From: David Ahern <dsah...@gmail.com>
Build currently fails:
$ make -C tools/perf O=/tmp/pbuild NO_LIBELF=1
util/symbol.c: In function ‘dso__load’:
util/symbol.c:1128:27: error: ‘struct symsrc’ has no member named ‘dynsym’
CC /tmp/pbuild/util/pager.o
make: *** [/tmp/pbuild/util/symbol.o] Error 1
make: *** Waiting for unfinished jobs....
Moving the dynsym reference to symbol-elf.c reveals that NO_LIBELF requires
NO_LIBUNWIND:
$ make -C tools/perf O=/tmp/pbuild NO_LIBELF=1
LINK /tmp/pbuild/perf
/tmp/pbuild/libperf.a(unwind.o): In function `elf_section_offset':
/opt/sw/ahern/perf.git/tools/perf/util/unwind.c:176: undefined reference to
`elf_begin'
/opt/sw/ahern/perf.git/tools/perf/util/unwind.c:181: undefined reference to
`gelf_getehdr'
/tmp/pbuild/libperf.a(unwind.o): In function `elf_section_by_name':
/opt/sw/ahern/perf.git/tools/perf/util/unwind.c:157: undefined reference to
`elf_nextscn'
/opt/sw/ahern/perf.git/tools/perf/util/unwind.c:160: undefined reference to
`gelf_getshdr'
/opt/sw/ahern/perf.git/tools/perf/util/unwind.c:161: undefined reference to
`elf_strptr'
/tmp/pbuild/libperf.a(unwind.o): In function `elf_section_offset':
/opt/sw/ahern/perf.git/tools/perf/util/unwind.c:190: undefined reference to
`elf_end'
/tmp/pbuild/libperf.a(unwind.o): In function `read_unwind_spec':
/opt/sw/ahern/perf.git/tools/perf/util/unwind.c:190: undefined reference to
`elf_end'
collect2: ld returned 1 exit status
make: *** [/tmp/pbuild/perf] Error 1
make: Leaving directory `/opt/sw/ahern/perf.git/tools/perf'
This patch fixes both.
Reviewed-by: Namhyung Kim <namhy...@kernel.org>
Signed-off-by: David Ahern <dsah...@gmail.com>
Cc: Jiri Olsa <jo...@redhat.com>
Cc: Namhyung Kim <namhy...@kernel.org>
Link:
http://lkml.kernel.org/r/1345391234-71906-1-git-send-email-dsah...@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
tools/perf/Makefile | 1 +
tools/perf/util/symbol-elf.c | 3 +++
tools/perf/util/symbol.c | 2 +-
3 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 8beff99..90cfecf 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -469,6 +469,7 @@ PYRF_OBJS += $(OUTPUT)util/xyarray.o
ifdef NO_LIBELF
NO_DWARF := 1
NO_DEMANGLE := 1
+ NO_LIBUNWIND := 1
else
FLAGS_LIBELF=$(ALL_CFLAGS) $(ALL_LDFLAGS) $(EXTLIBS)
ifneq ($(call try-cc,$(SOURCE_LIBELF),$(FLAGS_LIBELF)),y)
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 5b37e13..db0cc92 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -183,6 +183,9 @@ int dso__synthesize_plt_symbols(struct dso *dso, struct
symsrc *ss, struct map *
Elf *elf;
int nr = 0, symidx, err = 0;
+ if (!ss->dynsym)
+ return 0;
+
elf = ss->elf;
ehdr = ss->ehdr;
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 2293a4a..753699a 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1125,7 +1125,7 @@ int dso__load(struct dso *dso, struct map *map,
symbol_filter_t filter)
else
ret = -1;
- if (ret > 0 && runtime_ss->dynsym) {
+ if (ret > 0) {
int nr_plt;
nr_plt = dso__synthesize_plt_symbols(dso, runtime_ss, map,
filter);
--
1.7.1
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