David Abrahams schrieb: >"Martin v. Löwis" <[EMAIL PROTECTED]> writes: > > > >>David Abrahams wrote: >> >> >>>Unless, of course, I'm missing something. So if I am missing >>>something, what is it? >>> >>> >>You are missing something, and I can only repeat myself. Some systems >>require main() to be compiled as C++, or else constructors may not work >>(and perhaps other things fail as well). >> >> > >Yes, and that becomes important in programs that have constructors. >I.e., C++ programs. The Python executable is not such a program, >except for one C++ file: ccpython.cc. There is no reason that file >couldn't be rewritten as a pure 'C' file and any need for Python to be >linked with G++ would disappear. > > > >>The configure option --with-cxx (documented as "enable C++ support") >>make Python C++ options >> >> > >What are "Python C++ options?" > > > >>work on such systems. It is automatically enabled if a C++ compiler >>is found. >> >>There is configure auto-detection for what linker is used when >>ccpython.o becomes main(). >> >>This is the state of the things as it is. In what way would you like to >>see that state changed? >> >> > >I would like the Python executable never to be linked (or compiled >either) by g++ unless that is explicitly requested by the person >invoking configure or make. > > > >>I could personally accept if ccpython and --with-cxx would be dropped >>entirely (i.e. deliberately breaking systems which require it); >> >> > >I don't believe any systems require it. I realize you have said >otherwise, but after years of working with Boost.Python I'm very >familiar with the issues of dynamic linking and C/C++ interoperability >on a wide variety of platforms, and I'm not convinced by your >assertion. If such a system exists, it should be easy for someone to >point me at it, and show that something breaks. > > > If you build C++ extensions on HP-UX with aCC, Python must be compiled and linked as a C++ program. This is documented. It will not work if Python is compiled and linked as a normal C program (I have tried it). I haven't tried gcc on this platform, but I guess it is the same (compile and link with g++).
Ulli _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com