为 raspberry pi 4 交叉编译 qt6

问题描述

我已经阅读了这个 qt6 doc，所以我开始玩这个，但也许文档泄漏了一些信息并且配置步骤很快失败并出现此错误：

CMake Error at cmake/QtBaseConfigureTests.cmake:21 (message):
  Failed to compile architecture detection file.
Call Stack (most recent call first):
  cmake/QtBaseConfigureTests.cmake:120 (qt_run_config_test_architecture)
  cmake/QtBaseConfigureTests.cmake:133 (qt_run_qtbase_config_tests)
  CMakeLists.txt:68 (include)

我的 cmake 命令在这里：

'/usr/local/bin/cmake' '-DQT_HOST_PATH=/opt/qt6/6.0.1/gcc_64' '-DCMAKE_TOOLCHAIN_FILE=/home/mattia/raspi4-qt6/qt-cross/toolchain.cmake' '-DQT_BUILD_TOOLS_WHEN_CROSSCOMPILING=ON' '-DCMAKE_INSTALL_PREFIX=/usr/local/qt_v6.0.1' '-DCMAKE_STAGING_PREFIX=/home/mattia/raspi4-qt6/build/qt_v6.0.1' '-DQT_BUILD_EXAMPLES=FALSE' '-DQT_BUILD_TESTS=FALSE' '-DCMAKE_BUILD_TYPE=Release' '-DINPUT_opengl=es2' '-DINPUT_eglfs=ON' '-G' 'Ninja' '/home/mattia/raspi4-qt6/src/qtbase

虽然我的 toolchaine.cmake 在这里：

cmake_minimum_required(VERSION 3.18)
include_guard(GLOBAL)

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR armv8)

set(TARGET_SYSROOT /home/mattia/raspi4-qt6/sysroot)
set(CROSS_COMPILER /home/mattia/raspi4-qt6/tools/cross-pi-gcc-10.2.0-2/bin)

set(CMAKE_SYSROOT ${TARGET_SYSROOT})


set(CMAKE_C_COMPILER ${CROSS_COMPILER}/arm-linux-gnueabihf-gcc)
set(CMAKE_CXX_COMPILER ${CROSS_COMPILER}/arm-linux-gnueabihf-g++)
set(ENV{PKG_CONFIG_PATH} "")
set(ENV{PKG_CONFIG_LIBDIR} ${CMAKE_SYSROOT}/usr/lib/arm-gnueabihf/pkgconfig:${CMAKE_SYSROOT}/usr/share/pkgconfig)
set(ENV{PKG_CONFIG_SYSROOT_DIR} ${CMAKE_SYSROOT})


set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

解决方法

我想您正在使用 Cygwin。我对 cygwin 有同样的问题，因为 ARM 编译器不理解 cygwin 路径 /cygdrive/d/cygwin/home.....

对于 windows 主机上的交叉编译 qt6，请使用 windows cmake 和 windows CMD。不需要 Cygwin..