[yocto] [PATCH 3/4] perf: add 'libperl not found' warning

[tom.zanussi at intel.com]

From: Tom Zanussi <tom.zanussi at intel.com>

If libperl isn't found, display a message to that effect along with
some hints on how to fix it.

Signed-off-by: Tom Zanussi <tom.zanussi at intel.com>
---
 tools/perf/Makefile |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index b8cb4d4..97bca9c 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -490,6 +490,7 @@ else
 	FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
 
 	ifneq ($(call try-cc,$(SOURCE_PERL_EMBED),$(FLAGS_PERL_EMBED)),y)
+		msg := $(warning libperl not found, disables Perl scripting support. Please install libperl-dev or perl-devel);
 		BASIC_CFLAGS += -DNO_LIBPERL
 	else
                ALL_LDFLAGS += $(PERL_EMBED_LDFLAGS)
-- 
1.7.0.4