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| author | Leo Yan <leo.yan@arm.com> | 2024-07-17 10:22:08 +0200 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2024-07-26 20:15:25 +0200 |
| commit | 536661da6ea18fe6df5740bc9e9001d097b035ee (patch) | |
| tree | 4f41087cdf14557e60d7ed5c6e27f991f962cade /tools/build | |
| parent | perf: build: Set Python configuration for cross compilation (diff) | |
| download | linux-536661da6ea18fe6df5740bc9e9001d097b035ee.tar.xz linux-536661da6ea18fe6df5740bc9e9001d097b035ee.zip | |
perf: build: Only link libebl.a for old libdw
Since libdw version 0.177, elfutils has merged libebl.a into libdw (see
the commit "libebl: Don't install libebl.a, libebl.h and remove backends
from spec." in the elfutils repository).
As a result, libebl.a does not exist on Debian Bullseye and newer
releases, causing static perf builds to fail on these distributions.
This commit checks the libdw version and only links libebl.a if it
detects that the libdw version is older than 0.177.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Tested-by: Ian Rogers <irogers@google.com>
Cc: amadio@gentoo.org
Cc: James Clark <james.clark@linaro.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20240717082211.524826-4-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'tools/build')
| -rw-r--r-- | tools/build/feature/Makefile | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index dff65d03d30d..08b2be257639 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -170,7 +170,17 @@ $(OUTPUT)test-libopencsd.bin: DWARFLIBS := -ldw ifeq ($(findstring -static,${LDFLAGS}),-static) -DWARFLIBS += -lelf -lebl -lz -llzma -lbz2 + DWARFLIBS += -lelf -lz -llzma -lbz2 + + LIBDW_VERSION := $(shell $(PKG_CONFIG) --modversion libdw) + LIBDW_VERSION_1 := $(word 1, $(subst ., ,$(LIBDW_VERSION))) + LIBDW_VERSION_2 := $(word 2, $(subst ., ,$(LIBDW_VERSION))) + + # Elfutils merged libebl.a into libdw.a starting from version 0.177, + # Link libebl.a only if libdw is older than this version. + ifeq ($(shell test $(LIBDW_VERSION_2) -lt 177; echo $$?),0) + DWARFLIBS += -lebl + endif endif $(OUTPUT)test-dwarf.bin: |