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-rw-r--r--tools/perf/Makefile.perf4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index a700a079a218..58924eb0f40b 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -164,8 +164,8 @@ LN = ln -f
MKDIR = mkdir
FIND = find
INSTALL = install
-FLEX = flex
-BISON = bison
+FLEX ?= flex
+BISON ?= bison
STRIP = strip
AWK = awk