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Generator Cache doesn't work with --no-export #673

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nicorum opened this issue Feb 21, 2024 · 2 comments · May be fixed by #704
Open

Generator Cache doesn't work with --no-export #673

nicorum opened this issue Feb 21, 2024 · 2 comments · May be fixed by #704

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@nicorum
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nicorum commented Feb 21, 2024

When using the --no-export argument the generator cache gets placed in the build/<core>/<target>-<tool>/generator_cache folder instead of the .cache/fusesoc/generator_cache folder. But this folder is removed at the start of each fusesoc run. Which is why the generator_cache does not work with the --no-export argument.

I can fix this problem for me by removing self.gen_root from the line that contains self.gen_root or self.core.cache_root, in the Ttptttg class. But I don't want to create a pull request with the possible fix. Because I don't understand what the exact purpose of using self.gen_root is. Is this behaviour intended?
@olofk
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olofk commented Mar 7, 2024

Hmm... good question. There is some complexity in that part of the code, so I can't honestly say right away if it's a bug or the intended way. One thing though, did you mark your generator as cacheable? That also needs to be done.

@nicorum
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nicorum commented Mar 12, 2024

I'm using cache_type: input in the generator core.
Caching works with this generator when not using the --no-export flag.

If you can't reproduce the problem, I can create and upload a minimal example.

@nicorum nicorum linked a pull request Sep 12, 2024 that will close this issue
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Fixed Generator Cache with --no-export nicorum/fusesoc
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@olofk @nicorum