[PATCH 00/10] perf parse-events: enable more flex/bison warnings

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* [PATCH 00/10] perf parse-events: enable more flex/bison warnings
@ 2020-06-10 21:50 Ian Rogers
  2020-06-10 21:50 ` [PATCH 01/10] perf parse-events: Use automatic variable for flex input Ian Rogers
                   ` (10 more replies)
  0 siblings, 11 replies; 16+ messages in thread
From: Ian Rogers @ 2020-06-10 21:50 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Andi Kleen, Jin Yao, John Garry, Adrian Hunter, linux-kernel
  Cc: Stephane Eranian, Ian Rogers

All C compiler warnings are disabled are disabled by -w. This change
removes the -w from flex and bison targets. To avoid implicit
declarations header files are declared as targets and included.

Tested with GCC 9.3.0 and clang 9.0.1.

Previously posted as a single change:
https://lore.kernel.org/lkml/20200609234344.3795-2-irogers@google.com/

Ian Rogers (10):
  perf parse-events: Use automatic variable for flex input
  perf parse-events: Use automatic variable for yacc input
  perf pmu: Add bison debug build flag
  perf pmu: Add flex debug build flag
  perf parse-events: Declare flex header file output
  perf parse-events: Declare bison header file output
  perf parse-events: Disable a subset of flex warnings
  perf expr: Avoid implicit lex function declaration
  perf parse-events: Avoid implicit lex function declaration
  perf parse-events: Disable a subset of bison warnings

 tools/perf/util/Build          | 50 +++++++++++++++++++++-------------
 tools/perf/util/expr.y         |  2 ++
 tools/perf/util/parse-events.y |  1 +
 3 files changed, 34 insertions(+), 19 deletions(-)

-- 
2.27.0.278.ge193c7cf3a9-goog


^ permalink raw reply	[flat|nested] 16+ messages in thread

* [PATCH 01/10] perf parse-events: Use automatic variable for flex input
  2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
@ 2020-06-10 21:50 ` Ian Rogers
  2020-06-10 21:50 ` [PATCH 02/10] perf parse-events: Use automatic variable for yacc input Ian Rogers
                   ` (9 subsequent siblings)
  10 siblings, 0 replies; 16+ messages in thread
From: Ian Rogers @ 2020-06-10 21:50 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Andi Kleen, Jin Yao, John Garry, Adrian Hunter, linux-kernel
  Cc: Stephane Eranian, Ian Rogers

This reduces the command line size slightly.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/Build | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 8d18380ecd10..66cf009f78d8 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -193,7 +193,7 @@ CFLAGS_genelf_debug.o  += -Wno-packed
 
 $(OUTPUT)util/parse-events-flex.c: util/parse-events.l $(OUTPUT)util/parse-events-bison.c
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/parse-events-flex.h $(PARSER_DEBUG_FLEX) util/parse-events.l
+	$(Q)$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/parse-events-flex.h $(PARSER_DEBUG_FLEX) $<
 
 $(OUTPUT)util/parse-events-bison.c: util/parse-events.y
 	$(call rule_mkdir)
@@ -201,7 +201,7 @@ $(OUTPUT)util/parse-events-bison.c: util/parse-events.y
 
 $(OUTPUT)util/expr-flex.c: util/expr.l $(OUTPUT)util/expr-bison.c
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/expr-flex.h $(PARSER_DEBUG_FLEX) util/expr.l
+	$(Q)$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/expr-flex.h $(PARSER_DEBUG_FLEX) $<
 
 $(OUTPUT)util/expr-bison.c: util/expr.y
 	$(call rule_mkdir)
@@ -209,7 +209,7 @@ $(OUTPUT)util/expr-bison.c: util/expr.y
 
 $(OUTPUT)util/pmu-flex.c: util/pmu.l $(OUTPUT)util/pmu-bison.c
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/pmu-flex.h util/pmu.l
+	$(Q)$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/pmu-flex.h $<
 
 $(OUTPUT)util/pmu-bison.c: util/pmu.y
 	$(call rule_mkdir)
-- 
2.27.0.278.ge193c7cf3a9-goog


^ permalink raw reply related	[flat|nested] 16+ messages in thread

* [PATCH 02/10] perf parse-events: Use automatic variable for yacc input
  2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
  2020-06-10 21:50 ` [PATCH 01/10] perf parse-events: Use automatic variable for flex input Ian Rogers
@ 2020-06-10 21:50 ` Ian Rogers
  2020-06-10 21:50 ` [PATCH 03/10] perf pmu: Add bison debug build flag Ian Rogers
                   ` (8 subsequent siblings)
  10 siblings, 0 replies; 16+ messages in thread
From: Ian Rogers @ 2020-06-10 21:50 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Andi Kleen, Jin Yao, John Garry, Adrian Hunter, linux-kernel
  Cc: Stephane Eranian, Ian Rogers

This reduces the command line size slightly.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/Build | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 66cf009f78d8..4e1aa52d75a8 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -197,7 +197,7 @@ $(OUTPUT)util/parse-events-flex.c: util/parse-events.l $(OUTPUT)util/parse-event
 
 $(OUTPUT)util/parse-events-bison.c: util/parse-events.y
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,bison)$(BISON) -v util/parse-events.y -d $(PARSER_DEBUG_BISON) -o $@ -p parse_events_
+	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) -o $@ -p parse_events_
 
 $(OUTPUT)util/expr-flex.c: util/expr.l $(OUTPUT)util/expr-bison.c
 	$(call rule_mkdir)
@@ -205,7 +205,7 @@ $(OUTPUT)util/expr-flex.c: util/expr.l $(OUTPUT)util/expr-bison.c
 
 $(OUTPUT)util/expr-bison.c: util/expr.y
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,bison)$(BISON) -v util/expr.y -d $(PARSER_DEBUG_BISON) -o $@ -p expr_
+	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) -o $@ -p expr_
 
 $(OUTPUT)util/pmu-flex.c: util/pmu.l $(OUTPUT)util/pmu-bison.c
 	$(call rule_mkdir)
@@ -213,7 +213,7 @@ $(OUTPUT)util/pmu-flex.c: util/pmu.l $(OUTPUT)util/pmu-bison.c
 
 $(OUTPUT)util/pmu-bison.c: util/pmu.y
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,bison)$(BISON) -v util/pmu.y -d -o $@ -p perf_pmu_
+	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d -o $@ -p perf_pmu_
 
 CFLAGS_parse-events-flex.o  += -w
 CFLAGS_pmu-flex.o           += -w
-- 
2.27.0.278.ge193c7cf3a9-goog


^ permalink raw reply related	[flat|nested] 16+ messages in thread

* [PATCH 03/10] perf pmu: Add bison debug build flag
  2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
  2020-06-10 21:50 ` [PATCH 01/10] perf parse-events: Use automatic variable for flex input Ian Rogers
  2020-06-10 21:50 ` [PATCH 02/10] perf parse-events: Use automatic variable for yacc input Ian Rogers
@ 2020-06-10 21:50 ` Ian Rogers
  2020-06-10 21:50 ` [PATCH 04/10] perf pmu: Add flex " Ian Rogers
                   ` (7 subsequent siblings)
  10 siblings, 0 replies; 16+ messages in thread
From: Ian Rogers @ 2020-06-10 21:50 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Andi Kleen, Jin Yao, John Garry, Adrian Hunter, linux-kernel
  Cc: Stephane Eranian, Ian Rogers

Allow pmu parser to be debugged as the parse-events and expr currently are.
Enabling this requires the C code to set perf_pmu_debug.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/Build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 4e1aa52d75a8..3ae4adc8e966 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -213,7 +213,7 @@ $(OUTPUT)util/pmu-flex.c: util/pmu.l $(OUTPUT)util/pmu-bison.c
 
 $(OUTPUT)util/pmu-bison.c: util/pmu.y
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d -o $@ -p perf_pmu_
+	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) -o $@ -p perf_pmu_
 
 CFLAGS_parse-events-flex.o  += -w
 CFLAGS_pmu-flex.o           += -w
-- 
2.27.0.278.ge193c7cf3a9-goog


^ permalink raw reply related	[flat|nested] 16+ messages in thread

* [PATCH 04/10] perf pmu: Add flex debug build flag
  2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
                   ` (2 preceding siblings ...)
  2020-06-10 21:50 ` [PATCH 03/10] perf pmu: Add bison debug build flag Ian Rogers
@ 2020-06-10 21:50 ` Ian Rogers
  2020-06-10 21:50 ` [PATCH 05/10] perf parse-events: Declare flex header file output Ian Rogers
                   ` (6 subsequent siblings)
  10 siblings, 0 replies; 16+ messages in thread
From: Ian Rogers @ 2020-06-10 21:50 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Andi Kleen, Jin Yao, John Garry, Adrian Hunter, linux-kernel
  Cc: Stephane Eranian, Ian Rogers

Allow pmu parser's flex to be debugged as the parse-events and
expr currently are. Enabling this requires the C code to call
perf_pmu__flex_debug.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/Build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 3ae4adc8e966..e63bfc46d50f 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -209,7 +209,7 @@ $(OUTPUT)util/expr-bison.c: util/expr.y
 
 $(OUTPUT)util/pmu-flex.c: util/pmu.l $(OUTPUT)util/pmu-bison.c
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/pmu-flex.h $<
+	$(Q)$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/pmu-flex.h $(PARSER_DEBUG_FLEX) $<
 
 $(OUTPUT)util/pmu-bison.c: util/pmu.y
 	$(call rule_mkdir)
-- 
2.27.0.278.ge193c7cf3a9-goog


^ permalink raw reply related	[flat|nested] 16+ messages in thread

* [PATCH 05/10] perf parse-events: Declare flex header file output
  2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
                   ` (3 preceding siblings ...)
  2020-06-10 21:50 ` [PATCH 04/10] perf pmu: Add flex " Ian Rogers
@ 2020-06-10 21:50 ` Ian Rogers
  2020-06-10 21:50 ` [PATCH 06/10] perf parse-events: Declare bison " Ian Rogers
                   ` (5 subsequent siblings)
  10 siblings, 0 replies; 16+ messages in thread
From: Ian Rogers @ 2020-06-10 21:50 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Andi Kleen, Jin Yao, John Garry, Adrian Hunter, linux-kernel
  Cc: Stephane Eranian, Ian Rogers

Declare flex header file output so that bison C files can depend upon
them. As there are multiple output targets $@ is replaced by the target
name.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/Build | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index e63bfc46d50f..55c78ac53f04 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -191,25 +191,28 @@ CFLAGS_llvm-utils.o += -DPERF_INCLUDE_DIR="BUILD_STR($(perf_include_dir_SQ))"
 # avoid compiler warnings in 32-bit mode
 CFLAGS_genelf_debug.o  += -Wno-packed
 
-$(OUTPUT)util/parse-events-flex.c: util/parse-events.l $(OUTPUT)util/parse-events-bison.c
+$(OUTPUT)util/parse-events-flex.c $(OUTPUT)util/parse-events-flex.h: util/parse-events.l $(OUTPUT)util/parse-events-bison.c
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/parse-events-flex.h $(PARSER_DEBUG_FLEX) $<
+	$(Q)$(call echo-cmd,flex)$(FLEX) -o $(OUTPUT)util/parse-events-flex.c \
+		--header-file=$(OUTPUT)util/parse-events-flex.h $(PARSER_DEBUG_FLEX) $<
 
 $(OUTPUT)util/parse-events-bison.c: util/parse-events.y
 	$(call rule_mkdir)
 	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) -o $@ -p parse_events_
 
-$(OUTPUT)util/expr-flex.c: util/expr.l $(OUTPUT)util/expr-bison.c
+$(OUTPUT)util/expr-flex.c $(OUTPUT)util/expr-flex.h: util/expr.l $(OUTPUT)util/expr-bison.c
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,flex)$(FLEX) -o $@ --header-file=$(OUTPUT)util/expr-flex.h $(PARSER_DEBUG_FLEX) $<
+	$(Q)$(call echo-cmd,flex)$(FLEX) -o $(OUTPUT)util/expr-flex.c \
+		--header-file=$(OUTPUT)util/expr-flex.h $(PARSER_DEBUG_FLEX) $<
 
 $(OUTPUT)util/expr-bison.c: util/expr.y
 	$(call rule_mkdir)
 	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) -o $@ -p expr_
 
-$(OUTPUT)util/pmu-flex.c: util/pmu.l $(OUTPUT)util/pmu-bison.c
+$(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 $@ --header-file=$(OUTPUT)util/pmu-flex.h $(PARSER_DEBUG_FLEX) $<
+	$(Q)$(call echo-cmd,flex)$(FLEX) -o $(OUTPUT)util/pmu-flex.c \
+		--header-file=$(OUTPUT)util/pmu-flex.h $(PARSER_DEBUG_FLEX) $<
 
 $(OUTPUT)util/pmu-bison.c: util/pmu.y
 	$(call rule_mkdir)
-- 
2.27.0.278.ge193c7cf3a9-goog


^ permalink raw reply related	[flat|nested] 16+ messages in thread

* [PATCH 06/10] perf parse-events: Declare bison header file output
  2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
                   ` (4 preceding siblings ...)
  2020-06-10 21:50 ` [PATCH 05/10] perf parse-events: Declare flex header file output Ian Rogers
@ 2020-06-10 21:50 ` Ian Rogers
  2020-06-10 21:50 ` [PATCH 07/10] perf parse-events: Disable a subset of flex warnings Ian Rogers
                   ` (4 subsequent siblings)
  10 siblings, 0 replies; 16+ messages in thread
From: Ian Rogers @ 2020-06-10 21:50 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Andi Kleen, Jin Yao, John Garry, Adrian Hunter, linux-kernel
  Cc: Stephane Eranian, Ian Rogers

Declare bison header file output so that C files can depend upon
them. As there are multiple output targets $@ is replaced by the
target name.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/Build | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 55c78ac53f04..504a6bb991ba 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -196,27 +196,30 @@ $(OUTPUT)util/parse-events-flex.c $(OUTPUT)util/parse-events-flex.h: util/parse-
 	$(Q)$(call echo-cmd,flex)$(FLEX) -o $(OUTPUT)util/parse-events-flex.c \
 		--header-file=$(OUTPUT)util/parse-events-flex.h $(PARSER_DEBUG_FLEX) $<
 
-$(OUTPUT)util/parse-events-bison.c: util/parse-events.y
+$(OUTPUT)util/parse-events-bison.c $(OUTPUT)util/parse-events-bison.h: util/parse-events.y
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) -o $@ -p parse_events_
+	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) \
+		-o $(OUTPUT)util/parse-events-bison.c -p parse_events_
 
 $(OUTPUT)util/expr-flex.c $(OUTPUT)util/expr-flex.h: util/expr.l $(OUTPUT)util/expr-bison.c
 	$(call rule_mkdir)
 	$(Q)$(call echo-cmd,flex)$(FLEX) -o $(OUTPUT)util/expr-flex.c \
 		--header-file=$(OUTPUT)util/expr-flex.h $(PARSER_DEBUG_FLEX) $<
 
-$(OUTPUT)util/expr-bison.c: util/expr.y
+$(OUTPUT)util/expr-bison.c $(OUTPUT)util/expr-bison.h: util/expr.y
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) -o $@ -p expr_
+	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) \
+		-o $(OUTPUT)util/expr-bison.c -p expr_
 
 $(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 $(OUTPUT)util/pmu-flex.c \
 		--header-file=$(OUTPUT)util/pmu-flex.h $(PARSER_DEBUG_FLEX) $<
 
-$(OUTPUT)util/pmu-bison.c: util/pmu.y
+$(OUTPUT)util/pmu-bison.c $(OUTPUT)util/pmu-bison.h: util/pmu.y
 	$(call rule_mkdir)
-	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) -o $@ -p perf_pmu_
+	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) \
+		-o $(OUTPUT)util/pmu-bison.c -p perf_pmu_
 
 CFLAGS_parse-events-flex.o  += -w
 CFLAGS_pmu-flex.o           += -w
-- 
2.27.0.278.ge193c7cf3a9-goog


^ permalink raw reply related	[flat|nested] 16+ messages in thread

* [PATCH 07/10] perf parse-events: Disable a subset of flex warnings
  2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
                   ` (5 preceding siblings ...)
  2020-06-10 21:50 ` [PATCH 06/10] perf parse-events: Declare bison " Ian Rogers
@ 2020-06-10 21:50 ` Ian Rogers
  2020-06-10 21:50 ` [PATCH 08/10] perf expr: Avoid implicit lex function declaration Ian Rogers
                   ` (3 subsequent siblings)
  10 siblings, 0 replies; 16+ messages in thread
From: Ian Rogers @ 2020-06-10 21:50 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Andi Kleen, Jin Yao, John Garry, Adrian Hunter, linux-kernel
  Cc: Stephane Eranian, Ian Rogers

Rather than disable all warnings with -w, disable specific warnings.
Tested with GCC 9.3.0 and clang 9.0.1.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/Build | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 504a6bb991ba..43f3310827c4 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -221,9 +221,10 @@ $(OUTPUT)util/pmu-bison.c $(OUTPUT)util/pmu-bison.h: util/pmu.y
 	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) \
 		-o $(OUTPUT)util/pmu-bison.c -p perf_pmu_
 
-CFLAGS_parse-events-flex.o  += -w
-CFLAGS_pmu-flex.o           += -w
-CFLAGS_expr-flex.o          += -w
+flex_flags := -Wno-switch-enum -Wno-switch-default -Wno-unused-function -Wno-redundant-decls
+CFLAGS_parse-events-flex.o  += $(flex_flags)
+CFLAGS_pmu-flex.o           += $(flex_flags)
+CFLAGS_expr-flex.o          += $(flex_flags)
 CFLAGS_parse-events-bison.o += -DYYENABLE_NLS=0 -w
 CFLAGS_pmu-bison.o          += -DYYENABLE_NLS=0 -DYYLTYPE_IS_TRIVIAL=0 -w
 CFLAGS_expr-bison.o         += -DYYENABLE_NLS=0 -DYYLTYPE_IS_TRIVIAL=0 -w
-- 
2.27.0.278.ge193c7cf3a9-goog


^ permalink raw reply related	[flat|nested] 16+ messages in thread

* [PATCH 08/10] perf expr: Avoid implicit lex function declaration
  2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
                   ` (6 preceding siblings ...)
  2020-06-10 21:50 ` [PATCH 07/10] perf parse-events: Disable a subset of flex warnings Ian Rogers
@ 2020-06-10 21:50 ` Ian Rogers
  2020-06-10 21:50 ` [PATCH 09/10] perf parse-events: " Ian Rogers
                   ` (2 subsequent siblings)
  10 siblings, 0 replies; 16+ messages in thread
From: Ian Rogers @ 2020-06-10 21:50 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Andi Kleen, Jin Yao, John Garry, Adrian Hunter, linux-kernel
  Cc: Stephane Eranian, Ian Rogers

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


^ permalink raw reply related	[flat|nested] 16+ messages in thread

* [PATCH 09/10] perf parse-events: Avoid implicit lex function declaration
  2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
                   ` (7 preceding siblings ...)
  2020-06-10 21:50 ` [PATCH 08/10] perf expr: Avoid implicit lex function declaration Ian Rogers
@ 2020-06-10 21:50 ` Ian Rogers
  2020-06-10 21:51 ` [PATCH 10/10] perf parse-events: Disable a subset of bison warnings Ian Rogers
  2020-06-11  9:02 ` [PATCH 00/10] perf parse-events: enable more flex/bison warnings Jiri Olsa
  10 siblings, 0 replies; 16+ messages in thread
From: Ian Rogers @ 2020-06-10 21:50 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Andi Kleen, Jin Yao, John Garry, Adrian Hunter, linux-kernel
  Cc: Stephane Eranian, Ian Rogers

Add include and a dependency.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/Build          | 2 ++
 tools/perf/util/parse-events.y | 1 +
 2 files changed, 3 insertions(+)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index dc5b80ae39ac..68885bae466e 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -201,6 +201,8 @@ $(OUTPUT)util/parse-events-bison.c $(OUTPUT)util/parse-events-bison.h: util/pars
 	$(Q)$(call echo-cmd,bison)$(BISON) -v $< -d $(PARSER_DEBUG_BISON) \
 		-o $(OUTPUT)util/parse-events-bison.c -p parse_events_
 
+$(OUTPUT)util/parse-events-bison.o: $(OUTPUT)util/parse-events-flex.h
+
 $(OUTPUT)util/expr-flex.c $(OUTPUT)util/expr-flex.h: util/expr.l $(OUTPUT)util/expr-bison.c
 	$(call rule_mkdir)
 	$(Q)$(call echo-cmd,flex)$(FLEX) -o $(OUTPUT)util/expr-flex.c \
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index b9fb91fdc5de..d3294e76e7dc 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -17,6 +17,7 @@
 #include "evsel.h"
 #include "parse-events.h"
 #include "parse-events-bison.h"
+#include "parse-events-flex.h"
 
 void parse_events_error(YYLTYPE *loc, void *parse_state, void *scanner, char const *msg);
 
-- 
2.27.0.278.ge193c7cf3a9-goog


^ permalink raw reply related	[flat|nested] 16+ messages in thread

* [PATCH 10/10] perf parse-events: Disable a subset of bison warnings
  2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
                   ` (8 preceding siblings ...)
  2020-06-10 21:50 ` [PATCH 09/10] perf parse-events: " Ian Rogers
@ 2020-06-10 21:51 ` Ian Rogers
  2020-06-11  9:02 ` [PATCH 00/10] perf parse-events: enable more flex/bison warnings Jiri Olsa
  10 siblings, 0 replies; 16+ messages in thread
From: Ian Rogers @ 2020-06-10 21:51 UTC (permalink / raw)
  To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Jiri Olsa, Namhyung Kim,
	Andi Kleen, Jin Yao, John Garry, Adrian Hunter, linux-kernel
  Cc: Stephane Eranian, Ian Rogers

Rather than disable all warnings with -w, disable specific warnings.
Tested with GCC 9.3.0 and clang 9.0.1.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/Build | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 68885bae466e..c1f872ab7748 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -229,9 +229,10 @@ flex_flags := -Wno-switch-enum -Wno-switch-default -Wno-unused-function -Wno-red
 CFLAGS_parse-events-flex.o  += $(flex_flags)
 CFLAGS_pmu-flex.o           += $(flex_flags)
 CFLAGS_expr-flex.o          += $(flex_flags)
-CFLAGS_parse-events-bison.o += -DYYENABLE_NLS=0 -w
-CFLAGS_pmu-bison.o          += -DYYENABLE_NLS=0 -DYYLTYPE_IS_TRIVIAL=0 -w
-CFLAGS_expr-bison.o         += -DYYENABLE_NLS=0 -DYYLTYPE_IS_TRIVIAL=0 -w
+bison_flags := -DYYENABLE_NLS=0 -Wno-unused-parameter -Wno-nested-externs
+CFLAGS_parse-events-bison.o += $(bison_flags)
+CFLAGS_pmu-bison.o          += -DYYLTYPE_IS_TRIVIAL=0 $(bison_flags)
+CFLAGS_expr-bison.o         += -DYYLTYPE_IS_TRIVIAL=0 $(bison_flags)
 
 $(OUTPUT)util/parse-events.o: $(OUTPUT)util/parse-events-flex.c $(OUTPUT)util/parse-events-bison.c
 $(OUTPUT)util/pmu.o: $(OUTPUT)util/pmu-flex.c $(OUTPUT)util/pmu-bison.c
-- 
2.27.0.278.ge193c7cf3a9-goog


^ permalink raw reply related	[flat|nested] 16+ messages in thread

* Re: [PATCH 00/10] perf parse-events: enable more flex/bison warnings
  2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
                   ` (9 preceding siblings ...)
  2020-06-10 21:51 ` [PATCH 10/10] perf parse-events: Disable a subset of bison warnings Ian Rogers
@ 2020-06-11  9:02 ` Jiri Olsa
  2020-06-11 13:07   ` Arnaldo Carvalho de Melo
  10 siblings, 1 reply; 16+ messages in thread
From: Jiri Olsa @ 2020-06-11  9:02 UTC (permalink / raw)
  To: Ian Rogers
  Cc: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
	Mark Rutland, Alexander Shishkin, Namhyung Kim, Andi Kleen,
	Jin Yao, John Garry, Adrian Hunter, linux-kernel,
	Stephane Eranian

On Wed, Jun 10, 2020 at 02:50:50PM -0700, Ian Rogers wrote:
> All C compiler warnings are disabled are disabled by -w. This change
> removes the -w from flex and bison targets. To avoid implicit
> declarations header files are declared as targets and included.
> 
> Tested with GCC 9.3.0 and clang 9.0.1.
> 
> Previously posted as a single change:
> https://lore.kernel.org/lkml/20200609234344.3795-2-irogers@google.com/
> 
> Ian Rogers (10):
>   perf parse-events: Use automatic variable for flex input
>   perf parse-events: Use automatic variable for yacc input
>   perf pmu: Add bison debug build flag
>   perf pmu: Add flex debug build flag
>   perf parse-events: Declare flex header file output
>   perf parse-events: Declare bison header file output
>   perf parse-events: Disable a subset of flex warnings
>   perf expr: Avoid implicit lex function declaration
>   perf parse-events: Avoid implicit lex function declaration
>   perf parse-events: Disable a subset of bison warnings

looks great, I wonder what the -w replacement will do in
Arnaldo's distro test, but it'd be nice to get rid it

Acked-by: Jiri Olsa <jolsa@redhat.com>

thanks,
jirka

> 
>  tools/perf/util/Build          | 50 +++++++++++++++++++++-------------
>  tools/perf/util/expr.y         |  2 ++
>  tools/perf/util/parse-events.y |  1 +
>  3 files changed, 34 insertions(+), 19 deletions(-)
> 
> -- 
> 2.27.0.278.ge193c7cf3a9-goog
> 


^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [PATCH 00/10] perf parse-events: enable more flex/bison warnings
  2020-06-11  9:02 ` [PATCH 00/10] perf parse-events: enable more flex/bison warnings Jiri Olsa
@ 2020-06-11 13:07   ` Arnaldo Carvalho de Melo
  2020-06-11 13:38     ` Arnaldo Carvalho de Melo
  0 siblings, 1 reply; 16+ messages in thread
From: Arnaldo Carvalho de Melo @ 2020-06-11 13:07 UTC (permalink / raw)
  To: Jiri Olsa
  Cc: Ian Rogers, Peter Zijlstra, Ingo Molnar, Mark Rutland,
	Alexander Shishkin, Namhyung Kim, Andi Kleen, Jin Yao, John Garry,
	Adrian Hunter, linux-kernel, Stephane Eranian

Em Thu, Jun 11, 2020 at 11:02:49AM +0200, Jiri Olsa escreveu:
> On Wed, Jun 10, 2020 at 02:50:50PM -0700, Ian Rogers wrote:
> > All C compiler warnings are disabled are disabled by -w. This change
> > removes the -w from flex and bison targets. To avoid implicit
> > declarations header files are declared as targets and included.
> > 
> > Tested with GCC 9.3.0 and clang 9.0.1.
> > 
> > Previously posted as a single change:
> > https://lore.kernel.org/lkml/20200609234344.3795-2-irogers@google.com/
> > 
> > Ian Rogers (10):
> >   perf parse-events: Use automatic variable for flex input
> >   perf parse-events: Use automatic variable for yacc input
> >   perf pmu: Add bison debug build flag
> >   perf pmu: Add flex debug build flag
> >   perf parse-events: Declare flex header file output
> >   perf parse-events: Declare bison header file output
> >   perf parse-events: Disable a subset of flex warnings
> >   perf expr: Avoid implicit lex function declaration
> >   perf parse-events: Avoid implicit lex function declaration
> >   perf parse-events: Disable a subset of bison warnings
> 
> looks great, I wonder what the -w replacement will do in
> Arnaldo's distro test, but it'd be nice to get rid it
> 
> Acked-by: Jiri Olsa <jolsa@redhat.com>

Thanks, applied locally and will submit it to the test build suite.

- Arnaldo
 
> thanks,
> jirka
> 
> > 
> >  tools/perf/util/Build          | 50 +++++++++++++++++++++-------------
> >  tools/perf/util/expr.y         |  2 ++
> >  tools/perf/util/parse-events.y |  1 +
> >  3 files changed, 34 insertions(+), 19 deletions(-)
> > 
> > -- 
> > 2.27.0.278.ge193c7cf3a9-goog
> > 
> 

-- 

- Arnaldo

^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [PATCH 00/10] perf parse-events: enable more flex/bison warnings
  2020-06-11 13:07   ` Arnaldo Carvalho de Melo
@ 2020-06-11 13:38     ` Arnaldo Carvalho de Melo
  2020-06-11 13:40       ` Arnaldo Carvalho de Melo
  0 siblings, 1 reply; 16+ messages in thread
From: Arnaldo Carvalho de Melo @ 2020-06-11 13:38 UTC (permalink / raw)
  To: Ian Rogers, Jiri Olsa
  Cc: Peter Zijlstra, Ingo Molnar, Mark Rutland, Alexander Shishkin,
	Namhyung Kim, Andi Kleen, Jin Yao, John Garry, Adrian Hunter,
	linux-kernel, Stephane Eranian

Em Thu, Jun 11, 2020 at 10:07:58AM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Thu, Jun 11, 2020 at 11:02:49AM +0200, Jiri Olsa escreveu:
> > On Wed, Jun 10, 2020 at 02:50:50PM -0700, Ian Rogers wrote:
> > > All C compiler warnings are disabled are disabled by -w. This change
> > > removes the -w from flex and bison targets. To avoid implicit
> > > declarations header files are declared as targets and included.
> > > 
> > > Tested with GCC 9.3.0 and clang 9.0.1.
> > > 
> > > Previously posted as a single change:
> > > https://lore.kernel.org/lkml/20200609234344.3795-2-irogers@google.com/
> > > 
> > > Ian Rogers (10):
> > >   perf parse-events: Use automatic variable for flex input
> > >   perf parse-events: Use automatic variable for yacc input
> > >   perf pmu: Add bison debug build flag
> > >   perf pmu: Add flex debug build flag
> > >   perf parse-events: Declare flex header file output
> > >   perf parse-events: Declare bison header file output
> > >   perf parse-events: Disable a subset of flex warnings
> > >   perf expr: Avoid implicit lex function declaration
> > >   perf parse-events: Avoid implicit lex function declaration
> > >   perf parse-events: Disable a subset of bison warnings
> > 
> > looks great, I wonder what the -w replacement will do in
> > Arnaldo's distro test, but it'd be nice to get rid it
> > 
> > Acked-by: Jiri Olsa <jolsa@redhat.com>
> 
> Thanks, applied locally and will submit it to the test build suite.

Failed so far for, I'll leave it running, its a holiday here today, so
I'll be on this occasionally, please look until the end of the (long)
message, there are errors for more distros, some are, as expected the
same, but should give a good idea of some extra fixes needed.

[root@quaco ~]# export PERF_TARBALL=http://192.168.124.1/perf/perf-5.7.0.tar.xz
[root@quaco ~]# time dm
Thu 11 Jun 2020 10:18:52 AM -03
# export PERF_TARBALL=http://192.168.124.1/perf/perf-5.7.0.tar.xz
# dm 
   1 alpine:3.4                    : FAIL gcc (Alpine 5.3.0) 5.3.0, clang version 3.8.0 (tags/RELEASE_380/final)
   2 alpine:3.5                    : FAIL gcc (Alpine 6.2.1) 6.2.1 20160822, clang version 3.8.1 (tags/RELEASE_381/final)
   3 alpine:3.6                    : FAIL gcc (Alpine 6.3.0) 6.3.0, clang version 4.0.0 (tags/RELEASE_400/final)
   4 alpine:3.7                    : FAIL gcc (Alpine 6.4.0) 6.4.0, Alpine clang version 5.0.0 (tags/RELEASE_500/final) (based on LLVM 5.0.0)
   5 alpine:3.8                    : FAIL gcc (Alpine 6.4.0) 6.4.0, Alpine clang version 5.0.1 (tags/RELEASE_501/final) (based on LLVM 5.0.1)
   6 alpine:3.9                    : FAIL gcc (Alpine 8.3.0) 8.3.0, Alpine clang version 5.0.1 (tags/RELEASE_502/final) (based on LLVM 5.0.1)
   7 alpine:3.10                   : FAIL gcc (Alpine 8.3.0) 8.3.0, Alpine clang version 8.0.0 (tags/RELEASE_800/final) (based on LLVM 8.0.0)
   8 alpine:3.11                   : FAIL gcc (Alpine 9.2.0) 9.2.0, Alpine clang version 9.0.0 (https://git.alpinelinux.org/aports f7f0d2c2b8bcd6a5843401a9a702029556492689) (based on LLVM 9.0.0)
   9 alpine:3.12                   : FAIL gcc (Alpine 9.3.0) 9.3.0, Alpine clang version 10.0.0 (https://gitlab.alpinelinux.org/alpine/aports.git 7445adce501f8473efdb93b17b5eaf2f1445ed4c)
  10 alpine:edge                   : FAIL gcc (Alpine 9.3.0) 9.3.0, Alpine clang version 10.0.0 (git://git.alpinelinux.org/aports 7445adce501f8473efdb93b17b5eaf2f1445ed4c)

I.e. all alpine versions, its Musl Libc

  CC       /tmp/build/perf/util/pmu-bison.o
In file included from util/parse-events.y:20:0:
/tmp/build/perf/util/parse-events-flex.h:1:0: error: unterminated #ifndef
 #ifndef parse_events_HEADER_H
 ^
/tmp/build/perf/util/parse-events-bison.c: In function 'parse_events_parse':
/tmp/build/perf/util/parse-events-bison.c:64:25: error: implicit declaration of function 'parse_events_lex' [-Werror=implicit-function-declaration]
 #define yylex           parse_events_lex
                         ^
/tmp/build/perf/util/parse-events-bison.c:1679:16: note: in expansion of macro 'yylex'
       yychar = yylex (&yylval, &yylloc, scanner);
                ^
cc1: all warnings being treated as errors
mv: can't rename '/tmp/build/perf/util/.parse-events-bison.o.tmp': No such file or directory
/git/linux/tools/build/Makefile.build:96: recipe for target '/tmp/build/perf/util/parse-events-bison.o' failed
make[4]: *** [/tmp/build/perf/util/parse-events-bison.o] Error 1

But this is for 3.4, for 3.12 the error is one probably uncovered by these changes and we should fix:

  FLEX     /tmp/build/perf/util/parse-events-flex.c
  CC       /tmp/build/perf/util/parse-events-bison.o
In file included from util/parse-events.y:20:
/tmp/build/perf/util/parse-events-flex.h:1: error: unterminated #ifndef
    1 | #ifndef parse_events_HEADER_H
      | 
/tmp/build/perf/util/parse-events-bison.c: In function 'yydestruct':
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_YYEMPTY' not handled in switch [-Werror=switch-enum]
 1200 |   switch (yykind)
      |   ^~~~~~
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_YYEOF' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_YYerror' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_YYUNDEF' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_START_EVENTS' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_START_TERMS' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_VALUE' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_VALUE_SYM_HW' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_VALUE_SYM_SW' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_RAW' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_TERM' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_VALUE_SYM_TOOL' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_PREFIX_MEM' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_PREFIX_RAW' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_PREFIX_GROUP' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_ERROR' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_ARRAY_ALL' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_PE_ARRAY_RANGE' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_30_' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_31_' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_32_' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_33_' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_34_' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_35_' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_36_' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_37_' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_38_' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_YYACCEPT' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_start' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_start_events' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_value_sym' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_start_terms' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_sep_dc' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c:1200:3: error: enumeration value 'YYSYMBOL_sep_slash_slash_dc' not handled in switch [-Werror=switch-enum]
/tmp/build/perf/util/parse-events-bison.c: In function 'parse_events_parse':
/tmp/build/perf/util/parse-events-bison.c:69:25: error: implicit declaration of function 'parse_events_lex'; did you mean 'parse_events_name'? [-Werror=implicit-function-declaration]
   69 | #define yylex           parse_events_lex
      |                         ^~~~~~~~~~~~~~~~
/tmp/build/perf/util/parse-events-bison.c:1643:16: note: in expansion of macro 'yylex'
 1643 |       yychar = yylex (&yylval, &yylloc, scanner);
      |                ^~~~~
  FLEX     /tmp/build/perf/util/pmu-flex.c
cc1: all warnings being treated as errors
mv: can't rename '/tmp/build/perf/util/.parse-events-bison.o.tmp': No such file or directory
make[4]: *** [/git/linux/tools/build/Makefile.build:97: /tmp/build/perf/util/parse-events-bison.o] Error 1
make[4]: *** Waiting for unfinished jobs....
  LD       /tmp/build/perf/util/intel-pt-decoder/perf-in.o
make[3]: *** [/git/linux/tools/build/Makefile.build:139: util] Error 2
make[2]: *** [Makefile.perf:625: /tmp/build/perf/perf-in.o] Error 2
make[1]: *** [Makefile.perf:231: sub-make] Error 2
make: *** [Makefile:70: all] Error 2
make: Leaving directory '/git/linux/tools/perf'
+ exit 1
[root@quaco ~]# 

Should we disable this -Werror=switch-enum?


And:

  11 alt:p8                        : FAIL x86_64-alt-linux-gcc (GCC) 5.3.1 20151207 (ALT p8 5.3.1-alt3.M80P.1), clang version 3.8.0 (tags/RELEASE_380/final)

Alt Linux as well, different error, this one seems to be one perhaps
uncovered by enabling the warnings when building those files, which is
good, right?

util/parse-events.l: In function 'parse_events_lex':
/tmp/build/perf/util/parse-events-flex.c:217:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:235:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^
util/parse-events.l:243:4: note: in expansion of macro 'REWIND'
    REWIND(0);
    ^
/tmp/build/perf/util/parse-events-flex.c:217:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:235:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^
util/parse-events.l:251:4: note: in expansion of macro 'REWIND'
    REWIND(1);
    ^
/tmp/build/perf/util/parse-events-flex.c:217:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:235:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^
util/parse-events.l:257:4: note: in expansion of macro 'REWIND'
    REWIND(0);
    ^
  CC       /tmp/build/perf/util/expr-flex.o
  CC       /tmp/build/perf/util/expr-bison.o
  CC       /tmp/build/perf/util/expr.o
cc1: all warnings being treated as errors
mv: cannot stat '/tmp/build/perf/util/.parse-events-flex.o.tmp': No such file or directory


-=--------------------------------------------------------------------------------------------------------------------


  12  alt:p9                        : Ok   x86_64-alt-linux-gcc (GCC) 8.4.1 20200305 (ALT p9 8.4.1-alt0.p9.1), clang version 7.0.1 

Alt Linux p9 is a modern distro, so must have all that is needed, built
with both gcc and clang without problems, here are the logs for building
with GCC with NO_LIBBPF=1 and then, after that, for clang building with
everything:

make ARCH= CROSS_COMPILE= EXTRA_CFLAGS= NO_LIBBPF=1 -C /git/linux/tools/perf O=/tmp/build/perf
make: Entering directory '/git/linux/tools/perf'
  BUILD:   Doing 'make -j8' parallel build
  HOSTCC   /tmp/build/perf/fixdep.o
  HOSTLD   /tmp/build/perf/fixdep-in.o
  LINK     /tmp/build/perf/fixdep

Auto-detecting system features:
...                         dwarf: [ on  ]
...            dwarf_getlocations: [ on  ]
...                         glibc: [ on  ]
...                          gtk2: [ on  ]
...                        libbfd: [ on  ]
...                        libcap: [ on  ]
...                        libelf: [ on  ]
...                       libnuma: [ on  ]
...        numa_num_possible_cpus: [ on  ]
...                       libperl: [ on  ]
...                     libpython: [ OFF ]
...                     libcrypto: [ on  ]
...                     libunwind: [ on  ]
...            libdw-dwarf-unwind: [ on  ]
...                          zlib: [ on  ]
...                          lzma: [ on  ]
...                     get_cpuid: [ on  ]
...                           bpf: [ on  ]
...                        libaio: [ on  ]
...                       libzstd: [ on  ]
...        disassembler-four-args: [ on  ]

Makefile.config:536: No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev
Makefile.config:773: No 'Python.h' (for Python 2.x support) was found: disables Python support - please install python-devel/python-dev
Makefile.config:945: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev
Makefile.config:971: No alternatives command found, you need to set JDIR= to point to the root of your Java directory
  GEN      /tmp/build/perf/common-cmds.h
  PERF_VERSION = 5.7.gc3d44cd87052
  MKDIR    /tmp/build/perf/fd/
  CC       /tmp/build/perf/exec-cmd.o
  CC       /tmp/build/perf/fd/array.o
  CC       /tmp/build/perf/event-parse.o
  CC       /tmp/build/perf/core.o
  CC       /tmp/build/perf/cpumap.o
  CC       /tmp/build/perf/threadmap.o
  CC       /tmp/build/perf/help.o
  MKDIR    /tmp/build/perf/fs/
  CC       /tmp/build/perf/fs/fs.o
  LD       /tmp/build/perf/fd/libapi-in.o
  CC       /tmp/build/perf/event-plugin.o
  CC       /tmp/build/perf/cpu.o
  CC       /tmp/build/perf/debug.o
  CC       /tmp/build/perf/evsel.o
  CC       /tmp/build/perf/pager.o
  CC       /tmp/build/perf/str_error_r.o
  MKDIR    /tmp/build/perf/fs/
  CC       /tmp/build/perf/fs/tracing_path.o
  CC       /tmp/build/perf/fs/cgroup.o
  CC       /tmp/build/perf/trace-seq.o
  CC       /tmp/build/perf/parse-options.o
  CC       /tmp/build/perf/run-command.o
  LD       /tmp/build/perf/fs/libapi-in.o
  CC       /tmp/build/perf/sigchain.o
  LD       /tmp/build/perf/libapi-in.o
  AR       /tmp/build/perf/libapi.a
  CC       /tmp/build/perf/subcmd-config.o
  CC       /tmp/build/perf/evlist.o
  CC       /tmp/build/perf/mmap.o
  CC       /tmp/build/perf/zalloc.o
  CC       /tmp/build/perf/parse-filter.o
  CC       /tmp/build/perf/parse-utils.o
  CC       /tmp/build/perf/xyarray.o
  CC       /tmp/build/perf/lib.o
  CC       /tmp/build/perf/kbuffer-parse.o
  CC       /tmp/build/perf/tep_strerror.o
  CC       /tmp/build/perf/event-parse-api.o
  GEN      perf-archive
  MKDIR    /tmp/build/perf/pmu-events/
  GEN      perf-with-kcore
  HOSTCC   /tmp/build/perf/pmu-events/json.o
  MKDIR    /tmp/build/perf/pmu-events/
  MKDIR    /tmp/build/perf/ui/gtk/
  HOSTCC   /tmp/build/perf/pmu-events/jsmn.o
  CC       /tmp/build/perf/ui/gtk/browser.o
  LD       /tmp/build/perf/libtraceevent-in.o
  CC       /tmp/build/perf/plugin_jbd2.o
  LINK     /tmp/build/perf/libtraceevent.a
  CC       /tmp/build/perf/plugin_hrtimer.o
  LD       /tmp/build/perf/libperf-in.o
  HOSTCC   /tmp/build/perf/pmu-events/jevents.o
  MKDIR    /tmp/build/perf/ui/gtk/
  CC       /tmp/build/perf/ui/gtk/hists.o
  LD       /tmp/build/perf/plugin_jbd2-in.o
  AR       /tmp/build/perf/libperf.a
  CC       /tmp/build/perf/plugin_kmem.o
  LD       /tmp/build/perf/plugin_hrtimer-in.o
  CC       /tmp/build/perf/plugin_kvm.o
  CC       /tmp/build/perf/plugin_mac80211.o
  LD       /tmp/build/perf/plugin_kmem-in.o
  CC       /tmp/build/perf/plugin_sched_switch.o
  LD       /tmp/build/perf/libsubcmd-in.o
  LD       /tmp/build/perf/plugin_mac80211-in.o
  AR       /tmp/build/perf/libsubcmd.a
  CC       /tmp/build/perf/ui/gtk/setup.o
  LD       /tmp/build/perf/plugin_kvm-in.o
  CC       /tmp/build/perf/ui/gtk/util.o
  CC       /tmp/build/perf/plugin_function.o
  LD       /tmp/build/perf/plugin_sched_switch-in.o
  CC       /tmp/build/perf/plugin_xen.o
  HOSTLD   /tmp/build/perf/pmu-events/jevents-in.o
  LD       /tmp/build/perf/plugin_function-in.o
  LINK     /tmp/build/perf/pmu-events/jevents
  CC       /tmp/build/perf/ui/gtk/helpline.o
  LD       /tmp/build/perf/plugin_xen-in.o
  CC       /tmp/build/perf/plugin_scsi.o
  GEN      /tmp/build/perf/pmu-events/pmu-events.c
  LD       /tmp/build/perf/plugin_scsi-in.o
  CC       /tmp/build/perf/plugin_cfg80211.o
  LD       /tmp/build/perf/plugin_cfg80211-in.o
  LINK     /tmp/build/perf/plugin_jbd2.so
  LINK     /tmp/build/perf/plugin_hrtimer.so
  LINK     /tmp/build/perf/plugin_kmem.so
  CC       /tmp/build/perf/ui/gtk/progress.o
  LINK     /tmp/build/perf/plugin_kvm.so
  LINK     /tmp/build/perf/plugin_mac80211.so
  LINK     /tmp/build/perf/plugin_sched_switch.so
  CC       /tmp/build/perf/pmu-events/pmu-events.o
  LINK     /tmp/build/perf/plugin_function.so
  LINK     /tmp/build/perf/plugin_xen.so
  CC       /tmp/build/perf/ui/gtk/annotate.o
  LINK     /tmp/build/perf/plugin_scsi.so
  LINK     /tmp/build/perf/plugin_cfg80211.so
  CC       /tmp/build/perf/ui/gtk/zalloc.o
  GEN      /tmp/build/perf/libtraceevent-dynamic-list
  CC       /tmp/build/perf/builtin-bench.o
  CC       /tmp/build/perf/builtin-annotate.o
  CC       /tmp/build/perf/builtin-config.o
  CC       /tmp/build/perf/builtin-diff.o
  CC       /tmp/build/perf/builtin-evlist.o
  CC       /tmp/build/perf/builtin-ftrace.o
  CC       /tmp/build/perf/builtin-help.o
  CC       /tmp/build/perf/builtin-sched.o
  CC       /tmp/build/perf/builtin-buildid-list.o
  LD       /tmp/build/perf/pmu-events/pmu-events-in.o
  CC       /tmp/build/perf/builtin-buildid-cache.o
  CC       /tmp/build/perf/builtin-kallsyms.o
  CC       /tmp/build/perf/builtin-list.o
  CC       /tmp/build/perf/builtin-record.o
  CC       /tmp/build/perf/builtin-report.o
  LD       /tmp/build/perf/ui/gtk/gtk-in.o
  CC       /tmp/build/perf/builtin-stat.o
  CC       /tmp/build/perf/builtin-timechart.o
  LD       /tmp/build/perf/gtk-in.o
  LINK     /tmp/build/perf/libperf-gtk.so
  CC       /tmp/build/perf/builtin-top.o
  CC       /tmp/build/perf/builtin-script.o
  CC       /tmp/build/perf/builtin-kmem.o
  CC       /tmp/build/perf/builtin-lock.o
  CC       /tmp/build/perf/builtin-kvm.o
  CC       /tmp/build/perf/builtin-inject.o
  CC       /tmp/build/perf/builtin-mem.o
  CC       /tmp/build/perf/builtin-data.o
  CC       /tmp/build/perf/builtin-version.o
  CC       /tmp/build/perf/builtin-c2c.o
  CC       /tmp/build/perf/builtin-trace.o
  CC       /tmp/build/perf/builtin-probe.o
  MKDIR    /tmp/build/perf/bench/
  CC       /tmp/build/perf/bench/sched-messaging.o
  MKDIR    /tmp/build/perf/tests/
  CC       /tmp/build/perf/tests/builtin-test.o
  MKDIR    /tmp/build/perf/util/
  CC       /tmp/build/perf/util/annotate.o
  MKDIR    /tmp/build/perf/bench/
  CC       /tmp/build/perf/bench/sched-pipe.o
  MKDIR    /tmp/build/perf/util/
  CC       /tmp/build/perf/util/block-info.o
  CC       /tmp/build/perf/bench/mem-functions.o
  CC       /tmp/build/perf/arch/common.o
  MKDIR    /tmp/build/perf/tests/
  CC       /tmp/build/perf/tests/parse-events.o
  MKDIR    /tmp/build/perf/arch/x86/util/
  CC       /tmp/build/perf/arch/x86/util/header.o
  CC       /tmp/build/perf/bench/futex-hash.o
  MKDIR    /tmp/build/perf/arch/x86/util/
  CC       /tmp/build/perf/arch/x86/util/tsc.o
  CC       /tmp/build/perf/bench/futex-wake.o
  CC       /tmp/build/perf/arch/x86/util/pmu.o
  MKDIR    /tmp/build/perf/arch/x86/tests/
  CC       /tmp/build/perf/arch/x86/tests/regs_load.o
  MKDIR    /tmp/build/perf/arch/x86/tests/
  CC       /tmp/build/perf/arch/x86/tests/dwarf-unwind.o
  CC       /tmp/build/perf/arch/x86/util/kvm-stat.o
  CC       /tmp/build/perf/bench/futex-wake-parallel.o
  CC       /tmp/build/perf/arch/x86/tests/arch-tests.o
  CC       /tmp/build/perf/ui/setup.o
  CC       /tmp/build/perf/arch/x86/util/perf_regs.o
  CC       /tmp/build/perf/arch/x86/tests/rdpmc.o
  CC       /tmp/build/perf/ui/helpline.o
  CC       /tmp/build/perf/bench/futex-requeue.o
  CC       /tmp/build/perf/arch/x86/util/group.o
  CC       /tmp/build/perf/arch/x86/tests/perf-time-to-tsc.o
  MKDIR    /tmp/build/perf/scripts/perl/Perf-Trace-Util/
  CC       /tmp/build/perf/scripts/perl/Perf-Trace-Util/Context.o
  CC       /tmp/build/perf/arch/x86/util/machine.o
  CC       /tmp/build/perf/ui/progress.o
  CC       /tmp/build/perf/bench/futex-lock-pi.o
  CC       /tmp/build/perf/ui/util.o
  CC       /tmp/build/perf/arch/x86/tests/insn-x86.o
  CC       /tmp/build/perf/arch/x86/util/event.o
  CC       /tmp/build/perf/ui/hist.o
  CC       /tmp/build/perf/bench/epoll-wait.o
  CC       /tmp/build/perf/tests/dso-data.o
  CC       /tmp/build/perf/arch/x86/util/dwarf-regs.o
  CC       /tmp/build/perf/arch/x86/tests/intel-pt-pkt-decoder-test.o
  CC       /tmp/build/perf/arch/x86/util/unwind-libunwind.o
  CC       /tmp/build/perf/arch/x86/util/auxtrace.o
  CC       /tmp/build/perf/arch/x86/tests/bp-modify.o
  CC       /tmp/build/perf/util/block-range.o
  LD       /tmp/build/perf/scripts/perl/Perf-Trace-Util/perf-in.o
  LD       /tmp/build/perf/scripts/perf-in.o
  CC       /tmp/build/perf/util/build-id.o
  CC       /tmp/build/perf/bench/epoll-ctl.o
  CC       /tmp/build/perf/tests/attr.o
  CC       /tmp/build/perf/arch/x86/util/archinsn.o
  LD       /tmp/build/perf/arch/x86/tests/perf-in.o
  CC       /tmp/build/perf/arch/x86/util/intel-pt.o
  CC       /tmp/build/perf/util/cacheline.o
  CC       /tmp/build/perf/arch/x86/util/intel-bts.o
  CC       /tmp/build/perf/util/config.o
  CC       /tmp/build/perf/bench/synthesize.o
  CC       /tmp/build/perf/tests/vmlinux-kallsyms.o
  CC       /tmp/build/perf/bench/kallsyms-parse.o
  CC       /tmp/build/perf/tests/openat-syscall.o
  CC       /tmp/build/perf/tests/openat-syscall-all-cpus.o
  CC       /tmp/build/perf/util/copyfile.o
  CC       /tmp/build/perf/bench/mem-memcpy-x86-64-lib.o
  CC       /tmp/build/perf/tests/openat-syscall-tp-fields.o
  CC       /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o
  CC       /tmp/build/perf/tests/mmap-basic.o
  CC       /tmp/build/perf/tests/perf-record.o
  CC       /tmp/build/perf/bench/mem-memset-x86-64-asm.o
  LD       /tmp/build/perf/arch/x86/util/perf-in.o
  CC       /tmp/build/perf/bench/numa.o
  CC       /tmp/build/perf/util/ctype.o
  LD       /tmp/build/perf/arch/x86/perf-in.o
  LD       /tmp/build/perf/arch/perf-in.o
  CC       /tmp/build/perf/trace/beauty/clone.o
  CC       /tmp/build/perf/perf.o
  CC       /tmp/build/perf/util/db-export.o
  CC       /tmp/build/perf/tests/evsel-roundtrip-name.o
  CC       /tmp/build/perf/tests/evsel-tp-sched.o
  CC       /tmp/build/perf/trace/beauty/fcntl.o
  CC       /tmp/build/perf/tests/fdarray.o
  CC       /tmp/build/perf/tests/pmu.o
  CC       /tmp/build/perf/trace/beauty/flock.o
  CC       /tmp/build/perf/tests/pmu-events.o
  CC       /tmp/build/perf/tests/hists_common.o
  CC       /tmp/build/perf/trace/beauty/fsmount.o
  CC       /tmp/build/perf/tests/hists_link.o
  CC       /tmp/build/perf/tests/hists_filter.o
  CC       /tmp/build/perf/trace/beauty/fspick.o
  CC       /tmp/build/perf/util/env.o
  CC       /tmp/build/perf/trace/beauty/ioctl.o
  CC       /tmp/build/perf/tests/hists_output.o
  CC       /tmp/build/perf/trace/beauty/kcmp.o
  MKDIR    /tmp/build/perf/ui/stdio/
  CC       /tmp/build/perf/ui/stdio/hist.o
  CC       /tmp/build/perf/tests/hists_cumulate.o
  CC       /tmp/build/perf/util/event.o
  CC       /tmp/build/perf/trace/beauty/mount_flags.o
  CC       /tmp/build/perf/trace/beauty/move_mount.o
  CC       /tmp/build/perf/trace/beauty/pkey_alloc.o
  CC       /tmp/build/perf/tests/python-use.o
  CC       /tmp/build/perf/tests/bp_signal.o
  LD       /tmp/build/perf/bench/perf-in.o
  CC       /tmp/build/perf/tests/bp_signal_overflow.o
  CC       /tmp/build/perf/tests/bp_account.o
  CC       /tmp/build/perf/ui/browser.o
  MKDIR    /tmp/build/perf/ui/browsers/
  CC       /tmp/build/perf/ui/browsers/annotate.o
  MKDIR    /tmp/build/perf/ui/browsers/
  CC       /tmp/build/perf/ui/browsers/hists.o
  CC       /tmp/build/perf/ui/browsers/map.o
  CC       /tmp/build/perf/ui/browsers/scripts.o
  CC       /tmp/build/perf/ui/browsers/header.o
  CC       /tmp/build/perf/ui/browsers/res_sample.o
  MKDIR    /tmp/build/perf/ui/tui/
  CC       /tmp/build/perf/ui/tui/setup.o
  MKDIR    /tmp/build/perf/ui/tui/
  CC       /tmp/build/perf/ui/tui/util.o
  CC       /tmp/build/perf/ui/tui/helpline.o
  CC       /tmp/build/perf/ui/tui/progress.o
  LD       /tmp/build/perf/ui/tui/perf-in.o
  CC       /tmp/build/perf/util/evlist.o
  CC       /tmp/build/perf/tests/wp.o
  CC       /tmp/build/perf/util/sideband_evlist.o
  CC       /tmp/build/perf/trace/beauty/arch_prctl.o
  CC       /tmp/build/perf/tests/task-exit.o
  CC       /tmp/build/perf/util/evsel.o
  CC       /tmp/build/perf/trace/beauty/prctl.o
  CC       /tmp/build/perf/trace/beauty/renameat.o
  CC       /tmp/build/perf/trace/beauty/sockaddr.o
  CC       /tmp/build/perf/util/evsel_fprintf.o
  CC       /tmp/build/perf/tests/sw-clock.o
  CC       /tmp/build/perf/util/perf_event_attr_fprintf.o
  CC       /tmp/build/perf/tests/mmap-thread-lookup.o
  CC       /tmp/build/perf/trace/beauty/socket.o
  CC       /tmp/build/perf/trace/beauty/statx.o
  CC       /tmp/build/perf/tests/thread-maps-share.o
  CC       /tmp/build/perf/util/evswitch.o
  CC       /tmp/build/perf/trace/beauty/sync_file_range.o
  CC       /tmp/build/perf/util/find_bit.o
  CC       /tmp/build/perf/tests/switch-tracking.o
  MKDIR    /tmp/build/perf/trace/beauty/tracepoints/
  CC       /tmp/build/perf/trace/beauty/tracepoints/x86_irq_vectors.o
  CC       /tmp/build/perf/tests/keep-tracking.o
  CC       /tmp/build/perf/util/get_current_dir_name.o
  MKDIR    /tmp/build/perf/trace/beauty/tracepoints/
  CC       /tmp/build/perf/util/kallsyms.o
  CC       /tmp/build/perf/trace/beauty/tracepoints/x86_msr.o
  CC       /tmp/build/perf/util/levenshtein.o
  LD       /tmp/build/perf/trace/beauty/tracepoints/perf-in.o
  LD       /tmp/build/perf/trace/beauty/perf-in.o
  CC       /tmp/build/perf/util/llvm-utils.o
  CC       /tmp/build/perf/util/mmap.o
  CC       /tmp/build/perf/tests/code-reading.o
  CC       /tmp/build/perf/util/memswap.o
  CC       /tmp/build/perf/tests/sample-parsing.o
  BISON    /tmp/build/perf/util/parse-events-bison.c
  CC       /tmp/build/perf/util/perf_regs.o
  CC       /tmp/build/perf/tests/parse-no-sample-id-all.o
  CC       /tmp/build/perf/tests/kmod-path.o
  CC       /tmp/build/perf/util/path.o
  CC       /tmp/build/perf/tests/thread-map.o
  CC       /tmp/build/perf/util/print_binary.o
  CC       /tmp/build/perf/tests/llvm.o
  CC       /tmp/build/perf/util/rlimit.o
  CC       /tmp/build/perf/util/argv_split.o
  CC       /tmp/build/perf/tests/bpf.o
  CC       /tmp/build/perf/util/rbtree.o
  CC       /tmp/build/perf/util/libstring.o
  CC       /tmp/build/perf/tests/topology.o
  CC       /tmp/build/perf/util/bitmap.o
  CC       /tmp/build/perf/util/hweight.o
  LD       /tmp/build/perf/ui/browsers/perf-in.o
  CC       /tmp/build/perf/tests/mem.o
  CC       /tmp/build/perf/util/smt.o
  CC       /tmp/build/perf/tests/cpumap.o
  CC       /tmp/build/perf/util/strbuf.o
  LD       /tmp/build/perf/ui/perf-in.o
  CC       /tmp/build/perf/util/string.o
  CC       /tmp/build/perf/util/strlist.o
  CC       /tmp/build/perf/util/strfilter.o
  CC       /tmp/build/perf/tests/stat.o
  CC       /tmp/build/perf/tests/event_update.o
  CC       /tmp/build/perf/util/top.o
  CC       /tmp/build/perf/tests/event-times.o
  CC       /tmp/build/perf/util/usage.o
  CC       /tmp/build/perf/util/dso.o
  CC       /tmp/build/perf/util/dsos.o
  CC       /tmp/build/perf/tests/expr.o
  CC       /tmp/build/perf/util/symbol.o
  CC       /tmp/build/perf/tests/backward-ring-buffer.o
  CC       /tmp/build/perf/util/symbol_fprintf.o
  CC       /tmp/build/perf/tests/sdt.o
  CC       /tmp/build/perf/tests/is_printable_array.o
  CC       /tmp/build/perf/util/color.o
  CC       /tmp/build/perf/tests/bitmap.o
  CC       /tmp/build/perf/tests/perf-hooks.o
  CC       /tmp/build/perf/tests/clang.o
  CC       /tmp/build/perf/util/color_config.o
  CC       /tmp/build/perf/tests/unit_number__scnprintf.o
  CC       /tmp/build/perf/tests/mem2node.o
  CC       /tmp/build/perf/tests/maps.o
  CC       /tmp/build/perf/tests/time-utils-test.o
  CC       /tmp/build/perf/util/metricgroup.o
  CC       /tmp/build/perf/tests/genelf.o
  CC       /tmp/build/perf/util/header.o
  CC       /tmp/build/perf/util/callchain.o
  CC       /tmp/build/perf/tests/api-io.o
  CC       /tmp/build/perf/tests/demangle-java-test.o
  CC       /tmp/build/perf/util/values.o
  CC       /tmp/build/perf/tests/pfm.o
  CC       /tmp/build/perf/tests/parse-metric.o
  CC       /tmp/build/perf/tests/dwarf-unwind.o
  CC       /tmp/build/perf/tests/llvm-src-base.o
  CC       /tmp/build/perf/tests/llvm-src-kbuild.o
  CC       /tmp/build/perf/tests/llvm-src-prologue.o
  CC       /tmp/build/perf/util/debug.o
  CC       /tmp/build/perf/tests/llvm-src-relocation.o
  CC       /tmp/build/perf/util/fncache.o
  CC       /tmp/build/perf/util/machine.o
  CC       /tmp/build/perf/util/map.o
  LD       /tmp/build/perf/tests/perf-in.o
  CC       /tmp/build/perf/util/pstack.o
  CC       /tmp/build/perf/util/session.o
  CC       /tmp/build/perf/util/sample-raw.o
  CC       /tmp/build/perf/util/s390-sample-raw.o
  CC       /tmp/build/perf/util/syscalltbl.o
  CC       /tmp/build/perf/util/ordered-events.o
  CC       /tmp/build/perf/util/namespaces.o
  CC       /tmp/build/perf/util/comm.o
  CC       /tmp/build/perf/util/thread.o
  CC       /tmp/build/perf/util/thread_map.o
  CC       /tmp/build/perf/util/trace-event-parse.o
  FLEX     /tmp/build/perf/util/parse-events-flex.h
  BISON    /tmp/build/perf/util/pmu-bison.c
  CC       /tmp/build/perf/util/trace-event-read.o
  CC       /tmp/build/perf/util/trace-event-info.o
  CC       /tmp/build/perf/util/trace-event-scripting.o
  CC       /tmp/build/perf/util/trace-event.o
  CC       /tmp/build/perf/util/svghelper.o
  CC       /tmp/build/perf/util/sort.o
  CC       /tmp/build/perf/util/hist.o
  CC       /tmp/build/perf/util/util.o
  CC       /tmp/build/perf/util/cpumap.o
  CC       /tmp/build/perf/util/affinity.o
  CC       /tmp/build/perf/util/cputopo.o
  CC       /tmp/build/perf/util/cgroup.o
  CC       /tmp/build/perf/util/target.o
  CC       /tmp/build/perf/util/rblist.o
  CC       /tmp/build/perf/util/intlist.o
  CC       /tmp/build/perf/util/vdso.o
  CC       /tmp/build/perf/util/counts.o
  CC       /tmp/build/perf/util/stat.o
  CC       /tmp/build/perf/util/stat-shadow.o
  CC       /tmp/build/perf/util/stat-display.o
  CC       /tmp/build/perf/util/perf_api_probe.o
  CC       /tmp/build/perf/util/record.o
  CC       /tmp/build/perf/util/srcline.o
  CC       /tmp/build/perf/util/srccode.o
  CC       /tmp/build/perf/util/synthetic-events.o
  CC       /tmp/build/perf/util/data.o
  CC       /tmp/build/perf/util/tsc.o
  CC       /tmp/build/perf/util/cloexec.o
  CC       /tmp/build/perf/util/call-path.o
  CC       /tmp/build/perf/util/rwsem.o
  CC       /tmp/build/perf/util/thread-stack.o
  CC       /tmp/build/perf/util/spark.o
  CC       /tmp/build/perf/util/auxtrace.o
  MKDIR    /tmp/build/perf/util/intel-pt-decoder/
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.o
  MKDIR    /tmp/build/perf/util/arm-spe-decoder/
  CC       /tmp/build/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.o
  MKDIR    /tmp/build/perf/util/scripting-engines/
  CC       /tmp/build/perf/util/scripting-engines/trace-event-perl.o
  CC       /tmp/build/perf/util/intel-pt.o
  MKDIR    /tmp/build/perf/util/arm-spe-decoder/
  CC       /tmp/build/perf/util/arm-spe-decoder/arm-spe-decoder.o
  CC       /tmp/build/perf/util/intel-bts.o
  MKDIR    /tmp/build/perf/util/intel-pt-decoder/
  GEN      /tmp/build/perf/util/intel-pt-decoder/inat-tables.c
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-log.o
  LD       /tmp/build/perf/util/arm-spe-decoder/perf-in.o
  CC       /tmp/build/perf/util/arm-spe.o
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-decoder.o
  CC       /tmp/build/perf/util/s390-cpumsf.o
  CC       /tmp/build/perf/util/parse-branch-options.o
  CC       /tmp/build/perf/util/dump-insn.o
  CC       /tmp/build/perf/util/parse-regs-options.o
  CC       /tmp/build/perf/util/term.o
  CC       /tmp/build/perf/util/help-unknown-cmd.o
  CC       /tmp/build/perf/util/mem-events.o
  CC       /tmp/build/perf/util/vsprintf.o
  LD       /tmp/build/perf/util/scripting-engines/perf-in.o
  CC       /tmp/build/perf/util/units.o
  CC       /tmp/build/perf/util/time-utils.o
  BISON    /tmp/build/perf/util/expr-bison.c
  CC       /tmp/build/perf/util/branch.o
  CC       /tmp/build/perf/util/mem2node.o
  CC       /tmp/build/perf/util/symbol-elf.o
  CC       /tmp/build/perf/util/probe-file.o
  CC       /tmp/build/perf/util/probe-event.o
  CC       /tmp/build/perf/util/probe-finder.o
  CC       /tmp/build/perf/util/hashmap.o
  CC       /tmp/build/perf/util/dwarf-aux.o
  CC       /tmp/build/perf/util/dwarf-regs.o
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-insn-decoder.o
  CC       /tmp/build/perf/util/unwind-libunwind-local.o
  CC       /tmp/build/perf/util/unwind-libunwind.o
  CC       /tmp/build/perf/util/zlib.o
  CC       /tmp/build/perf/util/lzma.o
  CC       /tmp/build/perf/util/zstd.o
  CC       /tmp/build/perf/util/cap.o
  CC       /tmp/build/perf/util/demangle-java.o
  CC       /tmp/build/perf/util/demangle-rust.o
  CC       /tmp/build/perf/util/jitdump.o
  CC       /tmp/build/perf/util/genelf.o
  LD       /tmp/build/perf/util/intel-pt-decoder/perf-in.o
  CC       /tmp/build/perf/util/genelf_debug.o
  CC       /tmp/build/perf/util/perf-hooks.o
  FLEX     /tmp/build/perf/util/parse-events-flex.c
  CC       /tmp/build/perf/util/parse-events-bison.o
  FLEX     /tmp/build/perf/util/pmu-flex.c
  CC       /tmp/build/perf/util/pmu-bison.o
  FLEX     /tmp/build/perf/util/expr-flex.c
  FLEX     /tmp/build/perf/util/expr-flex.h
  CC       /tmp/build/perf/util/parse-events.o
  CC       /tmp/build/perf/util/parse-events-flex.o
  CC       /tmp/build/perf/util/pmu.o
  CC       /tmp/build/perf/util/pmu-flex.o
  CC       /tmp/build/perf/util/expr-flex.o
  CC       /tmp/build/perf/util/expr-bison.o
  CC       /tmp/build/perf/util/expr.o
  LD       /tmp/build/perf/util/perf-in.o
  LD       /tmp/build/perf/perf-in.o
  LINK     /tmp/build/perf/perf
make: Leaving directory '/git/linux/tools/perf'
+ set +o xtrace
clang version 7.0.1 
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: /usr/bin/../lib/gcc/i586-alt-linux/8
Found candidate GCC installation: /usr/bin/../lib64/gcc/x86_64-alt-linux/8
Found candidate GCC installation: /usr/lib/gcc/i586-alt-linux/8
Found candidate GCC installation: /usr/lib64/gcc/x86_64-alt-linux/8
Selected GCC installation: /usr/bin/../lib64/gcc/x86_64-alt-linux/8
Candidate multilib: .;@m64
Selected multilib: .;@m64
+ make ARCH= CROSS_COMPILE= EXTRA_CFLAGS= -C /git/linux/tools/perf O=/tmp/build/perf CC=clang
make: Entering directory '/git/linux/tools/perf'
  BUILD:   Doing 'make -j8' parallel build
  HOSTCC   /tmp/build/perf/fixdep.o
  HOSTLD   /tmp/build/perf/fixdep-in.o
  LINK     /tmp/build/perf/fixdep

Auto-detecting system features:
...                         dwarf: [ on  ]
...            dwarf_getlocations: [ on  ]
...                         glibc: [ on  ]
...                          gtk2: [ on  ]
...                        libbfd: [ on  ]
...                        libcap: [ on  ]
...                        libelf: [ on  ]
...                       libnuma: [ on  ]
...        numa_num_possible_cpus: [ on  ]
...                       libperl: [ on  ]
...                     libpython: [ OFF ]
...                     libcrypto: [ on  ]
...                     libunwind: [ on  ]
...            libdw-dwarf-unwind: [ on  ]
...                          zlib: [ on  ]
...                          lzma: [ on  ]
...                     get_cpuid: [ on  ]
...                           bpf: [ on  ]
...                        libaio: [ on  ]
...                       libzstd: [ on  ]
...        disassembler-four-args: [ on  ]

Makefile.config:536: No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev
Makefile.config:773: No 'Python.h' (for Python 2.x support) was found: disables Python support - please install python-devel/python-dev
Makefile.config:945: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev
Makefile.config:971: No alternatives command found, you need to set JDIR= to point to the root of your Java directory
  GEN      /tmp/build/perf/common-cmds.h
  PERF_VERSION = 5.7.gc3d44cd87052
  CC       /tmp/build/perf/exec-cmd.o
  MKDIR    /tmp/build/perf/fd/
  CC       /tmp/build/perf/fd/array.o
  MKDIR    /tmp/build/perf/fs/
  CC       /tmp/build/perf/fs/fs.o
  CC       /tmp/build/perf/event-parse.o
  CC       /tmp/build/perf/core.o
  CC       /tmp/build/perf/help.o
  MKDIR    /tmp/build/perf/fs/
  GEN      /tmp/build/perf/bpf_helper_defs.h
  CC       /tmp/build/perf/fs/tracing_path.o
  LD       /tmp/build/perf/fd/libapi-in.o
  CC       /tmp/build/perf/cpumap.o
  CC       /tmp/build/perf/threadmap.o
  CC       /tmp/build/perf/fs/cgroup.o
  CC       /tmp/build/perf/evsel.o
  MKDIR    /tmp/build/perf/staticobjs/
  CC       /tmp/build/perf/staticobjs/libbpf.o
  CC       /tmp/build/perf/pager.o
  LD       /tmp/build/perf/fs/libapi-in.o
  CC       /tmp/build/perf/cpu.o
  CC       /tmp/build/perf/parse-options.o
  CC       /tmp/build/perf/evlist.o
  CC       /tmp/build/perf/mmap.o
  CC       /tmp/build/perf/debug.o
  CC       /tmp/build/perf/str_error_r.o
  MKDIR    /tmp/build/perf/staticobjs/
  CC       /tmp/build/perf/staticobjs/bpf.o
  CC       /tmp/build/perf/zalloc.o
  LD       /tmp/build/perf/libapi-in.o
  AR       /tmp/build/perf/libapi.a
  CC       /tmp/build/perf/event-plugin.o
  CC       /tmp/build/perf/trace-seq.o
  CC       /tmp/build/perf/parse-filter.o
  CC       /tmp/build/perf/parse-utils.o
  CC       /tmp/build/perf/xyarray.o
  CC       /tmp/build/perf/kbuffer-parse.o
  CC       /tmp/build/perf/lib.o
  CC       /tmp/build/perf/tep_strerror.o
  CC       /tmp/build/perf/event-parse-api.o
  CC       /tmp/build/perf/staticobjs/nlattr.o
  LD       /tmp/build/perf/libperf-in.o
  CC       /tmp/build/perf/run-command.o
  AR       /tmp/build/perf/libperf.a
  CC       /tmp/build/perf/sigchain.o
  LD       /tmp/build/perf/libtraceevent-in.o
  LINK     /tmp/build/perf/libtraceevent.a
  CC       /tmp/build/perf/subcmd-config.o
  CC       /tmp/build/perf/staticobjs/btf.o
  CC       /tmp/build/perf/staticobjs/libbpf_errno.o
  LD       /tmp/build/perf/libsubcmd-in.o
  GEN      perf-archive
  AR       /tmp/build/perf/libsubcmd.a
  CC       /tmp/build/perf/staticobjs/str_error.o
  GEN      perf-with-kcore
  MKDIR    /tmp/build/perf/pmu-events/
  MKDIR    /tmp/build/perf/pmu-events/
  HOSTCC   /tmp/build/perf/pmu-events/json.o
  HOSTCC   /tmp/build/perf/pmu-events/jsmn.o
  MKDIR    /tmp/build/perf/pmu-events/
  HOSTCC   /tmp/build/perf/pmu-events/jevents.o
  CC       /tmp/build/perf/staticobjs/netlink.o
  CC       /tmp/build/perf/staticobjs/bpf_prog_linfo.o
  CC       /tmp/build/perf/staticobjs/libbpf_probes.o
  MKDIR    /tmp/build/perf/ui/gtk/
  CC       /tmp/build/perf/plugin_jbd2.o
  CC       /tmp/build/perf/ui/gtk/browser.o
  LD       /tmp/build/perf/plugin_jbd2-in.o
  CC       /tmp/build/perf/plugin_hrtimer.o
  CC       /tmp/build/perf/plugin_kmem.o
  LD       /tmp/build/perf/plugin_kmem-in.o
  CC       /tmp/build/perf/staticobjs/xsk.o
  MKDIR    /tmp/build/perf/ui/gtk/
  CC       /tmp/build/perf/plugin_kvm.o
  CC       /tmp/build/perf/ui/gtk/hists.o
  CC       /tmp/build/perf/plugin_mac80211.o
  HOSTLD   /tmp/build/perf/pmu-events/jevents-in.o
  LINK     /tmp/build/perf/pmu-events/jevents
  LD       /tmp/build/perf/plugin_hrtimer-in.o
  CC       /tmp/build/perf/plugin_sched_switch.o
  GEN      /tmp/build/perf/pmu-events/pmu-events.c
  LD       /tmp/build/perf/plugin_mac80211-in.o
  CC       /tmp/build/perf/plugin_function.o
  LD       /tmp/build/perf/plugin_kvm-in.o
  CC       /tmp/build/perf/plugin_xen.o
  LD       /tmp/build/perf/plugin_sched_switch-in.o
  CC       /tmp/build/perf/staticobjs/hashmap.o
  CC       /tmp/build/perf/plugin_scsi.o
  LD       /tmp/build/perf/plugin_xen-in.o
  LD       /tmp/build/perf/plugin_function-in.o
  CC       /tmp/build/perf/ui/gtk/setup.o
  LD       /tmp/build/perf/plugin_scsi-in.o
  CC       /tmp/build/perf/pmu-events/pmu-events.o
  CC       /tmp/build/perf/ui/gtk/util.o
  CC       /tmp/build/perf/staticobjs/btf_dump.o
  CC       /tmp/build/perf/staticobjs/ringbuf.o
  CC       /tmp/build/perf/plugin_cfg80211.o
  CC       /tmp/build/perf/builtin-bench.o
  LD       /tmp/build/perf/plugin_cfg80211-in.o
  LINK     /tmp/build/perf/plugin_jbd2.so
  LINK     /tmp/build/perf/plugin_hrtimer.so
  CC       /tmp/build/perf/builtin-annotate.o
  LD       /tmp/build/perf/staticobjs/libbpf-in.o
  LINK     /tmp/build/perf/plugin_kmem.so
  LINK     /tmp/build/perf/libbpf.a
  LINK     /tmp/build/perf/plugin_kvm.so
  CC       /tmp/build/perf/builtin-config.o
  CC       /tmp/build/perf/builtin-diff.o
  LINK     /tmp/build/perf/plugin_mac80211.so
  CC       /tmp/build/perf/ui/gtk/helpline.o
  LINK     /tmp/build/perf/plugin_sched_switch.so
  LINK     /tmp/build/perf/plugin_function.so
  CC       /tmp/build/perf/ui/gtk/progress.o
  CC       /tmp/build/perf/ui/gtk/annotate.o
  LINK     /tmp/build/perf/plugin_xen.so
  LINK     /tmp/build/perf/plugin_scsi.so
  CC       /tmp/build/perf/builtin-evlist.o
  CC       /tmp/build/perf/builtin-ftrace.o
  LINK     /tmp/build/perf/plugin_cfg80211.so
  CC       /tmp/build/perf/builtin-help.o
  GEN      /tmp/build/perf/libtraceevent-dynamic-list
  CC       /tmp/build/perf/builtin-sched.o
  LD       /tmp/build/perf/pmu-events/pmu-events-in.o
  CC       /tmp/build/perf/builtin-buildid-list.o
  CC       /tmp/build/perf/ui/gtk/zalloc.o
  CC       /tmp/build/perf/builtin-buildid-cache.o
  CC       /tmp/build/perf/builtin-kallsyms.o
  CC       /tmp/build/perf/builtin-list.o
  CC       /tmp/build/perf/builtin-record.o
  CC       /tmp/build/perf/builtin-report.o
  CC       /tmp/build/perf/builtin-stat.o
  LD       /tmp/build/perf/ui/gtk/gtk-in.o
  LD       /tmp/build/perf/gtk-in.o
  LINK     /tmp/build/perf/libperf-gtk.so
  CC       /tmp/build/perf/builtin-timechart.o
  CC       /tmp/build/perf/builtin-top.o
  CC       /tmp/build/perf/builtin-script.o
  CC       /tmp/build/perf/builtin-kmem.o
  CC       /tmp/build/perf/builtin-lock.o
  CC       /tmp/build/perf/builtin-kvm.o
  CC       /tmp/build/perf/builtin-inject.o
  CC       /tmp/build/perf/builtin-mem.o
  CC       /tmp/build/perf/builtin-data.o
  CC       /tmp/build/perf/builtin-version.o
  CC       /tmp/build/perf/builtin-c2c.o
  CC       /tmp/build/perf/builtin-trace.o
  CC       /tmp/build/perf/builtin-probe.o
  MKDIR    /tmp/build/perf/bench/
  CC       /tmp/build/perf/bench/sched-messaging.o
  MKDIR    /tmp/build/perf/tests/
  CC       /tmp/build/perf/tests/builtin-test.o
  MKDIR    /tmp/build/perf/tests/
  CC       /tmp/build/perf/tests/parse-events.o
  MKDIR    /tmp/build/perf/bench/
  CC       /tmp/build/perf/bench/sched-pipe.o
  CC       /tmp/build/perf/bench/mem-functions.o
  CC       /tmp/build/perf/tests/dso-data.o
  CC       /tmp/build/perf/arch/common.o
  MKDIR    /tmp/build/perf/util/
  CC       /tmp/build/perf/util/annotate.o
  CC       /tmp/build/perf/tests/attr.o
  MKDIR    /tmp/build/perf/arch/x86/util/
  CC       /tmp/build/perf/arch/x86/util/header.o
  MKDIR    /tmp/build/perf/arch/x86/util/
  CC       /tmp/build/perf/arch/x86/util/tsc.o
  CC       /tmp/build/perf/arch/x86/util/pmu.o
  CC       /tmp/build/perf/tests/vmlinux-kallsyms.o
  CC       /tmp/build/perf/tests/openat-syscall.o
  CC       /tmp/build/perf/arch/x86/util/kvm-stat.o
  CC       /tmp/build/perf/arch/x86/util/perf_regs.o
  CC       /tmp/build/perf/tests/openat-syscall-all-cpus.o
  CC       /tmp/build/perf/arch/x86/util/group.o
  CC       /tmp/build/perf/arch/x86/util/machine.o
  CC       /tmp/build/perf/ui/setup.o
  CC       /tmp/build/perf/ui/helpline.o
  CC       /tmp/build/perf/ui/progress.o
  CC       /tmp/build/perf/tests/openat-syscall-tp-fields.o
  CC       /tmp/build/perf/tests/mmap-basic.o
  MKDIR    /tmp/build/perf/scripts/perl/Perf-Trace-Util/
  CC       /tmp/build/perf/scripts/perl/Perf-Trace-Util/Context.o
  CC       /tmp/build/perf/arch/x86/util/event.o
  CC       /tmp/build/perf/ui/util.o
  CC       /tmp/build/perf/ui/hist.o
  CC       /tmp/build/perf/arch/x86/util/dwarf-regs.o
  CC       /tmp/build/perf/arch/x86/util/unwind-libunwind.o
  CC       /tmp/build/perf/arch/x86/util/auxtrace.o
  LD       /tmp/build/perf/scripts/perl/Perf-Trace-Util/perf-in.o
  LD       /tmp/build/perf/scripts/perf-in.o
  MKDIR    /tmp/build/perf/ui/stdio/
  CC       /tmp/build/perf/ui/stdio/hist.o
  CC       /tmp/build/perf/arch/x86/util/archinsn.o
  CC       /tmp/build/perf/arch/x86/util/intel-pt.o
  CC       /tmp/build/perf/trace/beauty/clone.o
  CC       /tmp/build/perf/trace/beauty/fcntl.o
  CC       /tmp/build/perf/arch/x86/util/intel-bts.o
  CC       /tmp/build/perf/trace/beauty/flock.o
  CC       /tmp/build/perf/trace/beauty/fsmount.o
  CC       /tmp/build/perf/trace/beauty/fspick.o
  CC       /tmp/build/perf/trace/beauty/ioctl.o
  LD       /tmp/build/perf/arch/x86/util/perf-in.o
  MKDIR    /tmp/build/perf/arch/x86/tests/
  CC       /tmp/build/perf/arch/x86/tests/regs_load.o
  CC       /tmp/build/perf/tests/perf-record.o
  CC       /tmp/build/perf/bench/futex-hash.o
  CC       /tmp/build/perf/perf.o
  CC       /tmp/build/perf/tests/evsel-roundtrip-name.o
  CC       /tmp/build/perf/bench/futex-wake.o
  CC       /tmp/build/perf/tests/evsel-tp-sched.o
  MKDIR    /tmp/build/perf/arch/x86/tests/
  MKDIR    /tmp/build/perf/util/
  CC       /tmp/build/perf/trace/beauty/kcmp.o
  CC       /tmp/build/perf/ui/browser.o
  CC       /tmp/build/perf/util/block-info.o
  CC       /tmp/build/perf/util/block-range.o
  CC       /tmp/build/perf/util/build-id.o
  CC       /tmp/build/perf/trace/beauty/mount_flags.o
  CC       /tmp/build/perf/arch/x86/tests/arch-tests.o
  CC       /tmp/build/perf/arch/x86/tests/dwarf-unwind.o
  CC       /tmp/build/perf/bench/futex-wake-parallel.o
  CC       /tmp/build/perf/tests/fdarray.o
  CC       /tmp/build/perf/bench/futex-requeue.o
  CC       /tmp/build/perf/tests/pmu.o
  CC       /tmp/build/perf/bench/futex-lock-pi.o
  CC       /tmp/build/perf/util/cacheline.o
  CC       /tmp/build/perf/arch/x86/tests/rdpmc.o
  CC       /tmp/build/perf/util/config.o
  CC       /tmp/build/perf/util/copyfile.o
  CC       /tmp/build/perf/bench/epoll-wait.o
  CC       /tmp/build/perf/bench/epoll-ctl.o
  CC       /tmp/build/perf/bench/synthesize.o
  CC       /tmp/build/perf/bench/kallsyms-parse.o
  CC       /tmp/build/perf/bench/mem-memcpy-x86-64-lib.o
  CC       /tmp/build/perf/arch/x86/tests/perf-time-to-tsc.o
  CC       /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o
  CC       /tmp/build/perf/bench/mem-memset-x86-64-asm.o
  CC       /tmp/build/perf/tests/pmu-events.o
  CC       /tmp/build/perf/trace/beauty/move_mount.o
  MKDIR    /tmp/build/perf/ui/browsers/
  CC       /tmp/build/perf/tests/hists_common.o
  CC       /tmp/build/perf/ui/browsers/annotate.o
  CC       /tmp/build/perf/trace/beauty/pkey_alloc.o
  CC       /tmp/build/perf/trace/beauty/arch_prctl.o
  CC       /tmp/build/perf/trace/beauty/prctl.o
  CC       /tmp/build/perf/util/ctype.o
  CC       /tmp/build/perf/trace/beauty/renameat.o
  CC       /tmp/build/perf/bench/numa.o
  CC       /tmp/build/perf/trace/beauty/sockaddr.o
  CC       /tmp/build/perf/trace/beauty/socket.o
  MKDIR    /tmp/build/perf/ui/browsers/
  CC       /tmp/build/perf/ui/browsers/hists.o
  CC       /tmp/build/perf/arch/x86/tests/insn-x86.o
  CC       /tmp/build/perf/tests/hists_link.o
  CC       /tmp/build/perf/tests/hists_filter.o
  CC       /tmp/build/perf/util/db-export.o
  CC       /tmp/build/perf/tests/hists_output.o
  CC       /tmp/build/perf/trace/beauty/statx.o
  MKDIR    /tmp/build/perf/ui/tui/
  CC       /tmp/build/perf/ui/tui/setup.o
  CC       /tmp/build/perf/trace/beauty/sync_file_range.o
  MKDIR    /tmp/build/perf/trace/beauty/tracepoints/
  CC       /tmp/build/perf/trace/beauty/tracepoints/x86_irq_vectors.o
  MKDIR    /tmp/build/perf/ui/tui/
  CC       /tmp/build/perf/ui/tui/util.o
  MKDIR    /tmp/build/perf/trace/beauty/tracepoints/
  CC       /tmp/build/perf/trace/beauty/tracepoints/x86_msr.o
  LD       /tmp/build/perf/trace/beauty/tracepoints/perf-in.o
  LD       /tmp/build/perf/trace/beauty/perf-in.o
  CC       /tmp/build/perf/ui/browsers/map.o
  CC       /tmp/build/perf/arch/x86/tests/intel-pt-pkt-decoder-test.o
  CC       /tmp/build/perf/ui/browsers/scripts.o
  CC       /tmp/build/perf/arch/x86/tests/bp-modify.o
  CC       /tmp/build/perf/tests/hists_cumulate.o
  CC       /tmp/build/perf/util/env.o
  CC       /tmp/build/perf/tests/python-use.o
  LD       /tmp/build/perf/arch/x86/tests/perf-in.o
  LD       /tmp/build/perf/arch/x86/perf-in.o
  LD       /tmp/build/perf/arch/perf-in.o
  LD       /tmp/build/perf/bench/perf-in.o
  CC       /tmp/build/perf/tests/bp_signal.o
  CC       /tmp/build/perf/tests/bp_signal_overflow.o
  CC       /tmp/build/perf/util/event.o
  CC       /tmp/build/perf/ui/tui/helpline.o
  CC       /tmp/build/perf/ui/browsers/header.o
  CC       /tmp/build/perf/ui/browsers/res_sample.o
  CC       /tmp/build/perf/ui/tui/progress.o
  CC       /tmp/build/perf/util/evlist.o
  CC       /tmp/build/perf/tests/bp_account.o
  CC       /tmp/build/perf/util/sideband_evlist.o
  CC       /tmp/build/perf/tests/wp.o
  CC       /tmp/build/perf/util/evsel.o
  LD       /tmp/build/perf/ui/tui/perf-in.o
  CC       /tmp/build/perf/util/evsel_fprintf.o
  CC       /tmp/build/perf/util/perf_event_attr_fprintf.o
  CC       /tmp/build/perf/tests/task-exit.o
  CC       /tmp/build/perf/util/evswitch.o
  CC       /tmp/build/perf/tests/sw-clock.o
  CC       /tmp/build/perf/util/find_bit.o
  CC       /tmp/build/perf/util/get_current_dir_name.o
  CC       /tmp/build/perf/util/kallsyms.o
  CC       /tmp/build/perf/tests/mmap-thread-lookup.o
  CC       /tmp/build/perf/tests/thread-maps-share.o
  CC       /tmp/build/perf/tests/switch-tracking.o
  CC       /tmp/build/perf/util/levenshtein.o
  CC       /tmp/build/perf/tests/keep-tracking.o
  CC       /tmp/build/perf/util/llvm-utils.o
  CC       /tmp/build/perf/tests/code-reading.o
  CC       /tmp/build/perf/util/mmap.o
  CC       /tmp/build/perf/tests/sample-parsing.o
  CC       /tmp/build/perf/tests/parse-no-sample-id-all.o
  LD       /tmp/build/perf/ui/browsers/perf-in.o
  LD       /tmp/build/perf/ui/perf-in.o
  CC       /tmp/build/perf/util/memswap.o
  CC       /tmp/build/perf/tests/kmod-path.o
  BISON    /tmp/build/perf/util/parse-events-bison.c
  CC       /tmp/build/perf/util/perf_regs.o
  CC       /tmp/build/perf/util/path.o
  CC       /tmp/build/perf/util/print_binary.o
  CC       /tmp/build/perf/tests/thread-map.o
  CC       /tmp/build/perf/util/rlimit.o
  CC       /tmp/build/perf/tests/llvm.o
  CC       /tmp/build/perf/util/argv_split.o
  CC       /tmp/build/perf/tests/bpf.o
  CC       /tmp/build/perf/util/rbtree.o
  CC       /tmp/build/perf/tests/topology.o
  CC       /tmp/build/perf/util/libstring.o
  CC       /tmp/build/perf/util/bitmap.o
  CC       /tmp/build/perf/tests/mem.o
  CC       /tmp/build/perf/util/hweight.o
  CC       /tmp/build/perf/tests/cpumap.o
  CC       /tmp/build/perf/tests/stat.o
  CC       /tmp/build/perf/tests/event_update.o
  CC       /tmp/build/perf/tests/event-times.o
  CC       /tmp/build/perf/util/smt.o
  CC       /tmp/build/perf/tests/expr.o
  CC       /tmp/build/perf/util/strbuf.o
  CC       /tmp/build/perf/util/string.o
  CC       /tmp/build/perf/util/strlist.o
  CC       /tmp/build/perf/util/strfilter.o
  CC       /tmp/build/perf/tests/backward-ring-buffer.o
  CC       /tmp/build/perf/util/top.o
  CC       /tmp/build/perf/tests/sdt.o
  CC       /tmp/build/perf/util/usage.o
  CC       /tmp/build/perf/tests/is_printable_array.o
  CC       /tmp/build/perf/util/dso.o
  CC       /tmp/build/perf/util/dsos.o
  CC       /tmp/build/perf/util/symbol.o
  CC       /tmp/build/perf/tests/bitmap.o
  CC       /tmp/build/perf/tests/perf-hooks.o
  CC       /tmp/build/perf/tests/clang.o
  CC       /tmp/build/perf/util/symbol_fprintf.o
  CC       /tmp/build/perf/tests/unit_number__scnprintf.o
  CC       /tmp/build/perf/tests/mem2node.o
  CC       /tmp/build/perf/tests/maps.o
  CC       /tmp/build/perf/tests/time-utils-test.o
  CC       /tmp/build/perf/tests/genelf.o
  CC       /tmp/build/perf/util/color.o
  CC       /tmp/build/perf/tests/api-io.o
  CC       /tmp/build/perf/util/color_config.o
  CC       /tmp/build/perf/tests/demangle-java-test.o
  CC       /tmp/build/perf/tests/pfm.o
  CC       /tmp/build/perf/util/metricgroup.o
  CC       /tmp/build/perf/tests/parse-metric.o
  CC       /tmp/build/perf/tests/dwarf-unwind.o
  CC       /tmp/build/perf/util/header.o
  CC       /tmp/build/perf/util/callchain.o
  CC       /tmp/build/perf/util/values.o
  CC       /tmp/build/perf/tests/llvm-src-base.o
  CC       /tmp/build/perf/tests/llvm-src-kbuild.o
  CC       /tmp/build/perf/tests/llvm-src-prologue.o
  CC       /tmp/build/perf/tests/llvm-src-relocation.o
  CC       /tmp/build/perf/util/debug.o
  CC       /tmp/build/perf/util/fncache.o
  LD       /tmp/build/perf/tests/perf-in.o
  CC       /tmp/build/perf/util/machine.o
  CC       /tmp/build/perf/util/map.o
  CC       /tmp/build/perf/util/pstack.o
  CC       /tmp/build/perf/util/session.o
  CC       /tmp/build/perf/util/sample-raw.o
  CC       /tmp/build/perf/util/s390-sample-raw.o
  CC       /tmp/build/perf/util/syscalltbl.o
  CC       /tmp/build/perf/util/ordered-events.o
  CC       /tmp/build/perf/util/namespaces.o
  CC       /tmp/build/perf/util/comm.o
  CC       /tmp/build/perf/util/thread.o
  CC       /tmp/build/perf/util/thread_map.o
  CC       /tmp/build/perf/util/trace-event-parse.o
  FLEX     /tmp/build/perf/util/parse-events-flex.h
  BISON    /tmp/build/perf/util/pmu-bison.c
  CC       /tmp/build/perf/util/trace-event-read.o
  CC       /tmp/build/perf/util/trace-event-info.o
  CC       /tmp/build/perf/util/trace-event-scripting.o
  CC       /tmp/build/perf/util/trace-event.o
  CC       /tmp/build/perf/util/svghelper.o
  CC       /tmp/build/perf/util/sort.o
  CC       /tmp/build/perf/util/hist.o
  CC       /tmp/build/perf/util/util.o
  CC       /tmp/build/perf/util/cpumap.o
  CC       /tmp/build/perf/util/affinity.o
  CC       /tmp/build/perf/util/cputopo.o
  CC       /tmp/build/perf/util/cgroup.o
  CC       /tmp/build/perf/util/target.o
  CC       /tmp/build/perf/util/rblist.o
  CC       /tmp/build/perf/util/intlist.o
  CC       /tmp/build/perf/util/vdso.o
  CC       /tmp/build/perf/util/counts.o
  CC       /tmp/build/perf/util/stat.o
  CC       /tmp/build/perf/util/stat-shadow.o
  CC       /tmp/build/perf/util/stat-display.o
  CC       /tmp/build/perf/util/perf_api_probe.o
  CC       /tmp/build/perf/util/record.o
  CC       /tmp/build/perf/util/srcline.o
  CC       /tmp/build/perf/util/srccode.o
  CC       /tmp/build/perf/util/synthetic-events.o
  CC       /tmp/build/perf/util/data.o
  CC       /tmp/build/perf/util/tsc.o
  CC       /tmp/build/perf/util/cloexec.o
  CC       /tmp/build/perf/util/call-path.o
  CC       /tmp/build/perf/util/rwsem.o
  CC       /tmp/build/perf/util/thread-stack.o
  CC       /tmp/build/perf/util/spark.o
  CC       /tmp/build/perf/util/auxtrace.o
  MKDIR    /tmp/build/perf/util/arm-spe-decoder/
  CC       /tmp/build/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.o
  MKDIR    /tmp/build/perf/util/intel-pt-decoder/
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.o
  MKDIR    /tmp/build/perf/util/intel-pt-decoder/
  GEN      /tmp/build/perf/util/intel-pt-decoder/inat-tables.c
  MKDIR    /tmp/build/perf/util/scripting-engines/
  CC       /tmp/build/perf/util/scripting-engines/trace-event-perl.o
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-log.o
  MKDIR    /tmp/build/perf/util/arm-spe-decoder/
  CC       /tmp/build/perf/util/arm-spe-decoder/arm-spe-decoder.o
  CC       /tmp/build/perf/util/intel-pt.o
  CC       /tmp/build/perf/util/intel-bts.o
  LD       /tmp/build/perf/util/arm-spe-decoder/perf-in.o
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-decoder.o
  CC       /tmp/build/perf/util/intel-pt-decoder/intel-pt-insn-decoder.o
  CC       /tmp/build/perf/util/arm-spe.o
  CC       /tmp/build/perf/util/s390-cpumsf.o
  CC       /tmp/build/perf/util/parse-branch-options.o
  CC       /tmp/build/perf/util/dump-insn.o
  LD       /tmp/build/perf/util/scripting-engines/perf-in.o
  CC       /tmp/build/perf/util/parse-regs-options.o
  CC       /tmp/build/perf/util/term.o
  CC       /tmp/build/perf/util/help-unknown-cmd.o
  CC       /tmp/build/perf/util/mem-events.o
  CC       /tmp/build/perf/util/vsprintf.o
  CC       /tmp/build/perf/util/units.o
  CC       /tmp/build/perf/util/time-utils.o
  BISON    /tmp/build/perf/util/expr-bison.c
  CC       /tmp/build/perf/util/branch.o
  CC       /tmp/build/perf/util/mem2node.o
  CC       /tmp/build/perf/util/bpf-loader.o
  CC       /tmp/build/perf/util/bpf_map.o
  CC       /tmp/build/perf/util/bpf-prologue.o
  LD       /tmp/build/perf/util/intel-pt-decoder/perf-in.o
  CC       /tmp/build/perf/util/symbol-elf.o
  CC       /tmp/build/perf/util/probe-file.o
  CC       /tmp/build/perf/util/probe-event.o
  CC       /tmp/build/perf/util/probe-finder.o
  CC       /tmp/build/perf/util/dwarf-aux.o
  CC       /tmp/build/perf/util/dwarf-regs.o
  CC       /tmp/build/perf/util/unwind-libunwind-local.o
  CC       /tmp/build/perf/util/unwind-libunwind.o
  CC       /tmp/build/perf/util/zlib.o
  CC       /tmp/build/perf/util/lzma.o
  CC       /tmp/build/perf/util/zstd.o
  CC       /tmp/build/perf/util/cap.o
  CC       /tmp/build/perf/util/demangle-java.o
  CC       /tmp/build/perf/util/demangle-rust.o
  CC       /tmp/build/perf/util/jitdump.o
  CC       /tmp/build/perf/util/genelf.o
  CC       /tmp/build/perf/util/genelf_debug.o
  CC       /tmp/build/perf/util/perf-hooks.o
  CC       /tmp/build/perf/util/bpf-event.o
  FLEX     /tmp/build/perf/util/parse-events-flex.c
  CC       /tmp/build/perf/util/parse-events-bison.o
  FLEX     /tmp/build/perf/util/pmu-flex.c
  CC       /tmp/build/perf/util/pmu-bison.o
  FLEX     /tmp/build/perf/util/expr-flex.c
  FLEX     /tmp/build/perf/util/expr-flex.h
  CC       /tmp/build/perf/util/parse-events.o
  CC       /tmp/build/perf/util/parse-events-flex.o
  CC       /tmp/build/perf/util/pmu.o
  CC       /tmp/build/perf/util/pmu-flex.o
  CC       /tmp/build/perf/util/expr-flex.o
  CC       /tmp/build/perf/util/expr-bison.o
  CC       /tmp/build/perf/util/expr.o
  LD       /tmp/build/perf/util/perf-in.o
  LD       /tmp/build/perf/perf-in.o
  LINK     /tmp/build/perf/perf
make: Leaving directory '/git/linux/tools/perf'


  13   114.11 alt:sisyphus                  : FAIL x86_64-alt-linux-gcc (GCC) 9.2.1 20200123 (ALT Sisyphus 9.2.1-alt3), clang version 10.0.0 
  14    27.26 amazonlinux:1                 : FAIL gcc (GCC) 7.2.1 20170915 (Red Hat 7.2.1-2), clang version 3.6.2 (tags/RELEASE_362/final)
  15    28.76 amazonlinux:2                 : FAIL gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6), clang version 7.0.1 (Amazon Linux 2 7.0.1-1.amzn2.0.2)

  FLEX     /tmp/build/perf/util/parse-events-flex.c
  CC       /tmp/build/perf/util/parse-events-bison.o
  FLEX     /tmp/build/perf/util/pmu-flex.c
  CC       /tmp/build/perf/util/pmu-bison.o
  FLEX     /tmp/build/perf/util/expr-flex.c
  FLEX     /tmp/build/perf/util/expr-flex.h
  CC       /tmp/build/perf/util/parse-events.o
  CC       /tmp/build/perf/util/parse-events-flex.o
  CC       /tmp/build/perf/util/pmu.o
/tmp/build/perf/util/parse-events-flex.c: In function 'parse_events_lex':
/tmp/build/perf/util/parse-events-flex.c:4911:23: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
    for ( yyl = 0; yyl < yyleng; ++yyl )
                       ^
/tmp/build/perf/util/parse-events-flex.c:193:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:204:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^~~~~~~~~~~~~~
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^~~~~~
util/parse-events.l:243:4: note: in expansion of macro 'REWIND'
    REWIND(0);
    ^~~~~~
/tmp/build/perf/util/parse-events-flex.c:193:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:204:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^~~~~~~~~~~~~~
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^~~~~~
util/parse-events.l:251:4: note: in expansion of macro 'REWIND'
    REWIND(1);
    ^~~~~~
/tmp/build/perf/util/parse-events-flex.c:193:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:204:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^~~~~~~~~~~~~~
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^~~~~~
util/parse-events.l:257:4: note: in expansion of macro 'REWIND'
    REWIND(0);
    ^~~~~~
/tmp/build/perf/util/parse-events-flex.c: In function 'parse_events__scan_bytes':
/tmp/build/perf/util/parse-events-flex.c:6204:17: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
  for ( i = 0; i < _yybytes_len; ++i )
                 ^
/tmp/build/perf/util/parse-events-flex.c: In function 'yy_fatal_error':
/tmp/build/perf/util/parse-events-flex.c:6265:58: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 static void yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
                                                          ^~~~~~~~~
/tmp/build/perf/util/parse-events-flex.c: In function 'parse_events_alloc':
/tmp/build/perf/util/parse-events-flex.c:6617:54: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void *parse_events_alloc (yy_size_t  size , yyscan_t yyscanner)
                                                      ^~~~~~~~~
/tmp/build/perf/util/parse-events-flex.c: In function 'parse_events_realloc':
/tmp/build/perf/util/parse-events-flex.c:6622:69: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void *parse_events_realloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
                                                                     ^~~~~~~~~
/tmp/build/perf/util/parse-events-flex.c: In function 'parse_events_free':
/tmp/build/perf/util/parse-events-flex.c:6634:47: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void parse_events_free (void * ptr , yyscan_t yyscanner)
                                               ^~~~~~~~~
  CC       /tmp/build/perf/util/pmu-flex.o
  CC       /tmp/build/perf/util/expr-flex.o
/tmp/build/perf/util/pmu-flex.c: In function 'perf_pmu__scan_bytes':
/tmp/build/perf/util/pmu-flex.c:1589:17: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
  for ( i = 0; i < _yybytes_len; ++i )
                 ^
  CC       /tmp/build/perf/util/expr-bison.o
/tmp/build/perf/util/expr-flex.c: In function 'expr__scan_bytes':
/tmp/build/perf/util/expr-flex.c:1789:17: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
  for ( i = 0; i < _yybytes_len; ++i )
                 ^
/tmp/build/perf/util/expr-flex.c: In function 'yy_fatal_error':
/tmp/build/perf/util/expr-flex.c:1810:58: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 static void yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
                                                          ^~~~~~~~~
/tmp/build/perf/util/expr-flex.c: In function 'expr_alloc':
/tmp/build/perf/util/expr-flex.c:2142:46: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void *expr_alloc (yy_size_t  size , yyscan_t yyscanner)
                                              ^~~~~~~~~
/tmp/build/perf/util/expr-flex.c: In function 'expr_realloc':
/tmp/build/perf/util/expr-flex.c:2147:61: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void *expr_realloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
                                                             ^~~~~~~~~
/tmp/build/perf/util/expr-flex.c: In function 'expr_free':
/tmp/build/perf/util/expr-flex.c:2159:39: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void expr_free (void * ptr , yyscan_t yyscanner)
                                       ^~~~~~~~~
  CC       /tmp/build/perf/util/expr.o
cc1: all warnings being treated as errors


  16    19.41 android-ndk:r12b-arm          : FAIL arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
  17    19.34 android-ndk:r15c-arm          : FAIL arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
  18    14.87 centos:5                      : FAIL gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-55)
  19    21.77 centos:6                      : FAIL gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23)
  20    27.32 centos:7                      : FAIL gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39)
  21    30.78 centos:8                      : FAIL gcc (GCC) 8.3.1 20190507 (Red Hat 8.3.1-4), clang version 8.0.1 (Red Hat 8.0.1-1.module_el8.1.0+215+a01033fb)

For centos:8:

  FLEX     /tmp/build/perf/util/parse-events-flex.c
  CC       /tmp/build/perf/util/parse-events-bison.o
  FLEX     /tmp/build/perf/util/pmu-flex.c
  CC       /tmp/build/perf/util/pmu-bison.o
  FLEX     /tmp/build/perf/util/expr-flex.c
  FLEX     /tmp/build/perf/util/expr-flex.h
  CC       /tmp/build/perf/util/parse-events.o
  CC       /tmp/build/perf/util/parse-events-flex.o
  CC       /tmp/build/perf/util/pmu.o
/tmp/build/perf/util/parse-events-flex.c: In function 'parse_events_lex':
/tmp/build/perf/util/parse-events-flex.c:4924:23: error: comparison of integer expressions of different signedness: 'yy_size_t' {aka 'long unsigned int'} and 'int' [-Werror=sign-compare]
    for ( yyl = 0; yyl < yyleng; ++yyl )
                       ^
/tmp/build/perf/util/parse-events-flex.c:189:36: error: comparison of integer expressions of different signedness: 'yy_size_t' {aka 'long unsigned int'} and 'int' [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:207:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^~~~~~~~~~~~~~
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^~~~~~
util/parse-events.l:243:4: note: in expansion of macro 'REWIND'
    REWIND(0);
    ^~~~~~
/tmp/build/perf/util/parse-events-flex.c:189:36: error: comparison of integer expressions of different signedness: 'yy_size_t' {aka 'long unsigned int'} and 'int' [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:207:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^~~~~~~~~~~~~~
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^~~~~~
util/parse-events.l:251:4: note: in expansion of macro 'REWIND'
    REWIND(1);
    ^~~~~~
/tmp/build/perf/util/parse-events-flex.c:189:36: error: comparison of integer expressions of different signedness: 'yy_size_t' {aka 'long unsigned int'} and 'int' [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:207:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^~~~~~~~~~~~~~
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^~~~~~
util/parse-events.l:257:4: note: in expansion of macro 'REWIND'
    REWIND(0);
    ^~~~~~
  CC       /tmp/build/perf/util/pmu-flex.o
  CC       /tmp/build/perf/util/expr-flex.o
  CC       /tmp/build/perf/util/expr-bison.o
  CC       /tmp/build/perf/util/expr.o
cc1: all warnings being treated as errors

  22    68.72 clearlinux:latest             : Ok   gcc (Clear Linux OS for Intel Architecture) 9.3.1 20200501 releases/gcc-9.3.0-196-gcb2c76c8b1, clang version 10.0.0 
  23    29.61 debian:8                      : FAIL gcc (Debian 4.9.2-10+deb8u2) 4.9.2, Debian clang version 3.5.0-10 (tags/RELEASE_350/final) (based on LLVM 3.5.0)

    FLEX     /tmp/build/perf/util/parse-events-flex.c
  CC       /tmp/build/perf/util/parse-events-bison.o
  FLEX     /tmp/build/perf/util/pmu-flex.c
  CC       /tmp/build/perf/util/pmu-bison.o
  FLEX     /tmp/build/perf/util/expr-flex.c
  FLEX     /tmp/build/perf/util/expr-flex.h
  CC       /tmp/build/perf/util/expr.o
  CC       /tmp/build/perf/util/parse-events.o
  CC       /tmp/build/perf/util/parse-events-flex.o
  CC       /tmp/build/perf/util/pmu.o
  CC       /tmp/build/perf/util/pmu-flex.o
  CC       /tmp/build/perf/util/expr-flex.o
  CC       /tmp/build/perf/util/expr-bison.o
util/parse-events.l: In function 'parse_events_lex':
/tmp/build/perf/util/parse-events-flex.c:201:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:219:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^
util/parse-events.l:243:4: note: in expansion of macro 'REWIND'
    REWIND(0);
    ^
/tmp/build/perf/util/parse-events-flex.c:201:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:219:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^
util/parse-events.l:251:4: note: in expansion of macro 'REWIND'
    REWIND(1);
    ^
/tmp/build/perf/util/parse-events-flex.c:201:36: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
                 for ( yyl = n; yyl < yyleng; ++yyl )\
                                    ^
/tmp/build/perf/util/parse-events-flex.c:219:9: note: in expansion of macro 'YY_LESS_LINENO'
         YY_LESS_LINENO(yyless_macro_arg);\
         ^
util/parse-events.l:129:2: note: in expansion of macro 'yyless'
  yyless(0);      \
  ^
util/parse-events.l:257:4: note: in expansion of macro 'REWIND'
    REWIND(0);
    ^
/tmp/build/perf/util/parse-events-flex.c: In function 'yy_fatal_error':
/tmp/build/perf/util/parse-events-flex.c:6287:58: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 static void yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
                                                          ^
/tmp/build/perf/util/parse-events-flex.c: In function 'parse_events_alloc':
/tmp/build/perf/util/parse-events-flex.c:6639:54: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void *parse_events_alloc (yy_size_t  size , yyscan_t yyscanner)
                                                      ^
/tmp/build/perf/util/parse-events-flex.c: In function 'parse_events_realloc':
/tmp/build/perf/util/parse-events-flex.c:6644:69: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void *parse_events_realloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
                                                                     ^
/tmp/build/perf/util/parse-events-flex.c: In function 'parse_events_free':
/tmp/build/perf/util/parse-events-flex.c:6656:47: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void parse_events_free (void * ptr , yyscan_t yyscanner)
                                               ^
/tmp/build/perf/util/expr-flex.c: In function 'yy_fatal_error':
/tmp/build/perf/util/expr-flex.c:1826:58: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 static void yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
                                                          ^
/tmp/build/perf/util/expr-flex.c: In function 'expr_alloc':
/tmp/build/perf/util/expr-flex.c:2158:46: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void *expr_alloc (yy_size_t  size , yyscan_t yyscanner)
                                              ^
/tmp/build/perf/util/expr-flex.c: In function 'expr_realloc':
/tmp/build/perf/util/expr-flex.c:2163:61: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void *expr_realloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
                                                             ^
/tmp/build/perf/util/expr-flex.c: In function 'expr_free':
/tmp/build/perf/util/expr-flex.c:2175:39: error: unused parameter 'yyscanner' [-Werror=unused-parameter]
 void expr_free (void * ptr , yyscan_t yyscanner)
                                       ^
cc1: all warnings being treated as errors
mv: cannot stat '/tmp/build/perf/util/.expr-flex.o.tmp': No such file or directory
/git/linux/tools/build/Makefile.build:96: recipe for target '/tmp/build/perf/util/expr-flex.o' failed
make[4]: *** [/tmp/build/perf/util/expr-flex.o] Error 1
make[4]: *** Waiting for unfinished jobs....
cc1: all warnings being treated as errors
mv: cannot stat '/tmp/build/perf/util/.parse-events-flex.o.tmp': No such file or directory
/git/linux/tools/build/Makefile.build:96: recipe for target '/tmp/build/perf/util/parse-events-flex.o' failed
make[4]: *** [/tmp/build/perf/util/parse-events-flex.o] Error 1
/git/linux/tools/build/Makefile.build:139: recipe for target 'util' failed
make[3]: *** [util] Error 2
Makefile.perf:625: recipe for target '/tmp/build/perf/perf-in.o' failed
make[2]: *** [/tmp/build/perf/perf-in.o] Error 2
Makefile.perf:230: recipe for target 'sub-make' failed
make[1]: *** [sub-make] Error 2
Makefile:69: recipe for target 'all' failed
make: *** [all] Error 2
make: Leaving directory '/git/linux/tools/perf'
+ exit 1
[root@quaco ~]#

I'll leave it building and will try to figure out what is the problem


^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [PATCH 00/10] perf parse-events: enable more flex/bison warnings
  2020-06-11 13:38     ` Arnaldo Carvalho de Melo
@ 2020-06-11 13:40       ` Arnaldo Carvalho de Melo
  2020-06-11 13:41         ` Arnaldo Carvalho de Melo
  0 siblings, 1 reply; 16+ messages in thread
From: Arnaldo Carvalho de Melo @ 2020-06-11 13:40 UTC (permalink / raw)
  To: Ian Rogers, Jiri Olsa
  Cc: Peter Zijlstra, Ingo Molnar, Mark Rutland, Alexander Shishkin,
	Namhyung Kim, Andi Kleen, Jin Yao, John Garry, Adrian Hunter,
	linux-kernel, Stephane Eranian

Em Thu, Jun 11, 2020 at 10:38:54AM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Thu, Jun 11, 2020 at 10:07:58AM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Thu, Jun 11, 2020 at 11:02:49AM +0200, Jiri Olsa escreveu:
> > > On Wed, Jun 10, 2020 at 02:50:50PM -0700, Ian Rogers wrote:
> > > > All C compiler warnings are disabled are disabled by -w. This change
> > > > removes the -w from flex and bison targets. To avoid implicit
> > > > declarations header files are declared as targets and included.
> > > > 
> > > > Tested with GCC 9.3.0 and clang 9.0.1.
> > > > 
> > > > Previously posted as a single change:
> > > > https://lore.kernel.org/lkml/20200609234344.3795-2-irogers@google.com/
> > > > 
> > > > Ian Rogers (10):
> > > >   perf parse-events: Use automatic variable for flex input
> > > >   perf parse-events: Use automatic variable for yacc input
> > > >   perf pmu: Add bison debug build flag
> > > >   perf pmu: Add flex debug build flag
> > > >   perf parse-events: Declare flex header file output
> > > >   perf parse-events: Declare bison header file output
> > > >   perf parse-events: Disable a subset of flex warnings
> > > >   perf expr: Avoid implicit lex function declaration
> > > >   perf parse-events: Avoid implicit lex function declaration
> > > >   perf parse-events: Disable a subset of bison warnings
> > > 
> > > looks great, I wonder what the -w replacement will do in
> > > Arnaldo's distro test, but it'd be nice to get rid it
> > > 
> > > Acked-by: Jiri Olsa <jolsa@redhat.com>
> > 
> > Thanks, applied locally and will submit it to the test build suite.
> 
> Failed so far for, I'll leave it running, its a holiday here today, so
> I'll be on this occasionally, please look until the end of the (long)
> message, there are errors for more distros, some are, as expected the
> same, but should give a good idea of some extra fixes needed.
> 


  24  debian:9                      : FAIL gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516, clang version 3.8.1-24 (tags/RELEASE_381/final)

  FLEX     /tmp/build/perf/util/pmu-flex.c
  CC       /tmp/build/perf/util/pmu-bison.o
  FLEX     /tmp/build/perf/util/expr-flex.c
  FLEX     /tmp/build/perf/util/expr-flex.h
  CC       /tmp/build/perf/util/parse-events.o
  CC       /tmp/build/perf/util/parse-events-flex.o
  CC       /tmp/build/perf/util/pmu.o
  CC       /tmp/build/perf/util/pmu-flex.o
/tmp/build/perf/util/parse-events-flex.c: In function 'yy_get_next_buffer':
/tmp/build/perf/util/parse-events-flex.c:4717:18: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
   for ( n = 0; n < max_size && \
                  ^
/tmp/build/perf/util/parse-events-flex.c:5656:3: note: in expansion of macro 'YY_INPUT'
   YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
   ^~~~~~~~
/tmp/build/perf/util/pmu-flex.c: In function 'yy_get_next_buffer':
/tmp/build/perf/util/pmu-flex.c:608:18: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
   for ( n = 0; n < max_size && \
                  ^
/tmp/build/perf/util/pmu-flex.c:1058:3: note: in expansion of macro 'YY_INPUT'
   YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
   ^~~~~~~~
  CC       /tmp/build/perf/util/expr-flex.o
/tmp/build/perf/util/expr-flex.c: In function 'yy_get_next_buffer':
/tmp/build/perf/util/expr-flex.c:711:18: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
   for ( n = 0; n < max_size && \
                  ^
/tmp/build/perf/util/expr-flex.c:1241:3: note: in expansion of macro 'YY_INPUT'
   YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
   ^~~~~~~~
  CC       /tmp/build/perf/util/expr-bison.o
  CC       /tmp/build/perf/util/expr.o
cc1: all warnings being treated as errors
mv: cannot stat '/tmp/build/perf/util/.pmu-flex.o.tmp': No such file or directory
/git/linux/tools/build/Makefile.build:96: recipe for target '/tmp/build/perf/util/pmu-flex.o' failed
make[4]: *** [/tmp/build/perf/util/pmu-flex.o] Error 1
make[4]: *** Waiting for unfinished jobs...


debian:10 is going well so far, some of the builds passed


^ permalink raw reply	[flat|nested] 16+ messages in thread

* Re: [PATCH 00/10] perf parse-events: enable more flex/bison warnings
  2020-06-11 13:40       ` Arnaldo Carvalho de Melo
@ 2020-06-11 13:41         ` Arnaldo Carvalho de Melo
  0 siblings, 0 replies; 16+ messages in thread
From: Arnaldo Carvalho de Melo @ 2020-06-11 13:41 UTC (permalink / raw)
  To: Ian Rogers, Jiri Olsa
  Cc: Peter Zijlstra, Ingo Molnar, Mark Rutland, Alexander Shishkin,
	Namhyung Kim, Andi Kleen, Jin Yao, John Garry, Adrian Hunter,
	linux-kernel, Stephane Eranian

Em Thu, Jun 11, 2020 at 10:40:38AM -0300, Arnaldo Carvalho de Melo escreveu:
> 
> 
> debian:10 is going well so far, some of the builds passed

  25 debian:10                     : Ok   gcc (Debian 8.3.0-6) 8.3.0, clang version 7.0.1-8 (tags/RELEASE_701/final)


^ permalink raw reply	[flat|nested] 16+ messages in thread

end of thread, other threads:[~2020-06-11 13:41 UTC | newest]

Thread overview: 16+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2020-06-10 21:50 [PATCH 00/10] perf parse-events: enable more flex/bison warnings Ian Rogers
2020-06-10 21:50 ` [PATCH 01/10] perf parse-events: Use automatic variable for flex input Ian Rogers
2020-06-10 21:50 ` [PATCH 02/10] perf parse-events: Use automatic variable for yacc input Ian Rogers
2020-06-10 21:50 ` [PATCH 03/10] perf pmu: Add bison debug build flag Ian Rogers
2020-06-10 21:50 ` [PATCH 04/10] perf pmu: Add flex " Ian Rogers
2020-06-10 21:50 ` [PATCH 05/10] perf parse-events: Declare flex header file output Ian Rogers
2020-06-10 21:50 ` [PATCH 06/10] perf parse-events: Declare bison " Ian Rogers
2020-06-10 21:50 ` [PATCH 07/10] perf parse-events: Disable a subset of flex warnings Ian Rogers
2020-06-10 21:50 ` [PATCH 08/10] perf expr: Avoid implicit lex function declaration Ian Rogers
2020-06-10 21:50 ` [PATCH 09/10] perf parse-events: " Ian Rogers
2020-06-10 21:51 ` [PATCH 10/10] perf parse-events: Disable a subset of bison warnings Ian Rogers
2020-06-11  9:02 ` [PATCH 00/10] perf parse-events: enable more flex/bison warnings Jiri Olsa
2020-06-11 13:07   ` Arnaldo Carvalho de Melo
2020-06-11 13:38     ` Arnaldo Carvalho de Melo
2020-06-11 13:40       ` Arnaldo Carvalho de Melo
2020-06-11 13:41         ` Arnaldo Carvalho de Melo

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