How to compile perf for Android
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I. Set the Android NDK environment
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(a). Use the Android NDK
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1. You need to download and install the Android Native Development Kit (NDK).
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Set the NDK variable to point to the path where you installed the NDK:
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export NDK=/path/to/android-ndk
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2. Set cross-compiling environment variables for NDK toolchain and sysroot.
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For arm:
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export NDK_TOOLCHAIN=${NDK}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
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export NDK_SYSROOT=${NDK}/platforms/android-24/arch-arm
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For x86:
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export NDK_TOOLCHAIN=${NDK}/toolchains/x86-4.9/prebuilt/linux-x86_64/bin/i686-linux-android-
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export NDK_SYSROOT=${NDK}/platforms/android-24/arch-x86
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This method is only tested for Android NDK versions Revision 11b and later.
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perf uses some bionic enhancements that are not included in prior NDK versions.
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You can use method (b) described below instead.
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(b). Use the Android source tree
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1. Download the master branch of the Android source tree.
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Set the environment for the target you want using:
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source build/envsetup.sh
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lunch
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2. Build your own NDK sysroot to contain latest bionic changes and set the
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NDK sysroot environment variable.
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cd ${ANDROID_BUILD_TOP}/ndk
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For arm:
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./build/tools/build-ndk-sysroot.sh --abi=arm
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export NDK_SYSROOT=${ANDROID_BUILD_TOP}/ndk/build/platforms/android-3/arch-arm
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For x86:
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./build/tools/build-ndk-sysroot.sh --abi=x86
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export NDK_SYSROOT=${ANDROID_BUILD_TOP}/ndk/build/platforms/android-3/arch-x86
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3. Set the NDK toolchain environment variable.
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For arm:
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export NDK_TOOLCHAIN=${ANDROID_TOOLCHAIN}/arm-linux-androideabi-
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For x86:
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export NDK_TOOLCHAIN=${ANDROID_TOOLCHAIN}/i686-linux-android-
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II. Compile perf for Android
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You need to run make with the NDK toolchain and sysroot defined above:
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For arm:
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make WERROR=0 ARCH=arm CROSS_COMPILE=${NDK_TOOLCHAIN} EXTRA_CFLAGS="-pie --sysroot=${NDK_SYSROOT}"
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For x86:
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make WERROR=0 ARCH=x86 CROSS_COMPILE=${NDK_TOOLCHAIN} EXTRA_CFLAGS="-pie --sysroot=${NDK_SYSROOT}"
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III. Install perf
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You need to connect to your Android device/emulator using adb.
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Install perf using:
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adb push perf /data/perf
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If you also want to use perf-archive you need busybox tools for Android.
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For installing perf-archive, you first need to replace #!/bin/bash with #!/system/bin/sh:
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sed 's/#!\/bin\/bash/#!\/system\/bin\/sh/g' perf-archive >> /tmp/perf-archive
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chmod +x /tmp/perf-archive
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adb push /tmp/perf-archive /data/perf-archive
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IV. Environment settings for running perf
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Some perf features need environment variables to run properly.
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You need to set these before running perf on the target:
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adb shell
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# PERF_PAGER=cat
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IV. Run perf
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Run perf on your device/emulator to which you previously connected using adb:
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# ./data/perf
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