diff --git a/loongarch_64/Makefile b/loongarch_64/Makefile
new file mode 100644
index 0000000..0f89614
--- /dev/null
+++ b/loongarch_64/Makefile
@@ -0,0 +1,2 @@
+CDO_ENV = ALT_STRUCT_SIZE=12 BUG_STRUCT_SIZE=12 EX_STRUCT_SIZE=12 JUMP_STRUCT_SIZE=16
+include ../../Makefile.include