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#!/bin/bash

# Generate the default environment file from a list of directories
# usage: genenv <basedir> <objdir> <target> <dir>...
# where <basedir> is the base directory for relative pathes in <dir>
# where <objdir> is the base directory for relative pathes for result
# and <target> is the resulting binary environment
objtree=$2
basedir=$1
target=$3
shift 3

tempdir="${target}.genenv.tmp"
tmpfile="$(mktemp)"

mkdir -p "$tempdir"

(cd $basedir
for i in $*; do
	if [ -d $i ]; then
		cp -r $i/* $tempdir
	else
		cp -a $i $tempdir
	fi
done
)

find $tempdir -name '.svn' -o -name '*~' -delete

$objtree/scripts/bareboxenv -s $tempdir ${tmpfile}

diff "${tmpfile}" "${target}" >/dev/null 2>/dev/null
if [ $? != 0 ]; then
	mv "${tmpfile}" "${target}"
else
	rm ${tmpfile}
fi

rm -r $tempdir