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/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1998 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gversion.h"
/**
* SECTION:version
* @Title: Version Information
* @Short_description: variables and functions to check the GLib version
*
* GLib provides version information, primarily useful in configure
* checks for builds that have a configure script. Applications will
* not typically use the features described here.
*
* The GLib headers annotate deprecated APIs in a way that produces
* compiler warnings if these deprecated APIs are used. The warnings
* can be turned off by defining the macro %GLIB_DISABLE_DEPRECATION_WARNINGS
* before including the glib.h header.
*
* GLib also provides support for building applications against
* defined subsets of deprecated or new GLib APIs. Define the macro
* %GLIB_VERSION_MIN_REQUIRED to specify up to what version of GLib
* you want to receive warnings about deprecated APIs. Define the
* macro %GLIB_VERSION_MAX_ALLOWED to specify the newest version of
* GLib whose API you want to use.
*/
/**
* glib_major_version:
*
* The major version of the GLib library.
*
* An integer variable exported from the library linked
* against at application run time.
*/
/**
* GLIB_MAJOR_VERSION:
*
* The major version number of the GLib library.
*
* Like #glib_major_version, but from the headers used at
* application compile time, rather than from the library
* linked against at application run time.
*/
/**
* glib_minor_version:
*
* The minor version number of the GLib library.
*
* An integer variable exported from the library linked
* against at application run time.
*/
/**
* GLIB_MINOR_VERSION:
*
* The minor version number of the GLib library.
*
* Like #gtk_minor_version, but from the headers used at
* application compile time, rather than from the library
* linked against at application run time.
*/
/**
* glib_micro_version:
*
* The micro version number of the GLib library.
*
* An integer variable exported from the library linked
* against at application run time.
*/
/**
* GLIB_MICRO_VERSION:
*
* The micro version number of the GLib library.
*
* Like #gtk_micro_version, but from the headers used at
* application compile time, rather than from the library
* linked against at application run time.
*/
/**
* GLIB_CHECK_VERSION:
* @major: the major version to check for
* @minor: the minor version to check for
* @micro: the micro version to check for
*
* Checks the version of the GLib library that is being compiled
* against. See glib_check_version() for a runtime check.
*
* Returns: %TRUE if the version of the GLib header files
* is the same as or newer than the passed-in version.
*/
/**
* glib_binary_age:
*
* The binary age of the GLib library.
* Defines how far back backwards compatibility reaches.
*
* An integer variable exported from the library linked
* against at application run time.
*/
/**
* glib_interface_age:
*
* The interface age of the GLib library.
* Defines how far back the API has last been extended.
*
* An integer variable exported from the library linked
* against at application run time.
*/
const guint glib_major_version = GLIB_MAJOR_VERSION;
const guint glib_minor_version = GLIB_MINOR_VERSION;
const guint glib_micro_version = GLIB_MICRO_VERSION;
const guint glib_interface_age = GLIB_INTERFACE_AGE;
const guint glib_binary_age = GLIB_BINARY_AGE;
/**
* glib_check_version:
* @required_major: the required major version
* @required_minor: the required minor version
* @required_micro: the required micro version
*
* Checks that the GLib library in use is compatible with the
* given version.
*
* Generally you would pass in the constants %GLIB_MAJOR_VERSION,
* %GLIB_MINOR_VERSION, %GLIB_MICRO_VERSION as the three arguments
* to this function; that produces a check that the library in use
* is compatible with the version of GLib the application or module
* was compiled against.
*
* Compatibility is defined by two things: first the version
* of the running library is newer than the version
* `@required_major.required_minor.@required_micro`. Second
* the running library must be binary compatible with the
* version `@required_major.@required_minor.@required_micro`
* (same major version.)
*
* Returns: (transfer none) (nullable): %NULL if the GLib library is
* compatible with the given version, or a string describing the
* version mismatch. The returned string is owned by GLib and must
* not be modified or freed.
*
* Since: 2.6
*/
const gchar *
glib_check_version (guint required_major,
guint required_minor,
guint required_micro)
{
gint glib_effective_micro = 100 * GLIB_MINOR_VERSION + GLIB_MICRO_VERSION;
gint required_effective_micro = 100 * required_minor + required_micro;
if (required_major > GLIB_MAJOR_VERSION)
return "GLib version too old (major mismatch)";
if (required_major < GLIB_MAJOR_VERSION)
return "GLib version too new (major mismatch)";
if (required_effective_micro < glib_effective_micro - GLIB_BINARY_AGE)
return "GLib version too new (micro mismatch)";
if (required_effective_micro > glib_effective_micro)
return "GLib version too old (micro mismatch)";
return NULL;
}