Patch from Sylvain to fix clang warnings

src/render/opengl/SDL_shaders_gl.h

@@ -34,7 +34,7 @@ typedef enum {
 
 typedef struct GL_ShaderContext GL_ShaderContext;
 
-extern GL_ShaderContext * GL_CreateShaderContext();
+extern GL_ShaderContext * GL_CreateShaderContext(void);
 extern void GL_SelectShader(GL_ShaderContext *ctx, GL_Shader shader);
 extern void GL_DestroyShaderContext(GL_ShaderContext *ctx);
 

src/render/opengles/SDL_render_gles.c

@@ -214,7 +214,7 @@ static int GLES_LoadFunctions(GLES_RenderData * data)
 
 static SDL_GLContext SDL_CurrentContext = NULL;
 
-GLES_FBOList *
+static GLES_FBOList *
 GLES_GetFBO(GLES_RenderData *data, Uint32 w, Uint32 h)
 {
    GLES_FBOList *result = data->framebuffers;

src/render/opengles2/SDL_render_gles2.c

@@ -307,7 +307,7 @@ static int GLES2_LoadFunctions(GLES2_DriverContext * data)
     return 0;
 }
 
-GLES2_FBOList *
+static GLES2_FBOList *
 GLES2_GetFBO(GLES2_DriverContext *data, Uint32 w, Uint32 h)
 {
    GLES2_FBOList *result = data->framebuffers;
@@ -1923,7 +1923,9 @@ static int GLES2_UnbindTexture (SDL_Renderer * renderer, SDL_Texture *texture)
  * Renderer instantiation                                                                        *
  *************************************************************************************************/
 
+#ifdef ZUNE_HD
 #define GL_NVIDIA_PLATFORM_BINARY_NV 0x890B
+#endif
 
 static void
 GLES2_ResetState(SDL_Renderer *renderer)
@@ -1963,7 +1965,7 @@ GLES2_CreateRenderer(SDL_Window *window, Uint32 flags)
 #ifndef ZUNE_HD
     GLboolean hasCompiler;
 #endif
-    Uint32 window_flags;
+    Uint32 window_flags = 0; /* -Wconditional-uninitialized */
     GLint window_framebuffer;
     GLint value;
     int profile_mask = 0, major = 0, minor = 0;

src/render/software/SDL_blendfillrect.c

@@ -245,7 +245,7 @@ SDL_BlendFillRect(SDL_Surface * dst, const SDL_Rect * rect,
             } else {
                 return SDL_BlendFillRect_ARGB8888(dst, rect, blendMode, r, g, b, a);
             }
-            break;
+            /* break; -Wunreachable-code-break */
         }
         break;
     default:

src/render/software/SDL_blendline.c

@@ -685,7 +685,7 @@ SDL_CalculateBlendLineFunc(const SDL_PixelFormat * fmt)
         } else {
             return SDL_BlendLine_RGB2;
         }
-        break;
+        /* break; -Wunreachable-code-break */
     case 4:
         if (fmt->Rmask == 0x00FF0000) {
             if (fmt->Amask) {

src/render/software/SDL_blendpoint.c

@@ -235,13 +235,11 @@ SDL_BlendPoint(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r
         switch (dst->format->Rmask) {
         case 0x00FF0000:
             if (!dst->format->Amask) {
-                return SDL_BlendPoint_RGB888(dst, x, y, blendMode, r, g, b,
-                                             a);
+                return SDL_BlendPoint_RGB888(dst, x, y, blendMode, r, g, b, a);
             } else {
-                return SDL_BlendPoint_ARGB8888(dst, x, y, blendMode, r, g, b,
-                                               a);
+                return SDL_BlendPoint_ARGB8888(dst, x, y, blendMode, r, g, b, a);
             }
-            break;
+            /* break; -Wunreachable-code-break */
         }
         break;
     default:

src/render/software/SDL_rotate.c

@@ -79,7 +79,7 @@ to a situation where the program can segfault.
 /* !
 \brief Lower limit of absolute zoom factor or rotation degrees.
 */
-#define VALUE_LIMIT 0.001
+/* #define VALUE_LIMIT 0.001 */
 
 /* !
 \brief Returns colorkey info for a surface