dovecot: improved package config preparing for a more generic auto-configuration

mail/dovecot/dovecot.conf

@@ -15,16 +15,27 @@
 # install development headers by default
 var_append confopt ' ' "--enable-header-install"
 
-# LDAP support
-if pkginstalled openldap ; then
-        pkgprefix -t openldap
-        var_append extraconfopt ' ' "--with-ldap"
-fi
+# package/option mappings for auto-configuration
+pkg_dovecot_options="openldap:ldap postgresql:pgsql"
 
-# generic SQL support
-var_append extraconfopt ' ' "--with-sql=plugin"
-
-# postgresql support
-if pkginstalled -f postgresql; then
-	var_append extraconfopt ' ' "--with-pgsql"
-fi
+# automatic feature selection according to the package/option mappings
+pkg_dovecot_autoconfig() {
+	local args="$@"
+	for x in $args; do
+		local package="${x%:*}"
+		local option="${x#*:}"
+		[ ! -z "$option" ] || option="$package"
+		if pkginstalled -f "$package"; then
+			pkgprefix -t "$package"
+			var_append extraconfopt ' ' "--with-$option"
+			case $package in
+				*sql*) enable_sql=true ;;
+			esac
+		fi
+	done
+	# generic SQL support/build drivers as plugins
+	if $enable_sql; then
+		var_append extraconfopt ' ' "--with-sql=plugin"
+	fi
+}
+pkg_dovecot_autoconfig "$pkg_dovecot_options"