基于Qt6的交叉编译，C启动文件始终找不到相应的库

LucasYuen · 发表于 2024-11-22 17:03:49

参考资料：https://doc.embedfire.com/linux/ ... /install_arm_3.html Qt开发环境交叉编译

目的：基于上面的教程，进行Qt6.7.3关于armhf架构的交叉编译。
当前环境：目标设备(Zynq):ubuntu18.04，ppa升级编译器为11.4.0；宿主机：ubuntu18.04，ppa升级编译器11.4.0；
当前我是能在宿主机上完成主机端的源码编译，运行正常。但是进行交叉编译时，我仿照教程设置了sysroot，以及toolchain.cmake和qmake.conf。但是运行时报错找不到相关的C启动文件库，编译器无法进行简单文件编译：

cmake ../qt-everywhere-src-6.7.3/ -GNinja -DCMAKE_BUILD_TYPE=Release -DINPUT_opengl=es2 -DQT_BUILD_EXAMPLES=OFF -DQT_BUILD_TESTS=OFF -DQT_HOST_PATH=$HOME/qt/qt6Host -DCMAKE_STAGING_PREFIX=$HOME/sysroot/opt/prefix -DCMAKE_INSTALL_PREFIX=$HOME/sysroot/opt/prefix -DCMAKE_TOOLCHAIN_FILE=$HOME/qt/toolchain.cmake -DQT_QMAKE_TARGET_MKSPEC=devices/linux-zynq-g++ -DQT_FEATURE_xcb=ON -DFEATURE_xcb_xlib=ON -DQT_FEATURE_xlib=ON -DFEATURE_qtwebengine_build=OFF
-- The CXX compiler identification is GNU 11.3.1
-- The C compiler identification is GNU 11.3.1
-- The ASM compiler identification is GNU
-- Found assembler: /opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-gcc
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - failed
-- Check for working CXX compiler: /opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-g++
-- Check for working CXX compiler: /opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-g++ - broken
<font color="#ff0000">CMake Error at /home/lucasyuen/Qt6.7.3/Tools/CMake/share/cmake-3.29/Modules/CMakeTestCXXCompiler.cmake:73 (message):
The C++ compiler
"/opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-g++"
is not able to compile a simple test program.
It fails with the following output:
Change Dir: '/home/lucasyuen/qt/qt6-cross/build/CMakeFiles/CMakeScratch/TryCompile-5MWA5S'
Run Build Command(s): /home/lucasyuen/Qt6.7.3/Tools/Ninja/ninja -v cmTC_1591e
[1/2] /opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-g++ --sysroot=/home/lucasyuen/sysroot -fPIC -Wl,-rpath-link,/home/lucasyuen/sysroot/lib/arm-linux-gnueabihf -fPIC -Wl,-rpath-link,/home/lucasyuen/sysroot/usr/lib/arm-linux-gnueabihf -L/home/lucasyuen/sysroot/lib -L/home/lucasyuen/sysroot/lib/arm-linux-gnueabihf -L/home/lucasyuen/sysroot/usr/lib/arm-linux-gnueabihf -L/home/lucasyuen/sysroot/usr/lib -I/home/lucasyuen/sysroot/usr/include -I/home/lucasyuen/sysroot/usr/include/arm-linux-gnueabihf -o CMakeFiles/cmTC_1591e.dir/testCXXCompiler.cxx.o -c /home/lucasyuen/qt/qt6-cross/build/CMakeFiles/CMakeScratch/TryCompile-5MWA5S/testCXXCompiler.cxx
[2/2] : && /opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-g++ --sysroot=/home/lucasyuen/sysroot -fPIC -Wl,-rpath-link,/home/lucasyuen/sysroot/lib/arm-linux-gnueabihf -fPIC -Wl,-rpath-link,/home/lucasyuen/sysroot/usr/lib/arm-linux-gnueabihf -L/home/lucasyuen/sysroot/lib -L/home/lucasyuen/sysroot/lib/arm-linux-gnueabihf -L/home/lucasyuen/sysroot/usr/lib/arm-linux-gnueabihf -L/home/lucasyuen/sysroot/usr/lib -I/home/lucasyuen/sysroot/usr/include -I/home/lucasyuen/sysroot/usr/include/arm-linux-gnueabihf -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -Wl,-fuse-ld=gold -ldbus-1 CMakeFiles/cmTC_1591e.dir/testCXXCompiler.cxx.o -o cmTC_1591e && :
FAILED: cmTC_1591e
: && /opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf-g++ --sysroot=/home/lucasyuen/sysroot -fPIC -Wl,-rpath-link,/home/lucasyuen/sysroot/lib/arm-linux-gnueabihf -fPIC -Wl,-rpath-link,/home/lucasyuen/sysroot/usr/lib/arm-linux-gnueabihf -L/home/lucasyuen/sysroot/lib -L/home/lucasyuen/sysroot/lib/arm-linux-gnueabihf -L/home/lucasyuen/sysroot/usr/lib/arm-linux-gnueabihf -L/home/lucasyuen/sysroot/usr/lib -I/home/lucasyuen/sysroot/usr/include -I/home/lucasyuen/sysroot/usr/include/arm-linux-gnueabihf -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -Wl,-fuse-ld=gold -ldbus-1 CMakeFiles/cmTC_1591e.dir/testCXXCompiler.cxx.o -o cmTC_1591e && :
/opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/../lib/gcc/arm-none-linux-gnueabihf/11.3.1/../../../../arm-none-linux-gnueabihf/bin/ld.gold: error: cannot open crt1.o: 没有那个文件或目录
/opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/../lib/gcc/arm-none-linux-gnueabihf/11.3.1/../../../../arm-none-linux-gnueabihf/bin/ld.gold: error: cannot open crti.o: 没有那个文件或目录
/opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/../lib/gcc/arm-none-linux-gnueabihf/11.3.1/../../../../arm-none-linux-gnueabihf/bin/ld.gold: error: cannot open crtn.o: 没有那个文件或目录
/opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/../lib/gcc/arm-none-linux-gnueabihf/11.3.1/../../../../arm-none-linux-gnueabihf/bin/ld.gold: error: cannot open /home/lucasyuen/sysroot/usr/lib/arm-linux-gnueabihf/libm.so: 没有那个文件或目录
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:15 (project)
</font>
我的toolchain.cmake配置如下：
<div class="blockcode"><blockquote># 设置 cmake 支持的最小版本
cmake_minimum_required(VERSION 3.18)
include_guard(GLOBAL)
# 设置目标系统为 Linux 和目标架构为 ARM
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)
# 指定sysroot目录
set(TARGET_SYSROOT /home/lucasyuen/sysroot)
# 指定前面获取的交叉编译器路径
set(CROSS_COMPILER /opt/arm-gnu-toolchain-11.3.rel1-x86_64-arm-none-linux-gnueabihf/bin/arm-none-linux-gnueabihf)
# 编译器和链接器应使用的根文件系统路径
set(CMAKE_SYSROOT ${TARGET_SYSROOT})
# 设置编译器
set(CMAKE_C_COMPILER ${CROSS_COMPILER}-gcc)
set(CMAKE_CXX_COMPILER ${CROSS_COMPILER}-g++)
# 设置体系结构
set(CMAKE_LIBRARY_ARCHITECTURE arm-linux-gnueabihf)
# 设置库路径
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC -Wl,-rpath-link,${CMAKE_SYSROOT}/lib/${CMAKE_LIBRARY_ARCHITECTURE} -fPIC -Wl,-rpath-link,${CMAKE_SYSROOT}/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE} -L${CMAKE_SYSROOT}/lib -L${CMAKE_SYSROOT}/lib/${CMAKE_LIBRARY_ARCHITECTURE} -L${CMAKE_SYSROOT}/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE} -L${CMAKE_SYSROOT}/usr/lib -I${TARGET_SYSROOT}/usr/include -I${TARGET_SYSROOT}/usr/include/${CMAKE_LIBRARY_ARCHITECTURE}")
set(CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS}")
# 设置 pkg-config 环境变量
set(ENV{PKG_CONFIG_PATH} ${TARGET_SYSROOT}/usr/lib/pkgconfig:${TARGET_SYSROOT}/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig:${TARGET_SYSROOT}/usr/share/pkgconfig/)
set(ENV{PKG_CONFIG_LIBDIR} ${TARGET_SYSROOT}/usr/lib/pkgconfig:${TARGET_SYSROOT}/usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig:${TARGET_SYSROOT}/usr/share/pkgconfig/)
set(ENV{PKG_CONFIG_SYSROOT_DIR} ${CMAKE_SYSROOT})
# 设置 Qt 编译和链接选项
set(QT_COMPILER_FLAGS "-march=armv7-a")
set(QT_COMPILER_FLAGS_RELEASE "-O2 -pipe")
set(QT_LINKER_FLAGS "-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -Wl,-fuse-ld=gold -ldbus-1")
# 配置查找路径模式
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
include(CMakeInitializeConfigs)
# 为不同的构建配置（如 DEBUG, RELEASE）初始化编译器和链接器标志
function(cmake_initialize_per_config_variable _PREFIX _DOCSTRING)
if (_PREFIX MATCHES "CMAKE_(C|CXX|ASM)_FLAGS")
set(CMAKE_${CMAKE_MATCH_1}_FLAGS_INIT "${QT_COMPILER_FLAGS}")
foreach (config DEBUG RELEASE MINSIZEREL RELWITHDEBINFO)
if (DEFINED QT_COMPILER_FLAGS_${config})
set(CMAKE_${CMAKE_MATCH_1}_FLAGS_${config}_INIT "${QT_COMPILER_FLAGS_${config}}")
endif()
endforeach()
endif()
if (_PREFIX MATCHES "CMAKE_(SHARED|MODULE|EXE)_LINKER_FLAGS")
foreach (config SHARED MODULE EXE)
set(CMAKE_${config}_LINKER_FLAGS_INIT "${QT_LINKER_FLAGS}")
endforeach()
endif()
_cmake_initialize_per_config_variable(${ARGV})
endfunction()

复制代码

qmake.conf如下：

#

# qmake configuration for the Zynq running Linux for Ubuntu18.04

#

# 通用的预设配置文件

include(../common/linux_device_pre.conf)

# 设置OpenGL和EGL库

QMAKE_LIBS_EGL       += -lEGL -lmali

QMAKE_LIBS_OPENGL_ES2  += -lGLESv2 -lEGL -lmali

# 设置编译选项

QMAKE_CFLAGS          = -march=armv7-a

QMAKE_CXXFLAGS       = $$QMAKE_CFLAGS

# 链接器选项

QMAKE_LFLAGS += -static-libstdc++

# 设置包含目录（Include Directories）

QMAKE_INCDIR_POST +=    $$[QT_SYSROOT]/usr/include    $$[QT_SYSROOT]/usr/include/arm-linux-gnueabihf/

# 设置库目录（Library Directories）

QMAKE_LIBDIR_POST +=    $$[QT_SYSROOT]/usr/lib    $$[QT_SYSROOT]/lib/$${GCC_MACHINE_DUMP}       $$[QT_SYSROOT]/usr/lib/$${GCC_MACHINE_DUMP}

# 设置 RPATH 链接目录（Runtime Library Search Path）

QMAKE_RPATHLINKDIR_POST +=    $$[QT_SYSROOT]/usr/lib    $$[QT_SYSROOT]/usr/lib/$${GCC_MACHINE_DUMP}    $$[QT_SYSROOT]/lib/$${GCC_MACHINE_DUMP}

# 分发选项

DISTRO_OPTS += armv7

DISTRO_OPTS += deb-multi-arch

# 引入后处理配置 ( 通常包含针对 ARM 设备的特定设置（例如库路径、工具链等）)

include(../common/linux_arm_device_post.conf)

# 加载Qt配置

load(qt_config)
复制代码
从上面的报错来看是编译器找不到相关文件，但是我核对了一下，感觉toolchain中设置的库路径没什么问题，而且sysroot中的确能找到。所以不知道该怎么解决这个问题，请教下大佬们。

YiangYiang · 发表于 2024-11-25 10:03:26

https://stackoverflow.com/questi ... -cannot-find-crt1-o
试试这里面的方法？

LucasYuen · 发表于 2024-11-26 17:54:29

YiangYiang 发表于 2024-11-25 10:03
https://stackoverflow.com/questions/6329887/how-to-fix-linker-error-cannot-find-crt1-o
试试这里面的 ...

谢谢，但是这里面的回答不适用我当前的情况

LucasYuen · 发表于 7 天前

还是路径问题，得提供相应的软链接才行。

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[求助] 基于Qt6的交叉编译，C启动文件始终找不到相应的库

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