Ignore build byproducts

Change-Id: I3a677a809f372a147cd4855abe3f0db14f738450
diff --git a/.gitignore b/.gitignore
index ccb08fa..d525ada 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,5 @@
 bin/*.hh
 *.o
 *.log
+*.so
+compile