Commit-ID: 7a0447d61d2d754988add992be2b46d4587ae86a
Gitweb: http://git.kernel.org/tip/7a0447d61d2d754988add992be2b46d4587ae86a
Author: Arnaldo Carvalho de Melo <a...@redhat.com>
AuthorDate: Thu, 20 Feb 2014 16:08:18 -0300
Committer: Arnaldo Carvalho de Melo <a...@redhat.com>
CommitDate: Mon, 24 Feb 2014 09:29:36 -0300
perf tools: Warn the user about how to enable libunwind support
When one has libunwind installed somewhere the perf tools build process
doesn't expects it to be, this happens:
[acme@ssdandy linux]$ make O=/tmp/build/perf -C tools/perf/ install-bin
make: Entering directory `/home/acme/git/linux/tools/perf'
BUILD: Doing 'make -j8' parallel build
config/Makefile:312: No libunwind found, disabling post unwind support.
Please install libunwind-dev[el] >= 1.1
Auto-detecting system features:
<SNIP>
... libunwind: [ OFF ]
Change the message so that it tells how to use a non-standard libunwind
install directory:
config/Makefile:312: No libunwind found, disabling post unwind support.
Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR
[acme@ssdandy linux]$ make LIBUNWIND_DIR=/opt/libunwind-git/
O=/tmp/build/perf -C tools/perf/ install-bin
make: Entering directory `/home/acme/git/linux/tools/perf'
BUILD: Doing 'make -j8' parallel build
Auto-detecting system features:
<SNIP>
... libunwind: [ on ]
Acked-by: Jiri Olsa <jo...@redhat.com>
Cc: Adrian Hunter <adrian.hun...@intel.com>
Cc: David Ahern <dsah...@gmail.com>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Jiri Olsa <jo...@redhat.com>
Cc: Mike Galbraith <efa...@gmx.de>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Stephane Eranian <eran...@google.com>
Link: http://lkml.kernel.org/n/tip-huoxnou7sw85lm58k3pi1...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
tools/perf/config/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 97a64c4..9429805 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -309,7 +309,7 @@ endif # NO_LIBELF
ifndef NO_LIBUNWIND
ifneq ($(feature-libunwind), 1)
- msg := $(warning No libunwind found, disabling post unwind support. Please
install libunwind-dev[el] >= 1.1);
+ msg := $(warning No libunwind found, disabling post unwind support. Please
install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);
NO_LIBUNWIND := 1
else
ifeq ($(ARCH),arm)
--
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