[Distutils] Linking C++ under Linux
wfspotz at sandia.gov
Fri Jan 9 17:53:05 EST 2004
I am developing a set of extension modules for python written in C++
and have successfully written a setup.py that works on my mac.
Portability is important, though, and under Linux, the linking command
I get from distutils appears to be not what I want.
Specifically, on the mac, the compile command from distutils is gcc
with the appropriate command line options and the link command is c++.
On the Linux machine, gcc is both the compile and linking command, and
when the module is loaded, I get
undefined symbol: endl__FR7ostream
which sure looks like a missing c++ library to me.
In my searching through distutils documentation, all I can find is a
warning to "Be sure to use appropriate extensions to distinguish C++
source files: .cc and .cpp seem to be recognized by both Unix and
Windows compilers." But changing my suffix from .cxx to .cpp didn't
help. (I was using .cxx because that is the default suffix produced by
SWIG -- but I'm currently calling swig via a Makefile because distutils
doesn't appear to be robust enough yet to handle everything I need it
sahp4960(41)$ uname -a
Linux sahp4960 2.4.18-17.7.xsmp #1 SMP Tue Oct 8 12:37:04 EDT 2002 i686
Python 2.2.1 (#1, May 14 2002, 16:46:34)
[GCC 2.96 20000731 (Red Hat Linux 7.1 2.96-98)] on linux2
[It just occurred to me that this could be a python version issue, as
my working mac version is under python 2.3. I'll be looking into this,
but would still appreciate a response.]
** Bill Spotz **
** Sandia National Laboratories Voice: (505)845-0170 **
** P.O. Box 5800 Fax: (505)284-5451 **
** Albuquerque, NM 87185-0316 Email: wfspotz at sandia.gov **
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