File radvd-configure.patch of Package radvd

diff -rupN radvd-2.2.old/configure.ac radvd-2.2/configure.ac
--- radvd-2.2.old/configure.ac	2014-07-29 08:26:43.000000000 -0700
+++ radvd-2.2/configure.ac	2014-07-29 19:23:38.842918895 -0700
@@ -47,7 +47,9 @@ you must specifiy it with --target on th
 esac
 
 dnl Determine CC and preset CFLAGS
-AC_PROG_CC_C99
+AC_PROG_CC_STDC
+AC_USE_SYSTEM_EXTENSIONS
+AC_SYS_LARGEFILE
 AC_PROG_RANLIB
 PKG_CHECK_MODULES([CHECK], [check >= 0.9.4])