diff --git a/.gitignore b/.gitignore
index aaaec40..92622d3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
+build*/
+subprojects/*/
+
 # Template from:
 # https://github.com/github/gitignore/blob/master/Autotools.gitignore