# Copyright 1999-2004 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-apps/busybox/busybox-1.00_pre7.ebuild,v 1.2 2004/02/14 16:37:55 lu_zero Exp $

MY_PV=${PV/_/-}
MY_P=${PN}-${MY_PV}
S=${WORKDIR}/${MY_P}
DESCRIPTION="Utilities for rescue and embedded systems"
SRC_URI="http://www.busybox.net/downloads/${MY_P}.tar.gz"
HOMEPAGE="http://www.busybox.net"
SLOT="0"
LICENSE="GPL-2"
KEYWORDS="~x86 ~ppc"
IUSE="debug static uclibc savedconfig"

# Forward anticipation of expected supported arches would include ~x86
# ~alpha ~mips ~ppc ~sparc

DEPEND="virtual/glibc
	uclibc? ( dev-libs/uclibc )
"
RDEPEND="!static? ${DEPEND}"
# <pebenito> then eventually turning on selinux would mean
# adding a dep: selinux? ( sys-libs/libselinux )

busybox_config_option() {
	[ "$2" = "" ] && return 1
	case $1 in
		y) sed -i -e "s:.*CONFIG_$2.*set:CONFIG_$2=y:g" .config;;
		n) sed -i -e "s:CONFIG_$2=y:# CONFIG_$2 is not set:g" .config;;
		*) return 1;;
	esac
	einfo `grep CONFIG_$2 .config`
}

src_unpack() {
	unpack ${A}
	cd ${S}

	# check for a busybox config before making one of our own.
	# if one exist lets return and use it.
	# fine grained config control for user defined busybox configs.
	# [package]-[version]-[revision].config
	# [package]-[version].config
	# [package].config

	if use savedconfig; then
		[ -r .config ] && rm .config
		for conf in {${PN}-${PV}-${PR},${PN}-${PV},${PN}}.config; do
			if [ -r /etc/${PN}/${CCHOST}/${conf} ]; then
				cp /etc/${PN}/${CCHOST}/${conf} ${S}/.config
				break;
			fi
		done
		if [ -r "${S}/.config" ]; then
			einfo "Found your /etc/${PN}/${CCHOST}/${conf} and using it."
			return 0
		fi
	fi

	# busybox has changed quite a bit from 0.[5-6]* to 1.x so this
	# config might not be cd ready.

	make allyesconfig > /dev/null
	busybox_config_option n DMALLOC
	busybox_config_option n FEATURE_SUID

	# setting the cross compiler from here would be somewhat of a
	# pain do to as we would need a multiline sed expression which
	# does not always seem to work so hot for me.

	[ `use static` ] && busybox_config_option y STATIC ||
		busybox_config_option n STATIC

	# 1.00-pre2 uses the old selinux api which is no longer
	# maintained. perhaps the next stable release will include
	# support. 
	# 1.00-pre5  pebenito says busybox is still using the old se api.
	#[ `use selinux` ] && busybox_config_option y SELINUX ||
		busybox_config_option n SELINUX

	[ `use debug` ] && busybox_config_option y DEBUG ||
		busybox_config_option n DEBUG

	# Supported architectures:

	# Busybox in general will build on any architecture supported by
	# gcc.  It has a few specialized features added for __sparc__
	# and __alpha__.  insmod functionality is currently limited to
	# x86, ARM, SH3/4, powerpc, m68k, MIPS, and v850e.

	case ${ARCH} in
		alpha|sparc*)
			# non x86 needs to figure out what works for
			# them the best. sparc64 bobmed while building
			# ash in my tests
			busybox_config_option n INSMOD
			busybox_config_option n MODPROBE
			busybox_config_option n RMMOD;;
		*) ;;
	esac

	#busybox_features=`grep CONFIG_ .config | tr '#' '\n' | 
	#	awk  '{print $1}' | cut -d = -f 1 | grep -v ^$ | cut -c 8- | 
	#		tr [A-Z] [a-z] | awk '{print "busybox_"$1}'`
	#for f in $busybox_features; do
	#	has $f ${FEATURES} && busybox_config_option y `echo ${f/busybox_/}|tr [a-z] [A-Z]`
	#done
	echo | make clean oldconfig > /dev/null
}

src_compile() {
	if use uclibc; then
		case ${ARCH} in
			x86*) CROSS="/usr/i386-linux-uclibc/bin/i386-uclibc-";;
			*) ;;
		esac
	fi
	[ -n "${CROSS}" ] && einfo "Setting cross compiler prefix to ${CROSS}"
	# MAKEOPTS="-j1" emake CROSS="${CROSS}" include/config.h busybox || die
	MAKEOPTS="-j1" emake CROSS="${CROSS}" busybox || die
}

src_install() {
	into /
	dobin busybox

	into /usr
	dodoc AUTHORS Changelog LICENSE README TODO

	cd docs || die
	docinto txt
	dodoc *.txt
	docinto pod
	dodoc *.pod
	dohtml *.html
	dohtml *.sgml

	# no man files?
	# cd ../man && doman *.1

	cd ../examples || die
	docinto examples
	dodoc inittab
	dodoc depmod.pl

	cd bootfloppy || die
	docinto bootfloppy
	for f in bootfloppy.txt display.txt mkdevs.sh etc/* etc/init.d/* ; do
		[ -f ${f} ] && dodoc ${f}
	done

	cd ../../ || die

	if [ `has buildpkg ${FEATURES}` -a `has keepwork ${FEATURES}` ]; then
		cd ${S}
		# this should install to the ./_install/ dir by default.
		# we make a micro pkg of busybox that can be used for
		# embedded systems -solar
		make install && cd ./_install/ &&
			tar --no-same-owner -jcvf \
				${WORKDIR}/${MY_P}-${ARCH}.bz2 . && cd ..
	fi

	if use savedconfig; then
		einfo "Saving this build config to /etc/${PN}/${CCHOST}/${PN}-${PV}-${PR}.config"
		einfo "Read this ebuild for more info on how to take advantage of this option"
		mkdir -p ${D}/etc/${PN}/${CCHOST}/
		cp ${S}/.config ${D}/etc/${PN}/${CCHOST}/${PN}-${PV}-${PR}.config
	fi
}

pkg_postinst() {
	echo
	einfo "This ebuild has support for user defined configs"
	einfo "Please read this ebuild for more details and re-emerge as needed"
	einfo "if you want to add or remove functionality for ${PN}"
	echo
}