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Re: Re: Q: python compiled with gcc-3.2?

Hello Norman,

that sounds interesting!

1) --------------------------------------------------------
First the versions of the used tools: gcc, swig, python:

@PC169/.../simple$ gcc -v
Reading specs from /bin/../lib/gcc-lib/i686-pc-cygwin/3.2/specs
Configured with: /netrel/src/gcc-3.2-1/configure
--enable-languages=c,c++,f77,java --enable-libgcj --enable-threads=posix
--with-system-zlib --enable-nls --without-included-gettext
--enable-interpreter --disable-sjlj-exceptions
--disable-version-specific-runtime-libs --enable-shared
--build=i686-pc-linux --host=i686-pc-cygwin --target=i686-pc-cygwin
--enable-haifa --prefix=/usr --exec-prefix=/usr --sysconfdir=/etc
--libdir=/usr/lib --includedir=/nonexistent/include --libexecdir=/usr/sbin
Thread model: posix
gcc version 3.2 20020818 (prerelease)

@PC169/.../simple$ ../../../swig -version

SWIG Version 1.3.16u-20021019-1050
Copyright (c) 1995-1998
University of Utah and the Regents of the University of California
Copyright (c) 1998-2002
University of Chicago

Compiled with CC

@PC169/.../simple$ python
Python 2.2.1 (#1, Jun 25 2002, 10:55:46)
[GCC 2.95.3-5 (cygwin special)] on cygwin
Type "help", "copyright", "credits" or "license" for more information.

2) --------------------------------------------------------
I first try to compile the python example 'simple' in the
After running configure, I copied swig.exe from /bin/swig from cygwin to the
directory SWIG-1.3.16 (building swig myself failed due to an error in some
yacc-file I am not familiar with).
Now, in SWIG-1.3.16/Examples/python/simple, the result of make:

@PC169/.../simple$ make
make -f ../../Makefile SRCS='example.c' SWIG='../../../swig' \
TARGET='example' INTERFACE='example.i' python
make[1]: Entering directory
../../../swig -python  example.i
g++ -c   example_wrap.c example.c  -DHAVE_CONFIG_H -DUSE_DL_IMPORT
gcc -shared example.o  example_wrap.o
/python2.2/config -lpython2.2  -o _example.dll
example_wrap.o(.eh_frame+0x11):example_wrap.c: undefined reference to
collect2: ld returned 1 exit status
make[1]: *** [python] Error 1
make[1]: Leaving directory
make: *** [all] Error 2

The swig call works, and the compilation of the example_wrap.c and example.c
works too.
But the linkage of the _example.dll fails.

The same procedure for gcc-2.95 worked! Unfortunately, I cannot use it with
my gcc-3.2-based library.

It would be interesting whether you can confirm this behaviour with the
simple-example of swig, and in what your environment differs.


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