basic setup for Isabelle build tool;

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/Tools/build	Tue Jul 17 15:56:19 2012 +0200
@@ -0,0 +1,78 @@
+#!/usr/bin/env bash
+#
+# Author: Makarius
+#
+# DESCRIPTION: build and manage Isabelle sessions
+
+
+## diagnostics
+
+PRG="$(basename "$0")"
+
+function usage()
+{
+  echo
+  echo "Usage: isabelle $PRG [OPTIONS] [SESSIONS ...]"
+  echo
+  echo "  Options are:"
+  echo "    -a           all sessions"
+  echo "    -b           build target images"
+  echo "    -l           list sessions only"
+  echo "    -o OPTION    override session configuration OPTION (via NAME=VAL or NAME)"
+  echo
+  echo "  Build and manage Isabelle sessions, depending on implicit"
+  echo "  ISABELLE_BUILD_OPTIONS=\"$ISABELLE_BUILD_OPTIONS\""
+  echo
+  echo "  ML_PLATFORM=\"$ML_PLATFORM\""
+  echo "  ML_HOME=\"$ML_HOME\""
+  echo "  ML_SYSTEM=\"$ML_SYSTEM\""
+  echo "  ML_OPTIONS=\"$ML_OPTIONS\""
+  echo
+  exit 1
+}
+
+function fail()
+{
+  echo "$1" >&2
+  exit 2
+}
+
+
+## process command line
+
+ALL_SESSIONS=false
+BUILD_IMAGES=false
+LIST_ONLY=false
+
+eval "declare -a BUILD_OPTIONS=($ISABELLE_BUILD_OPTIONS)"
+
+while getopts "ablo:" OPT
+do
+  case "$OPT" in
+    a)
+      ALL_SESSIONS="true"
+      ;;
+    b)
+      BUILD_IMAGES="true"
+      ;;
+    l)
+      LIST_ONLY="true"
+      ;;
+    o)
+      BUILD_OPTIONS["${#BUILD_OPTIONS[@]}"]="$OPTARG"
+      ;;
+    \?)
+      usage
+      ;;
+  esac
+done
+
+shift $(($OPTIND - 1))
+
+
+## main
+
+[ -e "$ISABELLE_HOME/Admin/build" ] && { "$ISABELLE_HOME/Admin/build" jars || exit $?; }
+
+exec "$ISABELLE_TOOL" java isabelle.Build \
+  "$ALL_SESSIONS" "$BUILD_IMAGES" "$LIST_ONLY" "${BUILD_OPTIONS[@]}" $'\n' "$@"

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Pure/System/build.scala	Tue Jul 17 15:56:19 2012 +0200
@@ -0,0 +1,60 @@
+/*  Title:      Pure/System/build.scala
+    Author:     Makarius
+
+Build and manage Isabelle sessions.
+*/
+
+package isabelle
+
+
+object Build
+{
+  /* command line entry point */
+
+  private object Bool
+  {
+    def unapply(s: String): Option[Boolean] =
+      s match {
+        case "true" => Some(true)
+        case "false" => Some(false)
+        case _ => None
+      }
+  }
+
+  def main(args: Array[String])
+  {
+    def bad_args()
+    {
+      java.lang.System.err.println("Bad arguments: " + args.toString)
+      sys.exit(2)
+    }
+
+    args.toList match {
+      case Bool(all_sessions) :: Bool(build_images) :: Bool(list_only) :: rest =>
+        rest.indexWhere(_ == "\n") match {
+          case -1 => bad_args()
+          case i =>
+            val (options, rest1) = rest.splitAt(i)
+            val sessions = rest1.tail
+            val rc = build(all_sessions, build_images, list_only, options, sessions)
+            sys.exit(rc)
+        }
+      case _ => bad_args()
+    }
+  }
+
+
+  /* build */
+
+  def build(all_sessions: Boolean, build_images: Boolean, list_only: Boolean,
+    options: List[String], sessions: List[String]): Int =
+  {
+    val rc = 1
+
+    println("options = " + options.toString)
+    println("sessions = " + sessions.toString)
+
+    rc
+  }
+}
+

--- a/src/Pure/build-jars	Tue Jul 17 14:33:23 2012 +0200
+++ b/src/Pure/build-jars	Tue Jul 17 15:56:19 2012 +0200
@@ -39,6 +39,7 @@
   PIDE/text.scala
   PIDE/xml.scala
   PIDE/yxml.scala
+  System/build.scala
   System/event_bus.scala
   System/gui_setup.scala
   System/invoke_scala.scala