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Re: Build failures on kernel version changes
On Sun, Jan 15, 2012 at 03:06:45PM +0100, Nicolas Joly wrote:
> > > Except that both gcc and binutils explicitely disallow passing user
> > > specified cache file to subconfigures, except for special value
> > > /dev/null (which is the default for top-level configure and disable
> > > caching).
> > Gah!
> > So let's just check for it and remove all config.cache files when it
> > happens.
> Do you want to remove all caches when configure is rerun (for whatever
> reason) ? Or only for os version bump ?
> In the former case, it makes the cache files useless; they are only
> used when configure is rerun. As for the latter, how do we easily
> detect that cache files were generated from an different version ?
Aren't they also used during configure? A lot of configure scripts do
inane things like
Checking for socket -lsocket... no
Checking for socket in -lsocket... (cached) no
although I don't know if gcc and binutils do.
(also, is there a reason they block user-specified cache files? if
not, can that be altered easily?)
David A. Holland
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