>>  >> If you really prefer to support pkgsrc on "coherent" platforms
 >>  >> only, modify pkgsrc guide section 3.3.5 and mention that DASH
 >>  >> is NOT compatible with pkgsrc version of libtool.
 >> 
 >> > It is nothing specific to libtool. The shown behaviour simply indicates
 >> > that dash is not a POSIX compatible shell. 
 >> 
 >> > To quote SUS v3:
 >> 
 >> > 2.2.3 Double-Quotes
 >> 
 >> The problem is not with "-quoting but with builtin echo, I think.

> Well, continue reading. Either the shell or the echo builtin is
> expanding \1 incorrectly. echo is not supposed to expand anything,
> so it has to be the shell.
shell's builtin echo

> In either case, it is a major violation
> of SUS.
true :)

So, I consider that P is already R'ed ;)

-- 
Best regards, Aleksey Cheusov.