the webpage doesnt works, so only need to remove the "include netinet" from 3 files: advfs.cc, extract_compressed_fs.c, create_compressed_fs
strange, works for me here. Can you please post your full emerge info and attach a patch how you fixed it?
You can create a patch with "diff -u old new > patch"
Sorry, I cannot reproduce this problem, but get problems with your "fix", can you please attach your emerge info, the build output and tell me what version you are using?