ITP: octave-2.1.71

[James R. Phillips]

--- "John W. Eaton" <jwe@bevo.che.wisc.edu> wrote:

> From: "John W. Eaton" <jwe@bevo.che.wisc.edu>
> Date: Fri, 1 Jul 2005 09:15:43 -0400
> To: antiskid56-cygwin@yahoo.com
> CC: cygwin-apps@cygwin.com, maintainers@octave.org
> Subject: Re: ITP: octave-2.1.71
> 
> On 30-Jun-2005, James R. Phillips wrote:
> 
> | --- Brian Dessent  wrote:
> | 
> | > Out of curiosity, what if anything have you done to address the SJLJ
> | > issue/PR 14563?  To summarize, the Cygwin packaged gcc has had
> | > --enable-sjlj-exceptions for quite a while because DW2 exceptions are
> | > broken in certain circumstances (namely, when throwing an exception in a
> | > function used in a callback where the caller doesn't know DW2, eg. win32
> | > api.)  I don't know much at all about octave but if it does not use any
> | > callbacks in these situations then it might be worthwhile if you
> | > compiled the binaries with a DW2 EH-enabled gcc, to avoid the massive
> | > speed hit reported.
> | > 
> | > Brian
> | > 
> | 
> | Brian,
> | 
> | This issue occurs in John Eaton's list of stuff to do, but I don't know
> | anything else about it.
> 
> I don't think it is my responsibility to fix a problem that is really
> in GCC or Cygwin.
> 
> Also, I don't think we can build Octave with some special version of
> GCC because Octave has a plugin feature, and I think that pretty much
> requires using the same C++ compiler to build all the parts of Octave
> and the plugins.
> 
> BTW, wasn't there a thread about this recently on the
> cygwin@cygwin.com list (subject Serious performance problems) that
> showed that the problem involved thread handling in Cygwin about as
> much as sjlj exception handling?  I think some progress has been made
> in addressing the problem.
> 
> Anyway, I think the place to fix this problem is in Cygwin or GCC, not
> Octave.
> 
> Having Octave compile and run cleanly with mingw is a separate issue,
> and doesn't really solve the problem for Cgywin users.
> 
> jwe
> 
> 

Looks like oz has spoken ;)

Jim Phillips