Changes in Makefile

814d051e - tools/build: Use SYSTEM_BPFTOOL for system bpftool

Wed, 26 Mar 2025 00:40:18 +0000

tools/build: Use SYSTEM_BPFTOOL for system bpftoolThe feature test for system bpftool uses BPFTOOL as the variable to setits path, defaulting to just "bpftool" if not set by the user.This conflicts with selftests and a few other utilities, which expectBPFTOOL to be set to the in-tree bpftool path by default. For example,bpftool selftests fail to build:$ make -C tools/testing/selftests/bpf/make: Entering directory '/home/tglozar/dev/linux/tools/testing/selftests/bpf'make: *** No rule to make target 'bpftool', needed by '/home/tglozar/dev/linux/tools/testing/selftests/bpf/tools/include/vmlinux.h'. Stop.make: Leaving directory '/home/tglozar/dev/linux/tools/testing/selftests/bpf'Fix the problem by renaming the variable used for system bpftool fromBPFTOOL to SYSTEM_BPFTOOL, so that the new usage does not conflict withthe existing one of BPFTOOL.Cc: John Kacur Cc: Luis Goncalves Link: https://lore.kernel.org/20250326004018.248357-1-tglozar@redhat.comFixes: 8a635c3856dd ("tools/build: Add bpftool-skeletons feature test")Closes: https://lore.kernel.org/linux-kernel/5df6968a-2e5f-468e-b457-fc201535dd4c@linux.ibm.com/Reported-by: Venkat Rao Bagalkote Tested-by: Venkat Rao Bagalkote Suggested-by: Quentin Monnet Acked-by: Quentin Monnet Signed-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) List of files: /linux-6.15/tools/build/feature/Makefile

8a635c38 - tools/build: Add bpftool-skeletons feature test

Tue, 18 Feb 2025 14:58:53 +0000

tools/build: Add bpftool-skeletons feature testAdd bpftool-skeletons feature test, testing the presence of a bpftoolcapable of generating skeletons.This is to be used for tools that do not require building their ownbootstrap bpftool from the kernel source tree.Cc: John Kacur Cc: Luis Goncalves Cc: Gabriele Monaco Cc: Clark Williams Link: https://lore.kernel.org/20250218145859.27762-3-tglozar@redhat.comSigned-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) List of files: /linux-6.15/tools/build/feature/Makefile

3cc550f5 - perf tools: Remove dependency on libaudit

Thu, 09 Jan 2025 02:36:31 +0000

perf tools: Remove dependency on libauditAll architectures now support HAVE_SYSCALL_TABLE_SUPPORT, so the flag isno longer needed. With the removal of the flag, the relatedGENERIC_SYSCALL_TABLE can also be removed.libaudit was only used as a fallback for when HAVE_SYSCALL_TABLE_SUPPORTwas not defined, so libaudit is also no longer needed for anyarchitecture.Signed-off-by: Charlie Jenkins Tested-by: Arnaldo Carvalho de Melo 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-v6-16-7543b5293098@rivosinc.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/feature/Makefile

d557814c - tools build: Add feature test for libelf with ZSTD

Sun, 15 Dec 2024 22:12:21 +0000

tools build: Add feature test for libelf with ZSTDThe macro ELFCOMPRESS_ZSTD defines the compress algorithm, which wasintroduced in the commit ("libelf: Document and make ELFCOMPRESS_ZSTDusable with old system elf.h") of the repository elfutils-0.188-67.Therefore, libelf 0.189 and later versions require to link the libzstdlibrary.Add a test for checking if libelf supports ZSTD algorithm. Pass themacro ELFCOMPRESS_ZSTD as an argument to the elf_compress() function.If the build succeeds, it means the feature is supported.Reviewed-by: Quentin Monnet Signed-off-by: Leo Yan Tested-by: Namhyung Kim Tested-by: Quentin Monnet Acked-by: Andrii Nakryiko Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Alexei Starovoitov Cc: Daniel Borkmann Cc: Eduard Zingerman Cc: Guilherme Amadio Cc: Hao Luo Cc: Ian Rogers Cc: James Clark Cc: John Fastabend Cc: KP Singh Cc: Kan Liang Cc: Martin KaFai Lau Cc: Nick Terrell Cc: Song Liu Cc: Stanislav Fomichev Cc: Yonghong Song Link: https://lore.kernel.org/r/20241215221223.293205-2-leo.yan@arm.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/feature/Makefile

b1ef2559 - tools build feature: Don't set feature-libcap=1 if libcap-devel isn't available

Wed, 11 Dec 2024 19:51:08 +0000

tools build feature: Don't set feature-libcap=1 if libcap-devel isn't availablelibcap isn't tested in the tools/build/feature/test-all.c fast pathfeature detection process, so don't set it as available if test-allmanages to build.There are other users of this feature detection mechanism, and theyexplicitely ask for libcap to be tested, so are not affected by thispatch, for instance, with this patch in place: $ make -C tools/bpf/bpftool/ clean make: Leaving directory '/home/acme/git/perf-tools-next/tools/bpf/bpftool' ⬢ [acme@toolbox perf-tools-next]$ make -C tools/bpf/bpftool/ make: Entering directory '/home/acme/git/perf-tools-next/tools/bpf/bpftool' Auto-detecting system features: ... clang-bpf-co-re: [ on ] ... llvm: [ on ] ... libcap: [ on ] ... libbfd: [ on ] ... libelf-zstd: [ on ] LINK bpftool make: Leaving directory '/home/acme/git/perf-tools-next/tools/bpf/bpftool' $ $ sudo rpm -e libcap-devel $ make -C tools/bpf/bpftool/ make: Entering directory '/home/acme/git/perf-tools-next/tools/bpf/bpftool' Auto-detecting system features: ... clang-bpf-co-re: [ on ] ... llvm: [ on ] ... libcap: [ OFF ] ... libbfd: [ on ] ... libelf-zstd: [ on ] $Reviewed-by: Ian Rogers Acked-by: Quentin Monnet Cc: Adrian Hunter Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Cc: Namhyung Kim Link: https://lore.kernel.org/lkml/20241211224509.797827-3-acme@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/feature/Makefile

26385fd2 - perf build: Combine test-dwarf-getcfi into test-libdw

Thu, 17 Oct 2024 00:13:50 +0000

perf build: Combine test-dwarf-getcfi into test-libdwdwarf_getcfi support in libdw is 15 years old. Make libdw implydwarf_getcfi support and simplify build logic.Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Tested-by: Leo Yan Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.orgCc: linux-riscv@lists.infradead.orgCc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.orgLink: https://lore.kernel.org/r/20241017001354.56973-8-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/build/feature/Makefile

23580d7b - perf build: Combine test-dwarf-getlocations into test-libdw

Thu, 17 Oct 2024 00:13:49 +0000

perf build: Combine test-dwarf-getlocations into test-libdwdwarf_getlocations support in libdw is more than 10 years old. Makelibdw imply dwarf_getlocations support and simplify build logic.Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Tested-by: Leo Yan Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.orgCc: linux-riscv@lists.infradead.orgCc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.orgLink: https://lore.kernel.org/r/20241017001354.56973-7-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/build/feature/Makefile

3034b48a - perf build: Combine libdw-dwarf-unwind into libdw feature tests

Thu, 17 Oct 2024 00:13:48 +0000

perf build: Combine libdw-dwarf-unwind into libdw feature testsSupport in libdw has been present for 10 years so let's simplify thebuild logic with a single feature test.Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Tested-by: Leo Yan Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.orgCc: linux-riscv@lists.infradead.orgCc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.orgLink: https://lore.kernel.org/r/20241017001354.56973-6-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/build/feature/Makefile

7c943261 - perf build: Rename test-dwarf to test-libdw

Thu, 17 Oct 2024 00:13:47 +0000

perf build: Rename test-dwarf to test-libdwBe more intention revealing that the dwarf test is actually testingfor libdw support.Signed-off-by: Ian Rogers Acked-by: Namhyung Kim Cc: Anup Patel Cc: Yang Jihong Cc: Palmer Dabbelt Cc: David S. Miller Cc: Albert Ou Cc: Shenlin Liang Cc: Nick Terrell Cc: Guilherme Amadio Cc: Steinar H. Gunderson Cc: Changbin Du Cc: Alexander Lobakin Cc: Przemek Kitszel Cc: Huacai Chen Cc: Guo Ren Cc: Masahiro Yamada Cc: Masami Hiramatsu (Google) Cc: Will Deacon Cc: James Clark Cc: Mike Leach Cc: Chen Pei Cc: Leo Yan Cc: Oliver Upton Cc: Aditya Gupta Cc: Kajol Jain Cc: Athira Rajeev Cc: linux-arm-kernel@lists.infradead.orgCc: linux-riscv@lists.infradead.orgCc: Bibo Mao Cc: John Garry Cc: Atish Patra Cc: Dima Kogan Cc: Paul Walmsley Cc: Dr. David Alan Gilbert Cc: linux-csky@vger.kernel.orgLink: https://lore.kernel.org/r/20241017001354.56973-5-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/build/feature/Makefile

0f59a6c9 - tools/build: Add libcpupower dependency detection

Thu, 17 Oct 2024 14:09:09 +0000

tools/build: Add libcpupower dependency detectionAdd the ability to detect the presence of libcpupower on a system tothe Makefiles in tools/build.Link: https://lore.kernel.org/20241017140914.3200454-2-tglozar@redhat.comSigned-off-by: Tomas Glozar Signed-off-by: Steven Rostedt (Google) List of files: /linux-6.15/tools/build/feature/Makefile

a530337b - perf build: Fix build feature-dwarf_getlocations fail for old libdw

Thu, 19 Sep 2024 01:35:12 +0000

perf build: Fix build feature-dwarf_getlocations fail for old libdwFor libdw versions below 0.177, need to link libdl.a in addition tolibbebl.a during static compilation, otherwisefeature-dwarf_getlocations compilation will fail.Before: $ make LDFLAGS=-static BUILD: Doing 'make -j20' parallel build Makefile.config:483: Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157 $ cat ../build/feature/test-dwarf_getlocations.make.output /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libebl.a(eblclosebackend.o): in function `ebl_closebackend': (.text+0x20): undefined reference to `dlclose' collect2: error: ld returned 1 exit statusAfter: $ make LDFLAGS=-static Auto-detecting system features: ... dwarf: [ on ] $ ./perf probe Usage: perf probe [] 'PROBEDEF' ['PROBEDEF' ...] or: perf probe [] --add 'PROBEDEF' [--add 'PROBEDEF' ...] or: perf probe [] --del '[GROUP:]EVENT' ... or: perf probe --list [GROUP:]EVENT ... Fixes: 536661da6ea18fe6 ("perf: build: Only link libebl.a for old libdw")Reviewed-by: Leo Yan Signed-off-by: Yang Jihong Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20240919013513.118527-3-yangjihong@bytedance.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/feature/Makefile

43f6564f - perf build: Fix static compilation error when libdw is not installed

Thu, 19 Sep 2024 01:35:11 +0000

perf build: Fix static compilation error when libdw is not installedIf libdw is not installed in build environment, the output of'pkg-config --modversion libdw' is empty, causing LIBDW_VERSION_2 to beempty and the shell test will have the following error: /bin/sh: 1: test: -lt: unexpected operatorBefore: $ pkg-config --modversion libdw Package libdw was not found in the pkg-config search path. Perhaps you should add the directory containing `libdw.pc' to the PKG_CONFIG_PATH environment variable No package 'libdw' found $ make LDFLAGS=-static -j16 BUILD: Doing 'make -j20' parallel build Package libdw was not found in the pkg-config search path. Perhaps you should add the directory containing `libdw.pc' to the PKG_CONFIG_PATH environment variable No package 'libdw' found /bin/sh: 1: test: -lt: unexpected operatorAfter: 1. libdw is not installed: $ pkg-config --modversion libdw Package libdw was not found in the pkg-config search path. Perhaps you should add the directory containing `libdw.pc' to the PKG_CONFIG_PATH environment variable No package 'libdw' found $ make LDFLAGS=-static -j16 BUILD: Doing 'make -j20' parallel build Package libdw was not found in the pkg-config search path. Perhaps you should add the directory containing `libdw.pc' to the PKG_CONFIG_PATH environment variable No package 'libdw' found Makefile.config:473: No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR 2. libdw version is lower than 0.177 $ pkg-config --modversion libdw 0.176 $ make LDFLAGS=-static -j16 BUILD: Doing 'make -j20' parallel build Auto-detecting system features: ... dwarf: [ on ] INSTALL libsubcmd_headers INSTALL libapi_headers INSTALL libperf_headers INSTALL libsymbol_headers INSTALL libbpf_headers LINK perf 3. libdw version is higher than 0.177 $ pkg-config --modversion libdw 0.186 $ make LDFLAGS=-static -j16 BUILD: Doing 'make -j20' parallel build Auto-detecting system features: ... dwarf: [ on ] CC util/bpf-utils.o CC util/pfm.o LD util/perf-util-in.o LD perf-util-in.o AR libperf-util.a LINK perfFixes: 536661da6ea18fe6 ("perf: build: Only link libebl.a for old libdw")Reviewed-by: Leo Yan Signed-off-by: Yang Jihong Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20240919013513.118527-2-yangjihong@bytedance.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/feature/Makefile

332f60ac - perf build: Remove unused feature test target

Tue, 10 Sep 2024 14:04:01 +0000

perf build: Remove unused feature test targetllvm-version was removed in commit 56b11a2126bf ("perf bpf: Removesupport for embedding clang for compiling BPF events (-e foo.c)") butsome parts were left in the Makefile so finish removing them.Signed-off-by: James Clark Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Bill Wendling Cc: Changbin Du Cc: Daniel Wagner Cc: Guilherme Amadio Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Justin Stitt Cc: Kan Liang Cc: Leo Yan Cc: Manu Bretelle Cc: Mark Rutland Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Nathan Chancellor Cc: Nick Desaulniers Cc: Peter Zijlstra Cc: Quentin Monnet Cc: Steinar H. Gunderson Link: https://lore.kernel.org/r/20240910140405.568791-2-james.clark@linaro.org[ Removed one leftover, 'llvm-version' from FEATURE_TESTS_EXTRA ]Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/feature/Makefile

206dcfca - perf build: Autodetect minimum required llvm-dev version

Tue, 10 Sep 2024 14:04:00 +0000

perf build: Autodetect minimum required llvm-dev versionThe new LLVM addr2line feature requires a minimum version of 13 tocompile. Add a feature check for the version so that NO_LLVM=1 doesn'tneed to be explicitly added. Leave the existing llvm feature checkintact because it's used by tools other than Perf.This fixes the following compilation error when the llvm-dev versiondoesn't match: util/llvm-c-helpers.cpp: In function 'char* llvm_name_for_code(dso*, const char*, u64)': util/llvm-c-helpers.cpp:178:21: error: 'std::remove_reference_t' {aka 'struct llvm::DILineInfo'} has no member named 'StartAddress' 178 | addr, res_or_err->StartAddress ? *res_or_err->StartAddress : 0);Fixes: c3f8644c21df9b7d ("perf report: Support LLVM for addr2line()")Signed-off-by: James Clark Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Bill Wendling Cc: Changbin Du Cc: Guilherme Amadio Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Justin Stitt Cc: Kan Liang Cc: Leo Yan Cc: Manu Bretelle Cc: Mark Rutland Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Nathan Chancellor Cc: Nick Desaulniers Cc: Peter Zijlstra Cc: Quentin Monnet Cc: Steinar H. Gunderson Link: https://lore.kernel.org/r/20240910140405.568791-1-james.clark@linaro.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/feature/Makefile

0fd77ae4 - Revert "tools build: Remove leftover libcap tests that prevents fast path feature detection from working"

Thu, 29 Aug 2024 14:46:40 +0000

Revert "tools build: Remove leftover libcap tests that prevents fast path feature detection from working"Ian pointed out that the libcap feature test is also used by bpftool, sowe can't remove it just because perf stopped using it, revert theremoval of the feature test.Since both perf and libcap uses the fast path feature detection(tools/build/feature/test-all.c), probably the best thing is to keeplibcap-devel when building perf even it not being used there.This reverts commit 47b3b6435e4bfb61ae8ffc63a11bd3c310f69acf.Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Kan Liang Cc: Namhyung Kim Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/feature/Makefile

47b3b643 - tools build: Remove leftover libcap tests that prevents fast path feature detection from working

Wed, 28 Aug 2024 22:06:47 +0000

tools build: Remove leftover libcap tests that prevents fast path feature detection from workingI noticed that the fast path feature detection was failing: $ cat /tmp/build/perf-tools-next/feature/test-all.make.output /usr/bin/ld: cannot find -lcap: No such file or directory collect2: error: ld returned 1 exit status $The patch removing the dependency (Fixes tag below) didn't remove thedetection of libcap, and as the fast path feature detection (test-all.c)had -lcap in its Makefile link list of libraries to link, it was failingwhen libcap-devel is not available, fix it by removing those leftoverfiles.Fixes: e25ebda78e230283 ("perf cap: Tidy up and improve capability testing")Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Kan Liang Cc: Namhyung Kim Link: https://lore.kernel.org/lkml/Zs-gjOGFWtAvIZit@x1Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/build/feature/Makefile

f42596c7 - perf: build: Link lib 'zstd' for static build

Wed, 17 Jul 2024 08:22:10 +0000

perf: build: Link lib 'zstd' for static buildWhen build static perf, Makefile reports the error: Makefile.config:480: No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIRThe libdw has been installed on the system, but the build system failsto build the feature detecting binary 'test-libdw-dwarf-unwind'. Thefailure is caused by missing to link the lib 'zstd'.Link lib 'zstd' for the static build, in the end, the dwarf feature canbe enabled in the static perf.Signed-off-by: Leo Yan Tested-by: Ian Rogers Cc: amadio@gentoo.orgCc: James Clark Cc: Thomas Richter Link: https://lore.kernel.org/r/20240717082211.524826-6-leo.yan@arm.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/build/feature/Makefile

91b6a536 - perf: build: Link lib 'lzma' for static build

Wed, 17 Jul 2024 08:22:09 +0000

perf: build: Link lib 'lzma' for static buildThe libunwind feature test failed with the static linkage. This is dueto the 'lzma' lib is missed, so link it to dismiss building failure.Signed-off-by: Leo Yan Tested-by: Ian Rogers Cc: amadio@gentoo.orgCc: James Clark Cc: Thomas Richter Link: https://lore.kernel.org/r/20240717082211.524826-5-leo.yan@arm.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/build/feature/Makefile

536661da - perf: build: Only link libebl.a for old libdw

Wed, 17 Jul 2024 08:22:08 +0000

perf: build: Only link libebl.a for old libdwSince libdw version 0.177, elfutils has merged libebl.a into libdw (seethe commit "libebl: Don't install libebl.a, libebl.h and remove backendsfrom spec." in the elfutils repository).As a result, libebl.a does not exist on Debian Bullseye and newerreleases, causing static perf builds to fail on these distributions.This commit checks the libdw version and only links libebl.a if itdetects that the libdw version is older than 0.177.Signed-off-by: Leo Yan Tested-by: Ian Rogers Cc: amadio@gentoo.orgCc: James Clark Cc: Thomas Richter Link: https://lore.kernel.org/r/20240717082211.524826-4-leo.yan@arm.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/build/feature/Makefile

440cf776 - perf: build: Setup PKG_CONFIG_LIBDIR for cross compilation

Wed, 17 Jul 2024 08:22:06 +0000

perf: build: Setup PKG_CONFIG_LIBDIR for cross compilationOn recent Linux distros like Ubuntu Noble and Debian Bookworm, the'pkg-config-aarch64-linux-gnu' package is missing. As a result, theaarch64-linux-gnu-pkg-config command is not available, which causesbuild failures.When a build passes the environment variables PKG_CONFIG_LIBDIR orPKG_CONFIG_PATH, like a user uses make command or a build system(like Yocto, Buildroot, etc) prepares the variables and passes to thePerf's Makefile, the commit keeps these variables for packageconfiguration. Otherwise, this commit sets the PKG_CONFIG_LIBDIRvariable to use the Multiarch libs for the cross compilation.Signed-off-by: Leo Yan Tested-by: Ian Rogers Cc: amadio@gentoo.orgCc: Thomas Richter Link: https://lore.kernel.org/r/20240717082211.524826-2-leo.yan@arm.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/build/feature/Makefile