linux-kernel - Re: [PATCH 1/7] ARM: disallow combining XIP and LTO

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Message-ID: <nycvar.YSQ.7.76.1803121303350.28583@knanqh.ubzr>
Date:   Mon, 12 Mar 2018 13:05:31 -0400 (EDT)
From:   Nicolas Pitre <nicolas.pitre@...aro.org>
To:     Arnd Bergmann <arnd@...db.de>
cc:     Andi Kleen <ak@...ux.intel.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/7] ARM: disallow combining XIP and LTO

On Mon, 12 Mar 2018, Nicolas Pitre wrote:

> On Mon, 12 Mar 2018, Arnd Bergmann wrote:
> 
> > arm-linux-gnueabi-nm: 'arch/arm/boot/compressed/../../../../vmlinux':
> > No such file
> 
> That is weird. The Makefile has:
> 
> cmd_mkxip = $(cmd_objcopy) && $(cmd_deflate_xip_data)
> 
> $(obj)/xipImage: vmlinux FORCE
>         $(call if_changed,mkxip)
> 
> So the objcopy must succeed at producing vmlinux for deflate_xip_data 
> (where nm is used) to be called.

Correction: vmlinux is a dependency not a product, so it must be there 
for this rule to be executed, and it is input to both objcopy and nm.


Nicolas