Cross compiling QT for raspberry pi - AT_FDCWD was not declared in this scope
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Hello. I wanted to cross-compile qt for my raspberrypi. I've made working cross-compiler using this article : https://solarianprogrammer.com/2018/05/06/building-gcc-cross-compiler-raspberry-pi/
Those are the options used to configure gcc :
arm-linux-gnueabihf-g++ -v Using built-in specs. COLLECT_GCC=arm-linux-gnueabihf-g++ COLLECT_LTO_WRAPPER=/opt/cross/libexec/gcc/arm-linux-gnueabihf/10.1.0/lto-wrapper Target: arm-linux-gnueabihf Configured with: ../gcc-10.1.0/configure --prefix=/opt/cross --target=arm-linux-gnueabihf --enable-languages=c,c++,fortran --with-arch=armv6 --with-fpu=vfp --with-float=hard --disable-multilib Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 10.1.0 (GCC)Here's include list:
\home\blazej> echo | arm-linux-gnueabihf-g++ -E -Wp,-v - ignoring nonexistent directory "/opt/cross/lib/gcc/arm-linux-gnueabihf/10.1.0/../../../../arm-linux-gnueabihf/sys-include" #include "..." search starts here: #include <...> search starts here: /opt/cross/lib/gcc/arm-linux-gnueabihf/10.1.0/include /opt/cross/lib/gcc/arm-linux-gnueabihf/10.1.0/include-fixed /opt/cross/lib/gcc/arm-linux-gnueabihf/10.1.0/../../../../arm-linux-gnueabihf/include End of search list. # 1 "<stdin>" # 1 "<built-in>" # 1 "<command-line>" # 31 "<command-line>" # 1 "/opt/cross/arm-linux-gnueabihf/include/stdc-predef.h" 1 3 # 32 "<command-line>" 2 # 1 "<stdin>"When i try to compile qt using this configure script:
./configure -release -opengl es2 -device linux-rasp-pi3-g++ -device-option CROSS_COMPILE=arm-linux-gnueabihf- -sysroot /mnt/linux_hdd/sysroot -opensource -confirm-license -skip qtserialbus -skip qtscxml -skip qtscript -skip qtcharts -skip qt3d -skip qtdatavis3d -skip qtcanvas3d -skip qtgamepad -skip qtvirtualkeyboard -skip qtwayland -skip qtwebengine -skip qtwebchannel -skip qtwebglplugin -skip qtwebsockets -make libs -prefix /usr/local/qt5pi -extprefix /mnt/linux_hdd/qt_rasp/qt5pi -hostprefix /mnt/linux_hdd/qt_rasp/qt5 -no-use-gold-linker -v -no-gbmThis error occurs:
io/qfilesystemengine_unix.cpp: In function ‘int qt_statx(const char*, statx*)’: io/qfilesystemengine_unix.cpp:321:26: error: ‘AT_FDCWD’ was not declared in this scope 321 | return qt_real_statx(AT_FDCWD, pathname, 0, statxBuffer); | ^~~~~~~~ io/qfilesystemengine_unix.cpp: In function ‘int qt_lstatx(const char*, statx*)’: io/qfilesystemengine_unix.cpp:326:26: error: ‘AT_FDCWD’ was not declared in this scope 326 | return qt_real_statx(AT_FDCWD, pathname, AT_SYMLINK_NOFOLLOW, statxBuffer); | ^~~~~~~~ io/qfilesystemengine_unix.cpp:326:46: error: ‘AT_SYMLINK_NOFOLLOW’ was not declared in this scope 326 | return qt_real_statx(AT_FDCWD, pathname, AT_SYMLINK_NOFOLLOW, statxBuffer); | ^~~~~~~~~~~~~~~~~~~ io/qfilesystemengine_unix.cpp: In function ‘int qt_fstatx(int, statx*)’: io/qfilesystemengine_unix.cpp:331:34: error: ‘AT_EMPTY_PATH’ was not declared in this scope 331 | return qt_real_statx(fd, "", AT_EMPTY_PATH, statxBuffer); | ^~~~~~~~~~~~~ io/qfilesystemengine_unix.cpp: In static member function ‘static bool QFileSystemEngine::renameFile(const QFileSystemEntry&, const QFileSystemEntry&, QSystemError&)’: io/qfilesystemengine_unix.cpp:1447:19: error: ‘AT_FDCWD’ was not declared in this scope 1447 | if (renameat2(AT_FDCWD, srcPath, AT_FDCWD, tgtPath, RENAME_NOREPLACE) == 0) | ^~~~~~~~I've read AT_ macros are defined in fcntl.h, and when i try to compile a simple program that uses those macros it works without any problems.
My sysroot dir contains /lib /usr/lib /usr/include and /opt/vc/ from my rpi.
I've found this thread on QT forums:
https://forum.qt.io/topic/97290/cross-compiling-on-ubuntu-to-rpi-b-raspbian-stretchbut I dont understand the solution posted there - I've tried changing my configure script accordingly and unfortunately it failed with same error.
I'd be very thankful for any help.