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* [PATCH] perf build: Specify libtraceevent dir to rpath for asan/msan build
@ 2024-05-06  8:16 Yang Jihong
  2024-05-08 23:18 ` Ian Rogers
  0 siblings, 1 reply; 4+ messages in thread
From: Yang Jihong @ 2024-05-06  8:16 UTC (permalink / raw)
  To: peterz, mingo, acme, namhyung, mark.rutland, alexander.shishkin,
	jolsa, irogers, adrian.hunter, kan.liang, james.clark,
	linux-perf-users, linux-kernel
  Cc: yangjihong

perf built by asan/msan will not search for shared libraries in the
-L directory. For cross-compilation, we assume that sanitizers is
generally not enabled and add libtraceevent dir to rpath in a simple way.

1. msan build

Before:
  $ make -C tools/perf O=/tmp/perf DEBUG=1 EXTRA_CFLAGS="-O0 -g -fno-omit-frame-pointer -fsanitize=memory -fsanitize-memory-track-origins" CC=clang CXX=clang++ HOSTCC=clang NO_LIBELF=1 BUILD_BPF_SKEL=0 NO_LIBPFM=1 LIBTRACEEVENT_DIR=/opt/libtraceevent
  ...
  $ /tmp/perf/perf
  /tmp/perf/perf: error while loading shared libraries: libtraceevent.so.1: cannot open shared object file: No such file or directory

After:
  $ make -C tools/perf O=/tmp/perf DEBUG=1 EXTRA_CFLAGS="-O0 -g -fno-omit-frame-pointer -fsanitize=memory -fsanitize-memory-track-origins" CC=clang CXX=clang++ HOSTCC=clang NO_LIBELF=1 BUILD_BPF_SKEL=0 NO_LIBPFM=1 LIBTRACEEVENT_DIR=/opt/libtraceevent
  ...
  $ /tmp/perf/perf --build-options
  perf version 6.9.0-rc5
  <SNIP>
           libtraceevent: [ on  ]  # HAVE_LIBTRACEEVENT
  <SNIP>

 2. asan build

Before:
  $ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=address' LIBTRACEEVENT_DIR=/opt/libtraceevent
  ...
  $ ./perf
  ./perf: error while loading shared libraries: libtraceevent.so.1: cannot open shared object file: No such file or directory

After:
   $ make DEBUG=1 EXTRA_CFLAGS='-fno-omit-frame-pointer -fsanitize=address' LIBTRACEEVENT_DIR=/opt/libtraceevent
   ...
   $ ./perf --build-options
   perf version 6.9.0-rc5
   <SNIP>
            libtraceevent: [ on  ]  # HAVE_LIBTRACEEVENT
   <SNIP>

Signed-off-by: Yang Jihong <yangjihong@bytedance.com>
---
 tools/perf/Makefile.config | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 7f1e016a9253..a9a923358604 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -188,6 +188,10 @@ TRACEEVENTLIBS := -ltraceevent
 ifdef LIBTRACEEVENT_DIR
   LIBTRACEEVENT_CFLAGS  := -I$(LIBTRACEEVENT_DIR)/include
   LIBTRACEEVENT_LDFLAGS := -L$(LIBTRACEEVENT_DIR)/lib
+  # Specify rpath for asan/msan build. Generally, cross-compilation will not enable sanitizers.
+  ifeq ($(findstring -fsanitize=,${EXTRA_CFLAGS}),-fsanitize=)
+    LIBTRACEEVENT_LDFLAGS += -Wl,-rpath,$(LIBTRACEEVENT_DIR)/lib
+  endif
 endif
 FEATURE_CHECK_CFLAGS-libtraceevent := $(LIBTRACEEVENT_CFLAGS)
 FEATURE_CHECK_LDFLAGS-libtraceevent := $(LIBTRACEEVENT_LDFLAGS) $(TRACEEVENTLIBS)
-- 
2.25.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2024-05-13 17:57 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2024-05-06  8:16 [PATCH] perf build: Specify libtraceevent dir to rpath for asan/msan build Yang Jihong
2024-05-08 23:18 ` Ian Rogers
2024-05-13  7:53   ` Yang Jihong
2024-05-13 17:57     ` Ian Rogers

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