CMake fails on first configure

[Kornel Benko]

Am Sun, 22 Oct 2023 20:48:38 +0200
schrieb Yu Jin <technikmagma at gmail.com>:

> Am So., 22. Okt. 2023 um 17:32 Uhr schrieb Kornel Benko:
> 
> > Am Sun, 22 Oct 2023 10:22:54 +0200
> > schrieb Yu Jin:
> >
> > > Am Sa., 21. Okt. 2023 um 22:00 Uhr schrieb Yu Jin:
> > >
> > > > Am Sa., 21. Okt. 2023 um 19:42 Uhr schrieb Kornel Benko:
> > > >
> > > >>
> > > >> What bothers me, is that the following configure is OK.
> > > >> For me that implies that the first configure already created
> > > >> CMakeCache.txt.
> > > >> Could you compare the first CMakeCache.txt with later created version?
> > > >> Normally I would
> > > >> expect they have same content.
> > > >>
> > > >
> > > > Well the following configure does not do any checks or try_compile, so
> > it
> > > > can't run into this error .
> > > >
> > >
> > > I think it comes from here:
> > >
> > https://git.lyx.org/?p=lyx.git;a=blob;f=development/cmake/ConfigureChecks.cmake;h=9062372c38e107156a7e561bce340045b0cd53e0;hb=0b5a9060c2afc3e68b3b055ec5b02db7d13458ab#l287
> > > set(CMAKE_REQUIRED_INCLUDES ${${QtVal}Core_INCLUDE_DIRS})
> > >
> > > I just added a message after this line for testing message(STATUS
> > "includes
> > > set: "${${QtVal}Core_INCLUDE_DIRS})
> > > and it returns:
> > > includes set:
> > >
> > C:/Qt/6.6.0/msvc2019_64/include/QtCoreC:/Qt/6.6.0/msvc2019_64/includeC:/Qt/6.6.0/msvc2019_64/include/QtZlib$<$<BOOL:$<TARGET_PROPERTY:Qt6::ZlibPrivate,_qt_module_has_private_headers>>:>$<$<BOOL:$<TARGET_PROPERTY:Qt6::ZlibPrivate,_qt_module_has_private_headers>>:C:/Qt/6.6.0/msvc2019_64/include/QtZlib/6.6.0>$<$<BOOL:$<TARGET_PROPERTY:Qt6::ZlibPrivate,_qt_module_has_private_headers>>:C:/Qt/6.6.0/msvc2019_64/include/QtZlib/6.6.0/QtZlib>
> > >
> > > So exactly what is set in CMakeCache.txt of the try_compie project, so in
> > > the end it's set in ${Qt6Core_INCLUDE_DIRS}, which comes from Qt I
> > suppose,
> > > I guess I can make a minimal example with this and ask on the Qt forum...
> > >
> >
> > That asking the forum would be nice. And yes, Qt6Core_INCLUDE_DIRS comes
> > from Qt, not our
> >
> 
> What does it contain on Linux though? could you try with a simple
> message(STATUS  ${Qt6Core_INCLUDE_DIRS})
> ?

Qt6Core_INCLUDE_DIRS =
/usr/include/x86_64-linux-gnu/qt6/QtCore;/usr/include/x86_64-linux-gnu/qt6

This is also with cmake3.28

	Kornel
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