Re: Use "$(MKDIR_P) sys", not race-prone "test -d sys || mkdir sys".

[Bruno Haible]

James Youngman wrote:
> The following patch fixes the problem.  I'm not sure if it is
> the *right* fix for the problem, since I have only been working with
> Autoconf/Automake macros for ten years, and so I don't understand it
> well enough yet.
> 
> 2007-01-22  James Youngman  <address@hidden>
> 
>         * m4/gnulib-common.m4 (AC_PROG_MKDIR_P): If AC_PROG_MKDIR_P
>         is already provided, call AC_SUBST on MKDIR_P anyway, since
>         the version of AC_PROG_MKDIR_P in Autoconf-2.61 (at least)
>         doesn't do that.

Yes, this appears right. I'll give it more thorough testing tomorrow,
but for now I've applied your patch (with different comments only). Thanks.

Bruno