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