Properly link flecs library

engine/libs/flecs/examples/cpp/entities/basics/.gitignore

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+.bake_cache
+.DS_Store
+.vscode
+gcov
+bin

engine/libs/flecs/examples/cpp/entities/basics/include/basics.h

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+#ifndef BASICS_H
+#define BASICS_H
+
+/* This generated file contains includes for project dependencies */
+#include "basics/bake_config.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+

engine/libs/flecs/examples/cpp/entities/basics/include/basics/bake_config.h

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+/*
+                                   )
+                                  (.)
+                                  .|.
+                                  | |
+                              _.--| |--._
+                           .-';  ;`-'& ; `&.
+                          \   &  ;    &   &_/
+                           |"""---...---"""|
+                           \ | | | | | | | /
+                            `---.|.|.|.---'
+
+ * This file is generated by bake.lang.c for your convenience. Headers of
+ * dependencies will automatically show up in this file. Include bake_config.h
+ * in your main project file. Do not edit! */
+
+#ifndef BASICS_BAKE_CONFIG_H
+#define BASICS_BAKE_CONFIG_H
+
+/* Headers of public dependencies */
+#include <flecs.h>
+
+#endif
+

engine/libs/flecs/examples/cpp/entities/basics/project.json

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+{
+    "id": "basics",
+    "type": "application",
+    "value": {
+        "author": "Jane Doe",
+        "description": "A simple hello world flecs application",
+        "use": [
+            "flecs"
+        ],
+        "language": "c++"
+    }
+}

engine/libs/flecs/examples/cpp/entities/basics/src/main.cpp

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+#include <basics.h>
+#include <iostream>
+
+struct Position {
+    double x, y;
+};
+
+struct Walking { };
+
+int main(int, char *[]) {
+    flecs::world ecs;
+
+    // Create an entity with name Bob
+    flecs::entity bob = ecs.entity("Bob")
+        // The set operation finds or creates a component, and sets it.
+        // Components are automatically registered with the world.
+        .set<Position>({10, 20}) 
+        // The add operation adds a component without setting a value. This is
+        // useful for tags, or when adding a component with its default value.
+        .add<Walking>();
+
+    // Get the value for the Position component
+    const Position* ptr = bob.get<Position>();
+    std::cout << "{" << ptr->x << ", " << ptr->y << "}" << "\n";
+
+    // Overwrite the value of the Position component
+    bob.set<Position>({20, 30});
+
+    // Create another named entity
+    flecs::entity alice = ecs.entity("Alice")
+        .set<Position>({10, 20});
+
+    // Add a tag after entity is created
+    alice.add<Walking>();
+
+    // Print all of the components the entity has. This will output:
+    //    Position, Walking, (Identifier,Name)
+    std::cout << "[" << alice.type().str() << "]" << "\n";
+
+    // Remove tag
+    alice.remove<Walking>();
+
+    // Iterate all entities with Position
+    ecs.each([](flecs::entity e, Position& p) {
+        std::cout << e.name() << ": {" << p.x << ", " << p.y << "}" << "\n";
+    });
+
+    // Output
+    //  {10, 20}
+    //  [Position, Walking, (Identifier,Name)]
+    //  Alice: {10, 20}
+    //  Bob: {20, 30}
+}