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Re: Autoconf and a bare-metal host with no C library

From: Keith Marshall
Subject: Re: Autoconf and a bare-metal host with no C library
Date: Thu, 13 Oct 2016 15:48:04 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0

On 13/10/16 15:24, Russell Shaw wrote:
> On 13/10/16 13:11, Luca Saiu wrote:
> ...
> > So, what I'm asking you is: does a clean solution exist, or compiling
> > without a runtime library is just not supported by the Autotools?  It
> > sounds weird to say that for configuring you need a cross-compiler with
> > support for a runtime that will never even be linked when building.
> > Shouldn't there be, at least, one variant of AC_PROG_CC which doesn't
> > fail in a fatal way?
> >
> > I'm not yet linking the code in a public forum just because it still
> > lacks copyright and license headers; but in case it were useful to you,
> > even if I doubt it, I can clean it up and publish it.
> It can be messy and take quite some time to figure out what to do, but this 
> kind 
> of stuff is handled in the autoconf/automake/autogen build system of binutils 
> and gcc. Not a quick and easy path for the uninitiated though.

Or maybe, you could consider something along the lines of
MINGW_AC_PROG_CC_COMPILE_ONLY, (and associated support macros), as
included within this aclocal.m4:


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