I do it

Dependencies:   MCP23S17 mbed

Revision:
0:34f3e96385fa
diff -r 000000000000 -r 34f3e96385fa mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Oct 05 18:52:46 2017 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/ad3be0349dc5
\ No newline at end of file