Thread (4 messages) 4 messages, 1 author, 2021-06-22
STALE1806d

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

From: Ian Rogers <irogers@google.com>
Date: 2021-06-22 04:38:37
Also in: lkml
Subsystem: performance events subsystem, the rest · Maintainers: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds

This will allow version specific support of libtracefs.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/Makefile.config | 6 ++++++
 1 file changed, 6 insertions(+)
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 6f318c16e8f1..9389ef68e2fb 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
-- 
2.32.0.288.g62a8d224e6-goog
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