Mailing list for MinGW developers. A closed list, but useful to browse through to see the current MinGW developer activities.

Earnie Boyd | 14 Jun 2012 15:51

Picon

GCC 4.7 ABI incompatibility

Because of the -mms-bitfields default of the newly release GCC 4.7 we
have a complete mess on our hands with regard to package requirements.
 Chris is about to release a -2 version of the current mingwrt and
w32api libraries compiled with this version of the compiler, however
it should only be installed with GCC 4.7.  The xml meta data for
mingwrt and w32api will need to reflect the GCC version requirements
as well as the xml meta data for GCC needs to reflect the mingwrt and
w32api versions in its requirements.  How do we best handle this
issue?

--

-- 
Earnie
-- https://sites.google.com/site/earnieboyd

------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/

Chris Sutcliffe | 14 Jun 2012 16:56

Picon

Re: GCC 4.7 ABI incompatibility

On 14 June 2012 09:51, Earnie Boyd wrote:
> Because of the -mms-bitfields default of the newly release GCC 4.7 we
> have a complete mess on our hands with regard to package requirements.
>  Chris is about to release a -2 version of the current mingwrt and
> w32api libraries compiled with this version of the compiler, however
> it should only be installed with GCC 4.7.  The xml meta data for
> mingwrt and w32api will need to reflect the GCC version requirements
> as well as the xml meta data for GCC needs to reflect the mingwrt and
> w32api versions in its requirements.  How do we best handle this
> issue?

Is the -mms-bitfields the only ABI change?  If so, I already compile
mingwrt and w32api with this modifier set.

Chris

--

-- 
Chris Sutcliffe
http://emergedesktop.org
http://www.google.com/profiles/ir0nh34d

------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/

Charles Wilson | 14 Jun 2012 17:22

Picon

Re: GCC 4.7 ABI incompatibility

On 6/14/2012 9:51 AM, Earnie Boyd wrote:
> Because of the -mms-bitfields default of the newly release GCC 4.7 we
> have a complete mess on our hands with regard to package requirements.
>  Chris is about to release a -2 version of the current mingwrt and
> w32api libraries compiled with this version of the compiler, however
> it should only be installed with GCC 4.7.  The xml meta data for
> mingwrt and w32api will need to reflect the GCC version requirements
> as well as the xml meta data for GCC needs to reflect the mingwrt and
> w32api versions in its requirements.  How do we best handle this
> issue?

AFAIK, all of the add-on [*] libraries we distribute for mingw32 are
compiled with -mms-bitfields and always have been at least as far back
as 2009, so this doesn't affect *our* offerings at all.

[*] that is, everything *but* the core stuff (of which I am not sure
whether they have previously been built with ms-bitfields or not) - such
as mingwrt and w32api.

However, there is an *additional* ABI incompatibility in 4.7 IIRC, for
C++.  I'll have to research the details but I'm swamped right now.
Check the mailing list for a question I posted and Kai answered, no more
than 6 months ago (but at least 2 months back).

--
Chuck

------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and

(Continue reading)

NightStrike | 15 Jun 2012 12:34

Picon

Re: GCC 4.7 ABI incompatibility

On Thu, Jun 14, 2012 at 5:22 AM, Charles Wilson
<cwilso11@...> wrote:
> However, there is an *additional* ABI incompatibility in 4.7 IIRC, for
> C++.  I'll have to research the details but I'm swamped right now.
> Check the mailing list for a question I posted and Kai answered, no more
> than 6 months ago (but at least 2 months back).

Which mailing list?

------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/

Keith Marshall | 17 Jun 2012 18:43

Picon

www.mingw.org pages added

On 04/05/12 15:48, Keith Marshall wrote:
> On 03/05/12 14:00, Earnie Boyd wrote:
>> On Wed, Apr 25, 2012 at 8:55 AM, Earnie Boyd
>> <earnie@...> wrote:
>>> I've been adding pages to MinGW.org indexed in a block on the right
>>> titled "What Can You Do for MinGW?"  I would like feedback for the
>>> content in those pages.
>>
>> Ping.  Anyone?
> 
> I had a couple of observations, but I'll have to get back to you with them.

Apologies for the delay in getting back to this.  One of my observations
related equally to two pages, and was trivial:

* On each of the "Drupal Administration" and the "Content
  Administration" pages, you had said:

  "We have need of someone(s) ..."

  That's a grammatical faux-pas, since someone is strictly
  singular.  I've gone ahead, and removed the offending "(s)",
  in both cases.

Beyond that, I had just one other issue:

* On the "Software Package Contribution" page, I see:

  "... all packages should meet the guidelines of mgwport and
  have the xml data required for mingw-get to install it."

(Continue reading)

Keith Marshall | 17 Jun 2012 19:14

Picon

Re: [Mingw-users] MinGW GCC 4.7.0 released

On 14/06/12 14:16, Chris Sutcliffe wrote:
> I can roll-out a new '-2' release of the existing versions fairly
> quickly.  Doing another sweep of open issues on each existing version
> and looking at addressing them will take me at least a couple of weeks
> given my current workload.
> 
> Any preference?

A new -2 release, rebuilt from *currently released* source tarballs, please.

Eli has pointed out a potentially ABI breaking change in the dirent.c
implementation in mingwrt.  Yeah, mea culpa.  The old implementation was
broken, and I fixed it, but in so doing I changed the internal layout of
the dirent struct, (and thus, also the DIR reference type), without
considering the possibility of third-party libraries compiled against
the old version failing, unless they too are recompiled.

I'm reluctant to revert to the old, broken implementation, but we do
need to agree how we move forward, even if that is to accept the ABI
change, bumping the major version from 3.x to 4.x, and advising users of
third-party libraries that the may need to recompile them, in order to
maintain ABI consistency.  (The alternative may be to try to rework the
new implementation around a backwardly compatible, but necessarily
grossly vulgar and inefficient, alternative dirent struct declaration).

--

-- 
Regards,
Keith.

------------------------------------------------------------------------------

(Continue reading)

Chris Sutcliffe | 18 Jun 2012 03:12

Picon

Re: [Mingw-users] MinGW GCC 4.7.0 released

On 17 June 2012 13:14, Keith Marshall
<keithmarshall@...> wrote:
> On 14/06/12 14:16, Chris Sutcliffe wrote:
>> I can roll-out a new '-2' release of the existing versions fairly
>> quickly.  Doing another sweep of open issues on each existing version
>> and looking at addressing them will take me at least a couple of weeks
>> given my current workload.
>>
>> Any preference?
>
> A new -2 release, rebuilt from *currently released* source tarballs, please.

Fair enough, I will work on them shortly and hopefully will have them
out mid-week.

> Eli has pointed out a potentially ABI breaking change in the dirent.c
> implementation in mingwrt.  Yeah, mea culpa.  The old implementation was
> broken, and I fixed it, but in so doing I changed the internal layout of
> the dirent struct, (and thus, also the DIR reference type), without
> considering the possibility of third-party libraries compiled against
> the old version failing, unless they too are recompiled.
>
> I'm reluctant to revert to the old, broken implementation, but we do
> need to agree how we move forward, even if that is to accept the ABI
> change, bumping the major version from 3.x to 4.x, and advising users of
> third-party libraries that the may need to recompile them, in order to
> maintain ABI consistency.  (The alternative may be to try to rework the
> new implementation around a backwardly compatible, but necessarily
> grossly vulgar and inefficient, alternative dirent struct declaration).

(Continue reading)

waterlan | 18 Jun 2012 09:31

Picon

Picon

Re: GCC 4.7 ABI incompatibility

Charles Wilson schreef op 2012-06-14 17:22:

> On 6/14/2012 9:51 AM, Earnie Boyd wrote:
>
>> Because of the -mms-bitfields default of the newly release GCC 4.7 
>> we
>> have a complete mess on our hands with regard to package 
>> requirements.
>> Chris is about to release a -2 version of the current mingwrt and
>> w32api libraries compiled with this version of the compiler, however 
>> it
>> should only be installed with GCC 4.7. The xml meta data for mingwrt
>> and w32api will need to reflect the GCC version requirements as well 
>> as
>> the xml meta data for GCC needs to reflect the mingwrt and w32api
>> versions in its requirements. How do we best handle this issue?
>
> AFAIK, all of the add-on [*] libraries we distribute for mingw32 are
> compiled with -mms-bitfields and always have been at least as far 
> back
> as 2009, so this doesn't affect *our* offerings at all.
>
> [*] that is, everything *but* the core stuff (of which I am not sure
> whether they have previously been built with ms-bitfields or not) - 
> such
> as mingwrt and w32api.
>
> However, there is an *additional* ABI incompatibility in 4.7 IIRC, 
> for
> C++. I'll have to research the details but I'm swamped right now.

(Continue reading)

Earnie Boyd | 18 Jun 2012 13:40

Picon

Re: GCC 4.7 ABI incompatibility

On Mon, Jun 18, 2012 at 3:31 AM, waterlan wrote:
> What happens if users keep on using an older than 4.7 gcc, and use the
> new gcc 4.7 rebuild libraries? In other words, if all libraries are
> rebuild, are the users than forced to use gcc 4.7?

If a library contains C++ then definitely; if it is strictly C then
maybe.  IMO, we should tie the library dependencies to the GCC version
regardless.

--

-- 
Earnie
-- https://sites.google.com/site/earnieboyd

------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/

Earnie Boyd | 18 Jun 2012 13:41

Picon

Re: [Mingw-users] MinGW GCC 4.7.0 released

On Sun, Jun 17, 2012 at 9:12 PM, Chris Sutcliffe wrote:
> I think we should bump to 4.x as opposed to try and maintain backward
> compatibility.

I agree.

--

-- 
Earnie
-- https://sites.google.com/site/earnieboyd

------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/

Group

gmane.comp.gnu.mingw.devel.

Project Web Page

Mailing list for MinGW developers. A closed list, but useful to browse through to see the current MinGW developer activities.

Search Archive

Page

1 | 2 | 3 | 4

Articles in period: 33

June 2012

Language

Change language

Options

Current view: Threads only / Showing only 20 lines / Not hiding cited text.
Change to All messages, whole messages, or hide cited text.

Post a message
NNTP Newsgroup
Classic Gmane web interface
XML

XML

RSS Feed
List Information

About Gmane

Recent entries

bug 1855: libmudflap -- MinGW thread (3 May 2013)
Please test: gcc 4.8.0-1 and binutils 2.23.2-3 (24 Apr 2013)
Improving the performance of "mingw-get update" (16 Apr 2013)
Hard drive failure (9 Apr 2013)
gcc 4.8.0 Ada error (8 Apr 2013)
Test BinUtils v2.23.2 (3 Apr 2013)
MSYS2 develop (2 Apr 2013)
SF Export Control - Feature request (31 Mar 2013)
MSYS2 mintty (31 Mar 2013)
Build Binutils -- warning: library `c:/mingw/lib/libintl.la' was moved (25 Mar 2013)
Build Binutils package (25 Mar 2013)
MSYS2 "noacl" (24 Mar 2013)
MSYS2 "noacl" (24 Mar 2013)
Maintainers wiki page [WAS: Introducing Arthur] (22 Mar 2013)
Arthur's test run on gcc (21 Mar 2013)
MSYS2 "noacl" (21 Mar 2013)
Introducing Arthur (20 Mar 2013)
http://www.mingw.org/license (13 Mar 2013)
New Repository: msys2-tools (7 Mar 2013)
New repository: mingw-org-wsl-extras (7 Mar 2013)
ChangeLog - branch control and synchronization (6 Mar 2013)

Archives

1	May 2013
71	April 2013
111	March 2013
66	February 2013
58	January 2013
1	November 2012
33	October 2012
66	September 2012
58	August 2012
47	July 2012
33	June 2012
14	May 2012
55	April 2012
8	March 2012
42	February 2012
36	January 2012
43	December 2011
104	November 2011
76	October 2011
2	September 2011
29	August 2011
9	July 2011
19	June 2011
75	May 2011
10	April 2011
25	March 2011
14	February 2011
24	January 2011
5	December 2010
3	November 2010
18	October 2010
28	September 2010
57	August 2010
78	July 2010
131	June 2010
77	May 2010
35	April 2010
48	March 2010
64	February 2010
78	January 2010
4	December 2009
33	November 2009
50	October 2009
23	September 2009
14	August 2009
107	July 2009
32	June 2009
10	May 2009
72	April 2009
17	March 2009
2	February 2009
9	January 2009
21	December 2008
4	November 2008
32	October 2008
99	September 2008
3	August 2008
9	July 2008
57	June 2008
20	May 2008
153	April 2008
65	March 2008
24	February 2008
17	January 2008
13	December 2007
68	November 2007
6	October 2007
20	September 2007
51	August 2007
35	July 2007
6	June 2007
111	May 2007
50	April 2007
123	March 2007
57	February 2007
110	January 2007
21	December 2006
55	November 2006
31	October 2006
62	September 2006
28	August 2006
8	July 2006
38	June 2006
132	May 2006
62	April 2006
51	March 2006
6	February 2006
40	January 2006
21	December 2005
14	November 2005
16	October 2005
16	September 2005
30	August 2005
22	July 2005
112	June 2005
14	May 2005
20	April 2005
10	March 2005
24	February 2005
29	January 2005
22	December 2004
61	November 2004
4	October 2004
28	September 2004
3	August 2004
26	July 2004
20	June 2004
56	May 2004
19	April 2004
32	March 2004
45	February 2004
9	January 2004
17	December 2003
36	November 2003
25	October 2003
46	September 2003
29	August 2003
74	July 2003
25	June 2003
47	May 2003
13	April 2003
71	March 2003
70	February 2003
74	January 2003
98	December 2002
132	November 2002
80	October 2002
1	July 2001

Design

Zawodny | Right Menu | Left Menu

Your Own Design

Paste the URL of your CSS below. Download CSS template