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powershell 0.9-6
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<chapter>
<title>Building PowerShell</title>
<para>
    This chapter explains the procedure of compiling PowerShell from
    the source code.  If you do not want to do this, feel free to
    grab a precompiled 
    <ulink url="http://www.rpm.org/"><citetitle>RPM</citetitle></ulink> or
    <ulink url="http://www.debian.org/"><citetitle>Debian package</citetitle></ulink>
    of PowerShell.
    <note><title>Note</title>
        <para>
	    This follows the same procedure as most 
	    <ulink url="http://www.gnu.org/"><citetitle>GNU</citetitle></ulink>
	    software, so if you are familiar with the configure/make/make install
	    procedure, you may skip this section.
	</para>
    </note>
</para>

    
<sect1 id="powershell-configuring">
    <title>Configuring PowerShell</title>
    <sect2>
    <title>The General Case</title>
    <para>
	PowerShell uses GNU
	<ulink url="http://www.gnu.org/software/autoconf/autoconf.html">
	<citetitle>autoconf</citetitle></ulink>, like most GNU software,
	and has a pretty standard build procedure.  In the simplest case,
	configuring PowerShell consists of the following (you must be in the
	directory where you unpacked the source.)
    </para>

    <para>
        <ProgramListing>
            ./configure
        </ProgramListing>
    </para>

    <para>
        This will check your system for some standard libraries as well as
	make sure that you have the proper version of GTK+ and gnome-libs.
	If all is well, it will create the Makefile for the program.  Since
	you did not specify otherwise, it will install it under
	<Literal>/usr/local</Literal>.
    </para>
    </sect2>

    <sect2>
    <title>Specifying Options</title>
    <para>
        PowerShell's configure script currently does not have many useful
	arguments.  The only one which is really of any use is the
	<Literal>--prefix</Literal> option.  It works like this:
    </para>

    <para>
        <ProgramListing>
	    ./configure --prefix=/usr
	</ProgramListing>
    </para>

    <para>
        This tells configure that you want to install PowerShell in
	<Literal>/usr</Literal> rather than <Literal>/usr/local</Literal>.
	The binary will be installed in <Literal>/usr/bin</Literal> rather
	than <Literal>/usr/local/bin</Literal>.
    </para>        
 
    </sect2>

    <sect2>
    <title><Literal>configure</Literal>'s output</title>
    <para>
        If all goes well, you should see output such as the following:
    </para>

    <para>
        <ProgramListing>
	    creating cache ./config.cache
	    checking for gcc... gcc
	    checking whether the C compiler (gcc  ) works... yes
	    checking whether the C compiler (gcc  ) is a cross-compiler... no
	    checking whether we are using GNU C... yes
	    checking whether gcc accepts -g... yes
	    checking for a BSD compatible install... /usr/bin/install -c
	    checking for GTK+ 1.2 or greater... yes
	    checking for Gnome 1.0.13 or greater... yes
	    checking for gdk_imlib_init in -lgdk_imlib... yes
	    checking for login_tty in -lutil... yes
	    checking for zvt_term_match_add in -lzvt... yes
	    checking for zvt_term_match_check in -lzvt... yes
	    checking how to run the C preprocessor... gcc -E
	    checking for ANSI C header files... no
	    checking for fcntl.h... yes
	    checking for sys/time.h... yes
	    checking for unistd.h... yes
	    checking for strstr... no
	    updating cache ./config.cache
	    creating ./config.status
	    creating Makefile
	    creating config.h
	</ProgramListing>
    </para>    
    <para>
        One difference you may notice is that <Literal>configure</Literal>
	may not be able to find <Literal>zvt_term_match_add</Literal> or
	<Literal>zvt_term_match_check</Literal>.  This means your version of
	gnome-libs is relatively old and doesn't support URL matching in
	<Literal>ZvtTerm</Literal> (which is what PowerShell uses to draw
	the terminal itself).  This will not prevent you from compiling and
	running PowerShell successfully, but it will not be compiled with
	support for URL matching.
    </para>
    </sect2>
    <sect2>
    <title>Troubleshooting</title>
    <para>
        If all is not well, you may need to
	examine config.log and see exactly what happened.  In most cases,
	this happens when either your library versions are too old or
	configure is finding the wrong version of gtk-config or gnome-config.
	Check your PATH variable to make sure the correct one (the one from
	the newest version you have installed) comes before the older versions
	in your path.  Or even better, delete the older versions.
    </para>
    <para>
        This is the first program I've written that uses a 
	<Literal>configure</Literal> script, and because of this there may
	be bugs in it.  One has been reported to be when running under Solaris,
	but there may be others.
    </para>
    </sect2>
</sect1>

<sect1 id="powershell-compiling">
    <title>Compiling PowerShell</title>
    <sect2>
    <title>Running <Literal>make</Literal></title>
    <para>
        If you have not yet configured PowerShell, please go back
	and read the section on 
	<link linkend="powershell-configuring">configuring PowerShell</link>.
    </para>
    <para>
        Once you have successfully configured PowerShell, you are ready to
	build it.  This is the easiest step of all - just a simple command:
    </para>
    <para>
        <ProgramListing>
	    make
	</ProgramListing>
    </para>
    <para>
        This should go through each source file and compile it.  You will see
	output from <Literal>gcc</Literal> (the C compiler) at this point.
	There should not be any problems at this point - if there are, please
	let me know.
    </para>
    </sect2>
</sect1>
<sect1>
    <title>Final Steps</title>
    <sect2>
    <title>Installing PowerShell</title>
    <para>
        Once you have successfully compiled PowerShell, installing it is
	easy.  All it takes is:
    </para>
    <para>
        <ProgramListing>
	    make install
	</ProgramListing>
    </para>
    <para>
        This will install PowerShell in the directory you specified when you
	were configuring it (or <Literal>/usr/local/bin</Literal> if you didn't
	specify anything.)
    </para>
    <para>
        At this point, if you wish, you can delete the whole directory containing
	the source for PowerShell.
    </para>
    </sect2>
    <sect2>
    <title>Running PowerShell</title>
    <para>
        Once PowerShell is installed, you can run it by typing
	<Literal>/path/to/powershell</Literal> (obviously, replace
	<Literal>/path/to</Literal> with the directory in which you installed
	it.)  If the directory is in your current path (such as
	<Literal>/usr/bin</Literal> or possibly <Literal>/usr/local/bin</Literal>),
	you may just type <Literal>powershell</Literal>.
    </para>
    </sect2>
</sect1>
</chapter>