Date: Wed, 18 Oct 2006 23:56:35 +0300 From: Giorgos Keramidas <keramida@freebsd.org> To: Nadow <el.nadow@gmail.com> Cc: freebsd-doc@freebsd.org Subject: Re: About compiling a new kernel steps Message-ID: <20061018205635.GB5665@gothmog.pc> In-Reply-To: <bf79ce230610120946v6d481630x47abbb0058557e6f@mail.gmail.com> References: <bf79ce230610120946v6d481630x47abbb0058557e6f@mail.gmail.com>
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On 2006-10-12 18:46, Nadow <el.nadow@gmail.com> wrote:
> Hi, in the handbook Chapter 8 Configuring the FreeBSD Kernel, part 8.3 it
> says
>
> 1. Run config(8) to generate the kernel source code.
>
> # /usr/sbin/config *MYKERNEL*
>
> 2. Change into the build directory. config(8) will print the name of
> this directory after being run as above.
>
> # cd ../compile/*MYKERNEL*
>
> For FreeBSD versions prior to 5.0, use the following form instead:
>
> # cd ../../compile/*MYKERNEL*
>
> 3. Compile the kernel.
>
> # make depend
> # make
>
> 4. Install the new kernel.
>
> # make install
>
> ------------------------------------
>
> But When I do
>
> # /usr/sbin/config *MYKERNEL
>
> The system reminds me to do "make clean depend" before "make depend"
> but in the third step of the handbook "make clean depend" doesnt
> appear. I know it works in both ways but I would like to know if it is
> not better to include the command just in case.
In general, choosing when to do a "make clean" and when not to do it,
requires a fair level of experience with the dependencies between
various kernel options.
If you are not severely limited by time, and can spare a few CPU cycles,
it's always much much safer to build a new kernel with the procedure
recommended in /usr/src/UPDATING:
# cd /usr/src
# make KERNCONF=FOO buildworld buildkernel
If you keep your /usr/obj tree around, even between multiple kernel-only
rebuilds, you can ommit the `buildworld' step, and run:
# cd /usr/src
# make KERNCONF=BAR buildkernel
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