/[autoconf]/autoconf/doc/autoconf.texi
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revision 1.666 by akim, Fri Sep 6 09:03:54 2002 UTC revision 1.667 by akim, Fri Sep 6 11:10:37 2002 UTC
# Line 6219  Being precious means that Line 6219  Being precious means that
6219  @var{variable} is @code{AC_SUBST}'d.  @var{variable} is @code{AC_SUBST}'d.
6220    
6221  @item  @item
6222  @var{variable} is kept in the cache including if it was not specified on  The value of @var{variable} when @command{configure} was launched is
6223  the @samp{./configure} command line.  Indeed, while @command{configure}  saved in the cache, including if it was not specified on the command
6224  can notice the definition of @code{CC} in @samp{./configure  line but via the environment.  Indeed, while @command{configure} can
6225  CC=bizarre-cc}, it is impossible to notice it in @samp{CC=bizarre-cc  notice the definition of @code{CC} in @samp{./configure CC=bizarre-cc},
6226  ./configure}, which, unfortunately, is what most users do.  it is impossible to notice it in @samp{CC=bizarre-cc ./configure},
6227    which, unfortunately, is what most users do.
6228    
6229    We emphasize that it is the @emph{initial} value of @var{variable} which
6230    is saved, not that found during the execution of @command{configure}.
6231    Indeed, specifying @samp{./configure FOO=foo} and letting
6232    @samp{./configure} guess that @code{FOO} is @code{foo} can be two very
6233    different runs.
6234    
6235  @item  @item
6236  @var{variable} is checked for consistency between two  @var{variable} is checked for consistency between two

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