[mapserver-users] Possible bug with 3.5 code w/ Proj 4

[Rodrigo Cabral]

Ok then, it is one solution. On the other hand, if making structures the
same size is relevant across different compilation options, then it would be
necessary to search all other structures that have compilation options
defining its members, and to insert paddings properly. For instance, we have
SWIG structures defined all over mapserver objects, not to mention that some
of them are not pointers, but embedded local structures. Finally, why it's
necessary to exist a projectionObj at all, if USE_PROJ is not defined?
Parsing projection structures is not permited when USE_PROJ is disabled,
right?

Cheers,
Rod.

----- Original Message -----
From: "Frank Warmerdam" <warmerdam at pobox.com>
To: "Rodrigo Becke Cabral" <cabral at yadata.net>
Sent: Tuesday, November 20, 2001 12:43 PM
Subject: Re: [mapserver-users] Possible bug with 3.5 code w/ Proj 4


Rodrigo Becke Cabral wrote:

> Hi there, sorry about the intrusion on your chat, but using a "void *" to
> make structures be the same size doesn't sounds good to me. Looks more
like
> Scott is linking code that has been compiled with different options
(w/&w/o
> proj), although he mentioned in it's previous e-mail that he cleaned
> everything up, reconfigured and rebuild the code, still I think
something's
> wrong. Here's the clue from where I make this assumption:
>


Rodrigo,

You are right about linking code compiled with other options.  The problem
is
that he wrote his own mainline program and didn't use the full set of
MapServer
compilation options when he compiled it.  Due to a quirk of the
projectionObj
it has different sizes depending on whether USE_PROJ is defined as the
include files are processed.

In short the problem would never have occured if all the macro definitions
from the MapServer makefile had been used when the custom mainline was
written.
However, to avoid this sort of issue in the future Steve has applied my
suggested patch to ensure that the structures don't depend on the macros to
establish size.

Best regards,

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