linux-kernel - Re: [PATCH] perf tools: Fix bison-related build failure on CentOS 6

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Date:	Wed, 29 Apr 2015 13:27:40 -0300
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Jiri Olsa <jolsa@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf tools: Fix bison-related build failure on CentOS 6

> The YYLTYPE_IS_TRIVIAL is defined in the Build file, but unlike
> pmu-bison.c, gcc complained about it for parse-events-bison.c:
> 
>     CC       util/parse-events-bison.o
>   In file included from util/parse-events.y:16:
>   util/parse-events-bison.h:101:1: error: "YYLTYPE_IS_TRIVIAL" redefined
>   <command-line>: error: this is the location of the previous definition
>   make[3]: *** [util/parse-events-bison.o] Error 1
> 
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

Ok, so this helps, it builds now on RHEL6.6, which was something I and
Jiri were chasing, but why has it complained for one and not the other?
Ideas?

- Arnaldo

> ---
>  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 b6c3f39f081a..28af8e2825b3 100644
> --- a/tools/perf/util/Build
> +++ b/tools/perf/util/Build
> @@ -118,7 +118,7 @@ $(OUTPUT)util/pmu-bison.c: util/pmu.y
> 
>  CFLAGS_parse-events-flex.o  += -w
>  CFLAGS_pmu-flex.o           += -w
> -CFLAGS_parse-events-bison.o += -DYYENABLE_NLS=0 -DYYLTYPE_IS_TRIVIAL=0 -w
> +CFLAGS_parse-events-bison.o += -DYYENABLE_NLS=0 -w
>  CFLAGS_pmu-bison.o          += -DYYENABLE_NLS=0 -DYYLTYPE_IS_TRIVIAL=0 -w
> 
>  $(OUTPUT)util/parse-events.o: $(OUTPUT)util/parse-events-flex.c
> $(OUTPUT)util/parse-events-bison.c
> --
> 2.3.5
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