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General Information =================== This is GLib version 2.14.3. GLib is the low-level core library that forms the basis for projects such as GTK+ and GNOME. It provides data structure handling for C, portability wrappers, and interfaces for such runtime functionality as an event loop, threads, dynamic loading, and an object system. The official ftp site is: ftp://ftp.gtk.org/pub/glib The official web site is: http://www.gtk.org/ Information about mailing lists can be found at http://www.gtk.org/mailinglists.html To subscribe: mail -s subscribe email@example.com < /dev/null (Send mail to firstname.lastname@example.org with the subject "subscribe") Installation ============ See the file 'INSTALL' Notes about GLib 2.10 ===================== * The functions g_snprintf() and g_vsnprintf() have been removed from the gprintf.h header, since they are already declared in glib.h. This doesn't break documented use of gprintf.h, but people have been known to include gprintf.h without including glib.h. * The Unicode support has been updated to Unicode 4.1. This adds several new members to the GUnicodeBreakType enumeration. * The support for Solaris threads has been retired. Solaris has provided POSIX threads for long enough now to have them available on every Solaris platform. * 'make check' has been changed to validate translations by calling msgfmt with the -c option. As a result, it may fail on systems with older gettext implementations (GNU gettext < 0.14.1, or Solaris gettext). 'make check' will also fail on systems where the C compiler does not support ELF visibility attributes. * The GMemChunk API has been deprecated in favour of a new 'slice allocator'. See the g_slice documentation for more details. * A new type, GInitiallyUnowned, has been introduced, which is intended to serve as a common implementation of the 'floating reference' concept that is e.g. used by GtkObject. Note that changing the inheritance hierarchy of a type can cause problems for language bindings and other code which needs to work closely with the type system. Therefore, switching to GInitiallyUnowned should be done carefully. g_object_compat_control() has been added to GLib 2.8.5 to help with the transition. Notes about GLib 2.6.0 ====================== * GLib 2.6 introduces the concept of 'GLib filename encoding', which is the on-disk encoding on Unix, but UTF-8 on Windows. All GLib functions returning or accepting pathnames have been changed to expect filenames in this encoding, and the common POSIX functions dealing with pathnames have been wrapped. These wrappers are declared in the header <glib/gstdio.h> which must be included explicitly; it is not included through <glib.h>. On current (NT-based) Windows versions, where the on-disk file names are Unicode, these wrappers use the wide-character API in the C library. Thus applications can handle file names containing any Unicode characters through GLib's own API and its POSIX wrappers, not just file names restricted to characters in the system codepage. To keep binary compatibility with applications compiled against older versions of GLib, the Windows DLL still provides entry points with the old semantics using the old names, and applications compiled against GLib 2.6 will actually use new names for the functions. This is transparent to the programmer. When compiling against GLib 2.6, applications intended to be portable to Windows must take the UTF-8 file name encoding into consideration, and use the gstdio wrappers to access files whose names have been constructed from strings returned from GLib. * Likewise, g_get_user_name() and g_get_real_name() have been changed to return UTF-8 on Windows, while keeping the old semantics for applications compiled against older versions of GLib. * The GLib uses an '_' prefix to indicate private symbols that must not be used by applications. On some platforms, symbols beginning with prefixes such as _g will be exported from the library, on others not. In no case can applications use these private symbols. In addition to that, GLib+ 2.6 makes several symbols private which were not in any installed header files and were never intended to be exported. * To reduce code size and improve efficiency, GLib, when compiled with the GNU toolchain, has separate internal and external entry points for exported functions. The internal names, which begin with IA__, may be seen when debugging a GLib program. * On Windows, GLib no longer opens a console window when printing warning messages if stdout or stderr are invalid, as they are in "Windows subsystem" (GUI) applications. Simply redirect stdout or stderr if you need to see them. * The child watch functionality tends to reveal a bug in many thread implementations (in particular the older LinuxThreads implementation on Linux) where it's not possible to call waitpid() for a child created in a different thread. For this reason, for maximum portability, you should structure your code to fork all child processes that you want to wait for from the main thread. * A problem was recently discovered with g_signal_connect_object(); it doesn't actually disconnect the signal handler once the object being connected to dies, just disables it. See the API docs for the function for further details and the correct workaround that will continue to work with future versions of GLib. How to report bugs ================== Bugs should be reported to the GNOME bug tracking system. (http://bugzilla.gnome.org, product glib.) You will need to create an account for yourself. In the bug report please include: * Information about your system. For instance: - What operating system and version - For Linux, what version of the C library And anything else you think is relevant. * How to reproduce the bug. If you can reproduce it with one of the test programs that are built in the tests/ subdirectory, that will be most convenient. Otherwise, please include a short test program that exhibits the behavior. As a last resort, you can also provide a pointer to a larger piece of software that can be downloaded. * If the bug was a crash, the exact text that was printed out when the crash occured. * Further information such as stack traces may be useful, but is not necessary. Patches ======= Patches should also be submitted to bugzilla.gnome.org. If the patch fixes an existing bug, add the patch as an attachment to that bug report. Otherwise, enter a new bug report that describes the patch, and attach the patch to that bug report. Bug reports containing patches should include the PATCH keyword in their keyword fields. If the patch adds to or changes the GLib programming interface, the API keyword should also be included. Patches should be in unified diff form. (The -u option to GNU diff.)