forked from AuroraMiddleware/gtk
543 lines
21 KiB
Plaintext
543 lines
21 KiB
Plaintext
<refentry id="gtk-building" revision="6 Sept 2001">
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<refmeta>
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<refentrytitle>Compiling the GTK+ libraries</refentrytitle>
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<manvolnum>3</manvolnum>
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<refmiscinfo>GTK Library</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>Compiling the GTK+ Libraries</refname>
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<refpurpose>
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How to compile GTK+ itself
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</refpurpose>
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</refnamediv>
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<refsect1 id="overview">
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<title>Building GTK+ on UNIX-like systems</title>
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<para>
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This chapter covers building and installing GTK+ on UNIX and
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UNIX-like systems such as Linux. Compiling GTK+ on Microsoft
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Windows is different in detail and somewhat more difficult to
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get going since the necessary tools aren't included with
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the operating system.
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</para>
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<para>
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Before we get into the details of how to compile GTK+, we should
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mention that in many cases, binary packages of GTK+ prebuilt for
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your operating system will be available, either from your
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operating system vendor or from independent sources. If such a
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set of packages is available, installing it will get you
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programming wih GTK+ much faster than building it yourself. In
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fact, you may well already have GTK+ installed on your system
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already.
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</para>
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<para>
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On UNIX-like systems GTK+ uses the standard GNU build system,
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using <application>autoconf</application> for package
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configuration and resolving portability issues,
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<application>automake</application> for building makefiles that
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comply with the GNU Coding Standards, and
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<application>libtool</application> for building shared libraries
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on multiple platforms.
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</para>
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<para>
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If you are building GTK+ from the distributed source packages,
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then won't need these tools installed; the necessary pieces
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of the tools are already included in the source packages. But
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it's useful to know a bit about how packages that use these
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tools work. A source package is distributed as a
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<literal>tar.gz</literal> file which you unpack into a
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directory full of the source files as follows:
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</para>
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<programlisting>
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tar xvfz gtk+-2.0.0.tar.gz
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</programlisting>
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<para>
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In the toplevel of the directory that is created, there will be
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a shell script called <filename>configure</filename> which
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you then run to take the template makefiles called
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<filename>Makefile.in</filename> in the package and create
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makefiles customized for your operating system. The <filename>configure</filename>
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script can be passed various command line arguments to determine how
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the package is built and installed. The most commonly useful
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argument is the <systemitem>--prefix</systemitem> argument which
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determines where the package is installed. To install a package
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in <filename>/opt/gtk</filename> you would run configure as:
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</para>
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<programlisting>
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./configure --prefix=/opt/gtk
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</programlisting>
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<para>
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A full list of options can be found by running
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<filename>configure</filename> with the
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<systemitem>--help</systemitem> argument. In general, the defaults are
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right and should be trusted. After you've run
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<filename>configure</filename>, you then run the
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<command>make</command> command to build the package and install
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it.
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</para>
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<programlisting>
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make
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make install
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</programlisting>
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<para>
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If you don't have permission to write to the directory you are
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installing in, you may have to change to root temporarily before
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running <literal>make install</literal>. Also, if you are
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installing in a system directory, on some systems (such as
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Linux), you will need to run <command>ldconfig</command> after
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<literal>make install</literal> so that the newly installed
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libraries will be found.
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</para>
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<para>
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Several environment variables are useful to pass to set before
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running configure. <envar>CPPFLAGS</envar> contains options to
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pass to the C compiler, and is used to tell the compiler where
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to look for include files. The <envar>LDFLAGS</envar> variable
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is used in a similar fashion for the linker. Finally the
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<envar>PKG_CONFIG_PATH</envar> environment variable contains
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a search path that <command>pkg-config</command> (see below)
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uses when looking for for file describing how to compile
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programs using different libraries. If you were installing GTK+
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and it's dependencies into <filename>/opt/gtk</filename>, you
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might want to set these variables as:
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</para>
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<programlisting>
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CPPFLAGS="-I/opt/gtk/include"
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LDFLAGS="-L/opt/gtk/lib"
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PKG_CONFIG_PATH="/opt/gtk/lib/pkgconfig"
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export CPPFLAGS LDFLAGS PKG_CONFIG_PATH
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</programlisting>
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<para>
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You may also need to set the <envar>LD_LIBRARY_PATH</envar>
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environment variable so the systems dynamic linker can find
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the newly installed libraries, and the <envar>PATH</envar>
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environment program so that utility binaries installed by
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the various libraries will be found.
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</para>
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<programlisting>
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LD_LIBRARY_PATH="/opt/gtk/lib"
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PATH="/opt/gtk/bin:$PATH"
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export LD_LIBRARY_PATH PATH
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</programlisting>
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</refsect1>
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<refsect1 id="dependencies">
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<title>Dependencies</title>
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<para>
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Before you can compile the GTK+ widget toolkit, you need to have
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various other tools and libraries installed on your
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system. The two tools needed during the build process (as
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differentiated from the tools used in when creating GTK+
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mentioned above such as <application>autoconf</application>)
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are <command>pkg-config</command> and GNU make.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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<ulink
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url="http://www.freedesktop.org/software/pkgconfig">pkg-config</ulink>
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is a tool for tracking the compilation flags needed for
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libraries that are used by the GTK+ libraries. (For each
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library, a small <literal>.pc</literal> text file is installed
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in a standard location that contains the compilation flags
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needed for that library along with version number information.)
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The version of <command>pkg-config</command> needed to build
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GTK+ is mirrored in the <filename>dependencies</filename> directory
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on the <ulink url="ftp://ftp.gtk.org/pub/gtk/v2.6/">GTK+ FTP
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site.</ulink>
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</para>
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</listitem>
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<listitem>
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<para>
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The GTK+ makefiles will mostly work with different versions
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of <command>make</command>, however, there tends to be
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a few incompatibilities, so the GTK+ team recommends
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installing <ulink url="http://www.gnu.org/software/make">GNU
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make</ulink> if you don't already have it on your system
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and using it. (It may be called <command>gmake</command>
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rather than <command>make</command>.)
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</para>
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</listitem>
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</itemizedlist>
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<para>
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Three of the libraries that GTK+ depends on are maintained by
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by the GTK+ team: GLib, Pango, and ATK. Other libraries are
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maintained separately.
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</para>
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<itemizedlist>
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<listitem>
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<para>
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The GLib library provides core non-graphical functionality
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such as high level data types, Unicode manipulation, and
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an object and type system to C programs. It is available
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from the <ulink url="ftp://ftp.gtk.org/pub/gtk/v2.6/">GTK+
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FTP site.</ulink>
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</para>
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</listitem>
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<listitem>
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<para>
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<ulink url="http://www.pango.org">Pango</ulink> is a library
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for internationalized text handling. It is available from
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the <ulink url="ftp://ftp.gtk.org/pub/gtk/v2.6/">GTK+ FTP
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site.</ulink>.
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</para>
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</listitem>
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<listitem>
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<para>
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ATK is the Accessibility Toolkit. It provides a set of generic
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interfaces allowing accessibility technologies such as
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screen readers to interact with a graphical user interface.
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It is available from the <ulink
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url="ftp://ftp.gtk.org/pub/gtk/v2.6/">GTK+ FTP site.</ulink>
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</para>
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</listitem>
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<listitem>
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<para>
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The <ulink url="http://www.gnu.org/software/libiconv/">GNU
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libiconv library</ulink> is needed to build GLib if your
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system doesn't have the <function>iconv()</function>
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function for doing conversion between character
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encodings. Most modern systems should have
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<function>iconv()</function>.
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</para>
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</listitem>
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<listitem>
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<para>
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The libintl library from the <ulink
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url="http://www.gnu.org/software/gettext/">GNU gettext
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package</ulink> is needed if your system doesn't have the
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<function>gettext()</function> functionality for handling
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message translation databases.
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</para>
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</listitem>
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<listitem>
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<para>
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The <ulink
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url="ftp://ftp.uu.net/graphics/jpeg/">JPEG</ulink>,
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<ulink url="http://www.libpng.org">PNG</ulink>, and
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<ulink url="http://www.libtiff.org">TIFF</ulink> image
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loading libraries are needed to compile GTK+. You probably
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already have these libraries installed, but if not, the
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versions you need are available in the
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<filename>dependencies</filename> directory on the the
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<ulink url="ftp://ftp.gtk.org/pub/gtk/v2.6/dependencies/">GTK+
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FTP site.</ulink>. (Before installing these libraries
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from source, you should check if your operating system
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vendor has prebuilt packages of these libraries that you
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don't have installed.)
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</para>
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</listitem>
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<listitem>
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<para>
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The libraries from the X window system are needed to build
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Pango and GTK+. You should already have these installed on
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your system, but it's possible that you'll need to install
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the development environment for these libraries that your
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operating system vendor provides.
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</para>
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</listitem>
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<listitem>
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<para>
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The <ulink url="http://www.fontconfig.org">fontconfig</ulink>
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library provides Pango with a standard way of locating
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fonts and matching them against font names.
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</para>
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</listitem>
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<listitem>
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<para>
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<ulink url="http://www.cairographics.org">Cairo</ulink>
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is a graphics library that supports vector graphics and image
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compositing. Both Pango and GTK+ use cairo for much of their
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drawing.
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</para>
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</listitem>
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</itemizedlist>
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</refsect1>
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<refsect1 id="building">
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<title>Building and testing GTK+</title>
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<para>
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First make sure that you have the necessary external
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dependencies installed: <command>pkg-config</command>, GNU make,
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the JPEG, PNG, and TIFF libraries, FreeType, and, if necessary,
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libiconv and libintl. To get detailed information about building
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these packages, see the documentation provided with the
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individual packages.
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On a Linux system, it's quite likely you'll have all of these
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installed already except for <command>pkg-config</command>.
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</para>
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<para>
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Then build and install the GTK+ libraries in the order:
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GLib, Pango, ATK, then GTK+. For each library, follow the
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steps of <literal>configure</literal>, <literal>make</literal>,
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<literal>make install</literal> mentioned above. If you're
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lucky, this will all go smoothly, and you'll be ready to
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<link linkend="gtk-compiling">start compiling your own GTK+
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applications</link>. You can test your GTK+ installation
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by running the <command>gtk-demo</command> program that
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GTK+ installs.
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</para>
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<para>
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If one of the <filename>configure</filename> scripts fails or running
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<command>make</command> fails, look closely at the error
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messages printed; these will often provide useful information
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as to what went wrong. When <filename>configure</filename>
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fails, extra information, such as errors that a test compilation
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ran into, is found in the file <filename>config.log</filename>.
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Looking at the last couple of hundred lines in this file will
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frequently make clear what went wrong. If all else fails, you
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can ask for help on the gtk-list mailing list.
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See <xref linkend="gtk-resources"/> for more information.
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</para>
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</refsect1>
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<refsect1 id="extra-configuration-options">
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<title>Extra Configuration Options</title>
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<para>
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In addition to the normal options, the
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<command>configure</command> script for the GTK+ library
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supports a number of additional arguments. (Command line
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arguments for the other GTK+ libraries are described in
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the documentation distributed with the those libraries.)
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<cmdsynopsis>
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<command>configure</command>
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<group>
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<arg>--disable-modules</arg>
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<arg>--enable-modules</arg>
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</group>
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<group>
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<arg>--with-included-loaders==LOADER1,LOADER2,...</arg>
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</group>
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<group>
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<arg>--enable-debug=[no|minimum|yes]</arg>
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</group>
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<group>
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<arg>--disable-visibility</arg>
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<arg>--enable-visibility</arg>
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</group>
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<group>
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<arg>--disable-shm</arg>
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<arg>--enable-shm</arg>
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</group>
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<group>
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<arg>--disable-xim</arg>
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<arg>--enable-xim</arg>
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</group>
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<group>
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<arg>--disable-xim-inst</arg>
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<arg>--enable-xim-inst</arg>
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</group>
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<group>
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<arg>--disable-xkb</arg>
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<arg>--enable-xkb</arg>
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</group>
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<group>
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<arg>--disable-gtk-doc</arg>
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<arg>--enable-gtk-doc</arg>
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</group>
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<group>
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<arg>--with-xinput=[no|yes]</arg>
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</group>
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<group>
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<arg>--with-gdktarget=[x11|linux-fb|win32]</arg>
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</group>
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<group>
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<arg>--disable-shadowfb</arg>
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<arg>--enable-shadowfb</arg>
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</group>
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</cmdsynopsis>
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</para>
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<formalpara>
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<title><systemitem>--disable-modules</systemitem> and
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<systemitem>--enable-modules</systemitem></title>
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<para>
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Normally GTK+ will try to build the GdkPixbuf image file
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format loaders as little shared libraries that are loaded on
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demand. The <systemitem>--disable-modules</systemitem>
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argument indicates that they should all be built statically
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into the GTK+ library instead. This is useful for
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people who need to produce statically-linked binaries. If
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neither <systemitem>--disable-modules</systemitem> nor
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<systemitem>--enable-modules</systemitem> is specified, then
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the <command>configure</command> script will try to
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auto-detect whether shared modules work on your system.
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</para>
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</formalpara>
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<formalpara>
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<title><systemitem>--with-included-loaders</systemitem></title>
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<para>
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This option allows you to specify which image loaders you
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want to include; for example, you might include only the PNG
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loader to create a smaller GdkPixbuf binary.
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</para>
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</formalpara>
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<formalpara>
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<title><systemitem>--enable-debug</systemitem></title>
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<para>
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Turns on various amounts of debugging support. Setting this to 'no'
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disables g_assert(), g_return_if_fail(), g_return_val_if_fail() and
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all cast checks between different object types. Setting it to 'minimum'
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disables only cast checks. Setting it to 'yes' enables
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<link linkend="GTK-Debug-Options">runtime debugging</link>.
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The default is 'minimum'.
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Note that 'no' is fast, but dangerous as it tends to destabilize
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even mostly bug-free software by changing the effect of many bugs
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from simple warnings into fatal crashes. Thus
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<option>--enable-debug=no</option> should <emphasis>not</emphasis>
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be used for stable releases of GTK+.
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</para>
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</formalpara>
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<formalpara>
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<title><systemitem>--disable-visibility</systemitem> and
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<systemitem>--enable-visibility</systemitem></title>
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<para>
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The option <systemitem>--disable-visibility</systemitem>
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turns off the use of ELF visibility attributes for linking
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optimizations. This makes sense while changing GTK+ itself,
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since the way in which GTK+ uses visibility attributes
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forces a full rebuild of all source files for any header
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modification.
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</para>
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</formalpara>
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<formalpara>
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<title><systemitem>--enable-explicit-deps</systemitem> and
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<systemitem>--disable-explicit-deps</systemitem></title>
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<para>
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If <systemitem>--enable-explicit-deps</systemitem> is
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specified then GTK+ will write the full set of libraries
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that GTK+ depends upon into its <literal>.pc</literal> files to be used when
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programs depending on GTK+ are linked. Otherwise, GTK+
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only will include the GTK+ libraries themselves, and
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will depend on system library dependency facilities to
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bring in the other libraries.
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By default GTK+ will disable explicit dependencies unless
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it detects that they are needed on the system. (If you
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specify <systemitem>--enable-static</systemitem> to force
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building of static libraries, then explicit dependencies
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will be written since library dependencies don't work
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for static libraries.) Specifying
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<systemitem>--enable-explicit-deps</systemitem> or
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<systemitem>--enable-static</systemitem> can cause
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compatibility
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problems when libraries that GTK+ depends upon change
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their versions, and should be avoided if possible.
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</para>
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</formalpara>
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<formalpara>
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<title><systemitem>--disable-shm</systemitem> and
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<systemitem>--enable-shm</systemitem></title>
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<para>
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These options can be used to control whether GTK+ will use shared
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memory to communicate with the X server when possible.
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The default is 'yes'.
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</para>
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</formalpara>
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<formalpara>
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<title><systemitem>--disable-xim</systemitem> and
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<systemitem>--enable-xim</systemitem></title>
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<para>
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These options can be used to control whether GTK+ will
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be compiled with support for XIM. (The X Input Method
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extension, used for Japanese input.) The default is yes.
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</para>
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</formalpara>
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<formalpara>
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<title><systemitem>--disable-xim-inst</systemitem> and
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<systemitem>--enable-xim-inst</systemitem></title>
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<para>
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These options determine whether GTK+ will use the
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XIM instantiate callback.
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The default is 'yes', unless the host system is Solaris,
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where <function>XRegisterIMInstantiateCallback()</function>
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seems to cause a segfault.
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</para>
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</formalpara>
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<formalpara>
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<title><systemitem>--disable-xkb</systemitem> and
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<systemitem>--enable-xkb</systemitem></title>
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<para>
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By default the <command>configure</command> script will try
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to auto-detect whether the XKB extension is supported by
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the X libraries GTK+ is linked with.
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These options can be used to explicitly control whether
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GTK+ will support the XKB extension.
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</para>
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</formalpara>
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<formalpara>
|
|
<title><systemitem>--disable-gtk-doc</systemitem> and
|
|
<systemitem>--enable-gtk-doc</systemitem></title>
|
|
|
|
<para>
|
|
The <application>gtk-doc</application> package is
|
|
used to generate the reference documentation included
|
|
with GTK+. By default support for <application>gtk-doc</application>
|
|
is disabled because it requires various extra dependencies
|
|
to be installed. If you have
|
|
<application>gtk-doc</application> installed and
|
|
are modifying GTK+, you may want to enable
|
|
<application>gtk-doc</application> support by passing
|
|
in <systemitem>--enable-gtk-doc</systemitem>. If not
|
|
enabled, pre-generated HTML files distributed with GTK+
|
|
will be installed.
|
|
</para>
|
|
</formalpara>
|
|
|
|
<formalpara>
|
|
<title><systemitem>--with-xinput</systemitem></title>
|
|
<para>
|
|
Controls whether GTK+ is built with support for the XInput
|
|
extension. The XInput extension provides an interface
|
|
to extended input devices such as graphics tablets.
|
|
When this support is compiled in, specially written
|
|
GTK+ programs can get access to subpixel positions,
|
|
multiple simultaneous input devices, and extra "axes"
|
|
provided by the device such as pressure and tilt
|
|
information. This is only known to work well on XFree86
|
|
systems, though other systems do have this extension.
|
|
</para>
|
|
</formalpara>
|
|
<formalpara>
|
|
<title><systemitem>--with-gdktarget</systemitem></title>
|
|
|
|
<para>
|
|
Toggles between the supported backends for GDK.
|
|
The default is x11, unless the platform is Windows, in which
|
|
case the default is win32.
|
|
</para>
|
|
</formalpara>
|
|
|
|
<formalpara>
|
|
<title><systemitem>--disable-shadowfb</systemitem> and
|
|
<systemitem>--enable-shadowfb</systemitem></title>
|
|
|
|
<para>
|
|
Toggles shadow framebuffer support for the linux-fb target,
|
|
if selected.
|
|
</para>
|
|
</formalpara>
|
|
|
|
</refsect1>
|
|
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</refentry>
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