#!/bin/bash

if [ -e /etc/make.conf ] ; then
	if [ -z "${CHOST}" ] ; then
		CHOST=$(source /etc/make.conf 2>/dev/null ; echo ${CHOST})
	fi
	if [ -z "${CFLAGS}" ] ; then
		CFLAGS=$(source /etc/make.conf 2>/dev/null ; echo ${CFLAGS})
	fi
fi
if [ -z "${CHOST}" ] ; then
	echo "Please set CHOST"
	exit 1
fi
if [ -z "${CFLAGS}" ] ; then
	echo "Please set CFLAGS"
	exit 1
fi
if [ -z "${ARCH}" ] ; then
	echo "Please set ARCH"
	exit 1
fi
[ -z "${MAKEOPTS}" ] && MAKEOPTS=${MAKEFLAGS}
export CHOST CFLAGS MAKEOPTS ARCH

PORTDIR=/usr/portage
DISTDIR=${PORTDIR}/distfiles
PORTAGE_TMPDIR=/var/tmp

PORTAGE_VER=2.1.2
PYTHON_VER=2.4.4

echo "Going to try to boostrap python / portage if needed."
echo "Python ${PYTHON_VER}"
echo "Portage ${PORTAGE_VER}"
echo
for v in CHOST CFLAGS ARCH MAKEOPTS PORTDIR DISTDIR PORTAGE_TMPDIR ; do
	echo "${v} = ${!v}"
done
echo
echo "Press return to continue or CTRL+C to abort ..."
read

mkdir -p "${DISTDIR}"

######################
# bootstrap python
######################
if [ ! -x /usr/bin/python ] ; then
PV=${PYTHON_VER}
A=Python-${PV}.tar.bz2

if [ ! -e "${DISTDIR}/${A}" ] ; then
	wget -P "${DISTDIR}" http://www.python.org/ftp/python/${PV%_*}/${A}
fi

export S="${PORTAGE_TMPDIR}/python-${PV}"
export PYTHON_DISABLE_MODULES="readline pyexpat dbm gdbm bsddb _curses _curses_panel _tkinter"
export PYTHON_DISABLE_SSL=1
export OPT="${CFLAGS}"

rm -rf ${S}
mkdir -p ${S}
cd ${S}
tar -jxf ${DISTDIR}/${A} || exit 1

S=${S}/Python-${PV}
cd ${S}

./configure \
	--enable-unicode=ucs4 \
	--prefix=/usr \
	--host=${CHOST} \
	--mandir=/usr/share/man \
	--infodir=/usr/share/info \
	--datadir=/usr/share \
	--sysconfdir=/etc \
	--localstatedir=/var/lib \
	--with-fpectl \
	--enable-shared \
	--disable-ipv6 \
	--infodir='${prefix}'/share/info \
	--mandir='${prefix}'/share/man \
	--with-threads \
	--with-cxx=no \
	|| exit 1
make ${MAKEOPTS} || exit 1
make altinstall || exit 1
cd /usr/bin
ln -s python${PV:0:3} python
fi

######################
# bootstrap portage
######################
if [ ! -x /usr/bin/emerge ] ; then
PV=${PORTAGE_VER}
A=portage-${PV}.tar.bz2

if [ ! -e ${DISTDIR}/${A} ] ; then
	wget -P ${DISTDIR} http://gentoo.osuosl.org/distfiles/${A}
fi

export S="${PORTAGE_TMPDIR}/portage-${PV}"

rm -rf ${S}
mkdir -p ${S}
cd ${S}
tar -jxf ${DISTDIR}/${A} || exit 1

S=${S}/portage-${PV}
cd ${S}

python -O -c "import compileall; compileall.compile_dir('${S}/pym')"

cd ${S}/src ; gcc ${CFLAGS} tbz2tool.c -o tbz2tool || exit 1
cd ${S}/cnf

cp make.conf etc-update.conf dispatch-conf.conf make.globals /etc/
patch /etc/make.conf make.conf.${ARCH}

mkdir -p /usr/lib/portage/pym
cd ${S}/pym
cp -r * ../bin/emergehelp.py /usr/lib/portage/pym/

mkdir -p /usr/lib/portage/bin
cd ${S}/bin
cp * ${S}/src/tbz2tool /usr/lib/portage/bin/
ln -s newins /usr/lib/portage/bin/donewins

for x in ebuild emerge portageq repoman tbz2tool xpak; do
	ln -s ../lib/portage/bin/${x} /usr/bin/${x}
done
for x in archive-conf dispatch-conf emaint emerge-webrsync \
         env-update etc-update fixpackages quickpkg regenworld
do
	ln -s ../lib/portage/bin/${x} /usr/sbin/${x}
done

mkdir -p /etc/portage
fi

######################
# setup misc configs
######################
grep -qs ^wheel: /etc/group    || echo "wheel::10:root" >> /etc/group
grep -qs ^portage: /etc/group  || echo "portage::250:portage" >> /etc/group
grep -qs ^portage: /etc/passwd || echo "portage:x:250:250:portage:/var/tmp/portage:/bin/false" >> /etc/passwd