Add a RPi4 device spec

[ChangeLog][Platform Specific Changes][Linux] Added a device spec for
Raspberry Pi 4 (32-bit, V3D)

Change-Id: Idea889842a89dcc74705f1bb9559953dadc07251
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Reviewed-by: Andy Nichols <andy.nichols@qt.io>

2 files changed, 80 insertions, 0 deletions

diff --git a/mkspecs/devices/linux-rasp-pi4-v3d-g++/qmake.conf b/mkspecs/devices/linux-rasp-pi4-v3d-g++/qmake.conf
new file mode 100644
index 0000000000..69b0c761a8
--- /dev/null
+++ b/mkspecs/devices/linux-rasp-pi4-v3d-g++/qmake.conf
@@ -0,0 +1,40 @@
+# qmake configuration for the Raspberry Pi 4 (32-bit) using the Mesa V3D
+# graphics stack. (not the Broadcom stack)
+#
+# This supports accelerated OpenGL both for X11 and DRM/KMS.  Perhaps
+# Wayland too.
+#
+# Tested with a sysroot created from Raspbian Buster and a gcc 7.4
+# toolchain from Linaro.
+#
+# Example configure command line, assuming installation to
+# /usr/local/qt5pi on device and ~/rpi/qt5 on the host:
+#
+# ./configure -release -opengl es2 -device linux-rasp-pi4-v3d-g++ -device-option CROSS_COMPILE=~/rpi/gcc-linaro-7.4.1-2019.02-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf- \
+#   -sysroot ~/rpi/sysroot -opensource -confirm-license -make libs -prefix /usr/local/qt5pi -extprefix ~/rpi/qt5 -v
+#
+# Check the configure output carefully. EGLFS, EGLFS GBM, and EGL on X11
+# should all be 'yes'. Otherwise something is wrong.
+#
+# If getting linker errors like "undefined reference to `_dl_stack_flags'" check the
+# symlinks in the sysroot, they were probably not adjusted
+# correctly. F.ex. sysroot/usr/lib/arm-linux-gnueabihf/libpthread.so must point to
+# sysroot/lib/arm-linux-gnueabihf/libpthread.so.0. If it is a broken link instead, bad
+# things will happen.
+
+include(../common/linux_device_pre.conf)
+
+QMAKE_LIBS_EGL         += -lEGL
+QMAKE_LIBS_OPENGL_ES2  += -lGLESv2 -lEGL
+
+QMAKE_CFLAGS            = -march=armv8-a -mtune=cortex-a72 -mfpu=crypto-neon-fp-armv8
+QMAKE_CXXFLAGS          = $$QMAKE_CFLAGS
+
+DISTRO_OPTS            += hard-float
+DISTRO_OPTS            += deb-multi-arch
+
+EGLFS_DEVICE_INTEGRATION = eglfs_kms
+
+include(../common/linux_arm_device_post.conf)
+
+load(qt_config)
diff --git a/mkspecs/devices/linux-rasp-pi4-v3d-g++/qplatformdefs.h b/mkspecs/devices/linux-rasp-pi4-v3d-g++/qplatformdefs.h
new file mode 100644
index 0000000000..4435fb2557
--- /dev/null
+++ b/mkspecs/devices/linux-rasp-pi4-v3d-g++/qplatformdefs.h
@@ -0,0 +1,40 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the qmake spec of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or 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.GPL2 and 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-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "../../linux-g++/qplatformdefs.h"