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Re: Autom4te.cache


From: Bill Wendling
Subject: Re: Autom4te.cache
Date: Fri, 26 Jul 2002 12:32:23 -0500
User-agent: Mutt/1.4i

Also sprach Akim Demaille:
} 
} | Hi all,
} | So, I generated a configure file, kept the autom4te.cache directory
} | around, made a minor change to the configure.in file and this is the
} | resulting times I got:
} | 
} | [dangermouse hdf5_current] time autoconf
} | configure.in:233: warning: AC_CONFIG_SUBDIRS: you should use literals
} | 
} | real        0m30.977s
} | user        0m26.480s
} | sys 0m0.320s
} | [dangermouse hdf5_current] time autoconf
} | configure.in:233: warning: AC_CONFIG_SUBDIRS: you should use literals
} | 
} | real        0m31.118s
} | user        0m26.430s
} | sys 0m0.300s
} | 
} | So, why doesn't this give me a better time to autoconf the configure.in
} | if things are cached?
} 
} You said yourself you changed configure.ac, what did you expect???
} 
I added an inline comment...that was the change.

Then what exactly is the use of autom4te.cache? It gets generated with
autoconf, so one expects it to speed up autoconfing, right? Or is it only
to speed up autoheader?

} If you _need_ figures, then take these ones for instance:
} 
} ~/src/fileutils-4.1.5 % time ( rm -rf autom4te.cache; autoconf; rm -rf 
autom4te.cache; autoheader )           
} autoheader: `config.hin' is unchanged
} ( rm -rf autom4te.cache; autoconf; rm -rf autom4te.cache; autoheader )  
72,61s user 1,05s system 97% cpu 1:15,44 total
} ~/src/fileutils-4.1.5 % time ( rm -rf autom4te.cache; autoconf; autoheader )  
 
} autoheader: `config.hin' is unchanged                           
} ( rm -rf autom4te.cache; autoconf; autoheader )  38,10s user 0,51s system 97% 
cpu 39,470 total

-- 
|| Bill Wendling                        address@hidden
|| Coding Simian



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