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Date: Thu, 9 Jul 2015 01:00:11 -0400
From: Rich Felker <>
Subject: Re: [PATCH v9] Build process uses script to add CFI
 directives to x86 asm

On Wed, Jul 08, 2015 at 04:25:47PM +0200, Alex wrote:
> On Wed, Jul 8, 2015 at 4:16 PM, Rich Felker <> wrote:
> > A nasty complication: some of the .sub files sub-in a .c file instead
> > of a .s file. This is horribly nasty and probably not something I
> > should have done. x86 is not affected, but it probably means we should
> > not try applying the CFI stuff in the makefile to .sub rules yet.
> You are absolutely right about this. I will remove those Makefile rules. -- AD

In that case I think we can just use a variable for the command.
Hopefully by the time we need to support archs with sub file
controlled asm, changes to the build system will have eliminated the
whole sub file mess and we'll just multiple implicit rules in proper
precedence order to get the right files used. This should considerably
improve 'make' start latency too, which suffers a lot from the
function for sub file dependencies.


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