qt5: support feature files generated by Qt Configuration Tool

Qt Configuration Tool can be used to generate feature files for each
Qt module, which contain enabled and disabled feature flags. This
bbclass can be used to enable bitbake to use those files to configure
Qt modules more thoroughly. These options will override any
PACKAGECONFIG options that might conflict.

Use by inheriting the qt5-features in a qt module recipe (using bbappend),
which you want to configure. By default the bbclass expects the feature
files to be named according to the Qt modules names (QtBase -> qtbase.opt)
and placed in a 'features' subfolder next to the recipes.

Task-number: QTBUG-68950
Change-Id: Ie580512346a5eb09cd65afc7474b5a88f1416a56
Reviewed-by: Kari Oikarinen <kari.oikarinen@qt.io>

1 files changed, 40 insertions, 0 deletions

diff --git a/meta-boot2qt/classes/qt5-features.bbclass b/meta-boot2qt/classes/qt5-features.bbclass
new file mode 100644
index 0000000..89b3ee6
--- /dev/null
+++ b/meta-boot2qt/classes/qt5-features.bbclass
@@ -0,0 +1,40 @@
+############################################################################
+##
+## Copyright (C) 2018 The Qt Company Ltd.
+## Contact: https://www.qt.io/licensing/
+##
+## This file is part of the Boot to Qt meta layer.
+##
+## $QT_BEGIN_LICENSE:GPL$
+## Commercial License Usage
+## Licensees holding valid commercial Qt licenses may use this file in
+## accordance with the commercial license agreement provided with the
+## Software or, alternatively, in accordance with the terms contained in
+## a written agreement between you and The Qt Company. For licensing terms
+## and conditions see https://www.qt.io/terms-conditions. For further
+## information use the contact form at https://www.qt.io/contact-us.
+##
+## GNU General Public License Usage
+## Alternatively, this file may be used under the terms of the GNU
+## General Public License version 3 or (at your option) any later version
+## approved by the KDE Free Qt Foundation. The licenses are as published by
+## the Free Software Foundation and appearing in the file LICENSE.GPL3
+## included in the packaging of this file. Please review the following
+## information to ensure the GNU General Public License requirements will
+## be met: https://www.gnu.org/licenses/gpl-3.0.html.
+##
+## $QT_END_LICENSE$
+##
+############################################################################
+
+FEATURES := "${THISDIR}/features/${QT_MODULE}.opt"
+do_configure[file-checksums] += "${FEATURES}:True"
+
+def qt_features(d):
+    featurefile = d.getVar('FEATURES', True)
+    with open(featurefile, 'r') as f:
+        features = f.read().replace('\n', ' ')
+    return features
+
+QT_CONFIG_FLAGS_append_class-target = " ${@qt_features(d)}"
+EXTRA_QMAKEVARS_CONFIGURE_append_class-target = " ${@qt_features(d)}"