Re: Build failures on kernel version changes

[David Young <dyoung%pobox.com@localhost>]

On Wed, Jan 11, 2012 at 07:30:31PM -0500, Julio Merino wrote:
> Hello,
> 
> I always run "update builds" of the tree (in a cron job, for that
> matter) and, whenever the kernel version changes, the build breaks
> as shown here:
> 
> Configuring in ./libiberty
> configure: loading cache ./config.cache
> configure: error: `build_alias' has changed since the previous run:
> configure:   former value:  `x86_64-unknown-netbsd5.99.55'
> configure:   current value: `x86_64-unknown-netbsd5.99.58'
> configure: error: `host_alias' has changed since the previous run:
> configure:   former value:  `x86_64-unknown-netbsd5.99.55'
> configure:   current value: `x86_64-unknown-netbsd5.99.58'
> configure: error: in `/home/builder/obj/usr/src/tools/gcc/build/intl':
> configure: error: changes in the environment can compromise the build
> configure: error: run `make distclean' and/or `rm ./config.cache'
> and start over
> configure: loading cache ./config.cache
> nbgmake: *** [configure-intl] Error 1
> nbgmake: *** Waiting for unfinished jobs....
> configure: error: `build_alias' has changed since the previous run:
> configure:   former value:  `x86_64-unknown-netbsd5.99.55'
> configure:   current value: `x86_64-unknown-netbsd5.99.58'
> configure: error: `host_alias' has changed since the previous run:
> configure:   former value:  `x86_64-unknown-netbsd5.99.55'
> configure:   current value: `x86_64-unknown-netbsd5.99.58'

Isn't this a fairly new failure mode, too?  That is, new in the last 2
or 3 years?

> Could we do something to automatically "workaround" this issue by,
> e.g. rebuilding all components that are affected by a kernel version
> change?

Are you asking for permission? :-)

Dave

-- 
David Young
dyoung%pobox.com@localhost    Urbana, IL    (217) 721-9981