[PATCH 08/10] perf expr: Avoid implicit lex function declaration

[Ian Rogers <irogers@google.com>]

Add include and a dependency.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/Build  | 2 ++
 tools/perf/util/expr.y | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 43f3310827c4..dc5b80ae39ac 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -211,6 +211,8 @@ $(OUTPUT)util/expr-bison.c $(OUTPUT)util/expr-bison.h: util/expr.y
 	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) \
 		-o $(OUTPUT)util/expr-bison.c -p expr_
 
+$(OUTPUT)util/expr-bison.o: $(OUTPUT)util/expr-flex.h
+
 $(OUTPUT)util/pmu-flex.c $(OUTPUT)util/pmu-flex.h: util/pmu.l $(OUTPUT)util/pmu-bison.c
 	$(call rule_mkdir)
 	$(Q)$(call echo-cmd,flex)$(FLEX) -o $(OUTPUT)util/pmu-flex.c \
diff --git a/tools/perf/util/expr.y b/tools/perf/util/expr.y
index bf3e898e3055..f34a5e544a41 100644
--- a/tools/perf/util/expr.y
+++ b/tools/perf/util/expr.y
@@ -39,6 +39,8 @@
 %type <num> expr if_expr
 
 %{
+#include "expr-flex.h"
+
 static void expr_error(double *final_val __maybe_unused,
 		       struct expr_parse_ctx *ctx __maybe_unused,
 		       void *scanner,
-- 
2.27.0.278.ge193c7cf3a9-goog