43 lines
1.7 KiB
Markdown
43 lines
1.7 KiB
Markdown
### Android example
|
|
|
|
To compile example to shared library you will need [Android NDK](https://developer.android.com/ndk/downloads/index.html).
|
|
To build Android apk you will need [Android SDK](http://developer.android.com/sdk/index.html#Other).
|
|
|
|
Export path to Android NDK, point to location where you have unpacked archive:
|
|
|
|
export ANDROID_NDK_HOME=/opt/android-ndk
|
|
|
|
Add toolchain bin directory to PATH:
|
|
|
|
export PATH=${ANDROID_NDK_HOME}/toolchains/llvm/prebuilt/linux-x86_64/bin:${PATH}
|
|
|
|
Export sysroot and libdirs:
|
|
|
|
export ANDROID_SYSROOT=${ANDROID_NDK_HOME}/toolchains/llvm/prebuilt/linux-x86_64/sysroot
|
|
export ANDROID_TOOLCHAIN=${ANDROID_NDK_HOME}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
|
|
|
|
Export API version:
|
|
|
|
export ANDROID_API=16
|
|
|
|
And compile shared library:
|
|
|
|
CC="armv7a-linux-androideabi${ANDROID_API}-clang" \
|
|
CGO_CFLAGS="-I${ANDROID_SYSROOT}/usr/include -I${ANDROID_SYSROOT}/usr/include/arm-linux-androideabi --sysroot=${ANDROID_SYSROOT} -D__ANDROID_API__=${ANDROID_API}" \
|
|
CGO_LDFLAGS="-L${ANDROID_SYSROOT}/usr/lib/arm-linux-androideabi/${ANDROID_API} -L${ANDROID_TOOLCHAIN}/arm-linux-androideabi/lib --sysroot=${ANDROID_SYSROOT}" \
|
|
CGO_ENABLED=1 GOOS=android GOARCH=arm \
|
|
go build -buildmode=c-shared -ldflags="-s -w -extldflags=-Wl,-soname,libexample.so" \
|
|
-o=android/libs/armeabi-v7a/libexample.so
|
|
|
|
To build apk export path to Android SDK, point to location where you unpacked archive:
|
|
|
|
export ANDROID_HOME=/opt/android-sdk
|
|
|
|
And build apk:
|
|
|
|
./gradlew assembleDebug
|
|
|
|
If everything is successfully built apk can be found in the android/build/outputs.
|
|
|
|
|
|
For aarch64/arm64 replace `arm-linux-androideabi` with `aarch64-linux-android`, set GOARCH to arm64 and use minimum `ANDROID_API=21`.
|