syslog-ng: fix build without ipv6 in distro features

Sumbitted to https://github.com/syslog-ng/syslog-ng/pull/4880

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-support/syslog-ng/files/0001-macros-guard-ipv6-code-with-SYSLOG_NG_ENABLE_IPV6.patch

@@ -0,0 +1,40 @@
+From 896d77dd949b52d6ea5798e5a038ba97d6b802be Mon Sep 17 00:00:00 2001
+From: Peter Marko <peter.marko@siemens.com>
+Date: Thu, 4 Apr 2024 15:44:18 +0200
+Subject: [PATCH] macros: guard ipv6 code with SYSLOG_NG_ENABLE_IPV6
+
+With ipv6 disabled, there are linking errors currently.
+This fixes it by not using the symbols when IPv6 is disabled.
+
+Solves #4810 with my config options
+https://github.com/openembedded/meta-openembedded/blob/2487e65ee3842b6ae0c7a2628985be6189ed9ebf/meta-oe/recipes-support/syslog-ng/syslog-ng_4.6.0.bb
+
+Upstream-Status: Submitted [https://github.com/syslog-ng/syslog-ng/pull/4880]
+
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ lib/template/macros.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/lib/template/macros.c b/lib/template/macros.c
+index 54142706c..fcb83637f 100644
+--- a/lib/template/macros.c
++++ b/lib/template/macros.c
+@@ -277,12 +277,14 @@ _get_originating_ip_protocol(const LogMessage *msg)
+     return 0;
+   if (g_sockaddr_inet_check(msg->saddr))
+     return 4;
++#if SYSLOG_NG_ENABLE_IPV6
+   if (g_sockaddr_inet6_check(msg->saddr))
+     {
+       if (g_sockaddr_inet6_is_v4_mapped(msg->saddr))
+         return 4;
+       return 6;
+     }
++#endif
+   return 0;
+ }
+ 
+-- 
+2.30.2
+

meta-oe/recipes-support/syslog-ng/syslog-ng_4.6.0.bb

@@ -23,6 +23,7 @@ SRC_URI = "https://github.com/balabit/syslog-ng/releases/download/${BP}/${BP}.ta
            file://syslog-ng-tmp.conf \
            file://syslog-ng.service-the-syslog-ng-service.patch \
            file://0001-Fix-buildpaths-warning.patch \
+           file://0001-macros-guard-ipv6-code-with-SYSLOG_NG_ENABLE_IPV6.patch \
 "
 SRC_URI:append:powerpc64le = " file://0001-plugin.c-workaround-powerpc64le-segfaults-error.patch"