diff --git a/ports/python/python.normalize b/ports/python/python.normalize
new file mode 100644
index 00000000..43b8db73
--- /dev/null
+++ b/ports/python/python.normalize
@@ -0,0 +1,3 @@
+rm -rf -- 'Python/graminit.c'
+rm -rf -- 'Python/importlib_external.h'
+rm -rf -- 'Python/importlib.h'
diff --git a/ports/tar/tar.normalize b/ports/tar/tar.normalize
new file mode 100644
index 00000000..c06153ab
--- /dev/null
+++ b/ports/tar/tar.normalize
@@ -0,0 +1 @@
+rm -rf -- 'doc/stamp-vti'
diff --git a/ports/texinfo/texinfo.normalize b/ports/texinfo/texinfo.normalize
new file mode 100644
index 00000000..f1f0f557
--- /dev/null
+++ b/ports/texinfo/texinfo.normalize
@@ -0,0 +1,3 @@
+rm -rf -- 'doc/Makefile.gdoc'
+rm -rf -- 'doc/stamp-1'
+rm -rf -- 'doc/stamp-vti'