perf tui: Only support --tui with slang

Make the --tui command line flags dependent HAVE_SLANG_SUPPORT. This was
reported as confusing in:
https://lore.kernel.org/linux-perf-users/[e-mail]/

Reported-by: xaizek <[e-mail]>
Signed-off-by: Ian Rogers <[e-mail]>
Tested-by: xaizek <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Link: http://lore.kernel.org/lkml/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/builtin-annotate.c

···
 	struct perf_tool tool;
 	struct perf_session *session;
 	struct annotation_options opts;
-	bool	   use_tui, use_stdio, use_stdio2, use_gtk;
+#ifdef HAVE_SLANG_SUPPORT
+	bool	   use_tui;
+#endif
+	bool	   use_stdio, use_stdio2;
+	bool	   use_gtk;
 	bool	   skip_missing;
 	bool	   has_br_stack;
 	bool	   group_set;
···
 	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
 		    "dump raw trace in ASCII"),
 	OPT_BOOLEAN(0, "gtk", &annotate.use_gtk, "Use the GTK interface"),
+#ifdef HAVE_SLANG_SUPPORT
 	OPT_BOOLEAN(0, "tui", &annotate.use_tui, "Use the TUI interface"),
+#endif
 	OPT_BOOLEAN(0, "stdio", &annotate.use_stdio, "Use the stdio interface"),
 	OPT_BOOLEAN(0, "stdio2", &annotate.use_stdio2, "Use the stdio interface"),
 	OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
···
 
 	if (annotate.use_stdio || annotate.use_stdio2)
 		use_browser = 0;
+#ifdef HAVE_SLANG_SUPPORT
 	else if (annotate.use_tui)
 		use_browser = 1;
+#endif
 	else if (annotate.use_gtk)
 		use_browser = 2;
 

tools/perf/builtin-report.c

···
 	struct perf_tool	tool;
 	struct perf_session	*session;
 	struct evswitch		evswitch;
-	bool			use_tui, use_gtk, use_stdio;
+#ifdef HAVE_SLANG_SUPPORT
+	bool			use_tui;
+#endif
+	bool			use_gtk;
+	bool			use_stdio;
 	bool			show_full_info;
 	bool			show_threads;
 	bool			inverted_callchain;
···
 		    "Show per-thread event counters"),
 	OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
 		   "pretty printing style key: normal raw"),
+#ifdef HAVE_SLANG_SUPPORT
 	OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
+#endif
 	OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
 	OPT_BOOLEAN(0, "stdio", &report.use_stdio,
 		    "Use the stdio interface"),
···
 
 	if (report.use_stdio)
 		use_browser = 0;
+#ifdef HAVE_SLANG_SUPPORT
 	else if (report.use_tui)
 		use_browser = 1;
+#endif
 	else if (report.use_gtk)
 		use_browser = 2;
 

tools/perf/builtin-top.c

···
 		    "display this many functions"),
 	OPT_BOOLEAN('U', "hide_user_symbols", &top.hide_user_symbols,
 		    "hide user symbols"),
+#ifdef HAVE_SLANG_SUPPORT
 	OPT_BOOLEAN(0, "tui", &top.use_tui, "Use the TUI interface"),
+#endif
 	OPT_BOOLEAN(0, "stdio", &top.use_stdio, "Use the stdio interface"),
 	OPT_INCR('v', "verbose", &verbose,
 		    "be more verbose (show counter open errors, etc)"),
···
 
 	if (top.use_stdio)
 		use_browser = 0;
+#ifdef HAVE_SLANG_SUPPORT
 	else if (top.use_tui)
 		use_browser = 1;
+#endif
 
 	setup_browser(false);
 

tools/perf/util/top.h

···
 	int		   print_entries, count_filter, delay_secs;
 	int		   max_stack;
 	bool		   hide_kernel_symbols, hide_user_symbols, zero;
-	bool		   use_tui, use_stdio;
+#ifdef HAVE_SLANG_SUPPORT
+	bool		   use_tui;
+#endif
+	bool		   use_stdio;
 	bool		   vmlinux_warned;
 	bool		   dump_symtab;
 	bool		   stitch_lbr;