wip: lib support

test/lib/a_module.cpp

@@ -0,0 +1,29 @@
+#include <entt/entity/registry.hpp>
+
+#ifndef LIB_EXPORT
+#if defined _WIN32 || defined __CYGWIN__
+#define LIB_EXPORT __declspec(dllexport)
+#elif defined __GNUC__
+#define LIB_EXPORT __attribute__((visibility("default")))
+#else
+#define LIB_EXPORT
+#endif
+#endif
+
+LIB_EXPORT typename entt::registry<>::component_type a_module_int_type() {
+    entt::registry<> registry;
+
+    (void)registry.type<double>();
+    (void)registry.type<float>();
+
+    return registry.type<int>();
+}
+
+LIB_EXPORT typename entt::registry<>::component_type a_module_char_type() {
+    entt::registry<> registry;
+
+    (void)registry.type<double>();
+    (void)registry.type<float>();
+
+    return registry.type<char>();
+}