Configure command-line interface for VxWorks

Add new LEDLIB and OTHER configuration options.
Fix typo in vxWorks/osdReadline.c
Use LEDLIB on VxWorks.

Fixes LP: #1741578

configure/os/CONFIG.Common.vxWorksCommon

@@ -170,6 +170,10 @@ COMPILE.ctdt = $(CC) -c $(CPPFLAGS) $(CFLAGS_ctdt) $(INCLUDES) $(SOURCE_FLAG)
 VXCPPFLAGS = $(filter-out $(OP_SYS_INCLUDE_CPPFLAGS),$(CPPFLAGS))
 PREPROCESS.cpp = $(CPP) $(VXCPPFLAGS) $(INCLUDES) $< > $@
 
+#--------------------------------------------------
+# Use LEDLIB for command-line editing
+COMMANDLINE_LIBRARY = LEDLIB
+
 #--------------------------------------------------
 # Allow site overrides
 -include $(CONFIG)/os/CONFIG_SITE.Common.vxWorksCommon

src/libCom/osi/epicsReadline.c

@@ -15,8 +15,15 @@
 #include "envDefs.h"
 #include "epicsReadline.h"
 
+/* Basic command-line input, no editing or history: */
 #define EPICS_COMMANDLINE_LIBRARY_EPICS     0
+
+/*  OS-specific command-line editing and/or history: */
 #define EPICS_COMMANDLINE_LIBRARY_LIBTECLA  1
+#define EPICS_COMMANDLINE_LIBRARY_LEDLIB    1
+#define EPICS_COMMANDLINE_LIBRARY_OTHER     1
+
+/* GNU readline, or Apple's libedit wrapper: */
 #define EPICS_COMMANDLINE_LIBRARY_READLINE  2
 #define EPICS_COMMANDLINE_LIBRARY_READLINE_CURSES  2
 #define EPICS_COMMANDLINE_LIBRARY_READLINE_NCURSES 2
@@ -42,14 +49,10 @@ static void osdReadlineBegin(struct readlineContext * c) {}
 static char * osdReadline(const char *prompt, struct readlineContext * c) { return NULL; }
 static void osdReadlineEnd(struct readlineContext * c) {}
 
+#elif EPICS_COMMANDLINE_LIBRARY == EPICS_COMMANDLINE_LIBRARY_READLINE
+#  include "gnuReadline.c"
 #else
-
-#  if EPICS_COMMANDLINE_LIBRARY == EPICS_COMMANDLINE_LIBRARY_READLINE
-#    include "gnuReadline.c"
-#  else
-#    include "osdReadline.c"
-#  endif
-
+#  include "osdReadline.c"
 #endif
 
 /*

src/libCom/osi/os/vxWorks/osdReadline.c

@@ -33,7 +33,7 @@ struct osdContext {
 static void
 osdReadlineBegin(struct readlineContext *context)
 {
-    struct osdContext osd = malloc(sizeof *osd);
+    struct osdContext *osd = malloc(sizeof *osd);
 
     if (osd != NULL) {
         osd->ledId = (LED_ID) ERROR;