On 9 December 2011 20:24, Christoffer Dall
<c.dall at virtualopensystems.com> wrote:
> Config files are named config.mk. This file is added to .gitignore,
> but a default config file is supplied in config-default.mk.
>
> The default config file creates kernel command boot lines for NFS boots
> based on a script obtaining the host IP addres. Naturally users can
> change this to a static IP or another script if they wish.
So I think it would be nice to automatically rebuild if the IP address
changes (or if the kernel command line changes for some other reason).
There are a couple of options here. We could be clever:
boot.o: $(BOOTLOADER) kcmd-value
[same rule as we have now to build boot.o]
kcmd-value: force
echo $(FOO) >kcmd-value.new
cmp kcmd-value kcmd-value.new || mv -f kcmd-value.new kcmd-value
but since in fact rebuilding boot.o takes almost no time and we already
spend plenty of time in the kernel's makefile if you do a "make" and there's
nothing to do, perhaps it would be simpler just to mark boot.o as "force"
so we always rebuild boot.o regardless ?
-- PMM
