Thanks. I now know what CC means. However, adding the two lines to /sources.list /did not help. I have added all four lines from the advice of Tom H. and I still get *E: Package 'cmake' has no installation candidate.
*Let's keep trying. * *
Thanks. I now know what CC means. However, adding the two lines to /sources.list /did not help. I have added all four lines from the advice of Tom H. and I still get *E: Package 'cmake' has no installation candidate.
*Let's keep trying. * *