diff --git a/cargo2rulesmk.json b/cargo2rulesmk.json
new file mode 100644
index 0000000..01f7467
--- /dev/null
+++ b/cargo2rulesmk.json
@@ -0,0 +1,3 @@
+{
+  "patch": "patches/rules.mk.diff"
+}
diff --git a/patches/rules.mk.diff b/patches/rules.mk.diff
new file mode 100644
index 0000000..dfe4a6d
--- /dev/null
+++ b/patches/rules.mk.diff
@@ -0,0 +1,11 @@
+diff --git a/rules.mk b/rules.mk
+index 4f4804c..ff3d072 100644
+--- a/rules.mk
++++ b/rules.mk
+@@ -18,5 +18,6 @@ MODULE_LIBRARY_DEPS := \
+ 	external/rust/crates/proc-macro-error-attr \
+ 	external/rust/crates/proc-macro2 \
+ 	external/rust/crates/quote \
++	external/rust/crates/syn \
+ 
+ include make/library.mk
diff --git a/rules.mk b/rules.mk
new file mode 100644
index 0000000..7bc8377
--- /dev/null
+++ b/rules.mk
@@ -0,0 +1,23 @@
+# This file is generated by cargo2rulesmk.py --run --config cargo2rulesmk.json.
+# Do not modify this file as changes will be overridden on upgrade.
+
+LOCAL_DIR := $(GET_LOCAL_DIR)
+MODULE := $(LOCAL_DIR)
+MODULE_CRATE_NAME := proc_macro_error
+MODULE_SRCS := \
+	$(LOCAL_DIR)/src/lib.rs \
+
+MODULE_RUST_EDITION := 2018
+MODULE_RUSTFLAGS += \
+	--cfg 'feature="default"' \
+	--cfg 'feature="syn"' \
+	--cfg 'feature="syn-error"' \
+	--cfg 'skip_ui_tests' \
+
+MODULE_LIBRARY_DEPS := \
+	external/rust/crates/proc-macro-error-attr \
+	external/rust/crates/proc-macro2 \
+	external/rust/crates/quote \
+	external/rust/crates/syn \
+
+include make/library.mk