(C) Guido Draheim
SDL_stretch - Stretch Functions For SDL
In version 0.3.0 the assembly code generation for i386 was extended to support also x86_64 (amd64) with native code. However the support did require a little incompatibility as all 64bit unices are set on a non-executeable data (and heap) segment such that an allocation with memalign/mprotect must be used now.
Additionally the traditional code generation does also know about an interpreted mode for platforms that are not yet support by native machine code definitions. That should make build servers happy although it's not an optimal solution - it can not be as quite as fast as on-demand machine code.
Last not least, there is a new example program that is derived from the SDL parallax-2 demo (http://olofson.net/examples.html). The SOFTSTRETCH-ifdefs will guide you how to make your SDL window resizeable with the help of SDL_stretch. That demo program might also help with porting the software to other CPU types.