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From:	Juan Manuel Guerrero <juan DOT guerrero AT gmx DOT de>
Newsgroups:	comp.lang.perl.misc,comp.os.msdos.djgpp
Subject:	Re: Perldoc error: "Could not create temp file"
Date:	Fri, 18 Apr 2008 06:12:40 -0700 (PDT)
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OFYI:
The error reported can not be reproduced by me on the
systems that are available to me.

The perl 5.8.8 port works flawlessly on the following
operating systems:
1) MSDOS 6.22 (SFN)
2) Win98SE (SFN)
3) Win98SE (LFN)
4) WinXP (home) SP2 (LFN)

It fails and will continue to failing in the future
because I have no intentions to fix it:
1) WinXP (home) SP2 (SFN)

The reason for this failure is that AFAIK there is
no way to inhibit the generation of numeric tails
for short file names.  This means that a long file
name like this:
  longfilename.extension
has a short file name alias that looks like this:
  longfi~1.ext
and this will not be found by perl or any other djgpp
program.  On Win98 there is always the possibility to
disable the numeric tail generation so that:
  longfilename.extension
is cleanly truncated to 8.3 and becomes:
  longfile.ext
The OS will truncated in this way the long file name
passed by the application (perl) and looks for the file
with the truncated name and will find it.
If the long file name is not truncated in this way to the
8.3 length but changed by the OS like this
  longfi~1.ext
the application will never find the file.
To be able to run djgpp applications with an OS that
generates numeric tails for the SFN aliases almost the
complete stdio of the application must be replaced and
I have not the time to do that.
IMHO there is no reason to use SFN where LFN support is
available.
In conclusion; *no one* of the ports I have produced is
able to run in SFN environments that use numeric tails.
I have never added djgpp specific code that is able to
handle SFN with numeric tails and that is started if
the file can not be found using the long file name.


Anyway all this does not explain the failure that has been
reported.  On my WinXP box I have set LFN=n in djgpp.env
and started bash.  I started the command:
  perldoc perl
and got the following output:


perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LC_ALL = (unset),
	LANG = "de"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
Can't locate File/Spec/Functions.pm in @INC (@INC contains: /dev/env/
DJDIR/lib/perl5 /dev/env/DJDIR/lib/perl5/site /dev/env/DJDIR/lib/perl5/
site /dev/env/DJDIR/lib/perl5/site .) at /dev/env/DJDIR/lib/perl5/Pod/
Perldoc.pm line 10.
BEGIN failed--compilation aborted at /dev/env/DJDIR/lib/perl5/Pod/
Perldoc.pm line 10.
Compilation failed in require at c:/djgpp/bin/perldoc line 9.
BEGIN failed--compilation aborted at c:/djgpp/bin/perldoc line 9.


The application fails before it reaches the point where the
temporary file is created.  The applications is not even
capable to start because it can not load the required
modules.  This is due the numeric tails in the file and
directory names.

Regards,
Juan M. Guerrero

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