Add projects/CMake example

The CMakeLists.txt checks for an installed raylib and downloads and
installs one if none is found. Afterwards, it builds core_basic_window.c

projects/CMake/CMakeLists.txt

@@ -0,0 +1,37 @@
+cmake_minimum_required(VERSION 3.11) # FetchContent is available in 3.11+
+project(example)
+
+find_package(raylib 2.0 QUIET) # Let CMake search for a raylib-config.cmake
+
+# You could change the QUIET above to REQUIRED and remove this if() clause
+# This part downloads raylib and builds it if it's not installed on your system
+if (NOT raylib_FOUND) # If there's none, fetch and build raylib
+  include(FetchContent)
+
+  FetchContent_Declare(
+    raylib
+    URL https://github.com/raysan5/raylib/archive/master.tar.gz
+  )
+
+  FetchContent_GetProperties(raylib)
+  if (NOT raylib_POPULATED) # Have we downloaded raylib yet?
+    set(FETCHCONTENT_QUIET NO)
+    FetchContent_Populate(raylib)
+
+    set(BUILD_EXAMPLES OFF) # don't build the supplied examples
+    set(BUILD_GAMES OFF) # or games
+
+    # build raylib
+    add_subdirectory(${raylib_SOURCE_DIR} ${raylib_BINARY_DIR})
+
+  endif()
+
+endif()
+
+# This is the main part:
+
+add_executable(${PROJECT_NAME} core_basic_window.c)
+#set(raylib_VERBOSE 1)
+target_link_libraries(${PROJECT_NAME} raylib)
+
+# That's it! You should have an example executable that you can run. Have fun!

projects/CMake/core_basic_window.c

@@ -0,0 +1,62 @@
+/*******************************************************************************************
+*
+*   raylib [core] example - Basic window
+*
+*   Welcome to raylib!
+*
+*   To test examples, just press F6 and execute raylib_compile_execute script
+*   Note that compiled executable is placed in the same folder as .c file
+*
+*   You can find all basic examples on C:\raylib\raylib\examples folder or
+*   raylib official webpage: www.raylib.com
+*
+*   Enjoy using raylib. :)
+*
+*   This example has been created using raylib 1.0 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2013-2016 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [core] example - basic window");
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        // TODO: Update your variables here
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawText("Congrats! You created your first window!", 190, 200, 20, LIGHTGRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}

src/CMakeLists.txt

@@ -43,7 +43,7 @@ if(NOT glfw3_FOUND AND NOT USE_EXTERNAL_GLFW STREQUAL "ON" AND "${PLATFORM}" MAT
   list(APPEND raylib_sources $<TARGET_OBJECTS:glfw_objlib>)
 else()
   MESSAGE(STATUS "Using external GLFW")
-  set(GLFW_PKG_DEPS glfw)
+  set(GLFW_PKG_DEPS glfw3)
 endif()
 
 add_definitions("-DRAYLIB_CMAKE=1")