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Simple install procedure
========================
% gzip -cd glib-@GLIB_VERSION@.tar.gz | tar xvf - # unpack the sources
% cd glib-@GLIB_VERSION@ # change to the toplevel directory
% ./configure # run the `configure' script
% make # build GLIB
[ Become root if necessary ]
% rm -rf /install-prefix/include/glib.h /install-prefix/include/gmodule.h
% make install # install GLIB
Requirements
============
In order to implement conversions between character sets,
GLib requires an implementation of the standard iconv() routine.
Most modern systems will have a suitable implementation, however
many older systems lack an iconv() implementation. On such systems,
you must install the libiconv library. This can be found at:
http://clisp.cons.org/~haible/packages-libiconv.html
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 /usr/local/), but don't enable
it, you will get an error while compiling GTK+ because the
iconv.h that libiconv installs hides the system iconv.
The Nitty-Gritty
================
The 'configure' script can be given a number of options to enable
and disable various features. For a complete list, type:
./configure --help
A few of the more important ones:
* --prefix=PREFIX install architecture-independent files in PREFIX
[ Defaults to /usr/local ]
* --exec-prefix=EPREFIX install architecture-dependent files in EPREFIX
[ Defaults to the value given to --prefix ]
* --enable-gc-friendly When enabled all memory freed by the application,
but retained by GLib for performance reasons
is set to zero, thus making deployed garbage
collection or memory profiling tools detect
unlinked memory correctly. This will make GLib
slightly slower.
[ Disabled by default ]
* --disable-threads 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.
[ Enabled by default ]
* --with-threads=[none/posix/dce/solaris/win32] 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.
* 'solaris' uses the native Solaris thread
implementation.
* '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.
[ Determined by configure by default ]
Options can be given to the compiler and linker by setting
environment variables before running configure. A few of the more
important ones:
CC : The C compiler to use
CPPFLAGS : Flags for the C preprocesser such as -I and -D
CFLAGS : C compiler flags
The most important use of this is to set the
optimization/debugging flags. For instance, to compile with no
debugging information at all, run configure as:
CFLAGS=-O2 ./configure # Bourne compatible shells (sh/bash/zsh)
or,
setenv CFLAGS -O2 ; ./configure # csh and variants
Installation directories
========================
The location of the installed files is determined by the --prefix
and --exec-prefix options given to configure. There are also more
detailed flags to control individual directories. However, the
use of these flags is not tested.
One particular detail to note, is that the architecture-dependent
include file glibconfig.h is installed in:
$exec_pref/lib/glib/include/
if you have a version in $prefix/include, this is out of date
and should be deleted.
A shell script glib-config is created during the configure
process, and installed in the bin/ directory
($exec_prefix/bin). This is used to determine the location of glib
when building applications. If you move glib after installation,
it will be necessary to edit this file.
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