Milter-greylist

> Here is milter-greylist 4.5.5:
> 
> ftp://ftp.espci.fr/pub/milter-greylist/milter-greylist-4.5.5.tgz
> MD5 (milter-greylist-4.5.5.tgz) = 4e8f0a6c7337aaef0646db18cb446580
> 
> ChangeLog since 4.5.1 (latest publically announced)
> 
> 4.5.5
>         (just fix version number)
> 4.5.4
>         Fix memory leak in log ACL clause
>         Updated AUTHORS in man page
>         Typos in man page, style (Jim Klimov)
>         Numeric operator tests for property versus number
>         Numeric operator tests for property versus property
> 4.5.3
>         format string expanstion now honour %r everywhere possible
>         unbracket option to resolved MTA-passed bracketed unresolved IP
>         set ACL clause to set/increment/decrement properties
>         log ACL clause to send formatted string to syslog
> 4.5.2
>         Fix crash when chown socket without group
>         Fix memory leak in nsupdate config reload
>         Fix nsupdate servers option
>         Build fixes (John Wood)
>         Fix ACL bypass for second recipient when sender passed auth/tls/spf
>         Parallel build (Jim Klimov)
>         Configurable package information (Jim Klimov)
>         More verbosity in SPF logs (Jim Klimov)
>         Use localaddr for p0f and %V format string (Jim Klimov)
>         Search . first for includes (Jim Klimov)
>         Make unknown AF family non fatal in p0f, report errors once (Jim Klimov)
> 

Hello,

My old make does not support parallel builds.
Which is the configure option that I can use to disable that special build feature?
( Instead do the traditional sequential build. )

Best,
Attila