making custom kernels easier to build

[Josh Boyer]

On Tue, Aug 12, 2014 at 1:34 PM, ottos <ottohaliburton at tx.rr.com> wrote:
>
>
>
>
> From: devel-bounces at lists.fedoraproject.org
> [mailto:devel-bounces at lists.fedoraproject.org] On Behalf Of Przemek
> Klosowski
> Sent: Tuesday, August 12, 2014 12:02 PM
> To: devel at lists.fedoraproject.org
>
>
> Subject: Re: making custom kernels easier to build
>
>
>
> On Tue, Aug 12, 2014 at 4:29 AM, ottos <ottohaliburton at tx.rr.com> wrote:
>
> Since this topic is here.  There is an error in Makefile when you do a make
> modules_install.  It attempts to delete a directory with a delete file
> command.  This occurs in two places.  If you are fixing fix this problem.
>
> Typically, something like that might happen if you are compiling in a
> pre-existing environment, where either an old compilation or someone
> manually created a directory with the same name as a file from the current
> compilation. Such error tends not to self-correct.  The kernel build system
> builds from scratch so it doesn't see the problem---I bet if you rm -rf the
> entire build tree before rebuilding it'll work for you as well.
>
> NB, when you report errors, please provide more context: what exactly are
> you comparing (version/release numbers, where you got them from) and what
> errors are you seeing (the exact copy of the error message); otherwise all
> others can offer is guesses.
>
>
>
> The following code is the defective code from Makefile.  The lines with the
> ** besides them is the lines in particular that are defective.
>
>
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> modules_install: _modinst_ _modinst_post
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>
>
> PHONY += _modinst_
>
> _modinst_:
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>         @rm -rf $(MODLIB)/kernel
>
>   **      @rm -f $(MODLIB)/source
>
>         @mkdir -p $(MODLIB)/kernel
>
>         @ln -s $(srctree) $(MODLIB)/source
>
>         @if [ ! $(objtree) -ef  $(MODLIB)/build ]; then \
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> **               rm -f $(MODLIB)/build ; \
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>                 ln -s $(objtree) $(MODLIB)/build ; \
>
>         fi
>
>
>
> if you execute a "make modules_install"   notice that you are trying delete
> a directive with a file delete.  I edit this file each time I build a custom
> kernel and put a "r" in front of the "f" making it -rf.  Is this enough.

$(MODLIB)/source and $(MODLIB)/build are symlinks.  It's removing the
link, not the directory.  If they aren't links on your machine then
something went wrong somewhere for you, but this is not a problem
Fedora or upstream has.

josh