Re: Parallel build failure on OSX

[christos%astron.com@localhost (Christos Zoulas)]

In article <20150109124329.GC14961%trav.math.uni-bonn.de@localhost>,
Edgar Fuß  <ef%math.uni-bonn.de@localhost> wrote:
>> Is that two commands creating the same directory at the same time?
>I would guess two parallel make invocations both running the 
>check-for-existence-otherwise-create-sequence simultaneously. So both fail 
>the existence check and then both try to mkdir.
>
>> In whick case it is a bug in the makefile.
>Is it? Is it illegal for two Makefiles to have
>foo:
>	mkdir foo
>in it and be invoked in parallel?
>
>> OTOH mkdir failing EEXIST isn't useful - with nfs it happens if the
>> response is lost and the request retried.
>Yes.

They should be doing mkdir -p foo

christos