Rebuild for icu 75

[regro-cf-autotick-bot]

This PR has been triggered in an effort to update icu75.

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[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

[hmaarrfk]

@conda-forge-admin please restart cis
@conda-forge-admin please rerender

[hmaarrfk]

@conda-forge-admin please rerender

[hmaarrfk]

it seems that we need to update to c++17 for windows. any clue on how?

[hmaarrfk]

i'm not sure why it decided to try to build the map stuff with the "static" implemtation.... the main branch does not use the "static" flag.

[traversaro]

@conda-forge-admin please restart ci

[hmaarrfk]

@conda-forge-admin please rerender

[hmaarrfk]

i think OSX can be resolved, but windows you'll have trouble with....

[traversaro]

i think OSX can be resolved, but windows you'll have trouble with....

Before looking into that, I was wondering if it is tricky to fix just on Windows, we could consider disabling icu on Windows? From what understand from:

• https://doc.qt.io/qt-5/windows-requirements.html#icu
• https://codereview.qt-project.org/c/qt/qtbase/+/83197

qt can build without icu, and that is actually the behavior used by default in official binaries on Windows since a long time (some qt dev in the bug tracker as the Qt+Windows+ICU combination as "unusual", see https://bugreports.qt.io/browse/QTBUG-77120?focusedId=470037&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-470037).

Also from the code, the ABI is not affected, see:

• https://github.com/qt/qtbase/blob/ca725ad9c5331a657c328bf624f2b0b713623276/src/corelib/codecs/codecs.pri#L31-L64
• https://github.com/qt/qtbase/blob/ca725ad9c5331a657c328bf624f2b0b713623276/src/corelib/text/text.pri#L63-L74
• https://github.com/qt/qtbase/blob/ca725ad9c5331a657c328bf624f2b0b713623276/src/corelib/time/time.pri#L61-L65

[traversaro]

Anyhow, the actual failing test on Windows seems:

2024-09-13T15:34:01.7770975Z > jom 1.1.3 - empower your cores
2024-09-13T15:34:01.7821878Z > 	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding -Zc:__cplusplus -O2 -MD -W0 -EHsc -DUNICODE -D_UNICODE -DWIN32 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -DWIN64 -DNDEBUG -I. -IC:\bld\qt-main_1726240212609\_h_env\Library\include -IC:\bld\qt-main_1726240212609\work\qtbase\mkspecs\win32-msvc -Fo @C:\Users\VSSADM~1\AppData\Local\Temp\main.obj.6532.0.jom
2024-09-13T15:34:01.7831182Z > main.cpp
2024-09-13T15:34:01.7868772Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): error C3533: a parameter cannot have a type that contains 'auto'
2024-09-13T15:34:01.7880904Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): note: 'auto' in non-type template parameters requires at least '/std:c++17'
2024-09-13T15:34:01.7933243Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/uset.h(358): error C2975: 'closeFunction': invalid template argument for 'icu_75::internal::LocalOpenPointer', expected compile-time constant expression
2024-09-13T15:34:01.7967236Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): note: see declaration of 'closeFunction'
2024-09-13T15:34:01.7973658Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/unorm2.h(286): error C2975: 'closeFunction': invalid template argument for 'icu_75::internal::LocalOpenPointer', expected compile-time constant expression
2024-09-13T15:34:01.8246013Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): note: see declaration of 'closeFunction'
2024-09-13T15:34:01.8253164Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/uenum.h(69): error C2975: 'closeFunction': invalid template argument for 'icu_75::internal::LocalOpenPointer', expected compile-time constant expression
2024-09-13T15:34:01.8272513Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): note: see declaration of 'closeFunction'
2024-09-13T15:34:01.8283753Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/ucol.h(553): error C2975: 'closeFunction': invalid template argument for 'icu_75::internal::LocalOpenPointer', expected compile-time constant expression
2024-09-13T15:34:01.8286270Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): note: see declaration of 'closeFunction'
2024-09-13T15:34:01.8288413Z > jom: C:\bld\qt-main_1726240212609\work\b\config.tests\icu\Makefile [main.obj] Error 2

[hmaarrfk]

disabling ICU might indeed be a way out....

[traversaro]

Anyhow, the actual failing test on Windows seems:

2024-09-13T15:34:01.7770975Z > jom 1.1.3 - empower your cores
2024-09-13T15:34:01.7821878Z > 	cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding -Zc:__cplusplus -O2 -MD -W0 -EHsc -DUNICODE -D_UNICODE -DWIN32 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -DWIN64 -DNDEBUG -I. -IC:\bld\qt-main_1726240212609\_h_env\Library\include -IC:\bld\qt-main_1726240212609\work\qtbase\mkspecs\win32-msvc -Fo @C:\Users\VSSADM~1\AppData\Local\Temp\main.obj.6532.0.jom
2024-09-13T15:34:01.7831182Z > main.cpp
2024-09-13T15:34:01.7868772Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): error C3533: a parameter cannot have a type that contains 'auto'
2024-09-13T15:34:01.7880904Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): note: 'auto' in non-type template parameters requires at least '/std:c++17'
2024-09-13T15:34:01.7933243Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/uset.h(358): error C2975: 'closeFunction': invalid template argument for 'icu_75::internal::LocalOpenPointer', expected compile-time constant expression
2024-09-13T15:34:01.7967236Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): note: see declaration of 'closeFunction'
2024-09-13T15:34:01.7973658Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/unorm2.h(286): error C2975: 'closeFunction': invalid template argument for 'icu_75::internal::LocalOpenPointer', expected compile-time constant expression
2024-09-13T15:34:01.8246013Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): note: see declaration of 'closeFunction'
2024-09-13T15:34:01.8253164Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/uenum.h(69): error C2975: 'closeFunction': invalid template argument for 'icu_75::internal::LocalOpenPointer', expected compile-time constant expression
2024-09-13T15:34:01.8272513Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): note: see declaration of 'closeFunction'
2024-09-13T15:34:01.8283753Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/ucol.h(553): error C2975: 'closeFunction': invalid template argument for 'icu_75::internal::LocalOpenPointer', expected compile-time constant expression
2024-09-13T15:34:01.8286270Z > C:\bld\qt-main_1726240212609\_h_env\Library\include\unicode/localpointer.h(561): note: see declaration of 'closeFunction'
2024-09-13T15:34:01.8288413Z > jom: C:\bld\qt-main_1726240212609\work\b\config.tests\icu\Makefile [main.obj] Error 2

Ok, I think I understood the nature of the error here. qmake is testing for existince of icu by compiling a code snippet, but for some reason the code snippet is compiled with C++11 (not supported by icu 75), while the rest of the build actually compiles with c++17. Probably the most logical change is to tell qmake to compile the snippet with c++17, but as qt actually just uses the C api of icu, we can just disable the C++ api in icu by defining the U_SHOW_CPLUSPLUS_API macro to 0, I did this in https://github.com/conda-forge/qt-main-feedstock/blob/75ae665ce2cdf6b2f63c89eda23ccdc0c0c2cc01/recipe/patches/0019-do-not-use-cxx-icu-api-in-tests.patch and the Windows CI is not blocking anymore.

[traversaro]

Probably the most logical change is to tell qmake to compile the snippet with c++17

This traversaro/qtbase@b022f7b should done exactly test, but I still did not test it.