Gentoo GSoC Weekly Report 07/16
Summary
This week is mainly about decoupling toolchain from Android Build System so as to enable a local build of Android on the phone itself. Toolchains for the following programming languages are needed throughout the entire build:
- C/C++ (Android Platform)
- Java (Android Platform, apps)
- Go (build system, i.e. Soong & Blueprint)
As of current, the entire source tree is mounted onto the phone via NFS. Tweak kernel config to enable NFS, emerge net-fs/nfs-utils, then mount the filesystem. Refer to nfs(5) for more information. The articles in this report assume that the AOSP tree is mounted at /import/lineageos.
The last week's work sums up into the following two articles:
- Enabling aarch64 as a host architecture for Android Build (WIP): logs modifications made to accomodate system toolchains for
aarch64into the build system.- This is necessary as Google doesn't provide prebuilt toolchains for
aarch64hosts; the build system assumesx86here and there as well.
- This is necessary as Google doesn't provide prebuilt toolchains for
- Using distcc to speed up builds on phone: speed up Portage builds on phone with
distccdrunning on the laptop. - C/C++ Toolchain for Android Build on aarch64 (WIP): attempt to get the set of toolchains for building Android on aarch64.
This week did not achieve any significant milestones; instead, several obstacles are discovered. They are discussed in the relative articles.