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Re: How does make decide if a binary is 'up to date'
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From: |
John Calcote |
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Subject: |
Re: How does make decide if a binary is 'up to date' |
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Date: |
Thu, 2 May 2019 12:32:01 -0600 |
Hi Chris,
Make uses file existence and last-modified timestamps to determine if a
target is newer than it's prerequisites. There are other tools that use
checksums like md5, but make only uses presence and timestamps.
John
On Thu, May 2, 2019 at 11:52 AM <address@hidden> wrote:
> Hi all
>
> Say I would like to reproduce the behavior of make. How exactly does
> make decide if a binary is 'up to date'?
> Maybe something like this?:
>
> https://unix.stackexchange.com/questions/372857/compare-two-file-modification-dates
> But how exactly?
>
> Thanks a lot for any answer,
> Chris
>
>
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