make glfw use absolute paths so no include paths have to be supplied

src/platforms/rcore_desktop_glfw.c

@@ -48,7 +48,7 @@
 
 #define GLFW_INCLUDE_NONE       // Disable the standard OpenGL header inclusion on GLFW3
                                 // NOTE: Already provided by rlgl implementation (on glad.h)
-#include "GLFW/glfw3.h"         // GLFW3 library: Windows, OpenGL context and Input management
+#include "../external/glfw/include/GLFW/glfw3.h"         // GLFW3 library: Windows, OpenGL context and Input management
                                 // NOTE: GLFW3 already includes gl.h (OpenGL) headers
 
 // Support retrieving native window handlers
@@ -63,7 +63,7 @@
 
     #define GLFW_EXPOSE_NATIVE_WIN32
     #define GLFW_NATIVE_INCLUDE_NONE // To avoid some symbols re-definition in windows.h
-    #include "GLFW/glfw3native.h"
+    #include "../external/glfw/include/GLFW/glfw3native.h"
 
     #if defined(SUPPORT_WINMM_HIGHRES_TIMER) && !defined(SUPPORT_BUSY_WAIT_LOOP)
         // NOTE: Those functions require linking with winmm library
@@ -89,7 +89,7 @@
             #define GLFW_EXPOSE_NATIVE_WAYLAND
         #endif
 
-        #include "GLFW/glfw3native.h"   // Include native header only once, regardless of how many backends are defined
+        #include "../external/glfw/include/GLFW/glfw3native.h"   // Include native header only once, regardless of how many backends are defined
                                         // Required for: glfwGetX11Window() and glfwGetWaylandWindow()
         #if defined(_GLFW_X11)          // Clean up X11-specific hacks
             #undef Font                 // Revert hack and allow normal raylib Font usage
@@ -101,7 +101,7 @@
 
     //#define GLFW_EXPOSE_NATIVE_COCOA    // WARNING: Fails due to type redefinition
     void *glfwGetCocoaWindow(GLFWwindow* handle);
-    #include "GLFW/glfw3native.h"       // Required for: glfwGetCocoaWindow()
+    #include "../external/glfw/include/GLFW/glfw3native.h"       // Required for: glfwGetCocoaWindow()
 #endif
 
 #include <stddef.h>  // Required for: size_t

src/platforms/rcore_web.c

@@ -44,7 +44,7 @@
 
 #define GLFW_INCLUDE_NONE       // Disable the standard OpenGL header inclusion on GLFW3
                                 // NOTE: Already provided by rlgl implementation (on glad.h)
-#include "GLFW/glfw3.h"         // GLFW3: Windows, OpenGL context and Input management
+#include "../external/glfw/include/GLFW/glfw3.h"         // GLFW3: Windows, OpenGL context and Input management
 
 #include <emscripten/emscripten.h>      // Emscripten functionality for C
 #include <emscripten/html5.h>           // Emscripten HTML5 library