Re: Building Emacs-cvs on Cygwin (GCC summary)

Re: Building Emacs-cvs on Cygwin (GCC summary)

[Maks Romih]

> GCC-3.4.4-(1/2)                         Segment fault 
> 
> GCC-4.0.3                               OK 
> GCC-4.1.1                               OK 
> 
> GCC-4.2-20061024(prerelease)            M-x undefined 
> GCC-4.3-20061022(experim.)              M-x undefined 
> 
> 
> In conclusion on Cygwin only the build with GCC-4.0.3 and > 4.1.1 seem to 
> work fine. 
> 
> Are there people that can confirm these results?

I can confirm the 3.4.4.1., because I've also had stackdumps when I built the emacs-22.0.50 with GCC 3.4.4.1.

Then I compiled with CFLAGS=-g to see where it breaks but it doesn't break any more, so now I happily use the debug version.

Maks.

Re: Building Emacs-cvs on Cygwin (GCC summary)

[Richard Stallman]

    > GCC-3.4.4-(1/2)                         Segment fault 
    > 
    > GCC-4.0.3                               OK 
    > GCC-4.1.1                               OK 
    > 
    > GCC-4.2-20061024(prerelease)            M-x undefined 
    > GCC-4.3-20061022(experim.)              M-x undefined 
    > 
    > 
    > In conclusion on Cygwin only the build with GCC-4.0.3 and > 4.1.1 seem to 
    > work fine. 

Let's document that people should not use GCC 3.4 on Cygwin.
Where is the best place to document this?

Re: Building Emacs-cvs on Cygwin (GCC summary)

[Eric Hanchrow]

>>>>> "Richard" == Richard Stallman <rms@gnu.org> writes:

    Richard> Let's document that people should not use GCC 3.4 on
    Richard> Cygwin.  Where is the best place to document this?

I vote for nt/INSTALL

-- 
"Hoot" has its heart in the right place, but I have been
unable to locate its brain.
        -- Roger Ebert

Re: Building Emacs-cvs on Cygwin (GCC summary)

[Eli Zaretskii]

> From: Eric Hanchrow <offby1@blarg.net>
> Date: Mon, 30 Oct 2006 12:31:53 -0800
> 
> >>>>> "Richard" == Richard Stallman <rms@gnu.org> writes:
> 
>     Richard> Let's document that people should not use GCC 3.4 on
>     Richard> Cygwin.  Where is the best place to document this?
> 
> I vote for nt/INSTALL

No, that's the wrong file: the problem is in the Cygwin build, which
doesn't use any of the stuff in nt/.

The right place is etc/PROBLEMS.

Re: Building Emacs-cvs on Cygwin (GCC summary)

[Eric Hanchrow]

>>>>> "Eli" == Eli Zaretskii <eliz@gnu.org> writes:

    Eli> No, that's the wrong file: the problem is in the Cygwin
    Eli> build, which doesn't use any of the stuff in nt/.

You're right.

    Eli> The right place is etc/PROBLEMS.

This, however, I have doubts about: 3.4 appears to be what Cygwin
installs by default, so presumably this problem will hit most Cygwin
users.  I think if the note were in INSTALL, people would be more
likely to see it.

Regardless, I think the INSTALL file could be improved a smidgen, with
this change:

--- INSTALL	26 Jul 2006 19:19:06 -0700	1.115
+++ INSTALL	30 Oct 2006 13:25:59 -0800	
@@ -200,7 +200,7 @@
 
 DETAILED BUILDING AND INSTALLATION:
 
-(This is for a Unix or Unix-like system.  For MS-DOS and Windows 3.X,
+(This is for a Unix or Unix-like system, including Cygwin.  For MS-DOS and Windows 3.X,
 see below; search for MSDOG.  For Windows 9X, Windows ME, Windows NT,
 and Windows 2000, see the file nt/INSTALL.  For the Mac, see the file
 mac/INSTALL.)

-- 
Always code as if the guy who ends up maintaining your code will
be a violent psychopath who knows where you live.
        -- John F. Woods

Re: Building Emacs-cvs on Cygwin (GCC summary)

[Jason Rumney]

Eric Hanchrow wrote:
>     Richard> Let's document that people should not use GCC 3.4 on
>     Richard> Cygwin.  Where is the best place to document this?
>
> I vote for nt/INSTALL
>   

That is the wrong place for instructions for the Cygwin build. The 
Cygwin build does not use the windows specific files in the nt 
subdirectory, and people who know Cygwin would not expect it to, since 
Cygwin is not Windows, it is a POSIX emulation environment.

etc/PROBLEMS seems more appropriate.

Re: Building Emacs-cvs on Cygwin (GCC summary)

[Jari Aalto]

Jason Rumney <jasonr@gnu.org> writes:

> Eric Hanchrow wrote:
> >     Richard> Let's document that people should not use GCC 3.4 on
> >     Richard> Cygwin.  Where is the best place to document this?
> >
> > I vote for nt/INSTALL
> >
> 
> That is the wrong place for instructions for the Cygwin build. The
> Cygwin build does not use the windows specific files in the nt
> subdirectory, and people who know Cygwin would not expect it to, since
> Cygwin is not Windows, it is a POSIX emulation environment.
> 
> etc/PROBLEMS seems more appropriate.

Woudl it be possible to use OS specific file:

  etc/NOTES.Cygwin

Jari

Re: Building Emacs-cvs on Cygwin (GCC summary)

[Eli Zaretskii]

> From: Jari Aalto <jari.aalto@cante.net>
> Date: 05 Nov 2006 12:52:16 +0200
> > 
> > etc/PROBLEMS seems more appropriate.

In the meantime, I already added to PROBLEMS an entry about Cygwin
build with GCC 3.4.4.

> Woudl it be possible to use OS specific file:
> 
>   etc/NOTES.Cygwin

It's possible, but why would we want to do that?  There are at least
several good reasons not to:

 . System-specific files are a pain from the user's perspective, since
   the users need to be told where to find instructions relevant for
   their platform, and there's no good place to put these instructions
   (obviously, those instructions cannot be in a platform-specific
   files).  the etc/ directory is very large, so letting users look
   for the files on their own will make things hard on them

 . etc/PROBLEMS has an item in the Help menu, and searching it for
   "Cygwin" is trivial.  Many Emacs users already know about PROBLEMS
   and will look there when faced with a problem.

 . Cygwin build is, for all practical purposes, a Posix build, so
   users will probably assume that general Unix issues hold for it as
   well, and look for instructions and other build-related material in
   the general files, not in some OS-specific ones.

Re: Building Emacs-cvs on Cygwin (GCC summary)

[Eli Zaretskii]

> From: Richard Stallman <rms@gnu.org>
> Date: Mon, 30 Oct 2006 14:16:28 -0500
> Cc: emacs-devel@gnu.org
> 
>     > GCC-3.4.4-(1/2)                         Segment fault 
>     > 
>     > GCC-4.0.3                               OK 
>     > GCC-4.1.1                               OK 
>     > 
>     > GCC-4.2-20061024(prerelease)            M-x undefined 
>     > GCC-4.3-20061022(experim.)              M-x undefined 
>     > 
>     > 
>     > In conclusion on Cygwin only the build with GCC-4.0.3 and > 4.1.1 seem to 
>     > work fine. 
> 
> Let's document that people should not use GCC 3.4 on Cygwin.
> Where is the best place to document this?

I will document that in etc/PROBLEMS.

Re: Building Emacs-cvs on Cygwin (GCC summary)

[Eli Zaretskii]

> Date: Mon, 30 Oct 2006 23:06:04 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: maks.romih@t-2.net, emacs-devel@gnu.org
> 
> > From: Richard Stallman <rms@gnu.org>
> > Date: Mon, 30 Oct 2006 14:16:28 -0500
> > Cc: emacs-devel@gnu.org
> > 
> >     > GCC-3.4.4-(1/2)                         Segment fault 
> >     > 
> >     > GCC-4.0.3                               OK 
> >     > GCC-4.1.1                               OK 
> >     > 
> >     > GCC-4.2-20061024(prerelease)            M-x undefined 
> >     > GCC-4.3-20061022(experim.)              M-x undefined 
> >     > 
> >     > 
> >     > In conclusion on Cygwin only the build with GCC-4.0.3 and > 4.1.1 seem to 
> >     > work fine. 
> > 
> > Let's document that people should not use GCC 3.4 on Cygwin.
> > Where is the best place to document this?
> 
> I will document that in etc/PROBLEMS.

Done.

Re: 22.1 Cygwin emacs timeframe query

[Angelo Graziosi]

Joe Buehler wrote:

> I'm the maintainer for gnu emacs under Cygwin.


We are happy to hear that you are still the Cygwin mantainer of Emacs!

Have you recently 'frequented' the Cygwin lists ?

It is almost an year that Emacs is considered an 'orphaned' package!

(http://cygwin.com/ml/cygwin-apps/2005-10/msg00246.html,
http://sourceware.org/ml/cygwin-apps/2006-10/msg00017.html)



Cheers,

   Angelo. 

Re: 22.1 Cygwin emacs timeframe query

[Angelo Graziosi]

Joe Buehler wrote:

> I'm the maintainer for gnu emacs under Cygwin.


Have you tried to build Emacs from CVS?

What about this 

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

....

Finding pointers to doc strings...
Finding pointers to doc strings...done
Dumping under the name emacs
Static heap usage: 10779888 of 12582912 bytes
66931 pure bytes used
mv -f emacs.exe bootstrap-emacs.exe
make[2]: Leaving directory `/tmp/emacs/.build/src'
(cd lisp; make -w bootstrap EMACS=../src/bootstrap-emacs.exe)
make[2]: Entering directory `/tmp/emacs/.build/lisp'
wd=/tmp/emacs/lisp; subdirs=`(cd $wd; find . -type d -print)`; for file in
$subdirs; do case $file in */Old | */RCS | */CVS | */CVS/* | */.* | */.*/*
| */=* ) ;; *) wins="$wins $wd/$file" ;; esac; done; \
        for file in $wins; do \
           /tmp/emacs/lisp/../update-subdirs $file; \
        done;
wd=/tmp/emacs/lisp; subdirs=`(cd $wd; find . -type d -print)`; for file in
$subdirs; do case $file in */Old | */RCS | */CVS | */CVS/* | */.* | */.*/*
| */=* ) ;; *) wins="$wins $wd/$file" ;; esac; done; \
        echo Directories: $wins; \
        ../src/bootstrap-emacs.exe -batch --no-site-file --multibyte -l
autoload --eval '(setq generated-autoload-file
"/tmp/emacs/lisp/loaddefs.el")' -f batch-update-autoloads $wins
Directories: /tmp/emacs/lisp/. /tmp/emacs/lisp/./calc
/tmp/emacs/lisp/./calendar /tmp/emacs/lisp/./emacs-lisp
/tmp/emacs/lisp/./emulation /tmp/emacs/lisp/./erc /tmp/emacs/lisp/./eshell
/tmp/emacs/lisp/./gnus /tmp/emacs/lisp/./international
/tmp/emacs/lisp/./language /tmp/emacs/lisp/./mail /tmp/emacs/lisp/./mh-e
/tmp/emacs/lisp/./net /tmp/emacs/lisp/./obsolete /tmp/emacs/lisp/./play
/tmp/emacs/lisp/./progmodes /tmp/emacs/lisp/./term
/tmp/emacs/lisp/./textmodes /tmp/emacs/lisp/./url
Fatal error (6)/bin/sh: line 2:  3596 Aborted                 (core
dumped) ../src/bootstrap-emacs.exe -batch --no-site-file --multibyte -l
autoload --eval '(setq generated-autoload-file
"/tmp/emacs/lisp/loaddefs.el")' -f batch-update-autoloads $wins
make[2]: *** [autoloads] Error 134
make[2]: Leaving directory `/tmp/emacs/.build/lisp'
make[1]: *** [bootstrap-build] Error 2
make[1]: Leaving directory `/tmp/emacs/.build'
make: *** [bootstrap] Error 2 
--------------------------------------------------------------------


and similar failures that periodically come out in building under Cygwin?


Are your build  'stable' or 'segment fault's ? 

The builds with gcc-4.0.3 seem very stable, those with gcc-3.4.4-1 (the
only GCC in Cygwin) seem very 'unstable'. What is your results?


   Angelo.

Re: 22.1 Cygwin emacs timeframe query

[Angelo Graziosi]

Joe Buehler wrote:

> I'm the maintainer for gnu emacs under Cygwin.

If you are the mantainer, do you know the problems that have afflicted the
Emacs-21.2-13/21.3.50-2 users in the last year?

The main problem is that after a 'rebaseall' Emacs hangs. 

The workaround found was that after the rebase one should reinstall the
non rebased version of cygncurses7.dll of the libncurses7 package.

By the Cygwin mantainers it was suggested that the 'Emacs mantainer' had
to rebuild Emacs linking with the new libncurses (8), at least to verify
if this help.

In the meanwhile, why was it not released a CVS build of Emacs (at least
as exp. package, even if in Cygwin distribution there are package in
'curr' section that are taken from CVS, GDB e.g.)?


  Angelo.

Failures in build Emacs-CVS on Cygwin

[Angelo Graziosi]

Iwant to flag this for the sake of completeness.


After amost a month of succeful daily build of Emacs-CVS (with GCC-4.0.3
very stable) the build fail in this way:


-------------------------------------------------------------------
....
Generating autoloads for mh-utils.el...
Generating autoloads for mh-utils.el...done
Generating autoloads for mh-xface.el...
Generating autoloads for mh-xface.el...done
Saving file
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/mh-e/mh-loaddefs.el...
Wrote
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/mh-e/mh-loaddefs.el
find /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp -name
"*.elc" -print | xargs chmod +w >/dev/null 2>&1 || true; \

wd=/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp; subdirs=`(cd
$wd; find . -type d -print)`; for file in $subdirs; do case $file in */Old
| */RCS | */CVS | */CVS/* | */.* | */.*/* | */=* ) ;; *) wins="$wins
$wd/$file" ;; esac; done;	\
	els=`echo $wins | tr ' \011' '\012\012' | \
		sed -e 's|\(.\)$|\1/|' -e 's|^\./||' -e 's|$|*.el|'`;	\
	for el in
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/emacs-lisp/byte-opt.el
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/emacs-lisp/bytecomp.el
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/subr.el
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/progmodes/cc-mode.el
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/progmodes/cc-vars.el
$els; do \
	  if test -f $el; \
	  then \
	    echo Compiling $el; \

EMACSLOADPATH=/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp
../src/bootstrap-emacs.exe -batch --no-site-file --multibyte -f
batch-byte-compile-if-not-done $el || exit 1; \
	  fi \
	done
Compiling
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/emacs-lisp/byte-opt.el
Wrote
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/emacs-lisp/byte-opt.elc
Compiling
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/emacs-lisp/bytecomp.el

In end of data:
bytecomp.el:4204:1:Warning: the function `compilation-forget-errors' is
not
    known to be defined.
Wrote
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/emacs-lisp/bytecomp.elc
Compiling /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/subr.el
Fatal error (6)/bin/sh: line 4:  2196 Aborted                 (core
dumped) EMACSLOADPATH=/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp
../src/bootstrap-emacs.exe -batch --no-site-file --multibyte -f
batch-byte-compile-if-not-done $el
make[2]: *** [compile] Error 1
make[2]: Leaving directory
`/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/.build/lisp'
make[1]: *** [bootstrap-build] Error 2
make[1]: Leaving directory
`/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/.build'
make: *** [bootstrap] Error 2
 
-------------------------------------------------------------------

This kind of error, periodically, comes out under Cygwin.



Its structure is alway the same:

Fatal error (6)/bin/sh: line <...>:  <...> Aborted (core dumped)
EMACSLOADPATH=/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp
../src/bootstrap-emacs.exe -batch --no-site-file --multibyte -f
batch-byte-compile-if-not-done $<...>.



    Angelo.

Re: Failures in build Emacs-CVS on Cygwin

[Eli Zaretskii]

> Date: Wed, 22 Nov 2006 15:49:08 +0100 (MET)
> From: Angelo Graziosi <Angelo.Graziosi@roma1.infn.it>
> cc: Eli Zaretskii <eliz@gnu.org>
> 
> Wrote /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/emacs-lisp/bytecomp.elc
> Compiling /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/subr.el
> Fatal error (6)/bin/sh: line 4:  2196 Aborted                 (core dumped) EMACSLOADPATH=/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp

Does Cygwin GDB support core file (a.k.a. post-mortem) debugging?  If
so, could you please type "gdb bootstrap-emacs.exe core" (assuming the
core file's name is `core'), and see where it crashes with the "bt"
command?  Please run GDB from the src directory, to have it pick up
all the definitions in the .gdbinit file.

TIA

Re: Failures in build Emacs-CVS on Cygwin

[Angelo Graziosi]

On Thu, 23 Nov 2006, Eli Zaretskii wrote:

> > Date: Wed, 22 Nov 2006 15:49:08 +0100 (MET)
> > From: Angelo Graziosi <Angelo.Graziosi@roma1.infn.it>
> > cc: Eli Zaretskii <eliz@gnu.org>
> > 
> > Wrote /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/emacs-lisp/bytecomp.elc
> > Compiling /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/subr.el
> > Fatal error (6)/bin/sh: line 4:  2196 Aborted                 (core dumped) EMACSLOADPATH=/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp
> 
> Does Cygwin GDB support core file (a.k.a. post-mortem) debugging?  

I think NO: there is not a 'core' file. The failure creates a file in lisp
called 'bootstrap-emacs.exe.stackdump' which contains:

------------------------------------------------------------------
$ cat bootstrap-emacs.exe.stackdump 
Stack trace:
Frame     Function  Args
0022A868  7C802532  (000006D0, 0000EA60, 000000A4, 0022A8B0)
0022A988  6109745C  (00000000, 00000000, 00000000, 00000000)
0022AA78  61094FDB  (00000000, 003B0023, 00230000, 00000000)
0022AAD8  610954BB  (0022AAF0, 00000000, 00000094, 202EDC00)
0022AB98  61095672  (00000DB8, 00000006, 202DD801, 61017A53)
0022ABC8  61092AA8  (00000006, 60030000, 0022ACF8, 6109751C)
0022ACB8  61017B70  (000006D0, 0000EA60, 000000A4, 0022AD00)
0022ADD8  6109751C  (00000000, 0022AED8, 20C3B800, 6101BE4E)
0022AEC8  61094FDB  (00000000, 61167A20, 00000400, 61167A20)
0022AF28  610954BB  (0022AF40, 00000000, 00000094, 0022AF88)
0022AFE8  61095672  (00000DB8, 00000006, 0022B018, 20151730)
0022AFF8  61092AA8  (00000000, 20CB0000, 0022B018, 20CD3000)
0022B018  20151730  (20CC0950, 211D0970, 00001AC0, 202DE004)
0022B058  201521A8  (FFFDD000, 203C0003, 0022B108, 20122139)
0022B0B8  20150951  (00004000, 202DD801, 0022B0F8, 200F28E5)
0022B0C8  200F2E3C  (00004000, 203C001D, 0022D008, 0022B214)
End of stack trace (more stack frames may be present)
--------------------------------------------------------------



Trying your suggestion in any case, this is the result:

---------------------------------------------------------
$ gdb bootstrap-emacs.exe ../lisp/bootstrap-emacs.exe.stackdump 
GNU gdb 6.5.50.20060706-cvs (cygwin-special)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
details.
This GDB was configured as "i686-pc-cygwin"...
"/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/.build/src/../lisp/bootstrap-emacs.exe.stackdump" is
not a core dump: File format not recognized
DISPLAY = :0.0
TERM = xterm
Breakpoint 1 at 0x200a0b66: file
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/emacs.c, line 464.
Breakpoint 2 at 0x200ba689: file
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/sysdep.c, line
1385.
(gdb) bt
No stack.

Lisp Backtrace:
Cannot access memory at address 0x22c2f8 
---------------------------------------------------------


As you can see GDB says 'bootstrap-emacs.exe.stackdump is not a core
dump'!



  Angelo.



>If so, could you please type "gdb bootstrap-emacs.exe core" (assuming the
> core file's name is `core'), and see where it crashes with the "bt"
> command?  Please run GDB from the src directory, to have it pick up
> all the definitions in the .gdbinit file.
> 
> TIA
> 

Re: Failures in build Emacs-CVS on Cygwin

[Eli Zaretskii]

> Date: Thu, 23 Nov 2006 01:07:40 +0100 (MET)
> From: Angelo Graziosi <Angelo.Graziosi@roma1.infn.it>
> cc: emacs-devel@gnu.org, Joe Buehler <jbuehler@spirentcom.com>
> 
> On Thu, 23 Nov 2006, Eli Zaretskii wrote:
> 
> > > Date: Wed, 22 Nov 2006 15:49:08 +0100 (MET)
> > > From: Angelo Graziosi <Angelo.Graziosi@roma1.infn.it>
> > > cc: Eli Zaretskii <eliz@gnu.org>
> > > 
> > > Wrote /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/emacs-lisp/bytecomp.elc
> > > Compiling /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/subr.el
> > > Fatal error (6)/bin/sh: line 4:  2196 Aborted                 (core dumped) EMACSLOADPATH=/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp
> > 
> > Does Cygwin GDB support core file (a.k.a. post-mortem) debugging?  
> 
> I think NO: there is not a 'core' file. The failure creates a file in lisp
> called 'bootstrap-emacs.exe.stackdump' which contains:
> 
> ------------------------------------------------------------------
> $ cat bootstrap-emacs.exe.stackdump 
> Stack trace:
> Frame     Function  Args
> 0022A868  7C802532  (000006D0, 0000EA60, 000000A4, 0022A8B0)
> 0022A988  6109745C  (00000000, 00000000, 00000000, 00000000)
> 0022AA78  61094FDB  (00000000, 003B0023, 00230000, 00000000)
> 0022AAD8  610954BB  (0022AAF0, 00000000, 00000094, 202EDC00)
> 0022AB98  61095672  (00000DB8, 00000006, 202DD801, 61017A53)
> 0022ABC8  61092AA8  (00000006, 60030000, 0022ACF8, 6109751C)
> 0022ACB8  61017B70  (000006D0, 0000EA60, 000000A4, 0022AD00)
> 0022ADD8  6109751C  (00000000, 0022AED8, 20C3B800, 6101BE4E)
> 0022AEC8  61094FDB  (00000000, 61167A20, 00000400, 61167A20)
> 0022AF28  610954BB  (0022AF40, 00000000, 00000094, 0022AF88)
> 0022AFE8  61095672  (00000DB8, 00000006, 0022B018, 20151730)
> 0022AFF8  61092AA8  (00000000, 20CB0000, 0022B018, 20CD3000)
> 0022B018  20151730  (20CC0950, 211D0970, 00001AC0, 202DE004)
> 0022B058  201521A8  (FFFDD000, 203C0003, 0022B108, 20122139)
> 0022B0B8  20150951  (00004000, 202DD801, 0022B0F8, 200F28E5)
> 0022B0C8  200F2E3C  (00004000, 203C001D, 0022D008, 0022B214)
> End of stack trace (more stack frames may be present)
> --------------------------------------------------------------

Please ask Cygwin experts how to produce human-readable backtrace
information from this stackdump.  There must be some utility in the
Cygwin collection to do that.

Maybe Cygwin also has a way of producing a real core file, in which
case please try using it to investigate these crashes.

TIA

Re: Failures in build Emacs-CVS on Cygwin

[Angelo Graziosi]

I have asked and Cygwin suggests this:

http://cygwin.com/ml/cygwin/2006-11/msg00599.html
http://cygwin.com/ml/cygwin/2006-11/msg00600.html

I will try to understand deeply these suggestions to see how they work.

While waiting for the above answers I downloaded new CVS (which differ
very little from the previous), and now the build fails at the end of
installation, i.e. after the bootstrap!

---------------------------------------------------
...
ja-dic/CVS/Template
ja-dic/ja-dic.el
ja-dic/ja-dic.elc
unset CDPATH; \
	if [ -n "/usr/bin/gzip" ]; \
	then \
	   echo "Compressing *.el ..." ; \
	   (cd
/tmp/emacs/.inst/usr/local/emacs-cvs/share/emacs/22.0.91/leim; for f in
`find . -name "*.elc" -print`; do \
		/usr/bin/gzip -9n `echo $f|sed 's/.elc$/.el/'` ; \
	    done) \
	else true; fi
Compressing *.el ...
chmod -R a+r /tmp/emacs/.inst/usr/local/emacs-cvs/share/emacs/22.0.91/leim
make[1]: Leaving directory `/tmp/emacs/.build/leim'
cd lib-src; make maybe-blessmail  \
	  MAKE='make'
archlibdir='/tmp/emacs/.inst/usr/local/emacs-cvs/libexec/emacs/22.0.91/i686-pc-cygwin'
make[1]: Entering directory `/tmp/emacs/.build/lib-src'
../src/emacs -batch -l /tmp/emacs/lib-src/../lisp/mail/blessmail.el
Fatal error (6)make[1]: *** [blessmail] Aborted (core dumped)
make[1]: Leaving directory `/tmp/emacs/.build/lib-src'
make: *** [blessmail] Error 2 
---------------------------------------------------


When all works fine, the build is completed in this way
------------------------------------------------------
...
cd lib-src; make maybe-blessmail  \
          MAKE='make'
archlibdir='/home/Angelo/Downloads/cygwin_varie/emacs-cvs/
emacs/.inst/usr/local/emacs-cvs/libexec/emacs/22.0.90/i686-pc-cygwin'
make[1]: Entering directory
`/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs
/.build/lib-src'
../src/emacs -batch -l
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lib-s
rc/../lisp/mail/blessmail.el
Wrote
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/.build/lib-src/blessma
il
chmod +x blessmail
Assuming /usr/spool/mail is really the mail spool directory, you should
run lib-src/blessmail
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/.inst/
usr/local/emacs-cvs/libexec/emacs/22.0.90/i686-pc-cygwin/movemail.exe
as root, to give movemail.exe appropriate permissions.
Do that after running make install.
make[1]: Leaving directory
`/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/
.build/lib-src'

Making the binary package...

===========================================
 THE BUILD FINISHES AT 2006.11.18-15:12:52
===========================================
------------------------------------------------------




Cheers,

    Angelo.

 
On Thu, 23 Nov 2006, Eli Zaretskii wrote:

> > Date: Thu, 23 Nov 2006 01:07:40 +0100 (MET)
> > From: Angelo Graziosi <Angelo.Graziosi@roma1.infn.it>
> > cc: emacs-devel@gnu.org, Joe Buehler <jbuehler@spirentcom.com>
> > 
> > On Thu, 23 Nov 2006, Eli Zaretskii wrote:
> > 
> > > > Date: Wed, 22 Nov 2006 15:49:08 +0100 (MET)
> > > > From: Angelo Graziosi <Angelo.Graziosi@roma1.infn.it>
> > > > cc: Eli Zaretskii <eliz@gnu.org>
> > > > 
> > > > Wrote /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/emacs-lisp/bytecomp.elc
> > > > Compiling /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp/subr.el
> > > > Fatal error (6)/bin/sh: line 4:  2196 Aborted                 (core dumped) EMACSLOADPATH=/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/lisp
> > > 
> > > Does Cygwin GDB support core file (a.k.a. post-mortem) debugging?  
> > 
> > I think NO: there is not a 'core' file. The failure creates a file in lisp
> > called 'bootstrap-emacs.exe.stackdump' which contains:
> > 
> > ------------------------------------------------------------------
> > $ cat bootstrap-emacs.exe.stackdump 
> > Stack trace:
> > Frame     Function  Args
> > 0022A868  7C802532  (000006D0, 0000EA60, 000000A4, 0022A8B0)
> > 0022A988  6109745C  (00000000, 00000000, 00000000, 00000000)
> > 0022AA78  61094FDB  (00000000, 003B0023, 00230000, 00000000)
> > 0022AAD8  610954BB  (0022AAF0, 00000000, 00000094, 202EDC00)
> > 0022AB98  61095672  (00000DB8, 00000006, 202DD801, 61017A53)
> > 0022ABC8  61092AA8  (00000006, 60030000, 0022ACF8, 6109751C)
> > 0022ACB8  61017B70  (000006D0, 0000EA60, 000000A4, 0022AD00)
> > 0022ADD8  6109751C  (00000000, 0022AED8, 20C3B800, 6101BE4E)
> > 0022AEC8  61094FDB  (00000000, 61167A20, 00000400, 61167A20)
> > 0022AF28  610954BB  (0022AF40, 00000000, 00000094, 0022AF88)
> > 0022AFE8  61095672  (00000DB8, 00000006, 0022B018, 20151730)
> > 0022AFF8  61092AA8  (00000000, 20CB0000, 0022B018, 20CD3000)
> > 0022B018  20151730  (20CC0950, 211D0970, 00001AC0, 202DE004)
> > 0022B058  201521A8  (FFFDD000, 203C0003, 0022B108, 20122139)
> > 0022B0B8  20150951  (00004000, 202DD801, 0022B0F8, 200F28E5)
> > 0022B0C8  200F2E3C  (00004000, 203C001D, 0022D008, 0022B214)
> > End of stack trace (more stack frames may be present)
> > --------------------------------------------------------------
> 
> Please ask Cygwin experts how to produce human-readable backtrace
> information from this stackdump.  There must be some utility in the
> Cygwin collection to do that.
> 
> Maybe Cygwin also has a way of producing a real core file, in which
> case please try using it to investigate these crashes.
> 
> TIA
> 

Re: Failures in build Emacs-CVS on Cygwin

[Angelo Graziosi]

On Thu, 23 Nov 2006, Eli Zaretskii wrote:

> Maybe Cygwin also has a way of producing a real core file, in which
> case please try using it to investigate these crashes.
> 

Configuring the CYGWIN env. variable, when bootstrapping, it creates
lisp/bootstrap-emacs.exe.core, so I have tried the following (I am not a
very expert of GDB)

Using 'run' under GDB, it hangs and I must kill it:
---------------------------------------------------------------
$ gdb ./bootstrap-emacs.exe ../lisp/bootstrap-emacs.exe.core 
GNU gdb 6.5.50.20060706-cvs (cygwin-special)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
details.
This GDB was configured as "i686-pc-cygwin"...

warning: core file may not match specified executable file.

warning: Couldn't find general-purpose registers in core file.

warning: Couldn't find general-purpose registers in core file.
#0  0x00000000 in ?? ()
DISPLAY = :0.0
TERM = xterm
Breakpoint 1 at 0x200a0b66: file
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/emacs.c, line 464.
Breakpoint 2 at 0x200ba689: file
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/sysdep.c, line
1385.
(gdb) run
Starting
program: /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/.build/src/bootstrap-emacs.exe
-geometry 80x40+0+0
Loaded symbols for /c/WINDOWS/system32/ntdll.dll
Loaded symbols for /c/WINDOWS/system32/kernel32.dll
Loaded symbols for /usr/X11R6/bin/cygICE-6.dll
Loaded symbols for /usr/bin/cygwin1.dll
Loaded symbols for /c/WINDOWS/system32/advapi32.dll
Loaded symbols for /c/WINDOWS/system32/rpcrt4.dll
Loaded symbols for /usr/X11R6/bin/cygSM-6.dll
Loaded symbols for /usr/X11R6/bin/cygX11-6.dll
Loaded symbols for /usr/X11R6/bin/cygXaw3d-7.dll
Loaded symbols for /usr/X11R6/bin/cygXext-6.dll
Loaded symbols for /usr/X11R6/bin/cygXmu-6.dll
Loaded symbols for /usr/X11R6/bin/cygXt-6.dll
Loaded symbols for /usr/X11R6/bin/cygXpm-4.dll
Loaded symbols for /usr/bin/cygncurses-8.dll
Loaded symbols for /usr/bin/cygjpeg-62.dll
Loaded symbols for /usr/bin/cygpng12.dll
Loaded symbols for /usr/bin/cygz.dll
Loaded symbols for /usr/bin/cygtiff-5.dll
Loaded symbols for /usr/bin/cygungif-4.dll
warning: NOD32 protected [MSAFD Tcpip [TCP/IP]]
warning: NOD32 protected [MSAFD Tcpip [UDP/IP]]
warning: NOD32 protected [MSAFD Tcpip [RAW/IP]]
warning: NOD32 protected [RSVP UDP Service Provider]
warning: NOD32 protected [RSVP TCP Service Provider]


   ***** HERE IT HANGS ! ******


Program received signal SIGSEGV, Segmentation fault.
---Type <return> to continue, or q <return> to quit---[2]+  Killed
gdb ./bootstrap-emacs.exe ../lisp/bootstrap-emacs.exe.core
Killed 
---------------------------------------------------------------



Using 'start', 'bt' and 'c' in GDB (after 'c' it hangs as above):
----------------------------------------------------------
$ gdb ./bootstrap-emacs.exe ../lisp/bootstrap-emacs.exe.core 
GNU gdb 6.5.50.20060706-cvs (cygwin-special)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
details.
This GDB was configured as "i686-pc-cygwin"...

warning: core file may not match specified executable file.

warning: Couldn't find general-purpose registers in core file.

warning: Couldn't find general-purpose registers in core file.
#0  0x00000000 in ?? ()
DISPLAY = :0.0
TERM = xterm
Breakpoint 1 at 0x200a0b66: file
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/emacs.c, line 464.
Breakpoint 2 at 0x200ba689: file
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/sysdep.c, line
1385.
(gdb) start
Breakpoint 3 at 0x200a1a4e: file
/home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/emacs.c, line 837.
Starting
program: /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/.build/src/bootstrap-emacs.exe
-geometry 80x40+0+0
Loaded symbols for /c/WINDOWS/system32/ntdll.dll
Loaded symbols for /c/WINDOWS/system32/kernel32.dll
Loaded symbols for /usr/X11R6/bin/cygICE-6.dll
Loaded symbols for /usr/bin/cygwin1.dll
Loaded symbols for /c/WINDOWS/system32/advapi32.dll
Loaded symbols for /c/WINDOWS/system32/rpcrt4.dll
Loaded symbols for /usr/X11R6/bin/cygSM-6.dll
Loaded symbols for /usr/X11R6/bin/cygX11-6.dll
Loaded symbols for /usr/X11R6/bin/cygXaw3d-7.dll
Loaded symbols for /usr/X11R6/bin/cygXext-6.dll
Loaded symbols for /usr/X11R6/bin/cygXmu-6.dll
Loaded symbols for /usr/X11R6/bin/cygXt-6.dll
Loaded symbols for /usr/X11R6/bin/cygXpm-4.dll
Loaded symbols for /usr/bin/cygncurses-8.dll
Loaded symbols for /usr/bin/cygjpeg-62.dll
Loaded symbols for /usr/bin/cygpng12.dll
Loaded symbols for /usr/bin/cygz.dll
Loaded symbols for /usr/bin/cygtiff-5.dll
Loaded symbols for /usr/bin/cygungif-4.dll
main (argc=3, argv=0x202d3040)
    at /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/emacs.c:837
837	{
(gdb) bt
#0  main (argc=3, argv=0x202d3040)
    at /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/emacs.c:837

Lisp Backtrace:
0 (0x909090c3)
Cannot access memory at address 0x78746344
(gdb) q
The program is running.  Exit anyway? (y or n) n
Not confirmed.
(gdb) c
Continuing.
warning: NOD32 protected [MSAFD Tcpip [TCP/IP]]
warning: NOD32 protected [MSAFD Tcpip [UDP/IP]]
warning: NOD32 protected [MSAFD Tcpip [RAW/IP]]
warning: NOD32 protected [RSVP UDP Service Provider]
warning: NOD32 protected [RSVP TCP Service Provider]

Program received signal SIGSEGV, Segmentation fault.
[Switching to thread 3136.0xc94]
0x00000000 in ?? ()
(gdb) Killed
 
----------------------------------------------------------


The results do not look very encouraging!


  Angelo.

Re: Failures in build Emacs-CVS on Cygwin

[Eli Zaretskii]

> Date: Fri, 24 Nov 2006 00:55:10 +0100 (MET)
> From: Angelo Graziosi <Angelo.Graziosi@roma1.infn.it>
> cc: emacs-devel@gnu.org, jbuehler@spirentcom.com
> 
> Configuring the CYGWIN env. variable, when bootstrapping, it creates
> lisp/bootstrap-emacs.exe.core, so I have tried the following (I am not a
> very expert of GDB)
> 
> Using 'run' under GDB, it hangs and I must kill it:
> ---------------------------------------------------------------
> $ gdb ./bootstrap-emacs.exe ../lisp/bootstrap-emacs.exe.core 
> GNU gdb 6.5.50.20060706-cvs (cygwin-special)
> Copyright (C) 2006 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you
> are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for
> details.
> This GDB was configured as "i686-pc-cygwin"...
> 
> warning: core file may not match specified executable file.
> 
> warning: Couldn't find general-purpose registers in core file.
> 
> warning: Couldn't find general-purpose registers in core file.

These 3 messages aren't a good sign.

> #0  0x00000000 in ?? ()
> DISPLAY = :0.0
> TERM = xterm
> Breakpoint 1 at 0x200a0b66: file
> /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/emacs.c, line 464.
> Breakpoint 2 at 0x200ba689: file
> /home/Angelo/Downloads/cygwin_varie/emacs-cvs/emacs/src/sysdep.c, line
> 1385.
> (gdb) run

No, you shouldn't run the program.  You are debugging a core file,
which is an image of a dead program.  Such a program cannot be run.
You can only examine the variables and memory.  So the right command
is "bt".

Re: Failures in build Emacs-CVS on Cygwin

[Angelo Graziosi]

On Fri, 24 Nov 2006, Eli Zaretskii wrote:

> > (gdb) run
> 
> No, you shouldn't run the program.  You are debugging a core file,
> which is an image of a dead program.  Such a program cannot be run.
> You can only examine the variables and memory.  So the right command
> is "bt".
> 

I tried it, first, but I obtained only a "Cannot access memory at
address...", so I tried the others.

Meanwhile I have continued to build new CVS and now the build is completed
successfully!

The mystery is that also with previous CVS the problems cannot be
reproduced any more! This is what happens on Cygwin! On GNU/Linux I have
not found obstacles in build Emacs-CVS.



Thanks for your recent post on Cygwin lists.

   
   Angelo.

Re: Failures in build Emacs-CVS on Cygwin

[Eli Zaretskii]

> Date: Sat, 25 Nov 2006 00:32:42 +0100 (MET)
> From: Angelo Graziosi <Angelo.Graziosi@roma1.infn.it>
> cc: emacs-devel@gnu.org
> 
> Thanks for your recent post on Cygwin lists.

I just couldn't stand anymore the kind of unfriendly replies that are
evidently a norm on that list.

Re: Failures in build Emacs-CVS on Cygwin

[Angelo Graziosi]

I post this only for the sake of completeness.


When the build fails as described
here: http://lists.gnu.org/archive/html/emacs-devel/2006-11/msg01214.html,
having activated the dumper.exe so that a core file is produced the
results are the following.

At the end of installation the build fails in this way:
-----------------------------------------------------------
...
ja-dic/CVS/Template
ja-dic/ja-dic.el
ja-dic/ja-dic.elc
unset CDPATH; \
        if [ -n "/usr/bin/gzip" ]; \
        then \
           echo "Compressing *.el ..." ; \
           (cd
/tmp/emacs/.inst/usr/local/emacs-cvs/share/emacs/22.0.91/leim; fo
r f in `find . -name "*.elc" -print`; do \
                /usr/bin/gzip -9n `echo $f|sed 's/.elc$/.el/'` ; \
            done) \
        else true; fi
Compressing *.el ...
chmod -R a+r /tmp/emacs/.inst/usr/local/emacs-cvs/share/emacs/22.0.91/leim
make[1]: Leaving directory `/tmp/emacs/.build/leim'
cd lib-src; make maybe-blessmail  \
          MAKE='make'
archlibdir='/tmp/emacs/.inst/usr/local/emacs-cvs/libexec/e
macs/22.0.91/i686-pc-cygwin'
make[1]: Entering directory `/tmp/emacs/.build/lib-src'
../src/emacs -batch -l /tmp/emacs/lib-src/../lisp/mail/blessmail.el
Fatal error (6)*** starting debugger for pid 740, tid 2388
*** continuing pid 740 from debugger call (1)
make[1]: *** [blessmail] Aborted (core dumped)
make[1]: Leaving directory `/tmp/emacs/.build/lib-src'
make: *** [blessmail] Error 2
-----------------------------------------------------------

this creates a emacs.exe.core file of about 20MB.

Using GDB:
------------------------------------------------------------
/tmp/emacs/.build/src
$ gdb ./emacs.exe ../lib-src/emacs.exe.core
GNU gdb 6.5.50.20060706-cvs (cygwin-special)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
details.
This GDB was configured as "i686-pc-cygwin"...

warning: core file may not match specified executable file.

warning: Couldn't find general-purpose registers in core file.

warning: Couldn't find general-purpose registers in core file.
#0  0x00000000 in ?? ()
Environment variable "DISPLAY" not defined.
TERM = cygwin
Breakpoint 1 at 0x200a0b66: file /tmp/emacs/src/emacs.c, line 464.
Breakpoint 2 at 0x200ba689: file /tmp/emacs/src/sysdep.c, line 1385.
(gdb) bt
#0  0x00000000 in ?? ()

Lisp Backtrace:
Cannot access memory at address 0x22c2f8
(gdb)

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



Using the suggestion http://cygwin.com/ml/cygwin/2006-11/msg00657.html
------------------------------------------------------------------------
/tmp/emacs/.build/lib-src
$ awk '/^[0-9]/{print $2}' emacs.exe.stackdump | addr2line -f -e
../src/emacs.exe > /tmp/out

/tmp
cat out
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
??
??:0
relinquish
/tmp/emacs/src/ralloc.c:338
r_alloc_sbrk
/tmp/emacs/src/ralloc.c:934
_malloc_internal
/tmp/emacs/src/gmalloc.c:504
emacs_blocked_malloc
/tmp/emacs/src/alloc.c:1244
------------------------------------------------------------------------


Cheers,

   Angelo.

Re: Failures in build Emacs-CVS on Cygwin

[Eli Zaretskii]

> Date: Sat, 25 Nov 2006 10:52:42 +0100 (MET)
> From: Angelo Graziosi <Angelo.Graziosi@roma1.infn.it>
> cc: emacs-devel@gnu.org, jbuehler@spirentcom.com
> 
> relinquish
> /tmp/emacs/src/ralloc.c:338
> r_alloc_sbrk
> /tmp/emacs/src/ralloc.c:934
> _malloc_internal
> /tmp/emacs/src/gmalloc.c:504
> emacs_blocked_malloc
> /tmp/emacs/src/alloc.c:1244

Looks like some problem with memory allocation.  Several similar
crashes of the Cygwin port were reported during the last months, IIRC.

22.1 Cygwin emacs timeframe query

[Joe Buehler]

I'm the maintainer for gnu emacs under Cygwin.  Given the "release" of
the 22.0.90 alpha, is there a timeframe for the final release?  I would
like to know how much time I have to get patches in before release of
22.1 (or whatever it will be).  I would like the official Cygwin version
when available to not require any Cygwin-private patches.

-- 
Joe Buehler

Re: 22.1 Cygwin emacs timeframe query

[Eli Zaretskii]

> From: Joe Buehler <jbuehler@spirentcom.com>
> Date: Mon, 20 Nov 2006 08:46:34 -0500
> 
> I'm the maintainer for gnu emacs under Cygwin.

It's good to know there is a Cygwin maintainer.  Thanks for working on
the Cygwin port.

> Given the "release" of the 22.0.90 alpha

Actually, 22.0.91 was released yesterday.

> is there a timeframe for the final release?  I would
> like to know how much time I have to get patches in before release of
> 22.1 (or whatever it will be).  I would like the official Cygwin version
> when available to not require any Cygwin-private patches.

I don't think anyone has any clear idea where Emacs 22.1 will be out,
unless you will accept "soon" as an answer.

However, no matter when the release will happen, now is the time to
submit patches for it to compile and run on Cygwin.

Btw, I hope you are aware of quite a few problems reported here and on
emacs-pretest-bug that are specific to the Cygwin build.  If not,
please try to read them and resolve them, either by patches or by
suggesting entries in etc/PROBLEMS.

TIA