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libgtop/doc/gnome-hackers.sgml
Martin Baulig dc88112433 added information about latest changes in 'acinclude.m4' and
* doc/gnome-hackers.sgml: added information about latest
changes in 'acinclude.m4' and 'gtopConf.sh.in'.
1998-05-21 20:34:06 +00:00

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<!-- $Id$ -->
<!doctype book PUBLIC "-//Davenport//DTD DocBook V3.0//EN" [
<!entity gtopConf.sh SYSTEM "../gtopConf.sh" >
]>
<book>
<bookinfo>
<title>Using LibGTop in the Gnome Project</title>
<authorgroup>
<author>
<firstname>Martin</firstname>
<surname>Baulig</surname>
<affiliation>
<address>
<email>martin@home-of-linux.org</email>
</address>
</affiliation>
</author>
</authorgroup>
<copyright>
<year>1998</year>
<holder>Martin Baulig</holder>
</copyright>
<legalnotice>
<para>
This documentation is free software; you can redistribute
it and/or modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later
version.
<para>
This library is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU General Public License for more
details.
<para>
You should have received a copy of the GNU General Public
License along with this program; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
MA 02111-1307 USA
<para>
For more details see the file COPYING in the source
distribution of LibGTop.</para>
</legalnotice>
<abstract>
<para>
This is a short introduction in how to use
<productname>libgtop</productname> in the GNOME project.
It describes the additional options <filename>configure</filename>
takes and the information stored in the automatically generated
<filename>gtopConf.sh</filename> configuration script.
</abstract>
</bookinfo>
<toc></toc>
<chapter id="configure">
<title>Configuration</title>
<para>
The <filename>configure</filename> script of <productname>libgtop</productname>
takes some non-standard options to let you decide which parts of the library
should be build.
<itemizedlist>
<listitem>
<para>
Normally, <filename>configure</filename> decides whether or not using the
server is required. Depending upon this decision, it adds either
<literal>-lgtop</literal> (when it's needed) or
<literal>-lgtop_systems</literal> (when it's not needed) to
<parameter>GTOP_LIBS</parameter> and <parameter>GTOP_GUILE_LIBS</parameter>.
<para>
You can change this behaviour with the following options:
<variablelist>
<varlistentry>
<term><parameter>--enable-libgtop-server</parameter>
<listitem>
<para>
Use the server regardless whether or not it is required.
<varlistentry>
<term><parameter>--disable-libgtop-server</parameter></term>
<listitem>
<para>
Do not use the server regardless wheter or not it is required.
</variablelist>
<listitem>
<para>
Normally, the guile interface of <productname>libgtop</productname> is build
when <productname>guile</productname> can be found on the system.
<variablelist>
<varlistentry>
<term><parameter>--disable-libgtop-guile</parameter>
<listitem>
<para>
Disables building the guile interface even if you have
<productname>guile</productname> installed.
<varlistentry>
<term><parameter>--enable-libgtop-guile</parameter></term>
<listitem>
<para>
Has no effect at all since you cannot build the guile interface without
having <productname>guile</productname> installed on your system.
</variablelist>
<listitem>
<para>
If you do not need the <filename>names</filename> subdirs, you can disable
their building with the following option:
when <productname>guile</productname> can be found on the system.
<variablelist>
<varlistentry>
<term><parameter>--disable-libgtop-names</parameter>
<listitem>
<para>
Disables building of the <filename>names</filename> subdirs.
<varlistentry>
<term><parameter>--enable-libgtop-names</parameter></term>
<listitem>
<para>
Is the default.
</variablelist>
<listitem>
<para>
To disable building of the examples, you can say:
<variablelist>
<varlistentry>
<term><parameter>--without-examples</parameter>
<listitem>
<para>
Disables building of the examples.
</variablelist>
</itemizedlist>
<chapter id="gtopConf">
<title>The <filename>gtopConf.sh</filename> script</title>
<para>
After a successful build of <productname>libgtop</productname>, a
<filename>gtopConf.sh</filename> script is generated which will later
be used to decide how to link a program with <filename>libgtop</filename>.
<para>
It defines the following variables:
<variablelist>
<varlistentry>
<term><parameter>GTOP_LIBDIR</parameter>
<listitem>
<para>
Defaults to <literal>$(prefix)/lib</literal>. It is the directory
where the <productname>libgtop</productname> libraries get installed.
<varlistentry>
<term><parameter>GTOP_INCLUDEDIR</parameter></term>
<listitem>
<para>
Defaults to <literal>$(prefix)/include</literal>. It is the directory
where the <productname>libgtop</productname> header files get installed.
<varlistentry>
<term><parameter>GTOP_LIBS</parameter></term>
<listitem>
<para>
Contains everything that you need to add to the <parameter>_LDADD</parameter>
variable of <productname>automake</productname> to link a program with
<productname>libgtop</productname>.
<varlistentry>
<term><parameter>GTOP_INCS</parameter></term>
<listitem>
<para>
Contains everything that you need to add to the <parameter>_INCLUDES</parameter>
variable of <productname>automake</productname> to compile a program that uses
<productname>libgtop</productname>.
<varlistentry>
<term><parameter>GTOP_GUILE_INCS</parameter></term>
<listitem>
<para>
Contains everything that you need to add to the <parameter>_INCLUDES</parameter>
variable of <productname>automake</productname> to compile a program that uses both
<productname>libgtop</productname> and its guile interface.
<varlistentry>
<term><parameter>GTOP_BINDIR</parameter></term>
<listitem>
<para>
Defaults to <literal>$(bindir)</literal>. It is the directory where the
<productname>libgtop</productname> binaries get installed.
<varlistentry>
<term><parameter>GTOP_SERVER</parameter></term>
<listitem>
<para>
Defaults to <literal>$(bindir)/gtop_server</literal>. It is the full pathname
where the server gets installed.
<varlistentry>
<term><parameter>GTOP_SYSDEPS_DIR</parameter></term>
<listitem>
<para>
The sysdeps directory that is used on your system.
<varlistentry>
<term><parameter>GTOP_NEED_SERVER</parameter></term>
<listitem>
<para>
Is either <literal>yes</literal> or <literal>no</literal> and tells you
whether using the server is needed or not.
<varlistentry>
<term><parameter>GTOP_USE_MACHINE_H</parameter></term>
<listitem>
<para>
Is either <literal>yes</literal> or <literal>no</literal> and tells you
whether <filename>glibtop_machine_h</filename> should be included in
<filename>glibtop.h</filename>.
The system dependent part of the library may provide an additional header
file, <filename>glibtop_machine_h</filename>. In this case, they define
a structure <structname>_glibtop_machine</structname> in this header file.
This structure represents the <structfield>machine</structfield> member of
<structname>_glibtop</structname>.
<varlistentry>
<term><parameter>GTOP_GUILE_FOUND</parameter></term>
<listitem>
<para>
Is either <literal>yes</literal> or <literal>no</literal> and tells you
whether <productname>guile</productname> has been found on your system
(or if building the guile interface was disabled).
<varlistentry>
<term><parameter>GTOP_WANT_NAMES</parameter></term>
<listitem>
<para>
Is either <literal>yes</literal> or <literal>no</literal> and tells you
whether the <filename>sysdeps/names</filename> subdirectory was build.
<varlistentry>
<term><parameter>GTOP_WANT_GUILE_NAMES</parameter></term>
<listitem>
<para>
Is either <literal>yes</literal> or <literal>no</literal> and tells you
whether the <filename>sysdeps/guile/names</filename> subdirectory was build.
<varlistentry>
<term><parameter>GTOP_WANT_EXAMPLES</parameter></term>
<listitem>
<para>
Is either <literal>yes</literal> or <literal>no</literal> and tells you
whether the examples were build.
</variablelist>
<example>
<title>Sample <filename>gtopConf.sh</filename></title>
<programlisting>&gtopConf.sh;</programlisting>
</example>
</book>