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SubjectRe: make cloneconfig ?
> Isn't "cloneconfig" basically just "zcat /proc/config.gz > .config &&
> make oldconfig" ???

yes (see below)

> If so, why do we need yet another "make
> <some_target>" Makefile rule? What would actually be gained?

ease of use and less confused users of suse-kernel based distro`s.
i have seen people giving hints for kernel compilation and telling "just do make cloneconfig" to non-suse users, just because they didn`t know, that this is suse specific.

ok, that`s not a real reason because you could argue that suse should drop it for more consistent end-user experience, but i think it`s much easier (and hassle free) to add it to mainline than drop it from suse.

roland


List: linux-kernel
Subject: [kbuild 3/5] Add cloneconfig target
From: Andreas Gruenbacher <agruen () suse ! de>
Date: 2005-01-18 18:41:23
Message-ID: 20050118192608.500213000.suse.de
[Download message RAW]

Cloneconfig takes the first configuration it finds which appears to
belong to the running kernel, and configures the kernel sources to match
this configuration as closely as possible.

Signed-off-by: Andreas Gruenbacher <agruen@suse.de>

Index: linux-2.6.11-rc1-bk6/scripts/kconfig/Makefile
===================================================================
--- linux-2.6.11-rc1-bk6.orig/scripts/kconfig/Makefile
+++ linux-2.6.11-rc1-bk6/scripts/kconfig/Makefile
@@ -37,6 +37,22 @@ allnoconfig: $(obj)/conf
allmodconfig: $(obj)/conf
$< -m arch/$(ARCH)/Kconfig

+UNAME_RELEASE := $(shell uname -r)
+CLONECONFIG := $(firstword $(wildcard /proc/config.gz \
+ /lib/modules/$(UNAME_RELEASE)/.config \
+ /etc/kernel-config \
+ /boot/config-$(UNAME_RELEASE)))
+cloneconfig: $(obj)/conf
+ $(Q)case "$(CLONECONFIG)" in \
+ '') echo -e "The configuration of the running" \
+ "kernel could not be determined\n"; \
+ false ;; \
+ *.gz) gzip -cd $(CLONECONFIG) > .config.running ;; \
+ *) cat $(CLONECONFIG) > .config.running ;; \
+ esac && \
+ echo -e "Cloning configuration file $(CLONECONFIG)\n"
+ $(Q)$< -D .config.running arch/$(ARCH)/Kconfig
+
defconfig: $(obj)/conf
ifeq ($(KBUILD_DEFCONFIG),)
$< -d arch/$(ARCH)/Kconfig
--
Andreas Gruenbacher <agruen@suse.de>
SUSE Labs, SUSE LINUX PRODUCTS GMBH



> -----Ursprüngliche Nachricht-----
> Von: "Jesper Juhl" <jesper.juhl@gmail.com>
> Gesendet: 24.04.08 00:43:56
> An: "devzero@web.de" <devzero@web.de>
> CC: linux-kernel@vger.kernel.org, agruen@suse.de
> Betreff: Re: make cloneconfig ?


> On 24/04/2008, devzero@web.de <devzero@web.de> wrote:
> > any reason why "make cloneconfig" never made it into mainline?
> >
> > many people are quite used to it and every time i build vanilla kernel i step into that trap "oh - that`s a suse`ism"
> >
> > make cloneconfig exists since /proc/config.gz - but while that one went into mainline, cloneconfig never did.
> >
> > anyone know the reason for that ?
> >
> > i wished, distros kernels were more similar to vanilla kernels - so what about making them more similar ?
> >
> >
>
> Isn't "cloneconfig" basically just "zcat /proc/config.gz > .config &&
> make oldconfig" ??? If so, why do we need yet another "make
> <some_target>" Makefile rule? What would actually be gained?
>
> --
> Jesper Juhl <jesper.juhl@gmail.com>
> Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
> Plain text mails only, please http://www.expita.com/nomime.html
>


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