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