From: Mike Frysinger <vapier@gentoo.org>
Date: Thu, 13 Aug 2009 01:15:33 -0400
Subject: [U-Boot] [PATCH] Add support to mkconfig for setting simple
	#defines in config.h
In-Reply-To: <20090807192215.GA11689@b07421-ec1.am.freescale.net>
References: <1249653783-16727-1-git-send-email-galak@kernel.crashing.org>
	<20090807192215.GA11689@b07421-ec1.am.freescale.net>
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On Friday 07 August 2009 15:22:15 Scott Wood wrote:
> On Fri, Aug 07, 2009 at 09:03:03AM -0500, Kumar Gala wrote:
> >  while [ $# -gt 0 ] ; do
> >  	case "$1" in
> >  	--) shift ; break ;;
> >  	-a) shift ; APPEND=yes ;;
> >  	-n) shift ; BOARD_NAME="${1%%_config}" ; shift ;;
> > +	-D) shift ; DEFINES="#define ${1/=/\t}\n"${DEFINES} ; shift ;;
>
> How about something like:
>
> -D) shift ; DEFINES="${1//_/ } ${DEFINES}"; shift ;;

mkconfig's interpreter is /bin/sh, so if you want to use the string replace 
bashism, you'll have to change it to /bin/bash.  or use the POSIX:
"#define ${1%%=*}\t${1#*=}\n${DEFINES}"
-mike
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