Remove a BSD-ism.

CTRL('L') is a BSD-ism.  CTRL() is defined in sys/ttydefaults.h
which does not always exist.  Instead of adding scons tests for
needing CTRL() and its include files just replace with a simple
constant.

Needed for musl and found by Baruch Siach <baruch@tkos.co.il>

1 files changed, 5 insertions, 1 deletions

diff --git a/gpsmon.c b/gpsmon.c
index c3001c86..58c83008 100644
--- a/gpsmon.c
+++ b/gpsmon.c
@@ -583,6 +583,9 @@ static void select_packet_monitor(struct gps_device_t *device)
 	(void)wnoutrefresh(devicewin);
 }
 
+/* Control-L character */
+#define CTRL_L 0x0C
+
 static char *curses_get_command(void)
 /* char-by-char nonblocking input, return accumulated command line on \n */
 {
@@ -591,7 +594,8 @@ static char *curses_get_command(void)
     int c;
 
     c = wgetch(cmdwin);
-    if (c == CTRL('L')) {
+    if (CTRL_L == c) {
+        /* ^L is to repaint the screen */
 	(void)clearok(stdscr, true);
 	if (active != NULL && (*active)->initialize != NULL)
 	    (void)(*active)->initialize();