added -u option for recursively build and upgrade dependencies

abuild

@@ -397,15 +397,19 @@ find_aport() {
 builddeps() {
 	local dep pkg
 	for dep in $depends $makedepends; do
-		apk_info -e $dep && continue
+		[ -z "$upgrade" ] && apk_info -e $dep && continue
 		[ -z "$recursive" ] && die "Missing dependency $dep. Use -r to build recursively"
-		# sudo apk_add $dep && continue
-		pkg=$(find_aport $dep) || die "failed to find dependency $dep"
+		pkg=$(find_aport $dep) 
+		if [ -z "$pkg" ]; then
+			# try install from system repo as fallback
+			apk_add ${upgrade:+-u} $dep && continue
+			die "Failed to find dependency $dep"
+		fi
 		# recursively build deps
 		msg "Entering ${pkg%/*}"
 		cd ${pkg%/*} 
-		$0 -r || return 1
-		sudo apk_add $pkg
+		$0 -r ${upgrade:+-u} || return 1
+		sudo apk_add ${upgrade:+-u} $pkg
 	done
 }
 
@@ -415,8 +419,9 @@ usage() {
 	echo "Options:"
 	echo " -h  Show this help"
 	echo " -f  Force specified cmd, even if they are already done"
-	echo " -r  Recursively build and install dependencies (using sudo)"
 	echo " -q  Quiet"
+	echo " -r  Recursively build and install missing dependencies (using sudo)"
+	echo " -u  Recursively build and upgrade dependencies (using sudo)"
 	echo ""
 	echo "Commands:"
 	echo "  checksum    Generate checksum to be included in $APKBUILD"
@@ -448,12 +453,14 @@ checksum() {
 
 APKBUILD="${APKBUILD:-./APKBUILD}"
 
-while getopts "hfqr" opt; do
+while getopts "hfqru" opt; do
 	case $opt in
 		'h') usage;;
 		'f') force=1;;
 		'q') quiet=1;;
 		'r') recursive=1;;
+		'u') upgrade=1
+		     recursive=1;;
 	esac
 done
 shift $(( $OPTIND - 1 ))