perf symbols: Support minimal build without libelf
Now we have isolated all ELF-specific stuff, it's possible to build
without libelf. The output binary can do most of jobs but lacks (user
level) symbol information - kernel symbols are still accessable thanks
to the kallsyms.
To build perf without libelf (elfutils), give NO_LIBELF=1 to make.
For now, only 'perf probe' command is removed since it depends on
libelf/libdw heavily.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1344228082-15569-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 115654c..287cb34 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -156,6 +156,7 @@
pr_warning(", continuing without symbols\n");
return -1;
} else if (nr == 0) {
+#ifndef NO_LIBELF_SUPPORT
const size_t len = strlen(name);
const size_t real_len = len - sizeof(DSO__DELETED);
@@ -168,7 +169,7 @@
pr_warning("no symbols found in %s, maybe install "
"a debug package?\n", name);
}
-
+#endif
return -1;
}
/*