Changes in Build.include

4a73aff8 - perf tools: Create generic syscall table support

Thu, 09 Jan 2025 02:36:16 +0000

perf tools: Create generic syscall table supportCurrently each architecture in perf independently generates syscallheaders.Adapt the work that has gone into unifying syscall headerimplementations in the kernel to work with perf tools.Introduce this framework with riscv at first. riscv previously relied onlibaudit, but with this change, perf tools for riscv no longer needsthis external dependency.Signed-off-by: Charlie Jenkins Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Arnd Bergmann Cc: Christian Brauner Cc: Guo Ren Cc: Günther Noack Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Jonathan Corbet Cc: Leo Yan Cc: Mark Rutland Cc: Mickaël Salaün Cc: Mike Leach Cc: Namhyung Kim Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Will Deacon Link: https://lore.kernel.org/r/20250108-perf_syscalltbl-v6-1-7543b5293098@rivosinc.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/Build.include

c77a78c2 - tools build: Enable warnings through HOSTCFLAGS

Fri, 29 Oct 2021 16:30:41 +0000

tools build: Enable warnings through HOSTCFLAGSThe tools build system uses KBUILD_HOSTCFLAGS symbol for obvious purposes.However this is not set for anything under tools/As such, host tools apps built have no compiler warnings enabled.Declare HOSTCFLAGS for perf tools build, and also use that symbol indeclaration of host_c_flags. HOSTCFLAGS comes from EXTRA_WARNINGS, whichis independent of target platform/arch warning flags.Suggested-by: Jiri Olsa Signed-off-by: John Garry Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Ian Rogers Cc: Ingo Molnar Cc: Laura Abbott Cc: Masahiro Yamada Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/1635525041-151876-1-git-send-email-john.garry@huawei.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/Build.include

b61442df - tools: do not include scripts/Kbuild.include

Fri, 16 Apr 2021 13:00:51 +0000

tools: do not include scripts/Kbuild.includeSince commit 57fd251c7896 ("kbuild: split cc-option and friends toscripts/Makefile.compiler"), some kselftests fail to build.The tools/ directory opted out Kbuild, and went in a differentdirection. People copied scripts and Makefiles to the tools/ directoryto create their own build system.tools/build/Build.include mimics scripts/Kbuild.include, but sometool Makefiles include the Kbuild one to import a feature that ismissing in tools/build/Build.include: - Commit ec04aa3ae87b ("tools/thermal: tmon: use "-fstack-protector" only if supported") included scripts/Kbuild.include from tools/thermal/tmon/Makefile to import the cc-option macro. - Commit c2390f16fc5b ("selftests: kvm: fix for compilers that do not support -no-pie") included scripts/Kbuild.include from tools/testing/selftests/kvm/Makefile to import the try-run macro. - Commit 9cae4ace80ef ("selftests/bpf: do not ignore clang failures") included scripts/Kbuild.include from tools/testing/selftests/bpf/Makefile to import the .DELETE_ON_ERROR target. - Commit 0695f8bca93e ("selftests/powerpc: Handle Makefile for unrecognized option") included scripts/Kbuild.include from tools/testing/selftests/powerpc/pmu/ebb/Makefile to import the try-run macro.Copy what they need into tools/build/Build.include, and make theminclude it instead of scripts/Kbuild.include.Link: https://lore.kernel.org/lkml/86dadf33-70f7-a5ac-cb8c-64966d2f45a1@linux.ibm.com/Fixes: 57fd251c7896 ("kbuild: split cc-option and friends to scripts/Makefile.compiler")Reported-by: Janosch Frank Reported-by: Christian Borntraeger Signed-off-by: Masahiro Yamada Tested-by: Christian Borntraeger Acked-by: Yonghong Song List of files: /linux-6.15/tools/build/Build.include

a278f3d8 - tools, build: Propagate build failures from tools/build/Makefile.build

Fri, 31 Jul 2020 02:42:44 +0000

tools, build: Propagate build failures from tools/build/Makefile.buildThe '&&' command seems to have a bad effect when $(cmd_$(1)) exits withnon-zero effect: the command failure is masked (despite `set -e`) and all butthe first command of $(dep-cmd) is executed (successfully, as they are mostlyprintfs), thus overall returning 0 in the end.This means in practice that despite compilation errors, tools's build Makefilewill return success. We see this very reliably with libbpf's Makefile, whichdoesn't get compilation error propagated properly. This in turns causes issueswith selftests build, as well as bpftool and other projects that rely onbuilding libbpf.The fix is simple: don't use &&. Given `set -e`, we don't need to chaincommands with &&. The shell will exit on first failure, giving desiredbehavior and propagating error properly.Fixes: 275e2d95591e ("tools build: Move dependency copy into function")Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/20200731024244.872574-1-andriin@fb.com List of files: /linux-6.15/tools/build/Build.include

96f14fe7 - kbuild: Rename HOSTCFLAGS to KBUILD_HOSTCFLAGS

Tue, 10 Jul 2018 00:45:58 +0000

kbuild: Rename HOSTCFLAGS to KBUILD_HOSTCFLAGSIn preparation for enabling command line CFLAGS, re-name HOSTCFLAGS toKBUILD_HOSTCFLAGS as the internal use only flags. This should not haveany visible effects.Signed-off-by: Laura Abbott Signed-off-by: Masahiro Yamada List of files: /linux-6.15/tools/build/Build.include

6fdbd824 - tools: build: Fixup host c flags

Tue, 10 Jul 2018 00:45:56 +0000

tools: build: Fixup host c flagsCommit 0c3b7e42616f ("tools build: Add support for host programs format")introduced host_c_flags which referenced CHOSTFLAGS. The actual name of thevariable is HOSTCFLAGS. Fix this up.Fixes: 0c3b7e42616f ("tools build: Add support for host programs format")Signed-off-by: Laura Abbott Acked-by: Jiri Olsa Signed-off-by: Masahiro Yamada List of files: /linux-6.15/tools/build/Build.include

9feeb638 - tools build: fix # escaping in .cmd files for future Make

Tue, 05 Jun 2018 17:00:22 +0000

tools build: fix # escaping in .cmd files for future MakeIn 2016 GNU Make made a backwards incompatible change to the way '#'characters were handled in Makefiles when used inside functions ormacros:http://git.savannah.gnu.org/cgit/make.git/commit/?id=c6966b323811c37acedff05b57Due to this change, when attempting to run `make prepare' I get aspurious make syntax error: /home/earnest/linux/tools/objtool/.fixdep.o.cmd:1: *** missing separator. Stop.When inspecting `.fixdep.o.cmd' it includes two lines which useunescaped comment characters at the top: \# cannot find fixdep (/home/earnest/linux/tools/objtool//fixdep) \# using basic dep dataThis is because `tools/build/Build.include' prints these '\#'characters: printf '\# cannot find fixdep (%s)\n' $(fixdep) > $(dot-target).cmd; \ printf '\# using basic dep data\n\n' >> $(dot-target).cmd; \This completes commit 9564a8cf422d ("Kbuild: fix # escaping in .cmd filesfor future Make").Link: https://bugzilla.kernel.org/show_bug.cgi?id=197847Cc: Randy Dunlap Cc: Rasmus Villemoes Cc: stable@vger.kernel.orgSigned-off-by: Paul Menzel Signed-off-by: Masahiro Yamada List of files: /linux-6.15/tools/build/Build.include

9564a8cf - Kbuild: fix # escaping in .cmd files for future Make

Sun, 08 Apr 2018 21:35:28 +0000

Kbuild: fix # escaping in .cmd files for future MakeI tried building using a freshly built Make (4.2.1-69-g8a731d1), butalready the objtool build broke withorc_dump.c: In function ‘orc_dump’:orc_dump.c:106:2: error: ‘elf_getshnum’ is deprecated [-Werror=deprecated-declarations] if (elf_getshdrnum(elf, &nr_sections)) {Turns out that with that new Make, the backslash was not removed, so cppdidn't see a #include directive, grep found nothing, and-DLIBELF_USE_DEPRECATED was wrongly put in CFLAGS.Now, that new Make behaviour is documented in their NEWS file: * WARNING: Backward-incompatibility! Number signs (#) appearing inside a macro reference or function invocation no longer introduce comments and should not be escaped with backslashes: thus a call such as: foo := $(shell echo '#') is legal. Previously the number sign needed to be escaped, for example: foo := $(shell echo '\#') Now this latter will resolve to "\#". If you want to write makefiles portable to both versions, assign the number sign to a variable: C := \# foo := $(shell echo '$C') This was claimed to be fixed in 3.81, but wasn't, for some reason. To detect this change search for 'nocomment' in the .FEATURES variable.This also fixes up the two make-cmd instances to replace # with $(pound)rather than with \#. There might very well be other places that needsimilar fixup in preparation for whatever future Make release containsthe above change, but at least this builds an x86_64 defconfig with thenew make.Link: https://bugzilla.kernel.org/show_bug.cgi?id=197847Cc: Randy Dunlap Signed-off-by: Rasmus Villemoes Signed-off-by: Masahiro Yamada List of files: /linux-6.15/tools/build/Build.include

2fedf79b - tools build: Move tabs to spaces where suitable

Sun, 04 Dec 2016 20:42:53 +0000

tools build: Move tabs to spaces where suitableWe've been hit several times by a Makefile bug where line indented bytab was falsely considered as target command.We prevent this by always using space indentation for everything exceptfor the target commands.Signed-off-by: Jiri Olsa Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1480884178-8072-3-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/Build.include

a5ba0a1a - tools build: Make the .cmd file more readable

Sun, 04 Dec 2016 20:42:52 +0000

tools build: Make the .cmd file more readablePutting extra line between dependencies and cmd_* definitionto make it more readable.Before: $ cat .builtin-top.o.cmd ... /home/jolsa/kernel/linux-perf/tools/include/linux/stringify.h \ /home/jolsa/kernel/linux-perf/tools/include/linux/time64.h cmd_builtin-top.o := gcc -Wp,-MD,./.builtin-top.o.d -Wp,-MT,builtin-... ...After: $ cat .builtin-top.o.cmd ... /home/jolsa/kernel/linux-perf/tools/include/linux/stringify.h \ /home/jolsa/kernel/linux-perf/tools/include/linux/time64.h cmd_builtin-top.o := gcc -Wp,-MD,./.builtin-top.o.d -Wp,-MT,builtin-... ...Signed-off-by: Jiri Olsa Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1480884178-8072-2-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/Build.include

baa1973e - tools build: Fix objtool build with clang

Mon, 28 Nov 2016 02:43:46 +0000

tools build: Fix objtool build with clangClang doesn't support multiple arguments being passed to -Wp, so splitthem. Fixes this error: HOSTCC tools/objtool/fixdep.o cat: tools/objtool/.fixdep.o.d: No such file or directorySigned-off-by: Peter Foley Tested-by: Arnaldo Carvalho de Melo Acked-by: Jiri Olsa Cc: Wang Nan Link: http://lkml.kernel.org/r/20161128024346.17371-1-pefoley2@pefoley.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/Build.include

2ec8107d - tools build: Add CFLAGS_REMOVE_* support

Wed, 02 Nov 2016 13:35:47 +0000

tools build: Add CFLAGS_REMOVE_* supportAdding support to remove options from final CFLAGS for both object fileand build target. It's now possible to remove CFLAGS options like: CFLAGS_REMOVE_krava.o += -Wstrict-prototypesCommitter notes:This comes from the kernel's kbuild infrastructure, the subset that issupported in tools/ is being documented at tools/build/Documentation/Build.txt.Signed-off-by: Jiri Olsa Tested-by: Stephane Eranian Cc: Andi Kleen Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Cc: William Cohen Link: http://lkml.kernel.org/r/1478093749-5602-2-git-send-email-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/Build.include

f61bdc33 - tools build: Support compiling C++ source file

Mon, 26 Sep 2016 07:26:55 +0000

tools build: Support compiling C++ source fileAdd new rule to compile .cpp file to .o use g++. C++ support is requiredfor built-in clang and LLVM support.Linker side support will be introduced by following commits.Signed-off-by: Wang Nan Cc: Alexei Starovoitov Cc: He Kuang Cc: Jiri Olsa Cc: Zefan Li Cc: pi3orama@163.comLink: http://lkml.kernel.org/r/1474874832-134786-2-git-send-email-wangnan0@huawei.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/Build.include

0c3b7e42 - tools build: Add support for host programs format

Tue, 27 Sep 2016 14:18:46 +0000

tools build: Add support for host programs formatIn some cases, like for fixdep and shortly for jevents, we need to build a toolto run on the host that will be used in building a tool, such as perf, that isbeing cross compiled, so do like the kernel and provide HOSTCC, HOSTLD and HOSTARto do that.Signed-off-by: Jiri Olsa Requested-by: Andi Kleen Requested-and-Tested-by: Arnaldo Carvalho de Melo Cc: Madhavan Srinivasan Cc: Peter Zijlstra Cc: Sukadev Bhattiprolu Cc: linuxppc-dev@lists.ozlabs.orgLink: http://lkml.kernel.org/r/20160927141846.GA6589@kravaSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/Build.include

9fb81323 - tools build: Make the fixdep helper part of the build process

Wed, 23 Sep 2015 10:34:00 +0000

tools build: Make the fixdep helper part of the build processMaking the fixdep helper to be invoked within dep-cmd.Each user of the build framework needs to make sure fixdep exists beforeexecuting the build itself.If the build doesn't find fixdep, it falls back to the old styledependency 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.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/Build.include

275e2d95 - tools build: Move dependency copy into function

Wed, 23 Sep 2015 10:33:59 +0000

tools build: Move dependency copy into functionSo 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.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/Build.include

c819e2cf - tools build: Add new build support

Mon, 29 Dec 2014 12:51:45 +0000

tools build: Add new build supportAdding new build framework into 'tools/build' to be used by tools.There's no change for actual building at this point, it comes in thenext 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 toallow for multiple binaries build definitions.While the kernel's build output is single image (forget modules) we needto be able to build several binaries/libraries.The basic idea is that sser provides 'Build' files with objectsdefinitions 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.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/Build.include