1 How to compile perf for Android 2 ========================================= 3 4 I. Set the Android NDK environment 5 ------------------------------------------------ 6 7 (a). Use the Android NDK 8 ------------------------------------------------ 9 1. You need to download and install the Android Native Development Kit (NDK). 10 Set the NDK variable to point to the path where you installed the NDK: 11 export NDK=/path/to/android-ndk 12 13 2. Set cross-compiling environment variables for NDK toolchain and sysroot. 14 For arm: 15 export NDK_TOOLCHAIN=${NDK}/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/arm-linux-androideabi- 16 export NDK_SYSROOT=${NDK}/platforms/android-9/arch-arm 17 For x86: 18 export NDK_TOOLCHAIN=${NDK}/toolchains/x86-4.6/prebuilt/linux-x86/bin/i686-linux-android- 19 export NDK_SYSROOT=${NDK}/platforms/android-9/arch-x86 20 21 This method is not working for Android NDK versions up to Revision 8b. 22 perf uses some bionic enhancements that are not included in these NDK versions. 23 You can use method (b) described below instead. 24 25 (b). Use the Android source tree 26 ----------------------------------------------- 27 1. Download the master branch of the Android source tree. 28 Set the environment for the target you want using: 29 source build/envsetup.sh 30 lunch 31 32 2. Build your own NDK sysroot to contain latest bionic changes and set the 33 NDK sysroot environment variable. 34 cd ${ANDROID_BUILD_TOP}/ndk 35 For arm: 36 ./build/tools/build-ndk-sysroot.sh --abi=arm 37 export NDK_SYSROOT=${ANDROID_BUILD_TOP}/ndk/build/platforms/android-3/arch-arm 38 For x86: 39 ./build/tools/build-ndk-sysroot.sh --abi=x86 40 export NDK_SYSROOT=${ANDROID_BUILD_TOP}/ndk/build/platforms/android-3/arch-x86 41 42 3. Set the NDK toolchain environment variable. 43 For arm: 44 export NDK_TOOLCHAIN=${ANDROID_TOOLCHAIN}/arm-linux-androideabi- 45 For x86: 46 export NDK_TOOLCHAIN=${ANDROID_TOOLCHAIN}/i686-linux-android- 47 48 II. Compile perf for Android 49 ------------------------------------------------ 50 You need to run make with the NDK toolchain and sysroot defined above: 51 For arm: 52 make ARCH=arm CROSS_COMPILE=${NDK_TOOLCHAIN} CFLAGS="--sysroot=${NDK_SYSROOT}" 53 For x86: 54 make ARCH=x86 CROSS_COMPILE=${NDK_TOOLCHAIN} CFLAGS="--sysroot=${NDK_SYSROOT}" 55 56 III. Install perf 57 ----------------------------------------------- 58 You need to connect to your Android device/emulator using adb. 59 Install perf using: 60 adb push perf /data/perf 61 62 If you also want to use perf-archive you need busybox tools for Android. 63 For installing perf-archive, you first need to replace #!/bin/bash with #!/system/bin/sh: 64 sed 's/#!\/bin\/bash/#!\/system\/bin\/sh/g' perf-archive >> /tmp/perf-archive 65 chmod +x /tmp/perf-archive 66 adb push /tmp/perf-archive /data/perf-archive 67 68 IV. Environment settings for running perf 69 ------------------------------------------------ 70 Some perf features need environment variables to run properly. 71 You need to set these before running perf on the target: 72 adb shell 73 # PERF_PAGER=cat 74 75 IV. Run perf 76 ------------------------------------------------ 77 Run perf on your device/emulator to which you previously connected using adb: 78 # ./data/perf 79
