsey



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