checking for shmat... yes
checking for IceConnectionNumber in -lICE... yes
checking X11/extensions/scrnsaver.h usability... yes
checking X11/extensions/scrnsaver.h presence... yes
checking for X11/extensions/scrnsaver.h... yes
checking for XScreenSaverQueryExtension in -lXss... no
configure: error: XScreenSaver extension is required - X11/extensions/scnsaver.h, libXss.so
adam@desktop:~/mugshot-1.1.42$