diff --git a/build.properties b/build.properties
new file mode 100644
index 0000000000..957de32548
--- /dev/null
+++ b/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject
+imports=!org.objectweb.asm.*
diff --git a/extensions/assistedinject/build.properties b/extensions/assistedinject/build.properties
new file mode 100644
index 0000000000..542718ffb2
--- /dev/null
+++ b/extensions/assistedinject/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject.assistedinject
+fragment=true
diff --git a/extensions/dagger-adapter/build.properties b/extensions/dagger-adapter/build.properties
new file mode 100644
index 0000000000..f6e84e3fee
--- /dev/null
+++ b/extensions/dagger-adapter/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject.daggeradapter
+fragment=true
diff --git a/extensions/grapher/build.properties b/extensions/grapher/build.properties
new file mode 100644
index 0000000000..70955fed4c
--- /dev/null
+++ b/extensions/grapher/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject.grapher
+fragment=true
diff --git a/extensions/jmx/build.properties b/extensions/jmx/build.properties
new file mode 100644
index 0000000000..d3f0a6fe9f
--- /dev/null
+++ b/extensions/jmx/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject.tools.jmx
+fragment=true
\ No newline at end of file
diff --git a/extensions/jndi/build.properties b/extensions/jndi/build.properties
new file mode 100644
index 0000000000..d3bc9c5b94
--- /dev/null
+++ b/extensions/jndi/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject.jndi
+fragment=true
\ No newline at end of file
diff --git a/extensions/persist/build.properties b/extensions/persist/build.properties
new file mode 100644
index 0000000000..8d72ca68e3
--- /dev/null
+++ b/extensions/persist/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject.persist
+fragment=true
diff --git a/extensions/servlet/build.properties b/extensions/servlet/build.properties
new file mode 100644
index 0000000000..1029c813b8
--- /dev/null
+++ b/extensions/servlet/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject.servlet
+fragment=true
diff --git a/extensions/spring/build.properties b/extensions/spring/build.properties
new file mode 100644
index 0000000000..eb04e2b53b
--- /dev/null
+++ b/extensions/spring/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject.spring
+fragment=true
diff --git a/extensions/struts2/build.properties b/extensions/struts2/build.properties
new file mode 100644
index 0000000000..c47691480d
--- /dev/null
+++ b/extensions/struts2/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject.struts2
+fragment=true
diff --git a/extensions/testlib/build.properties b/extensions/testlib/build.properties
new file mode 100644
index 0000000000..0cbfb50fef
--- /dev/null
+++ b/extensions/testlib/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject.testing
+fragment=true
diff --git a/extensions/throwingproviders/build.properties b/extensions/throwingproviders/build.properties
new file mode 100644
index 0000000000..9c11302376
--- /dev/null
+++ b/extensions/throwingproviders/build.properties
@@ -0,0 +1,2 @@
+module=com.google.inject.throwingproviders
+fragment=true