Quoting Philip Schuchardt <ohc@vt.edu>:
What video card do you have?
Intel Corporation Mobile 945GM/GMS/940GML Express Integrated Graphics Controller on a Dell Inspiron 620 laptop.
Now it compiles but I get this error upon trying to run it.
The program 'loch' received an X Window System error. This probably reflects a bug in the program. The error was 'GLXBadContext'. (Details: serial 24 error_code 155 request_code 143 minor_code 5) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.) loch$
Mike Lake