4 The perf build process consists of several separated building blocks,
5 which are linked together to form the perf binary:
6 - libperf library (static)
7 - perf builtin commands
8 - traceevent library (static)
11 Several makefiles govern the perf build:
14 top level Makefile working as a wrapper that calls the main
15 Makefile.perf with a -j option to do parallel builds.
18 main makefile that triggers build of all perf objects including
19 installation and documentation processing.
21 - tools/build/Makefile.build
22 main makefile of the build framework
24 - tools/build/Build.include
25 build framework generic definitions
28 makefiles that defines build objects
30 Please refer to tools/build/Documentation/Build.txt for more
31 information about build framework.
36 The Makefile.perf triggers the build framework for build objects:
39 resulting in following objects:
41 gtk-in.o libperf-in.o perf-in.o
43 Those objects are then used in final linking:
44 libperf-gtk.so <- gtk-in.o libperf-in.o
45 perf <- perf-in.o libperf-in.o
48 NOTE this description is omitting other libraries involved, only
49 focusing on build framework outcomes
51 3) Build with ASan or UBSan
52 ==========================
55 $ make DESTDIR=/usr install
57 AddressSanitizer (or ASan) is a GCC feature that detects memory corruption bugs
58 such as buffer overflows and memory leaks.
61 $ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=address'
62 $ ASAN_OPTIONS=log_path=asan.log ./perf record -a
64 ASan outputs all detected issues into a log file named 'asan.log.<pid>'.
66 UndefinedBehaviorSanitizer (or UBSan) is a fast undefined behavior detector
67 supported by GCC. UBSan detects undefined behaviors of programs at runtime.
70 $ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=undefined'
71 $ UBSAN_OPTIONS=print_stacktrace=1 ./perf record -a
73 If UBSan detects any problem at runtime, it outputs a “runtime error:” message.
77 As Multiarch is commonly supported in Linux distributions, we can install
78 libraries for multiple architectures on the same system and then cross-compile
79 Linux perf. For example, Aarch64 libraries and toolchains can be installed on
80 an x86_64 machine, allowing us to compile perf for an Aarch64 target.
82 Below is the command for building the perf with dynamic linking.
85 $ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -C tools/perf
87 For static linking, the option `LDFLAGS="-static"` is required.
89 $ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- \
90 LDFLAGS="-static" -C tools/perf
92 In the embedded system world, a use case is to explicitly specify the package
93 configuration paths for cross building:
95 $ PKG_CONFIG_SYSROOT_DIR="/path/to/cross/build/sysroot" \
96 PKG_CONFIG_LIBDIR="/usr/lib/:/usr/local/lib" \
97 make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -C tools/perf
99 In this case, the variable PKG_CONFIG_SYSROOT_DIR can be used alongside the
100 variable PKG_CONFIG_LIBDIR or PKG_CONFIG_PATH to prepend the sysroot path to
101 the library paths for cross compilation.