Re: Cygwin (time ...) always reports 0.0 run-time/gc-time

[Peter B. <cl...@pe...>]

Sam Steingold <sd...@gn...> writes:

> > * In message <wk6...@pe...>
> > * On the subject of "Cygwin (time ...) always reports 0.0 run-time/gc-time"
> > * Sent on 13 Apr 2002 23:09:55 +0100
> > * Honorable Peter Burwood <cl...@pe...> writes:
> >
> > Cygwin provides sys/resource.h and declares getrusage(), but getrusage()
> > only works on WinNT. Actually, I'm not sure about WinXP or Win2000.
> 
> any chance you could figure that out?
      
Cygwin getrusage uses GetProcessTimes. This is document in MSDN as

  Windows NT/2000/XP: Included in Windows NT 3.5 and later.
  Windows 95/98/Me: Unsupported.

I've had no response on the cygwin mailing lists. I might send them a patch
to make it set ENOSYS for unsupported version of Windows.

> > BTW, running makefile.devel configures now reports the following for each
> > configure file. This is newish, certainly since I last had to rebuild the
> > configure files about a month ago. Any ideas?
> > 
> > $ cd src ; autoconf/autoconf -A autoconf -l autoconf
> > NONE:0: /usr/bin/m4: `m4_symbols' from frozen file not found in builtin table!
> > NONE:0: /usr/bin/m4: `syncoutput' from frozen file not found in builtin table!
> > NONE:0: /usr/bin/m4: `changesyntax' from frozen file not found in builtin table!
> > 
> > $ m4 --version
> > GNU m4 1.4
> 
> I think you upgraded your autoconf during this time.
> I have seen these messages but observed no detrimental effects.
> It would be nice if you could investigate further.

A message on libtool mailing list has this response to those messages...

"You built Autoconf with m4-1.4o, which generated frozen files
 (basically a state dump of M4's memory to speed up macro loading)
 dependant on the m4-1.4o symbols.  You then downgraded to m4-1.4 which
 is missing the functions behind the additional symbols added between
 1.4 and 1.4o.

 If you rebuild Autoconf with m4-1.4, and reinstall, these errors will
 vanish...
"

Since I use a pre-built autoconf from Cygwin, then the Cygwin developers
must have done this.

Peter