--- libreoffice-6.4.2.2/sal/osl/unx/socket.cxx.1	2020-03-14 13:10:11.725559641 +0000
+++ libreoffice-6.4.2.2/sal/osl/unx/socket.cxx	2020-03-14 13:10:54.911745912 +0000
@@ -870,7 +870,7 @@
     static auto const init = []() -> std::pair<oslSocketResult, OUString> {
             sal_Char LocalHostname[256] = "";
 
-#ifdef SYSV
+#if defined(SYSV) && !defined(__sun__)
             struct utsname uts;
 
             if (uname(&uts) < 0)