Do me a favor - create a folder in your computer, download this zip file that I'm attaching to the post, put it in that folder, uncompress and execute the script. Depending on your computer speed (slow probably being a ppc) it will take FOREVER but it may compile aMule with its libraries, if all goes well.
Disclaimer: If something doesn't go well, it may kill your dog or raise the dead from their graves, or delete everything on your computer. Again, I'm not personally responsible (neither is the aMule project) for anything it does.