out_printf() is not supposed to be a preprocessor macro

src/include/ngspice/cpextern.h

@@ -119,15 +119,13 @@ extern void cp_init(void);
 extern bool out_moremode;
 extern bool out_isatty;
 extern void out_init(void);
-#ifndef out_printf
-/* don't want to declare it if we have #define'ed it */
+
 #ifdef __GNUC__
 extern void out_printf(char *fmt, ...) __attribute__ ((format (__printf__, 1, 2)));
 #else
 extern void out_printf(char *fmt, ...);
 #endif
 
-#endif
 extern void out_send(char *string);
 
 /* quote.c */

src/ngsconvert.c

@@ -435,9 +435,7 @@ void cp_usrvars(struct variable **v1, struct variable **v2) { *v1 = NULL; *v2 =
 int cp_evloop(char *s) { NG_IGNORE(s); return (0); }
 void cp_ccon(bool o) { NG_IGNORE(o); }
 char*if_errstring(int c) { NG_IGNORE(c); return ("error"); }
-#ifndef out_printf
 void out_printf(char *fmt, ...) { NG_IGNORE(fmt); }
-#endif
 void out_send(char *string) { NG_IGNORE(string); }
 struct variable * cp_enqvar(char *word) { NG_IGNORE(word); return (NULL); }
 struct dvec *vec_get(const char *word) { NG_IGNORE(word); return (NULL); }