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62a133f55d
Also, reenable the compiling Glib application section Fixes https://bugzilla.gnome.org/show_bug.cgi?id=612736
98 lines
3.5 KiB
XML
98 lines
3.5 KiB
XML
<?xml version="1.0"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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]>
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<refentry id="glib-compiling" revision="17 Jan 2002">
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<refmeta>
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<refentrytitle>Compiling GLib Applications</refentrytitle>
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<manvolnum>3</manvolnum>
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<refmiscinfo>GLib Library</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>Compiling GLib Applications</refname>
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<refpurpose>
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How to compile your GLib application
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Compiling GLib Applications on UNIX</title>
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<para>
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To compile a GLib application, you need to tell the compiler where to
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find the GLib header files and libraries. This is done with the
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<application>pkg-config</application> utility.
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</para>
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<para>
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The following interactive shell session demonstrates how
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<application>pkg-config</application> is used (the actual output on
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your system may be different):
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<programlisting>
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$ pkg-config --cflags glib-2.0
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-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include
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$ pkg-config --libs glib-2.0
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-L/usr/lib -lm -lglib-2.0
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</programlisting>
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</para>
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<para>
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If your application uses threads or <structname>GObject</structname>
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features, it must be compiled and linked with the options returned by the
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following <application>pkg-config</application> invocations:
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<programlisting>
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$ pkg-config --cflags --libs gthread-2.0
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$ pkg-config --cflags --libs gobject-2.0
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</programlisting>
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</para>
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<para>
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If your application uses modules, it must be compiled and linked with the options
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returned by one of the following <application>pkg-config</application> invocations:
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<programlisting>
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$ pkg-config --cflags --libs gmodule-no-export-2.0
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$ pkg-config --cflags --libs gmodule-2.0
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</programlisting>
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The difference between the two is that gmodule-2.0 adds <option>--export-dynamic</option>
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to the linker flags, which is often not needed.
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</para>
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<para>
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The simplest way to compile a program is to use the "backticks"
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feature of the shell. If you enclose a command in backticks
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(<emphasis>not single quotes</emphasis>), then its output will be
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substituted into the command line before execution. So to compile
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a GLib Hello, World, you would type the following:
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<programlisting>
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$ cc `pkg-config --cflags --libs glib-2.0` hello.c -o hello
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</programlisting>
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</para>
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<para>
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If you want to make sure that your program doesn't use any deprecated
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functions, you can define the preprocessor symbol G_DISABLE_DEPRECATED
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by using the command line option <literal>-DG_DISABLE_DEPRECATED=1</literal>.
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</para>
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<para>
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The recommended way of using GLib has always been to only include the
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toplevel headers <filename>glib.h</filename>,
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<filename>glib-object.h</filename>, <filename>gio.h</filename>.
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Still, there are some exceptions; these headers have to be included separately:
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<filename>gmodule.h</filename>,
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<filename>glib/gi18n-lib.h</filename> or <filename>glib/gi18n.h</filename> (see
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the <link linkend="glib-I18N">Internationalization section</link>),
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<filename>glib/gprintf.h</filename> and <filename>glib/gstdio.h</filename>
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(we don't want to pull in all of stdio).
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</para>
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<para>
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Starting with 2.17, GLib enforces this by generating an error
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when individual headers are directly included. To help with the
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transition, the enforcement is not turned on by default for GLib
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headers (it <emphasis>is</emphasis> turned on for GObject and GIO).
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To turn it on, define the preprocessor symbol G_DISABLE_SINGLE_INCLUDES
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by using the command line option <literal>-DG_DISABLE_SINGLE_INCLUDES</literal>.
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</para>
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</refsect1>
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</refentry>
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