QUICHE BUILD rules?

[mark a. foltz]

Greetings QUIC maintainers,

Wei (external contributor) is working to build QUICHE in our library and I am trying to understand the quiche GN rules in Chromium.

quiche generates a .gni file with targets for core, tools, test support, etc.:

https://source.chromium.org/chromium/chromium/src/+/main:net/third_party/quiche/src/build/source_list.gni

but Chromium ignores this file and has its own rules downstream:

https://source.chromium.org/chromium/chromium/src/+/main:net/third_party/quiche/BUILD.gn;drc=b6ec45be89ddc79b7aee83c71419ae7e4f67e024;l=54

- Why does Chromium GN have separate file lists and not use the .gni from quiche?

- How does Chromium's file list stay up to date across quiche rolls?

Any insights appreciated.

m.

[David Benjamin]

+Victor Vasiliev 

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[Patrick Meenan]

I can't answer the "why" part, but for "how", we have a quiche roll eng rotation where any changes (including build changes) that need to be made on the Chromium side are made when we do the roll.

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[Victor Vasiliev]

Historical reasons.  The BUILD.gn file in Chromium predates the autogenerated file in the QUICHE repo.  I was planning to switch the Chromium build files to use the autogenerated one in QUICHE (provided that it works), but never got around to it.

[mark a. foltz]

Got it.  Wei has found the file lists are slightly different.  I can try putting up a patch and see if anything breaks.