RE: Gmake.exe error: process_easy: DuplicateHandle(In) failed (e=6)

[Tom Kronmiller]

At the time, we thought this was a cygwin or a perl issue, rather than
a GNUmake issue.  Take a look at
   http://sources.redhat.com/ml/cygwin/2005-05/msg01265.html
or google "DuplicateHandle Nathan Mullen" if that doesn't work.  That
thread has the minimum case we were able to construct by extracting
the DuplicateHandle code from gmake.



--
Tom Kronmiller, address@hidden, 919-321-0625
  

> -----Original Message-----
> From: Eli Zaretskii [mailto:address@hidden 
> Sent: Friday, December 02, 2005 6:39 AM
> To: Tom Kronmiller
> Cc: address@hidden; address@hidden
> Subject: Re: Gmake.exe error: process_easy: 
> DuplicateHandle(In) failed (e=6)
> 
> > From: "Tom Kronmiller" <address@hidden>
> > Date: Thu, 1 Dec 2005 16:29:44 -0500
> > Cc: 
> > 
> > A while ago I was having this exact symptom in a similar 
> context: on windows, running gmake through a perl-based 
> wrapper script.
> > Ultimately it turned out (and I have no idea why) that when 
> the perl script included a back-tick command
> >     $x = `some command`;
> >     ....
> >     system("gmake ....");
> > then the problem would manifest, but not if the backtick 
> was disabled by something like
> >     system("some command > tmpfile");
> >     open(file "< tmpfile"); read, ... into $x;
> >     ...
> >     system("gmake ....");
> 
> It sounds like something is wrong with redirecting a standard handle,
> but I need help to understand the details: what handle is the
> offending one and why.  Can you try debugging this?