Hi, Last night, Mike & I also tried to compile argyll from the jam-based archive (to see if the X problem he has comes from the autotools-based version) but without success. The problem comes from the /usr/X11R6/lib/xxx.a libraries, which do not exist. Dont't know if it is a debian or a Xorg issue, but these files are now in /usr/lib/. I added the following symbolic links: /usr/X11R6/lib/libX11.a -> /usr/lib/libX11.a /usr/X11R6/lib/libXext.a -> /usr/lib/libXext.a /usr/X11R6/lib/libXinerama.a -> /usr/lib/libXinerama.a /usr/X11R6/lib/libXxf86vm.a -> /usr/lib/libXxf86vm.a but then, I get the following errors: Link pathplot /usr/X11R6/lib/libX11.a(ConnDis.o): In function `_X11TransConnectDisplay': (.text+0xaad): undefined reference to `XauDisposeAuth' /usr/X11R6/lib/libX11.a(ConnDis.o): In function `_X11TransConnectDisplay': (.text+0xcbf): undefined reference to `XauGetBestAuthByAddr' /usr/X11R6/lib/libX11.a(ConnDis.o): In function `_X11TransConnectDisplay': (.text+0xee2): undefined reference to `XdmcpWrap' /usr/X11R6/lib/libX11.a(XlcDL.o): In function `open_object': (.text+0x1d2): undefined reference to `dlopen' /usr/X11R6/lib/libX11.a(XlcDL.o): In function `fetch_symbol': (.text+0x280): undefined reference to `dlsym' /usr/X11R6/lib/libX11.a(XlcDL.o): In function `fetch_symbol': (.text+0x2db): undefined reference to `dlsym' /usr/X11R6/lib/libX11.a(XlcDL.o): In function `close_object': (.text+0x31b): undefined reference to `dlclose' collect2: ld returned 1 exit status cc -DUNIX -o pathplot pathplot.o ../icc/libicc.a ../xicc/libxicc.a ../gamut/libgamut.a ../gamut/libgammap.a ../rspl/librspl.a ../cgats/libcgats.a ../numlib/libnum.a ../plot/libplot.a /usr/X11R6/lib/libX11.a -lm ...failed Link pathplot ... If I add '-lXau -lXdmcp -ldl' to the LINKLIBS var, line 269 in the Jambase file : LINKLIBS default = -lm -lXau -lXdmcp -ldl ; then, it compile. Why these libs are missing ? PS: Mike, can you try to added these libes, and then compile with jam to see if your X problem persists? -- Frédéric http://www.gbiloba.org