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残页 ae34659b26
No kernel repack if it isn't patched at all 
It turns out that decompressing and recompressing the kernel is enough to break booting on many devices that use MT6763.
Fix #5124, fix #6204, fix #6566 

Co-authored-by: LoveSy <shana@zju.edu.cn>
Co-authored-by: 南宫雪珊 <vvb2060@gmail.com>
2023-02-17 15:00:14 -08:00
..
src No kernel repack if it isn't patched at all 2023-02-17 15:00:14 -08:00
.gitignore Support Android Q new init setup 2019-03-03 06:35:25 -05:00
build.gradle.kts Restructure the native module 2022-07-23 13:51:56 -07:00
README.md Restructure the native module 2022-07-23 13:51:56 -07:00

README.md

Native Development

Prerequisite

Install the NDK required to build and develop Magisk with ./build.py ndk. The NDK will be installed to $ANDROID_SDK_ROOT/ndk/magisk. You don't need to manually install a Rust toolchain with rustup, as the NDK installed already has a Rust toolchain bundled.

Build Configs

All C/C++ code and its dependencies are built with ndk-build and configured with several *.mk files scattered in many places.

The src folder is also a proper Cargo workspace, and all Rust code is built with cargo just like normal Rust projects.

Rust + C/C++

To reduce complexity involved in linking, all Rust code is built as staticlib and linked to C++ targets to ensure our final product is built with an officially supported NDK build system. Each C++ target can at most link to one Rust staticlib or else multiple definitions error will occur.

We use the cxx project for Rust and C++ interop.

Development / IDE

All C++ code should be recognized and properly indexed by Android Studio out of the box. For Rust:

  • Install the Rust plugin in Android Studio
  • In Preferences > Languages & Frameworks > Rust, set $ANDROID_SDK_ROOT/ndk/magisk/toolchains/rust/bin as the toolchain location
  • Open native/src/Cargo.toml, and select "Attach" in the "No Cargo projects found" banner

Note: run ./build.py binary before developing to make sure generated code is created.