[gentoo-soc] Weekly Report: Portage Powered Android

[Gunwant Jain <therealgunwant@gmail.com>]

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Hi all,

This and the previous week, I have been working on building AOSP's LLVM
toolchain for aarch64. tldr is that I have succeeded in doing so, but I
have yet to commit my progress at the (yet to be) SharkBait manifest[1].

Really there are just a couple of things to work on before we are ready
to build Android on arm64:

1. The build process is a bit immature. I will commit the polished
changes in a day or two at the LLVM source[2].

2. While trying to minimize dependencies that AOSP bundles for building
LLVM, I noticed that building LLVM requires using libraries from a
prebuilt gcc[3]. This is unwanted because we aim not to use any of the
prebuilt dependencies that AOSP ships. 
Therefore this week I am working upon building AOSP's gcc[4] for
aarch64.

Once the GCC dependency is sorted, I will start testing building Lineage
on aarch64. I have set a personal goal to atleast start these tests by
this week, since we do not have much time left.

Finally, I would like to thank my mentor, Heroxbd for providing the
arm64 server, due to which I could pick up the pace and build AOSP's
LLVM on aarch64.


Regards,
Gunwant

[1] https://github.com/WantGuns/manifest/tree/lineage-17.1
[2] https://github.com/WantGuns/toolchain_llvm_android
[3] https://github.com/WantGuns/manifest/blob/llvm-r353983/default.xml#L39
[4] https://android.googlesource.com/toolchain/gcc

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