[提问]qt6.7源码无法交叉编译到arm平台，指定-xplatform linux-aarch64-gnu-g++无效 [复制链接]

中控版arm的，带的socketcan，基于lubuntu系统，系统的qt库是qt5.12.8的，所以qt5编译的新版库有冲突，造成系统奔溃，用5.12.8源码编译的没问题，但是这个sockecan 居然找不到插件，用qt6.7在线安装测试则正常，所以应该修复了，但是中控开发qt不方便，还是要x86_64下虚拟机交叉编译才好用

用 ./configure  -xplatform linux-aarch64-gnu-g++ -prefix  /xxx/armqt67 -opensource -confirm-license -release -shared -optimized-qmake  -qt-libjpeg -qt-libpng -qt-zlib -nomake examples -nomake tests  -no-opengl   -c++std c++20 -make libs -widgets  -dbus-runtime -qt-zlib -qt-freetype -qt-harfbuzz -strip  -skip qtgraphs -skip qtwebengine -skip qt3d -skip qtquick3d  -skip qtdoc -skip qtquick3dphysics -skip qtopcua

能完成源码编译，但是交叉编译生成的lib库全部是x86_64的，怀疑cmake没用指定的编译器，用命令指定，这个cmake build就一大堆莫名其妙的错误，头疼  cmake -DCMAKE_C_COMPILER=/lxxx/arm-gnu-toolchain-13.3.rel1-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-gcc -DCMAKE_CXX_COMPILER=/XXX/arm-gnu-toolchain-13.3.rel1-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-g++ -B build -S .

大家有没有遇到过这类问题，交叉编译指令感觉没有正常执行

生成的qt6.7库 为x86_64 libQt6WlShellIntegration.prl:                    ASCII text
libQt6WlShellIntegration.so:                     symbolic link to libQt6WlShellIntegration.so.6
libQt6WlShellIntegration.so.6:                   symbolic link to libQt6WlShellIntegration.so.6.7.2
libQt6WlShellIntegration.so.6.7.2:               ELF 64-bit LSB shared object, x86-64, version 1 (GNU/Linux), dynamically linked, BuildID[sha1]=8f72af03fdfebbdb848f41c939d3e19898d12c4f, not stripped
libQt6XcbQpa.prl:                                ASCII text, with very long lines
libQt6XcbQpa.so:                                 symbolic link to libQt6XcbQpa.so.6
libQt6XcbQpa.so.6:                               symbolic link to libQt6XcbQpa.so.6.7.2
libQt6XcbQpa.so.6.7.2:                           ELF 64-bit LSB shared object, x86-64, version 1 (GNU/Linux), dynamically linked, BuildID[sha1]=00a8abe911a532a331438e4570b3c8aad96e92fd, not stripped


正常make编译的qt5为 arm：

libQt5WebView.so.5.12.8:           ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), dynamically linked, BuildID[sha1]=94a56e1257cb7e4e8439bc9f6cd3615aec277c57, stripped
libQt5Widgets.la:                  libtool library file, ASCII text
libQt5Widgets.prl:                 ASCII text, with very long lines
libQt5Widgets.so:                  symbolic link to libQt5Widgets.so.5.12.8
libQt5Widgets.so.5:                symbolic link to libQt5Widgets.so.5.12.8
libQt5Widgets.so.5.12:             symbolic link to libQt5Widgets.so.5.12.8
libQt5Widgets.so.5.12.8:           ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), dynami

终于搞出来了，qt6.7编译真是麻烦，编译好后，qt5写的很多东西都不支持，于是重新下载qtseriabus的库编译，交叉编译用的qt5.12.8, 编译器最新aarch13,(建议不要用最新的，否则arm这边系统会报缺少GLIBCXX_3.4.29，这玩意和系统核心，一个更新不好，你的arm linux就会奔溃，我使用source.list添加高版本，在同个apt install libstdc++.so.6 自动更新完成，手动复制黏贴库，有可能系统奔溃，任何linux命令无法使用） 编译成功后复制到arm里面，发现还是不行，于是相qt67下为什么是正常，于是file ,ldd 等文件相关链接库，发现一个可疑文件夹qt5 ,于是尝试把编译的库放入 /lib/aarch64-linux-gnu/qt5/plugins ，终于出现x86_64下的 ：
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
arm_release_ver of this libmali is 'g2p0-01eac0', rk_so_ver is '4'.
"passthrucan"
"peakcan"
"socketcan"
"tinycan"
"virtualcan"
Available CAN plugins: ("passthrucan", "peakcan", "socketcan", "tinycan", "virtualcan")