[Pythonmac-SIG] readline: where and how installed?

[Ronald Oussoren]

On 12-apr-2006, at 23:19, Zachary Pincus wrote:

> This is for Bob Ippolito -

No it isn't, Bob didn't build the 2.4.3 release ;-)

>
> What version of readline comes with the Universal MacPython 2.4.3
> release? And is it statically-linked, or is there a readline dylib
> somewhere in the python framework?

It is a staticly linked version of GNU readline 5.1.

>
> I ask because Michael Broe reported some problems (see below) with
> IPython that I had tracked down to issues with readline 5.1.
> (Basically, the patches to readline 5.1 need to be applied.) It is
> thus of interest as to what version of readline is supplied with
> MacPython, and whether it is statically or dynamically linked.
>
> Also of interest:
> I had asked Michael to run python under GDB to see where the error he
> reported was happening, and Michael had some trouble with that:
>> ~ $ gdb python
>> GNU gdb 6.1-20040303 (Apple version gdb-434) (Wed Nov  2 17:28:16
>> GMT 2005)
>>
>> (gdb) run
>> Starting program: /usr/local/bin/python
>> Reading symbols for shared libraries . done
>>
>> Program received signal SIGTRAP, Trace/breakpoint trap.
>> 0x8fe0100c in __dyld__dyld_start ()
>> (gdb)
>
> This might be partially due to the fact that Michael's not using the
> latest version of GDB, but it's also possible that the problem stems
> from the execve that python is doing inside the fake bundle. If the
> most recent version of GDB can't handle the new python, that's a bit
> of a pain! (I think the problem can be handled by telling GDB to
> ignore SIGTRAPs, but this is a confusing issue...)

That's because the python command is actually pythonw and this execv-s
the real python interpreter to get the right process environment for
GUI programs.

Ronald