diff options
| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-02-20 16:08:18 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-02-24 09:29:36 -0300 |
| commit | 7a0447d61d2d754988add992be2b46d4587ae86a (patch) | |
| tree | ed8e1c37baa37609e5bc34571564cb7fa1598812 /tools/perf/config | |
| parent | perf tools: Add variable display for VF make output (diff) | |
| download | linux-dev-7a0447d61d2d754988add992be2b46d4587ae86a.tar.xz linux-dev-7a0447d61d2d754988add992be2b46d4587ae86a.zip | |
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/perf/config')
| -rw-r--r-- | tools/perf/config/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index 97a64c4631d3..9429805f395c 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) |