linux-kernel - Re: Btrfs v0.14 Released

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Date:	Fri, 2 May 2008 16:31:23 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...ozas.de>
To:	jeffschroeder@...puter.org
cc:	Chris Mason <chris.mason@...cle.com>,
	Jeff Mahoney <jeffm@...e.com>,
	Tim Gardner <tim.gardner@...onical.com>,
	linux-fsdevel@...r.kernel.org, kernel-team@...ts.ubuntu.com,
	linux-kernel@...r.kernel.org, linux-btrfs@...r.kernel.org,
	John Johansen <jjohansen@...e.de>
Subject: Re: Btrfs v0.14 Released


On Friday 2008-05-02 16:15, Jeff Schroeder wrote:
>
>Make is not my forte, but here is a working test to see if apparmor
>exists in Ubuntu 8.04.
>Maybe have make apply a patch to the btrfs source if this test
>succeeds? Does this work in SUSE?
>
>http://www.digitalprognosis.com/opensource/patches/btrfs/lame_apparmor_test_for_btrfs.patch

Woah, you rely on autoconf.h. Uh no thanks, let the build system handle it.

# -*- Makefile -*-

btrfs-objs := ...
obj-m += btrfs.o and-so-on.o

ifneq (${CONFIG_SECURITY_APPARMOR},)
EXTRA_CFLAGS += -DI_HAZ_AN_APPARMOR
endif

all:
	${MAKE} -C ${kdir} M=$PWD all;


Best of all, you can override that from the command line too...

	make CONFIG_SECURITY_APPARMOR=y

(and if you don't, it takes its value from the appropriate .config,
all without you having to care about autoconf.h)
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