perf tools: Convert to GTK2_SUPPORT
For building perf without gtk+2, we can set NO_GTK2=1 as a argument of
make. It then defines NO_GTK2_SUPPORT macro for C code to do the
proper handling. However it usually used in a negative semantics -
e.g. #ifndef - so we saw double negations which can be misleading.
Convert it to a positive form to make it more readable.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1348824728-14025-8-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/ui/helpline.h b/tools/perf/ui/helpline.h
index e1f126b..baa28a4 100644
--- a/tools/perf/ui/helpline.h
+++ b/tools/perf/ui/helpline.h
@@ -34,14 +34,14 @@
}
#endif /* NEWT_SUPPORT */
-#ifdef NO_GTK2_SUPPORT
+#ifdef GTK2_SUPPORT
+int perf_gtk__show_helpline(const char *format, va_list ap);
+#else
static inline int perf_gtk__show_helpline(const char *format __maybe_unused,
va_list ap __maybe_unused)
{
return 0;
}
-#else
-int perf_gtk__show_helpline(const char *format, va_list ap);
-#endif /* NO_GTK2_SUPPORT */
+#endif /* GTK2_SUPPORT */
#endif /* _PERF_UI_HELPLINE_H_ */