#!/bin/sh

# abuild - build apk packages (light version of makepkg)
# Copyright (c) 2008 Natanael Copa <natanael.copa@gmail.com>
#
# Distributed under GPL-2
#

program_version=@VERSION@
sysconfdir=@sysconfdir@
abuildrepo_base=@abuildrepo@
datadir=@datadir@

abuild_path=$(readlink -f $0)

if ! [ -f "$datadir/functions.sh" ]; then
	echo "$datadir/functions.sh: not found" >&2
	exit 1
fi
. "$datadir/functions.sh"

# defaults
BUILD_BASE="build-base"

: ${FAKEROOT:="fakeroot"}
: ${SUDO_APK:="abuild-apk"}
: ${APK:="apk"}
: ${ADDUSER:="abuild-adduser"}
: ${ADDGROUP:="abuild-addgroup"}

apk_opt_wait="--wait 30"

# run optional log command for remote logging
logcmd() {
	${ABUILD_LOG_CMD:-true} "$@"
	return 0
}

# we override the default msg, warning and error as we want the pkgname
msg() {
	[ -n "$quiet" ] && return 0
	local prompt="$GREEN>>>${NORMAL}"
	local fake="${FAKEROOTKEY:+${BLUE}*${NORMAL}}"
	local name="${STRONG}${subpkgname:-$pkgname}${NORMAL}"
	printf "${prompt} ${name}${fake}: %s\n" "$1" >&2
}

warning() {
	local prompt="${YELLOW}>>> WARNING:${NORMAL}"
	local fake="${FAKEROOTKEY:+${BLUE}*${NORMAL}}"
	local name="${STRONG}${subpkgname:-$pkgname}${NORMAL}"
	printf "${prompt} ${name}${fake}: %s\n" "$1" >&2
}

error() {
	local prompt="${RED}>>> ERROR:${NORMAL}"
	local fake="${FAKEROOTKEY:+${BLUE}*${NORMAL}}"
	local name="${STRONG}${subpkgname:-$pkgname}${NORMAL}"
	printf "${prompt} ${name}${fake}: %s\n" "$1" >&2
	logcmd "ERROR: $pkgname: $1"
}

cross_compiling() {
	test "$CBUILD" != "$CHOST" -a -n "$CBUILDROOT"
}

cleanup() {
	local i=
	set_xterm_title ""
	if [ -n "$CLEANUP_FILES" ]; then
		rm -f $CLEANUP_FILES
	fi
	for i; do
		case $i in
		pkgdir) msg "Cleaning up pkgdir"; rm -rf "$pkgbasedir";;
		srcdir) msg "Cleaning up srcdir"; rm -rf "$srcdir";;
		deps)
			if [ -z "$install_after" ] && [ -n "$uninstall_after" ]; then
				msg "Uninstalling dependencies..."
				$SUDO_APK del --quiet $apk_opt_wait $uninstall_after
				if cross_compiling; then
					$SUDO_APK del --root "$CBUILDROOT" \
						--quiet $apk_opt_wait \
						$uninstall_after
				fi
			fi
			;;
		esac
	done
}

die() {
	error "$@"
	cleanup $ERROR_CLEANUP
	exit 1
}

spell_error() {
	die "APKBUILD contains '$1'. It should be '$2'"
}

# check if apkbuild is basicly sane
default_sanitycheck() {
	local i= j= suggestion=
	msg "Checking sanity of $APKBUILD..."
	[ -z "$pkgname" ] && die "Missing pkgname in APKBUILD"
	[ -z "${pkgname##* *}" ] && die "pkgname contains spaces"
	[ -z "$pkgver" ] && die "Missing pkgver in APKBUILD"
	if [ "$pkgver" != "volatile" ] && [ -z "$nodeps" ]; then
		$APK version --check --quiet "$pkgver" ||\
			die "$pkgver is not a valid version"
	fi
	[ -z "$pkgrel" ] && die "Missing pkgrel in APKBUILD"
	[ -z "$pkgdesc" ] && die "Missing pkgdesc in APKBUILD"
	[ -z "$url" ] && die "Missing url in APKBUILD"
	[ -z "$license" ] && die "Missing license in APKBULID"
	if [ $(echo "$pkgdesc" | wc -c) -gt 128 ]; then
		die "pkgdesc is too long"
	fi
	is_function package || warning "Missing package() function in APKBUILD"

	if [ -n "$replaces_priority" ] \
		&& ! echo $replaces_priority | egrep -q '^[0-9]+$'; then
		die "replaces_priority must be a number"
	fi
	# check so no package names starts with -
	for i in $pkgname $subpackages; do
		case $i in
		-*) die "${i%:*} is not a valid package name";;
		esac
	done

	# check if CARCH, CBUILD, CHOST and CTARGET is set
	[ -z "$CHOST" ] && die "Please set CHOST in /etc/abuild.conf"

	if [ -z "$CARCH" ]; then
		die "Please fix CHOST, or set CARCH in abuild.conf"
	fi

	for i in $install; do
		local n=${i%.*}
		local suff=${i##*.}
		case "$suff" in
		pre-install|post-install|pre-upgrade|post-upgrade|pre-deinstall|post-deinstall);;
		*) die "$i: unknown install script suffix"
		esac
		if ! subpackages_has "$n" && [ "$n" != "$pkgname" ]; then
			die "$i: install script does not match pkgname or any subpackage"
		fi
		[ -e "$startdir/$i" ] || die "install script $i is missing"
		for j in chown chmod chgrp; do
			if grep -q $j "$startdir"/$i; then
				warning "$i: found $j"
				warning2 "Permissions should be fixed in APKBUILD package()"
			fi
		done
	done

	for i in $triggers; do
		local f=${i%=*}
		local p=${f%.trigger}
		[ "$f" = "$i" ] && die "$f: triggers must contain '='"
		[ "$p" = "$f" ] && die "$f: triggers scripts must have .trigger suffix"
		if ! subpackages_has "$p" && [ "$p" != "$pkgname" ]; then
			die "$p: trigger script does not match pkgname or any subpackage"
		fi

		[ -e "$startdir"/$f ] || die "trigger script $f is missing"
	done
	if [ -n "$source" ]; then
		for i in $source; do
			if install_has "$i"; then
				warning "You should not have \$install in source"
				continue
			fi
			case "$i" in
				*::*) i=${i%%::*};;
				https://*) makedepends_has wget && warning "wget no longer need to be in makedepends when source has https://" ;;
			esac
			list_has ${i##*/} $md5sums $sha256sums $sha512sums \
				|| die "${i##*/} is missing in checksums"
		done
	fi

	# verify that things listed in checksum also is listed in source
	local algo=
	for algo in md5 sha256 sha512; do
		eval set -- \$${algo}sums
		while [ $# -gt 1 ]; do
			local file="$2"
			shift 2
			source_has $file || die "$file exists in ${algo}sums but is missing in source"
		done
	done

	# common spelling errors
	[ -n "$depend" ] && spell_error depend depends
	[ -n "$makedepend" ] && spell_error makedepend makedepends
	[ -n "$pkguser" ] && spell_error pkguser pkgusers
	[ -n "$pkggroup" ] && spell_error pkggroup pkggroups
	[ -n "$subpackage" ] && spell_error subpackage subpackages

	grep '^# Maintainer:' $APKBUILD >/dev/null || warning "No maintainer"

	makedepends_has 'g++' && warning "g++ should not be in makedepends"
	return 0
}

sanitycheck() {
	default_sanitycheck
}

sumcheck() {
	local algo="$1" sums="$2"
	local dummy f endreturnval originalparams origin file

	# get number of checksums
	set -- $sums
	local numsums=$(( $# / 2 ))

	set -- $source
	if [ $# -ne $numsums ]; then
		die "Number of ${algo}sums($numsums) does not correspond to number of sources($#)"
	fi
	fetch || return 1
	msg "Checking ${algo}sums..."
	cd "$srcdir" || return 1
	IFS=$'\n'
	endreturnval=0
	for src in $sums; do
		origin=$1; shift
		echo "$src" | ${algo}sum -c
		if [ $? -ne 0 ]; then
			endreturnval=1
			is_remote $origin || continue
			echo "Because the remote file above failed the ${algo}sum check it will be deleted."
			echo "Rebuilding will cause it to re-download which in some cases may fix the problem."
			file=`echo "$src" | sed 's/.*[ \t\n]\(.*\)/\1/'`
			echo "Deleting: $file"
			rm $file
		fi
	done
	unset IFS
	return $endreturnval
}

# for compatibility
md5check() {
	warning "'md5check' is deprecated. Use 'verify' instead"
	sumcheck md5 "$md5sums"
}

# verify checksums
verify() {
	local verified=false algo=
	for algo in sha512 sha256 sha1 md5; do
		local sums=
		eval sums=\"\$${algo}sums\"
		if [ -z "$sums" ] || [ -z "$source" ]; then
			continue
		fi
		sumcheck "$algo" "$sums" || return 1
		verified=true
		break
	done
	if [ -n "$source" ] && ! $verified; then
		die "Use 'abuild checksum' to generate/update the checksum(s)"
	fi
	return 0
}

# verify upstream sources
sourcecheck() {
	local uri
	for uri in $source; do
		is_remote $uri || continue
		case "$uri" in
		saveas-*://*)
			uri=${uri#saveas-}
			uri=${uri%/*}
			;;
		*::*)
			uri=${uri##*::}
			;;
		esac
		wget -q -s "$uri" || return 1
	done
	return 0
}

# convert curl options to wget options and call wget instead of curl
wget_fallback() {
	local wget_opts= outfile= opt=
	while getopts "C:Lko:s" opt; do
		case $opt in
		'L') ;; # --location. wget does this by default
		'f') ;; # --fail. wget does this by default
		'C') wget_opts="$wget_opts -c";; # --continue-at
		's') wget_opts="$wget_opts -q";; # --silent
		'o') wget_opts="$wget_opts -O $OPTARG";; # --output
		'k') wget_opts="$wget_opts --no-check-certificate";; #gnu wget
		esac
	done
	shift $(( $OPTIND - 1 ))
	wget $wget_opts "$1"
}

uri_fetch() {
	local uri="$1"
	local d="${uri##*/}"	# $(basename $uri)
	local opts
	[ -n "$quiet" ] && opts="-s"

	local lockfile="$SRCDEST/$d".lock

	# fix saveas-*://* URIs
	case "$uri" in
		# remove 'saveas-' from beginning and
		# '/filename' from end of URI
		saveas-*://*) uri="${uri:7:$(expr ${#uri} - 7 - ${#d} - 1)}";;

		*::*)
			d=${uri%%::*}
			uri=${uri#$d::}
			;;
	esac

	case "$uri" in
		https://*) opts="-k";;
	esac

	mkdir -p "$SRCDEST"

	CLEANUP_FILES="$CLEANUP_FILES $lockfile"
	(
	flock -n -x 9 || msg "Waiting for ${lockfile##*/}..."
	flock -x 9

	[ -f "$SRCDEST/$d" ] && exit 0 # use exit since its a subshell

	if [ -f "$SRCDEST/$d.part" ]; then
		msg "Partial download found. Trying to resume"
		opts="$opts -C -"
	fi
	msg "Fetching $uri"

	# fallback to wget if curl is missing. useful for bootstrapping
	local fetcher=
	if ! [ -x "$(which curl)" ]; then
		fetcher=wget_fallback
	else
		fetcher=curl
		opts="$opts -L -f -k"
	fi

	$fetcher $opts -o "$SRCDEST/$d.part" "$uri" \
		&& mv "$SRCDEST/$d.part" "$SRCDEST/$d"

	) 9>$lockfile

	local rc=$?
	rm -f "$lockfile"
	return $rc
}

is_remote() {
	case "${1#*::}" in
		http://*|ftp://*|https://*|saveas-*://*)
			return 0;;
	esac
	return 1
}

filename_from_uri() {
	local uri="$1"
	local filename="${uri##*/}"  # $(basename $uri)
	case "$uri" in
	*::*) filename=${uri%%::*};;
	esac
	echo "$filename"
}

# try download from file from mirror first
uri_fetch_mirror() {
	local uri="$1"
	if [ -n "$DISTFILES_MIRROR" ]; then
		if is_remote "$DISTFILES_MIRROR"; then
			uri_fetch "$DISTFILES_MIRROR"/$(filename_from_uri $uri)\
				&& return 0
		else
			cp "$DISTFILES_MIRROR"/$(filename_from_uri $uri) \
				"$SRCDEST" && return 0
		fi
	fi
	uri_fetch "$uri"
}

default_fetch() {
	local s
	mkdir -p "$srcdir"
	for s in $source; do
		if is_remote "$s"; then
			uri_fetch_mirror "$s" || return 1
			ln -sf "$SRCDEST/$(filename_from_uri $s)" "$srcdir"/
		else
			ln -sf "$startdir/$s" "$srcdir/"
		fi
	done
}

fetch() {
	default_fetch
}

# verify that all init.d scripts are openrc runscripts
initdcheck() {
	local i
	for i in $source; do
		case $i in
		*.initd)
			head -n 1 "$srcdir"/$i | grep -q '/sbin/runscript' \
				&& continue
			error "$i is not an openrc #!/sbin/runscript"
			return 1
			;;
		esac
	done
}

# unpack the sources
default_unpack() {
	local u
	if [ -z "$force" ]; then
		verify || return 1
		initdcheck || return 1
	fi
	mkdir -p "$srcdir"
	for u in $source; do
		local s="$SRCDEST/$(filename_from_uri $u)"
		case "$s" in
			*.tar)
				msg "Unpacking $s..."
				tar -C "$srcdir" -xf "$s" || return 1;;
			*.tar.gz|*.tgz)
				msg "Unpacking $s..."
				tar -C "$srcdir" -zxf "$s" || return 1;;
			*.tar.bz2)
				msg "Unpacking $s..."
				tar -C "$srcdir" -jxf "$s" || return 1;;
			*.tar.lzma)
				msg "Unpacking $s..."
				unlzma -c "$s" | tar -C "$srcdir" -x  \
					|| return 1;;
			*.tar.xz)
				msg "Unpacking $s..."
				unxz -c "$s" | tar -C "$srcdir" -x || return 1;;
			*.zip)
				msg "Unpacking $s..."
				unzip "$s" -d "$srcdir" || return 1;;
		esac
	done
}

unpack() {
	default_unpack
}

# cleanup source and package dir
clean() {
	msg "Cleaning temporary build dirs..."
	rm -rf "$srcdir"
	rm -rf "$pkgbasedir"
}

# cleanup fetched sources
cleancache() {
	local s
	for s in $source; do
		if is_remote "$s"; then
			s=$(filename_from_uri $s)
			msg "Cleaning downloaded $s ..."
			rm -f "$SRCDEST/$s"
		fi
	done
}

listpkgnames() {
	local i
	for i in $pkgname $subpackages; do
		echo ${i%:*}
	done
	for i in $linguas; do
		echo $pkgname-lang-$i
	done
}

cleanpkg() {
	local i
	getpkgver || return 1
	msg "Cleaning built packages..."
	for i in $(listpkgnames); do
		local p="${i%:*}-$pkgver-r$pkgrel"
		rm -f "$PKGDEST/$p.apk" "$PKGDEST/$p.src.tar.gz" \
			"$abuildrepo"/$p.apk "$abuildrepo"/*/$p.apk
	done
	# remove given packages from index
	update_abuildrepo_index
}

# clean all packages except current
cleanoldpkg() {
	local i j
	getpkgver || return 1
	msg "Cleaning all packages except $pkgver-r$pkgrel..."
	for i in $(listpkgnames); do
		local pn=${i%:*}
		for j in "$PKGDEST"/$pn-[0-9]*.apk ; do
			[ "$j" = "$PKGDEST/$pn-$pkgver-r$pkgrel.apk" ] \
				&& continue
			rm -f "$j" "$abuildrepo"/*/${j##*/}
		done
	done
	update_abuildrepo_index
	return 0
}

mkusers() {
	local i
	for i in $pkggroups; do
		if ! getent group $i >/dev/null; then
			msg "Creating group $i"
			$ADDGROUP -S $i || return 1
		fi
	done
	for i in $pkgusers; do
		if ! getent passwd $i >/dev/null; then
			local gopt=
			msg "Creating user $i"
			if getent group $i >/dev/null; then
				gopt="-G $i"
			fi
			$ADDUSER -S -D -H $gopt $i || return 1
		fi
	done
}

# helper to update config.sub to a recent version
update_config_sub() {
	local changed=false
	find . -name config.sub | while read f; do
		if ! ./$f armv6-alpine-linux-muslgnueabihf 2>/dev/null; then
			msg "Updating $f"
			cp "$datadir"/${f##*/} "$f" || return 1
			changed=true
		else
			msg "No update needed for $f"
		fi
		# pipe subshell will return status of last command
		$changed
	done
	return $?
}

runpart() {
	local part=$1
	[ -n "$DEBUG" ] && msg "$part"
	$part || die "$part failed"
}

# override those in your build script
getpkgver() {
	# this func is supposed to be overridden by volatile packages
	if [ "$pkgver" = "volatile" ]; then
		error "Please provide a getpkgver() function in your APKBUILD"
		return 1
	fi
}

prepare() {
	:
}

build() {
	:
}

# generate a simple tar.gz package of pkgdir
targz() {
	cd "$pkgdir" || return 1
	mkdir -p "$PKGDEST"
	tar -czf "$PKGDEST"/$pkgname-$pkgver-r$pkgrel.tar.gz *
}

get_split_func() {
	# get the 'func' from "sub-pkg:func"
	local func=${1##*:}

	# get 'func' from "sub-pkg-func" if there was no :func
	[ "$func" = "$1" ] && func=${func##*-}
	echo $func
}

postcheck() {
	local dir="$1" name="$2" i=
	msg "Running postcheck for $name"
	# checking for FHS compat
	if ! options_has "!fhs"; then
		for i in "$dir"/srv/* "$dir"/usr/local/* "$dir"/opt/*; do
			if [ -e "$i" ]; then
				error "Packages must not put anything under /srv, /usr/local or /opt"
				return 1
			fi
		done
		if [ -d "$dir"/usr/var ]; then
			error "Found /usr/var, localstatedir is most likely wrong"
			return 1
		fi
	fi
	# look for *.la files
	i=$(find "$dir" -name '*.la' | sed "s|^$dir|\t|")
	if [ -n "$i" ] && ! options_has "libtool"; then
		error "Libtool archives (*.la) files found and \$options has no 'libtool' flag:"
		echo "$i"
		return 1
	fi
	# look for /usr/lib/charset.alias
	if [ -e "$dir"/usr/lib/charset.alias ] \
			&& ! options_has "charset.alias"; then
		error "Found /usr/lib/charset.alias"
		return 1
	fi
	# check directory permissions
	i=$(find "$dir" -type d -perm -777 | sed "s|^$dir|\t|")
	if [ -n "$i" ]; then
		warning "World writeable directories found:"
		echo "$i"
	fi
	# check so we dont have any suid root binaries that are not PIE
	i=$(find "$dir" -type f -perm +6000 \
		| xargs scanelf --nobanner --etype ET_EXEC \
		| sed "s|ET_EXEC $dir|\t|")
	if [ -n "$i" ]; then
		error "Found non-PIE files that has SUID:"
		echo "$i"
		return 1
	fi
	# test suid bit on executable
	if ! options_has "suid"; then
		i=$(find "$dir" \( -perm -u+s -o -perm -g+s \) -a -type f \
			-a -perm -o+x)
		if [ -n "$i" ]; then
			error "Found executable files with SUID bit set:"
			echo "$i"
			return 1
		fi
	fi

	# test for textrels
	if ! options_has "textrels"; then
		local res="$(scanelf --recursive --textrel --quiet "$dir")"
		if [ -n "$res" ]; then
			error "Found textrels:"
			echo "$res"
			return 1
		fi
	fi
	return 0
}

prepare_subpackages() {
	local i
	cd "$startdir"
	for i in $subpackages; do
		local func=$(get_split_func $i)
		# call abuild recursively, setting subpkg{dir,name}
		msg "Running split function $func..."
		local dir="$pkgbasedir/${i%:*}" name="${i%:*}"
		( subpkgdir="$dir" subpkgname="$name" \
			$0 $func prepare_package \
			&& postcheck "$dir" "$name" ) || return 1
	done
	postcheck "$pkgdir" "$pkgname" || return 1
	# post check for /usr/share/locale
	if [ -d "$pkgdir"/usr/share/locale ]; then
		warning "Found /usr/share/locale"
		warning2 "Maybe add \$pkgname-lang to subpackages?"
	fi
}

default_lang() {
	pkgdesc="Languages for package $pkgname"
	install_if="$pkgname=$pkgver-r$pkgrel lang"
	arch="noarch"
	local dir
	for dir in ${langdir:-/usr/share/locale}; do
		mkdir -p "$subpkgdir"/${dir%/*}
		mv "$pkgdir"/"$dir" "$subpkgdir"/"$dir" || return 1
	done
}

lang() {
	default_lang
}

default_lang_subpkg() {
	if [ -z "$lang" ]; then
		error "lang is not set"
		return 1
	fi
	pkgdesc="$pkgname language pack for $lang"
	arch="noarch"
	install_if="$pkgname=$pkgver-r$pkgrel lang-$lang"
	local dir
	for dir in ${langdir:-/usr/share/locale}; do
		mkdir -p "$subpkgdir"/$dir
		mv "$pkgdir"/$dir/$lang* \
		"$subpkgdir"/$dir/ \
		|| return 1
	done
}

lang_subpkg() {
	default_lang_subpkg
}

prepare_language_packs() {
	for lang in $linguas; do
		lang="$lang" \
		subpkgname="$pkgname-lang-$lang" \
		subpkgdir="$pkgbasedir"/$subpkgname \
			$0 lang_subpkg prepare_package || return 1
	done
}

# echo '-dirty' if git is not clean
git_dirty() {
	if [ $(git status -s "$startdir" | wc -l) -ne 0 ]; then
		echo "-dirty"
	fi
}

# echo last commit hash id
git_last_commit() {
	git log --format=oneline -n 1 "$startdir" | awk '{print $1}'
}

get_maintainer() {
	if [ -z "$maintainer" ]; then
		maintainer=$(awk -F': ' '/\# *Maintainer/ {print $2}' "$APKBUILD")
	fi
}

prepare_metafiles() {
	getpkgver || return 1
	local name=${subpkgname:-$pkgname}
	[ -z "${name##* *}" ] && die "package name contains spaces"
	local dir=${subpkgdir:-$pkgdir}
	local pkg="$name-$pkgver-r$pkgrel.apk"
	local pkginfo="$controldir"/.PKGINFO
	local sub

	[ ! -d "$dir" ] && die "Missing $dir"
	cd "$dir"
	mkdir -p "$controldir"
	local builddate=$(date -u "+%s")
	local size=$(du -sk | awk '{print $1 * 1024}')
	local parch="$CARCH"

	# we need to wait with setting noarch til our build infra can handle it
#	if [ "$arch" = "noarch" ]; then
#		parch="noarch"
#	fi

	echo "# Generated by $(basename $0) $program_version" >"$pkginfo"
	if [ -n "$FAKEROOTKEY" ]; then
		echo "# using $($FAKEROOT -v)" >> "$pkginfo"
	fi
	echo "# $(date -u)" >> "$pkginfo"
	cat >> "$pkginfo" <<EOF
pkgname = $name
pkgver = $pkgver-r$pkgrel
pkgdesc = $pkgdesc
url = $url
builddate = $builddate
packager = ${PACKAGER:-"Unknown"}
size = $size
arch = $parch
origin = $pkgname
EOF
	local i deps
	deps="$depends"
	if [ "$pkgname" != "busybox" ] && ! depends_has busybox; then
		for i in $install $triggers; do
			local s=${i%=*}
			[ "$name" != "${s%.*}" ] && continue
			if head -n 1 "$startdir/$s" | grep '^#!/bin/sh' >/dev/null ; then
				msg "Script found. busybox added as a dependency for $pkg"
				deps="$deps busybox"
				break
			fi
		done
	fi

	# store last_commit in global var so we only call git once
	if [ -z "$last_commit" ]; then
		last_commit="$(git_last_commit)$(git_dirty)"
	fi
	echo "commit = $last_commit" >> "$pkginfo"

	get_maintainer
	if [ -n "$maintainer" ]; then
		echo "maintainer = $maintainer" >> "$pkginfo"
	fi

	if [ -n "$replaces_priority" ]; then
		echo "replaces_priority = $replaces_priority" >> "$pkginfo"
	fi

	for i in $license; do
		echo "license = $i" >> "$pkginfo"
	done
	for i in $replaces; do
		echo "replaces = $i" >> "$pkginfo"
	done
	for i in $deps; do
		echo "depend = $i" >> "$pkginfo"
	done
	for i in $conflicts; do
		echo "conflict = $i" >> "$pkginfo"
	done
	for i in $provides; do
		echo "provides = $i" >> "$pkginfo"
	done
	for i in $triggers; do
		local f=${i%=*}
		local dirs=${i#*=}
		[ "${f%.trigger}" != "$name" ] && continue
		echo "triggers = ${dirs//:/ }" >> "$pkginfo"
	done
	if [ -n "$install_if" ]; then
		echo "install_if = $(echo $install_if)" >> "$pkginfo"
	fi

	local metafiles=".PKGINFO"
	for i in $install $triggers; do
		local f=${i%=*}
		local n=${f%.*}
		if [ "$n" != "$name" ]; then
			continue
		fi
		script=${f#$name}
		msg "Adding $script"
		cp "$startdir/$f" "$controldir/$script" || return 1
		chmod +x "$controldir/$script"
		metafiles="$metafiles $script"
	done
	echo $metafiles | tr ' ' '\n' > "$controldir"/.metafiles
}

prepare_tracedeps() {
	local dir=${subpkgdir:-$pkgdir}
	local etype= soname= file= sover=
	[ "$arch" = "noarch" ] && return 0
	options_has "!tracedeps" && return 0
	# lets tell all the places we should look for .so files - all rpaths
	scanelf --quiet --recursive --rpath "$dir" \
		| sed -e 's/[[:space:]].*//' -e 's/:/\n/' | sort -u \
		>"$controldir"/.rpaths
	if grep -q -x '/usr/lib' "$controldir"/.rpaths; then
		warning "Redundant /usr/lib in rpath found"
	fi
	if grep '^/home/' "$controldir"/.rpaths; then
		error "Has /home/... in rpath"
		return 1
	fi
}

# check if dir has arch specific binaries
dir_has_arch_binaries() {
	local dir="$1"
	# if scanelf returns something, then we have binaries
	[ -n "$(scanelf -R "$dir" | head -n 1)" ] && return 0

	# look for static *.a
	[ -n "$(find "$dir" -type f -name '*.a' | head -n 1)" ] && return 0

	return 1
}

# returns true if this is the -dev package
is_dev_pkg() {
	test "${subpkgname%-dev}" != "$subpkgname"
}

# check that noarch is set if needed
archcheck() {
	options_has "!archcheck" && return 0
	if dir_has_arch_binaries "${subpkgdir:-$pkgdir}"; then
		[ "$arch" != "noarch" ] && return 0
		error "Arch specific binaries found so arch must not be set to \"noarch\""
		return 1
	elif [ "$arch" != "noarch" ] && ! is_dev_pkg; then
		# we dont want -dev package go to noarch
		warning "No arch specific binaries found so arch should probably be set to \"noarch\""
	fi
	return 0
}

prepare_package() {
	msg "Preparing ${subpkgname:+sub}package ${subpkgname:-$pkgname}..."
	stripbin
	prepare_metafiles && prepare_tracedeps || return 1
	archcheck
}

pkginfo_val() {
	local key="$1"
	local file="$2"
	awk -F ' = ' "\$1 == \"$key\" {print \$2}" "$file"
}

# find real path to so files
real_so_path() {
	local so="$1"
	shift
	while [ $# -gt 0 ]; do
		[ -e "$1"/$so ] && realpath "$1/$so" && return 0
		shift
	done
	error "$so: path not found"
	return 1
}

# search rpaths and /usr/lib /lib for given so files
find_so_files() {
	local rpaths=$(cat "$1")
	shift
	while [ $# -gt 0 ]; do
		real_so_path "$1" /usr/lib /lib $rpaths || return 1
		shift
	done
	return 0
}

subpkg_provides() {
	grep -q -w "^$1" "$pkgbasedir"/.control.*/.provides-so 2>/dev/null
}

trace_apk_deps() {
	local name="$1"
	local dir="$2"
	local i= found= autodeps= deppkgs= missing=
	msg "Tracing dependencies..."
	# add pkgconfig if usr/lib/pkgconfig is found
	if [ -d "$pkgbasedir"/$name/usr/lib/pkgconfig ] \
			&& ! grep -q '^depend = pkgconfig' "$dir"/.PKGINFO; then
		msg "  added pkgconfig (found /usr/lib/pkgconfig)"
		autodeps="$autodeps pkgconfig"
	fi

	# special case for libpthread: we need depend on libgcc
	if [ -f "$dir"/.needs-so ] && grep -q -w '^libpthread.so.*' "$dir"/.needs-so \
			&& ! grep -q -w "^depend = libgcc" "$dir"/.PKGINFO; then
		autodeps="$autodeps libgcc"
		msg "  added libgcc (due to libpthread)"
	fi
	[ -f "$dir"/.needs-so ] && for i in $(cat "$dir"/.needs-so); do
		# first check if its provided by same apkbuild
		grep -q -w "^$i" "$dir"/.provides-so 2>/dev/null && continue

		if subpkg_provides "$i" || cross_compiling \
				|| $APK info --quiet --installed "so:$i"; then
			autodeps="$autodeps so:$i"
		else
			missing="$missing $i"
		fi
	done

	# find all packages that holds the so files
	if [ -f "$dir"/.rpaths ]; then
		local so_files=$(find_so_files "$dir"/.rpaths $missing) \
			|| return 1
		deppkgs=$($APK info --quiet --who-owns $so_files) || return 1
	fi

	for found in $deppkgs; do
		if grep -w "^depend = ${found}$" "$dir"/.PKGINFO >/dev/null ; then
			warning "You can remove '$found' from depends"
			continue
		fi
		autodeps="$autodeps $found"
	done

	echo "# automatically detected:" >> "$dir"/.PKGINFO
	if [ -f "$dir"/.provides-so ]; then
		sed 's/^\(.*\) \([0-9].*\)/provides = so:\1=\2/' "$dir"/.provides-so \
			>> "$dir"/.PKGINFO
	fi
	[ -z "$autodeps" ] && return 0
	for i in $autodeps; do
		echo "depend = $i"
	done | sort -u >> "$dir"/.PKGINFO
	# display all depends
	sed -n '/^depend =/s/depend = /\t/p' "$dir"/.PKGINFO >&2
}

find_scanelf_paths() {
	local datadir="$1"
	local paths="$datadir/lib:$datadir/usr/lib" i= rpaths=
	if [ -n "$ldpath" ]; then
		paths="$paths:$(echo "${datadir}${ldpath}" | sed "s|:|:$datadir|g")"
	fi
	# search in all rpaths
	for rpaths in "$pkgbasedir"/.control.*/.rpaths; do
		[ -f "$rpaths" ] || continue
		while read i; do
			local dir="${datadir}${i}"
			IFS=:
			if [ -d "$dir" ] && ! list_has "$dir" $paths; then
				paths="$paths:${dir}"
			fi
			unset IFS
		done < "$rpaths"
	done
	echo "$paths"
}

scan_shared_objects() {
	local name="$1" controldir="$2" datadir="$3"
	local opt= i=

	# allow spaces in paths
	IFS=:
	set -- $(find_scanelf_paths "$datadir")
	unset IFS

	# sanity check, verify that each path is prefixed with datadir
	for i; do
		if [ "${i#$datadir}" = "$i" ]; then
			error "Internal error in scanelf paths"
			return 1
		fi
	done

	if options_has "ldpath-recursive"; then
		opt="--recursive"
	fi
	msg "Scanning shared objects"
	# lets tell all the .so files this package provides in .provides-so
	scanelf --nobanner --soname $opt "$@" | while read etype soname file; do
		# if soname field is missing, soname will be the filepath
		sover=0
		if [ -z "$file" ]; then
			file="$soname"
			soname=${soname##*/}
		fi

		# we only want shared libs
		case $soname in
		*.so|*.so.[0-9]*|*.c32);;
		*) continue;;
		esac

		case "$file" in
		*.so.[0-9]*) sover=${file##*.so.};;
		*.so)
			# filter out sonames with version when file does not
			# have version
			case "$soname" in
			*.so.[0-9]*)
				if options_has "sover-namecheck"; then
					continue
				fi
			esac
			;;
		esac
		list_has "$soname" $somask && continue
		echo "$soname $sover"
	# use awk to filter out dupes that has sover = 0
	done | awk '{ if (so[$1] == 0) so[$1] = $2; }
		END { for (i in so) print(i " " so[i]); }' \
		| sort -u > "$controldir"/.provides-so

	# verify that we dont have any duplicates
	local dupes="$(cut -d' ' -f1 "$controldir"/.provides-so | uniq -d)"
	if [ -n "$dupes" ]; then
		die  "provides multiple versions of same shared object: $dupes"
	fi

	# now find the so dependencies
	scanelf --nobanner --recursive --needed "$datadir"  | tr ' ' ':' \
		| awk -F ":" '$2 != "" && ($1 == "ET_DYN" || $1 == "ET_EXEC") {print $2}'  \
		| sed 's:,:\n:g' | sort -u \
	| while read soname; do
		# only add files that are not self provided
		grep -q -w "^$soname" "$controldir"/.provides-so \
			|| list_has "$soname" $somask \
			|| echo $soname
	done > "$controldir"/.needs-so
}

# read size in bytes from stdin and show as human readable
human_size() {
	awk '{  split("B KB MB GB TB PB", type)
		for(i=5; y < 1; i--)
			y = $1 / (2**(10*i))
		printf("%.1f %s\n", y, type[i+2]) }'
}

create_apks() {
	local file= dir= name= ver= apk= datadir= size=
	getpkgver || return 1
	mkdir -p "$PKGDEST"
	if [ "$arch" != "noarch" ] && ! options_has "!tracedeps"; then
		for file in "$pkgbasedir"/.control.*/.PKGINFO; do
			dir="${file%/.PKGINFO}"
			name="$(pkginfo_val pkgname $file)"
			datadir="$pkgbasedir"/$name
			subpkgname=$name
			scan_shared_objects "$name" "$dir" "$datadir"
		done
	fi
	for file in "$pkgbasedir"/.control.*/.PKGINFO; do
		dir="${file%/.PKGINFO}"
		name=$(pkginfo_val pkgname $file)
		ver=$(pkginfo_val pkgver $file)
		size=$(pkginfo_val size $file | human_size)
		apk=$name-$ver.apk
		datadir="$pkgbasedir"/$name
		subpkgname=$name

		trace_apk_deps "$name" "$dir" || return 1
		msg "Package size: ${size}"
		msg "Compressing data..."
		(
		cd "$datadir"
		# data.tar.gz
		set -- *
		if [ "$1" = '*' ]; then
			touch .dummy
			set -- .dummy
		fi
		tar -c "$@" | abuild-tar --hash | gzip -9 >"$dir"/data.tar.gz

		msg "Create checksum..."
		# append the hash for data.tar.gz
		local sha256=$(sha256sum "$dir"/data.tar.gz | cut -f1 -d' ')
		echo "datahash = $sha256" >> "$dir"/.PKGINFO

		# control.tar.gz
		cd "$dir"
		tar -c $(cat "$dir"/.metafiles) | abuild-tar --cut \
			| gzip -9 > control.tar.gz
		abuild-sign -q control.tar.gz || exit 1

		msg "Create $apk"
		# create the final apk
		cat control.tar.gz data.tar.gz > "$PKGDEST"/$apk
		)
	done
	subpkgname=
}

clean_abuildrepo() {
	local apk
	cd "$abuildrepo" || return 1

	# remove compat symlink
	for d in "$abuildrepo/$CARCH"; do
		[ -L "$d" ] && rm "$d"
	done

	# remove broken links from abuildrepo
	for apk in *.apk */*.apk; do
		if [ -L "$apk" ] && [ ! -f "$apk" ]; then
			rm -f "$apk"
		fi
	done
}

mklinks_abuildrepo() {
	[ -n "$REPODEST" ] && return 0
	local apk
	mkdir -p "$abuildrepo"/$CARCH
	cd "$abuildrepo" || return 1
	# create links for this package
	for apk in $(listpkg); do
		[ -f "$PKGDEST"/$apk ] || continue
		ln -sf "$PKGDEST"/$apk "$abuildrepo"/$CARCH/$apk
	done
}

build_abuildrepo() {
	local d apk _build=build
	if ! is_function package; then
		# if package() is missing then build is called from rootpkg
		_build=true
	fi
	if ! apk_up2date || [ -n "$force" ]; then
		# check early if we have abuild key
		abuild-sign --installed || return 1
		logcmd "building ${abuildrepo##*/}/$pkgname-$pkgver-r$pkgrel"
		sanitycheck && builddeps && clean && fetch && unpack \
			&& prepare && mkusers && $_build && rootpkg \
			&& cleanup $CLEANUP \
			|| return 1
	fi
	update_abuildrepo_index
}

update_abuildrepo_index() {
	clean_abuildrepo
	mklinks_abuildrepo

	cd "$abuildrepo"
	local index=$CARCH/APKINDEX.tar.gz

	msg "Updating the cached abuild repository index..."
	local sign=".SIGN.RSA.${SIGN_PUBLIC_KEY##*/}"
	local oldindex=
	if [ -f "$index" ]; then
		oldindex="--index $index"
	fi
	$APK index --quiet $oldindex --output "$index".unsigned \
		--description "$repo $(cd $startdir && git describe)" \
		--rewrite-arch $CARCH \
		$CARCH/*.apk || exit 1
	msg "Signing the index..."
	abuild-sign -q "$index".unsigned || exit 1
	mv "$index".unsigned "$index"
	chmod 644 "$index"
}

# predefined splitfunc doc
default_doc() {
	depends="$depends_doc"
	pkgdesc="$pkgdesc (documentation)"
	arch=${arch_doc:-"noarch"}

	local i
	for i in doc man info html sgml licenses gtk-doc ri help; do
		if [ -d "$pkgdir/usr/share/$i" ]; then
			mkdir -p "$subpkgdir/usr/share"
			mv "$pkgdir/usr/share/$i" "$subpkgdir/usr/share/"
		fi
	done

	# compress man pages
	find "$subpkgdir"/usr/share/man/*[1-9] \
		-type f \! -name \*.gz \! -name \*.bz2 2>/dev/null |
		xargs -r gzip -9

	rm -f "$subpkgdir/usr/share/info/dir"

	# remove if empty, ignore error (not empty)
	rmdir "$pkgdir/usr/share" "$pkgdir/usr" 2>/dev/null

	return 0
}

doc() {
	default_doc
}

# predefined splitfunc doc
default_dbg() {
	local f
	binfiles=$(scanelf -R "$pkgdir" | grep ET_DYN | sed "s:$pkgdir\/::g" | sed "s:ET_DYN ::g")
	for f in $binfiles; do
		srcdir=$(dirname $pkgdir/$f)
		srcfile=$(basename $pkgdir/$f)
		dstdir=$(dirname $subpkgdir/usr/lib/debug/$f.debug)
		dstfile=$(basename $subpkgdir/usr/lib/debug/$f.debug)
		if [ ! -d $dstdir ] ; then
			mkdir -p $dstdir
		fi
		cd $srcdir
		objcopy --only-keep-debug $srcfile $dstfile
		objcopy --add-gnu-debuglink=$dstfile $srcdir/$srcfile
		mv $dstfile $dstdir
		strip $srcfile
	done
	return 0
}

dbg() {
	default_dbg
}

# predefined splitfunc dev
default_dev() {
	local i= j=
	depends="$pkgname=$pkgver-r$pkgrel $depends_dev"
	pkgdesc="$pkgdesc (development files)"

	for i in $origsubpackages; do
		[ "${i%:*}" = "$subpkgname" ] || depends="$depends ${i%:*}=$pkgver-r$pkgrel"
	done

	cd "$pkgdir" || return 0
	for i in usr/include usr/lib/pkgconfig usr/share/aclocal\
			usr/share/gettext usr/bin/*-config	\
			usr/share/vala/vapi usr/share/gir-[0-9]*\
			usr/share/qt*/mkspecs			\
			usr/lib/qt*/mkspecs			\
			usr/lib/cmake				\
			$(find . -name include -type d) 	\
			$(find lib/ usr/ -name '*.[acho]' \
				-o -name '*.prl' 2>/dev/null); do
		if [ -e "$pkgdir/$i" ] || [ -L "$pkgdir/$i" ]; then
			d="$subpkgdir/${i%/*}"	# dirname $i
			mkdir -p "$d"
			mv "$pkgdir/$i" "$d"
			rmdir "$pkgdir/${i%/*}" 2>/dev/null
		fi
	done
	# move *.so links needed when linking the apps to -dev packages
	for i in lib/*.so usr/lib/*.so; do
		if [ -L "$i" ]; then
			mkdir -p "$subpkgdir"/"${i%/*}"
			mv "$i" "$subpkgdir/$i" || return 1
		fi
	done
	return 0
}

dev() {
	default_dev
}

# predefined splitfunc libs
default_libs() {
	pkgdesc="$pkgdesc (libraries)"
	local dir= file=
	for dir in lib usr/lib; do
		for file in "$pkgdir"/$dir/lib*.so.[0-9]*; do
			[ -f "$file" ] || continue
			mkdir -p "$subpkgdir"/$dir
			mv "$file" "$subpkgdir"/$dir/
		done
	done
}

libs() {
	default_libs
}

is_function() {
	type "$1" 2>&1 | head -n 1 | egrep -q "is a (shell )?function"
}

do_fakeroot() {
	if [ -n "$FAKEROOT" ]; then
		$FAKEROOT -- "$@"
	else
		"$@"
	fi
}

# build and package in fakeroot
rootpkg() {
	local _package=package
	if ! is_function package; then
		# if package() is missing then run 'build' in fakeroot instead
		warning "No package() function in APKBUILD"
		_package=build
	fi
	cd "$startdir"
	rm -rf "$pkgdir"
	[ -n "$FAKEROOT" ] && msg "Entering fakeroot..."
	do_fakeroot "$abuild_path" $color_opt \
		$_package \
		prepare_subpackages \
		prepare_language_packs \
		prepare_package \
		create_apks
}

srcpkg() {
	getpkgver || return 1
	local p="$pkgname-$pkgver-$pkgrel"
	local prefix="${startdir##*/}"
	local i files="$prefix/APKBUILD"
	for i in $source; do
		files="$files $prefix/$(filename_from uri $i)"
	done
	mkdir -p "$PKGDEST"
	msg "Creating source package $p.src.tar.gz..."
	(cd .. && tar -zcf "$PKGDEST/$p.src.tar.gz" $files)
}

# return true if arch is supported or noarch
check_arch() {
	list_has $CARCH $arch || [ "$arch" = "noarch" ] || [ "$arch" = "all" ]
}

# return true if libc is not masked in options
check_libc() {
	! list_has "!libc_$CLIBC" $options
}

# check if package is up to date
apk_up2date() {
	getpkgver || return 1
	local pkg="$PKGDEST/$pkgname-$pkgver-r$pkgrel.apk"
	local i s
	cd "$startdir"
	for i in $pkgname $subpackages; do
		[ -f "$PKGDEST/$pkgname-$pkgver-r$pkgrel.apk" ] || return 1
	done
	[ -n "$keep" ] && return 0

	for i in $source APKBUILD; do
		local s
		if is_remote "$i"; then
			s="$SRCDEST/$(filename_from_uri $i)"
		else
			s="$startdir/${i##*/}"
		fi
		if [ "$s" -nt "$pkg" ]; then
			return 1
		fi
	done
	return 0
}

abuildindex_up2date() {
	local i
	getpkgver || return 1
	local dir="$abuildrepo"/$CARCH
	local apk="${pkgname%:*}-$pkgver-r$pkgrel.apk"
	local idx="$dir"/APKINDEX.tar.gz
	local file="$dir"/$apk

	# check if index is missing
	[ -f "$idx" ] || return 1

	# if link or file is missing, then we need update abuildrepo index
	[ -f "$file" ] || return 1

	# if file exists and is newer than index, then we need update index
	[ "$file" -nt "$idx" ] && return 1

	return 0
}

up2date() {
	check_arch || return 0
	check_libc || return 0
	apk_up2date && abuildindex_up2date
}

# rebuild package and abuildrepo index if needed
abuildindex() {
	up2date && return 0
	build_abuildrepo
}

# source all APKBUILDs and output:
#  1) origin of package
#  2) all dependencies
# the output is i in a format easy parseable for awk
depparse_aports() {
	# lets run this in a subshell since we source all APKBUILD here
	(
	aportsdir=$(realpath ${APKBUILD%/APKBUILD}/..)
	for i in $aportsdir/*/APKBUILD; do
		pkgname=
		subpackages=
		depends=
		makedepends=
		. $i
		dir=${i%/APKBUILD}
		deps=
		# filter out conflicts from deps and version info
		for j in $depends $makedepends; do
			case "$j" in
				!*) continue;;
			esac
			deps="$deps ${j%%[<>=]*}"
		done
		for j in $pkgname $subpackages; do
			echo "o ${j%%:*} $dir"
			set -- $deps
			echo -n "d ${j%%:*} $1"
			shift
			while [ $# -gt 0 ]; do
				echo -n ",$1"
				shift
			done
			echo
		done
	done
	)
}

deptrace() {
	local deps= i=
	# strip versions from deps
	for i in "$@"; do
		deps="$deps ${i%%[<>=]*}"
	done
	[ -z "$deps" ] && return 0
	(	depparse_aports
		if [ -z "$upgrade" ]; then
			# list installed pkgs and prefix with 'i '
			$APK info --quiet | sort |  sed 's/^/i /'
		fi
	) | awk -v pkgs="$deps" '

	function depgraph(pkg,	a, i) {
		if (visited[pkg])
			return 0;
		visited[pkg] = 1;
		split(deps[pkg], a, ",");
		for (i in a)
			depgraph(a[i]);
		print pkg ":" origin[pkg];

	}

	$1 == "i" { visited[$2] = 1 }
	$1 == "o" { origin[$2] = $3 }
	$1 == "d" { deps[$2] = $3 }
	END {
		split(pkgs, pkgarray);
		for (i in pkgarray)
			depgraph(pkgarray[i]);
	}
	'
}

# build and install dependencies
builddeps() {
	local pkg= i= missing= conflicts=
	local hostdeps= builddeps= installed_hostdeps= installed_builddeps=
	[ -n "$nodeps" ] && return 0
	msg "Analyzing dependencies..."

	# add depends unless it is a subpackage or package itself
	if cross_compiling && [ -n "$makedepends_build" -o -n "$makedepends_host" ]; then
		builddeps="$makedepends_build"
		for i in $BUILD_BASE; do
			[ "$pkgname" = "${i%%[<>=]*}" ] && continue
			subpackages_has ${i%%[<>=]*} || builddeps="$builddeps $i"
		done
		hostdeps="$makedepends_host"
		for i in $depends; do
			[ "$pkgname" = "${i%%[<>=]*}" ] && continue
			subpackages_has ${i%%[<>=]*} || hostdeps="$hostdeps $i"
		done
	else
		builddeps="$makedepends"
		for i in $BUILD_BASE $depends; do
			[ "$pkgname" = "${i%%[<>=]*}" ] && continue
			subpackages_has ${i%%[<>=]*} || builddeps="$builddeps $i"
		done
	fi

	installed_builddeps=$($APK info --installed $builddeps)
	[ -n "$hostdeps" ] && installed_hostdeps=$($APK info --root "$CBUILDROOT" --installed $hostdeps)

	# find which deps are missing
	for i in $builddeps; do
		if [ "${i#\!}" != "$i" ]; then
			$APK info --quiet --installed "${i#\!}" \
				&& conflicts="$conflicts ${i#\!}"
		elif ! deplist_has $i $installed_builddeps || [ -n "$upgrade" ]; then
			missing="$missing $i"
		fi
	done
	for i in $hostdeps; do
		if [ "${i#\!}" != "$i" ]; then
			$APK info --quiet --installed --root "$CBUILDROOT" "${i#\!}" \
				&& conflicts="$conflicts ${i#\!}"
		elif ! deplist_has $i $installed_hostdeps || [ -n "$upgrade" ]; then
			missing="$missing $i"
		fi
	done

	if [ -n "$conflicts" ]; then
		error "Conflicting package(s) installed:$conflicts"
		return 1
	fi

	if [ -z "$install_deps" ] && [ -z "$recursive" ]; then
		# if we dont have any missing deps we are done now
		[ -z "$missing" ] && return 0
		error "Missing dependencies: $missing Use -r to autoinstall or -R to build"
		return 1
	fi

	uninstall_after=".makedepends-$pkgname $uninstall_after"
	if [ -n "$install_deps" ] && [ -z "$recursive" ]; then
		# make a --simulate run first to detect missing deps
		# apk-tools --virtual is no goot at reporting those.
		msg "Installing packages on builder: $builddeps"
		$SUDO_APK add --repository "$abuildrepo" $apk_opt_wait \
			--simulate --quiet $builddeps || return 1
		$SUDO_APK add --repository "$abuildrepo" $apk_opt_wait \
			--virtual .makedepends-$pkgname $builddeps || return 1
		if [ -n "$hostdeps" ]; then
			$SUDO_APK add --root "$CBUILDROOT" --repository "$abuildrepo" $apk_opt_wait \
				--simulate --quiet $hostdeps || return 1
			$SUDO_APK add --root "$CBUILDROOT" --repository "$abuildrepo" $apk_opt_wait \
				--virtual .makedepends-$pkgname $hostdeps || return 1
		fi
		return 0
	fi

	if [ -n "$CBUILDROOT" ]; then
		error "Recursive rebuilding is not supported when cross compiling."
		return 1
	fi
	[ -z "$recursive" ] && return 1

	# find dependencies that are installed but missing in repo.
	for i in $builddeps; do
		local m=$($APK search --repository "$abuildrepo" ${i%%[<>=]*})
		if [ -z "$m" ]; then
			missing="$missing $i"
		fi
	done

	for i in $(deptrace $missing); do
		# i = pkg:dir
		local dir=${i#*:}
		local pkg=${i%:*}

		# ignore if dependency is in other repo
		[ -d "$dir" ] || continue

		# check if dep is blacklisted
		if list_has $pkg $ABUILD_BLACKLIST; then
			error "$pkg is blacklisted"
			return 1
		fi

		# break circular deps
		list_has $pkg $ABUILD_VISITED && continue
		export ABUILD_VISITED="$ABUILD_VISITED $pkg"

		msg "Entering $dir"
		cd "$dir" && $0 $forceroot $keep $quiet $install_deps \
			$recursive $upgrade $color_opt abuildindex || return 1
	done
	$SUDO_APK add --upgrade --repository "$abuildrepo" \
		$apk_opt_wait \
		--virtual .makedepends-$pkgname $builddeps
}

# replace the md5sums in the APKBUILD
checksum() {
	local s files
	[ -z "$source" ] && [ -n "${md5sums}${sha256sums}${sha512sums}" ] \
		&& msg "Removing checksums from APKBUILD"
	sed -i -e '/^md5sums="/,/"\$/d; /^md5sums=''/,/''\$/d' "$APKBUILD"
	sed -i -e '/^sha512sums="/,/"\$/d; /^sha512sums=''/,/''\$/d' "$APKBUILD"
	sed -i -e '/^sha256sums="/,/"\$/d; /^sha256sums=''/,/''\$/d' "$APKBUILD"
	[ -z "$source" ] && return 0
	fetch
	for s in $source; do
		files="$files $(filename_from_uri $s)"
	done

	# for compatibility/backporting reasons we still add md5sum
	msg "Updating the md5sums in APKBUILD..."
	md5sums="$(cd "$srcdir" && md5sum $files)" || die "md5sum failed"
	echo "md5sums=\"$md5sums\"" >>"$APKBUILD"

	msg "Updating the sha256sums in APKBUILD..."
	sha256sums="$(cd "$srcdir" && sha256sum $files)" \
		|| die "sha256sum failed"
	echo "sha256sums=\"$sha256sums\"" >>"$APKBUILD"

	msg "Updating the sha512sums in APKBUILD..."
	sha512sums="$(cd "$srcdir" && sha512sum $files)" \
		|| die "sha512sum failed"
	echo "sha512sums=\"$sha512sums\"" >>"$APKBUILD"
}

stripbin() {
	local bin
	if options_has "!strip" || [ "$arch" = "noarch" ]; then
		return 0
	fi
	cd "${subpkgdir:-$pkgdir}" || return 1
	msg "Stripping binaries"
	scanelf --recursive --nobanner --etype "ET_DYN,ET_EXEC" . \
		| sed -e 's:^ET_DYN ::' -e 's:^ET_EXEC ::' \
		| xargs -r ${CROSS_COMPILE}strip
}

# simply list target apks
listpkg() {
	local name
	getpkgver || return 1
	for name in $(listpkgnames) ; do
		echo "$name-$pkgver-r$pkgrel.apk"
	done
}

source_has() {
	local i
	for i in $source; do
		[ "$1" = "${i##*/}" ] && return 0
		[ "$1" = "${i%%::*}" ] && return 0
	done
	return 1
}

subpackages_has() {
	local i
	for i in $subpackages; do
		[ "$1" = "${i%:*}" ] && return 0
	done
	return 1
}

subpackage_types_has() {
	local i
	for i in $subpackages; do
		[ "$1" = "${i##*-}" ] && return 0
	done
	return 1
}

list_has() {
	local needle="$1"
	local i
	shift
	for i in $@; do
		[ "$needle" = "$i" ] && return 0
		[ "$needle" = "!$i" ] && return 1
	done
	return 1
}

# same as list_has but we filter version info
deplist_has() {
	local needle="$1"
	local i
	shift
	for i in $@; do
		i=${i%%[<>=]*}
		[ "$needle" = "$i" ] && return 0
		[ "$needle" = "!$i" ] && return 1
	done
	return 1
}

options_has() {
	list_has "$1" $options
}

depends_has() {
	deplist_has "$1" $depends
}

makedepends_has() {
	deplist_has "$1" $makedepends
}

md5sums_has() {
	list_has "$1" $md5sums
}

install_has() {
	list_has "$1" $install
}

# install package after build
post_add() {
	getpkgver || return 1
	local pkgf="$PKGDEST/$1-$pkgver-r$pkgrel.apk"
	local deps i
	if ! subpackages_has $1 && [ "$1" != "$pkgname" ]; then
		die "$1 is not built by this APKBUILD"
	fi
	# recursively install dependencies that are provided by this APKBUILD
	deps=$($APK index "$pkgf" 2>/dev/null | awk -F: '$1=="D" { print $2 }')
	for i in $deps; do
		if subpackages_has $i || [ "$i" = "$pkgname" ]; then
			post_add $i || return 1
		fi
	done
	$SUDO_APK add $apk_opt_wait --upgrade "$pkgf" \
		|| die "Failed to install $1"
}

deps() {
	local builddeps i
	builddeps="$makedepends"
	for i in $depends; do
		[ "$pkgname" = "${i%%[<>=]*}" ] && continue
		subpackages_has ${i%%[<>=]*} || builddeps="$builddeps $i"
	done
	$SUDO_APK add $apk_opt_wait --repository "$abuildrepo" \
		--virtual .makedepends-$pkgname \
		$builddeps
}

undeps (){
	$SUDO_APK del $apk_opt_wait .makedepends-$pkgname
	if cross_compiling; then
		$SUDO_APK del --root "$CBUILDROOT" $apk_opt_wait \
			.makedepends-$pkgname
	fi
}

# compat
installdeps() { deps; }
uninstalldeps() { undeps; }

all() {
	if ! [ -n "$force" ]; then
		check_arch
		if [ $? -ne 0 ]; then
			echo "Package not available for the target architecture ($CARCH). Aborting."
			return 0
		fi
		check_libc || return 0
	fi
	if up2date && [ -z "$force" ]; then
		msg "Package is up to date"
	else
		build_abuildrepo
	fi
}

# This abuild hook will checkout an svn or git repository by specifying
# $svnurl or $giturl in APKBUILD. You can checkout a specific branch in
# git by adding -b $branch in $giturl. $reporev will select the correct
# commit, revision or tag for you. If you specify $disturl your distfile
# will automatically be uploaded with rsync to the url provided.
# Base version defaults to 0 except if specified by $verbase.

snapshot() {
        # check if we setup vars correctly
        [ -z "$disturl" ] && warning "Missing disturl in APKBUILD, auto uploading disabled."
        [ -z "$svnurl" ] && [ -z "$giturl" ] && die "Missding repository url in APKBUILD!"
        [ -n "$svnurl" ] && [ -n "$giturl" ] && die "You can only use a single repository!"
        local _date=$(date +%Y%m%d)
	local _format="tar.gz"
        # remove any repositories left in srcdir
        abuild clean
        mkdir -p "$srcdir" && cd "$srcdir"
        # clone git repo and archive
        if [ -n "$giturl" ]; then
                local _version=${verbase:-0}_git${_date}
                command -v git >/dev/null || \
                        die "Missing git! Install git to support git clone."
                [ -z "$reporev" ] && local _rev="HEAD" && local _depth="--depth=1"
                msg "Creating git snapshot: $pkgname-$_version"
                git clone $_depth --bare $giturl $pkgname-$_version || return 1
                git --git-dir $pkgname-$_version archive \
			--format=$_format \
                        -o $pkgname-$_version.$_format \
                        --prefix=$pkgname-$_version/ $_rev \
                        || return 1
        fi
        # export svn repo and archive
        if [ -n "$svnurl" ]; then
                local _version=${verbase:-0}_svn${_date}
                command -v svn >/dev/null || \
                        die "Missing svn! Install subverion to support svn export."
                [ -n "$reporev" ] && local _rev="-r $reporev"
                msg "Creating svn snapshot: $pkgname-$_version"
                svn co $_rev $svnurl $pkgname-$_version || return 1
                tar zcf $pkgname-$_version.$_format $pkgname-$_version || return 1
        fi
        # upload to defined distfiles url
        if [ -n "$disturl" ]; then
                command -v rsync >/dev/null || \
                        die "Missing rsync! Install rsync to enable automatic uploads."
                msg "Uploading to $disturl"
                rsync --progress -La $pkgname-$_version.$_format \
                        $disturl || return 1
                cd "$startdir"
                # set the pkgver to current date and update checksum
                sed -i -e "s/^pkgver=.*/pkgver=${_version}/" \
                        APKBUILD || return 1
                abuild checksum
                fi
}

usage() {
	echo "$program $program_version"
	cat << EOF
usage: $program [options] [-i PKG] [-P REPODEST] [-p PKGDEST]
              [-s SRCDEST] [cmd] ...
       $program [-c] -n PKGNAME[-PKGVER]
Options:
 -A  Print CARCH and exit
 -c  Enable colored output
 -d  Disable dependency checking
 -f  Force specified cmd, even if they are already done
 -F  Force run as root
 -h  Show this help
 -i  Install PKG after successful build
 -k  Keep built packages, even if APKBUILD or sources are newer
 -m  Disable colors (monochrome)
 -p  Set package destination directory
 -P  Set PKGDEST to REPODEST/<repo>/\$CARCH, where repo is the parents dir name
 -q  Quiet
 -r  Install missing dependencies from system repository (using sudo)
 -R  Recursively build and install missing dependencies (using sudo)
 -s  Set source package destination directory
 -u  Recursively build and upgrade all dependencies (using sudo)

Commands:
  checksum    Generate checksum to be included in APKBUILD
  fetch       Fetch sources to \$SRCDEST and verify checksums
  sanitycheck Basic sanity check of APKBUILD
  verify      Verify checksums
  unpack      Unpack sources to \$srcdir
  prepare     Apply patches
  build       Compile and install package into \$pkgdir
  listpkg     List target packages
  package     Create package in \$PKGDEST
  rootpkg     Run 'package', the split functions and create apks as fakeroot
  clean       Remove temp build and install dirs
  cleanoldpkg Remove binary packages except current version
  cleanpkg    Remove already built binary and source package
  cleancache  Remove downloaded files from \$SRCDEST
  srcpkg      Make a source package
  sourcecheck Check if remote source package exists upstream
  up2date     Compare target and sources dates
  deps        Install packages listed in makedepends and depends
  undeps      Uninstall packages listed in makedepends and depends
  snapshot    Create a \$giturl or \$svnurl snapshot and upload to \$disturl

EOF
	exit 0
}

APKBUILD="${APKBUILD:-./APKBUILD}"
unset force
unset recursive
while getopts "AcdfFhi:kimnp:P:qrRs:u" opt; do
	case $opt in
		'A') echo "$CARCH"; exit 0;;
		'c') enable_colors
		     color_opt="-c";;
		'd') nodeps=1;;
		'f') force="-f";;
		'F') forceroot="-F";;
		'h') usage;;
		'i') install_after="$install_after $OPTARG";;
		'k') keep="-k";;
		'm') disable_colors
		     color_opt="-m";;
		'n') die "Use newapkbuild to create new aports";;
		'p') PKGDEST=$OPTARG;;
		'P') REPODEST=$OPTARG;;
		'q') quiet="-q";;
		'r') install_deps="-r";;
		'R') recursive="-R";;
		's') SRCDEST=$OPTARG;;
		'u') upgrade="-u"
		     recursive="-R";;
	esac
done
shift $(( $OPTIND - 1 ))

# check so we are not root
if [ "$(whoami)" = "root" ] && [ -z "$FAKEROOTKEY" ]; then
	[ -z "$forceroot" ] && die "Do not run abuild as root"
	FAKEROOT=
fi

# find startdir
[ -f "$APKBUILD" ] || die "Could not find $APKBUILD (PWD=$PWD)"
APKBUILD=$(readlink -f "$APKBUILD")

startdir="${APKBUILD%/*}"
srcdir=${srcdir:-"$startdir/src"}
pkgbasedir=${pkgbasedir:-"$startdir/pkg"}

repo=${startdir%/*}
repo=${repo##*/}

SRCDEST=${SRCDEST:-$startdir}
PKGDEST=${PKGDEST:-$startdir}

# set a default CC
: ${CC:=gcc}
export CC

cd "$startdir" || die
. "$APKBUILD"

# If REPODEST is set then it will override the PKGDEST
if [ -n "$REPODEST" ]; then
	PKGDEST="$REPODEST/$repo/$CARCH"
	# for recursive action
	export REPODEST
	abuildrepo="$REPODEST"/$repo
else
	abuildrepo="$abuildrepo_base"/$repo
fi

# if we want build debug package
if [ -n "$DEBUG" ] || subpackage_types_has "dbg"; then
	CFLAGS="$CFLAGS -g"
	options="$options !strip"
fi

# If we are handling a sub package then reset subpackages and install
if [ -n "$subpkgname" ]; then
	origsubpackages="$subpackages"
	subpackages=
fi
pkgdir="$pkgbasedir/$pkgname"
controldir="$pkgbasedir"/.control.${subpkgname:-$pkgname}

trap 'die "Aborted by user"' INT
set_xterm_title "abuild: $pkgname"

if [ -z "$1" ]; then
	set all
fi

while [ $# -gt 0 ]; do
	runpart $1
	shift
done

for i in $install_after; do
	post_add $i
done

cleanup