Improve support for `PLATFORM_DESKTOP_WIN32` in src/Makefile (#5311)

Co-authored-by: Uneven Prankster <unevenprankster@pm.me>

src/Makefile

@@ -130,7 +130,7 @@ HOST_PLATFORM_OS ?= WINDOWS
 PLATFORM_OS ?= WINDOWS
 
 # Determine PLATFORM_OS when required
-ifeq ($(TARGET_PLATFORM),$(filter $(TARGET_PLATFORM),PLATFORM_DESKTOP_GLFW PLATFORM_DESKTOP_SDL PLATFORM_DESKTOP_RGFW PLATFORM_WEB PLATFORM_WEB_RGFW PLATFORM_ANDROID))
+ifeq ($(TARGET_PLATFORM),$(filter $(TARGET_PLATFORM),PLATFORM_DESKTOP_GLFW PLATFORM_DESKTOP_SDL PLATFORM_DESKTOP_RGFW PLATFORM_DESKTOP_WIN32 PLATFORM_WEB PLATFORM_WEB_RGFW PLATFORM_ANDROID))
     # No uname.exe on MinGW!, but OS=Windows_NT on Windows!
     # ifeq ($(UNAME),Msys) -> Windows
     ifeq ($(OS),Windows_NT)
@@ -252,6 +252,14 @@ ifeq ($(TARGET_PLATFORM),PLATFORM_DESKTOP_RGFW)
     #GRAPHICS = GRAPHICS_API_OPENGL_43          # Uncomment to use OpenGL 4.3
     #GRAPHICS = GRAPHICS_API_OPENGL_ES2         # Uncomment to use OpenGL ES 2.0 (ANGLE)
 endif
+ifeq ($(TARGET_PLATFORM),PLATFORM_DESKTOP_WIN32)
+    GRAPHICS ?= GRAPHICS_API_OPENGL_33
+    #GRAPHICS = GRAPHICS_API_OPENGL_11_SOFTWARE # Uncomment to use software rendering
+    #GRAPHICS = GRAPHICS_API_OPENGL_11          # Uncomment to use OpenGL 1.1
+    #GRAPHICS = GRAPHICS_API_OPENGL_21          # Uncomment to use OpenGL 2.1
+    #GRAPHICS = GRAPHICS_API_OPENGL_43          # Uncomment to use OpenGL 4.3
+    #GRAPHICS = GRAPHICS_API_OPENGL_ES2         # Uncomment to use OpenGL ES 2.0 (ANGLE)
+endif
 ifeq ($(TARGET_PLATFORM),PLATFORM_DRM)
     # On DRM OpenGL ES 2.0 must be used
     GRAPHICS = GRAPHICS_API_OPENGL_ES2
@@ -519,7 +527,7 @@ endif
 #------------------------------------------------------------------------------------------------
 LDFLAGS = $(CUSTOM_LDFLAGS) -L. -L$(RAYLIB_RELEASE_PATH)
 
-ifeq ($(TARGET_PLATFORM),$(filter $(TARGET_PLATFORM),PLATFORM_DESKTOP_GLFW PLATFORM_DESKTOP_SDL PLATFORM_DESKTOP_RGFW))
+ifeq ($(TARGET_PLATFORM),$(filter $(TARGET_PLATFORM),PLATFORM_DESKTOP_GLFW PLATFORM_DESKTOP_SDL PLATFORM_DESKTOP_RGFW PLATFORM_DESKTOP_WIN32))
     ifeq ($(PLATFORM_OS),WINDOWS)
         ifneq ($(CC), tcc)
             LDFLAGS += -Wl,--out-implib,$(RAYLIB_RELEASE_PATH)/lib$(RAYLIB_LIB_NAME)dll.a