Subject: Re: rename or copy cygwin1.dll to cygwinb19.dll
From: [email-masked] (Corinna Vinschen)

9 Nov 1998 04:34:13 -0800
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To: [email-masked], [email-masked], [email-masked]

Earnie Boyd wrote:
> 
> [email-masked] wrote:
> >
> > The install instructions say:
> >
> > This version of Cygwin is backwards-compatible with the beta 19
> release. If
> > you rename the cygwin1.dll included as part of B20 to
> "cygwinb19.dll", the
>
> [...]
>
> Yes, it should have been copy.  However, if you execute a program such
> as the gdb from b19 that calls a cygwin build dll and it gets the one
> with cygwin1.dll then you will crash with a core file as the two can't
>
> [...]

There's another, a little bit `brutal' method:

Take your favorite hex editor, open the b19 executable, you wish to
`transform' to a b20 exe, search for `cygwinb19.dll', change it to
`cygwin1.dll', followed by two ASCII-NUL (the file length may not be
changed!) and save it and ... yes, start it!

I have tested it with different b19 progs. It does the appropriate. 

This leads to only one cygwin1.dll. The copy to `cygwinb19.dll'
is unnecessery.

Regards,
Corinna
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