RK3568平台Qt编译过程

一、编译脚本

auto_build.sh

#!/bin/sh

export CROSS_COMPILE=/opt/OK3568-linux-source/prebuilts/gcc/linux-x86/aarch64/gcc-buildroot-9.3.0-2020.03-x86_64_aarch64-rockchip-linux-gnu/bin/aarch64-rockchip-linux-gnu-
export PATH=/opt/OK3568-linux-source/prebuilts/gcc/linux-x86/aarch64/gcc-buildroot-9.3.0-2020.03-x86_64_aarch64-rockchip-linux-gnu/bin/:$PATH
export ARCH=arm64

./configure -v -prefix /opt/Qt_5.11.0_RK3568 \
-verbose \
-shared \
-release \
-opensource \
-confirm-license \
-xplatform aarch64-rockchip-linux-gnu \
-make libs \
-no-opengl \
-nomake tools -nomake tests \
-skip qtdeclarative \
-optimize-size \
-nomake tests \
-nomake examples \
-recheck-all	

make -j8
make install

二、修改平台配置文件

我用的平台是aarch64-rockchip-linux-gnu

修改配置文件qt-everywhere-src-5.11.0/qtbase/mkspecs/aarch64-rockchip-linux-gnu/qmake.conf

#
# qmake configuration for building with aarch64-linux-gnu-g++
#

MAKEFILE_GENERATOR      = UNIX
CONFIG                 += incremental
QMAKE_INCREMENTAL_STYLE = sublib

QMAKE_CFALGS_RELEASE += -O2 -march=armv8-a -lts
QMAKE_CXXFLAGS_RELEASE += -O2 -march=armv8-a -lts

include(../common/linux.conf)
include(../common/gcc-base-unix.conf)
include(../common/g++-unix.conf)

# modifications to g++.conf
QMAKE_CC                = aarch64-rockchip-linux-gnu-gcc
QMAKE_CXX               = aarch64-rockchip-linux-gnu-g++
QMAKE_LINK              = aarch64-rockchip-linux-gnu-g++
QMAKE_LINK_SHLIB        = aarch64-rockchip-linux-gnu-g++

# modifications to linux.conf
QMAKE_AR                = aarch64-rockchip-linux-gnu-ar cqs
QMAKE_OBJCOPY           = aarch64-rockchip-linux-gnu-objcopy
QMAKE_NM                = aarch64-rockchip-linux-gnu-nm -P
QMAKE_STRIP             = aarch64-rockchip-linux-gnu-strip

load(qt_config)

三、编译

问题1：

参考https://github.com/InBetweenNames/gentooLTO/issues/286
https://codereview.qt-project.org/c/qt/qtbase/+/245425

这是GCC9编译出现的问题
修改文件src/corelib/global/qrandom.cpp 

问题2：

参考https://bugs.gentoo.org/669446

修改qtbase/src/corelib/io/qfilesystemengine_unix.cpp，注释94行

四、配置qt编译环境Kits

error： the compiler cannot produce code for the qt version

需要配置ABI