From mboxrd@z Thu Jan  1 00:00:00 1970
From: Olaf Hering <olaf@aepfle.de>
Subject: Re: [PATCH] tools/configure: add options to pass
 EXTRA_CLFAGS
Date: Thu, 15 Mar 2012 14:46:36 +0100
Message-ID: <20120315134636.GA31539@aepfle.de>
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To: Jan Beulich <JBeulich@suse.com>
Cc: xen-devel <xen-devel@lists.xen.org>
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On Thu, Mar 15, Jan Beulich wrote:

> > This patch extends configure to recognize three environment variables
> > which will be written to config/Tools.mk so they will be reused with
> > each make invocation:
> >   EXTRA_CFLAGS_XEN_TOOLS= specifies CFLAGS for the tools build.
> >   EXTRA_CFLAGS_QEMU_TRADITIONAL= specifies CFLAGS for old qemu.
> >   EXTRA_CFLAGS_QEMU_XEN= specifies CFLAGS for new qemu.
> > The new feature can be used like this in a rpm xen.spec file:
> > 
> >    env \
> >    EXTRA_CFLAGS_XEN_TOOLS="${RPM_OPT_FLAGS}" \
> >    EXTRA_CFLAGS_QEMU_TRADITIONAL="${RPM_OPT_FLAGS}" \
> >    EXTRA_CFLAGS_QEMU_XEN="${RPM_OPT_FLAGS}" \
> >    ./configure \
> >    	--libdir=%{_libdir} \
> >    	--prefix=/usr
> >    make
> > 
> > To make sure the EXTRA_CFLAGS appear first in the command line
> 
> Wouldn't one rather want them to appear last (to eventually override
> other settings, namely the optimization level)?

If thats desired then the EXTRA_CFLAGS_XEN_TOOLS part is not needed,
APPEND_CFLAGS= could be used for that purpose. But this variable is not
yet handled as autoconf variable.

Olaf