[Interest] Qt 5.13 QtWebEngine GN Error

[Oliver Niebuhr]

On 23/04/2019 21:20, Oliver Niebuhr wrote:
> 
> 
> On 23/04/2019 20:56, Allan Sandfeld Jensen wrote:
>> On Dienstag, 23. April 2019 19:45:14 CEST Oliver Niebuhr wrote:
>>> Hi.
>>>
>>> I am constantly running into the following Error:
>>>
>>> Project MESSAGE:
>>> C:\qt5srcgit\qt5\qtwebengine\src\3rdparty\gn\build\gen.py
>>> --no-last-commit-position --out-path
>>> C:/QtSrcx64/qtwebengine/src/3rdparty/gn/out/Release --cc "C:\Program
>>> Files (x86)\Microsoft Visual
>>> Studio\2019\Community\VC\Tools\MSVC\14.20.27508\bin\Hostx64\x64\cl.exe"
>>> --cxx "C:\Program Files (x86)\Microsoft Visual
>>> Studio\2019\Community\VC\Tools\MSVC\14.20.27508\bin\Hostx64\x64\cl.exe"
>>> --ld "C:\Program Files (x86)\Microsoft Visual
>>> Studio\2019\Community\VC\Tools\MSVC\14.20.27508\bin\Hostx64\x64\link.exe"
>>> [1/11] CXX tools/gn/xml_element_writer.obj
>>> [2/11] CXX util/sys_info.obj
>>> [3/11] CXX util/semaphore.obj
>>> [4/11] CXX util/ticks.obj
>>> [5/11] CXX util/msg_loop.obj
>>> [6/11] CXX util/exe_path.obj
>>> [7/11] CXX util/worker_pool.obj
>>> [8/11] CXX tools/gn/substitution_writer.obj
>>> FAILED: tools/gn/substitution_writer.obj
>>> ninja -t msvc -- C:\Program Files (x86)\Microsoft Visual
>>> Studio\2019\Community\VC\Tools\MSVC\14.20.27508\bin\Hostx64\x64\cl.exe
>>> /nologo /showIncludes /FC @tools/gn/substitution_writer.obj.rsp /c
>>> C:\qt5srcgit\qt5\qtwebengine\src\3rdparty\gn\tools/gn/substitution_writer.cc
>>> /Fotools/gn/substitution_writer.obj
>>> C:\qt5srcgit\qt5\qtwebengine\src\3rdparty\gn\tools\gn\substitution_writer.h(
>>> 91): error C2039: 'string': is not a member of 'std'
>>> C:\Program Files (x86)\Microsoft Visual
>>> Studio\2019\Community\VC\Tools\MSVC\14.20.27508\include\vector(19):
>>> note: see declaration of 'std'
>>> C:\qt5srcgit\qt5\qtwebengine\src\3rdparty\gn\tools\gn\substitution_writer.h(
>>> 91): error C3646: 'ApplyPatternToSourceAsString': unknown override specifier
>>> C:\qt5srcgit\qt5\qtwebengine\src\3rdparty\gn\tools\gn\substitution_writer.h
>>> (92): error C2059: syntax error: 'const'
>>> C:\qt5srcgit\qt5\qtwebengine\src\3rdparty\gn\tools\gn\substitution_writer.h(
>>> 95): error C2238: unexpected token(s) preceding ';'
>>> C:\qt5srcgit\qt5\qtwebengine\src\3rdparty\gn\tools\gn\substitution_writer.h(
>>> 117): error C2039: 'string': is not a member of 'std'
>>> C:\Program Files (x86)\Microsoft Visual
>>> Studio\2019\Community\VC\Tools\MSVC\14.20.27508\include\vector(19):
>>> note: see declaration of 'std'
>>> C:\qt5srcgit\qt5\qtwebengine\src\3rdparty\gn\tools\gn\substitution_writer.h(
>>> 117): error C2065: 'string': undeclared identifier
>>> C:\qt5srcgit\qt5\qtwebengine\src\3rdparty\gn\tools\gn\substitution_writer.h(
>>> 117): error C2923: 'std::vector': 'string' is not a valid template type
>>> argument for parameter '_Ty'
>>> C:\qt5srcgit\qt5\qtwebengine\src\3rdparty\gn\tools\gn\substitution_writer.h(
>>> 117): error C3203: 'allocator': unspecialized class template can't be used
>>> as a template argument for template parameter '_Alloc', expected a real
>>> type
>>> C:\qt5srcgit\qt5\qtwebengine\src\3rdparty\gn\tools\gn\substitution_writer.h
>>> (137): error C2039: 'string': is not a member of 'std'
>>> [...shortened here...]
>>>
>>> I am not sure if this is a already known Issue or if the Chromium
>>> Version coming with Qt 5.13 is not compatible with VS 2019?
>>>
>> None of Qt WebEngine versions are compatible with VS 2019. If you had managed 
>> to build GN you would have run into our hardcoded check that you are using a 
>> known compatible compiler. 
>>
>> You need the following changes that have gone to 5.12 first:
>>
>> https://codereview.qt-project.org/259283
>> https://codereview.qt-project.org/259285/
>>
>> "Fortunately" most of the changes in VS 2019 were introduced gradually in VS 
>> 2017, so it was only a single very minor change.
>>
>> 'Allan
>>
>>
> Thanks! Thats good to know. I will manually apply them and see what will
> happen :)
> Olli
> 
> 
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> 
The Patches let me compile QtWebEngine. But it fails very late with:

"../../../../../qt5srcgit/qt5/qtwebengine/src/3rdparty/chromium\gpu/command_buffer/service/memory_tracking.h(59):
warning C4146: unary minus operator applied to unsigned type, result
still unsigned
ninja: build stopped: subcommand failed.
jom: C:\QtSrcx64\qtwebengine\src\core\Makefile.gn_run.Release
[run_ninja] Error 1
jom: C:\QtSrcx64\qtwebengine\src\core\Makefile.gn_run [release] Error 2
jom: C:\QtSrcx64\qtwebengine\src\core\Makefile
[sub-gn_run-pro-make_first] Error 2
jom: C:\QtSrcx64\qtwebengine\src\Makefile [sub-core-make_first] Error 2
jom: C:\QtSrcx64\qtwebengine\Makefile [sub-src-make_first] Error 2
jom: C:\QtSrcx64\Makefile [module-qtwebengine-make_first] Error 2"

I guess a Bug Report does not make much sense this late in the 5.13
Development State but wait for a newer QtWebEngine/Chromium Version when
the DEV Branch gets updated for 5.14!?
Olli

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