[PATCH 2/2] perf build: warn if libtracefs is not found

[Guilherme Amadio]

Signed-off-by: Guilherme Amadio <amadio@xxxxxxxxxx>
---
 tools/perf/Makefile.config | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 987b48f242d3..e99afc7eb4b5 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -1204,6 +1204,8 @@ ifneq ($(NO_LIBTRACEEVENT),1)
     LIBTRACEFS_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEFS_VERSION)))
     LIBTRACEFS_VERSION_CPP := $(shell expr $(LIBTRACEFS_VERSION_1) \* 255 \* 255 + $(LIBTRACEFS_VERSION_2) \* 255 + $(LIBTRACEFS_VERSION_3))
     CFLAGS += -DLIBTRACEFS_VERSION=$(LIBTRACEFS_VERSION_CPP)
+  else
+    $(warning libtracefs is missing. Please install libtracefs-dev/libtracefs-devel)
   endif
 endif
 
-- 
2.45.2