diff --git a/src/Pure/Admin/build_csdp.scala b/src/Pure/Admin/build_csdp.scala
new file mode 100644
--- /dev/null
+++ b/src/Pure/Admin/build_csdp.scala
@@ -0,0 +1,193 @@
+/*  Title:      Pure/Admin/build_csdp.scala
+    Author:     Makarius
+
+Build Isabelle CSDP component from official downloads.
+*/
+
+package isabelle
+
+
+object Build_CSDP
+{
+  /* build CSDP */
+
+  val component_name = "csdp-6.2.0"
+
+  val source_url = "https://github.com/coin-or/Csdp/archive/releases/6.2.0.tar.gz"
+  val windows_url = "https://github.com/coin-or/Csdp/files/2485584/csdp6.2.0win64.zip"
+
+  sealed case class Flags(platform: String, CFLAGS: String = "", LIBS: String = "")
+  {
+    def print: String =
+      "  * " + platform + ":\n" +
+      List("CFLAGS=" + CFLAGS, "LIBS=" + LIBS).map("    " + _).mkString("\n")
+
+    def change(path: Path)
+    {
+      File.change(path, s =>
+        (for (line <- split_lines(s))
+          yield {
+            line.replaceAll("CFLAGS=.*", "CFLAGS=" + CFLAGS)
+              .replaceAll("LIBS=.*", "LIBS=" + LIBS)
+          }).mkString("\n"))
+    }
+  }
+
+  val build_flags: List[Flags] =
+    List(
+      Flags("arm64-linux",
+        CFLAGS = "-march=native -mtune=native -Ofast -ansi -Wall -DBIT64 -DUSESIGTERM -DUSEGETTIME -I../include",
+        LIBS = "-static -L../lib -lsdp -llapack -lblas -lgfortran -lm"),
+      Flags("x86_64-linux",  // Ubuntu 16.04 LTS
+        CFLAGS = "-march=native -mtune=native -Ofast -ansi -Wall -DBIT64 -DUSESIGTERM -DUSEGETTIME -I../include",
+        LIBS = "-static -L../lib -lsdp -llapack -lblas -lgfortran -lquadmath -lm"),
+      Flags("x86_64-darwin",
+        CFLAGS = "-m64 -Ofast -ansi -Wall -DBIT64 -DUSESIGTERM -DUSEGETTIME -I../include",
+        LIBS = "-L../lib -lsdp -llapack -lblas -lm"))
+
+  def build_csdp(
+    pretend_windows: Boolean = false,
+    verbose: Boolean = false,
+    progress: Progress = new Progress,
+    target_dir: Path = Path.current)
+  {
+    Isabelle_System.with_tmp_dir("build")(tmp_dir =>
+    {
+      val component_dir = Isabelle_System.new_directory(target_dir + Path.basic(component_name))
+      progress.echo("Component " + component_dir)
+
+
+      /* platform */
+
+      val is_windows = Platform.is_windows || pretend_windows
+
+      val (platform_name, windows_name) =
+        if (is_windows) {
+          val Windows_Name = """^.*?([^/]+)\.zip$""".r
+          val windows_name =
+            windows_url match {
+              case Windows_Name(name) => name
+              case _ => error("Failed to determine base name from " + quote(windows_url))
+            }
+          ("x86_64-windows", windows_name)
+        }
+        else {
+          val name =
+            proper_string(Isabelle_System.getenv("ISABELLE_PLATFORM64"))
+              .getOrElse(error("No 64bit platform"))
+          (name, "")
+        }
+
+      val platform_dir = Isabelle_System.make_directory(component_dir + Path.basic(platform_name))
+
+
+      /* download */
+
+      val archive_path = tmp_dir + Path.basic("src.tar.gz")
+      Isabelle_System.download(source_url, archive_path, progress = progress)
+
+      Isabelle_System.bash("tar xzf src.tar.gz", cwd = tmp_dir.file).check
+      val source_name =
+        File.read_dir(tmp_dir).filterNot(_ == "src.tar.gz") match {
+          case List(name) => name
+          case _ => error("Exactly one entry expected in archive " + quote(source_url))
+        }
+      Isabelle_System.bash(
+        "tar xzf " + archive_path + " && mv " + Bash.string(source_name) + " src",
+        cwd = component_dir.file).check
+
+
+      /* build */
+
+      if (is_windows) {
+        Isabelle_System.download(windows_url, tmp_dir + Path.basic("windows.zip"),
+          progress = progress)
+        Isabelle_System.bash("unzip -x windows", cwd = tmp_dir.file).check
+
+        val windows_dir = tmp_dir + Path.explode(windows_name)
+        File.copy(windows_dir + Path.explode("LICENSE"), component_dir)
+        File.copy(windows_dir + Path.explode("bin/csdp.exe"), platform_dir)
+        File.set_executable(platform_dir + Path.basic("csdp.exe"), true)
+      }
+      else {
+        progress.echo("Building CSDP ...")
+
+        val build_dir = tmp_dir + Path.basic(source_name)
+        build_flags.find(flags => flags.platform == platform_name) match {
+          case None => error("No build flags for platform " + quote(platform_name))
+          case Some(flags) => flags.change(build_dir + Path.basic("Makefile"))
+        }
+        Isabelle_System.bash("make",
+          cwd = build_dir.file,
+          progress_stdout = progress.echo_if(verbose, _),
+          progress_stderr = progress.echo_if(verbose, _)).check
+        File.copy(build_dir + Path.explode("solver/csdp"), platform_dir)
+      }
+
+
+      /* settings */
+
+      val etc_dir = Isabelle_System.make_directory(component_dir + Path.basic("etc"))
+      File.write(etc_dir + Path.basic("settings"),
+        """# -*- shell-script -*- :mode=shellscript:
+
+ISABELLE_CSDP="$COMPONENT/${ISABELLE_WINDOWS_PLATFORM64:-$ISABELLE_PLATFORM64}/csdp"
+""")
+
+
+      /* README */
+
+      File.write(component_dir + Path.basic("README"),
+"""This distribution of CSDP is based on the official downloads:
+""" + source_url + """
+""" + windows_url + """
+
+For Linux and macOS, it has been built from sources using the following
+options in the Makefile:
+
+""" + build_flags.map(_.print).mkString("\n\n") + """
+
+For Windows, the existing binary distribution has been used.
+
+Only the bare "csdp" program is required for Isabelle.
+
+
+    Makarius
+    """ + Date.Format.date(Date.now()) + "\n")
+    })
+}
+
+
+  /* Isabelle tool wrapper */
+
+  val isabelle_tool =
+    Isabelle_Tool("build_csdp", "build prover component from official downloads",
+    args =>
+    {
+      var target_dir = Path.current
+      var pretend_windows = false
+      var verbose = false
+
+      val getopts = Getopts("""
+Usage: isabelle build_csdp [OPTIONS]
+
+  Options are:
+    -D DIR       target directory (default ".")
+    -W           pretend that platform is Windows: download binary, no build
+    -v           verbose
+
+  Build prover component from official downloads.
+""",
+        "D:" -> (arg => target_dir = Path.explode(arg)),
+        "W" -> (_ => pretend_windows = true),
+        "v" -> (_ => verbose = true))
+
+      val more_args = getopts(args)
+      if (more_args.nonEmpty) getopts.usage()
+
+      val progress = new Console_Progress()
+
+      build_csdp(pretend_windows = pretend_windows, verbose = verbose, progress = progress,
+        target_dir = target_dir)
+    })
+}
diff --git a/src/Pure/System/isabelle_system.scala b/src/Pure/System/isabelle_system.scala
--- a/src/Pure/System/isabelle_system.scala
+++ b/src/Pure/System/isabelle_system.scala
@@ -1,429 +1,429 @@
 /*  Title:      Pure/System/isabelle_system.scala
     Author:     Makarius
 
 Fundamental Isabelle system environment: quasi-static module with
 optional init operation.
 */
 
 package isabelle
 
 
 import java.io.{File => JFile, IOException}
 import java.nio.file.{Path => JPath, Files, SimpleFileVisitor, FileVisitResult}
 import java.nio.file.attribute.BasicFileAttributes
 
 import scala.annotation.tailrec
 
 
 object Isabelle_System
 {
   /** bootstrap information **/
 
   def jdk_home(): String =
   {
     val java_home = System.getProperty("java.home", "")
     val home = new JFile(java_home)
     val parent = home.getParent
     if (home.getName == "jre" && parent != null &&
         (new JFile(new JFile(parent, "bin"), "javac")).exists) parent
     else java_home
   }
 
   def bootstrap_directory(
     preference: String, envar: String, property: String, description: String): String =
   {
     val value =
       proper_string(preference) orElse  // explicit argument
       proper_string(System.getenv(envar)) orElse  // e.g. inherited from running isabelle tool
       proper_string(System.getProperty(property)) getOrElse  // e.g. via JVM application boot process
       error("Unknown " + description + " directory")
 
     if ((new JFile(value)).isDirectory) value
     else error("Bad " + description + " directory " + quote(value))
   }
 
 
 
   /** implicit settings environment **/
 
   abstract class Service
 
   @volatile private var _settings: Option[Map[String, String]] = None
   @volatile private var _services: Option[List[Class[Service]]] = None
 
   def settings(): Map[String, String] =
   {
     if (_settings.isEmpty) init()  // unsynchronized check
     _settings.get
   }
 
   def services(): List[Class[Service]] =
   {
     if (_services.isEmpty) init()  // unsynchronized check
     _services.get
   }
 
   def make_services[C](c: Class[C]): List[C] =
     for { c1 <- services() if Library.is_subclass(c1, c) }
       yield c1.getDeclaredConstructor().newInstance().asInstanceOf[C]
 
   def init(isabelle_root: String = "", cygwin_root: String = ""): Unit = synchronized
   {
     if (_settings.isEmpty || _services.isEmpty) {
       val isabelle_root1 =
         bootstrap_directory(isabelle_root, "ISABELLE_ROOT", "isabelle.root", "Isabelle root")
 
       val cygwin_root1 =
         if (Platform.is_windows)
           bootstrap_directory(cygwin_root, "CYGWIN_ROOT", "cygwin.root", "Cygwin root")
         else ""
 
       if (Platform.is_windows) Cygwin.init(isabelle_root1, cygwin_root1)
 
       def set_cygwin_root()
       {
         if (Platform.is_windows)
           _settings = Some(_settings.getOrElse(Map.empty) + ("CYGWIN_ROOT" -> cygwin_root1))
       }
 
       set_cygwin_root()
 
       def default(env: Map[String, String], entry: (String, String)): Map[String, String] =
         if (env.isDefinedAt(entry._1) || entry._2 == "") env
         else env + entry
 
       val env =
       {
         val temp_windows =
         {
           val temp = if (Platform.is_windows) System.getenv("TEMP") else null
           if (temp != null && temp.contains('\\')) temp else ""
         }
         val user_home = System.getProperty("user.home", "")
         val isabelle_app = System.getProperty("isabelle.app", "")
 
         default(
           default(
             default(sys.env + ("ISABELLE_JDK_HOME" -> File.standard_path(jdk_home())),
               "TEMP_WINDOWS" -> temp_windows),
             "HOME" -> user_home),
           "ISABELLE_APP" -> "true")
       }
 
       val settings =
       {
         val dump = JFile.createTempFile("settings", null)
         dump.deleteOnExit
         try {
           val cmd1 =
             if (Platform.is_windows)
               List(cygwin_root1 + "\\bin\\bash", "-l",
                 File.standard_path(isabelle_root1 + "\\bin\\isabelle"))
             else
               List(isabelle_root1 + "/bin/isabelle")
           val cmd = cmd1 ::: List("getenv", "-d", dump.toString)
 
           val (output, rc) = process_output(process(cmd, env = env, redirect = true))
           if (rc != 0) error(output)
 
           val entries =
             (for (entry <- File.read(dump).split("\u0000") if entry != "") yield {
               val i = entry.indexOf('=')
               if (i <= 0) entry -> ""
               else entry.substring(0, i) -> entry.substring(i + 1)
             }).toMap
           entries + ("PATH" -> entries("PATH_JVM")) - "PATH_JVM"
         }
         finally { dump.delete }
       }
       _settings = Some(settings)
       set_cygwin_root()
 
       val variable = "ISABELLE_SCALA_SERVICES"
       val services =
         for (name <- space_explode(':', settings.getOrElse(variable, getenv_error(variable))))
         yield {
           def err(msg: String): Nothing =
             error("Bad entry " + quote(name) + " in " + variable + "\n" + msg)
           try { Class.forName(name).asInstanceOf[Class[Service]] }
           catch {
             case _: ClassNotFoundException => err("Class not found")
             case exn: Throwable => err(Exn.message(exn))
           }
         }
       _services = Some(services)
     }
   }
 
 
   /* getenv */
 
   private def getenv_error(name: String): Nothing =
     error("Undefined Isabelle environment variable: " + quote(name))
 
   def getenv(name: String, env: Map[String, String] = settings()): String =
     env.getOrElse(name, "")
 
   def getenv_strict(name: String, env: Map[String, String] = settings()): String =
     proper_string(getenv(name, env)) getOrElse
       error("Undefined Isabelle environment variable: " + quote(name))
 
   def cygwin_root(): String = getenv_strict("CYGWIN_ROOT")
 
   def isabelle_id(): String =
     proper_string(getenv("ISABELLE_ID")) getOrElse
       Mercurial.repository(Path.explode("~~")).parent()
 
 
 
   /** file-system operations **/
 
   /* permissions */
 
   def chmod(arg: String, path: Path): Unit =
     bash("chmod " + arg + " " + File.bash_path(path)).check
 
   def chown(arg: String, path: Path): Unit =
     bash("chown " + arg + " " + File.bash_path(path)).check
 
 
   /* directories */
 
   def make_directory(path: Path): Path =
   {
     if (!path.is_dir) {
       bash("perl -e \"use File::Path make_path; make_path('" + File.standard_path(path) + "');\"")
-      if (!path.is_dir) error("Failed to create directory: " + quote(File.platform_path(path)))
+      if (!path.is_dir) error("Failed to create directory: " + quote(File.platform_path(path.absolute)))
     }
     path
   }
 
   def new_directory(path: Path): Path =
-    if (path.is_dir) error("Directory already exists: " + path)
+    if (path.is_dir) error("Directory already exists: " + quote(File.platform_path(path.absolute)))
     else make_directory(path)
 
   def copy_dir(dir1: Path, dir2: Path): Unit =
     bash("cp -a " + File.bash_path(dir1) + " " + File.bash_path(dir2)).check
 
 
   /* tmp files */
 
   def isabelle_tmp_prefix(): JFile =
   {
     val path = Path.explode("$ISABELLE_TMP_PREFIX")
     path.file.mkdirs  // low-level mkdirs to avoid recursion via Isabelle environment
     File.platform_file(path)
   }
 
   def tmp_file(name: String, ext: String = "", base_dir: JFile = isabelle_tmp_prefix()): JFile =
   {
     val suffix = if (ext == "") "" else "." + ext
     val file = Files.createTempFile(base_dir.toPath, name, suffix).toFile
     file.deleteOnExit
     file
   }
 
   def with_tmp_file[A](name: String, ext: String = "")(body: Path => A): A =
   {
     val file = tmp_file(name, ext)
     try { body(File.path(file)) } finally { file.delete }
   }
 
 
   /* tmp dirs */
 
   def rm_tree(root: Path): Unit = rm_tree(root.file)
 
   def rm_tree(root: JFile)
   {
     root.delete
     if (root.isDirectory) {
       Files.walkFileTree(root.toPath,
         new SimpleFileVisitor[JPath] {
           override def visitFile(file: JPath, attrs: BasicFileAttributes): FileVisitResult =
           {
             try { Files.deleteIfExists(file) }
             catch { case _: IOException => }
             FileVisitResult.CONTINUE
           }
 
           override def postVisitDirectory(dir: JPath, e: IOException): FileVisitResult =
           {
             if (e == null) {
               try { Files.deleteIfExists(dir) }
               catch { case _: IOException => }
               FileVisitResult.CONTINUE
             }
             else throw e
           }
         }
       )
     }
   }
 
   def tmp_dir(name: String, base_dir: JFile = isabelle_tmp_prefix()): JFile =
   {
     val dir = Files.createTempDirectory(base_dir.toPath, name).toFile
     dir.deleteOnExit
     dir
   }
 
   def with_tmp_dir[A](name: String)(body: Path => A): A =
   {
     val dir = tmp_dir(name)
     try { body(File.path(dir)) } finally { rm_tree(dir) }
   }
 
 
   /* quasi-atomic update of directory */
 
   def update_directory(dir: Path, f: Path => Unit)
   {
     val new_dir = dir.ext("new")
     val old_dir = dir.ext("old")
 
     rm_tree(new_dir)
     rm_tree(old_dir)
 
     f(new_dir)
 
     if (dir.is_dir) File.move(dir, old_dir)
     File.move(new_dir, dir)
     rm_tree(old_dir)
   }
 
 
 
   /** external processes **/
 
   /* raw process */
 
   def process(command_line: List[String],
     cwd: JFile = null,
     env: Map[String, String] = settings(),
     redirect: Boolean = false): Process =
   {
     val proc = new ProcessBuilder
     proc.command(command_line:_*)  // fragile on Windows
     if (cwd != null) proc.directory(cwd)
     if (env != null) {
       proc.environment.clear
       for ((x, y) <- env) proc.environment.put(x, y)
     }
     proc.redirectErrorStream(redirect)
     proc.start
   }
 
   def process_output(proc: Process): (String, Int) =
   {
     proc.getOutputStream.close
 
     val output = File.read_stream(proc.getInputStream)
     val rc =
       try { proc.waitFor }
       finally {
         proc.getInputStream.close
         proc.getErrorStream.close
         proc.destroy
         Exn.Interrupt.dispose()
       }
     (output, rc)
   }
 
   def kill(signal: String, group_pid: String): (String, Int) =
   {
     val bash =
       if (Platform.is_windows) List(cygwin_root() + "\\bin\\bash.exe")
       else List("/usr/bin/env", "bash")
     process_output(process(bash ::: List("-c", "kill -" + signal + " -" + group_pid)))
   }
 
 
   /* GNU bash */
 
   def bash(script: String,
     cwd: JFile = null,
     env: Map[String, String] = settings(),
     redirect: Boolean = false,
     progress_stdout: String => Unit = (_: String) => (),
     progress_stderr: String => Unit = (_: String) => (),
     strict: Boolean = true,
     cleanup: () => Unit = () => ()): Process_Result =
   {
     Bash.process(script, cwd = cwd, env = env, redirect = redirect, cleanup = cleanup).
       result(progress_stdout, progress_stderr, strict)
   }
 
   def jconsole(): Process_Result =
     bash("isabelle_jdk jconsole " + java.lang.ProcessHandle.current().pid).check
 
   private lazy val gnutar_check: Boolean =
     try { bash("tar --version").check.out.containsSlice("GNU tar") || error("") }
     catch { case ERROR(_) => false }
 
   def gnutar(
     args: String,
     dir: Path = Path.current,
     original_owner: Boolean = false,
     redirect: Boolean = false): Process_Result =
   {
     val options =
       (if (dir.is_current) "" else "-C " + File.bash_path(dir) + " ") +
       (if (original_owner) "" else "--owner=root --group=staff ")
 
     if (gnutar_check) bash("tar " + options + args, redirect = redirect)
     else error("Expected to find GNU tar executable")
   }
 
   private lazy val curl_check: Unit =
     try { bash("curl --version").check }
     catch { case ERROR(_) => error("Cannot download files: missing curl") }
 
   def download(url: String, file: Path, progress: Progress = new Progress): Unit =
   {
     curl_check
     progress.echo("Getting " + quote(url))
     try {
       bash("curl --fail --silent --location " + Bash.string(url) +
         " > " + File.bash_path(file)).check
     }
     catch { case ERROR(msg) => cat_error("Failed to download " + quote(url), msg) }
   }
 
   def hostname(): String = bash("hostname -s").check.out
 
   def open(arg: String): Unit =
     bash("exec \"$ISABELLE_OPEN\" " + Bash.string(arg) + " >/dev/null 2>/dev/null &")
 
   def pdf_viewer(arg: Path): Unit =
     bash("exec \"$PDF_VIEWER\" " + File.bash_path(arg) + " >/dev/null 2>/dev/null &")
 
   def export_isabelle_identifier(isabelle_identifier: String): String =
     if (isabelle_identifier == "") ""
     else "export ISABELLE_IDENTIFIER=" + Bash.string(isabelle_identifier) + "\n"
 
 
 
   /** Isabelle resources **/
 
   /* repository clone with Admin */
 
   def admin(): Boolean = Path.explode("~~/Admin").is_dir
 
 
   /* components */
 
   def components(): List[Path] =
     Path.split(getenv_strict("ISABELLE_COMPONENTS"))
 
 
   /* default logic */
 
   def default_logic(args: String*): String =
   {
     args.find(_ != "") match {
       case Some(logic) => logic
       case None => Isabelle_System.getenv_strict("ISABELLE_LOGIC")
     }
   }
 }
diff --git a/src/Pure/System/isabelle_tool.scala b/src/Pure/System/isabelle_tool.scala
--- a/src/Pure/System/isabelle_tool.scala
+++ b/src/Pure/System/isabelle_tool.scala
@@ -1,185 +1,186 @@
 /*  Title:      Pure/System/isabelle_tool.scala
     Author:     Makarius
     Author:     Lars Hupel
 
 Isabelle system tools: external executables or internal Scala functions.
 */
 
 package isabelle
 
 import java.net.URLClassLoader
 import scala.reflect.runtime.universe
 import scala.tools.reflect.{ToolBox,ToolBoxError}
 
 
 object Isabelle_Tool
 {
   /* Scala source tools */
 
   abstract class Body extends Function[List[String], Unit]
 
   private def compile(path: Path): Body =
   {
     def err(msg: String): Nothing =
       cat_error(msg, "The error(s) above occurred in Isabelle/Scala tool " + path)
 
     val source = File.read(path)
 
     val class_loader = new URLClassLoader(Array(), getClass.getClassLoader)
     val tool_box = universe.runtimeMirror(class_loader).mkToolBox()
 
     try {
       val symbol = tool_box.parse(source) match {
         case tree: universe.ModuleDef => tool_box.define(tree)
         case _ => err("Source does not describe a module (Scala object)")
       }
       tool_box.compile(universe.Ident(symbol))() match {
         case body: Body => body
         case _ => err("Ill-typed source: Isabelle_Tool.Body expected")
       }
     }
     catch {
       case e: ToolBoxError =>
         if (tool_box.frontEnd.hasErrors) {
           val infos = tool_box.frontEnd.infos.toList
           val msgs = infos.map(info => "Error in line " + info.pos.line + ":\n" + info.msg)
           err(msgs.mkString("\n"))
         }
         else
           err(e.toString)
     }
   }
 
 
   /* external tools */
 
   private def dirs(): List[Path] = Path.split(Isabelle_System.getenv_strict("ISABELLE_TOOLS"))
 
   private def is_external(dir: Path, file_name: String): Boolean =
   {
     val file = (dir + Path.explode(file_name)).file
     try {
       file.isFile && file.canRead &&
         (file_name.endsWith(".scala") || file.canExecute) &&
         !file_name.endsWith("~") && !file_name.endsWith(".orig")
     }
     catch { case _: SecurityException => false }
   }
 
   private def list_external(): List[(String, String)] =
   {
     val Description = """.*\bDESCRIPTION: *(.*)""".r
     for {
       dir <- dirs() if dir.is_dir
       file_name <- File.read_dir(dir) if is_external(dir, file_name)
     } yield {
       val source = File.read(dir + Path.explode(file_name))
       val name = Library.perhaps_unsuffix(".scala", file_name)
       val description =
         split_lines(source).collectFirst({ case Description(s) => s }) getOrElse ""
       (name, description)
     }
   }
 
   private def find_external(name: String): Option[List[String] => Unit] =
     dirs().collectFirst({
       case dir if is_external(dir, name + ".scala") =>
         compile(dir + Path.explode(name + ".scala"))
       case dir if is_external(dir, name) =>
         (args: List[String]) =>
           {
             val tool = dir + Path.explode(name)
             val result = Isabelle_System.bash(File.bash_path(tool) + " " + Bash.strings(args))
             sys.exit(result.print_stdout.rc)
           }
     })
 
 
   /* internal tools */
 
   private lazy val internal_tools: List[Isabelle_Tool] =
     Isabelle_System.make_services(classOf[Isabelle_Scala_Tools]).flatMap(_.tools)
 
   private def list_internal(): List[(String, String)] =
     for (tool <- internal_tools.toList)
       yield (tool.name, tool.description)
 
   private def find_internal(name: String): Option[List[String] => Unit] =
     internal_tools.collectFirst({
       case tool if tool.name == name =>
         args => Command_Line.tool { tool.body(args) }
       })
 
 
   /* command line entry point */
 
   def main(args: Array[String])
   {
     Command_Line.tool {
       args.toList match {
         case Nil | List("-?") =>
           val tool_descriptions =
             (list_external() ::: list_internal()).sortBy(_._1).
               map({ case (a, "") => a case (a, b) => a + " - " + b })
           Getopts("""
 Usage: isabelle TOOL [ARGS ...]
 
   Start Isabelle TOOL with ARGS; pass "-?" for tool-specific help.
 
 Available tools:""" + tool_descriptions.mkString("\n  ", "\n  ", "\n")).usage
         case tool_name :: tool_args =>
           find_external(tool_name) orElse find_internal(tool_name) match {
             case Some(tool) => tool(tool_args)
             case None => error("Unknown Isabelle tool: " + quote(tool_name))
           }
       }
     }
   }
 }
 
 sealed case class Isabelle_Tool(name: String, description: String, body: List[String] => Unit)
 
 class Isabelle_Scala_Tools(val tools: Isabelle_Tool*) extends Isabelle_System.Service
 
 class Tools extends Isabelle_Scala_Tools(
   Build.isabelle_tool,
   Build_Docker.isabelle_tool,
   Doc.isabelle_tool,
   Dump.isabelle_tool,
   Export.isabelle_tool,
   ML_Process.isabelle_tool,
   Mercurial.isabelle_tool,
   Mkroot.isabelle_tool,
   Options.isabelle_tool,
   Phabricator.isabelle_tool1,
   Phabricator.isabelle_tool2,
   Phabricator.isabelle_tool3,
   Phabricator.isabelle_tool4,
   Present.isabelle_tool,
   Profiling_Report.isabelle_tool,
   Server.isabelle_tool,
   Sessions.isabelle_tool,
   Scala_Project.isabelle_tool,
   Update.isabelle_tool,
   Update_Cartouches.isabelle_tool,
   Update_Comments.isabelle_tool,
   Update_Header.isabelle_tool,
   Update_Then.isabelle_tool,
   Update_Theorems.isabelle_tool,
   isabelle.vscode.Grammar.isabelle_tool,
   isabelle.vscode.Server.isabelle_tool)
 
 class Admin_Tools extends Isabelle_Scala_Tools(
+  Build_CSDP.isabelle_tool,
   Build_Cygwin.isabelle_tool,
   Build_Doc.isabelle_tool,
   Build_E.isabelle_tool,
   Build_Fonts.isabelle_tool,
   Build_JDK.isabelle_tool,
   Build_PolyML.isabelle_tool1,
   Build_PolyML.isabelle_tool2,
   Build_SPASS.isabelle_tool,
   Build_SQLite.isabelle_tool,
   Build_Status.isabelle_tool,
   Check_Sources.isabelle_tool,
   Components.isabelle_tool,
   isabelle.vscode.Build_VSCode.isabelle_tool)
diff --git a/src/Pure/build-jars b/src/Pure/build-jars
--- a/src/Pure/build-jars
+++ b/src/Pure/build-jars
@@ -1,312 +1,313 @@
 #!/usr/bin/env bash
 #
 # Author: Makarius
 #
 # build-jars - build Isabelle/Scala
 #
 # Requires proper Isabelle settings environment.
 
 ## sources
 
 declare -a SOURCES=(
   src/HOL/Tools/Nitpick/kodkod.scala
   src/Pure/Admin/afp.scala
+  src/Pure/Admin/build_csdp.scala
   src/Pure/Admin/build_cygwin.scala
   src/Pure/Admin/build_doc.scala
   src/Pure/Admin/build_e.scala
   src/Pure/Admin/build_fonts.scala
   src/Pure/Admin/build_history.scala
   src/Pure/Admin/build_jdk.scala
   src/Pure/Admin/build_log.scala
   src/Pure/Admin/build_polyml.scala
   src/Pure/Admin/build_release.scala
   src/Pure/Admin/build_spass.scala
   src/Pure/Admin/build_sqlite.scala
   src/Pure/Admin/build_status.scala
   src/Pure/Admin/check_sources.scala
   src/Pure/Admin/ci_profile.scala
   src/Pure/Admin/components.scala
   src/Pure/Admin/isabelle_cronjob.scala
   src/Pure/Admin/isabelle_devel.scala
   src/Pure/Admin/jenkins.scala
   src/Pure/Admin/other_isabelle.scala
   src/Pure/Concurrent/consumer_thread.scala
   src/Pure/Concurrent/counter.scala
   src/Pure/Concurrent/delay.scala
   src/Pure/Concurrent/event_timer.scala
   src/Pure/Concurrent/future.scala
   src/Pure/Concurrent/isabelle_thread.scala
   src/Pure/Concurrent/mailbox.scala
   src/Pure/Concurrent/par_list.scala
   src/Pure/Concurrent/synchronized.scala
   src/Pure/GUI/color_value.scala
   src/Pure/GUI/gui.scala
   src/Pure/GUI/gui_thread.scala
   src/Pure/GUI/popup.scala
   src/Pure/GUI/wrap_panel.scala
   src/Pure/General/antiquote.scala
   src/Pure/General/bytes.scala
   src/Pure/General/cache.scala
   src/Pure/General/codepoint.scala
   src/Pure/General/comment.scala
   src/Pure/General/completion.scala
   src/Pure/General/csv.scala
   src/Pure/General/date.scala
   src/Pure/General/exn.scala
   src/Pure/General/file.scala
   src/Pure/General/file_watcher.scala
   src/Pure/General/graph.scala
   src/Pure/General/graph_display.scala
   src/Pure/General/graphics_file.scala
   src/Pure/General/http.scala
   src/Pure/General/json.scala
   src/Pure/General/linear_set.scala
   src/Pure/General/logger.scala
   src/Pure/General/long_name.scala
   src/Pure/General/mercurial.scala
   src/Pure/General/multi_map.scala
   src/Pure/General/output.scala
   src/Pure/General/path.scala
   src/Pure/General/position.scala
   src/Pure/General/pretty.scala
   src/Pure/General/properties.scala
   src/Pure/General/rdf.scala
   src/Pure/General/scan.scala
   src/Pure/General/sha1.scala
   src/Pure/General/sql.scala
   src/Pure/General/ssh.scala
   src/Pure/General/symbol.scala
   src/Pure/General/time.scala
   src/Pure/General/timing.scala
   src/Pure/General/untyped.scala
   src/Pure/General/url.scala
   src/Pure/General/utf8.scala
   src/Pure/General/uuid.scala
   src/Pure/General/value.scala
   src/Pure/General/word.scala
   src/Pure/General/xz.scala
   src/Pure/Isar/document_structure.scala
   src/Pure/Isar/keyword.scala
   src/Pure/Isar/line_structure.scala
   src/Pure/Isar/outer_syntax.scala
   src/Pure/Isar/parse.scala
   src/Pure/Isar/token.scala
   src/Pure/ML/ml_console.scala
   src/Pure/ML/ml_lex.scala
   src/Pure/ML/ml_process.scala
   src/Pure/ML/ml_statistics.scala
   src/Pure/ML/ml_syntax.scala
   src/Pure/PIDE/byte_message.scala
   src/Pure/PIDE/command.scala
   src/Pure/PIDE/command_span.scala
   src/Pure/PIDE/document.scala
   src/Pure/PIDE/document_id.scala
   src/Pure/PIDE/document_status.scala
   src/Pure/PIDE/editor.scala
   src/Pure/PIDE/headless.scala
   src/Pure/PIDE/line.scala
   src/Pure/PIDE/markup.scala
   src/Pure/PIDE/markup_tree.scala
   src/Pure/PIDE/protocol.scala
   src/Pure/PIDE/protocol_handlers.scala
   src/Pure/PIDE/protocol_message.scala
   src/Pure/PIDE/prover.scala
   src/Pure/PIDE/query_operation.scala
   src/Pure/PIDE/rendering.scala
   src/Pure/PIDE/resources.scala
   src/Pure/PIDE/session.scala
   src/Pure/PIDE/text.scala
   src/Pure/PIDE/xml.scala
   src/Pure/PIDE/yxml.scala
   src/Pure/ROOT.scala
   src/Pure/System/bash.scala
   src/Pure/System/command_line.scala
   src/Pure/System/cygwin.scala
   src/Pure/System/distribution.scala
   src/Pure/System/getopts.scala
   src/Pure/System/isabelle_charset.scala
   src/Pure/System/isabelle_fonts.scala
   src/Pure/System/isabelle_platform.scala
   src/Pure/System/isabelle_process.scala
   src/Pure/System/isabelle_system.scala
   src/Pure/System/isabelle_tool.scala
   src/Pure/System/java_statistics.scala
   src/Pure/System/linux.scala
   src/Pure/System/numa.scala
   src/Pure/System/options.scala
   src/Pure/System/platform.scala
   src/Pure/System/posix_interrupt.scala
   src/Pure/System/process_result.scala
   src/Pure/System/progress.scala
   src/Pure/System/scala.scala
   src/Pure/System/system_channel.scala
   src/Pure/System/tty_loop.scala
   src/Pure/Thy/bibtex.scala
   src/Pure/Thy/export.scala
   src/Pure/Thy/export_theory.scala
   src/Pure/Thy/file_format.scala
   src/Pure/Thy/html.scala
   src/Pure/Thy/latex.scala
   src/Pure/Thy/present.scala
   src/Pure/Thy/sessions.scala
   src/Pure/Thy/thy_element.scala
   src/Pure/Thy/thy_header.scala
   src/Pure/Thy/thy_syntax.scala
   src/Pure/Tools/build.scala
   src/Pure/Tools/build_docker.scala
   src/Pure/Tools/check_keywords.scala
   src/Pure/Tools/debugger.scala
   src/Pure/Tools/doc.scala
   src/Pure/Tools/dump.scala
   src/Pure/Tools/fontforge.scala
   src/Pure/Tools/main.scala
   src/Pure/Tools/mkroot.scala
   src/Pure/Tools/phabricator.scala
   src/Pure/Tools/print_operation.scala
   src/Pure/Tools/profiling_report.scala
   src/Pure/Tools/scala_project.scala
   src/Pure/Tools/server.scala
   src/Pure/Tools/server_commands.scala
   src/Pure/Tools/simplifier_trace.scala
   src/Pure/Tools/spell_checker.scala
   src/Pure/Tools/task_statistics.scala
   src/Pure/Tools/update.scala
   src/Pure/Tools/update_cartouches.scala
   src/Pure/Tools/update_comments.scala
   src/Pure/Tools/update_header.scala
   src/Pure/Tools/update_then.scala
   src/Pure/Tools/update_theorems.scala
   src/Pure/library.scala
   src/Pure/pure_thy.scala
   src/Pure/term.scala
   src/Pure/term_xml.scala
   src/Pure/thm_name.scala
   src/Tools/Graphview/graph_file.scala
   src/Tools/Graphview/graph_panel.scala
   src/Tools/Graphview/graphview.scala
   src/Tools/Graphview/layout.scala
   src/Tools/Graphview/main_panel.scala
   src/Tools/Graphview/metrics.scala
   src/Tools/Graphview/model.scala
   src/Tools/Graphview/mutator.scala
   src/Tools/Graphview/mutator_dialog.scala
   src/Tools/Graphview/mutator_event.scala
   src/Tools/Graphview/popups.scala
   src/Tools/Graphview/shapes.scala
   src/Tools/Graphview/tree_panel.scala
   src/Tools/VSCode/src/build_vscode.scala
   src/Tools/VSCode/src/channel.scala
   src/Tools/VSCode/src/document_model.scala
   src/Tools/VSCode/src/dynamic_output.scala
   src/Tools/VSCode/src/grammar.scala
   src/Tools/VSCode/src/preview_panel.scala
   src/Tools/VSCode/src/protocol.scala
   src/Tools/VSCode/src/server.scala
   src/Tools/VSCode/src/state_panel.scala
   src/Tools/VSCode/src/vscode_rendering.scala
   src/Tools/VSCode/src/vscode_resources.scala
   src/Tools/VSCode/src/vscode_spell_checker.scala
 )
 
 
 ## diagnostics
 
 PRG="$(basename "$0")"
 
 function usage()
 {
   echo
   echo "Usage: isabelle $PRG [OPTIONS]"
   echo
   echo "  Options are:"
   echo "    -f           fresh build"
   echo
   exit 1
 }
 
 function fail()
 {
   echo "$1" >&2
   exit 2
 }
 
 [ -z "$ISABELLE_HOME" ] && fail "Missing Isabelle settings environment"
 
 
 ## process command line
 
 # options
 
 FRESH=""
 
 while getopts "f" OPT
 do
   case "$OPT" in
     f)
       FRESH=true
       ;;
     \?)
       usage
       ;;
   esac
 done
 
 shift $(($OPTIND - 1))
 
 
 # args
 
 [ "$#" -ne 0 ] && usage
 
 
 ## target
 
 TARGET_DIR="lib/classes"
 TARGET_JAR="$TARGET_DIR/Pure.jar"
 TARGET_SHASUM="$TARGET_DIR/Pure.shasum"
 
 function target_shasum()
 {
   shasum -a1 -b "$TARGET_JAR" "${SOURCES[@]}" 2>/dev/null
 }
 
 function target_clean()
 {
   rm -rf "$TARGET_DIR"
 }
 
 [ -n "$FRESH" ] && target_clean
 
 
 ## build
 
 target_shasum | cmp "$TARGET_SHASUM" >/dev/null 2>/dev/null
 if [ "$?" -ne 0 ]; then
   echo "### Building Isabelle/Scala ..."
 
   target_clean
 
   BUILD_DIR="$TARGET_DIR/build"
   mkdir -p "$BUILD_DIR"
 
   (
     export CLASSPATH="$(platform_path "$ISABELLE_CLASSPATH")"
     isabelle_scala scalac $ISABELLE_SCALAC_OPTIONS \
       -d "$BUILD_DIR" "${SOURCES[@]}"
   ) || fail "Failed to compile sources"
 
   CHARSET_SERVICE="META-INF/services/java.nio.charset.spi.CharsetProvider"
   mkdir -p "$BUILD_DIR/$(dirname "$CHARSET_SERVICE")"
   echo isabelle.Isabelle_Charset_Provider > "$BUILD_DIR/$CHARSET_SERVICE"
 
   cp "$ISABELLE_HOME/lib/logo/isabelle_transparent-32.gif" "$BUILD_DIR/isabelle/."
   cp "$ISABELLE_HOME/lib/logo/isabelle_transparent.gif" "$BUILD_DIR/isabelle/."
 
   isabelle_jdk jar -c -f "$(platform_path "$TARGET_JAR")" -e isabelle.Main \
     -C "$BUILD_DIR" META-INF \
     -C "$BUILD_DIR" isabelle || fail "Failed to produce $TARGET_JAR"
 
   rm -rf "$BUILD_DIR"
 
   target_shasum > "$TARGET_SHASUM"
 fi