You are not compiling the sis driver which compiles fine, you're compiling a fork of it based off extremely old SIS source that needs updating to support xserver 1.7 and is not supported at all in ubuntu.
** Changed in: xserver-xorg-video-sis (Ubuntu) Status: New => Won't Fix -- Impossible to compile the sis video driver in Lucid amd64 https://bugs.launchpad.net/bugs/572420 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs