configure

#!/bin/bash
VERSION=0.0.0

CFG_CMDLINE=
CFG_CROSS=
CFG_REPO=
CROSS_ARCH=
DISTDIR=
MASTERDIR=
HOSTDIR=
SRCPKGS=
XSC=
_append=""
RCV=`command -v xbps-checkvers 2>/dev/null`
RCV_F="repo-checkvers.txt"
TOBUILD=
_TOBUILD=
USAGE="Usage: $0 [-a cross-arch] [-CN] [-R repo] [-d|-m|-h dir]"

[ -f $RCV ] || {
	printf "ERROR: The 'xbps-checkvers' was not found in the PATH.\n"
	exit 1
}

while getopts a:Cc:d:Nm:th:vR: OPT; do
	case "$OPT" in
	a)
		CFG_CROSS="-a $OPTARG"
		case "$OPTARG" in
			native-*-musl|native-*)
				unset CFG_CROSS CROSS_ARCH
				export XBPS_ARCH=${OPTARG#native-}
				;;
			native) unset CFG_CROSS CROSS_ARCH;;
			armv6hf) CROSS_ARCH="armv6l";;
			armv6hf-musl) CROSS_ARCH="armv6l-musl";;
			armv7|armv7hf) CROSS_ARCH="armv7l";;
			armv7-musl|armv7hf-musl) CROSS_ARCH="armv7l-musl";;
			*) CROSS_ARCH="$OPTARG";;
		esac
		;;
	v)
		printf "xbps-bulk version $VERSION\n"
		exit 0
		;;
	C)
		rm -rf tobuild built
		rm -f *.txt Makefile
		exit 0
		;;
	d)
		[ -d $OPTARG ] || {
			printf "ERROR: Cannot find DISTDIR "
			printf "'%s': No such file or directory.\n" "$OPTARG"
			exit 1
		}
		DISTDIR="$OPTARG"
		;;
	N)	CFG_LOCAL="-N";;
	t)	CFG_OVERLAYFS="-t";;
	m)
		[ -d $OPTARG ] || {
			printf "ERROR: Cannot find MASTERDIR "
			printf "'%s': No such file or directory.\n" "$OPTARG"
			exit 1
		}
		MASTERDIR="$OPTARG"
		;;
	h)
		[ -d $OPTARG ] || {
			printf "ERROR: Cannot find HOSTDIR "
			printf "'%s': No such file or directory.\n" "$OPTARG"
			exit 1
		}
		HOSTDIR="$OPTARG"
		;;
	R)
		CFG_REPO="-R $OPTARG"
		;;
	\?)
		printf "%s\n" "$USAGE"
		exit 1
		;;
	esac
done
shift $(($OPTIND - 1))

# Assign defaults
: ${DISTDIR:=$HOME/void-packages}
: ${MASTERDIR:=$DISTDIR/masterdir}
: ${HOSTDIR:=$DISTDIR/hostdir}

SRCPKGS=$DISTDIR/srcpkgs
XBPS_SRCPKGDIR=$SRCPKGS

XSC="$DISTDIR/xbps-src $CFG_CROSS $CFG_LOCAL $CFG_OVERLAYFS -L $CFG_CMDLINE -m $MASTERDIR -H $HOSTDIR"

if [ -n "$CFG_CROSS" ]; then
	export XBPS_TARGET_ARCH=$CROSS_ARCH
fi

RCV_CMD_LINE="$RCV $CFG_REPO --distdir=${DISTDIR} ${*}"
printf "INFO: Getting list of updates, please wait...\n"
printf "INFO: Running '$RCV_CMD_LINE' (${CROSS_ARCH:-native}) ...\n"

[ -f $RCV_F ] && _append="-a"
$RCV_CMD_LINE | tee ${_append} $RCV_F
rval=${PIPESTATUS[0]}
if [ $rval -ne 0 ]; then
	echo "ERROR: xbps-checkvers exited with an error: $rval"
	exit 1
fi

xbps-uhelper pkgmatch "xbps-$($RCV -V | cut -d' ' -f2)_1" 'xbps>=0.54_1'
case "$?" in
0) # version < 0.54
	grep pkgname "$RCV_F" | awk '{ print $2 }' >pkgs.txt ;;
1) # version >= 0.54
	cut -d' ' -f1 "$RCV_F" >pkgs.txt ;;
*)
	echo "ERROR: couldn't determine xbps-checkvers version"
	exit 1
	;;
esac

printf "INFO: Creating source targets...\n"
rm -rf tobuild built
mkdir -p tobuild built
for p in `cat pkgs.txt`; do
	if [ -f "$SRCPKGS/$p/template" ]; then
		$XSC show-avail $p 2>/dev/null
		if [ $? -eq 0 ]; then
			touch tobuild/$p
		fi
	fi
done

_TOBUILD="`find tobuild -type f`"

concat() {
	local found=0
	for tb in $TOBUILD; do
		if [ "$1" = "$tb" ]; then
			found=1
			break
		fi
	done
	if [ $found -eq 0 ]; then
		TOBUILD="$TOBUILD $1"
	fi
}

getlink() {
	local p="`basename $1`"
	local target="`readlink $SRCPKGS/$p`"
	if [ $? -eq 0 -a -n "$target" ]; then
		p=$target
	fi
	echo $p
}

printf "INFO: Generating a proper list (without subpkgs)...\n"
for tb in $_TOBUILD; do
	concat "`getlink $tb`"
done

if [ "$(command -v xbps-src-make 2>/dev/null)" ]; then
	masterdirarch=$(unset XBPS_ARCH; unset XBPS_TARGET_ARCH; xbps-uhelper -r "$MASTERDIR" arch)
	xbps-src-make \
		-distdir "$DISTDIR" \
		-hostdir "$HOSTDIR" \
		-masterdir "$MASTERDIR" \
		${masterdirarch:+-arch $masterdirarch} \
		${CROSS_ARCH:+-cross ${CROSS_ARCH}} \
		-flags "$CFG_LOCAL $CFG_OVERLAYFS -L $CFG_CMDLINE" \
		$TOBUILD \
		>Makefile
	if [ $? -eq 0 ]; then
		printf "INFO: 'Makefile' generated.\n"
		printf "INFO: Type 'make'\n"
		exit 0
	fi
fi

printf "INFO: Removing old Makefile (if any)...\n"
[ -f Makefile ] && rm -f Makefile
touch Makefile


printf "INFO: Generating standard targets...\n"
printf "# Generated by configure, do not modify.\n\n"		>> Makefile
printf "PKGS = $TOBUILD\n"					>> Makefile
printf "TOBUILD = \$(patsubst %%,tobuild/%%,\$(PKGS))\n"	>> Makefile
printf "BUILT = \$(patsubst tobuild/%%,built/%%,\$(TOBUILD))\n\n"	>> Makefile
printf "all: \$(BUILT)\n"					>> Makefile
printf "\t@echo \"[Done]\"\n\n"					>> Makefile
printf "print_pkgs:\n"						>> Makefile
printf "\t@echo \$(PKGS)\n\n"					>> Makefile
printf "built/%%: tobuild/%%\n"					>> Makefile
printf "\t@echo \"[xbps-src]\t\${@F}\"\n"			>> Makefile
printf "\t@( $XSC pkg \${@F}; rval=\$\$?; [ \$\$rval -eq 2 ] && exit 0 || exit \$\$rval )\n"	>> Makefile
printf "\t@touch \$@\n"						>> Makefile
printf "\t@rm tobuild/\${@F}\n\n"				>> Makefile


printf "INFO: Finding and adding dependencies...\n"
printf "# Dependencies\n"					>> Makefile
for p in $TOBUILD; do
	deps=
	sedcmd="s|[<>].*\$||g"
	_deps="`$XSC show-build-deps $p 2>/dev/null| sed -e \"$sedcmd\"`"
	if [ -z "${_deps}" ]; then
		continue
	fi
	for d in $_deps; do
		found=0
		realdep=`getlink $d`
		for _p in $TOBUILD; do
			if [ "$_p" = "$realdep" ]; then
				found=1
				break;
			fi
		done
		if [ $found -gt 0 ]; then
			deps="$deps built/$realdep"
		fi
	done
	printf "built/$p: $deps\n"				>> Makefile
done

printf "\n"							>> Makefile
printf "clean:\n"						>> Makefile
printf "\t@rm -f built/*\n"					>> Makefile
printf "\t@echo \"[Clean]\"\n\n"				>> Makefile
printf ".PHONY: all print_pkgs clean\n"				>> Makefile

printf "INFO: 'Makefile' generated.\n"
printf "INFO: Type 'make'\n"
exit 0