From Mike Frysinger and/or Gentoo:

- libsdl-SDL_stretch-PIC.patch
ignoring the general fact of how SDL_stretch relies on executing dynamic code,
the inline asm should let gcc handle the a details for getting the actual
address for _copy_row as it will do the right thing
test case: http://dev.gentoo.org/~vapier/libsdl/sdl-stretch.tar.bz2

src/video/SDL_stretch.c

@@ -286,9 +286,9 @@ int SDL_SoftStretch(SDL_Surface *src, SDL_Rect *srcrect,
 		    default:
 #ifdef __GNUC__
 			__asm__ __volatile__ (
-			"call _copy_row"
+			"call *%4"
 			: "=&D" (u1), "=&S" (u2)
-			: "0" (dstp), "1" (srcp)
+			: "0" (dstp), "1" (srcp), "r" (&_copy_row)
 			: "memory" );
 #else
 #ifdef WIN32