Re: [Automake-NG] [PATCH 1/2] [ng] perf: disable GNU make builtin rules, for performance reasons

[Akim Demaille]

Le 27 juin 2012 à 18:05, Stefano Lattarini a écrit :

> * lib/am/header-vars (MAKEFLAGS): Append '--no-builtin-rules'.  This
> enhance performance by removing GNU make builtin rules that would be
> rather irrelevant (e.g., rules to automatically check out files from
> from RCS or SCCS repositories), or overridden by Automake (e.g., rules
> to compile C or C++ files).  With this simple tweak, the null-build
> time on GNU coreutils on an aging Debian system goes down from ~ 20
> seconds to ~ 9 seconds.

Nice move.  Actually, even when simply trying to debug a Makefile,
-R is a must have.