Commit f819f703 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo

perf build: Add build documentation

Adding file describing the basics of perf build process.
Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Tested-by: default avatarSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Tested-by: default avatarWill Deacon <will.deacon@arm.com>
Cc: Alexis Berlemont <alexis.berlemont@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ibgf7vxyduwohlqqfayl11xb@git.kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent db848662
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1) perf build
=============
The perf build process consists of several separated building blocks,
which are linked together to form the perf binary:
- libperf library (static)
- perf builtin commands
- traceevent library (static)
- GTK ui library
Several makefiles govern the perf build:
- Makefile
top level Makefile working as a wrapper that calls the main
Makefile.perf with a -j option to do parallel builds.
- Makefile.perf
main makefile that triggers build of all perf objects including
installation and documentation processing.
- tools/build/Makefile.build
main makefile of the build framework
- tools/build/Build.include
build framework generic definitions
- Build makefiles
makefiles that defines build objects
Please refer to tools/build/Documentation/Build.txt for more
information about build framework.
2) perf build
=============
The Makefile.perf triggers the build framework for build objects:
perf, libperf, gtk
resulting in following objects:
$ ls *-in.o
gtk-in.o libperf-in.o perf-in.o
Those objects are then used in final linking:
libperf-gtk.so <- gtk-in.o libperf-in.o
perf <- perf-in.o libperf-in.o
NOTE this description is omitting other libraries involved, only
focusing on build framework outcomes
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