4 This is GLib version @GLIB_VERSION@. GLib is the low-level core
5 library that forms the basis for projects such as GTK+ and GNOME. It
6 provides data structure handling for C, portability wrappers, and
7 interfaces for such runtime functionality as an event loop, threads,
8 dynamic loading, and an object system.
10 The official ftp site is:
11 ftp://ftp.gtk.org/pub/glib
13 The official web site is:
16 Information about mailing lists can be found at
17 http://www.gtk.org/mailinglists.html
19 To subscribe: mail -s subscribe gtk-list-request@gnome.org < /dev/null
20 (Send mail to gtk-list-request@gnome.org with the subject "subscribe")
25 See the file 'INSTALL'
30 * The recommended way of using GLib has always been to only include the
31 toplevel headers glib.h, glib-object.h and gio.h. GLib enforces this by
32 generating an error when individual headers are directly included.
33 To help with the transition, the enforcement is not turned on by
34 default for GLib headers (it is turned on for GObject and GIO).
35 To turn it on, define the preprocessor symbol G_DISABLE_SINGLE_INCLUDES.
40 * GLib now includes GIO, which adds optional dependencies against libattr
41 and libselinux for extended attribute and SELinux support. Use
42 --disable-xattr and --disable-selinux to build without these.
47 * The functions g_snprintf() and g_vsnprintf() have been removed from
48 the gprintf.h header, since they are already declared in glib.h. This
49 doesn't break documented use of gprintf.h, but people have been known
50 to include gprintf.h without including glib.h.
52 * The Unicode support has been updated to Unicode 4.1. This adds several
53 new members to the GUnicodeBreakType enumeration.
55 * The support for Solaris threads has been retired. Solaris has provided
56 POSIX threads for long enough now to have them available on every
59 * 'make check' has been changed to validate translations by calling
60 msgfmt with the -c option. As a result, it may fail on systems with
61 older gettext implementations (GNU gettext < 0.14.1, or Solaris gettext).
62 'make check' will also fail on systems where the C compiler does not
63 support ELF visibility attributes.
65 * The GMemChunk API has been deprecated in favour of a new 'slice
66 allocator'. See the g_slice documentation for more details.
68 * A new type, GInitiallyUnowned, has been introduced, which is
69 intended to serve as a common implementation of the 'floating reference'
70 concept that is e.g. used by GtkObject. Note that changing the
71 inheritance hierarchy of a type can cause problems for language
72 bindings and other code which needs to work closely with the type
73 system. Therefore, switching to GInitiallyUnowned should be done
74 carefully. g_object_compat_control() has been added to GLib 2.8.5
75 to help with the transition.
77 Notes about GLib 2.6.0
78 ======================
80 * GLib 2.6 introduces the concept of 'GLib filename encoding', which is the
81 on-disk encoding on Unix, but UTF-8 on Windows. All GLib functions
82 returning or accepting pathnames have been changed to expect
83 filenames in this encoding, and the common POSIX functions dealing
84 with pathnames have been wrapped. These wrappers are declared in the
85 header <glib/gstdio.h> which must be included explicitly; it is not
86 included through <glib.h>.
88 On current (NT-based) Windows versions, where the on-disk file names
89 are Unicode, these wrappers use the wide-character API in the C
90 library. Thus applications can handle file names containing any
91 Unicode characters through GLib's own API and its POSIX wrappers,
92 not just file names restricted to characters in the system codepage.
94 To keep binary compatibility with applications compiled against
95 older versions of GLib, the Windows DLL still provides entry points
96 with the old semantics using the old names, and applications
97 compiled against GLib 2.6 will actually use new names for the
98 functions. This is transparent to the programmer.
100 When compiling against GLib 2.6, applications intended to be
101 portable to Windows must take the UTF-8 file name encoding into
102 consideration, and use the gstdio wrappers to access files whose
103 names have been constructed from strings returned from GLib.
105 * Likewise, g_get_user_name() and g_get_real_name() have been changed
106 to return UTF-8 on Windows, while keeping the old semantics for
107 applications compiled against older versions of GLib.
109 * The GLib uses an '_' prefix to indicate private symbols that
110 must not be used by applications. On some platforms, symbols beginning
111 with prefixes such as _g will be exported from the library, on others not.
112 In no case can applications use these private symbols. In addition to that,
113 GLib+ 2.6 makes several symbols private which were not in any installed
114 header files and were never intended to be exported.
116 * To reduce code size and improve efficiency, GLib, when compiled
117 with the GNU toolchain, has separate internal and external entry
118 points for exported functions. The internal names, which begin with
119 IA__, may be seen when debugging a GLib program.
121 * On Windows, GLib no longer opens a console window when printing
122 warning messages if stdout or stderr are invalid, as they are in
123 "Windows subsystem" (GUI) applications. Simply redirect stdout or
124 stderr if you need to see them.
126 * The child watch functionality tends to reveal a bug in many
127 thread implementations (in particular the older LinuxThreads
128 implementation on Linux) where it's not possible to call waitpid()
129 for a child created in a different thread. For this reason, for
130 maximum portability, you should structure your code to fork all
131 child processes that you want to wait for from the main thread.
133 * A problem was recently discovered with g_signal_connect_object();
134 it doesn't actually disconnect the signal handler once the object being
135 connected to dies, just disables it. See the API docs for the function
136 for further details and the correct workaround that will continue to
137 work with future versions of GLib.
142 Bugs should be reported to the GNOME bug tracking system.
143 (http://bugzilla.gnome.org, product glib.) You will need
144 to create an account for yourself.
146 In the bug report please include:
148 * Information about your system. For instance:
150 - What operating system and version
151 - For Linux, what version of the C library
153 And anything else you think is relevant.
155 * How to reproduce the bug.
157 If you can reproduce it with one of the test programs that are built
158 in the tests/ subdirectory, that will be most convenient. Otherwise,
159 please include a short test program that exhibits the behavior.
160 As a last resort, you can also provide a pointer to a larger piece
161 of software that can be downloaded.
163 * If the bug was a crash, the exact text that was printed out
164 when the crash occured.
166 * Further information such as stack traces may be useful, but
172 Patches should also be submitted to bugzilla.gnome.org. If the
173 patch fixes an existing bug, add the patch as an attachment
176 Otherwise, enter a new bug report that describes the patch,
177 and attach the patch to that bug report.
179 Bug reports containing patches should include the PATCH keyword
180 in their keyword fields. If the patch adds to or changes the GLib
181 programming interface, the API keyword should also be included.
183 Patches should be in unified diff form. (The -u option to GNU