On Wed, Apr 29, 2015 at 01:27:40PM -0300, Arnaldo Carvalho de Melo wrote:
> > 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 <[email protected]>
> 
> 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?

looks like the RHEL6 gcc/cpp treats this as an error which
is not maskable by '-w' option

anyway I checked the git log history and I'm not sure
why we event have this define, it was added by Ingo
and carried by ever since:

  65f3e56e0c81 perf tools: Remove auto-generated bison/flex files

probably because of the fail I see if I remove it from pmu-bison.o build:

  util/pmu-bison.c:613:6: error: "YYLTYPE_IS_TRIVIAL" is not defined


jirka
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