[PATCH v2 3/4] perf: Add define for libtracefs version

[Ian Rogers]

This will allow version specific support of libtracefs.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
 tools/perf/Makefile.config | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 2001c315f0db..0ae2e3d8b832 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -1108,6 +1108,12 @@ ifdef LIBTRACEFS_DYNAMIC
   $(call feature_check,libtracefs)
   ifeq ($(feature-libtracefs), 1)
     EXTLIBS += -ltracefs
+    LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs)
+    LIBTRACEFS_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEFS_VERSION)))
+    LIBTRACEFS_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEFS_VERSION)))
+    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
     dummy := $(error Error: No libtracefs devel library found, please install libtracefs-dev);
   endif
-- 
2.33.0.464.g1972c5931b-goog