[Python-Dev] ctypes and powerpc
theller at ctypes.org
Fri Nov 24 20:19:54 CET 2006
I'd like to ask for help with an issue which I do not know
how to solve.
Please see this bug http://python.org/sf/1563807
"ctypes built with GCC on AIX 5.3 fails with ld ffi error"
Apparently this is a powerpc machine, ctypes builds but cannot be imported
because of undefined symbols like 'ffi_call', 'ffi_prep_closure'.
These symbols are defined in file
The whole contents of this file is enclosed within a
block. IIRC, this block has been added by Ronald for the
Mac universal build. Now, it seems that on the AIX machine
the __ppc__ symbols is not defined; removing the #ifdef/#endif
makes the built successful.
We have asked (in the SF bug tracker) for the symbols that are defined;
one guy has executed 'gcc -v -c empty.c' and posted the output, as far as I
see these are the symbols defined in gcc:
-D__GNUC_MINOR__=9 -D_IBMR2 -D_POWER -D_AIX -D_AIX32 -D_AIX41 -D_AIX43
-D_AIX51 -D_LONG_LONG -D_IBMR2 -D_POWER -D_AIX -D_AIX32 -D_AIX41 -D_AIX43
-D_AIX51 -D_LONG_LONG -Asystem(unix) -Asystem(aix) -D__CHAR_UNSIGNED__
What should we do now? Should the conditional be changed to
#if defined(__ppc__) || defined(_POWER)
or should we suggest to add '-D__ppc__' to the CFLAGS env var, or what?
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