[Python-bugs-list] [ python-Bugs-767374 ] #define _XOPEN_SOURCE in pyconfig.h causes problems for AIX

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Bugs item #767374, was opened at 2003-07-07 14:23
Message generated for change (Comment added) made by tepperly
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=767374&group_id=5470

Category: Build
Group: Python 2.3
Status: Open
Resolution: Invalid
Priority: 5
Submitted By: Tom Epperly (tepperly)
Assigned to: Nobody/Anonymous (nobody)
Summary: #define _XOPEN_SOURCE in pyconfig.h causes problems for AIX

Initial Comment:
I installed Python 2.3b1 on an AIX system. The
following simple program fails to compile. This is an
extremely simplified version of an #include problem
that occurs in a larger code that includes Python C
extension modules.

epperly@aixbox[~]>cat test_prog.c
#include <standards.h>
#include <Python.h>
 
int main(char argc, char **argv)
{
  return 0;
}
epperly@aixbox[~]>!new
newcc -Ipython/include/python2.3/ test_prog.c
"python/include/python2.3/pyconfig.h", line 841.9:
1506-236 (W) Macro name _XOPEN_SOURCE has been redefined.
"python/include/python2.3/pyconfig.h", line 841.9:
1506-358 (I) "_XOPEN_SOURCE" is defined on line 89 of
/usr/include/standards.h.
"/usr/include/wchar.h", line 290.68: 1506-046 (S)
Syntax error.
"/usr/include/wchar.h", line 293.68: 1506-046 (S)
Syntax error.
epperly@aixbox[~]>uname -a
AIX aixbox 1 5 006008594C0

The main problem is that pyconfig.h #define's
_XOPEN_SOURCE to 600 and wchar.h only does the right
thing if _XOPEN_SOURCE is defined to be 500.


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>Comment By: Tom Epperly (tepperly)
Date: 2003-07-07 14:52

Message:
Logged In: YES 
user_id=94539

Requiring #include <Python.h> to be first is a regretable
design decision that other software packages regretably also
make. It makes interoperability a challenge.

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Comment By: Tom Epperly (tepperly)
Date: 2003-07-07 14:50

Message:
Logged In: YES 
user_id=94539

I set some environment variables that impact the configure run:
CC=newcc
CXX=newxlC
F77=newxlf
F90=newxlf90 -qsuffix=f=f90
CPP=gcc -E

I am rerunning the test with Python2.3b2. Here is how I am
invoking configure.
./configure --prefix=${HOME}/python23b2 --enable-shared
--disable-ipv6


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Comment By: Martin v. Löwis (loewis)
Date: 2003-07-07 14:47

Message:
Logged In: YES 
user_id=21627

This is not a bug in Python, but in your code. Python.h must
be the first include file.



----------------------------------------------------------------------

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