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misc/android: add more information to README
Add more information to misc/android/README for developing arm and arm64 with an Android environment. Change-Id: I0c88996b6ab0c41946a2c7e69e9c92ec7bb3be27 Reviewed-on: https://go-review.googlesource.com/112276 Reviewed-by: Elias Naur <elias.naur@gmail.com>
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To run the standard library tests, see androidtest.bash. Run it as
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To run the standard library tests, see androidtest.bash. Run it as
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CC_FOR_TARGET=.../ndk-gcc GOARCH=arm GOARM=7 ./androidtest.bash
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CC_FOR_TARGET=$STANDALONE_NDK_PATH/bin/clang GOARCH=arm64 ./androidtest.bash
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To create a standalone android NDK tool chain, follow the instructions on
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https://developer.android.com/ndk/guides/standalone_toolchain
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To run tests on the Android device, add the bin directory to PATH so the
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go tool can find the go_android_$GOARCH_exec wrapper generated by
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androidtest.bash. Then, use the same GOARCH as when androidtest.bash ran
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and set GOOS to android. For example, to run the go1 benchmarks
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export PATH=$GOROOT/bin:$PATH
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cd $GOROOT/test/bench/go1/
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GOOS=android GOARCH=arm64 go test -bench=. -count=N -timeout=T
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