http://bugs.gentoo.org/120568
https://bugzilla.samba.org/show_bug.cgi?id=3462

--- samba/source/configure.in
+++ samba/source/configure.in
@@ -1193,7 +1193,11 @@
 #endif
        exit(0);
 }
-], [linux_getgrouplist_ok=yes], [linux_getgrouplist_ok=no])
+], [linux_getgrouplist_ok=yes], [linux_getgrouplist_ok=no],
+[
+AC_MSG_WARN([cannot run when cross-compiling])
+linux_getgrouplist_ok=yes
+])
        if test x"$linux_getgrouplist_ok" = x"yes"; then
           AC_DEFINE(HAVE_GETGROUPLIST, 1, [Have good getgrouplist])
        fi