ref:
https://www.waveshare.net/study/article-1042-1.html
2024年我的pi zero 2W裝的是bulleye,但QT官方說QT4只有buster,沒有bulleye
問題,與排除:
1「sudo apt-get build-dep libqt5gui5」會遇到「you need to put some deb-src URIs in your sources.list」錯誤,要你加入apt source
此時,請到「/etc/apt/sources.list」把
「#deb-src http://raspbian.raspberrypi.org/raspbian/ bullseye main contrib non-free rpi」
的「#」拿掉,再用apt-update,才會找到套件
之後,請務必照以下的步驟找到/置放設定檔
-------------------------
下载树莓派的编译配置文件
~ $ git clone https://github.com/oniongarlic/qt-raspberrypi-configuration.git
放到Qt的源代码中。具体为：
common/raspberrypi.conf 放到 /qtbase/mkspecs/common/
linux-rpi2-g++ , linux-rpi3-g++ , linux-rpi-g++ , linux-rpi-vc4-g++ , linux-rpi4-v3d-g++ 这4个文件夹放到 /qtbase/mkspecs/中
------------------上述這過程一定要做,別偷懶!!-------
2.configure的指令要改一下,因為不是用pi4,是用pi zero,所以要小改
(其中build $是路徑,不是指令)
----------------------
build $ PKG_CONFIG_LIBDIR=/usr/lib/arm-linux-gnueabihf/pkgconfig:/usr/share/pkgconfig \
../qt-everywhere-src-5.14.2/configure -platform linux-rpi-g++ \
-D__ARM_ARCH_5TEJ__ \
-v \
-opengl es2 -eglfs \
-no-gtk \
-opensource -confirm-license -release \
-reduce-exports \
-force-pkg-config \
-nomake examples -no-compile-examples \
-skip qtwayland \
-skip qtwebengine \
-no-feature-geoservices_mapboxgl \
-qt-pcre \
-no-pch \
-ssl \
-evdev \
-system-freetype \
-fontconfig \
-glib \
-prefix /opt/Qt5.14 \
-qpa eglfs \
-qt-xcb
-----------------------
3.make中,遇到錯誤
cannot find -lGLESv2
cannot find -lbrcmGLESv2
解法:請到/home/john/qt-everywhere-src-5.14.2/qtbase/mkspecs/commonqt-everywhere-src-5.14.2/qtbase/mkspecs/common修改「raspberrypi.conf」
-----
QMAKE_LIBS_EGL = -lbrcmEGL -lbrcmGLESv2
QMAKE_LIBS_OPENVG = -lbrcmEGL -lbrcmOpenVG -lbrcmGLESv2
QMAKE_LIBS_OPENGL_ES2 = -lbrcmGLESv2 -lbrcmEGL
QMAKE_LIBS_BCM_HOST = -lbcm_host
EGLFS_DEVICE_INTEGRATION = eglfs_brcm
-----
save後,再去 make
4.再make,再遇到錯誤
----------------------------
qeglfsbrcmintegration.cpp:74:5: error: ‘EGL_DISPMANX_WINDOW_T’ was not declared in this scope
74 | EGL_DISPMANX_WINDOW_T *eglWindow = new EGL_DISPMANX_WINDOW_T;
----------------------------
這要改一點地方,先用bulleye xwin之下的檔案總管找「eglplatform.h」
每一個eglplatform.h都加上這個
-----
typedef uint32_t DISPMANX_ELEMENT_HANDLE_T;
typedef struct {
DISPMANX_ELEMENT_HANDLE_T element;
int width;
int height;
} EGL_DISPMANX_WINDOW_T;
-----
然後,把這個檔案qeglfsbrcmintegration.cpp 蓋到 /home/john/qt-everywhere-src-5.14.2/qtbase/src/plugins/platforms/eglfs/deviceintegration/eglfs_brcm 裡去
(當然,這還是會有error,所以...也要把「qeglfsbrcmintegration.h」加上上面那些typedef...宣告,才能繼續給他make下去)
------------
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins 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 "qeglfsbrcmintegration.h"
#include <bcm_host.h>
QT_BEGIN_NAMESPACE
static DISPMANX_DISPLAY_HANDLE_T dispman_display = 0;
static EGLNativeWindowType createDispmanxLayer(const QPoint &pos, const QSize &size, int z, DISPMANX_FLAGS_ALPHA_T flags)
{
VC_RECT_T dst_rect;
dst_rect.x = pos.x();
dst_rect.y = pos.y();
dst_rect.width = size.width();
dst_rect.height = size.height();
VC_RECT_T src_rect;
src_rect.x = 0;
src_rect.y = 0;
src_rect.width = size.width() << 16;
src_rect.height = size.height() << 16;
DISPMANX_UPDATE_HANDLE_T dispman_update = vc_dispmanx_update_start(0);
VC_DISPMANX_ALPHA_T alpha;
alpha.flags = flags;
alpha.opacity = 0xFF;
alpha.mask = 0;
DISPMANX_ELEMENT_HANDLE_T dispman_element = vc_dispmanx_element_add(
dispman_update, dispman_display, z, &dst_rect, 0, &src_rect,
DISPMANX_PROTECTION_NONE, &alpha, (DISPMANX_CLAMP_T *)NULL, (DISPMANX_TRANSFORM_T)0);
vc_dispmanx_update_submit_sync(dispman_update);
EGL_DISPMANX_WINDOW_T *eglWindow = new EGL_DISPMANX_WINDOW_T;
eglWindow->element = dispman_element;
eglWindow->width = size.width();
eglWindow->height = size.height();
return (EGLNativeWindowType)eglWindow;
}
static void destroyDispmanxLayer(EGLNativeWindowType window)
{
EGL_DISPMANX_WINDOW_T *eglWindow = (EGL_DISPMANX_WINDOW_T*)(window);
DISPMANX_UPDATE_HANDLE_T dispman_update = vc_dispmanx_update_start(0);
vc_dispmanx_element_remove(dispman_update, eglWindow->element);
vc_dispmanx_update_submit_sync(dispman_update);
delete eglWindow;
}
void QEglFSBrcmIntegration::platformInit()
{
bcm_host_init();
}
static int getDisplayId()
{
// As defined in vc_dispmanx_types.h
// DISPMANX_ID_MAIN_LCD 0
// DISPMANX_ID_AUX_LCD 1
// DISPMANX_ID_HDMI 2
// DISPMANX_ID_SDTV 3
// DISPMANX_ID_FORCE_LCD 4
// DISPMANX_ID_FORCE_TV 5
// DISPMANX_ID_FORCE_OTHER 6 /* non-default display */
static const int dispmanxId = qEnvironmentVariableIntValue("QT_QPA_EGLFS_DISPMANX_ID");
return (dispmanxId >= 0 && dispmanxId <= 6) ? dispmanxId : 0;
}
EGLNativeDisplayType QEglFSBrcmIntegration::platformDisplay() const
{
dispman_display = vc_dispmanx_display_open(getDisplayId());
return EGL_DEFAULT_DISPLAY;
}
void QEglFSBrcmIntegration::platformDestroy()
{
vc_dispmanx_display_close(dispman_display);
}
QSize QEglFSBrcmIntegration::screenSize() const
{
uint32_t width, height;
graphics_get_display_size(getDisplayId(), &width, &height);
return QSize(width, height);
}
EGLNativeWindowType QEglFSBrcmIntegration::createNativeWindow(QPlatformWindow *window, const QSize &size, const QSurfaceFormat &format)
{
Q_UNUSED(window)
return createDispmanxLayer(QPoint(0, 0), size, 1, format.hasAlpha() ? DISPMANX_FLAGS_ALPHA_FROM_SOURCE : DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS);
}
void QEglFSBrcmIntegration::destroyNativeWindow(EGLNativeWindowType window)
{
destroyDispmanxLayer(window);
}
bool QEglFSBrcmIntegration::hasCapability(QPlatformIntegration::Capability cap) const
{
switch (cap) {
case QPlatformIntegration::ThreadedPixmaps:
case QPlatformIntegration::OpenGL:
case QPlatformIntegration::ThreadedOpenGL:
case QPlatformIntegration::BufferQueueingOpenGL:
return true;
default:
return false;
}
}
QT_END_NAMESPACE
-------------------------------------之後就沒遇到什麼錯誤(然後花了三天才make 完)
先裝起來,日後試出在他台ubuntu做cross link & 在EGFL模式下跑都正常的話,再來向大家報告
------2024/10/31:颱風天,讀書天--繼續玩我們的QT大法-------
在ubuntu 22.04 做Cross Link的設定,可參考這篇,我測過可用
https://blog.csdn.net/weixin_44658484/article/details/118655494
(在這次的建構中,我是把zero 2W設定為跟pi3一樣等級的板子,
所以configure時, -device是以「-device linux-rasp-pi3-g++」設定的)
惟一要注意的是在configure階段時會遇到類似以下的訊息:
/qfloat16.h:300:7: error: 'numeric_limits' is not a class template
300 | class numeric limits<QT PREPEND_NAMESPACE(qfloat16)> : public numeric limits<float>
這時要在qglobal.h加入<limits>,不是隨便加,要看#if條件加的
----------------
#ifdef __cplusplus
# include <type_traits>
# include <cstddef>
# include <utility>
# include <limits>
#endif
----------------
,save後,再去configure,就正確了
之後,你會在make階段會遇到「 : error: ‘EGL_DISPMANX_WINDOW_T’ was not declared in this scope 」錯誤
沒錯,就是照之前寫的那樣去改.h & .c 檔,就可以完成make & make install了
(颱風後要去修屋簷了...)
