Re: cygwin: need to use the correct 'head.exe'

[Charles Wilson]

Okay, okay, uncle!! <g>

I'll resubmit a (very) simple patch to change the use of 'head -n 10' 
within win32_libid() to '$SED 10q' or some variant thereof.

Alexandre Duret-Lutz wrote:
> > > > "Bob" == Bob Friesenhahn <address@hidden> writes:
>
>
> [...]
>
>  Bob> I also believe it is worth investigating to see if using 'sed' is
>  Bob> acceptable.  It seems that the targets which execute win32_libid() are
>  Bob> highly constrained 

Not entirely so.  You'd use the *build* platform's head or sed, even 
though the host/target platform is "highly constrained".  But, if sed 
will do the job, I'm happy.

so some simple testing will verify if sed is a
>  Bob> reasonable substitute for those targets.
>
>  Bob> Adding more tests to the configure script makes it larger and slower,
>  Bob> which likely nullifies any benefits from using head.
>
> FWIW, Automake removed all uses of `head' and `tail' last year.
>
> 2002-02-18  Paul Eggert  <address@hidden>
>
>         * lib/depcomp: Don't use "tail +3"; it's not portable to
>         POSIX 1003.1-2001 hosts.
>
> 2002-02-18  Jim Meyering  <address@hidden>
>
>         * tests/cond12.test: Use sed 1q, not `head -n 1'.
>         The latter is not portable to some old systems.
>         * m4/depout.m4: Don't use `head -1'; it's no longer portable.
>         Use `sed 1q' instead.
>         * tests/insthook.test: Likewise.