5.3 KiB
Vcpkg: export Android prefab Archives (AAR files)
Vcpkg can export android archives (AAR files). Once an archive is created, it can imported in Android Studio as a native dependent. The archive is automatically consumed using android studio's prefab tool.
For more information on Prefab, refer to:
- The official prefab documentation.
- a blog post from Android developers blog: Native Dependencies in Android Studio 4.0
Note for Android Studio users: prefab packages are supported on Android Studio 4+
Requirements
ndk <required>
Set environment variable ANDROID_NDK_HOME to your android ndk installation. For example:
export ANDROID_NDK_HOME=/home/your-account/Android/Sdk/ndk-bundle
-
7zip <required on windows>orzip <required on linux> -
maven <optional> -
Android triplets
See android.md for instructions on how to install the triplets.
Please note that in order to use "prefab" (see below), the four architectures are required. If any is missing the export will fail
Example exporting [jsoncpp]
First "vcpkg install" the 4 android architectures (it is mandatory to export all 4 of them)
./vcpkg install jsoncpp:arm-android jsoncpp:arm64-android jsoncpp:x64-android jsoncpp:x86-android
Then, export the prefab:
Note:
- The
--prefab-mavenflag is optional. Call it if you maven is installed. - The
--prefab-debugflag will output instructions on how to use the prefab archive via gradle.
./vcpkg export --triplet x64-android jsoncpp --prefab --prefab-maven --prefab-debug
You will see an ouput like this:
The following packages are already built and will be exported:
jsoncpp:arm64-android
Exporting package jsoncpp...
[DEBUG] Found 4 triplets
arm64-android
x64-android
x86-android
arm-android
...
... Lots of output...
...
[INFO] Scanning for projects...
Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.5/maven-clean-plugin-2.5.pom
...
... Lots of output...
...
[INFO] BUILD SUCCESS
[INFO] Total time: 2.207 s
[INFO] Finished at: 2020-05-10T14:42:28+02:00
...
... Lots of output...
...
[DEBUG] Configuration properties in Android Studio
In app/build.gradle
com.vcpkg.ndk.support:jsoncpp:1.9.2
And cmake flags
externalNativeBuild {
cmake {
arguments '-DANDROID_STL=c++_shared'
cppFlags "-std=c++17"
}
}
In gradle.properties
android.enablePrefab=true
android.enableParallelJsonGen=false
android.prefabVersion=${prefab.version}
Successfuly exported jsoncpp. Checkout .../vcpkg/prefab
The output directory after export
prefab
└── jsoncpp/
├── aar/
│ ├── AndroidManifest.xml
│ ├── META-INF/
│ │ └── LICENSE
│ └── prefab/
│ ├── modules/
│ │ └── jsoncpp/
│ │ ├── libs/
│ │ │ ├── android.arm64-v8a/
│ │ │ │ ├── abi.json
│ │ │ │ ├── include/
│ │ │ │ │ └── json/
│ │ │ │ │ ├── json.h
│ │ │ │ │ └── ....
│ │ │ │ └── libjsoncpp.so
│ │ │ ├── android.armeabi-v7a/
│ │ │ │ ├── abi.json
│ │ │ │ ├── include/
│ │ │ │ │ └── json/
│ │ │ │ │ ├── json.h
│ │ │ │ │ └── ....
│ │ │ │ └── libjsoncpp.so
│ │ │ ├── android.x86/
│ │ │ │ ├── abi.json
│ │ │ │ ├── include/
│ │ │ │ │ └── json/
│ │ │ │ │ ├── json.h
│ │ │ │ │ └── ....
│ │ │ │ └── libjsoncpp.so
│ │ │ └── android.x86_64/
│ │ │ ├── abi.json
│ │ │ ├── include/
│ │ │ │ └── json/
│ │ │ │ │ ├── json.h
│ │ │ │ │ └── ....
│ │ │ └── libjsoncpp.so
│ │ └── module.json
│ └── prefab.json
├── jsoncpp-1.9.2.aar
└── pom.xml
Example consuming [jsoncpp] via vcpkg and prefab
See the example repo here: