#!/bin/sh
#
# This script must be executed with the following environment variables
# and arguments:
#
# export FROZEN_DIR=<place to write conf files>
# export DISTRO=<distro being frozen>
# unfreeze
#
# If not given or empty FROZEN_DIR defaults to the directory on BBPATH containing
# conf/local.conf.
#
# The output of the script consists of two files:
# 	$FROZEN_DIR/$DISTRO-bbfiles.conf
#	  empty
#
#	$FROZEN_DIR/$DISTRO-packages.conf
#	  empty
#
# Check the arguments.
test -n "$DISTRO" || {
	echo "FATAL: unfreeze: set \$DISTRO to the name of the distro to freeze" >&2
	exit 1
}
if test -n "$FROZEN_DIR" -a -d "$FROZEN_DIR"
then
	: # ok, given a directory
else
	if test -n "$BBPATH"
	then
		FROZEN_DIR=""
		for d in ${BBPATH//:/ }
		do
			if test -r "$d/conf/local.conf"
			then
				FROZEN_DIR="$d/conf"
				break
			elif test -z "$FROZEN_DIR" -a -d "$d"
			then
				# default to the first existing directory on
				# the path
				FROZEN_DIR="$d"
			fi
		done
	fi
	if test -n "$FROZEN_DIR"
	then
		echo "NOTE: unfreeze: \$FROZEN_DIR=\"$FROZEN_DIR\"" >&2
		echo "NOTE:           (defaulted from \$BBPATH=\"$BBPATH\")" >&2
	else
		echo "FATAL: unfreeze: set \$FROZEN_DIR to the directory for the new .conf files" >&2
		exit 1
	fi
fi
#
# do it
#
# the simple bb file list (package/bbfile.bb)
out="$FROZEN_DIR/$DISTRO-bbfiles.conf"
echo '# automatically generated by bitbake unfreeze' >"$out"
#
# the package directories list (package)
out="$FROZEN_DIR/$DISTRO-packages.conf"
echo '# automatically generated by bitbake unfreeze' >"$out"