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authorArnaldo Carvalho de Melo <acme@redhat.com>2014-02-20 16:08:18 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2014-02-24 09:29:36 -0300
commit7a0447d61d2d754988add992be2b46d4587ae86a (patch)
treeed8e1c37baa37609e5bc34571564cb7fa1598812 /tools
parent8d79076a3c5dbe45109fd15d2489168fbbb28a3d (diff)
downloadop-kernel-dev-7a0447d61d2d754988add992be2b46d4587ae86a.zip
op-kernel-dev-7a0447d61d2d754988add992be2b46d4587ae86a.tar.gz
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 <jolsa@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-huoxnou7sw85lm58k3pi1xhw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/config/Makefile2
1 files changed, 1 insertions, 1 deletions
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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