On Sat, May 28, 2016 at 11:59:54AM +0000, He Kuang wrote: SNIP
> diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile > index 6f9f566..3a304a3 100644 > --- a/tools/perf/config/Makefile > +++ b/tools/perf/config/Makefile > @@ -354,10 +354,24 @@ ifeq ($(ARCH),powerpc) > endif > > ifndef NO_LIBUNWIND > + have_libunwind := > ifneq ($(feature-libunwind), 1) > msg := $(warning No libunwind found. Please install libunwind-dev[el] >= > 1.1 and/or set LIBUNWIND_DIR); > + NO_LOCAL_LIBUNWIND := 1 > + else > + have_libunwind := 1 > + CFLAGS += -DHAVE_LIBUNWIND_LOCAL_SUPPORT > + $(call detected,CONFIG_LOCAL_LIBUNWIND) > + endif > + > + ifneq ($(have_libunwind), 1) > NO_LIBUNWIND := 1 > + else > + CFLAGS += -I$(LIBUNWIND_DIR)/include > + LDFLAGS += -L$(LIBUNWIND_DIR)/lib changelog says it's just switch, then why do we need to add above setup? jirka
