svn commit: r213845 - head/sys/dev/aic7xxx/aicasm

[John Baldwin]

On Friday, October 15, 2010 2:50:46 pm Rui Paulo wrote:
> On 15 Oct 2010, at 13:45, John Baldwin wrote:
> 
> > On Thursday, October 14, 2010 5:09:58 pm Dimitry Andric wrote:
> >> On 2010-10-14 21:39, John Baldwin wrote:
> >>> On Thursday, October 14, 2010 3:19:19 pm Rui Paulo wrote:
> >> ...
> >>>>   Revert r213765. This is required because our build infrastructure uses
> >>>>   the host lex instead of the lex built during buildworld. I will MFC the
> >>>>   lex changes soon and in a few weeks this I'll commit again r213765.
> >>> Can't you make 'lex' a build-tool to workaround this?
> >> 
> >> That will not help for "cd conf/CONF && make kernel", apparently.  It
> >> will always use the host lex.
> > 
> > Well, yes, but that is always true.  build-tools are only used for
> > buildkernel.  However, if an 8.x lex cannot build a 9.x kernel, then having
> > lex be a build-tool (or cross-tool, ru@ knows which category better than I)
> > will let a 'make kernel-toolchain' followed by 'make buildkernel' of a 9.x
> > source tree work on an 8.x host.
> 
> Yes, but I was told that 'cd conf/CONF && make kernel' is a supported configuration (without requiring kernel-toolchain first).

Nah, just when it happens to work.  It's ok to require people to build a new
world to get a new lex in that case.  However, for the buildkernel case the
'buildworld' / 'toolchain' / 'kernel-toolchain' targets should always build
enough tools to let buildkernel work, so if a new lex is required they should
build a new lex.

-- 
John Baldwin