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b91c476827
This macro simply evaluates the "extern" unless it has been explicitly defined to something else. All of the version macros (including the unversioned deprecation markers and GLIB_AVAILABLE_IN_ALL) now include _GLIB_EXTERN as part of their definition. G_INLINE has also been modified to use _GLIB_EXTERN where appropriate. This macro should never be used outside of the gmacros.h/gversonmacros.h headers. The effect of this patch is that "extern" has now been added to all functions declared in installed headers. Strictly speaking, this is something we should have had all along... GLIB_VAR and GOBJECT_VAR have also been modified to use _GLIB_EXTERN on non-Windows, instead of "extern" which they were using before. The eventual goal is to use the normal version/deprecation macros on exported variables and drop GLIB_VAR but we need to see how this will work on Windows before we go ahead with that. https://bugzilla.gnome.org/show_bug.cgi?id=688681
276 lines
9.2 KiB
C
276 lines
9.2 KiB
C
/* GLIB - Library of useful routines for C programming
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GLib Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GLib Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GLib at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#ifndef __G_VERSION_MACROS_H__
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#define __G_VERSION_MACROS_H__
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#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
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#error "Only <glib.h> can be included directly."
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#endif
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/* Version boundaries checks */
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#define G_ENCODE_VERSION(major,minor) ((major) << 16 | (minor) << 8)
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/* XXX: Every new stable minor release bump should add a macro here */
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/**
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* GLIB_VERSION_2_26:
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*
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* A macro that evaluates to the 2.26 version of GLib, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 2.32
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*/
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#define GLIB_VERSION_2_26 (G_ENCODE_VERSION (2, 26))
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/**
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* GLIB_VERSION_2_28:
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*
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* A macro that evaluates to the 2.28 version of GLib, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 2.32
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*/
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#define GLIB_VERSION_2_28 (G_ENCODE_VERSION (2, 28))
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/**
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* GLIB_VERSION_2_30:
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*
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* A macro that evaluates to the 2.30 version of GLib, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 2.32
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*/
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#define GLIB_VERSION_2_30 (G_ENCODE_VERSION (2, 30))
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/**
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* GLIB_VERSION_2_32:
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*
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* A macro that evaluates to the 2.32 version of GLib, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 2.32
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*/
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#define GLIB_VERSION_2_32 (G_ENCODE_VERSION (2, 32))
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/**
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* GLIB_VERSION_2_34:
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*
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* A macro that evaluates to the 2.34 version of GLib, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 2.34
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*/
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#define GLIB_VERSION_2_34 (G_ENCODE_VERSION (2, 34))
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/**
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* GLIB_VERSION_2_36:
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*
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* A macro that evaluates to the 2.36 version of GLib, in a format
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* that can be used by the C pre-processor.
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*
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* Since: 2.36
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*/
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#define GLIB_VERSION_2_36 (G_ENCODE_VERSION (2, 36))
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/* evaluates to the current stable version; for development cycles,
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* this means the next stable target
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*/
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#if (GLIB_MINOR_VERSION % 2)
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#define GLIB_VERSION_CUR_STABLE (G_ENCODE_VERSION (GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION + 1))
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#else
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#define GLIB_VERSION_CUR_STABLE (G_ENCODE_VERSION (GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION))
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#endif
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/* evaluates to the previous stable version */
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#if (GLIB_MINOR_VERSION % 2)
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#define GLIB_VERSION_PREV_STABLE (G_ENCODE_VERSION (GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION - 1))
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#else
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#define GLIB_VERSION_PREV_STABLE (G_ENCODE_VERSION (GLIB_MAJOR_VERSION, GLIB_MINOR_VERSION - 2))
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#endif
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/**
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* GLIB_VERSION_MIN_REQUIRED:
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*
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* A macro that should be defined by the user prior to including
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* the glib.h header.
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* The definition should be one of the predefined GLib version
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* macros: %GLIB_VERSION_2_26, %GLIB_VERSION_2_28,...
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*
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* This macro defines the earliest version of GLib that the package is
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* required to be able to compile against.
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*
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* If the compiler is configured to warn about the use of deprecated
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* functions, then using functions that were deprecated in version
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* %GLIB_VERSION_MIN_REQUIRED or earlier will cause warnings (but
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* using functions deprecated in later releases will not).
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*
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* Since: 2.32
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*/
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/* If the package sets GLIB_VERSION_MIN_REQUIRED to some future
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* GLIB_VERSION_X_Y value that we don't know about, it will compare as
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* 0 in preprocessor tests.
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*/
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#ifndef GLIB_VERSION_MIN_REQUIRED
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# define GLIB_VERSION_MIN_REQUIRED (GLIB_VERSION_CUR_STABLE)
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#elif GLIB_VERSION_MIN_REQUIRED == 0
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# undef GLIB_VERSION_MIN_REQUIRED
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# define GLIB_VERSION_MIN_REQUIRED (GLIB_VERSION_CUR_STABLE + 2)
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#endif
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/**
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* GLIB_VERSION_MAX_ALLOWED:
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*
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* A macro that should be defined by the user prior to including
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* the glib.h header.
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* The definition should be one of the predefined GLib version
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* macros: %GLIB_VERSION_2_26, %GLIB_VERSION_2_28,...
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*
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* This macro defines the latest version of the GLib API that the
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* package is allowed to make use of.
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*
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* If the compiler is configured to warn about the use of deprecated
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* functions, then using functions added after version
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* %GLIB_VERSION_MAX_ALLOWED will cause warnings.
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*
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* Unless you are using GLIB_CHECK_VERSION() or the like to compile
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* different code depending on the GLib version, then this should be
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* set to the same value as %GLIB_VERSION_MIN_REQUIRED.
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*
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* Since: 2.32
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*/
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#if !defined (GLIB_VERSION_MAX_ALLOWED) || (GLIB_VERSION_MAX_ALLOWED == 0)
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# undef GLIB_VERSION_MAX_ALLOWED
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# define GLIB_VERSION_MAX_ALLOWED (GLIB_VERSION_CUR_STABLE)
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#endif
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/* sanity checks */
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#if GLIB_VERSION_MIN_REQUIRED > GLIB_VERSION_CUR_STABLE
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#error "GLIB_VERSION_MIN_REQUIRED must be <= GLIB_VERSION_CUR_STABLE"
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#endif
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#if GLIB_VERSION_MAX_ALLOWED < GLIB_VERSION_MIN_REQUIRED
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#error "GLIB_VERSION_MAX_ALLOWED must be >= GLIB_VERSION_MIN_REQUIRED"
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#endif
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#if GLIB_VERSION_MIN_REQUIRED < GLIB_VERSION_2_26
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#error "GLIB_VERSION_MIN_REQUIRED must be >= GLIB_VERSION_2_26"
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#endif
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/* These macros are used to mark deprecated functions in GLib headers,
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* and thus have to be exposed in installed headers. But please
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* do *not* use them in other projects. Instead, use G_DEPRECATED
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* or define your own wrappers around it.
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*/
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#define GLIB_AVAILABLE_IN_ALL _GLIB_EXTERN
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/* XXX: Every new stable minor release should add a set of macros here */
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#if GLIB_VERSION_MIN_REQUIRED >= GLIB_VERSION_2_26
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# define GLIB_DEPRECATED_IN_2_26 GLIB_DEPRECATED
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# define GLIB_DEPRECATED_IN_2_26_FOR(f) GLIB_DEPRECATED_FOR(f)
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#else
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# define GLIB_DEPRECATED_IN_2_26 _GLIB_EXTERN
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# define GLIB_DEPRECATED_IN_2_26_FOR(f) _GLIB_EXTERN
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#endif
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#if GLIB_VERSION_MAX_ALLOWED < GLIB_VERSION_2_26
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# define GLIB_AVAILABLE_IN_2_26 GLIB_UNAVAILABLE(2, 26)
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#else
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# define GLIB_AVAILABLE_IN_2_26 _GLIB_EXTERN
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#endif
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#if GLIB_VERSION_MIN_REQUIRED >= GLIB_VERSION_2_28
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# define GLIB_DEPRECATED_IN_2_28 GLIB_DEPRECATED
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# define GLIB_DEPRECATED_IN_2_28_FOR(f) GLIB_DEPRECATED_FOR(f)
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#else
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# define GLIB_DEPRECATED_IN_2_28 _GLIB_EXTERN
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# define GLIB_DEPRECATED_IN_2_28_FOR(f) _GLIB_EXTERN
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#endif
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#if GLIB_VERSION_MAX_ALLOWED < GLIB_VERSION_2_28
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# define GLIB_AVAILABLE_IN_2_28 GLIB_UNAVAILABLE(2, 28)
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#else
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# define GLIB_AVAILABLE_IN_2_28 _GLIB_EXTERN
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#endif
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#if GLIB_VERSION_MIN_REQUIRED >= GLIB_VERSION_2_30
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# define GLIB_DEPRECATED_IN_2_30 GLIB_DEPRECATED
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# define GLIB_DEPRECATED_IN_2_30_FOR(f) GLIB_DEPRECATED_FOR(f)
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#else
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# define GLIB_DEPRECATED_IN_2_30 _GLIB_EXTERN
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# define GLIB_DEPRECATED_IN_2_30_FOR(f) _GLIB_EXTERN
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#endif
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#if GLIB_VERSION_MAX_ALLOWED < GLIB_VERSION_2_30
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# define GLIB_AVAILABLE_IN_2_30 GLIB_UNAVAILABLE(2, 30)
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#else
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# define GLIB_AVAILABLE_IN_2_30 _GLIB_EXTERN
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#endif
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#if GLIB_VERSION_MIN_REQUIRED >= GLIB_VERSION_2_32
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# define GLIB_DEPRECATED_IN_2_32 GLIB_DEPRECATED
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# define GLIB_DEPRECATED_IN_2_32_FOR(f) GLIB_DEPRECATED_FOR(f)
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#else
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# define GLIB_DEPRECATED_IN_2_32 _GLIB_EXTERN
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# define GLIB_DEPRECATED_IN_2_32_FOR(f) _GLIB_EXTERN
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#endif
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#if GLIB_VERSION_MAX_ALLOWED < GLIB_VERSION_2_32
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# define GLIB_AVAILABLE_IN_2_32 GLIB_UNAVAILABLE(2, 32)
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#else
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# define GLIB_AVAILABLE_IN_2_32 _GLIB_EXTERN
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#endif
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#if GLIB_VERSION_MIN_REQUIRED >= GLIB_VERSION_2_34
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# define GLIB_DEPRECATED_IN_2_34 GLIB_DEPRECATED
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# define GLIB_DEPRECATED_IN_2_34_FOR(f) GLIB_DEPRECATED_FOR(f)
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#else
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# define GLIB_DEPRECATED_IN_2_34 _GLIB_EXTERN
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# define GLIB_DEPRECATED_IN_2_34_FOR(f) _GLIB_EXTERN
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#endif
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#if GLIB_VERSION_MAX_ALLOWED < GLIB_VERSION_2_34
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# define GLIB_AVAILABLE_IN_2_34 GLIB_UNAVAILABLE(2, 34)
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#else
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# define GLIB_AVAILABLE_IN_2_34 _GLIB_EXTERN
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#endif
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#if GLIB_VERSION_MIN_REQUIRED >= GLIB_VERSION_2_36
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# define GLIB_DEPRECATED_IN_2_36 GLIB_DEPRECATED
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# define GLIB_DEPRECATED_IN_2_36_FOR(f) GLIB_DEPRECATED_FOR(f)
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#else
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# define GLIB_DEPRECATED_IN_2_36 _GLIB_EXTERN
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# define GLIB_DEPRECATED_IN_2_36_FOR(f) _GLIB_EXTERN
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#endif
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#if GLIB_VERSION_MAX_ALLOWED < GLIB_VERSION_2_36
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# define GLIB_AVAILABLE_IN_2_36 GLIB_UNAVAILABLE(2, 36)
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#else
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# define GLIB_AVAILABLE_IN_2_36 _GLIB_EXTERN
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#endif
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#endif /* __G_VERSION_MACROS_H__ */
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