A few #defines to reduce SDL2 footprint.

Only applied when library is statically linked

src/video/SDL_RLEaccel.c

@@ -445,7 +445,7 @@ RLEClipBlit(int w, Uint8 * srcbuf, SDL_Surface * surf_dst,
 
 
 /* blit a colorkeyed RLE surface */
-int SDLCALL
+static int SDLCALL
 SDL_RLEBlit(SDL_Surface * surf_src, SDL_Rect * srcrect,
             SDL_Surface * surf_dst, SDL_Rect * dstrect)
 {
@@ -723,7 +723,7 @@ RLEAlphaClipBlit(int w, Uint8 * srcbuf, SDL_Surface * surf_dst,
 }
 
 /* blit a pixel-alpha RLE surface */
-int SDLCALL
+static int SDLCALL
 SDL_RLEAlphaBlit(SDL_Surface * surf_src, SDL_Rect * srcrect,
                  SDL_Surface * surf_dst, SDL_Rect * dstrect)
 {

src/video/SDL_RLEaccel_c.h

@@ -27,10 +27,6 @@
 /* Useful functions and variables from SDL_RLEaccel.c */
 
 extern int SDL_RLESurface(SDL_Surface * surface);
-extern int SDLCALL SDL_RLEBlit     (SDL_Surface * src, SDL_Rect * srcrect,
-                                    SDL_Surface * dst, SDL_Rect * dstrect);
-extern int SDLCALL SDL_RLEAlphaBlit(SDL_Surface * src, SDL_Rect * srcrect,
-                                    SDL_Surface * dst, SDL_Rect * dstrect);
 extern void SDL_UnRLESurface(SDL_Surface * surface, int recode);
 
 #endif /* SDL_RLEaccel_c_h_ */

src/video/SDL_blit.c

@@ -202,22 +202,27 @@ SDL_CalculateBlit(SDL_Surface * surface)
         return SDL_SetError("Blit combination not supported");
     }
 
+#if SDL_HAVE_RLE
     /* Clean everything out to start */
     if ((surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
         SDL_UnRLESurface(surface, 1);
     }
+#endif
+
     map->blit = SDL_SoftBlit;
     map->info.src_fmt = surface->format;
     map->info.src_pitch = surface->pitch;
     map->info.dst_fmt = dst->format;
     map->info.dst_pitch = dst->pitch;
 
+#if SDL_HAVE_RLE
     /* See if we can do RLE acceleration */
     if (map->info.flags & SDL_COPY_RLE_DESIRED) {
         if (SDL_RLESurface(surface) == 0) {
             return 0;
         }
     }
+#endif
 
     /* Choose a standard blit function */
     if (map->identity && !(map->info.flags & ~SDL_COPY_RLE_DESIRED)) {
@@ -226,17 +231,30 @@ SDL_CalculateBlit(SDL_Surface * surface)
         /* Greater than 8 bits per channel not supported yet */
         SDL_InvalidateMap(map);
         return SDL_SetError("Blit combination not supported");
-    } else if (surface->format->BitsPerPixel < 8 &&
+    }
+#if SDL_HAVE_BLIT_0
+    else if (surface->format->BitsPerPixel < 8 &&
                SDL_ISPIXELFORMAT_INDEXED(surface->format->format)) {
         blit = SDL_CalculateBlit0(surface);
-    } else if (surface->format->BytesPerPixel == 1 &&
+    }
+#endif
+#if SDL_HAVE_BLIT_1
+    else if (surface->format->BytesPerPixel == 1 &&
                SDL_ISPIXELFORMAT_INDEXED(surface->format->format)) {
         blit = SDL_CalculateBlit1(surface);
-    } else if (map->info.flags & SDL_COPY_BLEND) {
+    }
+#endif
+#if SDL_HAVE_BLIT_A
+    else if (map->info.flags & SDL_COPY_BLEND) {
         blit = SDL_CalculateBlitA(surface);
-    } else {
+    }
+#endif
+#if SDL_HAVE_BLIT_N
+    else {
         blit = SDL_CalculateBlitN(surface);
     }
+#endif
+#if SDL_HAVE_BLIT_AUTO
     if (blit == NULL) {
         Uint32 src_format = surface->format->format;
         Uint32 dst_format = dst->format->format;
@@ -245,6 +263,8 @@ SDL_CalculateBlit(SDL_Surface * surface)
             SDL_ChooseBlitFunc(src_format, dst_format, map->info.flags,
                                SDL_GeneratedBlitFuncTable);
     }
+#endif
+
 #ifndef TEST_SLOW_BLIT
     if (blit == NULL)
 #endif

src/video/SDL_pixels.c

@@ -1003,9 +1003,11 @@ SDL_MapSurface(SDL_Surface * src, SDL_Surface * dst)
 
     /* Clear out any previous mapping */
     map = src->map;
+#if SDL_HAVE_RLE
     if ((src->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
         SDL_UnRLESurface(src, 1);
     }
+#endif
     SDL_InvalidateMap(map);
 
     /* Figure out what kind of mapping we're doing */

src/video/SDL_surface.c

@@ -905,11 +905,13 @@ int
 SDL_LockSurface(SDL_Surface * surface)
 {
     if (!surface->locked) {
+#if SDL_HAVE_RLE
         /* Perform the lock */
         if (surface->flags & SDL_RLEACCEL) {
             SDL_UnRLESurface(surface, 1);
             surface->flags |= SDL_RLEACCEL;     /* save accel'd state */
         }
+#endif
     }
 
     /* Increment the surface lock count, for recursive locks */
@@ -930,11 +932,13 @@ SDL_UnlockSurface(SDL_Surface * surface)
         return;
     }
 
+#if SDL_HAVE_RLE
     /* Update RLE encoded surface with new data */
     if ((surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
         surface->flags &= ~SDL_RLEACCEL;        /* stop lying */
         SDL_RLESurface(surface);
     }
+#endif
 }
 
 /*
@@ -1210,6 +1214,7 @@ int SDL_ConvertPixels(int width, int height,
         return SDL_InvalidParamError("dst_pitch");
     }
 
+#if SDL_HAVE_YUV
     if (SDL_ISPIXELFORMAT_FOURCC(src_format) && SDL_ISPIXELFORMAT_FOURCC(dst_format)) {
         return SDL_ConvertPixels_YUV_to_YUV(width, height, src_format, src, src_pitch, dst_format, dst, dst_pitch);
     } else if (SDL_ISPIXELFORMAT_FOURCC(src_format)) {
@@ -1217,6 +1222,12 @@ int SDL_ConvertPixels(int width, int height,
     } else if (SDL_ISPIXELFORMAT_FOURCC(dst_format)) {
         return SDL_ConvertPixels_RGB_to_YUV(width, height, src_format, src, src_pitch, dst_format, dst, dst_pitch);
     }
+#else
+    if (SDL_ISPIXELFORMAT_FOURCC(src_format) || SDL_ISPIXELFORMAT_FOURCC(dst_format)) {
+        SDL_SetError("SDL not built with YUV support");
+        return -1;
+    }
+#endif
 
     /* Fast path for same format copy */
     if (src_format == dst_format) {
@@ -1269,9 +1280,11 @@ SDL_FreeSurface(SDL_Surface * surface)
     while (surface->locked > 0) {
         SDL_UnlockSurface(surface);
     }
+#if SDL_HAVE_RLE
     if (surface->flags & SDL_RLEACCEL) {
         SDL_UnRLESurface(surface, 0);
     }
+#endif
     if (surface->format) {
         SDL_SetSurfacePalette(surface, NULL);
         SDL_FreeFormat(surface->format);