AetherSX2

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Latest LGPL code of AetherSX2 provided by Tahlreth @ https://www.aethersx2.com/lgpl/aethersx2-lgpl.tar.gz

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# AetherSX2
Latest LGPL code of AetherSX2 provided by Tahlreth @ https://www.aethersx2.com/lgpl/aethersx2-lgpl.tar.gz

# AetherSX2 Build Instructions

Please note that this is *not* a full source release for the library, only the LGPL sources, and parts of which that have been modified.
Releasing full source code is *not* required by the LGPL, only that the closed source components can be re-linked/combined with
the LGPL components and build instructions included as per section 4/5 of the license.

We ask that you respect the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives International License
(BY-NC-ND 4.0, https://creativecommons.org/licenses/by-nc-nd/4.0/), which covers all the non-LGPL portions of the app.
Any modified versions of the application should not be distributed, and we do not give you permission to use AetherSX2
to make money, from direct sales nor ad revenue or other means.

An apk suitable for injecting the recompiled library is provided as a convenience, as the library cannot be used outside
of the Android app without modification.

You will need:
 - Android SDK, Build Tools and NDK. We use SDK 31, build-tools 31 and NDK 23.1.7779620.
 - A Linux machine. We used Ubuntu 20.04.3 LTS.
 - CMake 3.22.0. You can get this from the Kitware repository for Ubuntu distros.

You should have:
 - aethersx2: Folder containing source code.
 - app-release-unsigned.apk: Unsigned APK containing compiled Java code without native library.

We have verified that the library can be re-linked/reproduced on the above system configuration. If you use a different configuration,
it is not guaranteed to be functional.

Build steps:

1. Change into that directory: cd aethersx2
2. Create a build directory for the native library and change into it: mkdir build-android; cd build-android
3. Configure the build system. Change PATH_TO_NDK to whereever the NDK is installed: cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=/PATH_TO_NDK/build/cmake/android.toolchain.cmake -DANDROID_PLATFORM=android-26 -DANDROID_ABI=arm64-v8a ..
4. Compile the native library: make -j16 (or whatever CPU count you have)
5. Create a directory for packaging the APK: mkdir apk; cd apk
6. Copy the skeleton APK to this directory: cp PATH_TO_app-release-unsigned.apk aethersx2.apk
7. Copy the native library into the correct location: mkdir -p lib/arm64-v8a; cp ../pcsx2/libemucore.so lib/arm64-v8a
8. Add the native library to the APK. zip is used instead of aapt because aapt will compress it: zip -0 aethersx2.apk lib/arm64-v8a/libemucore.so
9. Ensure the native library is aligned to a 4-byte boundary: zipalign -p 4 aethersx2.apk aethersx2-aligned.apk
10. Create a signing key for your build. Mark down the keystore password. keytool -genkey -v -keystore keyname.keystore -alias keyname -keyalg RSA -keysize 2048 -validity 10000
11. Sign the APK, replacing PASSWORD_TO_KEYSTORE with above: apksigner sign --ks keyname.keystore --ks-pass "pass:PASSWORD_TO_KEYSTORE" --ks-key-alias keyname --out aethersx2-signed.apk --verbose aethersx2-aligned.apk

This will produce aethersx2-signed.apk, which can be installed on your device.

AetherSX2

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