diff --git a/include/platform.h b/include/platform.h
index 317349f..e2136a2 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -363,4 +363,14 @@
 #endif
 #endif
 
+/* The field domainname of struct utsname is Linux specific. */
+#if !defined(__linux__)
+# define HAVE_NO_UTSNAME_DOMAINNAME
+#endif
+
+/* If this system doesn't have IUCLC bit in struct termios::c_iflag... */
+#ifndef IUCLC
+# define IUCLC 0
+#endif
+
 #endif	/* platform.h	*/
diff --git a/libbb/login.c b/libbb/login.c
index b3e199c..98e641c 100644
--- a/libbb/login.c
+++ b/libbb/login.c
@@ -62,10 +62,12 @@ void FAST_FUNC print_login_issue(const char *issue_file, const char *tty)
 			case 'm':
 				outbuf = uts.machine;
 				break;
+#ifndef HAVE_NO_UTSNAME_DOMAINNAME
 			case 'D':
 			case 'o':
 				outbuf = uts.domainname;
 				break;
+#endif
 			case 'd':
 				strftime(buf, sizeof(buf), fmtstr_d, localtime(&t));
 				break;