private Path computeBootClassPath() {
bootClassPathRtJar = null;
String optionValue;
Path path = new Path();
path.addFiles(options.get(XBOOTCLASSPATH_PREPEND));
if ((optionValue = options.get(ENDORSEDDIRS)) != null) path.addDirectories(optionValue);
else path.addDirectories(System.getProperty("java.endorsed.dirs"), false);
if ((optionValue = options.get(BOOTCLASSPATH)) != null) {
path.addFiles(optionValue);
} else {
// Standard system classes for this compiler's release.
String files = System.getProperty("sun.boot.class.path");
path.addFiles(files, false);
File rt_jar = new File("rt.jar");
for (File file : getPathEntries(files)) {
if (new File(file.getName()).equals(rt_jar)) bootClassPathRtJar = file;
}
}
path.addFiles(options.get(XBOOTCLASSPATH_APPEND));
// Strictly speaking, standard extensions are not bootstrap
// classes, but we treat them identically, so we'll pretend
// that they are.
if ((optionValue = options.get(EXTDIRS)) != null) path.addDirectories(optionValue);
else path.addDirectories(System.getProperty("java.ext.dirs"), false);
return path;
}
