fix bsd/bip6.c:35:16: error: variadic macros are a C99 feature (#805)

Copy debug_fprintf_bip6() from linux

ports/bsd/bip6.c

@@ -15,6 +15,9 @@
 #include "bacnet/datalink/bip6.h"
 #include "bacnet/basic/object/device.h"
 #include "bacnet/basic/bbmd6/h_bbmd6.h"
+#if DEBUG_ENABLED
+#include "bacnet/basic/sys/debug.h"
+#endif
 #include "bacport.h"
 
 #if defined(__APPLE__) || defined(__darwin__)
@@ -29,17 +32,31 @@
 
 /* enable debugging */
 static bool BIP6_Debug = false;
-#if PRINT_ENABLED
+
-#include <stdarg.h>
+/**
-#include <stdio.h>
+ * @brief Conditionally use the debug_printf function
-#define PRINTF(...) \
+ *
-    if (BIP6_Debug) { \
+ * @param stream - file stream to print to
-        fprintf(stderr,__VA_ARGS__); \
+ * @param format - printf format string
-        fflush(stderr); \
+ * @param ... - variable arguments
+ * @note This function is only works if
+ * PRINT_ENABLED and BIP6_Debug is non-zero
+ */
+static void debug_fprintf_bip6(FILE *stream, const char *format, ...)
+{
+#if DEBUG_ENABLED
+    va_list ap;
+
+    if (BIP6_Debug) {
+        va_start(ap, format);
+        debug_fprintf(stream, format, ap);
+        va_end(ap);
     }
 #else
-#define PRINTF(...)
+    (void)stream;
+    (void)format;
 #endif
+}
 
 /**
  * @brief Print the IPv6 address with debug info
@@ -48,7 +65,9 @@ static bool BIP6_Debug = false;
  */
 static void debug_print_ipv6(const char *str, const struct in6_addr *addr)
 {
-    PRINTF("BIP6: %s "
+    debug_fprintf_bip6(
+        stdout,
+        "BIP6: %s "
         "%02x%02x:%02x%02x:%02x%02x:%02x%02x:"
         "%02x%02x:%02x%02x:%02x%02x:%02x%02x\n",
         str, (int)addr->s6_addr[0], (int)addr->s6_addr[1],
@@ -62,7 +81,7 @@ static void debug_print_ipv6(const char *str, const struct in6_addr *addr)
 }
 
 /**
- * @brief Enabled debug printing of BACnet/IPv4
+ * @brief Enabled debug printing of BACnet/IPv6
  */
 void bip6_debug_enable(void)
 {
@@ -95,11 +114,11 @@ void bip6_set_interface(char *ifname)
     }
     ifa_tmp = ifa;
     if (BIP6_Debug) {
-        PRINTF("BIP6: seeking interface: %s\n", ifname);
+        debug_fprintf_bip6(stdout, "BIP6: seeking interface: %s\n", ifname);
     }
     while (ifa_tmp) {
         if ((ifa_tmp->ifa_addr) && (ifa_tmp->ifa_addr->sa_family == AF_INET6)) {
-            PRINTF("BIP6: found interface: %s\n", ifa_tmp->ifa_name);
+            debug_fprintf_bip6(stdout, "BIP6: found interface: %s\n", ifa_tmp->ifa_name);
         }
         if ((ifa_tmp->ifa_addr) && (ifa_tmp->ifa_addr->sa_family == AF_INET6) &&
             (strcasecmp(ifa_tmp->ifa_name, ifname) == 0)) {
@@ -120,7 +139,7 @@ void bip6_set_interface(char *ifname)
         ifa_tmp = ifa_tmp->ifa_next;
     }
     if (!found) {
-        PRINTF("BIP6: unable to set interface: %s\n", ifname);
+        debug_fprintf_bip6(stdout, "BIP6: unable to set interface: %s\n", ifname);
         exit(1);
     }
 }
@@ -409,7 +428,7 @@ bool bip6_init(char *ifname)
     if (BIP6_Addr.port == 0) {
         bip6_set_port(0xBAC0U);
     }
-    PRINTF("BIP6: IPv6 UDP port: 0x%04X\n", BIP6_Addr.port);
+    debug_fprintf_bip6(stdout, "BIP6: IPv6 UDP port: 0x%04X\n", BIP6_Addr.port);
     if (BIP6_Broadcast_Addr.address[0] == 0) {
         bvlc6_address_set(&BIP6_Broadcast_Addr, BIP6_MULTICAST_SITE_LOCAL, 0, 0,
             0, 0, 0, 0, BIP6_MULTICAST_GROUP_ID);

ports/linux/bip6.c

@@ -69,7 +69,7 @@ static void debug_print_ipv6(const char *str, const struct in6_addr *addr)
 }
 
 /**
- * @brief Enabled debug printing of BACnet/IPv4
+ * @brief Enabled debug printing of BACnet/IPv6
  */
 void bip6_debug_enable(void)
 {