Subject: Re: [SG15] [isocpp-modules] Reuse of the built modules (BMI) paper
From: Ben Boeckel (ben.boeckel_at_[hidden])
Date: 2019-06-18 12:04:28
On Mon, Jun 17, 2019 at 14:48:18 -0400, Matthew Woehlke wrote:
> that a.cpp depends on, whereas I *always*Â¹ need to rebuild the BMI for
> a.cpp with or without reusable BMI's.
> (Â¹ Pedantically, it depends on if what was changed affects the BMI or
> not. I'm not sure if IDE's will become "smart enough" to make this
The compiler can decide to say the BMI that is there is sufficient and
leave it alone (either by hash or mtime). At least ninja (with `restat =
1`) will see that and prune the subgraph that no longer needs scheduled
because it is up-to-date with the output.
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