Am 10.02.2022 um 05:06 schrieb Thiago Macieira:
On Wednesday, 9 February 2022 16:35:00 PST Björn Schäpers wrote:
Hi,
I'm upgrading my build environment and switched my MinGW GCC from MSVCRT to
UCRT. I'm not very far in compiling Qt, but get the following warnings:
qdatetime.cpp:2372:35: warning: 'tzname' is deprecated: Only provided for
source compatibility; this variable might not always be accurate when
linking to UCRT. [-Wdeprecated-declarations]
return QString::fromLocal8Bit(tzname[isDst]);
It seems to me that we should use the #if defined(Q_CC_MSVC) path.
Yes.
What would be the best way for that? I don't think you want a #if
defined(Q_CC_MSVC) || defined(_UCRT), or do you?
No, an #ifdef _UCRT should suffice.
I'm not sure I understood correctly. Should there only be an #ifdef _UCRT? Does
MSVC also define that? I couldn't find anything that suggests that.
There'll be a lot of those places to fix because we haven't paid attention to
the CRT until now. Moreover, there wasn't an UCRT until VS 2015, but many of
the functions in question (including _get_tzname) have been available since VS
2008 or earlier.
Are there any plans to adapt to UCRT MinGW?
Once it's officially supported by upstream, with default toolchain builds, we
should switch.
What is upstream in this case? As far as I can see in msys2 they're heavy
working on getting everything (64 bit) to UCRT.
_______________________________________________
Development mailing list
Development@qt-project.org
https://lists.qt-project.org/listinfo/development