#!/bin/bash
#
#   makepkg - make packages compatable for use with pacman
#
#   Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
#   Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
#   Copyright (c) 2006 by Miklos Vajna <vmiklos@frugalware.org>
#   Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu>
#   Copyright (c) 2006 by Alex Smith <alex@alex-smith.me.uk>
#   Copyright (c) 2006 by Andras Voroskoi <voroskoi@frugalware.org>
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 
#   USA.
#

myver='3.0.3'
startdir=$(pwd)

BUILDSCRIPT="PKGBUILD"
PKGEXT="pkg.tar.gz"

source "/etc/abs/abs.conf"
SRCROOT="$ABSROOT"

# Options
CLEANUP=0
CLEANCACHE=0
DEP_BIN=0
DEP_SRC=0
SUDO=0
FORCE=0
GENINTEG=0
INSTALL=0
NOBUILD=0
NODEPS=0
NOEXTRACT=0
RMDEPS=0
REPKG=0
LOGGING=0

PACMAN_OPTS=

#determine if we are running with fakeroot
if [ "$1" = "-F" ]; then
	INFAKEROOT=1
	shift
else
	INFAKEROOT=0
fi

### SUBROUTINES ###

plain() {
	if [ ! "$USE_COLOR" = "n" -a "$(check_buildenv color)" = "y" ]; then
		echo -e "    \033[1;1m$1\033[1;0m" >&2
	else
		echo "    $1" >&2
	fi
}

msg() {
	if [ ! "$USE_COLOR" = "n" -a "$(check_buildenv color)" = "y" ]; then
		echo -e "\033[1;32m==>\033[1;0m \033[1;1m$1\033[1;0m" >&2
	else
		echo "==> $1" >&2
	fi
}

msg2() {
	if [ ! "$USE_COLOR" = "n" -a "$(check_buildenv color)" = "y" ]; then
		echo -e "   \033[1;34m->\033[1;0m \033[1;1m$1\033[1;0m" >&2
	else
		echo "   -> $1" >&2
	fi
}

warning() {
	if [ ! "$USE_COLOR" = "n" -a "$(check_buildenv color)" = "y" ]; then
		echo -e "\033[1;33m==> WARNING:\033[1;0m \033[1;1m$1\033[1;0m" >&2
	else
		echo "==> WARNING: $1" >&2
	fi
}

error() {
	if [ ! "$USE_COLOR" = "n" -a "$(check_buildenv color)" = "y" ]; then
		echo -e "\033[1;31m==> ERROR:\033[1;0m \033[1;1m$1\033[1;0m" >&2
	else
		echo "==> ERROR: $1" >&2
	fi
}

strip_url() {
	echo "$1" | sed 's|^.*://.*/||g'
}

# checks to see if options are present in makepkg.conf or PKGBUILD;
#   PKGBUILD options always take precedence
check_option() {
	local needle=$(echo $1 | tr [:upper:] [:lower:])
	local i
	# loop PKGBUILD opts first so it overrides makepkg.conf
	for i in ${options[@]}; do
		local lc=$(echo $i | tr [:upper:] [:lower:])
		if [ "$lc" = "$needle" ]; then
			echo "y"
			return
		elif [ "$lc" = "!$needle" ]; then
			echo "n"
			return
		# START DEPRECATED
		# TODO This code should be removed in the next release of makepkg
		elif [ "$lc" = "no$needle" ]; then
			warning "Options beginning with 'no' will be depricated in the next version of makepkg!"
			plain "Please replace 'no' with '!': no$needle -> !$needle."
			echo "n"
			return
		elif [ "$lc" = "keepdocs" -a "$needle" = "docs" ]; then
			warning "Option 'keepdocs' may not work as intended. Please replace with 'docs'."
		# END DEPRECATED
		fi
	done
	# fall back to makepkg.conf options
	for i in ${OPTIONS[@]}; do
		local lc=$(echo $i | tr [:upper:] [:lower:])
		if [ "$lc" = "$needle" ]; then
			echo "y"
			return
		elif [ "$lc" = "!$needle" ]; then
			echo "n"
			return
		fi
	done
	echo "unknown"
	return
}

# check if option is present in BUILDENV
check_buildenv() {
	local needle=$(echo $1 | tr [:upper:] [:lower:])
	local i
	# use options from makepkg.conf
	for i in ${BUILDENV[@]}; do
		local lc=$(echo $i | tr [:upper:] [:lower:])
		if [ "$lc" = "$needle" ]; then
			echo "y"
			return
		elif [ "$lc" = "!$needle" ]; then
			echo "n"
			return
		fi
	done
	echo "unknown"
	return
}

in_array() {
	local needle=$1
	shift 1
	[ -z "$1" ] && return 1
	for i in $*; do
		[ "$i" = "$needle" ] && return 0
	done
	return 1
}

checkdeps() {
	[ $# -gt 0 ] || return

	pmout=$(pacman $PACMAN_OPTS -T $*)
	ret=$?
	if [ $ret -eq 1 ]; then #unresolved deps
		local missingdeps=()

		for dep in $pmout; do
			# dep is considered resolved if it is one of the packages 
			# that we are building
			if ! in_array $dep ${pkgs[@]}; then
				missingdeps=(${missingdeps[@]} ${dep})
			fi
		done

		echo ${missingdeps[*]}
	elif [ $ret -ne 0 ]; then
		error "pacman returned a fatal error ($ret): $pmout"
		exit 1
	fi
}

handledeps() {
	local missingdeps=0
	local deplist="$*"
	local depstrip=""
	local striplist=""
	local haveperm=0
	if [ \( "$EUID" = "0" -a "$INFAKEROOT" != "1" \) -o "$SUDO" = 1 ]; then
		haveperm=1
	fi

	for dep in $deplist; do
		depstrip=$(echo $dep | sed 's|=.*$||' | sed 's|>.*$||' | sed 's|<.*$||')
		striplist="$striplist $depstrip"
	done

	if [ "$deplist" != "" -a $haveperm -eq 1 ]; then
		if [ "$DEP_BIN" = "1" -a "$SUDO" = "1" ]; then
			# install missing deps from binary packages (using pacman -S and sudo)
			msg "Installing missing dependencies..."
			if [ "$INFAKEROOT" = "1" ]; then
				# kinda hacky, but we need to make pacman think that we're NOT
				# in fakeroot so it will go ahead and install the dependencies.
				FAKEROOTKEY2=$FAKEROOTKEY
				unset FAKEROOTKEY
			fi
			sudo pacman $PACMAN_OPTS -S $striplist
			if [ $? -eq 1 ]; then
				error "Pacman failed to install missing dependencies."
				exit 1
			fi
			if [ "$INFAKEROOT" = "1" ]; then
				export FAKEROOTKEY=$FAKEROOTKEY2
				unset FAKEROOTKEY2
			fi
		elif [ "$DEP_BIN" = "1" ]; then
			# install missing deps from binary packages (using pacman -S)
			msg "Installing missing dependencies..."
			pacman $PACMAN_OPTS -S $striplist
			if [ $? -eq 1 ]; then
				error "Pacman failed to install missing dependencies."
				exit 1
			fi
		elif [ "$DEP_SRC" = "1" ]; then
			# install missing deps by building them from source.
			# we look for each package name in $SRCROOT and build it.
			if [ "$SRCROOT" = "" ]; then
				error "Source root cannot be found - please make sure it is specified in /etc/makepkg.conf"
				exit 1
			fi
			# TODO: handle version comparators (eg, glibc>=2.2.5)
			msg "Building missing dependencies..."
			for dep in $striplist; do
				candidates=$(find $SRCROOT -type d -name "$dep")
				if [ "$candidates" = "" ]; then
					error "Could not find \"$dep\" under $SRCROOT"
					exit 1
				fi
				success=0
				for pkgdir in $candidates; do
					if [ -f "$pkgdir/$BUILDSCRIPT" ]; then
						cd "$pkgdir"
						if [ "$RMDEPS" = "1" ]; then
							PKGDEST="$PKGDEST" makepkg -i -c -b -r
						else
							PKGDEST="$PKGDEST" makepkg -i -c -b
						fi
						if [ $? -eq 0 ]; then
							success=1
							break
						fi
					fi
				done
				if [ "$success" = "0" ]; then
					error "Failed to build \"$dep\""
					exit 1
				fi
			done
		else
			missingdeps=1
		fi
	elif [ "$deplist" != "" -a $haveperm -eq 0 ]; then
		if [ "$DEP_SRC" = "1" -o "$DEP_BIN" = "1" ]; then
			warning "Cannot auto-install missing dependencies as a normal user without sudo!"
			plain "Run makepkg as root or with -S to resolve dependencies automatically."
		fi
		missingdeps=1
	fi

	# rerun any additional sh scripts found in /etc/profile.d/
	for i in /etc/profile.d/*.sh
	do
		if [ -x $i ]; then
			. $i &>/dev/null
		fi
	done

	return $missingdeps
}

resolvedeps() {
	deplist=""
	newdeplist=""

	deplist=$(checkdeps $*)
	if [ -n "${deplist}" ]; then
		handledeps $deplist
		if [ $? -eq 0 ]; then
			# check deps again to make sure they were resolved
			newdeplist=$(checkdeps $*)
			if [ -n "${newdeplist}" ]; then
				error "Failed to install all missing dependencies."
			fi
		else
			newdeplist="$deplist"
		fi
	fi

	# if new dep list is not empty, print the list
	if [ -n "${newdeplist}" ]; then
		msg "Missing Dependencies:"
		for dep in ${newdeplist}; do
			msg2 "${dep}"
		done
		return 1
	else
		return 0
	fi
}

# fix flyspray bug #5923
removedeps() {
	# runtimedeps and buildtimedeps are set when resolving deps
	local deplist="$runtimedeps $buildtimedeps"
	local depstrip=""
	local striplist=""

	for dep in $deplist; do
		depstrip=$(echo $dep | sed 's|=.*$||' | sed 's|>.*$||' | sed 's|<.*$||')
		striplist="$striplist $depstrip"
	done

	if [ "$RMDEPS" = "1" -a "$SUDO" = "1" -a -n "$deplist" ]; then
		msg "Removing installed dependencies..."
		if [ "$INFAKEROOT" = "1" ]; then
			export FAKEROOTKEY2=$FAKEROOTKEY
			unset FAKEROOTKEY
		fi
		sudo pacman $PACMAN_OPTS -Rs $striplist
		if [ "$INFAKEROOT" = "1" ]; then
			export FAKEROOTKEY=$FAKEROOTKEY2
			unset FAKEROOTKEY2
		fi
	elif [ "$RMDEPS" = "1" -a "$EUID" = "0" -a "$INFAKEROOT" != "1" -a -n "$deplist" ]; then
		msg "Removing installed dependencies..."
		pacman $PACMAN_OPTS -Rs $striplist
	fi
}

installpackage() {
	local pkgfiles=""

	for pkg in "${pkgs[@]}"
	do
		pkgfiles="${pkgfiles} $PKGDEST/${pkg}-${pkgver}-${pkgrel}-${CARCH}.${PKGEXT}"
	done

	if [ "$INSTALL" = "1" -a "$SUDO" = "1" ]; then
		msg "Installing package with pacman -U..."
		if [ "$INFAKEROOT" = "1" ]; then
			FAKEROOTKEY2=$FAKEROOTKEY
			unset FAKEROOTKEY
		fi
		sudo pacman $PACMAN_OPTS -U ${pkgfiles}
		local exitcode=$?
		if [ "$INFAKEROOT" = "1" ]; then
			export FAKEROOTKEY=$FAKEROOTKEY2
			unset FAKEROOTKEY2
		fi
		exit $exitcode
	elif [ "$INSTALL" = "1" -a "$EUID" = "0" -a "$INFAKEROOT" != "1" ]; then
		msg "Installing package with pacman -U..."
		pacman $PACMAN_OPTS -U ${pkgfiles}
		exit $?
	fi
}

usage() {
	echo "makepkg version $myver"
	echo
	echo "Usage: $0 [options]"
	echo
	echo "Options:"
	echo "  -b, --builddeps  Build missing dependencies from source"
	echo "  -c, --clean      Clean up work files after build"
	echo "  -C, --cleancache Clean up source files from the cache"
	echo "  -d, --nodeps     Skip all dependency checks"
	echo "  -e, --noextract  Do not extract source files (use existing src/ dir)"
	echo "  -f, --force      Overwrite existing package"
	echo "  -g, --geninteg   Generate integrity checks for source files"
	echo "  -h, --help       This help"
	echo "  -i, --install    Install package after successful build"
	echo "  -L, --log        Log package build process"
	echo "  -m, --nocolor    Disable colorized output messages"
	echo "  -o, --nobuild    Download and extract files only"
	echo "  -p <buildscript> Use an alternate build script (instead of '$BUILDSCRIPT')"
	echo "  -r, --rmdeps     Remove installed dependencies after a successful build"
	# fix flyspray feature request #2978
	echo "  -R, --repackage  Repackage contents of pkg/ without building"
	echo "  -s, --syncdeps   Install missing dependencies with pacman"
	echo "  -S, --usesudo    When calling pacman, use sudo"
	echo
	echo "These options can be passed to pacman:"
	echo
	echo "  --noconfirm      Do not ask for confirmation when resolving dependencies"
	echo "  --noprogressbar  Do not show a progress bar when downloading files"
	echo
	echo "If -p is not specified, makepkg will look for '$BUILDSCRIPT'"
	echo
}

ARGLIST=$@

#preserve environment variables
_PKGDEST=${PKGDEST}
_SRCDEST=${SRCDEST}

#Source makepkg.conf; fail if it is not found
if [ -f /etc/makepkg.conf ]; then
	source /etc/makepkg.conf
else
	error "/etc/makepkg.conf not found. cannot continue"
	exit 1
fi

#Source user-specific makepkg.conf overrides
if [ -f ~/.makepkg.conf ]; then
	source ~/.makepkg.conf
fi

# override settings with an environment variable for batch processing
PKGDEST=${_PKGDEST:-$PKGDEST}
PKGDEST=${PKGDEST:-$startdir} #default to $startdir if undefined
SRCDEST=${_SRCDEST:-$SRCDEST}
SRCDEST=${SRCDEST:-$startdir} #default to $startdir if undefined

while [ "$#" -ne "0" ]; do
	case $1 in
		# pacman
		--noconfirm)      PACMAN_OPTS="$PACMAN_OPTS --noconfirm" ;;
		--noprogressbar)  PACMAN_OPTS="$PACMAN_OPTS --noprogressbar" ;;
		# makepkg
		--clean)      CLEANUP=1 ;;
		--cleancache) CLEANCACHE=1 ;;
		--syncdeps)   DEP_BIN=1 ;;
		--usesudo)    SUDO=1 ;;
		--builddeps)  DEP_SRC=1 ;;
		--nodeps)     NODEPS=1 ;;
		--noextract)  NOEXTRACT=1 ;;
		--install)    INSTALL=1 ;;
		--force)      FORCE=1 ;;
		--nobuild)    NOBUILD=1 ;;
		--nocolor)    USE_COLOR="n" ;;
		--geninteg)   GENINTEG=1 ;;
		--rmdeps)     RMDEPS=1 ;;
		--repackage)  REPKG=1 ;;
		--log)        LOGGING=1 ;;
		--help)
					usage
					exit 0
					;;
		--*)
					usage
					exit 1
					;;
		-*)
		while getopts "bcCdefghiLmop:rRsS-" opt; do
			case $opt in
				b) DEP_SRC=1 ;;
				c) CLEANUP=1 ;;
				C) CLEANCACHE=1 ;;
				d) NODEPS=1 ;;
				e) NOEXTRACT=1 ;;
				f) FORCE=1 ;;
				g) GENINTEG=1 ;;
				h)
						usage
						exit 0
						;;
				i) INSTALL=1 ;;
				L) LOGGING=1 ;;
				m) USE_COLOR="n" ;;
				o) NOBUILD=1 ;;
				p) BUILDSCRIPT=$OPTARG ;;
				r) RMDEPS=1 ;;
				R) REPKG=1 ;;
				s) DEP_BIN=1 ;;
				S) SUDO=1 ;;
				-)
						OPTIND=0
						break
						;;
				*)
						usage
						exit 1
						;;
			esac
		done
		;;
		*)
				true
				;;
	esac
	shift
done

# check for sudo
if [ "$SUDO" = "1" -a ! "$(type -p sudo)" ]; then
	error "Cannot find the sudo binary! Is sudo installed?"
	exit 1
fi

if [ "$CLEANCACHE" = "1" ]; then
	#fix flyspray feature request #5223
	if [ -n "$SRCDEST" -a "$SRCDEST" != "$startdir" ]; then
		msg "Cleaning up ALL files from $SRCDEST."
		echo -n "    Are you sure you wish to do this? [Y/n] "
		read answer
		answer=$(echo $answer | tr [:upper:] [:lower:])
		if [ "$answer" = "yes" -o "$answer" = "y" ]; then
			rm "$SRCDEST"/*
			if [ $? -ne 0 ]; then
				error "Problem removing files; you may not have correct permissions in $SRCDEST"
				exit 1
			else
				# removal worked
				msg "Source cache cleaned."
				exit 0
			fi
		else
			# answer = no
			msg "No files have been removed."
			exit 0
		fi
	else
		# $SRCDEST is $startdir, two possibilities
		error "Source destination must be defined in makepkg.conf."
		plain "In addition, please run makepkg -C outside of your cache directory."
		exit 1
	fi
fi

unset pkgname pkgver pkgrel pkgdesc url license groups provides md5sums force
unset replaces depends conflicts backup source install build makedepends
unset options noextract

if [ ! -f $BUILDSCRIPT ]; then
	error "$BUILDSCRIPT does not exist."
	exit 1
	#TODO this is an attempt at a generic way to unset all package specific
	#variables in a PKGBUILD
	#else
	#    #this is fun.... we'll unset
	#    for var in $(grep "=" $BUILDSCRIPT | sed "s|.*\(\<.*\>\)=.*|\1|g"); do
	#        unset $var
	#    done
fi

source $BUILDSCRIPT

# check for no-no's in the build script
if [ -z "$pkgver" ]; then
	error "pkgver is not allowed to be empty."
	exit 1
fi
if [ -z "$pkgrel" ]; then
	error "pkgrel is not allowed to be empty."
	exit 1
fi
if [ $(echo "$pkgver" | grep '-') ]; then
	error "pkgver is not allowed to contain hyphens."
	exit 1
fi
if [ $(echo "$pkgrel" | grep '-') ]; then
	error "pkgrel is not allowed to contain hyphens."
	exit 1
fi
if ! in_array $CARCH ${arch[@]}; then
	error "$pkgname is not available for the '$CARCH' architecture."
	plain "Note that many packages may need a line added to their $BUILDSCRIPT"
	plain "such as arch=('$CARCH')."
	exit 1
fi

if [ "$install" -a ! -f "$install" ]; then
	error "install scriptlet ($install) does not exist."
	exit 1
fi

# cache all the pkgnames that will be built. it'll come handy later.
pkgs=(${pkgname})

if [ ! -z "$subpkgs" ]; then
	for subpkg in "${subpkgs[@]}"
	do
		pkgs=(${pkgs[@]} $(eval "echo \$pkgname_$subpkg"))
	done
fi

# check if all packages have already been built
if [ "$FORCE" = "0" -a "$GENINTEG" = "0" ]; then
	allpkgsbuilt=1

	for pkg in "${pkgs[@]}"
	do
		if [ ! -f "$PKGDEST/${pkg}-${pkgver}-${pkgrel}-${CARCH}.${PKGEXT}" ]; then
			allpkgsbuilt=0
			break
		fi
	done

	if [ "$allpkgsbuilt" = "1" ]; then
		if [ "$INSTALL" = "1" ]; then
			warning "all packages have already been built, installing existing packagess."
			installpackage
			exit $?
		else
			error "all packages have already been built.  (use -f to overwrite)"
			exit 1
		fi
	fi
fi

# Enter the fakeroot environment if necessary.  This will call the makepkg
# script again as the fake root user.  We detect this by passing a sentinel
# option (-F) to makepkg.
if [ "$EUID" != "0" ]; then
	if [ "$(check_buildenv fakeroot)" = "y" ]; then
		if [ $(type -p fakeroot) ]; then
			msg "Entering fakeroot environment"
			fakeroot -- $0 -F $ARGLIST
			exit $?
		else
			warning "Fakeroot is not installed. Building as an unprivileged user"
			plain "will result in non-root ownership of the packaged files. Install"
			plain "the fakeroot package to correctly build as a non-root user."
			plain ""
			sleep 1
		fi
	else
		warning "Running makepkg as an unprivileged user will result in non-root"		
		plain "ownership of the packaged files. Try using the fakeroot environment"
		plain "by placing 'fakeroot' in the BUILDENV array in makepkg.conf."
		plain ""
		sleep 1
	fi
fi

msg "Making package: $pkgname $pkgver-$pkgrel ($(date))"

# fix flyspray bug #5973
if [ "$NODEPS" = "1" -o "$GENINTEG" = "1" -o "$NOBUILD" = "1" -o "$REPKG" = "1" ]; then
	if [ "$NODEPS" = "1" ]; then
		warning "skipping dependency checks"
	fi
	# skip printing a warning message for the others: geninteg, nobuild, repkg
elif [ $(type -p pacman) ]; then
	deperr=0
	# these two variables are needed later by removedeps
	unset runtimedeps buildtimedeps

	msg "Checking Runtime Dependencies..."
	resolvedeps ${depends[@]}
	ret=$?
	# deplist is a global variable set by resolvedeps
	runtimedeps="$deplist"
	if [ "$ret" != "0" ]; then
		deperr=1
	fi

	msg "Checking Buildtime Dependencies..."
	resolvedeps ${makedepends[@]}
	ret=$?
	# deplist is a global variable set by resolvedeps
	buildtimedeps="$deplist"
	if [ "$ret" != "0" ]; then
		deperr=1
	fi

	if [ $deperr -eq 1 ]; then
		error "could not resolve all dependencies."
		exit 1
	fi
else
	warning "pacman was not found in PATH. skipping dependency checks."
fi

cd "$startdir"

# retrieve sources
msg "Retrieving Sources..."
mkdir -p src
cd "$startdir/src"
for netfile in ${source[@]}; do
	file=$(strip_url "$netfile")
	if [ -f "../$file" ]; then
		msg2 "Found $file in build dir"
		cp "../$file" .
	elif [ -f "$SRCDEST/$file" ]; then
		msg2 "Using cached copy of $file"
		cp "$SRCDEST/$file" .
	else
		# check for a download utility
		if [ -z "$FTPAGENT" ]; then
			error "FTPAGENT is not configured. Check the /etc/makepkg.conf file."
			msg "Aborting..."
			exit 1
		fi
		ftpclient=$(echo $FTPAGENT | awk {'print $1'})
		if [ ! -x "$ftpclient" ]; then
			error "ftpclient $(basename $ftpclient) is not installed."
			msg "Aborting..."
			exit 1
		fi
		proto=$(echo "$netfile" | sed 's|://.*||')
		if [ "$proto" != "ftp" -a "$proto" != "http" -a "$proto" != "https" ]; then
			error "$netfile was not found in the build directory and is not a proper URL."
			msg "Aborting..."
			exit 1
		fi
		msg2 "Downloading $file"
		$FTPAGENT "$netfile"
		# fix flyspray bug #3289
		ftpret=$?
		if [ $ftpret -gt 0 ]; then
			error "Failure while downloading $file"
			msg "Aborting..."
			#rm "$file"
			exit 1
		fi
		if [ -n "$SRCDEST" ]; then
			mkdir -p $SRCDEST && cp "$file" $SRCDEST
			if [ $? -ne 0 ]; then
				warning "You do not have correct permissions to cache source in $SRCDEST"
				cp "$file" ..
			fi
		else
			cp "$file" ..
		fi
	fi
done

if [ "$NOEXTRACT" = "1" -o "$REPKG" = "1" ]; then
	warning "Skipping source integrity checks -- using existing src/ tree"
else
	# TODO we end up checking $GENINTEG 3 times, could probably be refactored
	if [ "$GENINTEG" = "1" ]; then
		msg "Generating checksums for source files"
		plain ""
	fi

	for integ in ${INTEGRITY_CHECK[@]}; do
		integ="$(echo $integ | tr A-Z a-z)"
		case "$integ" in
			md5) integrity_name="md5sum" ;;
			sha1) integrity_name="sha1sum" ;;
			sha256) integrity_name="sha256sum" ;;
			sha384) integrity_name="sha384sum" ;;
			sha512) integrity_name="sha512sum" ;;
			*) error "Invalid integrity algorithm '$integ' specified"; exit 1;;
		esac
		if [ ! $(type -p $integrity_name) ]; then
			error "Cannot find the $integrity_name program."
			exit 1
		fi

		#Generate integrity checks
		if [ "$GENINTEG" = "1" ]; then
			ct=0
			numsrc=${#source[@]}
			for netfile in "${source[@]}"; do
				file=$(strip_url "$netfile")
				sum=$(eval "$integrity_name '$file' | cut -d' ' -f 1")
				if [ $ct -eq 0 ]; then
					echo -n "${integrity_name}s=("
				else
					indent=0
					while [ $indent -lt $((${#integrity_name}+3)) ]; do
						echo -n " "
						indent=$(($indent+1))
					done
				fi
				echo -n "'$sum'"
				ct=$(($ct+1))
				if [ $ct -eq $numsrc ]; then
					echo ')'
				else
					echo
				fi
			done
		#Validate integrity checks
		else 
			integrity_sums=($(eval echo \${${integrity_name}s[@]}))

			if [ ${#integrity_sums[@]} -eq ${#source[@]} ]; then
				msg "Validating source files with ${integrity_name}s"
				errors=0
				idx=0
				for netfile in "${source[@]}"; do
					file=$(strip_url "$netfile")
					echo -n "    $file ... " >&2
					echo "${integrity_sums[$idx]}  $file" | $integrity_name -c - >/dev/null 2>&1
					if [ $? -ne 0 ]; then
						echo "FAILED" >&2
						errors=1
					else
						echo "Passed" >&2
					fi
					idx=$(($idx+1))
				done
				if [ $errors -gt 0 ]; then
					error "One or more files did not pass the validity check!"
					exit 1
				fi
			else
				warning "Integrity checks ($integ) are missing or incomplete."
			fi
		fi
	done

	if [ "$GENINTEG" = "1" ]; then
		plain ""
		exit 0
	fi
fi

#Extract sources
if [ "$NOEXTRACT" = "1" -o "$REPKG" = "1" ]; then
	warning "Skipping source extraction       -- using existing src/ tree"
else
	msg "Extracting Sources..."
	for netfile in "${source[@]}"; do
		unziphack=0
		file=$(strip_url "$netfile")
		if in_array "$file" ${noextract[@]}; then
			#skip source files in the noextract=() array
			#  these are marked explicitly to NOT be extracted
			continue
		fi
		# fix flyspray #6246
		file_type=$(file -biz "$file")
		unset cmd
		case "$file_type" in
			*application/x-tar*application/x-compress*)
				cmd="tar -xzf $file" ;;
			*application/x-tar*)
				cmd="tar -xf $file" ;;
			*application/x-zip*)
				unziphack=1
				cmd="unzip -qqo $file" ;;
			*application/x-cpio*)
				cmd="bsdtar -x -f $file" ;;
			*application/x-gzip*)
				cmd="gunzip -d -f $file" ;;
			*application/x-bzip*)
				cmd="bunzip2 -f $file" ;;
		esac
		if [ "$cmd" != "" ]; then
			msg2 "$cmd"
			$cmd
			if [ $? -ne 0 ]; then
				# unzip will return a 1 as a warning, it is not an error
				if [ "$unziphack" != "1" -o $? -ne 1 ]; then
					error "Failed to extract $file"
					msg "Aborting..."
					exit 1
				fi
			fi
		fi
	done
	
	if [ "$EUID" = "0" ]; then
		# chown all source files to root.root
		chown -R root.root "$startdir/src"
	fi
fi

if [ "$NOBUILD" = "1" ]; then
	msg "Sources are ready."
	exit 0
elif [ "$REPKG" = "1" ]; then
	warning "Skipping build"
else
	# check for existing pkg directory
	if [ -d "$startdir/pkg" ]; then
		msg "Removing existing pkg/ directory..."
		rm -rf "$startdir/pkg"
	fi
	mkdir -p "$startdir/pkg"

	# check for existing subpkg directories too
	if [ ! -z "$subpkgs" ]; then
		for subpkg in "${subpkgs[@]}"
		do
			if [ -d "$startdir/pkg_$subpkg" ]; then
				msg "Removing existing pkg_$subpkg/ directory..."
				rm -rf "$startdir/pkg_$subpkg"
			fi
		mkdir -p "$startdir/pkg_$subpkg"
		done
	fi

	# use distcc if it is requested (check buildenv and PKGBUILD opts)
	if [ "$(check_buildenv distcc)" = "y" -a "$(check_option distcc)" != "n" ]; then
		[ -d /usr/lib/distcc/bin ] && export PATH=/usr/lib/distcc/bin:$PATH
	elif [ "$(check_option distcc)" = "n" ]; then
		# if it is not wanted, clear the makeflags too
		export MAKEFLAGS=""
	fi

	# use ccache if it is requested (check buildenv and PKGBUILD opts)
	if [ "$(check_buildenv ccache)" = "y" -a "$(check_option ccache)" != "n" ]; then
		[ -d /usr/lib/ccache/bin ] && export PATH=/usr/lib/ccache/bin:$PATH
	fi

	# clear user-specified makeflags if requested
	if [ "$(check_option makeflags)" = "n" ]; then
		export MAKEFLAGS=""
	fi

	# build
	msg "Starting build()..."

	# some applications (eg, blackbox) will not build with some languages
	unset LC_ALL LC_MESSAGES LANG
	umask 0022

	# ensure CFLAGS and CXXFLAGS are used
	export CFLAGS
	export CXXFLAGS

	#check for "exit on syntax error" shell option
	echo $SHELLOPTS | grep errexit 2>&1 >/dev/null
	set_e=$?

	ret=0
	if [ "$LOGGING" = "1" ]; then
		BUILDLOG="${startdir}/${pkgname}-${pkgver}-${pkgrel}-${CARCH}.log"
		if [ -f "$BUILDLOG" ]; then
			i=1
			while true; do
				if [ -f "$BUILDLOG.$i" ]; then
					i=$(($i +1))
				else
					break
				fi
			done
			mv "$BUILDLOG" "$BUILDLOG.$i"
		fi

		#use 'errexit' to bail on syntax error
		[ $set_e -eq 1 ] && set -e
		build 2>&1 | tee "$BUILDLOG"; ret=${PIPESTATUS[0]}
		[ $set_e -eq 1 ] && set +e
	else
		#use 'errexit' to bail on syntax error
		[ $set_e -eq 1 ] && set -e
		build 2>&1 || ret=$?
		[ $set_e -eq 1 ] && set +e
	fi
	if [ $ret -gt 0 ]; then
		error "Build Failed.  Aborting..."
		removedeps
		exit 2
	fi
fi

if [ "$(check_option docs)" = "n" ]; then
	# remove info/doc files
	msg "Removing info/doc files..."
	cd "$startdir/pkg"
	#fix flyspray bug #5021
	rm -rf ${DOC_DIRS[@]}
fi

# move /usr/share/man files to /usr/man
if [ -d $startdir/pkg/usr/share/man ]; then
	cd "$startdir"
	mkdir -p pkg/usr/man 
	cp -a pkg/usr/share/man/* pkg/usr/man/
	rm -rf pkg/usr/share/man
fi

# compress man pages
msg "Compressing man pages..."
find "$startdir"/pkg/{usr{,/local},opt/*}/man -type f 2>/dev/null | while read i ; do
	ext="${i##*.}"
	fn="${i##*/}"
	if [ "$ext" != "gz" -a "$ext" != "bz2" ]; then
		# update symlinks to this manpage
		find "$startdir"/pkg/{usr{,/local},opt/*}/man -lname "$fn" 2> /dev/null | while read ln ; do
			rm -f "$ln"
			ln -sf "${fn}.gz" "${ln}.gz"
		done
		# compress the original
		gzip -9 "$i"
	fi
done

cd "$startdir"

# strip binaries
if [ "$(check_option strip)" = "y" ]; then
	msg "Stripping debugging symbols from libraries..."
	find pkg/{,usr,usr/local,opt/*}/lib -type f -not -name "*.dll" -not -name "*.exe" \
	-exec /usr/bin/strip --strip-debug '{}' \; 2>&1 \
	| grep -v "No such file" | grep -v "format not recognized"
	msg "Stripping symbols from binaries..."
	find pkg/{,usr,usr/local,opt/*}/{bin,sbin} -type f -not -name "*.dll" -not -name "*.exe" \
	-exec /usr/bin/strip '{}' \; 2>&1 \
	| grep -v "No such file" | grep -v "format not recognized"
fi

# remove libtool (.la) files
if [ "$(check_option libtool)" = "n" ]; then
	msg "Removing libtool .la files..."
	find pkg -type f -name "*.la" -exec rm -f -- '{}' \;
fi

# remove empty directories
if [ "$(check_option emptydirs)" = "n" ]; then
	msg "Removing empty directories..."
	cd "$startdir/pkg"
	find -depth -type d -empty -delete;
fi

# get some package meta info
builddate=$(LC_ALL= ; LANG= ; date -u "+%a %b %e %H:%M:%S %Y")
if [ "$PACKAGER" != "" ]; then
	packager="$PACKAGER"
else
	packager="Arch Linux (http://www.archlinux.org)"
fi

# XXX this function should really be moved up to live with its friends
createpackage()
{
	local pkgdir=$1
	local size=$(du -cb "$pkgdir" | tail -n 1 | awk '{print $1}')

	msg "Making: $pkgname"

	# build a filelist - do this first to keep meta files out of the list
	msg "Generating .FILELIST file..."
	pushd "$pkgdir" >/dev/null
	tar cvf /dev/null * | sort >.FILELIST

	# write the .PKGINFO file
	msg "Generating .PKGINFO file..."
	echo "# Generated by makepkg $myver" >.PKGINFO
	echo -n "# " >>.PKGINFO
	date >>.PKGINFO
	echo "pkgname = $pkgname" >>.PKGINFO
	echo "pkgver = $pkgver-$pkgrel" >>.PKGINFO
	echo "pkgdesc = $pkgdesc" >>.PKGINFO
	echo "url = $url" >>.PKGINFO
	echo "builddate = $builddate" >>.PKGINFO
	echo "packager = $packager" >>.PKGINFO
	echo "size = $size" >>.PKGINFO
	if [ "$CARCH" != "" ]; then
		echo "arch = $CARCH" >>.PKGINFO
	fi

	for it in "${license[@]}"; do
		echo "license = $it" >>.PKGINFO
	done
	for it in "${replaces[@]}"; do
		echo "replaces = $it" >>.PKGINFO
	done
	for it in "${groups[@]}"; do
		echo "group = $it" >>.PKGINFO
	done
	for it in "${depends[@]}"; do
		echo "depend = $it" >>.PKGINFO
	done
	for it in "${conflicts[@]}"; do
		echo "conflict = $it" >>.PKGINFO
	done
	for it in "${provides[@]}"; do
		echo "provides = $it" >>.PKGINFO
	done
	for it in "${backup[@]}"; do
		echo "backup = $it" >>.PKGINFO
	done

	# TODO maybe remove this at some point
	# warn if license array is not present or empty
	if [ "$license" = "" ]; then
		warning "Please add a license line to your $BUILDSCRIPT!"
		plain "example for GPL'ed software: license=('GPL')."
	fi

	# check for an install script
	if [ "$install" != "" ]; then
		msg "Copying install script..."
		cp "$startdir/$install" "$pkgdir/.INSTALL"
	fi

	# do we have a changelog?
	have_changelog=0
	if [ -f "$startdir/ChangeLog" ]; then
		msg "Copying package changelog"
		cp "$startdir/ChangeLog" "$pkgdir/.CHANGELOG"
		have_changelog=1
	fi

	# tar it up
	msg "Compressing package..."

	pkg_file="$PKGDEST/$pkgname-$pkgver-$pkgrel-${CARCH}.${PKGEXT}"
	comp_files=".PKGINFO .FILELIST ${install:+.INSTALL}"
	[ $have_changelog -eq 1 ] && comp_files=".CHANGELOG $comp_files"

	if ! tar czf $pkg_file $comp_files *; then
		error "Failed to create package file." 
		exit 1
	fi

	popd >/dev/null

	msg "Finished making: $pkgname  ($(date))"
}

# bah! there are just too many parameters to pass to createpackage(). 
# plus, we don't want to corrupt the global variables (pkgname,pkgdesc,etc).
# so, we make a function here and employ local variables.
createsubpackages()
{
	local pkgname pkgdesc replaces groups depends conflicts
	local provides backup install
	
	if [ ! -z "$subpkgs" ]; then
		for subpkg in "${subpkgs[@]}"
		do
			pkgname=$(eval "echo \${pkgname_$subpkg}")
			pkgdesc=$(eval "echo \${pkgdesc_$subpkg}")
			groups=($(eval "echo \${groups_$subpkg[@]}"))
			depends=($(eval "echo \${depends_$subpkg[@]}"))
			replaces=($(eval "echo \${replaces_$subpkg[@]}"))
			conflicts=($(eval "echo \${conflicts_$subpkg[@]}"))
			provides=($(eval "echo \${provides_$subpkg[@]}"))
			backup=($(eval "echo \${backup_$subpkg[@]}"))
			install=$(eval "echo \${install_$subpkg}")

			createpackage $startdir/pkg_$subpkg
		done
	fi
}

createpackage $startdir/pkg
createsubpackages

if [ "$CLEANUP" = "1" ]; then
	msg "Cleaning up..."
	rm -rf src pkg*
	rm -rf ${pkgname}-${pkgver}-${pkgrel}-${CARCH}.log*
fi

removedeps

installpackage

exit 0
# vim: set ts=2 sw=2 noet: