diff --git a/.hgignore b/.hgignore
--- a/.hgignore
+++ b/.hgignore
@@ -34,3 +34,8 @@
 ^objs.*/.*
 ^test/[a-z_]*$
 ^demo/.*_demo$
+^build/.*
+CMakeFiles
+DartTestfile.txt
+cmake_install.cmake
+CMakeCache.txt