30 Oct, 2015
1 commit
-
Any CFLAGS or LDFLAGS set by the user need to be passed to the feature
build command. This many include for example -I or -L to point to
libraries and include files in custom paths.In most of the test-*.bin rules in build/feature/Makefile, we use the BUILD
macro which always sends in CFLAGS and LDFLAGS. The libiberty build line
however doesn't use the BUILD macro and thus needs to send in CFLAGS and
LDFLAGS explicitly. Without this, when using custom CFLAGS/LDFLAGS, libiberty
fails to be detected and the perf link fails with something like:LINK perf
libbfd.a(bfd.o): In function `bfd_errmsg':
bfd.c:(.text+0x168): undefined reference to `xstrerror'
bbfd.a(opncls.o): In function `_bfd_new_bfd':
opncls.c:(.text+0xe8): undefined reference to `objalloc_create'
...Signed-off-by: Rabin Vincent
Acked-by: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Rabin Vincent
Link: http://lkml.kernel.org/r/1446104978-26429-2-git-send-email-rabin.vincent@axis.com
Signed-off-by: Arnaldo Carvalho de Melo
28 Oct, 2015
1 commit
-
By adding libbpf into perf's Makefile, this patch enables perf to build
libbpf if libelf is found and neither NO_LIBELF nor NO_LIBBPF is set.The newly introduced code is similar to how libapi and libtraceevent
are wired into Makefile.perf.MANIFEST is also updated for 'make perf-*-src-pkg'.
Append make_no_libbpf to tools/perf/tests/make.
The 'bpf' feature check is appended into default FEATURE_TESTS and
FEATURE_DISPLAY, so perf will check the API version of bpf in
/path/to/kernel/include/uapi/linux/bpf.h. Which should not fail except
when we are trying to port this code to an old kernel.Error messages are also updated to notify users about the lack of BPF
support in 'perf record' if libelf is missing or the BPF API check
failed.tools/lib/bpf is added to TAG_FOLDERS to allow us to navigate libbpf
files when working on perf using tools/perf/tags.Signed-off-by: Wang Nan
Acked-by: Alexei Starovoitov
Cc: Brendan Gregg
Cc: Daniel Borkmann
Cc: David Ahern
Cc: He Kuang
Cc: Jiri Olsa
Cc: Kaixu Xia
Cc: Masami Hiramatsu
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Zefan Li
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1444826502-49291-2-git-send-email-wangnan0@huawei.com
[ Document NO_LIBBPF in Makefile.perf, noted by Jiri Olsa ]
Signed-off-by: Arnaldo Carvalho de Melo
20 Oct, 2015
1 commit
-
Commit 7c422f5572667fef0db38d2046ecce69dcf0afc8 ("tools build: Build
fixdep helper from perf and basic libs") dynamically creates fixdep
during the perf building. Add it to .gitignore.Signed-off-by: Yunlong Song
Cc: Adrian Hunter
Cc: Alexei Starovoitov
Cc: David Ahern
Cc: Jiri Olsa
Cc: Kan Liang
Cc: Masami Hiramatsu
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Wang Nan
Fixes: 7c422f557266 ("tools build: Build fixdep helper from perf and basic libs")
Link: http://lkml.kernel.org/r/1444899116-8220-1-git-send-email-yunlong.song@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo
13 Oct, 2015
1 commit
-
He Kuang the new fixdep tool breaks cross compiling. The reason is it
wouldn't get compiled under host arch, but under cross arch and failed
to run.We need to add support for host side tools build, meanwhile disabling
fixdep usage for cross arch builds.Reported-by: He Kuang
Signed-off-by: Jiri Olsa
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Wang Nan
Link: http://lkml.kernel.org/r/20151013124358.GB9467@krava.brq.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo
29 Sep, 2015
6 commits
-
Adding the fixdep target into the Makefile.include to ease up building of
fixdep helper, that needs to be built before we dive in to the build itself.
The user can invoke the fixdep target to build the helper.Signed-off-by: Jiri Olsa
Cc: David Ahern
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1443004442-32660-8-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Making the fixdep helper to be invoked within dep-cmd.
Each user of the build framework needs to make sure fixdep exists before
executing the build itself.If the build doesn't find fixdep, it falls back to the old style
dependency tracking.Signed-off-by: Jiri Olsa
Cc: David Ahern
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1443004442-32660-6-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
So it's easier to add more functionality in the following commit.
Signed-off-by: Jiri Olsa
Cc: David Ahern
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1443004442-32660-5-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
For dependency tracking we currently use targets that fall out of the
gcc -MD command. We store this info in the .cmd file and include as
makefile during the build.This format put object as target and all the c and header files as
dependencies, like:util/abspath.o: util/abspath.c /usr/include/stdc-predef.h util/cache.h \
/usr/include/bits/wordsize.h /usr/include/gnu/stubs.h \
...If any of those dependency header files (krava.h below) is removed the
build fails on:make[1]: *** No rule to make target 'krava.h', needed by 'inc.o'. Stop.
This patch adds fixdep helper, that is used by kbuild to alter the shape
of the object dependencies like:source_util/abspath.o := util/abspath.c
deps_util/abspath.o := \
/usr/include/stdc-predef.h \
util/cache.h \
...util/abspath.o: $(deps_util/abspath.o)
$(deps_util/abspath.o):
With this format the header removal won't make the build fail, because
it'll be picked up by the last empty target defined for each header.As previously mentioned the fixdep tool is taken from kbuild. It's not
complete backport, only the part that alters the standard dependency
info was taken, the part that adds the CONFIG_* dependency logic will be
probably taken later on.Signed-off-by: Jiri Olsa
Cc: David Ahern
Cc: Kai Germaschewski
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1443004442-32660-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The current build framework fails to cope with header file removal. The
reason is that the removed header file stays in the .cmd file target
rule and forces the build to fail.This issue is fixed and explained in the following patches.
Adding a new build test that simulates header removal.
Signed-off-by: Jiri Olsa
Cc: David Ahern
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1443004442-32660-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
To ease up build framework code setup for users.
More shared code will be added in the following patches.
Signed-off-by: Jiri Olsa
Cc: David Ahern
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1443004442-32660-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
22 Sep, 2015
2 commits
-
We will use the tools/build/ autodetection in the eBPF patchkit
and it is currently sharing the output directory with perf, that
also uses the feature detection logic.As we keep state in the output directory, so that we can avoid running
all the tests again, we need to have different filenames for the files
used in this state, allow doing that via the FEATURE_USER variable, to
be set alongside the existing FEATURE_{TEST,DISPLAY} variables.v2: Fix comment describing the FEATURE_DUMP filename to make sure where
it is created, precisely at $(OUTPUT)FEATURE-DUMP$(FEATURE_USER).
Pointed out by Jiri.Acked-by: Jiri Olsa
Cc: Alexei Starovoitov
Cc: Adrian Hunter
Cc: Borislav Petkov
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc: Stephane Eranian
Cc: Wang Nan
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/n/tip-fdbev0vrn3x6idqc3ajbnvcb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Cut'n'paste mistake, it should eval the name of the function
defined right next to it, in the next line, fix it.Before:
$ make -C tools/lib/bpf/
make: Entering directory '/home/git/linux/tools/lib/bpf'Auto-detecting system features:
... libelf: [ on ]
... libelf-getphdrnum: [ on ]
... libelf-mmap: [ on ]
... bpf: [ on ]
After:
$ make -C tools/lib/bpf/
make: Entering directory '/home/git/linux/tools/lib/bpf'Auto-detecting system features:
... libelf: [ on ]
... libelf-getphdrnum: [ OFF ]
... libelf-mmap: [ OFF ]
... bpf: [ on ]
Acked-by: Jiri Olsa
Cc: Adrian Hunter
Cc: Alexei Starovoitov
Cc: Borislav Petkov
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc: Stephane Eranian
Cc: Wang Nan
Cc: pi3orama@163.com
Fixes: 58d4f00ff13f ("perf build: Fix feature_check name clash")
Link: http://lkml.kernel.org/n/tip-dzu1c4sruukgfq5d5b1c4r30@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
18 Sep, 2015
2 commits
-
The auxtrace code needed by Intel PT uses the __get_cpuid() gcc builtin,
that is not present in old systems, breaking the build.Add a test to check for that builtin and disable AUXTRACE in those
systems.[acme@rhel5 linux]$ make NO_LIBPERL=1 -C tools/perf O=/tmp/build/perf install-bin
make: Entering directory `/home/acme/git/linux/tools/perf'
BUILD: Doing 'make -j2' parallel buildAuto-detecting system features:
... lzma: [ on ]
... get_cpuid: [ OFF ]
config/Makefile:630: Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc
MKDIR /tmp/build/perf/util/
This fixes the build on old systems such as RHEL/CentOS 5.11.
Cc: Adrian Hunter
Cc: Borislav Petkov
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: "Naveen N. Rao"
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: Stephane Eranian
Cc: Victor Kamensky
Cc: Vinson Lee
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-d4puslul0jltoodzpx9r4sje@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
The existing numa test checks only if numa.h and numa_available() are
present, but that can be satisfied with an old libnuma that is not
enough for the 'perf bench numa' entry, so add a test to check for that:[acme@rhel5 linux]$ make NO_AUXTRACE=1 NO_LIBPERL=1 -C tools/perf O=/tmp/build/perf install-bin
make: Entering directory `/home/acme/git/linux/tools/perf'
BUILD: Doing 'make -j2' parallel buildAuto-detecting system features:
... libelf: [ on ]
... libnuma: [ on ]
... numa_num_possible_cpus: [ OFF ]
... libperl: [ on ]
config/Makefile:577: Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8
INSTALL binaries
This fixes the build on old systems such as RHEL/CentOS 5.11.
Cc: Adrian Hunter
Cc: Borislav Petkov
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: "Naveen N. Rao"
Cc: Peter Zijlstra
Cc: Srikar Dronamraju
Cc: Stephane Eranian
Cc: Victor Kamensky
Cc: Vinson Lee
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-zqriqkezppi2de2iyjin1tnc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
26 Aug, 2015
1 commit
-
It's sometimes useful to specify the object affiliation to multiple
config options like:libperf-$(CONFIG_X86) += tsc.o
libperf-$(CONFIG_AUXTRACE) += tsc.owhile the object itself is linked only once. Adding the support for this
and ignoring duplicate objects in the object list.Suggested-by: Arnaldo Carvalho de Melo
Signed-off-by: Jiri Olsa
Cc: Adrian Hunter
Cc: Sukadev Bhattiprolu
Link: http://lkml.kernel.org/r/20150826130103.GF22670@krava.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo
17 Aug, 2015
1 commit
-
Add support for decoding instructions for Intel Processor Trace. The
kernel x86 instruction decoder is copied for this.This essentially provides intel_pt_get_insn() which takes a binary
buffer, uses the kernel's x86 instruction decoder to get details of the
instruction and then categorizes it for consumption by an Intel PT
decoder.Signed-off-by: Adrian Hunter
Cc: Jiri Olsa
Link: http://lkml.kernel.org/r/1439450095-30122-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo
14 Aug, 2015
1 commit
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The Fedora 22 version of libdw requires a couple of extra libraries to
link. With a dynamic link the dependencies are pulled in automatically,
but this doesn't work for static linking. Add the needed libraries
explicitely to the feature probe and the Makefile.v2: Explicitly check for static linking and only add the dependencies
when -static is set. This is to avoid regressions on Arnaldo's system.Signed-off-by: Andi Kleen
Cc: Jiri Olsa
Link: http://lkml.kernel.org/r/1439419717-20601-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo
07 Aug, 2015
1 commit
-
This is the first patch of libbpf. The goal of libbpf is to create a
standard way for accessing eBPF object files. This patch creates
'Makefile' and 'Build' for it, allows 'make' to build libbpf.a and
libbpf.so, 'make install' to put them into proper directories.
Most part of Makefile is borrowed from traceevent.Before building, it checks the existence of libelf in Makefile, and deny
to build if not found. Instead of throwing an error if libelf not found,
the error raises in a phony target "elfdep". This design is to ensure
'make clean' still workable even if libelf is not found.Because libbpf requires 'kern_version' field set for 'union bpf_attr'
(bpfdep" is used for that dependency), Kernel BPF API is also checked
by intruducing a new feature check 'bpf' into tools/build/feature,
which checks the existence and version of linux/bpf.h. When building
libbpf, it searches that file from include/uapi/linux in kernel source
tree (controlled by FEATURE_CHECK_CFLAGS-bpf). Since it searches kernel
source tree it reside, installing of newest kernel headers is not
required, except we are trying to port these files to an old kernel.To avoid checking that file when perf building, the newly introduced
'bpf' feature check doesn't added into FEATURE_TESTS and
FEATURE_DISPLAY by default in tools/build/Makefile.feature, but added
into libbpf's specific.Signed-off-by: Wang Nan
Acked-by: Alexei Starovoitov
Cc: Brendan Gregg
Cc: Daniel Borkmann
Cc: David Ahern
Cc: He Kuang
Cc: Jiri Olsa
Cc: Kaixu Xia
Cc: Masami Hiramatsu
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Zefan Li
Bcc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1435716878-189507-4-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo
06 Aug, 2015
1 commit
-
linux/tools$ make ARCH=mips CROSS_COMPILE=mipsel-linux- perf
...
config/Makefile:256: *** No gnu/libc-version.h found, please install
glibc-dev[el]. Stop.
make[1]: *** [all] Error 2
make: *** [perf] Error 2...
In file included from builtin-sched.c:13:0:
util/cloexec.h:8:12: error: redundant redeclaration of ‘sched_getcpu’
[-Werror=redundant-decls]
extern int sched_getcpu(void) __THROW;mipsel-buildroot-linux-uclibc/sysroot/usr/include/bits/sched.h:88:12:
note: previous declaration of ‘sched_getcpu’ was here
extern int sched_getcpu (void) __THROW;uclibc info:
sysroot/usr/include/bits/uClibc_config.h
__UCLIBC_MAJOR__ 0
__UCLIBC_MINOR__ 9
__UCLIBC_SUBLEVEL__ 33sysroot/usr/include/features.h
__UCLIBC__ 1
__GLIBC__ 2
__GLIBC_MINOR__ 2Signed-off-by: Petri Gynther
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1438735081-24131-1-git-send-email-pgynther@google.com
Signed-off-by: Arnaldo Carvalho de Melo
02 Jul, 2015
1 commit
-
Create config.detected into OUTPUT directory instead of source
directory.This fixes parallel builds that share the same source directory.
Signed-off-by: Aaro Koskinen
Acked-by: Jiri Olsa
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1435751683-18500-1-git-send-email-aaro.koskinen@nokia.com
Signed-off-by: Arnaldo Carvalho de Melo
23 Jun, 2015
1 commit
-
Pull perf fixes from Ingo Molnar:
"These are the left over fixes from the v4.1 cycle"* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Fix build breakage if prefix= is specified
perf/x86: Honor the architectural performance monitoring version
perf/x86/intel: Fix PMI handling for Intel PT
perf/x86/intel/bts: Fix DS area sharing with x86_pmu events
perf/x86: Add more Broadwell model numbers
perf: Fix ring_buffer_attach() RCU sync, again
20 Jun, 2015
1 commit
-
Invoking Makefile.perf with prefix= breaks the build since Makefile.perf
hands that variable down to Makefile.build where it overridesprefix := $(subst ./,,$(OUTPUT)$(dir)/)
leading to errors like this:
No rule to make target '/usrabspath.o', needed by '/usrlibperf-in.o'
Signed-off-by: Lukas Wunner
Acked-by: Jiri Olsa
Cc: David Ahern
Fixes: c819e2cf2eb6f65d3208d195d7a0edef6108d5
Link: http://lkml.kernel.org/r/5582c48a.84a22b0a.a918.5285SMTPIN_ADDED_MISSING@mx.google.com
Signed-off-by: Arnaldo Carvalho de Melo
29 May, 2015
1 commit
-
Allow nesting into directories without Build file. Currently we force
include of the Build file, which fails the build when the Build file is
missing.We already support empty *-in.o' objects if there's nothing in the
directory to be compiled, so we can just use it for missing Build file
cases.Also adding this case under tests.
Reported-by: Rabin Vincent
Signed-off-by: Jiri Olsa
Cc: David Ahern
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Rabin Vincent
Link: http://lkml.kernel.org/r/1432914178-24086-1-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
18 May, 2015
1 commit
-
Replace strong binding of FEATURE_TESTS and FEATURE_DISPLAY by weak
binding. This patch enables other makefiles which include
tools/build/Makefile.feature enable only limited feathres to check.Signed-off-by: Wang Nan
Acked-by: Jiri Olsa
Cc: Alexei Starovoitov
Cc: Brendan Gregg
Cc: Daniel Borkmann
Cc: David Ahern
Cc: Ingo Molnar
Cc: Masami Hiramatsu
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: pi3orama@163.com
Cc: Zefan Li
Link: http://lkml.kernel.org/r/1431860222-61636-5-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo
22 Mar, 2015
2 commits
-
Will be used to decompress 'xz' objects. The check detects
the liblzma.so devel library normally delivered by xz package.Signed-off-by: Jiri Olsa
Acked-by: Namhyung Kim
Cc: Adrian Hunter
Cc: Arnaldo Carvalho de Melo
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian -
Moving feature checks code under tools/build directory.
Changing also $feature_dir to point to new feature directory location
and perf Makefiles to include Makefile.feature from new location.Signed-off-by: Jiri Olsa
Cc: Corey Ashford
Cc: David Ahern
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/n/tip-3lamtb30dhf4wo99y1n8kxg0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
13 Feb, 2015
2 commits
-
Get more verbose output wrt displaying executed commands from make.
Signed-off-by: Jiri Olsa
Tested-by: Sukadev Bhattiprolu
Tested-by: Will Deacon
Cc: Alexis Berlemont
Cc: Borislav Petkov
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-68v67h59zoz7ilb1ggcuff3j@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Add support to build single targets, like:
$ make util/map.o # objects
$ make util/map.i # preprocessor
$ make util/map.s # assemblySigned-off-by: Jiri Olsa
Tested-by: Sukadev Bhattiprolu
Tested-by: Will Deacon
Cc: Alexis Berlemont
Cc: Borislav Petkov
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-tt10y0dmweq6rjaod937rpb4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
12 Feb, 2015
4 commits
-
Move the util objects building under build framework.
Add the new libperf build object so it's separated from the rest of the
perf code and could be librarized.Signed-off-by: Jiri Olsa
Tested-by: Sukadev Bhattiprolu
Tested-by: Will Deacon
Cc: Alexis Berlemont
Cc: Borislav Petkov
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-574tgt9t23tnxo9td8qjiibc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Add support to make directory any time we build objects out of the tree
(O=/tmp/krava) and the output directory does not exist.Signed-off-by: Jiri Olsa
Tested-by: Sukadev Bhattiprolu
Tested-by: Will Deacon
Cc: Alexis Berlemont
Cc: Borislav Petkov
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-h80ukls4o2kpr0e4c4bfln6u@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Adding support to include detected configuration makefile into the build
process. This will allow the Build objects to be configurable based on
the config data, like:perf-$(CONFIG_KRAVA) += krava.o
The configuration is stored in '.config-detected' file, which is
generated for each compilation.Signed-off-by: Jiri Olsa
Tested-by: Sukadev Bhattiprolu
Tested-by: Will Deacon
Cc: Alexis Berlemont
Cc: Borislav Petkov
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-bl8qho0ubck7aqrbbfu9inlm@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Adding new build framework into 'tools/build' to be used by tools.
There's no change for actual building at this point, it comes in the
next patches.The idea and more details are explained in the
'tools/build/Documentation/Build.txt' file.I adopted everything from the kernel build system, with some changes to
allow for multiple binaries build definitions.While the kernel's build output is single image (forget modules) we need
to be able to build several binaries/libraries.The basic idea is that sser provides 'Build' files with objects
definitions like:perf-y += a.o
perf-y += b.o
libperf-y += c.o
libperf-y += d.oand the build framework outputs files:
perf-in.o # a.o, b.o compiled in
libperf-in.o # c.o, d.o compiled inSigned-off-by: Jiri Olsa
Tested-by: Sukadev Bhattiprolu
Tested-by: Will Deacon
Cc: Alexis Berlemont
Cc: Borislav Petkov
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-fbj22h4av0otlxupwcmrxgpa@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo