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 * Repeated calls to g_simple_async_result_set_op_res_gpointer used
31 to leak the data. This has been fixed to always call the provided
37 * The functions for launching applications (e.g. g_app_info_launch() +
38 friends) now passes a FUSE file:// URI if possible (requires gvfs
39 with the FUSE daemon to be running and operational). With gvfs 2.26,
40 FUSE file:// URIs will be mapped back to gio URIs in the GFile
41 constructors. The intent of this change is to better integrate
42 POSIX-only applications, see bug #528670 for the rationale. The
43 only user-visible change is when an application needs to examine an
44 URI passed to it (e.g. as a positional parameter). Instead of
45 looking at the given URI, the application will now need to look at
46 the result of g_file_get_uri() after having constructed a GFile
47 object with the given URI.
52 * The recommended way of using GLib has always been to only include the
53 toplevel headers glib.h, glib-object.h and gio.h. GLib enforces this by
54 generating an error when individual headers are directly included.
55 To help with the transition, the enforcement is not turned on by
56 default for GLib headers (it is turned on for GObject and GIO).
57 To turn it on, define the preprocessor symbol G_DISABLE_SINGLE_INCLUDES.
62 * GLib now includes GIO, which adds optional dependencies against libattr
63 and libselinux for extended attribute and SELinux support. Use
64 --disable-xattr and --disable-selinux to build without these.
69 * The functions g_snprintf() and g_vsnprintf() have been removed from
70 the gprintf.h header, since they are already declared in glib.h. This
71 doesn't break documented use of gprintf.h, but people have been known
72 to include gprintf.h without including glib.h.
74 * The Unicode support has been updated to Unicode 4.1. This adds several
75 new members to the GUnicodeBreakType enumeration.
77 * The support for Solaris threads has been retired. Solaris has provided
78 POSIX threads for long enough now to have them available on every
81 * 'make check' has been changed to validate translations by calling
82 msgfmt with the -c option. As a result, it may fail on systems with
83 older gettext implementations (GNU gettext < 0.14.1, or Solaris gettext).
84 'make check' will also fail on systems where the C compiler does not
85 support ELF visibility attributes.
87 * The GMemChunk API has been deprecated in favour of a new 'slice
88 allocator'. See the g_slice documentation for more details.
90 * A new type, GInitiallyUnowned, has been introduced, which is
91 intended to serve as a common implementation of the 'floating reference'
92 concept that is e.g. used by GtkObject. Note that changing the
93 inheritance hierarchy of a type can cause problems for language
94 bindings and other code which needs to work closely with the type
95 system. Therefore, switching to GInitiallyUnowned should be done
96 carefully. g_object_compat_control() has been added to GLib 2.8.5
97 to help with the transition.
99 Notes about GLib 2.6.0
100 ======================
102 * GLib 2.6 introduces the concept of 'GLib filename encoding', which is the
103 on-disk encoding on Unix, but UTF-8 on Windows. All GLib functions
104 returning or accepting pathnames have been changed to expect
105 filenames in this encoding, and the common POSIX functions dealing
106 with pathnames have been wrapped. These wrappers are declared in the
107 header <glib/gstdio.h> which must be included explicitly; it is not
108 included through <glib.h>.
110 On current (NT-based) Windows versions, where the on-disk file names
111 are Unicode, these wrappers use the wide-character API in the C
112 library. Thus applications can handle file names containing any
113 Unicode characters through GLib's own API and its POSIX wrappers,
114 not just file names restricted to characters in the system codepage.
116 To keep binary compatibility with applications compiled against
117 older versions of GLib, the Windows DLL still provides entry points
118 with the old semantics using the old names, and applications
119 compiled against GLib 2.6 will actually use new names for the
120 functions. This is transparent to the programmer.
122 When compiling against GLib 2.6, applications intended to be
123 portable to Windows must take the UTF-8 file name encoding into
124 consideration, and use the gstdio wrappers to access files whose
125 names have been constructed from strings returned from GLib.
127 * Likewise, g_get_user_name() and g_get_real_name() have been changed
128 to return UTF-8 on Windows, while keeping the old semantics for
129 applications compiled against older versions of GLib.
131 * The GLib uses an '_' prefix to indicate private symbols that
132 must not be used by applications. On some platforms, symbols beginning
133 with prefixes such as _g will be exported from the library, on others not.
134 In no case can applications use these private symbols. In addition to that,
135 GLib+ 2.6 makes several symbols private which were not in any installed
136 header files and were never intended to be exported.
138 * To reduce code size and improve efficiency, GLib, when compiled
139 with the GNU toolchain, has separate internal and external entry
140 points for exported functions. The internal names, which begin with
141 IA__, may be seen when debugging a GLib program.
143 * On Windows, GLib no longer opens a console window when printing
144 warning messages if stdout or stderr are invalid, as they are in
145 "Windows subsystem" (GUI) applications. Simply redirect stdout or
146 stderr if you need to see them.
148 * The child watch functionality tends to reveal a bug in many
149 thread implementations (in particular the older LinuxThreads
150 implementation on Linux) where it's not possible to call waitpid()
151 for a child created in a different thread. For this reason, for
152 maximum portability, you should structure your code to fork all
153 child processes that you want to wait for from the main thread.
155 * A problem was recently discovered with g_signal_connect_object();
156 it doesn't actually disconnect the signal handler once the object being
157 connected to dies, just disables it. See the API docs for the function
158 for further details and the correct workaround that will continue to
159 work with future versions of GLib.
164 Bugs should be reported to the GNOME bug tracking system.
165 (http://bugzilla.gnome.org, product glib.) You will need
166 to create an account for yourself.
168 In the bug report please include:
170 * Information about your system. For instance:
172 - What operating system and version
173 - For Linux, what version of the C library
175 And anything else you think is relevant.
177 * How to reproduce the bug.
179 If you can reproduce it with one of the test programs that are built
180 in the tests/ subdirectory, that will be most convenient. Otherwise,
181 please include a short test program that exhibits the behavior.
182 As a last resort, you can also provide a pointer to a larger piece
183 of software that can be downloaded.
185 * If the bug was a crash, the exact text that was printed out
186 when the crash occured.
188 * Further information such as stack traces may be useful, but
194 Patches should also be submitted to bugzilla.gnome.org. If the
195 patch fixes an existing bug, add the patch as an attachment
198 Otherwise, enter a new bug report that describes the patch,
199 and attach the patch to that bug report.
201 Patches should be in unified diff form. (The -up option to GNU