From: George Anzinger <george@mvista.com>
To: Andrew Morton <akpm@osdl.org>
Cc: lkml <linux-kernel@vger.kernel.org>
Subject: Re: Build TAGS problem with O=
Date: Tue, 05 Jul 2005 19:51:03 -0700 [thread overview]
Message-ID: <42CB4717.4050609@mvista.com> (raw)
In-Reply-To: <42C5B967.6040908@mvista.com>
George Anzinger wrote:
> If you try:
> make O=/usr/src/ver/2.6.13-rc/obj/ -j5 LOCALVERSION=_2.6.13-rc TAGS
> ARCH=i386
>
> it fails with:
> MAKE TAGS
> find: security/selinux/include: No such file or directory
> find: include: No such file or directory
> find: include/asm-i386: No such file or directory
> find: include/asm-generic: No such file or directory
>
>
> The problem seems to be this bit of the topdir Makefile:
>
>
> #We want __srctree to totally vanish out when KBUILD_OUTPUT is not set
> #(which is the most common case IMHO) to avoid unneeded clutter in the
> big tags file.
> #Adding $(srctree) adds about 20M on i386 to the size of the output file!
>
> ifeq ($(KBUILD_OUTPUT),)
> __srctree =
> else
> __srctree = $(srctree)/
> endif
>
> It would appear that the "ifeq ($(KBUILD_OUTPUT),)" is doing the wrong
> thing. I am not a make expert, but I have had a lot of BAD experience
> trying to use this construct. Any one up to proposing a fix?
>
The problem appears to be that KBUILD_OUTPUT is NOT defined after make reruns
itself. Here is a fix:
Signed-off-by: George Anzinger <george@mvista.com>
--- /usr/src/linux-2.6.12-org/Makefile 2005-07-01 14:37:44.000000000 -0700
+++ /usr/src/linux-2.6.13-rc/Makefile 2005-07-05 19:45:00.588314304 -0700
@@ -1149,7 +1149,7 @@
#(which is the most common case IMHO) to avoid unneeded clutter in the big
tags file.
#Adding $(srctree) adds about 20M on i386 to the size of the output file!
-ifeq ($(KBUILD_OUTPUT),)
+ifeq ($(src),$(obj))
__srctree =
else
__srctree = $(srctree)/
--
George Anzinger george@mvista.com
HRT (High-res-timers): http://sourceforge.net/projects/high-res-timers/
next prev parent reply other threads:[~2005-07-06 5:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-01 21:45 Build TAGS problem with O= George Anzinger
2005-07-06 2:51 ` George Anzinger [this message]
2005-07-06 15:30 ` George Anzinger
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