[Python-Dev] Why is python linked with c++? (original) (raw)

Skip Montanaro skip@pobox.com
Wed, 9 Jul 2003 16:30:01 -0500 

>> What is ccpython.cc and why do I need it?  I don't see it used during
>> the build process.

Martin> It might be MAINOBJ, and it is located Modules. Whether it is on
Martin> your system, I don't know - see configure.in.

I think you misunderstood what I wrote. As far as I can tell, ccpython.cc is not compiled when building python.exe on my Mac. Accordingly, the link step should use gcc, not c++.

>> Regardless whether c++ is supposed to be used to link python.exe on
>> Mac OS X or not, there is still a bug that needs fixing:

Martin> Can you submit a patch? Apparently, configure determines that
Martin> -Kthread is supported on your system. If it isn't, you should
Martin> find out why the test testing for it succeeds.

The -Kthread thing is just a warning. gcc/g++ complains but completes the command, exiting with a 0 status. I tried adding -Werror and -Wall to the command line but the exit status was still 0.

I think you need different check than the usual command completion to determine whether -Kthread should be given or not. If you can suggest some ways to do this with configure macros I will take a stab at it, but I don't understand autoconf/configure well enough. I suspect doing something like

c++ -Kthread ... 2>&1 >/dev/null | egrep 'unrecognized option'

is too fragile, but that may be the only sort of solution available.

I took a quick look at a RH8 machine. Its gcc doesn't understand -Kthreads either. Maybe it's a safe assumption that if $CC == gcc -Kthreads should not be given.

Skip