38 lines
1.5 KiB
Markdown
38 lines
1.5 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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Download and unpack archives somewhere.
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Go must be cross compiled for android. There is a bootstrap.sh script that you can use to compile Go for android/arm and android/arm64.
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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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Compile Go and android_native_app_glue, /usr/local is prefix where Go and Android toolchains will be installed:
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./bootstrap.sh /usr/local
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After build is complete point GOROOT to new Go installation in /usr/local, and add toolchain bin directory to PATH:
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export GOROOT=/usr/local/go
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export PATH=/usr/local/android-arm7/bin:${PATH}
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And compile shared library:
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CGO_CFLAGS="-I/usr/local/android-arm7/include" CGO_LDFLAGS="-L/usr/local/android-arm7/lib" \
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CC=arm-linux-androideabi-gcc CGO_ENABLED=1 GOOS=android GOARCH=arm \
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${GOROOT}/bin/go build -v -x -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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If everything is successfully built apk can be found in bin/ directory.
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