diff --git a/m4/.gitignore b/m4/.gitignore
new file mode 100644
index 0000000000..d425a9182e
--- /dev/null
+++ b/m4/.gitignore
@@ -0,0 +1,3 @@
+!/ax_prog_cc_for_build.m4
+!/pkg_config_for_build.m4
+*.m4