[Python-bugs-list] [ python-Bugs-419012 ] #define collision: LONG_BIT

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Bugs item #419012, was updated on 2001-04-25 18:08
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Category: Build
Group: Platform-specific
>Status: Closed
>Resolution: Invalid
Priority: 5
Submitted By: Viktor Ferenczi (complex)
Assigned to: Nobody/Anonymous (nobody)
Summary: #define collision: LONG_BIT

Initial Comment:
Platform: RedHat Linux 7.0, Linux kernel 2.2.17

When building Python 2.1 final release after

./configure --prefix=/usr/local

LONG_BIT definition found in
/usr/local/include/bits/xopen_lim.h causes an error
message originated from LONG_BIT size test in Python.h.

Workaround (only an ugly hack): Insert "#define
LONG_BIT 32" in Python.h before the #ifndef LONG_BIT
line. This causes a #define collision warning, but
Python 2.1 compiles successfully and works.

- Complex -

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Comment By: Tim Peters (tim_one)
Date: 2001-04-25 18:31

Message:
Logged In: YES 
user_id=31435

The GCC version that comes with Red Hat 7.0 is not fit for
distribution.

In particular, it defines LONG_BIT as 64 on 32-bit machines under
certain circumstances, and letting this go unchecked would cause
it to generate bad code for various Python arithmetic operations.

The solution is to download a valid version of GCC.

See

http://www.python.org/cgi-
bin/moinmoin/FrequentlyAskedQuestions#line53

for more information.

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