cheatsheet: Add SDK build instructions
diff --git a/cheatsheet.md b/cheatsheet.md
index 656e1af..273557f 100644
--- a/cheatsheet.md
+++ b/cheatsheet.md
@@ -33,6 +33,17 @@
$ bitbake obmc-phosphor-image
```
+## Building the OpenBMC SDK
+Looking for a way to compile your programs for 'ARM' but you happen to be running on a 'PPC' or 'x86' system? You can build the sdk receive a fakeroot environment.
+```
+$ bitbake -c populate_sdk obmc-phosphor-image
+$ ./tmp/deploy/sdk/openbmc-phosphor-glibc-x86_64-obmc-phosphor-image-armv5e-toolchain-1.8+snapshot.sh
+```
+Follow the prompts. After it has been installed the default to setup your env will be similar to this command
+```
+. /opt/openbmc-phosphor/1.8+snapshot/environment-setup-armv5e-openbmc-linux-gnueabi
+```
+
## Rebuilds & Reconfiguration
You can reconfigure your build by removing the build/conf dir: