Compiling Qt 6.41 with oneAPI 2023.0

[Rich_F_1]

Trying to compile Qt 6.4.1 with latest version oneAPI 2023.0

Was able to compile it with 2022.2.1 after changing the win32-icc qmake.conf QMAKE_CC = icx
and applying the patch referenced by https://bugreports.qt.io/browse/QTBUG-109015

Here is the configuration that worked with 2022.2.1

c:\QT\qt-everywhere-src-6.4.1\configure.bat -prefix c:\QT\Qt6.4.1_20 -debug -platform win32-icc -nomake examples -cmake-generator Ninja -c++std c++20 --disable-pch "MySQL_LIBRARY=c:/qt/mysql-8.0.28-winx64/lib/libmysql.lib" "MySQL_INCLUDE_DIR=c:/qt/mysql-8.0.28-winx64/include/"

With oneAPI 2023.0 icpx.exe now exists in the windows\bin so the configure.bat attempts to use it

Wondering if anyone else is having the same problem.

Rich

Here is the configure error I'm seeing

c:\Qt\Qt6.4.1_20>c:\QT\qt-everywhere-src-6.4.1\configure.bat -prefix c:\QT\Qt6.4.1_20 -debug -platform win32-icc -nomake examples -cmake-generator Ninja -c++std c++20 --disable-pch "MySQL_LIBRARY=c:/qt/mysql-8.0.28-winx64/lib/libmysql.lib" "MySQL_INCLUDE_DIR=c:/qt/mysql-8.0.28-winx64/include/"
c:\QT\qt-everywhere-src-6.4.1\configure.bat -prefix c:\QT\Qt6.4.1_20 -debug -platform win32-icc -nomake examples -cmake-generator Ninja -c++std c++20 --disable-pch "MySQL_LIBRARY=c:/qt/mysql-8.0.28-winx64/lib/libmysql.lib" "MySQL_INCLUDE_DIR=c:/qt/mysql-8.0.28-winx64/include/"
+ cd qtbase
+ c:\Qt\qt-everywhere-src-6.4.1\qtbase\configure.bat -top-level -prefix c:\QT\Qt6.4.1_20 -debug -platform win32-icc -nomake examples -cmake-generator Ninja -c++std c++20 --disable-pch "MySQL_LIBRARY=c:/qt/mysql-8.0.28-winx64/lib/libmysql.lib" "MySQL_INCLUDE_DIR=c:/qt/mysql-8.0.28-winx64/include/"
-- Windows 10 SDK version: 10.0.22000.0
'C:/Program Files/CMake/bin/cmake.exe' '-DBUILD_WITH_PCH=OFF' '-DCMAKE_INSTALL_PREFIX=c:/QT/Qt6.4.1_20' '-DQT_QMAKE_TARGET_MKSPEC=win32-icc' '-DQT_BUILD_EXAMPLES=FALSE' '-DCMAKE_BUILD_TYPE=Debug' '-DINPUT_cxx14=yes' '-DINPUT_cxx17=yes' '-DINPUT_cxx20=yes' '-G' 'Ninja' '-DMySQL_LIBRARY=c:/qt/mysql-8.0.28-winx64/lib/libmysql.lib' '-DMySQL_INCLUDE_DIR=c:/qt/mysql-8.0.28-winx64/include/' 'C:/Qt/qt-everywhere-src-6.4.1'
-- The CXX compiler identification is IntelLLVM 2023.0.0 with GNU-like command-line
-- The C compiler identification is IntelLLVM 2023.0.0 with MSVC-like command-line
-- The ASM compiler identification is IntelLLVM
-- Found assembler: C:/Program Files (x86)/Intel/oneAPI/compiler/latest/windows/bin/icx.exe
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - failed
-- Check for working CXX compiler: C:/Program Files (x86)/Intel/oneAPI/compiler/latest/windows/bin/icpx.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Intel/oneAPI/compiler/latest/windows/bin/icpx.exe - broken
CMake Error at C:/Program Files/CMake/share/cmake-3.22/Modules/CMakeTestCXXCompiler.cmake:62 (message):
The C++ compiler

"C:/Program Files (x86)/Intel/oneAPI/compiler/latest/windows/bin/icpx.exe"

is not able to compile a simple test program.

It fails with the following output:

Change Dir: C:/Qt/Qt6.4.1_20/CMakeFiles/CMakeTmp

Run Build Command(s):C:/PROGRA~1/CMake/bin/ninja.exe cmTC_494ab && [1/2] Building CXX object CMakeFiles\cmTC_494ab.dir\testCXXCompiler.cxx.obj
FAILED: CMakeFiles/cmTC_494ab.dir/testCXXCompiler.cxx.obj
C:\PROGRA~2\Intel\oneAPI\compiler\latest\windows\bin\icpx.exe /nologo /TP /DWIN32 /D_WINDOWS /EHsc /Zi /Ob0 /Od /RTC1 -MDd -QMD -QMT CMakeFiles\cmTC_494ab.dir\testCXXCompiler.cxx.obj -QMF CMakeFiles\cmTC_494ab.dir\testCXXCompiler.cxx.obj.d /FoCMakeFiles\cmTC_494ab.dir\testCXXCompiler.cxx.obj /FdCMakeFiles\cmTC_494ab.dir\ -c C:\Qt\Qt6.4.1_20\CMakeFiles\CMakeTmp\testCXXCompiler.cxx
icpx: error: unknown argument: '-nologo'
icpx: error: unknown argument: '-EHsc'
icpx: error: unknown argument: '-Zi'
icpx: error: unknown argument: '-MDd'
icpx: error: unknown argument: '-QMD'
icpx: error: unknown argument: '-QMT'
icpx: error: unknown argument: '-QMF'
icpx: error: no such file or directory: 'CMakeFiles\cmTC_494ab.dir\testCXXCompiler.cxx.obj'
icpx: error: no such file or directory: 'CMakeFiles\cmTC_494ab.dir\testCXXCompiler.cxx.obj.d'
ninja: build stopped: subcommand failed.

CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:17 (project)

-- Configuring incomplete, errors occurred!
See also "C:/Qt/Qt6.4.1_20/CMakeFiles/CMakeOutput.log".
See also "C:/Qt/Qt6.4.1_20/CMakeFiles/CMakeError.log".
CMake Error at C:/Qt/qt-everywhere-src-6.4.1/qtbase/cmake/QtProcessConfigureArgs.cmake:965 (message):
CMake exited with code 1.

c:\Qt\Qt6.4.1_20>

[VarshaS_Intel]

Hi,

Thanks for posting in Intel Communities.

Could you please try using the icx compiler and let us know if you are facing any errors? (please provide us with the error log)

Please try using the icx compiler on windows as icx is the recommended default driver for Windows.

At our end, when we try to extract the files from the latest qt(6.4.1)(https://www.qt.io/offline-installers), we are unable to extract it.

Could you please let us know from where you have downloaded the qt and the steps to build it?

Thanks & Regards,
Varsha

[Rich_F_1]

Hello

I repeated the icpx command using icx and didn't get the unknown command line options errors but since it is part of the configuration script the temporary files were not available.

The Qt cmake configuration script sees the icpx.exe file and attempts to test it. It is ignoring the setting in the qtbase mkspecs win32-icc qmake.conf file where I changed QMAKE_CC = icx. It should use icx because 
QMAKE_CXX = $$QMAKE_CC

So it is something in the cmake scripts that I haven't tracked down yet. I didn't expect icpx to fail on the basic documented command line options.

Will file a Qt bug report if you do not. Wanted to check here first so I can let Thiago Macieira know it has been addressed here.

The source files come from the same place you got them (https://www.qt.io/offline-installers),  There is a problem extracting them because the file path was too long.

Extracting it to c:\tmp\ then moving it got around that problem.

See my previous question. Solved: error compiling Qt 6.3.0 on Windows with oneAPI icx using c++20 - Intel Communities

Other tricks I've used in the past to get around zip file extraction problems are 

1 Extracting on a Linux box and mounting the drive and copying the files.

2 using tar eg tar.exe -xf archive zip

Windows 10 build 17063 or later is bundled with tar.exe which is capable of working with ZIP files from the command line.

see https://superuser.com/questions/110991/can-you-zip-a-file-from-the-command-prompt-using-only-windows-built-in-capabili

[Rich_F_1]

icpx is set in the cmake module CMakeDetermineCXXCompiler.cmake

# finally list compilers to try
if(NOT CMAKE_CXX_COMPILER_INIT)
set(CMAKE_CXX_COMPILER_LIST CC ${_CMAKE_TOOLCHAIN_PREFIX}c++ ${_CMAKE_TOOLCHAIN_PREFIX}g++ aCC cl bcc xlC icpx icx clang++)
endif()

Removing icpx from the list allows the Qt configuration to proceed with latest version oneAPI 2023.0.

Not the best solution.

need a cmake guru to figure out the correct way to either disable icpx or force icx for the CXX compiler on windows.

[VarshaS_Intel]

Hi,

Thanks for the information.

>>Removing icpx from the list allows the Qt configuration to proceed with latest version oneAPI 2023.0.

Yes, since icpx is only supported on Linux(not for windows). Please find the below link:

https://www.intel.com/content/www/us/en/develop/documentation/oneapi-dpcpp-cpp-compiler-dev-guide-and-reference/top/compiler-setup/use-the-command-line/invoke-the-compiler.html

Could you please let us know if you are facing any issues with building Qt with the Intel icx compiler? Since it is related to Qt compatibility not an error with the Intel compiler, could you please raise a ticket in the Qt forum?

Thanks & Regards,

Varsha

[Rich_F_1]

Qt 6.4.1 compiles and works using just 2023.0 icx.

If icpx is not the recommended compiler for Windows why is it included in the 2023.0 release for Windows?

Here is the Qt bug report.

[QTBUG-109793] configuration fails for oneAPI 2023.0 - Qt Bug Tracker

[Rich_F_1]

Qt asked to try without -platform win32-icc in configure. The compiler identification still tries to test icpx.exe as the CXX compiler and fails. see the new CMake logs added to Qt bug report.

[VarshaS_Intel]

Hi,

Thanks for the detailed information.

"icpx" is a GNU-style driver for Windows. As such it does not support CL-compatible options as well as the CL-style option format. 

>>either disable icpx or force icx for the CXX compiler on windows.

Since it is a script in the QT file and icx is supported(and also it is working) it is not the issue with Intel Compilers.

Thanks & Regards,

Varsha

[VarshaS_Intel]

Hi,

We have not heard back from you. Could you please let us know if you have any other queries?

Thanks & Regards,

Varsha

[VarshaS_Intel]

Hi,

We have not heard back from you. This thread will no longer be monitored by Intel. If you need additional information, please start a new thread.

Thanks & Regards,

Varsha