The configure test for X11/Intrinsic.h fails with the above installed. I haven't a clue what's wrong; the file is right there where it belongs. I get X11 compilation variables: x_libraries = '/usr/X11R6/lib' x_includes = '/usr/X11R6/include' X_CFLAGS = ' -I/usr/X11R6/include' X_LIBS = ' -L/usr/X11R6/lib' X_PRE_LIBS = ' -lSM -lICE' X_EXTRA_LIBS = '' Defining BITMAPDIR = "/usr/X11R6/include/X11/bitmaps:/usr/X11R6/include/bitmaps" checking for X defines extracted by xmkmf Defining NARROWPROTO Defining linux Defining __i386__ Defining _POSIX_SOURCE Defining _XOPEN_SOURCE Defining _BSD_SOURCE Defining _SVID_SOURCE checking for X11/Intrinsic.h... no configure: error: Unable to find X11 header files. config.log says configure:5791: checking for X defines extracted by xmkmf configure:5823: checking for X11/Intrinsic.h configure:5831: gcc -E -I/usr/X11R6/include conftest.c >/dev/null 2>conft est.out In file included from configure:5826: confdefs.h:56: warning: `_XOPEN_SOURCE' redefined confdefs.h:14: warning: this is the location of the previous definition configure: failed program was: #line 5826 "configure" #include "confdefs.h" #include <X11/Intrinsic.h> if that helps. -- Michael D. Harnois, Redeemer Lutheran Church, Washburn, IA mdharnois(a)home.com aa0bt(a)aa0bt.ampr.org Physics is like sex: sure, it may give some practical results, but that's not why we do it. -- Richard Feynman