Properly link flecs library

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

@@ -0,0 +1,48 @@
+#include <basics_bitmask.h>
+#include <stdio.h>
+
+typedef uint32_t Toppings;
+static const uint32_t Bacon = 0x1;
+static const uint32_t Lettuce = 0x2;
+static const uint32_t Tomato = 0x4;
+
+typedef struct {
+    Toppings toppings;
+} Sandwich;
+
+int main(int argc, char *argv[]) {
+    ecs_world_t *ecs = ecs_init_w_args(argc, argv);
+
+    // Register component as usual
+    ECS_COMPONENT(ecs, Toppings);
+    ECS_COMPONENT(ecs, Sandwich);
+
+    // Add reflection data to components
+    ecs_bitmask(ecs,{
+        .entity = ecs_id(Toppings), // Make sure to use existing id
+        .constants = {
+            { .name = "Bacon", .value = Bacon },
+            { .name = "Lettuce", .value = Lettuce },
+            { .name = "Tomato", .value = Tomato }
+        }
+    });
+
+    ecs_struct(ecs, {
+        .entity = ecs_id(Sandwich), // Make sure to use existing id
+        .members = {
+            { .name = "toppings", .type = ecs_id(Toppings) }
+        }
+    });
+
+    // Create entity with Position as usual
+    ecs_entity_t ent = ecs_new_id(ecs);
+    ecs_set(ecs, ent, Sandwich, {Bacon | Lettuce});
+
+    // Convert position component to flecs expression string
+    const Sandwich *ptr = ecs_get(ecs, ent, Sandwich);
+    char *str = ecs_ptr_to_expr(ecs, ecs_id(Sandwich), ptr);
+    printf("%s\n", str); // {toppings: Bacon|Lettuce}
+    ecs_os_free(str);
+
+    ecs_fini(ecs);
+}