diff --git a/casadi/core/casadi.def b/casadi/core/casadi.def
new file mode 100644
index 0000000000..3069ec9825
--- /dev/null
+++ b/casadi/core/casadi.def
@@ -0,0 +1,37 @@
+LIBRARY libcasadi.dll
+EXPORTS
+    casadi_c_activate
+    casadi_c_checkout
+    casadi_c_checkout_id
+    casadi_c_decref
+    casadi_c_decref_id
+    casadi_c_default_in
+    casadi_c_default_in_id
+    casadi_c_eval
+    casadi_c_eval_id
+    casadi_c_id
+    casadi_c_incref
+    casadi_c_incref_id
+    casadi_c_int_width
+    casadi_c_name
+    casadi_c_name_id
+    casadi_c_name_in
+    casadi_c_name_in_id
+    casadi_c_name_out
+    casadi_c_name_out_id
+    casadi_c_n_in
+    casadi_c_n_in_id
+    casadi_c_n_loaded
+    casadi_c_n_out
+    casadi_c_n_out_id
+    casadi_c_pop
+    casadi_c_push_file
+    casadi_c_real_width
+    casadi_c_release
+    casadi_c_release_id
+    casadi_c_sparsity_in
+    casadi_c_sparsity_in_id
+    casadi_c_sparsity_out
+    casadi_c_sparsity_out_id
+    casadi_c_work
+    casadi_c_work_id
\ No newline at end of file
diff --git a/external_packages/osqp/osqp.def b/external_packages/osqp/osqp.def
new file mode 100644
index 0000000000..8bce0f9a8d
--- /dev/null
+++ b/external_packages/osqp/osqp.def
@@ -0,0 +1,11 @@
+LIBRARY libosqp.dll
+EXPORTS
+    osqp_set_default_settings
+    osqp_setup
+    osqp_solve
+    osqp_cleanup
+    osqp_update_lin_cost
+    osqp_update_bounds
+    osqp_warm_start_x
+    osqp_warm_start_y
+    osqp_update_P_A
\ No newline at end of file