On Wed, Feb 5, 2014 at 12:50 PM, Jeff King wrote:
> It's a common pattern in our Makefile to echo some make
> variables into a file, but only if they are different from a
> previous run. This sentinel file can then be used as a
> dependency to trigger rebuilds when the make variable
> changes.
>
>
It's a common pattern in our Makefile to echo some make
variables into a file, but only if they are different from a
previous run. This sentinel file can then be used as a
dependency to trigger rebuilds when the make variable
changes.
The code to do this is a bit ugly and repetetive; let's
factor
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