diff --git a/simgear/math/.gitignore b/simgear/math/.gitignore
new file mode 100644
index 00000000..ec5cba1d
--- /dev/null
+++ b/simgear/math/.gitignore
@@ -0,0 +1,3 @@
+SGMathTest
+SGGeometryTest
+
diff --git a/simgear/props/.gitignore b/simgear/props/.gitignore
new file mode 100644
index 00000000..671825c5
--- /dev/null
+++ b/simgear/props/.gitignore
@@ -0,0 +1,2 @@
+props_test
+
diff --git a/simgear/scene/bvh/.gitignore b/simgear/scene/bvh/.gitignore
new file mode 100644
index 00000000..8a0ce98b
--- /dev/null
+++ b/simgear/scene/bvh/.gitignore
@@ -0,0 +1,2 @@
+bvhtest
+
diff --git a/simgear/sound/.gitignore b/simgear/sound/.gitignore
new file mode 100644
index 00000000..d9d749a7
--- /dev/null
+++ b/simgear/sound/.gitignore
@@ -0,0 +1,2 @@
+openal_test*
+