Your message dated Sat, 3 Dec 2005 17:02:05 +0100
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has caused the Debian Bug report #341812,
regarding swig: C preprocessor apparently broken
to be marked as having been forwarded to the upstream software
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Date: Sat, 3 Dec 2005 17:02:05 +0100
From: Torsten Landschoff <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: Swig preprocessor broken?
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Hi *,=20
Please have a look at this bug report. I checked that it is in fact the
case that the simple apr.i suggested in the report does not work.=20
----------
=46rom: Peter Samuelson <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: swig: C preprocessor apparently broken
Package: swig
Version: 1.3.27-1
Justification: causes FTBFS of unrelated software (subversion)
swig has a builtin C preprocessor which apparently is doing something
wrong when a .i file includes <apr-0/apr.h> from libapr0-dev:
$ cat apr.c
#include <apr.h>
$ gcc -c -I/usr/include/apr-0 apr.c
$ gcc -c -ansi -I/usr/include/apr-0 apr.c
In file included from apr.c:1:
/usr/include/apr-0/apr.h:400:2: error: #error no decision has been made o=
n APR_PATH_MAX for your platform
$ gcc -c -ansi -D_XOPEN_SOURCE=3D500 -I/usr/include/apr-0 apr.c
$ cat apr.i
%include apr.h
$ swig -python -D_XOPEN_SOURCE=3D500 -I/usr/include/apr-0 apr.i
/usr/include/apr-0/apr.h:400: Error: no decision has been made on APR_PAT=
H_MAX for your platform
Of course, there is one horrible workaround:
$ swig -python -DPATH_MAX=3D4096 -I/usr/include/apr-0 apr.i
*** No module name specified using %module or -module.
I am guessing that this bug has always been around, but was hidden
prior to swig 1.3.27 because older swig ignored the "#error" directive.
--------------
The question is if swig should try to follow include nesting at all
which would be needed to get around this problem. I checked 1.3.25 and=20
1.3.27. Both read just apr.h, the first without a hitch, the second
breaks in the #error line.
Opinions?
Greetings
Torsten
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