src/3rdparty: remove xkbcommon

The only reason why we bundled this library ~6 years ago was because
it was not available on distributions that we supported at the time,
but library was a hard dependency for XCB plugin. See:
2122e731abdb619249df89642c0800640b2fa428

Later more and more projects started to depend on it (compose input
context plugin, libinput, mir, wayland). The configuration had become
too complex, because some projects used bundled and some used the
version from the system.

Having libxkbcommon in 3rdparty sources is not necessary anymore, after
RHEL 6.6 was removed from the list of supported platforms for Qt 5.12.

Ubuntu 16.04  - 0.5.0
Ubuntu 18.04  - 0.8.0
openSUSE 42.3 - 0.6.1
RHEL-7.4      - 0.7.1

This will also simplify further development, e.g. QTBUG-42181

Bumped the minimal required version 0.4.1 -> 0.5.0.

The patch also contains a code marked with "TRANSITION HACK", which
is temporary needed so we can update the dependent wayland module.

[ChangeLog][Third-Party Code] Removed xkbcommon from bundled sources.
This library is present on all supported platforms. The minimal required
version now is 0.5.0.

Task-number: QTBUG-65503
Change-Id: Iec50829bb6f8fbb19f3c4e4ad62e332beb837de5
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>

1 files changed, 0 insertions, 100 deletions

diff --git a/src/3rdparty/xkbcommon/src/compose/table.h b/src/3rdparty/xkbcommon/src/compose/table.h
deleted file mode 100644
index 05a415ffa3..0000000000
--- a/src/3rdparty/xkbcommon/src/compose/table.h
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * Copyright © 2013 Ran Benita <ran234@gmail.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#ifndef COMPOSE_COMPOSE_H
-#define COMPOSE_COMPOSE_H
-
-#include "xkbcommon/xkbcommon-compose.h"
-#include "utils.h"
-#include "context.h"
-
-/*
- * The compose table data structure is a simple trie.  An example will
- * help.  Given these sequences:
- *
- *      <A> <B>        : "first"  dead_a
- *      <A> <C> <D>    : "second" dead_b
- *      <E> <F>        : "third"  dead_c
- *
- * the trie would look like:
- *
- * [root] ---> [<A>] -----------------> [<E>] -#
- *   |           |                        |
- *   #           v                        v
- *             [<B>] ---> [<C>] -#      [<F>] -#
- *               |          |             -
- *               #          v             #
- *                        [<D>] -#
- *                          |
- *                          #
- * where:
- * - [root] is a special empty root node.
- * - [<X>] is a node for a sequence keysym <X>.
- * - right arrows are `next` pointers.
- * - down arrows are `successor` pointers.
- * - # is a nil pointer.
- *
- * The nodes are all kept in a contiguous array.  Pointers are represented
- * as integer offsets into this array.  A nil pointer is represented as 0
- * (which, helpfully, is the offset of the empty root node).
- *
- * Nodes without a successor are leaf nodes.  Since a sequence cannot be a
- * prefix of another, these are exactly the nodes which terminate the
- * sequences (in a bijective manner).
- *
- * A leaf contains the result data of its sequence.  The result keysym is
- * contained in the node struct itself; the result UTF-8 string is a byte
- * offset into an array of the form "\0first\0second\0third" (the initial
- * \0 is so offset 0 points to an empty string).
- */
-
-struct compose_node {
-    xkb_keysym_t keysym;
-    /* Offset into xkb_compose_table::nodes. */
-    unsigned int next:31;
-    bool is_leaf:1;
-
-    union {
-        /* Offset into xkb_compose_table::nodes. */
-        uint32_t successor;
-        struct {
-            /* Offset into xkb_compose_table::utf8. */
-            uint32_t utf8;
-            xkb_keysym_t keysym;
-        } leaf;
-    } u;
-};
-
-struct xkb_compose_table {
-    int refcnt;
-    enum xkb_compose_format format;
-    enum xkb_compose_compile_flags flags;
-    struct xkb_context *ctx;
-
-    char *locale;
-
-    darray_char utf8;
-    darray(struct compose_node) nodes;
-};
-
-#endif