For Cywin.

This is similar to Linux or UNIX. The main difference is that typically one is using Java development software installed for Windows itself (not Cygwin). This means that the CLASSPATH value--which is interpretted by the Java platform--should identify directories and files through Windows-style paths, instead the equivalent UNIX-style path.

Before trying to install hpjdk, ensure your environment is set up so that the javac and java commands are working correctly from the Cygwin prompt.

Download hpjdk-1.0.tar.gz. In a suitable parent directory, execute a command such as

$$\begin{minipage}[t]{\linewidth}\small\begin{verbatim}tar xvfz hpjdk-1.0.tar.gz\end{verbatim}\end{minipage}$$

to unpack the archive. For illustration, we assume you run this command in the directory /home/myid/. On success, it creates a directory /home/myid/hpjdk/.

Now you must set three environment variables correctly. First you need to create an environment variable HPJAVA_HOME, pointing to the directory under which hpjdk is installed. Then you need to add the directories hpjdk/classes/ and hpjdk/classes/multithreaded/ to your CLASSPATH environment variable. Finally, you should add the directory hpjdk/bin/ to your PATH environment variable. For reasons discussed above, paths in HPJAVA_HOME and CLASSPATH must be translated to the equivalent Windows-style paths. For illustration we assume that Cygwin in installed in the folder c:\cygwin\. Then you can set the required variables by adding the following lines to the file .bashrc in your home directory:

$$\begin{minipage}[t]{\linewidth}\small\begin{tabbing} \verb\v... ...yid}\verb\vert/hpjdk/bin:$PATH\vert \end{tabbing}\end{minipage}$$

As advertised, the paths in HPJAVA_HOME and CLASSPATH are basically in Windows format. We took advantage of the leniency of typical Java systems, which tolerate either forward slash or backslash (using backslash would be more tedious, because backslash is the escape character of the UNIX shell). The value of CLASSPATH is quoted, to make sure that the Windows-style semicolon path separator is not interpretted as the shell command terminator. Notice that the PATH environment variable is not subject to these complications, because it is processed by the Cygwin shell itself, not by any Windows-based software. But for this reason we can't reuse the HPJAVA_HOME value in setting PATH here--it is in the wrong style.

After making these edits to .bashrc, start a new Cygwin shell.