Properly link flecs library

engine/libs/flecs/src/datastructures/stack_allocator.h

@@ -0,0 +1,83 @@
+/**
+ * @file datastructures/stack_allocator.h
+ * @brief Stack allocator.
+ */
+
+#ifndef FLECS_STACK_ALLOCATOR_H
+#define FLECS_STACK_ALLOCATOR_H
+
+/** Stack allocator for quick allocation of small temporary values */
+#define ECS_STACK_PAGE_SIZE (4096)
+
+typedef struct ecs_stack_page_t {
+    void *data;
+    struct ecs_stack_page_t *next;
+    int16_t sp;
+    uint32_t id;
+} ecs_stack_page_t;
+
+typedef struct ecs_stack_t {
+    ecs_stack_page_t first;
+    ecs_stack_page_t *tail_page;
+    ecs_stack_cursor_t *tail_cursor;
+#ifdef FLECS_DEBUG
+    int32_t cursor_count;
+#endif
+} ecs_stack_t;
+
+FLECS_DBG_API
+void flecs_stack_init(
+    ecs_stack_t *stack);
+
+FLECS_DBG_API
+void flecs_stack_fini(
+    ecs_stack_t *stack);
+
+FLECS_DBG_API
+void* flecs_stack_alloc(
+    ecs_stack_t *stack, 
+    ecs_size_t size,
+    ecs_size_t align);
+
+#define flecs_stack_alloc_t(stack, T)\
+    flecs_stack_alloc(stack, ECS_SIZEOF(T), ECS_ALIGNOF(T))
+
+#define flecs_stack_alloc_n(stack, T, count)\
+    flecs_stack_alloc(stack, ECS_SIZEOF(T) * count, ECS_ALIGNOF(T))
+
+FLECS_DBG_API
+void* flecs_stack_calloc(
+    ecs_stack_t *stack, 
+    ecs_size_t size,
+    ecs_size_t align);
+
+#define flecs_stack_calloc_t(stack, T)\
+    flecs_stack_calloc(stack, ECS_SIZEOF(T), ECS_ALIGNOF(T))
+
+#define flecs_stack_calloc_n(stack, T, count)\
+    flecs_stack_calloc(stack, ECS_SIZEOF(T) * count, ECS_ALIGNOF(T))
+
+FLECS_DBG_API
+void flecs_stack_free(
+    void *ptr,
+    ecs_size_t size);
+
+#define flecs_stack_free_t(ptr, T)\
+    flecs_stack_free(ptr, ECS_SIZEOF(T))
+
+#define flecs_stack_free_n(ptr, T, count)\
+    flecs_stack_free(ptr, ECS_SIZEOF(T) * count)
+
+void flecs_stack_reset(
+    ecs_stack_t *stack);
+
+FLECS_DBG_API
+ecs_stack_cursor_t* flecs_stack_get_cursor(
+    ecs_stack_t *stack);
+
+FLECS_DBG_API
+void flecs_stack_restore_cursor(
+    ecs_stack_t *stack,
+    ecs_stack_cursor_t *cursor);
+
+#endif