Parallel builds of perf were failing for me on a 32p box, with:
* new build flags or prefix
util/pmu.l:7:23: error: pmu-bison.h: No such file or directory
...
make: *** [util/pmu-flex.o] Error 1
make: *** Waiting for unfinished jobs....
This can pretty quickly be seen by adding a sleep in front of
the bison calls in tools/perf/Makefile and running make -j4 on a
smaller box i.e.:
sleep 10; $(QUIET_BISON)$(BISON) -v util/pmu.y -d -o
$(OUTPUT)util/pmu-bison.c
Adding the following dependencies fixes it for me.
Signed-off-by: Eric Sandeen <sand...@redhat.com>
---
V2: Fix other bison dependency caught by Namhyung Kim <namhy...@kernel.org>,
thanks.
V3: Add $(OUTPUT) to generated deps, thanks again.
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 35655c3..01325cd 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -221,13 +221,13 @@ export PERL_PATH
FLEX = flex
BISON= bison
-$(OUTPUT)util/parse-events-flex.c: util/parse-events.l
+$(OUTPUT)util/parse-events-flex.c: util/parse-events.l
$(OUTPUT)util/parse-events-bison.c
$(QUIET_FLEX)$(FLEX) --header-file=$(OUTPUT)util/parse-events-flex.h
$(PARSER_DEBUG_FLEX) -t util/parse-events.l > $(OUTPUT)util/parse-events-flex.c
$(OUTPUT)util/parse-events-bison.c: util/parse-events.y
$(QUIET_BISON)$(BISON) -v util/parse-events.y -d $(PARSER_DEBUG_BISON)
-o $(OUTPUT)util/parse-events-bison.c
-$(OUTPUT)util/pmu-flex.c: util/pmu.l
+$(OUTPUT)util/pmu-flex.c: util/pmu.l $(OUTPUT)util/pmu-bison.c
$(QUIET_FLEX)$(FLEX) --header-file=$(OUTPUT)util/pmu-flex.h -t
util/pmu.l > $(OUTPUT)util/pmu-flex.c
$(OUTPUT)util/pmu-bison.c: util/pmu.y
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