Bob Lockie <address@hidden> writes:
Shouldn't the following give an error about an unknown option
"./configure --enable-debu=full"?
Actually this is explained in the Autoconf manual:
`configure' scripts do not complain about
`--enable-FEATURE' options that they do not support. This
behavior permits configuring a source tree containing
multiple packages with a top-level `configure' script when
the packages support different options, without spurious
error messages about options that some of the packages
support. An unfortunate side effect is that option spelling
errors are not diagnosed. No better approach to this problem
has been suggested so far.