Re: generated configure script doesn't work when "diff" isn't available

[Ralf Wildenhues]

* Ralf Wildenhues wrote on Fri, Mar 21, 2008 at 01:41:10AM CET:
> 
> I don't like that this adds four forks to every configure invocation
> but that's only a side issue.

Also, I guess, instead of diffing the huge configure (or testsuite)
script ...

> +m4_defun([_AS_DIFF_PREPARE],
> +[if (diff $as_myself $as_myself) >/dev/null 2>&1; then

... this should probably generate an empty file and diff that to itself
(and clean up afterwards).

Cheers,
Ralf