|GLib Reference Manual|
Compiling the GLib package
Compiling the GLib Package — How to compile GLib itself
On UNIX, GLib uses the standard GNU build system, using autoconf for package configuration and resolving portability issues, automake for building makefiles that comply with the GNU Coding Standards, and libtool for building shared libraries on multiple platforms. The normal sequence for compiling and installing the GLib library is thus:
The standard options provided by GNU autoconf may be passed to the configure script. Please see the autoconf documentation or run ./configure --help for information about the standard options.
The GTK+ documentation contains further details about the build process and ways to influence it.
Before you can compile the GLib library, you need to have various other tools and libraries installed on your system. The two tools needed during the build process (as differentiated from the tools used in when creating GLib mentioned above such as autoconf) are pkg-config and GNU make.
is a tool for tracking the compilation flags needed for
libraries that are used by the GLib library. (For each
library, a small
.pc text file is
installed in a standard location that contains the compilation
flags needed for that library along with version number
information.) The version of pkg-config
needed to build GLib is mirrored in the
on the GTK+ FTP
The GTK+ makefiles will mostly work with different versions of make, however, there tends to be a few incompatibilities, so the GTK+ team recommends installing GNU make if you don't already have it on your system and using it. (It may be called gmake rather than make.)
GLib depends on a number of other libraries.
libiconv library is needed to build GLib if your
system doesn't have the
function for doing conversion between character
encodings. Most modern systems should have
iconv(), however many older systems lack
iconv() implementation. On such systems,
you must install the libiconv library. This can be found at:
If your system has an
iconv() implementation but
you want to use libiconv instead, you can pass the
--with-libiconv option to configure. This forces
libiconv to be used.
Note that if you have libiconv installed in your default include
search path (for instance, in
don't enable it, you will get an error while compiling GLib because
iconv.h that libiconv installs hides the
If you are using the native iconv implementation on Solaris instead of libiconv, you'll need to make sure that you have the converters between locale encodings and UTF-8 installed. At a minimum you'll need the SUNWuiu8 package. You probably should also install the SUNWciu8, SUNWhiu8, SUNWjiu8, and SUNWkiu8 packages.
The native iconv on Compaq Tru64 doesn't contain support for UTF-8, so you'll need to use GNU libiconv instead. (When using GNU libiconv for GLib, you'll need to use GNU libiconv for GNU gettext as well.) This probably applies to related operating systems as well.
The libintl library from the GNU gettext
package is needed if your system doesn't have the
gettext() functionality for handling
message translation databases.
A thread implementation is needed, unless you want to compile GLib without thread support, which is not recommended. The thread support in GLib can be based upon several native thread implementations, e.g. POSIX threads, DCE threads or Solaris threads.
In addition to the normal options, the configure script in the GLib library supports these additional arguments:
configure [[--enable-debug=[no|minimum|yes]]] [[--disable-gc-friendly] | [--enable-gc-friendly]] [[--disable-mem-pools] | [--enable-mem-pools]] [[--disable-threads] | [--enable-threads]] [[--with-threads=[none|posix|dce|win32]]] [[--disable-included-printf] | [--enable-included-printf]] [[--disable-visibility] | [--enable-visibility]] [[--disable-gtk-doc] | [--enable-gtk-doc]] [[--disable-man] | [--enable-man]]
Turns on various amounts of debugging support. Setting this to 'no'
disables g_assert(), g_return_if_fail(), g_return_val_if_fail() and
all cast checks between different object types. Setting it to 'minimum' disables only cast checks. Setting it to 'yes' enables
The default is 'minimum'.
Note that 'no' is fast, but dangerous as it tends to destabilize
even mostly bug-free software by changing the effect of many bugs
from simple warnings into fatal crashes. Thus
--enable-debug=no should not
be used for stable releases of GLib.
By default, and with
as well, Glib does not clear the memory for certain objects before they
are freed. For example, Glib may decide to recycle GList nodes by
putting them in a free list. However, memory profiling and debugging tools like Valgrind work better if an
application does not keep dangling pointers to freed memory (even
though these pointers are no longer dereferenced), or invalid pointers inside
uninitialized memory. The
--enable-gc-friendly option makes Glib clear
memory in these situations:
When shrinking a GArray, Glib will clear the memory no longer available in the array: shrink an array from 10 bytes to 7, and the last 3 bytes will be cleared. This includes removals of single and multiple elements.
When growing a GArray, Glib will clear the new chunk of memory. Grow an array from 7 bytes to 10 bytes, and the last 3 bytes will be cleared.
The above applies to GPtrArray as well.
When freeing a node from a GHashTable, Glib will first clear the node, which used to have pointers to the key and the value stored at that node.
When destroying or removing a GTree node, Glib will clear the node, which used to have pointers to the node's value, and the left and right subnodes.
Since clearing the memory has a cost,
--disable-gc-friendly is the default.
Many small chunks of memory are often allocated via collective pools
in GLib and are cached after release to speed up reallocations.
For sparse memory systems this behaviour is often inferior, so
memory pools can be disabled to avoid excessive caching and force
atomic maintenance of chunks through the
g_free() functions. Code currently affected by
GList, GSList, GNode, GHash allocations. The functions g_list_push_allocator(), g_list_pop_allocator(), g_slist_push_allocator(), g_slist_pop_allocator(), g_node_push_allocator() and g_node_pop_allocator() are not available
GMemChunks become basically non-effective
GSignal disables all caching (potentially very slow)
GType doesn't honour the
n_preallocs field anymore
the GBSearchArray flag
G_BSEARCH_ALIGN_POWER2 becomes non-functional
Do not compile GLib to be multi thread safe. GLib
will be slightly faster then. This is however not
recommended, as many programs rely on GLib being
multi thread safe.
Specify a thread implementation to use.
'posix' and 'dce' can be used interchangeable to mean the different versions of Posix threads. configure tries to find out, which one is installed.
'none' means that GLib will be thread safe,
but does not have a default thread
implementation. This has to be supplied to
g_thread_init() by the programmer.
By default the configure script will try
to auto-detect whether the C library provides a suitable set
printf() functions. In detail,
configure checks that the semantics of
snprintf() are as specified by C99 and
that positional parameters as specified in the Single Unix
Specification are supported. If this not the case, GLib will
include an implementation of the
These options can be used to explicitly control whether
an implementation fo the
should be included or not.
By default, GLib uses ELF visibility attributes to optimize
PLT table entries if the compiler supports ELF visibility
attributes. A side-effect of the way in which this is currently
implemented is that any header change forces a full
recompilation, and missing includes may go unnoticed.
Therefore, it makes sense to turn this feature off while
doing GLib development, even if the compiler supports ELF
visibility attributes. The
option allows to do that.
By default the configure script will try
to auto-detect whether the
gtk-doc package is installed. If
it is, then it will use it to extract and build the
documentation for the GLib library. These options
can be used to explicitly control whether
gtk-doc should be
used or not. If it is not used, the distributed,
pre-generated HTML files will be installed instead of
building them on your machine.
By default the configure script will try
to auto-detect whether xsltproc
and the necessary Docbook stylesheets are installed. If
they are, then it will use them to rebuild the included
man pages from the XML sources. These options can be used
to explicitly control whether man pages should be rebuilt
used or not. The distribution includes pre-generated man