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Disable caching by default, so as not to cause problems when
newbies accidentally use a stale cache file. * acgeneral.m4 (_AC_INIT_PARSE_ARGS): Set cache_file to /dev/null to disable caching by default. (_AC_INIT_HELP): Adjust the --help message. (AC_CACHE_LOAD, AC_CACHE_SAVE): Don't print "loading/updating /dev/null" messages. * autoconf.texi: Note that caching is disabled, how to enable it, and that `./config.cache' is the traditional name of the cache file. * install.texi: Likewise.
This commit is contained in:
Akim Demaille
parent
f1e4ffce26
commit
5ae14bc8c0
14
ChangeLog
14
ChangeLog
@ -1,3 +1,17 @@
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2000-04-05 Steven G. Johnson <stevenj@alum.mit.edu>
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Disable caching by default, so as not to cause problems when
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newbies accidentally use a stale cache file.
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* acgeneral.m4 (_AC_INIT_PARSE_ARGS): Set cache_file to /dev/null
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to disable caching by default.
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(_AC_INIT_HELP): Adjust the --help message.
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(AC_CACHE_LOAD, AC_CACHE_SAVE): Don't print "loading/updating
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/dev/null" messages.
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* autoconf.texi: Note that caching is disabled, how to enable it,
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and that `./config.cache' is the traditional name of the cache file.
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* install.texi: Likewise.
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2000-04-03 Akim Demaille <akim@epita.fr>
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* acgeneral.m4 (_AC_INIT_PARSE_ARGS): If any option waiting for a
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@ -894,7 +894,7 @@ ac_init_version=false
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# The variables have the same names as the options, with
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# dashes changed to underlines.
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build=NONE
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cache_file=./config.cache
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cache_file=/dev/null
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AC_SUBST(exec_prefix, NONE)dnl
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host=NONE
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no_create=
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@ -1274,7 +1274,7 @@ Configuration:
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-h, --help print this message
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-V, --version print the version of autoconf that created configure
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-q, --quiet, --silent do not print `checking...' messages
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--cache-file=FILE cache test results in FILE
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--cache-file=FILE cache test results in FILE [disabled]
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-n, --no-create do not create output files
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EOF
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@ -1878,7 +1878,7 @@ done
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# -------------
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define(AC_CACHE_LOAD,
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[if test -r "$cache_file"; then
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echo "loading cache $cache_file"
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test "x$cache_file" != "x/dev/null" && echo "loading cache $cache_file"
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dnl Some versions of bash will fail to source /dev/null, so we
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dnl avoid doing that.
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test -f "$cache_file" && . $cache_file
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@ -1931,7 +1931,7 @@ EOF
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esac >>confcache
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if cmp -s $cache_file confcache; then :; else
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if test -w $cache_file; then
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echo "updating cache $cache_file"
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test "x$cache_file" != "x/dev/null" && echo "updating cache $cache_file"
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cat confcache >$cache_file
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else
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echo "not updating unwritable cache $cache_file"
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8
configure
vendored
8
configure
vendored
@ -62,7 +62,7 @@ ac_init_version=false
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# The variables have the same names as the options, with
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# dashes changed to underlines.
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build=NONE
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cache_file=./config.cache
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cache_file=/dev/null
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exec_prefix=NONE
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host=NONE
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no_create=
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@ -449,7 +449,7 @@ Configuration:
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-h, --help print this message
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-V, --version print the version of autoconf that created configure
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-q, --quiet, --silent do not print `checking...' messages
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--cache-file=FILE cache test results in FILE
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--cache-file=FILE cache test results in FILE [disabled]
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-n, --no-create do not create output files
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EOF
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@ -624,7 +624,7 @@ for ac_site_file in $CONFIG_SITE; do
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done
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if test -r "$cache_file"; then
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echo "loading cache $cache_file"
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test "x$cache_file" != "x/dev/null" && echo "loading cache $cache_file"
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test -f "$cache_file" && . $cache_file
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else
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echo "creating cache $cache_file"
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@ -1167,7 +1167,7 @@ EOF
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esac >>confcache
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if cmp -s $cache_file confcache; then :; else
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if test -w $cache_file; then
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echo "updating cache $cache_file"
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test "x$cache_file" != "x/dev/null" && echo "updating cache $cache_file"
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cat confcache >$cache_file
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else
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echo "not updating unwritable cache $cache_file"
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@ -453,8 +453,9 @@ a shell script called @file{config.status} that, when run, will recreate
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the files listed above (@pxref{Invoking config.status});
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@item
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a shell script called @file{config.cache} that saves the results of
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running many of the tests (@pxref{Cache Files});
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an optional shell script normally called called @file{config.cache}
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(created when using @samp{configure --cache-file=./config.cache}) that
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saves the results of running many of the tests (@pxref{Cache Files});
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@item
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a file called @file{config.log} containing any messages produced by
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@ -500,7 +501,7 @@ Makefile.in -------------------------------> Makefile.in
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Files used in configuring a software package:
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@example
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@group
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.-------------> config.cache
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.-------------> [config.cache]
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configure* ------------+-------------> config.log
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[config.h.in] -. v .-> [config.h] -.
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@ -4969,17 +4970,21 @@ tests run on one system so they can be shared between configure scripts
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and configure runs. It is not useful on other systems. If its contents
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are invalid for some reason, the user may delete or edit it.
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By default, configure uses @file{./config.cache} as the cache file,
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creating it if it does not exist already. @code{configure} accepts the
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@samp{--cache-file=@var{file}} option to use a different cache file;
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that is what @code{configure} does when it calls @code{configure}
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scripts in subdirectories, so they share the cache.
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By default, configure uses no cache file (technically, it uses
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@samp{--cache-file=/dev/null}), so as to forestall problems caused by
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accidental use of stale cache files.
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To enable caching, @code{configure} accepts the optional argument
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@samp{--cache-file=@var{file}} where @var{file} is the name of the cache
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file to use, traditionally @file{./config.cache}. The cache file is
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created if it does not exist already. When @code{configure} calls
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@code{configure} scripts in subdirectories, it uses the
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@samp{--cache-file} argument so that they share the same cache.
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@xref{Subdirectories}, for information on configuring subdirectories
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with the @code{AC_CONFIG_SUBDIRS} macro.
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Giving @samp{--cache-file=/dev/null} disables caching, for debugging
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@code{configure}. @file{config.status} only pays attention to the cache
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file if it is given the @samp{--recheck} option, which makes it rerun
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@file{config.status} only pays attention to the cache file if it is
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given the @samp{--recheck} option, which makes it rerun
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@code{configure}. If you are anticipating a long debugging period, you
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can also disable cache loading and saving for a @code{configure} script
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by redefining the cache macros at the start of @file{configure.in}:
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@ -6330,7 +6335,7 @@ test "$localstatedir" = '$@{prefix@}/var' && localstatedir=/var
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#
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# Give Autoconf 2.x generated configure scripts a shared default
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# cache file for feature test results, architecture-specific.
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if test "$cache_file" = ./config.cache; then
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if test "$cache_file" = /dev/null; then
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cache_file="$prefix/var/config.cache"
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# A cache file is only valid for one C compiler.
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CC=gcc
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@ -12,17 +12,20 @@ those values to create a @file{Makefile} in each directory of the
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package. It may also create one or more @file{.h} files containing
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system-dependent definitions. Finally, it creates a shell script
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@file{config.status} that you can run in the future to recreate the
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current configuration, a file @file{config.cache} that saves the results
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of its tests to speed up reconfiguring, and a file @file{config.log}
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containing compiler output (useful mainly for debugging
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@code{configure}).
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current configuration, and a file @file{config.log} containing compiler
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output (useful mainly for debugging @code{configure}).
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It can also use an optional file (typically called @file{config.cache}
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and enabled with @samp{--cache-file=./config.cache}) that saves the
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results of its tests to speed up reconfiguring. (Caching is disabled by
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default to prevent problems with accidental use of stale cache files.)
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If you need to do unusual things to compile the package, please try to
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figure out how @code{configure} could check whether to do them, and mail
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diffs or instructions to the address given in the @file{README} so they
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can be considered for the next release. If at some point
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@file{config.cache} contains results you don't want to keep, you may
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remove or edit it.
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can be considered for the next release. If you are using the cache, and
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at some point @file{config.cache} contains results you don't want to
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keep, you may remove or edit it.
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The file @file{configure.in} is used to create @file{configure} by a
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program called @code{autoconf}. You only need @file{configure.in} if
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@ -225,10 +228,10 @@ Print the version of Autoconf used to generate the @code{configure}
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script, and exit.
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@item --cache-file=@var{file}
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@cindex Cache, disabling
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Use and save the results of the tests in @var{file} instead of
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@file{./config.cache}. Set @var{file} to @file{/dev/null} to disable
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caching, for debugging @code{configure}.
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@cindex Cache, enabling
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Enable the cache: use and save the results of the tests in @var{file},
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traditionally @file{./config.cache}. @var{file} defaults to
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@file{/dev/null} to disable caching.
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@item --quiet
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@itemx --silent
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@ -894,7 +894,7 @@ ac_init_version=false
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# The variables have the same names as the options, with
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# dashes changed to underlines.
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build=NONE
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cache_file=./config.cache
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cache_file=/dev/null
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AC_SUBST(exec_prefix, NONE)dnl
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host=NONE
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no_create=
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@ -1274,7 +1274,7 @@ Configuration:
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-h, --help print this message
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-V, --version print the version of autoconf that created configure
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-q, --quiet, --silent do not print `checking...' messages
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--cache-file=FILE cache test results in FILE
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--cache-file=FILE cache test results in FILE [disabled]
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-n, --no-create do not create output files
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EOF
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@ -1878,7 +1878,7 @@ done
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# -------------
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define(AC_CACHE_LOAD,
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[if test -r "$cache_file"; then
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echo "loading cache $cache_file"
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test "x$cache_file" != "x/dev/null" && echo "loading cache $cache_file"
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dnl Some versions of bash will fail to source /dev/null, so we
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dnl avoid doing that.
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test -f "$cache_file" && . $cache_file
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@ -1931,7 +1931,7 @@ EOF
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esac >>confcache
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if cmp -s $cache_file confcache; then :; else
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if test -w $cache_file; then
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echo "updating cache $cache_file"
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test "x$cache_file" != "x/dev/null" && echo "updating cache $cache_file"
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cat confcache >$cache_file
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else
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echo "not updating unwritable cache $cache_file"
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