Author: Andreas Beckmann <anbe@debian.org>
Description: fix building with -Werror=implicit-function-declaration

--- a/configure
+++ b/configure
@@ -167,27 +167,31 @@ int main(int argc, char **argv) {
 EOF
 
 if ac_link "for socket routines" <<EOF
-int main() { connect(); accept(); return 0; }
+#include <sys/socket.h>
+int main() { connect(0, 0, 0); accept(0, 0, 0); return 0; }
 EOF
 then
   LIBSOCKET=
 else
   LIBSOCKET="-lsocket -lnsl"
   ac_link "for socket routines in $LIBSOCKET" "$LIBSOCKET" <<EOF || ac_error
-int main() { connect(); accept(); return 0; }
+#include <sys/socket.h>
+int main() { connect(0, 0, 0); accept(0, 0, 0); return 0; }
 EOF
 fi
 ac_subst LIBSOCKET
 
 if ac_link "for gethostbyname()" $LIBSOCKET <<EOF
-int main() { gethostbyname(); return 0; }
+#include <netdb.h>
+int main() { gethostbyname(0); return 0; }
 EOF
 then
   LIBRESOLV=
 else
   LIBRESOLV="-lresolv"
   ac_link "for gethostbyname() in $LIBRESOLV" "$LIBRESOLV $LIBSOCKET" <<EOF || ac_error
-int main() { gethostbyname(); return 0; }
+#include <netdb.h>
+int main() { gethostbyname(0); return 0; }
 EOF
 fi
 ac_subst LIBRESOLV