Current perf tool does not compile anymore on RHEL6

[Andi Kleen <andi@firstfloor.org>]

Presumably flex-2.5.35-8.el6.x86_64 doesn't support YY_EXTRA

Problem started with

commit 90e2b22dee908c13df256140a0d6527e3e8ea3f4
Author: Jiri Olsa <jolsa@redhat.com>
Date:   Fri Jun 15 14:31:40 2012 +0800

    perf/tool: Add support to reuse event grammar to parse out terms


Unfortunately needs several other patches reverted too to revert.


    CC /home/ak/lsrc/obj-perf/util/symbol.o
util/parse-events.c: In function ‘parse_events__scanner’:
util/parse-events.c:695: warning: implicit declaration of function
‘parse_events_lex_init_extra’
util/parse-events.c:695: warning: nested extern declaration of
‘parse_events_lex_init_extra’
util/parse-events.c:699: error: too many arguments to function
‘parse_events__scan_string’
util/parse-events.c:706: error: too many arguments to function
‘parse_events__flush_buffer’
util/parse-events.c:707: error: too many arguments to function
‘parse_events__delete_buffer’
util/parse-events.c:708: error: too many arguments to function
‘parse_events_lex_destroy’
util/parse-events.c: In function ‘parse_events_terms’:
util/parse-events.c:722: error: ‘PE_START_TERMS’ undeclared (first use
in this function)
util/parse-events.c:722: error: (Each undeclared identifier is reported
only once
util/parse-events.c:722: error: for each function it appears in.)
util/parse-events.c: In function ‘parse_events’:
util/parse-events.c:741: error: ‘PE_START_EVENTS’ undeclared (first use
in this function)


-- 
ak@linux.intel.com -- Speaking for myself only