How to find the right version of depot_tools to build a given version of Chrome or ChromeOS?

[Richard Yeh]

I am attempting a large bisect where I need to build Chrome at each version. I'm encountering error messages that don't find many search results, perhaps because I am using the latest depot_tools on a six-month-old (or older) chromium checkout --- an unlikely combination.

How can I find the right version of depot_tools to build a given version of Chrome or ChromeOS?  I could guess based on commit dates in depot_tools and Chrome/ChromeOS build dates; but I was wondering if there might be a better way, perhaps with a system of tags or a mapping file?

Thanks,

Richard

[Richard Yeh]

The error I'm chasing down is: in my ~/chromium/src directory, I did `git checkout 86.0.4187.0` and then attempted to `gn gen out_${BOARD}/Release`:

```

gn gen out_${BOARD}/Release

ERROR at //build/config/BUILDCONFIG.gn:401:1: set_sources_assignment_filter argument must be an empty list.

set_sources_assignment_filter(sources_assignment_filter)

^------------------------------------------------------

```

A search turned up: https://aur.archlinux.org/packages/chromium-vaapi/?comments=all&O=20&PP=10#comment-777773 and https://magpcss.org/ceforum/viewtopic.php?f=6&t=17992 , which suggested checking the depot_tools version.

[Takuto Ikuta]

Did you run gclient sync after checkout?

I think the latest depot_tools is supposed to handle some old revision like 6 months ago.

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[Richard Yeh]

Thank you! You're right, `gclient sync` is just what I needed.

[Dirk Pranke]

For the record, the issue here isn't actually that your depot_tools version was too recent, it was that your chromium dependencies weren't in sync, and you were getting a newer version of GN than you should've been using. GN is a chromium dependency, and running `gclient sync` made all of the chromium dependencies align with the version of your checkout.

-- Dirk

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