[PATCH] perf tools: Fix Makefile to clean auto-generated bison/flex files properly

[Joonsoo Kim]

The commit 65f3e56e0c81 ("perf tools: Remove auto-generated bison/flex
files") removed those files from git and modified Makefile to clean
auto-generated bison/flex files. But, in Makefile, regular expression
"*-{bison,flex}*" doesn't work. Fix it.

Signed-off-by: Joonsoo Kim <js1304@xxxxxxxxx>

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 9bf3fc7..295c477 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -987,7 +987,7 @@ clean:
 	$(RM) *.spec *.pyc *.pyo */*.pyc */*.pyo $(OUTPUT)common-cmds.h TAGS tags cscope*
 	$(MAKE) -C Documentation/ clean
 	$(RM) $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)PERF-CFLAGS
-	$(RM) $(OUTPUT)util/*-{bison,flex}*
+	$(RM) $(OUTPUT)util/*-bison* $(OUTPUT)util/*-flex*
 	$(python-clean)
 
 .PHONY: all install clean strip
-- 
1.7.0.4

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