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Date: Wed, 25 Jan 2017 16:12:59 -0800 (PST)
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Subject: Re: micropython djgpp build
From: "multisosnooley AT gmail DOT com [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
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On Wednesday, January 25, 2017 at 6:19:02 PM UTC+3, Ozkan Sezer (sezeroz AT gmail DOT com) [via djgpp AT delorie DOT com] wrote:
> On 1/25/17, multisosnooley AT gmail DOT com [via djgpp AT delorie DOT com]
> <djgpp AT delorie DOT com> wrote:
> > On Wednesday, January 25, 2017 at 3:07:30 PM UTC+3, Ozkan Sezer
> > (sezeroz AT gmail DOT com) [via djgpp AT delorie DOT com] wrote:
> >> On 1/25/17, multisosnooley AT gmail DOT com [via djgpp AT delorie DOT com]
> >> <djgpp AT delorie DOT com> wrote:
> >> > Hi!
> >> >
> >> > We have a problem with building micropython with djgpp with
> >> > '--gc-sections'
> >> > flag active. It segfaults on linking.
> >> > More info:
> >> > https://github.com/micropython/micropython/issues/2560
> >> > https://github.com/micropython/micropython/pull/2644
> >> >
> >>
> >> Possibly related to this?
> >> https://sourceware.org/bugzilla/show_bug.cgi?id=20401
> >>
> >> Which binutils version are you using?
> >
> > I don't exactly now which version of binutils was used in previous cases,
> > but right now newest available is
> > http://www.delorie.com/pub/djgpp/deleted/v2gnu/bnu226sr3.zip and in bug you
> > reference fix comes in 2.27, but it is not released yet. Or?
> >
> 
> There is a djgpp port of 2.27:
> http://www.delorie.com/pub/djgpp/current/v2gnu/bnu227s.zip
> http://www.delorie.com/pub/djgpp/current/v2gnu/bnu227b.zip
> Besides, the fix is (should be) applicable to 2.26 too.
> 
> Looking at the links you provided:
> https://github.com/micropython/micropython/issues/2560#issuecomment-260157891
> mentions binutils 2.20.1.20100303: if that is version giving you the
> segfault then I don't know, because but as far as I remember the
> --gc-sections support for coff and pe targets began with
> https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0f088b2a
> and that corresponds to either 2.25.1 or 2.26

Just tested:

[poh ~/tmp/upython]$ cat test.c 
int main () { return 0; }
[poh ~/tmp/upython]$ djgpp-6.2.0/bin/i586-pc-msdosdjgpp-gcc -Wl,--gc-sections test.c
collect2: fatal error: ld terminated with signal 11 [Segmentation fault], core dumped
compilation terminated.
[poh ~/tmp/upython]$ djgpp-6.2.0/bin/i586-pc-msdosdjgpp-gcc --version
i586-pc-msdosdjgpp-gcc (GCC) 6.2.0
Copyright (C) 2016 Free Software Foundation, Inc.                                                                                           
This is free software; see the source for copying conditions.  There is NO                                                                  
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.                                                                 
                                                                                                                                            
[poh ~/tmp/upython]$ djgpp-6.2.0/bin/i586-pc-msdosdjgpp-ld --version
GNU ld (GNU Binutils) 2.26.20160125                                                                                                         
Copyright (C) 2015 Free Software Foundation, Inc.                                                                                           
This program is free software; you may redistribute it under the terms of                                                                   
the GNU General Public License version 3 or (at your option) a later version.                                                               
This program has absolutely no warranty.  

Will try to test with 2.27