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-rw-r--r--tools/perf/util/Build2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 9dfae1bda9cc..485e1a343165 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -269,7 +269,7 @@ CFLAGS_expr-flex.o += $(flex_flags)
bison_flags := -DYYENABLE_NLS=0
BISON_GE_35 := $(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\)/\1\2/g') \>\= 35)
ifeq ($(BISON_GE_35),1)
- bison_flags += -Wno-unused-parameter -Wno-nested-externs -Wno-implicit-function-declaration -Wno-switch-enum
+ bison_flags += -Wno-unused-parameter -Wno-nested-externs -Wno-implicit-function-declaration -Wno-switch-enum -Wno-unused-but-set-variable -Wno-unknown-warning-option
else
bison_flags += -w
endif