#!/bin/sh
#
# $dotat: buildworld/common.sh,v 1.49 2002/07/25 10:24:04 fanf2 Exp $

# fatal errors
set -e

# use the installed utilities initially
PATH=/sbin:/bin:/usr/sbin:/usr/bin
export PATH

# be liberal with access controls
umask 002

# work out the date for adding to version strings and tags, etc.
DATE=`date +%Y%m%d`

# logging
PROG=${0##*/}
LOGFILE=${LOGFILE:-$SCRIPTS/logs/${PROG%.sh}.$DATE}

# overriding this might work, but I haven't tried it
[ -z "$SRC" ] && SRC=/usr/src

# get the real path of $SRC  (is this reliable?)
cd $SRC
SRC=`pwd -P`
# location of the build staging tree
OBJ=/usr/obj$SRC
# location of special-case programs for the later parts
# of building and all of inistalling
WEIRD=$OBJ/weirdbin
# location of new root files for comparison with old ones
ROOT=$OBJ/root

# get the path of the X source
[ -z "$XC" ] && XC=$SRC/../xc
cd $XC
XC=`pwd -P`

# work out names of kernel config files
if [ -d $SRC/sys/i386/conf ]
then
	cd $SRC/sys/i386/conf
	KERNCONF=`ls | egrep -v '^\.|CVS'`
else
	KERNCONF='GENERIC LINT'
fi

# ignore error returns
errok () {
	set +e
	eval ${1+"$@"}
	set -e
}

# print out a command then execute it
run () {
	echo "$@"
	"$@"
}

# some useful prettifiers

banner () {
	echo
	echo ==============================================================
	echo '>>>' $*
	echo ==============================================================
}

centre () {
	fmt -c 60 62 <<-END
	$*
	END
}

bigbanner () {
	echo
	echo '**************************************************************'
	echo '**************************************************************'
	echo
	centre $*
	echo
	echo '**************************************************************'
	echo '**************************************************************'
}

# add DIR to PATH if we can't find PROG
addpath () {
	local PROG DIR
	PROG=$1
	DIR=$2
	if [ -z "`which $PROG`" ]
	then
		PATH=$PATH:$DIR
	fi
}

# make a path which contains all the programs we need
# XXX: we are using possibly cross-compiled binaries!
goodpath () {
	local XBIN

	# location of the cross-compiler binaries
	XBIN=$OBJ/`uname -m`

	# create the path...

	PATH=$XBIN/usr/bin
	PATH=$PATH:$XBIN/usr/sbin
	PATH=$PATH:$XBIN/usr/games

	PATH=$PATH:$WEIRD

	addpath diff       $OBJ/gnu/usr.bin/diff
	addpath gzip       $OBJ/gnu/usr.bin/gzip

	addpath kbdcontrol $OBJ/usr.sbin/kbdcontrol
	addpath mtree      $OBJ/usr.sbin/mtree
	addpath pwd_mkdb   $OBJ/usr.sbin/pwd_mkdb

	addpath basename   $OBJ/usr.bin/basename
	addpath chflags    $OBJ/usr.bin/chflags
	addpath diff       $OBJ/usr.bin/diff
	addpath file2c     $OBJ/usr.bin/file2c
	addpath find       $OBJ/usr.bin/find
	addpath fmt        $OBJ/usr.bin/fmt
	addpath m4         $OBJ/usr.bin/m4
	addpath mail       $OBJ/usr.bin/mail
	addpath make       $OBJ/usr.bin/make
	addpath sed        $OBJ/usr.bin/sed
	addpath tee        $OBJ/usr.bin/tee
	addpath tr         $OBJ/usr.bin/tr
	addpath uname      $OBJ/usr.bin/uname

	addpath mount      $OBJ/sbin/mount

	addpath cat        $OBJ/bin/cat
	addpath chmod      $OBJ/bin/chmod
	addpath cp         $OBJ/bin/cp
	addpath date       $OBJ/bin/date
	addpath hostname   $OBJ/bin/hostname
	addpath ln         $OBJ/bin/ln
	addpath mkdir      $OBJ/bin/mkdir
	addpath mv         $OBJ/bin/mv
	addpath rm         $OBJ/bin/rm
	addpath sh         $OBJ/bin/sh
	addpath test       $OBJ/bin/test

	export PATH
	echo PATH=$PATH
}