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perf build: Feature test for libbfd thread safety API

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The non-distro build requires libbfd 2.42 since commit b72b8132d8
("perf libbfd: Ensure libbfd is initialized prior to use"). Add a
feature test so that it's obvious why the build fails if this criteria
isn't met.

Signed-off-by: James Clark <james.clark@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Leo Yan <leo.yan@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <nick.desaulniers+lkml@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
James Clark 2025-12-23 17:00:27 +00:00 committed by Arnaldo Carvalho de Melo
parent c0cb97a275
commit cff602f659
4 changed files with 28 additions and 0 deletions
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1
tools/build/Makefile.feature
View File

@ -71,6 +71,7 @@ FEATURE_TESTS_BASIC := \
gettid \
glibc \
libbfd \
libbfd-threadsafe \
libelf \
libelf-getphdrnum \
libelf-gelf_getnote \

4
tools/build/feature/Makefile
View File

@ -13,6 +13,7 @@ FILES= \
test-gtk2-infobar.bin \
test-hello.bin \
test-libbfd.bin \
test-libbfd-threadsafe.bin \
test-disassembler-four-args.bin \
test-disassembler-init-styled.bin \
test-reallocarray.bin \
@ -267,6 +268,9 @@ $(OUTPUT)test-libpython.bin:
$(OUTPUT)test-libbfd.bin:
$(BUILD_BFD)
$(OUTPUT)test-libbfd-threadsafe.bin:
$(BUILD_BFD) || $(BUILD_BFD) -liberty || $(BUILD_BFD) -liberty -lz
$(OUTPUT)test-disassembler-four-args.bin:
$(BUILD_BFD) -lopcodes || $(BUILD_BFD) -lopcodes -liberty || \
$(BUILD_BFD) -lopcodes -liberty -lz

18
tools/build/feature/test-libbfd-threadsafe.c Normal file
View File

@ -0,0 +1,18 @@
// SPDX-License-Identifier: GPL-2.0
#include <bfd.h>
static bool lock(void *unused)
{
return true;
}
static bool unlock(void *unused)
{
return true;
}
int main(void)
{
/* Check for presence of new thread safety API (version 2.42) */
return !bfd_thread_init(lock, unlock, NULL);
}

5
tools/perf/Makefile.config
View File

@ -935,9 +935,14 @@ ifdef BUILD_NONDISTRO
$(call feature_check,libbfd)
$(call feature_check,disassembler-four-args)
$(call feature_check,disassembler-init-styled)
$(call feature_check,libbfd-threadsafe)
$(call feature_check,libbfd-liberty)
$(call feature_check,libbfd-liberty-z)
ifneq ($(feature-libbfd-threadsafe), 1)
$(error binutils 2.42 or later is required for non-distro builds)
endif
# we may be on a system that requires -liberty and (maybe) -lz
# to link against -lbfd; test each case individually here
ifeq ($(feature-libbfd), 1)