Re: address@hidden: [Pkg-octave-devel] Bug#434415: octave2.9-headers: Changed F77_FUNC_ macro]

[Kim Hansen]

On 7/24/07, John W. Eaton <address@hidden> wrote:
> On 24-Jul-2007, Thomas Weber wrote:
>
> | Am Montag, 23. Juli 2007 22:12:14 schrieb Rafael Laboissiere:
> | > ----- Forwarded message from Kim Hansen <address@hidden> -----
> | >
> | > From: Kim Hansen <address@hidden>
> | > Subject: [Pkg-octave-devel] Bug#434415: octave2.9-headers: Changed
> | > F77_FUNC_ macro
> | > Date: Mon, 23 Jul 2007 19:51:13 +0200
> | > To: Debian Bug Tracking System <address@hidden>
> | > Reply-To: Kim Hansen <address@hidden>, address@hidden
> | > Message-ID: <address@hidden>
> | >
> | > Package: octave2.9-headers
> | > Version: 1:2.9.12-2+b3
> | > Severity: normal
> | >
> | >
> | > I don't know if this is a real bug, but between version 2.9.10-4.1 and
> | > 1:2.9.12-2+b3 has the definition of the macro F77_FUNC_ in
> | > /usr/include/octave/config.h changed from
> | >   #define F77_FUNC_(name,NAME) name ## _
> | > to
> | >   #define F77_FUNC_(name,NAME) name ## __
> |
> | If I read the output of
> |       cvs annotate configure.in
> | correctly, John hasn't touched these lines for about 5 years. Could this be
> | caused by our (=Debian) current mixture of g77 and gfortran?
>
> If you mean these lines in the generated config.h file:
>
>   /* Define to a macro mangling the given C identifier (in lower and upper
>      case), which must not contain underscores, for linking with Fortran. */
>   #define F77_FUNC(name,NAME) name ## _
>
>   /* As F77_FUNC, but for C identifiers containing underscores. */
>   #define F77_FUNC_(name,NAME) name ## __

Yes, I am talking about the last one of those two lines.

> In any case, we probably need to think about how to avoid installing
> the generated config.h.  We may still need a subset of that file
> installed, but it should probably have a different name.

The reason I became aware of this change is a warning I get when
compiling an oct-file that uses an other library. This library also
uses fortran code and it also have an auto generated F77_FUNC_ macro,
the two macros are different, thus the warning.

Moving config.h away would silence the warning, and solve the problem
unless it was an important warning. But I don't know if it is, I know
too little about fortran linking, I was just curious about the change
in the macro.

Regards,
--
Kim Hansen
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2860 Søborg
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