#!/bin/ash -e

# abuild - build apk packages (light version of makepkg)
# Copyright (c) 2008-2015 Natanael Copa <ncopa@alpinelinux.org>
# Copyright (c) 2016 Timo Teräs <timo.teras@iki.fi>
#
# Distributed under GPL-2.0-only
#

program_version=@VERSION@
sharedir=${ABUILD_SHAREDIR:-@sharedir@}

abuild_path=$(readlink -f $0)
git=$(command -v git) || git=true

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

# defaults
: ${FAKEROOT:="fakeroot"}
: ${SUDO_APK:="abuild-apk"}
: ${APK:="apk"}
: ${ADDUSER:="abuild-adduser"}
: ${ADDGROUP:="abuild-addgroup"}
: ${CC:="gcc"}
: ${CXX:="g++"}
: ${SETFATTR:="setfattr"}

apk_opt_wait="--wait 30"

umask 022

shell_escape() {
	echo \'${1/\'/\'\\\'\'}\'
}

# 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"
}

amove() {
	[ -n "$subpkgdir" ] || return 1

	# store directory
	d="$(pwd -L)"

	cd "$pkgdir"
	local pattern f
	for pattern; do
		for f in ${pattern#/}; do # let shell expand the pattern
			# only create dir if needed
			if [ "${f%/*}" != "$f" ]; then
				mkdir -p "$subpkgdir/${f%/*}"
			fi
			mv -v "$pkgdir"/$f "$subpkgdir/${f%/*}"
			# cleanup
			rmdir -p "$f" 2>/dev/null || rmdir -p "${f%/*}" 2>/dev/null || true
		done
	done

	cd "$d"
}

cross_creating() {
	test "$CHOST" != "$CTARGET" -a -n "$CBUILDROOT"
}

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

want_check() {
	[ -n "$ABUILD_BOOTSTRAP" ] && return 1
	cross_compiling && return 1
	options_has "!check" && return 1
	return 0
}

set_source_date() {
	# dont error out if APKBUILD is not in git
	if ! $git rev-parse --show-toplevel >/dev/null 2>&1; then
		git=true
	fi
	# set time stamp for reproducible builds
	if [ -z "$ABUILD_LAST_COMMIT" ]; then
		export ABUILD_LAST_COMMIT="$(git_last_commit)$(git_dirty)"
	fi
	if [ -z "$SOURCE_DATE_EPOCH" ] && [ "${ABUILD_LAST_COMMIT%-dirty}" = "$ABUILD_LAST_COMMIT" ]; then
		SOURCE_DATE_EPOCH=$(git_last_commit_epoch $ABUILD_LAST_COMMIT)
	fi
	if [ -z "$SOURCE_DATE_EPOCH" ]; then
		SOURCE_DATE_EPOCH=$(date -u "+%s")
	fi
	export SOURCE_DATE_EPOCH
}

default_cleanup_srcdir() {
	if options_has "chmod-clean" && test -d "$srcdir"; then
		chmod -R +w "$srcdir"
	fi
	rm -rf "$srcdir"
}

cleanup_srcdir() {
	default_cleanup_srcdir
}

cleanup() {
	local i=
	[ -z "$subpkgdir" ] && set_xterm_title ""
	if [ -n "$keep_build" ]; then
		return 0
	fi
	for i; do
		case $i in
		bldroot)
			if [ "$BUILD_ROOT" ]; then
				msg "Cleaning up build chroot"
				abuild-rmtemp "$BUILD_ROOT"
			fi;;
		pkgdir) msg "Cleaning up pkgdir"; rm -rf "$pkgbasedir";;
		srcdir) msg "Cleaning up srcdir"; cleanup_srcdir;;
		deps)
			if [ -n "$uninstall_after" ]; then
				msg "Uninstalling dependencies..."
				undeps
			fi
			;;
		esac
	done
}

die() {
	trap - EXIT
	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"
	# give 0 as it is always valid and give the pkgrel
	$APK version --check --quiet 0-r"$pkgrel" || \
		die "$pkgrel is not a valid pkgrel"
	[ -z "$pkgdesc" ] && die "Missing pkgdesc in APKBUILD"
	[ -z "$url" ] && die "Missing url in APKBUILD"
	[ -z "$license" ] && die "Missing license in APKBUILD"
	if [ $(echo "$pkgdesc" | wc -c) -gt 128 ]; then
		die "pkgdesc is too long"
	fi
	is_function package || die "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

	if [ -n "$provider_priority" ] \
		&& ! echo $provider_priority | egrep -q '^[0-9]+$'; then
		die "provider_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 that -dbg comes first
	if subpackages_has "$pkgname-dbg"; then
		set -- $subpackages
		if [ "$1" != "$pkgname-dbg" ]; then
			warning "$pkgname-dbg should be first in subpackages"
		fi
	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

		if source_has "$f"; then
			warning "You should not have \$triggers in source"
			continue
		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"

			# verify that our source does not have git tag version
			# name as tarball (typicallly github)
			if is_remote "$i" && [ "${i#*::}" = "$i" ]; then
				case ${i##*/} in
				v$pkgver.tar.*|$pkgver.tar.*)
					die "source ${i##*/} needs to be renamed to avoid possible collisions"
					;;
				esac
			fi
		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 "$subpackage" ] && spell_error subpackage subpackages
	[ -n "$checkdepend" ] && spell_error checkdepend checkdepends

	check_maintainer || die "Provide a valid RFC822 maintainer address"
	[ $(grep '^# *Maintainer:' "$APKBUILD" | wc -l) -gt 1 ] \
		&& die "More than one maintainer"
	check_license || warning "Please use valid SPDX license identifiers found at: https://spdx.org/licenses"

	check_depends_dev || warning "depends_dev found but no development subpackage found"
	check_secfixes_comment || return 1

	makedepends_has 'g++' && ! options_has toolchain && warning "g++ should not be in makedepends"

	if ! options_has "!check" && [ -n "$REQUIRE_CHECK" ]; then
		(unset check; . "$APKBUILD"; type check >/dev/null 2>&1) || \
			die "Testsuites (abuild check) are required or need to be explicitly disabled!"
	fi

	check_provides || die "provides must not contain $pkgname"

	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=$1; shift
		if ! echo "$src" | ${algo}sum -c; then
			endreturnval=1
			is_remote $origin || continue

			local csum="${src:0:8}"
			local file="$SRCDEST/$(filename_from_uri $origin)"

			echo "Because the remote file above failed the ${algo}sum check it will be renamed."
			echo "Rebuilding will cause it to re-download which in some cases may fix the problem."
			echo "Renaming: ${file##*/} to ${file##*/}.$csum"
			mv "$file" "$file.$csum"
		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
		*::*)
			uri=${uri##*::}
			;;
		esac
		wget --spider -q "$uri" || return 1
	done
	return 0
}

uri_fetch() {
	local uri="$1"
	mkdir -p "$SRCDEST"
	msg "Fetching $uri"
	abuild-fetch -d "$SRCDEST" "$uri"
}

is_remote() {
	case "${1#*::}" in
		http://*|ftp://*|https://*)
			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"
}

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

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 line
	for i in $source; do
		case $i in
		*.initd) line=$(head -n 1 "$srcdir"/$i);;
		*) continue ;;
		esac

		case "$line" in
		*sbin/openrc-run)
			;;
		*sbin/runscript)
			warning "$i is not an openrc #!/sbin/openrc-run"
			;;
		*)	error "$i is not an openrc #!/sbin/openrc-run"
			return 1
			;;
		esac
	done
}

# unpack the sources
default_unpack() {
	local u
	verify || return 1
	initdcheck || return 1
	mkdir -p "$srcdir"
	local gunzip=$(command -v pigz || echo gunzip)
	[ $gunzip = "/usr/bin/pigz" ] && gunzip="$gunzip -d"
	for u in $source; do
		local s
		if is_remote "$u"; then
			s="$SRCDEST/$(filename_from_uri $u)"
		else
			s="$startdir/$u"
		fi
		case "$s" in
			*.tar)
				msg "Unpacking $s..."
				tar -C "$srcdir" -xf "$s" || return 1;;
			*.tar.gz|*.tgz)
				msg "Unpacking $s..."
				$gunzip -c "$s" | tar -C "$srcdir" -x || return 1;;
			*.tar.bz2)
				msg "Unpacking $s..."
				tar -C "$srcdir" -jxf "$s" || return 1;;
			*.tar.lz)
				msg "Unpacking $s..."
				tar -C "$srcdir" --lzip -xf "$s" || return 1;;
			*.tar.lzma)
				msg "Unpacking $s..."
				unlzma -T 0 -c "$s" | tar -C "$srcdir" -x  \
					|| return 1;;
			*.tar.xz)
				msg "Unpacking $s..."
				local threads_opt
				if [ $(readlink -f $(command -v unxz)) != "/bin/busybox" ]; then
					threads_opt="--threads=0"
				fi
				unxz $threads_opt -c "$s" | tar -C "$srcdir" -x || return 1;;
			*.zip)
				msg "Unpacking $s..."
				unzip -n -q "$s" -d "$srcdir" || return 1;;
		esac
	done
}

unpack() {
	default_unpack
}

# cleanup source and package dir
clean() {
	cleanup srcdir
	cleanup pkgdir
}

# 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
}

subpkg_unset() {
	unset subpkgname subpkgsplit subpkgarch
}

subpkg_set() {
	subpkgname=${1%%:*}

	local _splitarch=${1#*:}
	[ "$_splitarch" = "$1" ] && _splitarch=""

	subpkgsplit=${_splitarch%%:*}

	if [ -z "$subpkgsplit" ]; then
		if is_bashcomp_pkg "$subpkgname"; then
			subpkgsplit=bashcomp
		elif is_zshcomp_pkg "$subpkgname"; then
			subpkgsplit=zshcomp
		elif is_fishcomp_pkg "$subpkgname"; then
			subpkgsplit=fishcomp
		else
			subpkgsplit="${subpkgname##*-}"
		fi
	fi

	subpkgarch=${_splitarch#*:}
	if [ "$subpkgarch" = "$_splitarch" -o -z "$subpkgarch" ]; then
		case "$subpkgname" in
		*-doc | *-openrc | *-lang | *-lang-* | *sh-completion) subpkgarch="noarch" ;;
		*) subpkgarch="$pkgarch" ;;
		esac
	fi
}

cleanpkg() {
	local i
	getpkgver || return 1
	msg "Cleaning built packages..."
	rm -f "$REPODEST/$repo/src/$pkgname-$pkgver-r$pkgrel.src.tar.gz"
	for i in $allpackages; do
		subpkg_set "$i"
		rm -f "$REPODEST/$repo/${subpkgarch/noarch/$CARCH}/$subpkgname-$pkgver-r$pkgrel.apk"
	done
	subpkg_unset

	# 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 $allpackages; do
		subpkg_set "$i"
		for j in "$REPODEST"/$repo/*/$subpkgname-[0-9]*.apk ; do
			[ "${j##*/}" = "$subpkgname-$pkgver-r$pkgrel.apk" ] \
				&& continue
			rm -f "$j"
		done
	done
	subpkg_unset
	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() {
	find . -name config.sub | (local changed=false; while read f; do
		if ! ./$f riscv64-alpine-linux-musl 2>/dev/null; then
			msg "Updating $f"
			cp "$sharedir"/${f##*/} "$f" || return 1
			changed=true
		else
			msg "No update needed for $f"
		fi
	done; $changed)
}

# helper to update config.guess to a recent version
update_config_guess() {
	find . -name config.guess | (local changed=false; while read f; do
		if grep -q aarch64 "$f" && grep -q ppc64le "$f" && grep -q riscv64 "$f"; then
			msg "No update needed for $f"
		else
			msg "Updating $f"
			cp "$sharedir"/${f##*/} "$f" || return 1
			changed=true
		fi
	done; $changed)
}

runpart() {
	local part=$1
	[ -n "$DEBUG" ] && msg "$part"
	trap "die '$part failed'" EXIT
	if [ -d "$builddir" ]; then
		case "$part" in
			prepare|build|package|check)
				cd "$builddir";;
		esac
	fi
	$part
	trap - EXIT
}

# 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
}

have_patches() {
	local i
	for i in $source; do
		case ${i%::*} in
			*.patch|*.patch.gz|*.patch.xz) return 0;;
		esac
	done
	return 1
}

default_prepare() {
	local i failed=
	[ -n "$builddir" -a -d "$builddir" ] && cd "$builddir"
	if ! have_patches; then
		return 0
	fi
	[ -d "$builddir" ] || { error "Is \$builddir set correctly?"; return 1; }
	for i in $source; do
		case ${i%::*} in
			*.patch)
				msg "${i%::*}"
				patch ${patch_args:--p1} -i "$srcdir/$(filename_from_uri $i)" || failed="$failed $i"
				;;
			*.patch.gz)
				msg "${i%::*}"
				gunzip -c "$srcdir/$(filename_from_uri $i)" | patch ${patch_args:--p1} || failed="$failed $i"
				;;
			*.patch.xz)
				msg "${i%::*}"
				unxz -c "$srcdir/$(filename_from_uri $i)" | patch ${patch_args:--p1} || failed="$failed $i"
				;;
		esac
	done
	if [ -z "$failed" ]; then
		return 0
	fi
	error "The following patches failed to apply:"
	for i in $failed; do
		printf "  %s\n" "$i"
	done
	return 1
}

prepare() {
	default_prepare
}

build() {
	:
}

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

postcheck() {
	local dir="$1" name="$2" i= e=0
	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 "$i" ]; then
				error "Packages must not put anything under /srv, /usr/local or /opt"
				e=1
			fi
		done
		if [ -d "$dir"/usr/var ]; then
			error "Found /usr/var, localstatedir is most likely wrong"
			e=1
		fi
	fi

	# Alpine Linux as a musl libc distro does not use /lib64 or /usr/lib64 under
	# any circunstance, packages installing to it are 100% sure a packaging error
	# except when we are doing GNU Libc compatibility which should be rare enough
	# to warrant a lib64 check
	if ! options_has "lib64"; then
		if [ -e "$dir"/lib64 ]; then
			error "Packages must not put anything under /lib64, use /lib instead"
			e=1
		elif [ -e "$dir"/usr/lib64 ]; then
			error "Packages must not put anything under /usr/lib64, use /usr/lib instead"
			e=1
		fi
	fi

	# remove *.la files if libtool is not set
	if ! options_has "libtool"; then
		find "$dir" -name '*.la' -type f -delete
	fi

	# look for /usr/lib/charset.alias
	if [ -e "$dir"/usr/lib/charset.alias ] \
			&& ! options_has "charset.alias"; then
		error "Found /usr/lib/charset.alias"
		e=1
	fi
	# look for /etc/init.d and /etc/conf.d
	if [ -e "$dir"/etc/init.d -o -e "$dir"/etc/conf.d ] \
			&& ! is_openrc_pkg "$name"; then
		warning "Found OpenRC directory (/etc/conf.d or /etc/init.d) but name doesn't end with -openrc"
	fi
	# look for /usr/share/doc
	if [ -e "$dir"/usr/share/doc ] \
			&& ! is_doc_pkg "$name"; then
		warning "Found /usr/share/doc but package name doesn't end with -doc"
	fi
	# look for /usr/share/man
	if [ -e "$dir"/usr/share/man ]; then
		if ! is_doc_pkg "$name"; then
			warning "Found /usr/share/man but package name doesn't end with -doc"
		fi
		# check for uncompressed man pages
		i=$(find "$dir"/usr/share/man -name '*.[0-8]' -type f | sed "s|^$dir|\t|")
		if [ -n "$i" ]; then
			error "Found uncompressed man pages:"
			echo "$i"
			e=1
		fi
	fi
	# check that we don't have any files names with newline
	i=$(find "$dir" -name $'*\n*')
	if [ -n "$i" ]; then
		error "Found filenames with newline:"
		echo "$i"
		e=1
	fi
	# check directory permissions
	i=$(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 "$i"
		e=1
	fi
	# test suid bit on executable
	if ! options_has "suid"; then
		i=$(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"
			e=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"
			e=1
		fi
	fi
	return $e
}

pre_split() {
	if [ -z "$subpkgname" ]; then
		return 0
	fi
	# the subpackages should not inherit these from main package
	provides=""
	install_if=""
}

prepare_subpackages() {
	local i
	cd "$startdir"
	for i in $subpackages; do
		# call abuild recursively, setting subpkg{dir,name}
		( subpkg_set "$i"; msg "Running split function $subpkgsplit..."; \
		  subpkgdir="$pkgbasedir/$subpkgname" subpkgname="$subpkgname" subpkgarch="$subpkgarch" \
		  "$abuild_path" $forceroot pre_split $subpkgsplit prepare_package \
			&& postcheck "$pkgbasedir/$subpkgname" "$subpkgname" ) || return 1
	done
	postcheck "$pkgdir" "$pkgname" || return 1
	# post check for /usr/share/locale
	if [ -d "$pkgdir"/usr/share/locale ]; then
		warning "Found /usr/share/locale"
		warning2 "Maybe add \$pkgname-lang to subpackages?"
	fi
	# post check for shell completions
	if [ -d "$pkgdir"/usr/share/bash-completion ]; then
		warning "Found /usr/share/bash-completion"
		warning2 "Add \$pkgname-bash-completion to subpackages"
	fi
	if [ -d "$pkgdir"/usr/share/zsh/site-functions ]; then
		warning "Found /usr/share/zsh/site-functions"
		warning2 "Add \$pkgname-zsh-completion to subpackages"
	fi
	if [ -d "$pkgdir"/usr/share/fish/completions ]; then
		warning "Found /usr/share/fish/completions"
		warning2 "Add \$pkgname-fish-completion to subpackages"
	fi
}

default_lang() {
	pkgdesc="Languages for package $pkgname"
	install_if="$pkgname=$pkgver-r$pkgrel lang"

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

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

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

# date of last commit
git_last_commit_epoch() {
	$git log -1 --format=%cd --date=unix $1 -- "$startdir"
}

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

check_maintainer() {
	get_maintainer
	if [ -z "$maintainer" ]; then
		warning "No maintainer"
	else
		# try to check for a valid rfc822 address
		case "$maintainer" in
			*[A-Za-z0-9]*\ \<*@*.*\>) ;;
			*) return 1 ;;
		esac
	fi
}

check_license() {
	local ret=0
	local license_list=/usr/share/spdx/license.lst
	local exclude="AND OR WITH ( )"
	if options_has "!spdx" || ! [ -f "$license_list" ]; then
		return 0
	fi
	local i; for i in $license; do
		list_has "$i" $exclude && continue
		if ! grep -q -x -F "$i" "$license_list"; then
			ret=1
			warning "\"$i\" is not a known license"
		fi
	done
	return $ret
}

check_secfixes_comment() {
	local c=$(sed -E -n -e '/^# secfixes:/,/(^[^#]|^$)/p' $APKBUILD | grep '^#')
	local invalid=$(echo "$c" \
		| grep -v -E '(^# secfixes:|^#  +- [A-Z0-9-]+|^#   [0-9]+.*:$|^#$)')
	if [ -z "$invalid" ]; then
		return 0
	fi

	# check if there are tabs
	if echo "$invalid" | grep -q $'\t'; then
		error "secfixes comment must not have tabs:"
		echo "$c" | grep $'\t' >&2
		return 1
	fi

	error "secfixes comment is not valid:"
	echo "$invalid" >&2
	return 1
}

check_depends_dev() {
	if [ -z "$depends_dev" ]; then
		return 0
	fi
	local i
	for i in $pkgname $subpackages; do
		case "${i%%:*}" in
		*-dev) return 0 ;;
		esac
	done
	return 1
}

check_provides() {
	local i
	for i in $provides; do
		if [ "${i%%[<>=]*}" = "$pkgname" ]; then
			return 1
		fi
	done
	return 0
}

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 "$controldir"
	local builddate="$SOURCE_DATE_EPOCH"

	# Fix package size on several filesystems
	case "$(stat -f -c "%T" .)" in
	btrfs|ecryptfs|zfs)
		sync;;
	esac

	local size=$(du -sk | awk '{print $1 * 1024}')

	if [ "$arch" != "$apkbuild_arch" ]; then
		local msg="Split function set arch=\"$arch\" for $name, use subpackages=pkg:split:arch format instead"
		[ "$arch" != "noarch" ] && die "$msg"
		warning "$msg"
		subpkgarch="$arch"
	fi

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

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

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

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

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

	echo "license = $license" >> "$pkginfo"
	for i in $replaces; do
		echo "replaces = $i" >> "$pkginfo"
	done
	for i in $deps; do
		if [ "$i" != "$name" ]; then
			echo "depend = $i" >> "$pkginfo"
		fi
	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_trace_rpaths() {
	local dir=${subpkgdir:-$pkgdir}
	local etype= soname= file= sover=
	[ "${subpkgarch:-$pkgarch}" = "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
}

# search for broken symlinks so we later can pull in proper depends
prepare_symlinks() {
	local target
	local dir="${subpkgdir:-$pkgdir}"
	options_has "!tracedeps" && return 0
	cd "$dir" || return 1
	find -type l | while read symlink; do
		target=$(readlink "$symlink")
		if ! [ -e "$dir$(normalize_target_path "$target" "$symlink")" ]; then
			echo "$symlink $target" >> "$controldir"/.symlinks
		fi
	done
}

prepare_pkgconfig_provides() {
	local dir="${subpkgdir:-$pkgdir}"
	options_has "!tracedeps" && return 0
	cd "$dir" || return 1
	for i in usr/lib/pkgconfig/*.pc usr/share/pkgconfig/*.pc; do
		if ! [ -e "$i" ]; then
			continue
		fi
		local f=${i##*/}
		local v=$(PKG_CONFIG_PATH="$dir"/usr/lib/pkgconfig:"$dir"/usr/share/pkgconfig \
			PKG_CONFIG_MAXIMUM_TRAVERSE_DEPTH=1 pkg-config \
			--modversion ${f%.pc} | sed -E -e 's/-(alpha|beta|rc|pre)/_\1/')
		$APK version --check --quiet $v || die "$i: pkgconf version $v is invalid"
		echo "$pcprefix${f%.pc}=${v:-0}" >> "$controldir"/.provides-pc
	done
}

prepare_command_provides() {
	local dir="${subpkgdir:-$pkgdir}"
	options_has "!tracedeps" && return 0
	cd "$dir" || return 1
	for i in bin/* sbin/* usr/bin/* usr/sbin/*; do
		if ! [ -x "$i" ]; then
			continue
		fi
		local f=${i##*/}
		echo $f >> "$controldir"/.provides-command
	done
}

# 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 "${1%-dev}" != "$1"
}

# returns true if this is the -static package
is_static_pkg() {
	test "${1%-static}" != "$1"
}

# returns true if this is the -doc package
is_doc_pkg() {
	test "${1%-doc}" != "$1"
}

# returns true if this is the -openrc package
is_openrc_pkg() {
	test "${1%-openrc}" != "$1"
}

# returns true if this is the -bash-completion package
is_bashcomp_pkg() {
	test "${1%-bash-completion}" != "$1"
}

# returns true if this is the -zsh-completion package
is_zshcomp_pkg() {
	test "${1%-zsh-completion}" != "$1"
}

# returns true if this is the -fish-completion package
is_fishcomp_pkg() {
	test "${1%-fish-completion}" != "$1"
}

# check that noarch is set if needed
archcheck() {
	options_has "!archcheck" && return 0
	if dir_has_arch_binaries "${subpkgdir:-$pkgdir}"; then
		[ "${subpkgarch:-$pkgarch}" != "noarch" ] && return 0
		error "Arch specific binaries found so arch must not be set to \"noarch\""
		return 1
	elif [ "${subpkgarch:-$pkgarch}" != "noarch" ] && ! is_dev_pkg "$subpkgname" && ! is_static_pkg "$subpkgname"; 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_trace_rpaths \
		&& prepare_symlinks \
		&& prepare_pkgconfig_provides \
		&& prepare_command_provides \
		|| 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_prefixed_so() {
	[ -n "$sonameprefix" ] && grep -q -w "^$sonameprefix$1" \
		"$pkgbasedir"/.control.*/.provides-so 2>/dev/null
}

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

subpkg_provides_prefixed_pc() {
	[ -n "$pcprefix" ] && grep -q -w "^$pcprefix$1" \
		"$pkgbasedir"/.control.*/.provides-pc 2>/dev/null
}

subpkg_provides_pc() {
	grep -q -w "^${1%%[<>=]*}" "$pkgbasedir"/.control.*/.provides-pc \
		2>/dev/null
}

trace_apk_deps() {
	local name="$1"
	local dir="$2"
	local parch="$3"
	local i= found= autodeps= deppkgs= missing=
	local apkroot=

	case "$parch" in
	$CBUILD_ARCH) ;;
	$CARCH | $CTARGET_ARCH) apkroot="--root $CBUILDROOT --arch $CTARGET_ARCH" ;;
	esac

	msg "Tracing dependencies..."
	# add pkgconfig if usr/lib/pkgconfig is found
	if [ -d "$pkgbasedir"/$name/usr/lib/pkgconfig ] || [ -d "$pkgbasedir"/$name/usr/share/pkgconfig ] \
			&& ! grep -q '^depend = pkgconfig' "$dir"/.PKGINFO; then
		autodeps="$autodeps pkgconfig"
	fi

	# special case for libpthread: we need depend on libgcc
	if [ "$CLIBC" = "uclibc" ] && [ -f "$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 "^$sonameprefix$i" "$dir"/.provides-so 2>/dev/null && continue

		if subpkg_provides_prefixed_so "$i"; then
			autodeps="$autodeps so:$sonameprefix$i"
		elif subpkg_provides_so "$i" \
				|| $APK $apkroot info --quiet --installed "so:$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 $apkroot 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

	# symlink targets
	for i in $(sort -u "$dir"/.symlinks-needs 2>/dev/null); do
		autodeps="$autodeps $i"
	done

	# pkg-config depends
	for i in $(sort -u "$dir"/.needs-pc 2>/dev/null); do
		# first check if its provided by same apkbuild
		grep -q -w "^$pcprefix$i" "$dir"/.provides-pc 2>/dev/null && continue

		if subpkg_provides_prefixed_pc "$i"; then
			autodeps="$autodeps pc:$pcprefix$i"
		elif subpkg_provides_pc "$i" \
				|| $APK $apkroot info --quiet --installed "pc:$i"; then
			local provider=$($APK $apkroot search --quiet "pc:$i")
			if list_has "$provider" $depends_dev; then
				warning "$provider should be removed from depends_dev"
			fi
			autodeps="$autodeps pc:$i"
		else
			warning "Could not find any provider for pc:$i"
			for d in share lib; do
				local pcfile=/usr/$d/pkgconfig/"${i%%[<>=]*}".pc
				if [ -e "$pcfile" ]; then
					local owner=$($APK $apkroot info --quiet --who-owns $pcfile)
					warning "${owner:-package providing $pcfile} needs to be rebuilt"
				fi
			done
		fi
	done

	echo "# automatically detected:" >> "$dir"/.PKGINFO
	if [ -f "$dir"/.provides-so ]; then
		sed 's/^\(.*\) \([0-9].*\)/provides = so:\1=\2/' \
			"$dir"/.provides-so | sort -u \
			>> "$dir"/.PKGINFO
	fi
	if [ -f "$dir"/.provides-pc ]; then
		sed 's/^/provides = pc:/' "$dir"/.provides-pc | sort -u \
			>> "$dir"/.PKGINFO
	fi
	if [ -f "$dir"/.provides-command ]; then
		sed 's/^/provides = cmd:/' "$dir"/.provides-command | sort -u \
			>> "$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=

	if [ "${subpkgarch:-$pkgarch}" = "noarch" ]; then
		return 0
	fi

	# 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" $somask && continue
		echo "$sonameprefix$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 $2}'  \
		| sed 's:,:\n:g' | sort -u \
	| while read soname; do
		# only add files that are not self provided
		grep -q -w "^$sonameprefix$soname" "$controldir"/.provides-so \
			|| list_has "$soname" $somask \
			|| echo $soname
	done > "$controldir"/.needs-so
}

# normalize a symlink target path (1st arg)
# Converts a relative path to absolute with respect to the symlink
# path (2nd arg).
normalize_target_path() {
	local path=$1
	[ "${path:0:1}" = / ] || path=$(dirname "$2")/$path

	local oifs="$IFS" pathstr= i=
	IFS='/'
	set -- $path
	for i; do
		case "$i" in
		"."|"") continue;;
		"..")   pathstr="${pathstr%%/${pathstr##*/}}";;
		*) pathstr="${pathstr}/$i";;
		esac
	done
	echo "$pathstr"
}

# find which package provides file that symlink points to
scan_symlink_targets() {
	local name="$1" dir="$2" datadir="$3"
	local symfile= targetpath=
	cd "$datadir"
	for symfile in "$pkgbasedir"/.control.*/.symlinks; do
		local d="${symfile%/.symlinks}"
		if ! [ -e "$symfile" ] || [ "$d" = "$dir" ]; then
			continue
		fi

		while read symlink target; do
			targetpath=$datadir$(normalize_target_path "$target" "$symlink")
			if [ -e "$targetpath" ] || [ -L "$targetpath" ]; then
				echo "$name=$pkgver-r$pkgrel" \
					>> "$d"/.symlinks-needs
			fi
		done < "$symfile"
	done
}

#find pkg-config dependencies
scan_pkgconfig_depends() {
	local provides_pc="$1" controldir= name= datadir=
	[ -e "$provides_pc" ] || return 0
	controldir="${provides_pc%/*}"
	name="$(pkginfo_val pkgname "$controldir"/.PKGINFO)"
	datadir="$pkgbasedir"/$name
	for i in $(sort -u "$provides_pc"); do
		PKG_CONFIG_PATH="$datadir"/usr/lib/pkgconfig:"$datadir"/usr/share/pkgconfig \
				pkg-config \
				--print-requires \
				--print-requires-private ${i%=*} \
				| sed -E 's/\s*([<>=]+)\s*/\1/' \
				| while read pc; do
			# only add files that are not self provided
			if ! grep -q -w "^${pc%%[<>=]*}" "$provides_pc"; then
				echo "$pc" >> "$controldir"/.needs-pc
			fi
		done
	done
}

# 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 && $1 > 0; i--)
			y = $1 / (2^(10*i))
		printf("%.1f %s\n", y, type[i+2]) }'
}

create_apks() {
	local file= dir= name= ver= apk= datadir= size=
	local gzip=$(command -v pigz || echo gzip)
	getpkgver || return 1
	rmdir "$pkgdir"/usr/lib \
		"$pkgdir"/usr/bin \
		"$pkgdir"/usr/share \
		"$pkgdir"/usr \
		"$pkgdir"/etc/ \
		2>/dev/null || :
	if ! 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" "$datadir"
			scan_symlink_targets "$name" "$dir" "$datadir"
		done
		for file in "$pkgbasedir"/.control.*/.provides-pc; do
			scan_pkgconfig_depends "$file"
		done
	fi

	for file in "$pkgbasedir"/.control.*/.PKGINFO; do
		local dir="${file%/.PKGINFO}"
		local name=$(pkginfo_val pkgname $file)
		local ver=$(pkginfo_val pkgver $file)
		local size=$(pkginfo_val size $file | human_size)
		local apk=$name-$ver.apk
		local datadir="$pkgbasedir"/$name
		local subpkgname=$name
		local subpkgarch=$(pkginfo_val arch $file)

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

		# normalize timestamps
		find "$@" -exec touch -h -d "@$SOURCE_DATE_EPOCH" {} +

		# explicitly sort package content
		find "$@" -print0 | LC_ALL=C sort -z | tar --xattrs \
			--format=posix \
			--pax-option=exthdr.name=%d/PaxHeaders/%f,atime:=0,ctime:=0 \
			--mtime="@${SOURCE_DATE_EPOCH}" \
			--no-recursion --null -T - \
			-f - -c | abuild-tar --hash | $gzip -n -9 >"$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
		touch -h -d "@$SOURCE_DATE_EPOCH" "$dir"/.PKGINFO

		# control.tar.gz
		cd "$dir"
		tar \
			--format=posix \
			--pax-option=exthdr.name=%d/PaxHeaders/%f,atime:=0,ctime:=0 \
			--mtime="@${SOURCE_DATE_EPOCH}" \
			-f - -c $(cat "$dir"/.metafiles) | abuild-tar --cut \
			| $gzip -n -9 > control.tar.gz
		abuild-sign -q control.tar.gz || exit 1

		msg "Create $apk"
		mkdir -p "$REPODEST"/$repo/${subpkgarch/noarch/$CARCH}
		cat control.tar.gz data.tar.gz > "$REPODEST"/$repo/${subpkgarch/noarch/$CARCH}/$apk
		)
	done
}

build_abuildrepo() {
	local part _check=check
	if options_has "checkroot"; then
		_check=check_fakeroot
	fi
	if ! want_check; then
		_check=true
	fi
	if ! apk_up2date || [ -n "$force" ]; then
		# check early if we have abuild key
		abuild-sign --installed
		logcmd "building $repo/$pkgname-$pkgver-r$pkgrel"
		local _starttime=$(date --utc +%s)
		msg "Building $repo/$pkgname $pkgver-r$pkgrel (using $program $program_version) started $(date -R)"

		# make sure SOURCE_DATE_EPOCH is set
		set_source_date

		for part in sanitycheck builddeps clean fetch unpack prepare mkusers build \
				$_check rootpkg; do
			runpart $part
		done
		local _endtime=$(date --utc +%s)
		local _difftime=$((_endtime - _starttime))
		msg "Build complete at $(date -R) elapsed time $((_difftime/3600))h $((_difftime/60%60))m $((_difftime%60))s"
		cleanup $CLEANUP
	fi
	update_abuildrepo_index
}

update_abuildrepo_index() {
	local i allarch=""
	for i in $allpackages; do
		subpkg_set "$i"
		##NOARCH: These packages are really in $CARCH and do not need their
		# own repository. --rewrite-arch is used below to make sure the index
		# thinks they are for $CARCH and apk-tools will fetch them from
		# correct URL path. Remainder of the script uses ${subpkgarch/noarch/$CARCH}
		# when expanding to the target repository path.
		[ "$subpkgarch" = "noarch" ] && subpkgarch="$CARCH"
		list_has "$subpkgarch" "$allarch" || allarch="$allarch $subpkgarch"
	done
	subpkg_unset

	if [ -z "$DESCRIPTION" ]; then
		DESCRIPTION="$repo $(cd $startdir && $git describe 2>/dev/null || true)"
	fi

	local oldpwd="$PWD"
	for i in $allarch; do
		cd "$REPODEST/$repo/$i"
		local index=$i/APKINDEX.tar.gz

		msg "Updating the $repo/$i repository index..."
		local sign=".SIGN.RSA.${SIGN_PUBLIC_KEY##*/}"
		local oldindex=
		if [ -f APKINDEX.tar.gz ]; then
			oldindex="--index APKINDEX.tar.gz"
		fi
		( $APK index $ABUILD_APK_INDEX_OPTS --quiet $oldindex --output APKINDEX.tar.gz.$$ \
			--description "$DESCRIPTION" --rewrite-arch $i *.apk && \
		  msg "Signing the index..." && \
		  abuild-sign -q APKINDEX.tar.gz.$$ && \
		  chmod 644 APKINDEX.tar.gz.$$ && \
		  mv APKINDEX.tar.gz.$$ APKINDEX.tar.gz \
		) || (rm -f APKINDEX.tar.gz.$$ ; die "Failed to create index")
	done
	cd "$oldpwd"
}

# predefined function check
default_check() {
	warning "APKBUILD does not run any tests!"
	msg2 "Alpine policy will soon require that packages have any relevant testsuites run during the build process."
	msg2 "To fix, either define a check() function, or declare !check in \$options to indicate the package does not have a testsuite."
}

check() {
	default_check
}

# predefined splitfunc doc
default_doc() {
	local gzip=$(command -v pigz || echo gzip)
	depends="$depends_doc"
	pkgdesc="$pkgdesc (documentation)"
	install_if="docs $pkgname=$pkgver-r$pkgrel"

	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
	local mandir="$subpkgdir"/usr/share/man
	[ -d "$mandir" ] && find "$mandir" -type l \
		-a \( -name \*.[0-8n] -o -name \*.[0-8][a-z]* \) \
		-a \! \( -name '*.gz' -o -name '*.bz2' -o -name '*.xz' \) \
		| while read symlink; do

		ln -s $(readlink $symlink).gz "$symlink".gz
		rm -f "$symlink"
	done
	[ -d "$mandir" ] && find "$mandir" -type f \
		-a \( -name \*.[0-8n] -o -name \*.[0-8][a-z]* \) \
		-a \! \( -name '*.gz' -o -name '*.bz2' -o -name '*.xz' \) \
		-exec stat -c "%i %n" \{\} \+ | while read inode name; do

		# Skip hardlinks removed in last iteration.
		[ -f "$name" ] || continue

		local islink=0
		find "$mandir" -type f -links +1 \
			-a \( -name \*.[0-8n] -o -name \*.[0-8][a-z]* \) \
			-a \! \( -name '*.gz' -o -name '*.bz2' -o -name '*.xz' \) \
			-exec stat -c "%i %n" \{\} \+ | while read linode lname; do
			if [ "$linode" = "$inode" -a "$lname" != "$name" ]; then
				islink=1
				rm -f "$lname"
				ln -s "${name##*/}".gz "$lname".gz
			fi
		done

		[ $islink -eq 0 ] && $gzip -n -9 "$name"
	done

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

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

doc() {
	default_doc
}

# predefined splitfunc dbg
default_dbg() {
	local f
	pkgdesc="$pkgdesc (debug symbols)"

	scanelf -R "$pkgdir" | grep ET_DYN | sed "s:$pkgdir\/::g" | sed "s:ET_DYN ::g" | while read f; do
		local ddbg_srcdir=$(dirname "$pkgdir/$f")
		local ddbg_srcfile=$(basename "$pkgdir/$f")
		local ddbg_dstdir=$(dirname "$subpkgdir/usr/lib/debug/$f.debug")
		local ddbg_dstfile=$(basename "$subpkgdir/usr/lib/debug/$f.debug")
		mkdir -p "$ddbg_dstdir"

		cd "$ddbg_srcdir"
		local xattr=$(getfattr --match="" --dump "${ddbg_srcfile}")
		${CROSS_COMPILE}objcopy --only-keep-debug "$ddbg_srcfile" "$ddbg_dstfile"
		${CROSS_COMPILE}objcopy --add-gnu-debuglink="$ddbg_dstfile" "$ddbg_srcdir/$ddbg_srcfile"
		mv "$ddbg_dstfile" "$ddbg_dstdir"
		${CROSS_COMPILE}strip "$ddbg_srcfile"
		if [ -n "$xattr" ]; then
			echo "$xattr" | "$SETFATTR" --restore=-
		fi
	done
	return 0
}

dbg() {
	default_dbg
}

# predefined splitfunc dev
default_dev() {
	local i= j=
	depends="$depends_dev"
	pkgdesc="$pkgdesc (development files)"

	cd "$pkgdir" || return 0
	local libdirs=usr/
	[ -d lib/ ] && libdirs="lib/ $libdirs"
	for i in usr/include usr/lib/pkgconfig usr/share/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 \
			usr/lib/glade/modules usr/share/glade/catalogs \
			$(find . -name include -type d) \
			$(subpackage_types_has static || find $libdirs \
				-name '*.a' 2>/dev/null) \
			$(find $libdirs -name '*.[cho]' \
				-o -name '*.prl' 2>/dev/null); do
		if [ -e "$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 static
default_static() {
	local i= devpkg

	# search for -dev package matching our prefix
	if [ -z "$depends_static" ]; then
		devpkg="${subpkgname%-libs-static}"
		devpkg="${devpkg%-static}"
		devpkg="$devpkg-dev"
		if subpackages_has "$devpkg"; then
			depends_static="$devpkg"
		fi
	fi

	depends="$depends_static"
	pkgdesc="$pkgdesc (static library)"

	cd "$pkgdir" || return 0
	local libdirs=usr/lib
	[ -d lib/ ] && libdirs="lib/ $libdirs"

	# move *.a static library
	for i in $(find $libdir -name '*.a'); do
		mkdir -p "$subpkgdir"/"${i%/*}"
		mv "$i" "$subpkgdir/$i" || return 1
	done
	return 0
}

static() {
	default_static
}

# predefined splitfunc libs
default_libs() {
	depends="$depends_libs"
	pkgdesc="$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
}

# predefined splitfunc openrc
default_openrc() {
	depends="$depends_openrc"
	pkgdesc="$pkgdesc (OpenRC init scripts)"
	install_if="openrc ${subpkgname%-openrc}=$pkgver-r$pkgrel"
	local dir file
	for dir in conf.d init.d; do
		if [ -d "$pkgdir/etc/$dir" ]; then
			mkdir -p "$subpkgdir"/etc
			mv "$pkgdir/etc/$dir" "$subpkgdir"/etc/
		fi
	done
	return 0
}

openrc() {
	default_openrc
}

default_bashcomp() {
	depends=""
	pkgdesc="Bash completions for $pkgname"
	install_if="$pkgname=$pkgver-r$pkgrel bash-completion"

	cd "$pkgdir" || return 0
	amove usr/share/bash-completion/completions
}

bashcomp() {
	default_bashcomp
}

default_zshcomp() {
	depends=""
	pkgdesc="Zsh completions for $pkgname"
	install_if="$pkgname=$pkgver-r$pkgrel zsh"

	amove usr/share/zsh/site-functions
}

zshcomp() {
	default_zshcomp
}

default_fishcomp() {
	depends=""
	pkgdesc="Fish completions for $pkgname"
	install_if="$pkgname=$pkgver-r$pkgrel fish"

	cd "$pkgdir" || return 0
	amove usr/share/fish/completions
}

fishcomp() {
	default_fishcomp
}

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

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

# wrap check() with fakeroot
check_fakeroot() {
	cd "$startdir"
	[ -n "$FAKEROOT" ] && msg "Entering fakeroot..."
	do_fakeroot "$abuild_path" $forceroot $color_opt $keep_build check
}

# build and package in fakeroot
rootpkg() {
	cd "$startdir"
	rm -rf "$pkgdir"
	set_source_date
	[ -n "$FAKEROOT" ] && msg "Entering fakeroot..."

	do_fakeroot "$abuild_path" $forceroot $color_opt $keep_build \
		package \
		prepare_subpackages \
		prepare_language_packs \
		prepare_package \
		create_apks
}

srcpkg() {
	echo "Ensuring source is fetched"
	fetch
	getpkgver || return 1
	local p="$pkgname-$pkgver-$pkgrel"
	local prefix="${startdir##*/}"
	local i files="$prefix/APKBUILD"
	for i in $source; do
		echo "Packaging source file: $i"
		if [ ! -e $(filename_from_uri $i) ]; then
			cp $srcdir/$(filename_from_uri $i) $(filename_from_uri $i)
		fi
		files="$files $prefix/$(filename_from_uri $i)"
	done

	for i in $install; do
		echo "Packaging install file: $i"
		files="$files $prefix/$i"
	done

	for i in $triggers; do
		local f=${i%=*}
		echo "Packaging trigger file: $f"
		files="$files $prefix/$f"
	done

	mkdir -p "$REPODEST/src"
	msg "Creating source package $p.src.tar.gz..."
	(cd .. && tar -zcf "$REPODEST/src/$p.src.tar.gz" $files)
}

# return true if arch is supported or noarch
check_arch() {
	local ret=1
	local i
	for i in $arch; do
		case $i in
		all | noarch) ret=0 ;;
		"$CARCH") ret=0 ;;
		"!$CARCH") return 1 ;;
		esac
	done
	return $ret
}

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

# check if package is up to date
apk_up2date() {
	getpkgver || return 1

	local i s
	for i in $allpackages; do
		subpkg_set "$i"
		if [ ! -f "$REPODEST/$repo/${subpkgarch/noarch/$CARCH}/$subpkgname-$pkgver-r$pkgrel.apk" ]; then
			subpkg_unset
			return 1
		fi
	done
	subpkg_unset
	[ -n "$keep" ] && return 0

	cd "$startdir"
	for i in $source APKBUILD; do
		if is_remote "$i"; then
			s="$SRCDEST/$(filename_from_uri $i)"
		else
			s="$startdir/${i##*/}"
		fi
		if [ "$s" -nt "$REPODEST/$repo/${pkgarch/noarch/$CARCH}/$pkgname-$pkgver-r$pkgrel.apk" ]; then
			return 1
		fi
	done
	return 0
}

abuildindex_up2date() {
	local i
	getpkgver || return 1

	for i in $allpackages; do
		subpkg_set "$i"
		local dir="$REPODEST"/$repo/${subpkgarch/noarch/$CARCH}
		local idx="$dir"/APKINDEX.tar.gz
		local file="$dir"/$subpkgname-$pkgver-r$pkgrel.apk

		# if any file is missing or .apk is newer then index
		# the index needs to be updated
		if [ ! -f "$idx" -o ! -f "$file" -o "$file" -nt "$idx" ]; then
			subpkg_unset
			return 1
		fi
	done
	subpkg_unset

	return 0
}

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

calcdeps() {
	builddeps=
	hostdeps=

	if cross_compiling && [ -n "$makedepends_build" -o -n "$makedepends_host" ]; then
		for i in $EXTRADEPENDS_BUILD $1 $makedepends_build; do
			list_has $i $hostdeps && continue
			builddeps="$builddeps $i"
		done
		for i in $EXTRADEPENDS_HOST $EXTRADEPENDS_TARGET $makedepends_host; do
			[ "$pkgname" = "${i%%[<>=]*}" ] && continue
			list_has $i $hostdeps && continue
			subpackages_has ${i%%[<>=]*} || hostdeps="$hostdeps $i"
		done
	else
		[ -z "$makedepends" ] && makedepends="$makedepends_build $makedepends_host"
		want_check && makedepends="$makedepends $checkdepends"
		for i in $EXTRADEPENDS_BUILD $EXTRADEPENDS_HOST $1 $depends $makedepends; do
			[ "$pkgname" = "${i%%[<>=]*}" ] && continue
			list_has $i $builddeps && continue
			subpackages_has ${i%%[<>=]*} || builddeps="$builddeps $i"
		done
		hostdeps="$EXTRADEPENDS_TARGET"
	fi
}

get_missing_deps() {
	local cmd="$APK info --quiet --installed $1"
	shift

	while [ "$1" ]; do
		local cp=${1#\!}
		if [ $cp != $1 ]; then
			if $cmd $cp; then
				error "Conflicting package installed: $cp"
				return 1
			fi
		elif ! $cmd $1; then
			echo $1
		fi
		shift
	done
}

apk_add_makedeps() {
	local prefix=$1
	shift

	local repo_args="--repository $(shell_escape "$REPODEST/$repo")"
	[ -s "$repo_template" ] && repo_args=$(while read r; do
		echo --repository "$(shell_escape "$REPODEST/${r##*/}")"
	done) < "$repo_template"

	eval $SUDO_APK add $apk_opt_wait $repo_args \
		--virtual .${prefix}depends-$pkgname "\$@" || return
}

# build and install dependencies
builddeps() {
	local pkg= i= BUILD_BASE=
	[ -n "$nodeps" ] && return 0

	msg "Analyzing dependencies..."
	case "$BOOTSTRAP" in
	no*)	BUILD_BASE="";;
	*)	if cross_creating || cross_compiling; then
			BUILD_BASE="build-base-$CTARGET_ARCH"
		else
			BUILD_BASE="build-base"
		fi
	esac
	calcdeps "$BUILD_BASE"

	# find which deps are missing
	local mbd mhd missing
	mbd=$(get_missing_deps "" $builddeps) || return 1
	mhd=$(get_missing_deps "--root $CBUILDROOT --arch $CTARGET_ARCH" $hostdeps) || return 1
	missing=$(echo $mbd $mhd)

	# shall ccache be added?
	[ -n "$USE_CCACHE" ] && missing="$missing ccache"

	if [ -z "$install_deps" ]; then
		# if we dont have any missing deps we are done now
		[ -z "$missing" ] && return 0
		error "Missing dependencies (use -r to autoinstall them): $missing"
		return 1
	fi

	uninstall_after=".makedepends-$pkgname $uninstall_after"
	# make a --simulate run first to detect missing deps
	# apk-tools --virtual is no goot at reporting those.
	deps "--quiet --simulate" || return 1
	deps || return 1
}

# replace the md5sums in the APKBUILD
checksum() {
	local s files
	[ -z "$source" ] && [ -n "${md5sums}${sha256sums}${sha512sums}" ] \
		&& msg "Removing checksums from APKBUILD"
	sed -E -i \
		-e '/^(md5|sha[0-9]+)sums=".*"$/d' \
		-e '/^(md5|sha[0-9]+)sums="/,/"$/d' \
		\
		-e "/^(md5|sha[0-9]+)sums='.*'\$/d" \
		-e "/^(md5|sha[0-9]+)sums='/,/'\$/d" \
		APKBUILD

	[ -z "$source" ] && return 0
	fetch
	for s in $source; do
		local name="$(filename_from_uri $s)"
		case " $files " in
		*" $name "*) die "duplicate found in \$source: $name";;
		esac
		files="$files $name"
	done

	msg "Updating the sha512sums in APKBUILD..."
	md5sums=
	sha256sums=
	sha512sums="$(cd "$srcdir" && sha512sum $files)" \
		|| die "sha512sum failed"
	printf 'sha512sums="\n%s\n"\n' "$sha512sums" >>"$APKBUILD"
}

rootbld_actions() {
	local part _check=check
	if options_has "checkroot"; then
		_check=check_fakeroot
	fi
	if ! want_check; then
		_check=true
	fi
	for part in symlinksrc unpack prepare build $_check rootpkg; do
		runpart $part
	done
}

rootbld() {
	if apk_up2date && [ -z "$force" ]; then
		msg "Package is up to date"
		return
	fi

	[ "$CBUILD" = "$CHOST" ] || die "rootbld: cross-building not supported currently"
	apk info -eq abuild-rootbld || die "rootbld: abuild-rootbld package not installed"

	logcmd "chroot building building $repo/$pkgname-$pkgver-r$pkgrel"

	# check early if we have abuild key
	abuild-sign --installed

	# make sure SOURCE_DATE_EPOCH is set
	set_source_date

	# networking business
	sanitycheck
	clean
	fetch
	verify

	msg "Preparing build chroot..."

	mkusers

	BUILD_ROOT=$(mktemp -d /var/tmp/abuild.XXXXXXXXXX)

	mkdir -p "$BUILD_ROOT/proc" "$BUILD_ROOT/etc/apk/keys" \
		"$BUILD_ROOT/$HOME/.abuild" "$BUILD_ROOT/$aportsgit" \
		"$BUILD_ROOT/$SRCDEST" "$BUILD_ROOT/$REPODEST" \
		"$BUILD_ROOT/tmp/pkg" "$BUILD_ROOT/tmp/src" \
		"$BUILD_ROOT/usr/bin" "$pkgbasedir" "$REPODEST" \
		"$BUILD_ROOT/$HOME/.ccache" \
		"$srcdir"

	cp /etc/abuild.conf /etc/group /etc/passwd "$BUILD_ROOT/etc"
	cp /etc/apk/keys/* "$BUILD_ROOT/etc/apk/keys"

	if options_has "net"; then
		cp /etc/resolv.conf "$BUILD_ROOT/etc"
	fi

	local version="edge" buildhost="edge" gitref
	if gitref="$(expr "$(git symbolic-ref --short HEAD)" : '\([0-9]\+\(\.[0-9]\+\)*\)-')"; then
		version=v${gitref}
		buildhost=${gitref/./-}
	fi

	[ -s "$repo_template" ] || die "rootbld: $repo_template does not exist"
	(
		for key in $(git config --list --name-only); do
			k=${key#abuild.}
			[ $k != $key ] && \
				eval "export $k=\"$(git config --get $key)\""
		done

		export mirror version
		[ "$mirror" ] || mirror=http://dl-cdn.alpinelinux.org/alpine

		envsubst
		echo "$REPODEST/$repo"
	) < "$repo_template" > "$BUILD_ROOT/etc/apk/repositories"

	calcdeps
	$SUDO_APK add --initdb --root "$BUILD_ROOT" --update \
		abuild alpine-base build-base git $hostdeps $builddeps \
		${USE_CCACHE:+ccache}

	local bwrap_opts=""
	options_has "net" || bwrap_opts="$bwrap_opts --unshare-net"
	bwrap --unshare-ipc --unshare-uts $bwrap_opts \
		--ro-bind "$BUILD_ROOT" / \
		--proc /proc \
		--dev-bind /dev /dev \
		--bind "$BUILD_ROOT/$HOME" "$HOME" \
		--ro-bind "$HOME/.abuild" "$HOME/.abuild" \
		--ro-bind "$aportsgit" "$aportsgit" \
		${USE_CCACHE:+ --bind "$HOME/.ccache" "$HOME/.ccache"} \
		--bind "$SRCDEST" "$SRCDEST" \
		--bind "$BUILD_ROOT/tmp" /tmp \
		--bind "$BUILD_ROOT/tmp/src" "$srcdir" \
		--bind "$BUILD_ROOT/tmp/pkg" "$pkgbasedir" \
		--bind "$REPODEST" "$REPODEST" \
		--hostname "build-$buildhost-$CARCH" \
		--chdir "$startdir" \
		--setenv PATH ${USE_CCACHE:+/usr/lib/ccache/bin:}/bin:/usr/bin:/sbin:/usr/sbin \
		--setenv FAKEROOTDONTTRYCHOWN 1 \
		/usr/bin/abuild $force rootbld_actions
	update_abuildrepo_index
	cleanup $CLEANUP
}

stripbin() {
	local bin
	if options_has "!strip" || [ "${subpkgarch:-$pkgarch}" = "noarch" ]; then
		return 0
	fi
	cd "${subpkgdir:-$pkgdir}" || return 1

	local stripcmd=strip
	case "${subpkgarch:-$pkgarch}" in
	$CBUILD_ARCH)	stripcmd="strip" ;;
	$CARCH)		stripcmd="${CHOST}-strip" ;;
	$CTARGET_ARCH)	stripcmd="${CTARGET}-strip" ;;
	esac

	msg "Stripping binaries"
	scanelf --recursive --nobanner --osabi --etype "ET_DYN,ET_EXEC" . \
		| while read type osabi filename; do

		# scanelf may have picked up a temp file so verify that file still exists
		[ -e "$filename" ] || continue

		[ "$osabi" != "STANDALONE" ] || continue
		local XATTR=$(getfattr --match="" --dump "${filename}")
		"${stripcmd}" "${filename}"
		if [ -n "$XATTR" ]; then
			echo "$XATTR" | "$SETFATTR" --restore=-
		fi
	done
}

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

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 $subpackages; do
		local _name="${i%%:*}"
		[ "$1" = "${_name##*-}" ] && 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
}

deps() {
	[ -z "$hostdeps" -a -z "$builddeps" ] && calcdeps

	local _quiet="$1"
	[ -z "$_quiet" ] && msg "Installing for build:$builddeps"
	apk_add_makedeps make $_quiet $builddeps || return 1
	if [ -n "$CBUILDROOT" ]; then
		[ -z "$_quiet" ] && msg "Installing for host:$hostdeps"
		apk_add_makedeps host $_quiet --no-scripts \
			--root "$CBUILDROOT" --arch "$CTARGET_ARCH" $hostdeps \
			|| return 1
	fi
}

undeps() {
	local _quiet="$@"
	$SUDO_APK del $_quiet $apk_opt_wait .makedepends-$pkgname || :
	if [ -n "$CBUILDROOT" ]; then
		$SUDO_APK del $_quiet --root "$CBUILDROOT" --arch "$CTARGET_ARCH" $apk_opt_wait \
			--no-scripts .hostdepends-$pkgname || :
	fi
}

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

all() {
	if ! [ -n "$force" ]; then
		if ! check_arch; then
			echo "Package not available for the target architecture ($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 "$giturl" ] && die "Missing repository url in APKBUILD!"
	[ -n "$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_path" $forceroot clean
	mkdir -p "$srcdir" && cd "$srcdir"
	# clone git repo and archive
	if [ -n "$giturl" ]; then
		local _version=${verbase:-0}_git${_date}
		[ "$git" = "true" ] &&  die "Missing git! Install git to support git clone."
		local _rev="${reporev:-HEAD}"
		[ "$_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_path" $forceroot checksum
	fi
}

usage() {
	cat <<-EOF
		usage: $program [options] [-P REPODEST] [-s SRCDEST] [-D DESCRIPTION] [cmd] ...
		       $program [-c] -n PKGNAME[-PKGVER]
		Options:
		 -A  Print CARCH and exit
		 -c  Enable colored output
		 -d  Disable dependency checking
		 -D  Set APKINDEX description (default: \$repo \$(git describe))
		 -f  Force specified cmd (skip checks: apk up to date, arch, libc)
		 -F  Force run as root
		 -h  Show this help
		 -k  Keep built packages, even if APKBUILD or sources are newer
		 -K  Keep buildtime temp dirs and files (srcdir/pkgdir/deps)
		 -m  Disable colors (monochrome)
		 -P  Set REPODEST as the repository location for created packages
		 -q  Quiet
		 -r  Install missing dependencies from system repository (using sudo)
		 -s  Set source package destination directory
		 -v  Verbose: show every command as it is run (very noisy)

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

		To activate cross compilation specify in environment:
		  CHOST       Arch or hostspec of machine to generate packages for
		  CTARGET     Arch or hostspec of machine to generate compiler for

	EOF
	exit 0
}

APKBUILD="${APKBUILD:-./APKBUILD}"
unset force
while getopts ":AcdD:fFhkKmnP:qrRs:uvV" opt; do
	case $opt in
		'A') echo "$CARCH"; exit 0;;
		'c') enable_colors
		     color_opt="-c";;
		'd') nodeps="-d";;
		'D') DESCRIPTION=$OPTARG;;
		'f') force="-f";;
		'F') forceroot="-F";;
		'h') usage;;
		'k') keep="-k";;
		'K') keep_build="-K";;
		'm') disable_colors
		     color_opt="-m";;
		'n') die "Use newapkbuild to create new aports";;
		'P') REPODEST=$OPTARG;;
		'q') quiet="-q";;
		'r') install_deps="-r";;
		's') SRCDEST=$OPTARG;;
		'v') set -x;;
		'V') echo "$program $program_version"; exit 0;;
		'?') die "Unrecognized option: $OPTARG";;
	esac
done
shift $(( $OPTIND - 1 ))

# check so we are not root
if [ $(id -u) -eq 0 ] && [ -z "$FAKEROOTKEY" ]; then
	[ -z "$forceroot" ] && die "Do not run abuild as root"
	FAKEROOT=
fi

# check for ccache presence and maybe export its path
if [ -n "$USE_CCACHE" ]; then
	mkdir -p "$HOME/.ccache"
	# prepend ccache path
	export PATH="/usr/lib/ccache/bin:$PATH"
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##*/}

aportsgit=${APORTSDIR:-${startdir}}
repo_template=$aportsgit/$repo/.rootbld-repositories

SRCDEST=${SRCDEST:-$startdir}

BUILD_ROOT=

export CC CXX

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

builddir=${builddir:-"$srcdir/$pkgname-$pkgver"}

# If REPODEST is set then it will override the PKGDEST
if [ -z "$REPODEST" ]; then
	warning "REPODEST is not set and is now required. Defaulting to $HOME/packages"
	[ -n "$PKGDEST" ] && die "PKGDEST is no longer supported."
	REPODEST="$HOME/packages"
fi

# for recursive action
export REPODEST SRCDEST

# add dbg subpackage if its enabled globally
if [ -n "$DEFAULT_DBG" ] && ! subpackage_types_has "dbg" && ! options_has "!dbg" && [ "$arch" != "noarch" ]; then
        subpackages="$pkgname-dbg $subpackages"
fi

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

if [ -n "$subpkgname" ]; then
	# If we are handling a sub package then reset subpackages and install
	origsubpackages="$subpackages"
	subpackages=
else
	allpackages="$pkgname $subpackages"
	for i in $linguas; do
		allpackages="$allpackages $pkgname-lang-$i::noarch"
	done
fi
apkbuild_arch="$arch"
pkgdir="$pkgbasedir/$pkgname"
if [ -z "$pkgarch" ]; then
	pkgarch=$CARCH
	list_has noarch $arch && pkgarch=noarch
fi
controldir="$pkgbasedir"/.control.${subpkgname:-$pkgname}

trap 'die "Aborted by user"' INT

[ -z "$subpkgdir" ] && set_xterm_title "abuild${CROSS_COMPILE+-$CARCH}: $pkgname"

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

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

cleanup