Qt5 CMake cross compile

cmake_minimum_required(VERSION 2.8)



if (${ARM})

 set(CMAKE\_SYSTEM\_NAME Linux)

 set(CMAKE\_SYSTEM\_PROCESSOR arm)



 set(CMAKE_STAGING_PREFIX $ENV{HOME}/dev/kndos/rootfs)

 set(CMAKE\_SYSROOT ${CMAKE\_STAGING\_PREFIX})

 set(CMAKE_FIND_ROOT_PATH /usr/lib/arm-linux-gnueabihf ${CMAKE\_STAGING\_PREFIX})

 set(CMAKE_LIBRARY_ARCHITECTURE arm-linux-gnueabihf)



 set(CMAKE_C_COMPILER arm-linux-gnueabihf-gcc)

 set(CMAKE_CXX_COMPILER arm-linux-gnueabihf-g++)



 set(CMAKE\_FIND\_ROOT\_PATH\_MODE\_INCLUDE ONLY)

 set(CMAKE\_FIND\_ROOT\_PATH\_MODE\_PACKAGE ONLY)

 set(CMAKE\_FIND\_ROOT\_PATH\_MODE\_LIBRARY ONLY)

 set(CMAKE\_FIND\_ROOT\_PATH\_MODE\_PROGRAM NEVER)

endif ()



project(tqml)



set(CMAKE_CXX_STANDARD 14)



set(CMAKE\_AUTOMOC ON)

set(CMAKE\_AUTORCC ON)

set(CMAKE\_AUTOUIC ON)



find\_package(Qt5 COMPONENTS Widgets Qml Quick REQUIRED)



if (${CMAKE\_CROSSCOMPILING})

 set(HOST_QT_BIN /usr/lib/x86_64-linux-gnu/qt5/bin)

 set\_target\_properties(Qt5::uic PROPERTIES IMPORTED\_LOCATION ${HOST\_QT\_BIN}/uic)

 set\_target\_properties(Qt5::moc PROPERTIES IMPORTED\_LOCATION ${HOST\_QT\_BIN}/moc)

 set\_target\_properties(Qt5::rcc PROPERTIES IMPORTED\_LOCATION ${HOST\_QT\_BIN}/rcc)

endif ()



add\_executable(${PROJECT\_NAME} main.cpp main.qml main.qrc)

target\_link\_libraries(${PROJECT\_NAME}

 Qt5::Widgets

 Qt5::Qml

 Qt5::Quick)

CMakeLists.txt 其实只需要注意一个问题即可，其他的都有上位机相同，CMAKE_FIND_ROOT_PATH_MODE_PROGRAM虽然设置成了NEVER，但是并不会改变Qt5::uic/moc/rcc的查找方式，需要覆盖下，使用上位机的uic/moc/rcc

注：我的rootfs就是使用debian-bootstrap构造的rootfs