Details
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Suggestion
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Resolution: Out of scope
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Not Evaluated
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None
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5.9.1
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* Windows 10 x64,
* IPSXE 2017 Update 4,
* MSVC 2015 Update 3,
* Windows SDK 10.0.14393.33.
Description
Hello everyone,
While testing Qt build using ICC with -cppstd cpp14 key got error:
Checking for C++14 support... + cd /d C:\libQT-5.9.1\build\config.tests\common\c++14 && C:\libQT-5.9.1\build\qtbase\bin\qmake.exe "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared console single_arch" "QMAKE_LIBDIR += c:\\libQT-5.9.1\\build\\..\\..\\libICU-59.1\\ICC64RH\\lib" "INCLUDEPATH += c:\\libQT-5.9.1\\build\\..\\..\\libICU-59.1\\ICC64RH\\include" C:/libQT-5.9.1/build/qtbase/config.tests/common/c++14 + cd /d C:\libQT-5.9.1\build\config.tests\common\c++14 && set MAKEFLAGS=& jom > jom 1.1.2 - empower your cores > icl -c -nologo -Zm200 /Qprec /Qwd1744,1738,809,3373 /Zc:forScope -O2 -MD -W3 /Qwd673 -EHsc -DUNICODE -DWIN32 -DWIN64 -DNDEBUG -IC:\libQT-5.9.1\build\qtbase\config.tests\common\c++14 -I. -IC:\libICU-59.1\ICC64RH\include -IC:\libQT-5.9.1\build\qtbase\mkspecs\win32-icc -Fo @C:\Users\test\AppData\Local\Temp\c++14.obj.3460.16.jom > c++14.cpp > C:\libQT-5.9.1\build\qtbase\config.tests\common\c++14\c++14.cpp(43): catastrophic error: #error directive: "__cplusplus must be > 201103L (the value of C++11)" > # error "__cplusplus must be > 201103L (the value of C++11)" > ^ > compilation aborted for C:\libQT-5.9.1\build\qtbase\config.tests\common\c++14\c++14.cpp (code 4) > jom: C:\libQT-5.9.1\build\config.tests\common\c++14\Makefile [c++14.obj] Error 4 test config.qtbase.tests.c++14 FAILED <snip> ERROR: Feature 'c++14' was enabled, but the pre-condition 'features.c++11 && tests.c++14' failed.
which relate to ICC and already reported on ICC Forums.
After commenting # error... condition in file qtbase/config.tests/common/cpp14/cpp14.cpp , test passed, but compiler didn't receive -Qstd=cpp14 key during Qt build.
After uncommenting QMAKE_CXXFLAGS_CXX14 variable definition in file qtbase/mkspecs/win32-icc/qmake.conf , build of all Qt modules and examples using ICC with -cppstd cpp14 key finished successfully. Similar to mingw-w64.
Taking into account the above, it could make sense to uncomment mentioned QMAKE_CXXFLAGS_CXX14 variable in recent Qt sources.
Alexander
Attachments
| For Gerrit Dashboard: QTBUG-62211 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 224685,2 | enable C++14/C++17 for builds using MSVC and ICC | dev | qt/qtbase | Status: ABANDONED | 0 | 0 |