Re: Bootstrap failure using 'make -j4' [Cygwin]

["Jan Djärv" <jan.h.d@swipnet.se>]

David Engster skrev 2010-05-22 15.06:
> Jan Djärv writes:
>> Eli Zaretskii skrev 2010-05-22 14.46:
>>>> Date: Sat, 22 May 2010 13:00:53 +0200
>>>> From: Jan Djärv<jan.h.d@swipnet.se>
>>>> CC: Angelo Graziosi<angelo.graziosi@alice.it>, emacs-devel@gnu.org
>>>>
>>>> A better solution is probably to replace
>>>>
>>>>          test -d ${DEPDIR} || mkdir ${DEPDIR}
>>>>
>>>> with
>>>>
>>>>          mkdir -p ${DEPDIR}
>>>
>>> I think the -p switch to mkdir is not portable.
>>>
>>
>> I has been in The Single UNIX ® Specification since 1997 at least.  I
>> think it was in POSIX 2 as well (1990), but I lost it, so I can't
>> check.
>
> That may be, but 'mkdir -p' is not guaranteed to be thread-safe.

That has nothing to do with this situation.  The point of -p here is that 
mkdir shall not output an error if the directory exist.  When creating 
multiple directories, then -p is not thread safe (i.e. two mkdir:s may be 
creating directories in the tree), but this is not the case here.

	Jan D.