Properly link flecs library

engine/libs/flecs/examples/c/reflection/runtime_component/src/main.c

@@ -0,0 +1,32 @@
+#include <runtime_component.h>
+#include <stdio.h>
+
+int main(int argc, char *argv[]) {
+    ecs_world_t *ecs = ecs_init_w_args(argc, argv);
+
+    // Create component for a type that isn't known at compile time
+    ecs_entity_t Position = ecs_struct(ecs, {
+        .members = {
+            { .name = "x", .type = ecs_id(ecs_f32_t) }, // builtin float type
+            { .name = "y", .type = ecs_id(ecs_f32_t) }
+        }
+    });
+
+    // Create entity, set value of position using reflection API
+    ecs_entity_t ent = ecs_new_entity(ecs, "ent");
+    void *ptr = ecs_get_mut_id(ecs, ent, Position);
+
+    ecs_meta_cursor_t cur = ecs_meta_cursor(ecs, Position, ptr);
+    ecs_meta_push(&cur);          // {
+    ecs_meta_set_float(&cur, 10); //   10
+    ecs_meta_next(&cur);          //   ,
+    ecs_meta_set_float(&cur, 20); //   20
+    ecs_meta_pop(&cur);           // }
+
+    // Convert component to string
+    char *str = ecs_ptr_to_expr(ecs, Position, ptr);
+    printf("%s\n", str); // {x: 10, y: 20}
+    ecs_os_free(str);
+
+    ecs_fini(ecs);
+}