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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-04 19:35:47 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-04 19:38:59 -0300 |
| commit | 2492c465ad3ae6860ebfff1c9032865017835e70 (patch) | |
| tree | 3d90bb4516d8e7bfbff757a824954c8b91a046bd /tools/perf/util/symbol-elf.c | |
| parent | perf probe: Remove caches when --cache is given (diff) | |
| download | wireguard-linux-2492c465ad3ae6860ebfff1c9032865017835e70.tar.xz wireguard-linux-2492c465ad3ae6860ebfff1c9032865017835e70.zip | |
perf build: Add feature detection for libelf's elf_getshdrstrndx()
That appeared after 0.140, and will be used in the SDT code, so, to
avoid bisection break on older systems, add a feature detection and
provide a stub with a pr_debug() to keep it building.
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-80y0eldgweorqnwha9rvfxjr@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/symbol-elf.c')
| -rw-r--r-- | tools/perf/util/symbol-elf.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 87a297dd8901..b222552c7159 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -54,6 +54,14 @@ static int elf_getphdrnum(Elf *elf, size_t *dst) } #endif +#ifndef HAVE_ELF_GETSHDRSTRNDX_SUPPORT +static int elf_getshdrstrndx(Elf *elf __maybe_unused, size_t *dst __maybe_unused) +{ + pr_err("%s: update your libelf to > 0.140, this one lacks elf_getshdrstrndx().\n", __func__); + return -1; +} +#endif + #ifndef NT_GNU_BUILD_ID #define NT_GNU_BUILD_ID 3 #endif |