Compile Problems After Updating to Qt6

Kornel Benko kornel at lyx.org
Thu Mar 11 16:29:20 UTC 2021


Am Thu, 11 Mar 2021 16:05:24 +0100
schrieb Christoph Schmitz <chr.schmitz at web.de>:

> This is a duplicate of a question already asked in the user forum. Riki recommended to
> post it in the developer forum.
> 
> --
> 
> Operating system: macOS 11.3 Beta (20E5196f)
> 
> I have been struggling with this problem for a few days now. Last week my homebrew
> installation quietly updated Qt to v6 (brew upgrade). Since then I can't compile LyX
> anymore. Unfortunately I learned about the "brew pin" command too late.
> 
> When running .\configure I get the error message: "configure: error: cannot compile a
> simple Qt executable. Check you have the right $QTDIR."
> 
> I tried to set $QTDIR to the following directories:
> 
> /usr/local/Cellar/qt
> /usr/local/Cellar/qt/6.0.2
> /usr/local/Cellar/qt/6.0.2/bin
> /usr/local/Cellar/qt/6.0.2/lib
> /usr/local/opt/qt
> /usr/local/opt/qt6
> /usr/local/opt/qt at 6
> 
> I also tried to downgrade to Qt5, but this also did not solve the problem. I have
> noticed that Qt5 is not installed in the folder "qt" anymore (this is now the place,
> where Qt6 is installed), but in a folder with the name "qt at 5".
> 
> I also deleted my local repository and started from scratch. Also no success.
> 
> I appreciate any recommendation what to do.
> 
> Chris

Trying to adapt cmake to qt6, I get compile errors

usr2/src/lyx/lyx-git/src/insets/InsetInfo.cpp: In member function
‘std::__debug::vector<std::pair<std::__cxx11::basic_string<char>,
std::__cxx11::basic_string<wchar_t> > > lyx::InsetInfoParams::getArguments(const
lyx::Buffer*, const string&)
const’: /usr2/src/lyx/lyx-git/src/insets/InsetInfo.cpp:300:22: error: ‘fromTime_t’ is not
a member of ‘QDateTime’ date =
QDateTime::fromTime_t(buf->fileName().lastModified()).date();
^~~~~~~~~~ /usr2/src/lyx/lyx-git/src/insets/InsetInfo.cpp:326:22: error: ‘fromTime_t’ is
not a member of ‘QDateTime’ time =
QDateTime::fromTime_t(buf->fileName().lastModified()).time();
^~~~~~~~~~ /usr2/src/lyx/lyx-git/src/insets/InsetInfo.cpp: In member function ‘virtual
void lyx::InsetInfo::updateBuffer(const lyx::ParIterator&, lyx::UpdateType,
bool)’: /usr2/src/lyx/lyx-git/src/insets/InsetInfo.cpp:1152:22: error: ‘fromTime_t’ is
not a member of ‘QDateTime’ date =
QDateTime::fromTime_t(buffer().fileName().lastModified()).date();
^~~~~~~~~~ /usr2/src/lyx/lyx-git/src/insets/InsetInfo.cpp:1169:22: error: ‘fromTime_t’ is
not a member of ‘QDateTime’ time =
QDateTime::fromTime_t(buffer().fileName().lastModified()).time();

	Kornel
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