1 files changed, 5 insertions, 1 deletions

diff --git a/libbb/safe_gethostname.c b/libbb/safe_gethostname.c
index 7407fb782..e93254b2b 100644
--- a/libbb/safe_gethostname.c
+++ b/libbb/safe_gethostname.c
@@ -59,8 +59,12 @@ char* FAST_FUNC safe_gethostname(void)
  */
 char* FAST_FUNC safe_getdomainname(void)
 {
+/* The field domainname of struct utsname is Linux specific. */
+#if defined(__linux__)
         struct utsname uts;
-
         uname(&uts);
         return xstrndup(!uts.domainname[0] ? "?" : uts.domainname, sizeof(uts.domainname));
+#else
+        return xstrdup("?");
+#endif
 }