MAP_ANONYMOUS isn't portable

[simo]

On Sun, 2011-08-14 at 20:46 +1000, Andrew Bartlett wrote:
> Simo and Andreas,
> 
> I wasn't sure if you noticed, but a large number of hosts on the build
> farm now fail to build because MAP_ANONYMOUS isn't portable. 
> 
> It was introduced in:
> 
> commit 4fef4fe4986245bfd0ac0c3a3d3a10d330bae09c
> Author: Simo Sorce <idra at samba.org>
> Date:   Wed Apr 20 16:28:57 2011 -0400
> 
>     s3-prefork: implement prefork framework
>     
>     Primarily built for forked off rpc service daemons, but not tied to
> rpc
>     services and generic enough to be used elsewhere easily.
>     
>     Signed-off-by: Andreas Schneider <asn at samba.org>
> 
> An example failing build is:
> 
> http://build.samba.org/build.cgi/build/d24732a709b239e1896103e0ce366b821eef7d0b
> 

I have 3 patches in autobuild that should take care of this.

Btw, while making them I noticed that we test mmap and set HAVE_MMAP
accordingly, but then we do not wrap all mmap calls withing HAVE_MMAP
ifdefs. Not sure we actually can work w/o mmap, so I wonder if we
shouldn't rather turn the configure test into a fatal failure if mmap is
not found.

Simo.

-- 
Simo Sorce
Samba Team GPL Compliance Officer <simo at samba.org>
Principal Software Engineer at Red Hat, Inc. <simo at redhat.com>