1 1
2 1) perf build 2 1) perf build
3 ============= 3 =============
4 The perf build process consists of several sep 4 The perf build process consists of several separated building blocks,
5 which are linked together to form the perf bin 5 which are linked together to form the perf binary:
6 - libperf library (static) 6 - libperf library (static)
7 - perf builtin commands 7 - perf builtin commands
8 - traceevent library (static) 8 - traceevent library (static)
9 - GTK ui library 9 - GTK ui library
10 10
11 Several makefiles govern the perf build: 11 Several makefiles govern the perf build:
12 12
13 - Makefile 13 - Makefile
14 top level Makefile working as a wrapper th 14 top level Makefile working as a wrapper that calls the main
15 Makefile.perf with a -j option to do paral 15 Makefile.perf with a -j option to do parallel builds.
16 16
17 - Makefile.perf 17 - Makefile.perf
18 main makefile that triggers build of all p 18 main makefile that triggers build of all perf objects including
19 installation and documentation processing. 19 installation and documentation processing.
20 20
21 - tools/build/Makefile.build 21 - tools/build/Makefile.build
22 main makefile of the build framework 22 main makefile of the build framework
23 23
24 - tools/build/Build.include 24 - tools/build/Build.include
25 build framework generic definitions 25 build framework generic definitions
26 26
27 - Build makefiles 27 - Build makefiles
28 makefiles that defines build objects 28 makefiles that defines build objects
29 29
30 Please refer to tools/build/Documentation/Buil 30 Please refer to tools/build/Documentation/Build.txt for more
31 information about build framework. 31 information about build framework.
32 32
33 33
34 2) perf build 34 2) perf build
35 ============= 35 =============
36 The Makefile.perf triggers the build framework 36 The Makefile.perf triggers the build framework for build objects:
37 perf, libperf, gtk 37 perf, libperf, gtk
38 38
39 resulting in following objects: 39 resulting in following objects:
40 $ ls *-in.o 40 $ ls *-in.o
41 gtk-in.o libperf-in.o perf-in.o 41 gtk-in.o libperf-in.o perf-in.o
42 42
43 Those objects are then used in final linking: 43 Those objects are then used in final linking:
44 libperf-gtk.so <- gtk-in.o libperf-in.o 44 libperf-gtk.so <- gtk-in.o libperf-in.o
45 perf <- perf-in.o libperf-in.o 45 perf <- perf-in.o libperf-in.o
46 46
47 47
48 NOTE this description is omitting other librar 48 NOTE this description is omitting other libraries involved, only
49 focusing on build framework outcomes 49 focusing on build framework outcomes
50 <<
51 3) Build with ASan or UBSan <<
52 ========================== <<
53 $ cd tools/perf <<
54 $ make DESTDIR=/usr <<
55 $ make DESTDIR=/usr install <<
56 <<
57 AddressSanitizer (or ASan) is a GCC feature th <<
58 such as buffer overflows and memory leaks. <<
59 <<
60 $ cd tools/perf <<
61 $ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame <<
62 $ ASAN_OPTIONS=log_path=asan.log ./perf reco <<
63 <<
64 ASan outputs all detected issues into a log fi <<
65 <<
66 UndefinedBehaviorSanitizer (or UBSan) is a fas <<
67 supported by GCC. UBSan detects undefined beha <<
68 <<
69 $ cd tools/perf <<
70 $ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame <<
71 $ UBSAN_OPTIONS=print_stacktrace=1 ./perf re <<
72 <<
73 If UBSan detects any problem at runtime, it ou <<
74 <<
75 4) Cross compilation <<
76 ==================== <<
77 As Multiarch is commonly supported in Linux di <<
78 libraries for multiple architectures on the sa <<
79 Linux perf. For example, Aarch64 libraries and <<
80 an x86_64 machine, allowing us to compile perf <<
81 <<
82 Below is the command for building the perf wit <<
83 <<
84 $ cd /path/to/Linux <<
85 $ make ARCH=arm64 CROSS_COMPILE=aarch64-linu <<
86 <<
87 For static linking, the option `LDFLAGS="-stat <<
88 <<
89 $ make ARCH=arm64 CROSS_COMPILE=aarch64-linu <<
90 LDFLAGS="-static" -C tools/perf <<
91 <<
92 In the embedded system world, a use case is to <<
93 configuration paths for cross building: <<
94 <<
95 $ PKG_CONFIG_SYSROOT_DIR="/path/to/cross/bui <<
96 PKG_CONFIG_LIBDIR="/usr/lib/:/usr/local/li <<
97 make ARCH=arm64 CROSS_COMPILE=aarch64-linu <<
98 <<
99 In this case, the variable PKG_CONFIG_SYSROOT_ <<
100 variable PKG_CONFIG_LIBDIR or PKG_CONFIG_PATH <<
101 the library paths for cross compilation. <<
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