Source:
https://bugs.ntp.org/show_bug.cgi?id=3688

Juergen Perlinger 2020-12-24 07:10:49 UTC
Created attachment 1760 [details]
ultimate patch, v00

--- a/sntp/log.c	2020-12-24 08:02:05.206004072 +0100
+++ a/sntp/log.c	2020-12-24 08:02:05.206004072 +0100
@@ -2,7 +2,7 @@ 
 
 #include "log.h"
 
-const char *progname;		/* for msyslog use too */
+extern const char *progname;		/* for msyslog use too */
 
 static int counter = 0;
 
--- a/sntp/main.c	2020-12-24 08:02:05.210003956 +0100
+++ a/sntp/main.c	2020-12-24 08:02:05.210003956 +0100
@@ -20,7 +20,6 @@ 
 #include "log.h"
 #include "libntp.h"
 
-
 int shutting_down;
 int time_derived;
 int time_adjusted;
--- a/sntp/main.h	2020-12-24 08:02:05.210003956 +0100
+++ a/sntp/main.h	2020-12-24 08:02:05.210003956 +0100
@@ -16,6 +16,14 @@ 
 
 #include "crypto.h"
 
+/* !Attention! 'progname' must de instantiated in any program that wants
+ * to use this library.  Putting it into the library breaks a lot of
+ * things, since many programs define it itself and then the symbol
+ * might end up twice in the linker.
+ */
+extern const char * progname;
+
+
 void	set_li_vn_mode(struct pkt *spkt, char leap, char version, char mode); 
 extern int sntp_main(int argc, char **argv, const char *);
 int	generate_pkt(struct pkt *x_pkt, const struct timeval *tv_xmt,
--- a/sntp/sntp.c	2020-12-24 08:02:05.210003956 +0100
+++ a/sntp/sntp.c	2020-12-24 08:02:05.210003956 +0100
@@ -2,6 +2,8 @@ 
 
 #include "main.h"
 
+const char * progname;
+
 int 
 main (
 	int	argc,
--- a/sntp/tests/t-log.c	2020-12-24 08:02:05.210003956 +0100
+++ a/sntp/tests/t-log.c	2020-12-24 08:02:05.210003956 +0100
@@ -3,7 +3,6 @@ 
 #include "ntp_types.h"
 
 
-//#include "log.h"
 #include "log.c"
 
 void setUp(void);
--- a/tests/libntp/test-libntp.h	2020-12-24 08:02:05.210003956 +0100
+++ a/tests/libntp/test-libntp.h	2020-12-24 08:02:05.210003956 +0100
@@ -5,4 +5,4 @@ 
 
 time_t timefunc(time_t *ptr);
 void settime(int y, int m, int d, int H, int M, int S);
-time_t nowtime;
+extern time_t nowtime;