diff --git a/Makefile.am b/Makefile.am
index 11013eef7..14e1a1ff6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,6 +1,6 @@
 AUTOMAKE_OPTIONS = foreign
 
-SUBDIRS = auto3 automation aegisub po
+SUBDIRS = aegisub auto3 automation po m4macros
 
 EXTRA_DIST = \
 	intltool-extract.in \
diff --git a/m4macros/Makefile.am b/m4macros/Makefile.am
new file mode 100644
index 000000000..6f77e0af0
--- /dev/null
+++ b/m4macros/Makefile.am
@@ -0,0 +1,6 @@
+EXTRA_DIST = \
+	ac_flag.m4 \
+	acx_pthread.m4 \
+	ax_check_gl.m4 \
+	ax_lang_compiler_ms.m4 \
+	check_gnu_make.m4