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Re: how to disable all checking of prerequisites
From: |
Eli Zaretskii |
Subject: |
Re: how to disable all checking of prerequisites |
Date: |
Sat, 14 Nov 2009 20:59:04 +0200 |
> From: Paul Smith <address@hidden>
> Date: Fri, 13 Nov 2009 22:20:32 -0500
> Cc: "address@hidden" <address@hidden>
>
> I just tried this on my Linux box, by touching 1000 files:
>
> i=1; while [[ $i -le 1000 ]]; do touch foo$i; : $((++i)); done
>
> then creating a makefile with nothing in it but a target "foo" listing
> all 1000 fooNNN files as prerequisites, and no rules to build any of
> them.
>
> When I run normal make, it takes an average of 0.23s to run.
>
> When I run make -r, it takes an average of 0.006s to run.
Can you show this Makefile? I'd like to time that on my system.
Thanks.