Re: py312-qt6-qscintilla-2.14.1nb11 C++ version mismatch?

To: Rhialto <rhialto%falu.nl@localhost>
Subject: Re: py312-qt6-qscintilla-2.14.1nb11 C++ version mismatch?
From: Greg Troxel <gdt%lexort.com@localhost>
Date: Sat, 28 Mar 2026 15:33:29 -0400
Rhialto <rhialto%falu.nl@localhost> writes:

> I am rebuilding my packages. As an experiment I am using bob the builder
> for it now, instead of my usual pkg_comp1 sandbox with pkg_chk.
>
> I find that py312-qt6-qscintilla-2.14.1nb11 doesn't build.

Did qt6-qtscintilla build ok?

x11/qt6-qtscintilla has USE_LANGUAGES of c++, and no obvious
USE_CXX_FEATURES, but when you ask for the variable it has c++11

newer gcc tends to default to newer standards and this can fail to
build old code.  You didn't turn on normal build output, unhelpfully
hidden by trendy build systems, so I can't see if there is a --std=
argument.  I hold that calling a compiler without --std is basically a
bug.

python 312 is old.  what happens when you try 313?

What happens if you build without bob?  (unlikely to be different, but)
  


> I have a global GCC_REQD+=12 because some packages need at least that
> version. But I have a small suspicion that this causes a "wrong" version
> of c++ to be used for py312-qt6-qscintilla, causing the build errors.
> (because I haven't seen other reports of build failures)
>
> From the errors below, is it easy to see which version of C++ I should
> specify, or can I only use trial and error?
>
> => "/usr/bin/make" ["-C", "/usr/pkgsrc/x11/py-qt6-qscintilla", "all", "BATCH=1", "DEPENDS_TARGET=/nonexistent", "PYTHON_VERSION_REQD=312", "WRKLOG=/mnt/scratch/scratch/tmp/bobdir/db/logs/py312-qt6-qscintilla-2.14.1nb11/work.log"]
> => Bootstrap dependency digest>=20211023: found digest-20220214
> ===> _pkgformat-check-vulnerable [py312-qt6-qscintilla-2.14.1nb11] ===> Skipping vulnerability checks.
> WARNING: No /var/db/pkg/pkg-vulnerabilities file found.
> WARNING: To fix run: `/usr/sbin/pkg_admin -K /var/db/pkg fetch-pkg-vulnerabilities'.
> ===> build-message [py312-qt6-qscintilla-2.14.1nb11] ===> Building for py312-qt6-qscintilla-2.14.1nb11
> * Building wheel...
> pyproject.toml: line 7: using '[tool.sip.metadata]' to specify the project metadata is deprecated and will be removed in SIP v7.0.0, use '[project]' instead
> Querying qmake about your Qt installation...
> Checking to see if the Qsci bindings can be built...
> These bindings will be built: Qsci.
> Generating the Qsci bindings...
> Generating the .pro file for the Qsci module...
> Generating the top-level .pro file...
> Generating the Makefiles...
> Compiling the project...
> _in_process.py: 'make' failed returning 1
>                  from /usr/pkg/qt6/include/QtCore/QMetaType:1,
>                  from sipAPIQsci.h:33,
>                  from sipQsciQsciLexerVHDL.cpp:24:
> /usr/pkg/qt6/include/QtCore/qbytearrayview.h:143:15: note: candidate: 'constexpr QByteArrayView::QByteArrayView(std::nullptr_t)'
>   143 |     constexpr QByteArrayView(std::nullptr_t) noexcept
>       |               ^~~~~~~~~~~~~~
> /usr/pkg/qt6/include/QtCore/qbytearrayview.h:143:30: note:   no known conversion for argument 1 from 'const QByteArray' to 'std::nullptr_t'
>   143 |     constexpr QByteArrayView(std::nullptr_t) noexcept
>       |                              ^~~~~~~~~~~~~~
> /usr/pkg/qt6/include/QtCore/qbytearrayview.h:141:15: note: candidate: 'constexpr QByteArrayView::QByteArrayView()'
>   141 |     constexpr QByteArrayView() noexcept
>       |               ^~~~~~~~~~~~~~
> /usr/pkg/qt6/include/QtCore/qbytearrayview.h:141:15: note:   candidate expects 0 arguments, 1 provided
> /usr/pkg/qt6/include/QtCore/qbytearrayview.h:85:21: note: candidate: 'constexpr QByteArrayView::QByteArrayView(const QByteArrayView&)'
>    85 | class Q_CORE_EXPORT QByteArrayView
>       |                     ^~~~~~~~~~~~~~
> /usr/pkg/qt6/include/QtCore/qbytearrayview.h:85:21: note:   no known conversion for argument 1 from 'const QByteArray' to 'const QByteArrayView&'
> /usr/pkg/qt6/include/QtCore/qbytearrayview.h:85:21: note: candidate: 'constexpr QByteArrayView::QByteArrayView(QByteArrayView&&)'
> /usr/pkg/qt6/include/QtCore/qbytearrayview.h:85:21: note:   no known conversion for argument 1 from 'const QByteArray' to 'QByteArrayView&&'
> In file included from /usr/pkg/qt6/include/QtCore/qglobal.h:45,
>                  from /usr/pkg/qt6/include/QtCore/qmetatype.h:9,
>                  from /usr/pkg/qt6/include/QtCore/QMetaType:1,
>                  from sipAPIQsci.h:33,
>                  from sipQsciQsciLexerVHDL.cpp:24:
> /usr/pkg/qt6/include/QtCore/qtypeinfo.h: In instantiation of 'class QTypeInfo<unsigned int>':
> /usr/pkg/qt6/include/QtCore/qarraydataops.h:827:23:   required by substitution of 'template<class T> struct QtPrivate::QArrayOpsSelector<T, typename std::enable_if<(QTypeInfo<T>::isComplex && QTypeInfo<T>::isRelocatable)>::type> [with T = unsigned int]'
> /usr/pkg/qt6/include/QtCore/qarraydataops.h:834:8:   required from 'struct QtPrivate::QCommonArrayOps<unsigned int>'
> /usr/pkg/qt6/include/QtCore/qarraydataops.h:918:8:   required from 'struct QArrayDataOps<unsigned int>'
> /usr/pkg/qt6/include/QtCore/qarraydatapointer.h:109:22:   required from 'QArrayDataPointer<T>::~QArrayDataPointer() [with T = unsigned int]'
> /usr/pkg/qt6/include/QtCore/qlist.h:76:7:   required from here
> /usr/pkg/qt6/include/QtCore/qtypeinfo.h:65:10: error: enumerator value for 'isComplex' is not an integer constant
>    65 |     enum {
>       |          ^
> /usr/pkg/qt6/include/QtCore/qtypeinfo.h:65:10: error: enumerator value for 'isRelocatable' is not an integer constant
> /usr/pkg/qt6/include/QtCore/qtypeinfo.h:65:10: error: enumerator value for 'isValueInitializationBitwiseZero' is not an integer constant
> In file included from /usr/pkg/qt6/include/QtCore/qarraydatapointer.h:7,
>                  from /usr/pkg/qt6/include/QtCore/qbytearray.h:12,
>                  from /usr/pkg/qt6/include/QtCore/qmetatype.h:11,
>                  from /usr/pkg/qt6/include/QtCore/QMetaType:1,
>                  from sipAPIQsci.h:33,
>                  from sipQsciQsciLexerVHDL.cpp:24:
> /usr/pkg/qt6/include/QtCore/qarraydataops.h: In instantiation of 'struct QtPrivate::QArrayOpsSelector<unsigned int, void>':
> /usr/pkg/qt6/include/QtCore/qarraydataops.h:834:8:   required from 'struct QtPrivate::QCommonArrayOps<unsigned int>'
> /usr/pkg/qt6/include/QtCore/qarraydataops.h:918:8:   required from 'struct QArrayDataOps<unsigned int>'
> /usr/pkg/qt6/include/QtCore/qarraydatapointer.h:109:22:   required from 'QArrayDataPointer<T>::~QArrayDataPointer() [with T = unsigned int]'
> /usr/pkg/qt6/include/QtCore/qlist.h:76:7:   required from here
> /usr/pkg/qt6/include/QtCore/qarraydataops.h:827:33: warning: enum constant in boolean context [-Wint-in-bool-context]
>   827 |         QTypeInfo<T>::isComplex && QTypeInfo<T>::isRelocatable
>       |                       ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /usr/pkg/qt6/include/QtCore/qarraydataops.h:827:33: warning: enum constant in boolean context [-Wint-in-bool-context]
> /usr/pkg/qt6/include/QtCore/qarraydataops.h:827:33: warning: enum constant in boolean context [-Wint-in-bool-context]
> /usr/pkg/qt6/include/QtCore/qarraydataops.h:827:33: warning: enum constant in boolean context [-Wint-in-bool-context]
> /usr/pkg/qt6/include/QtCore/qarraydataops.h:827:33: warning: enum constant in boolean context [-Wint-in-bool-context]
> /usr/pkg/qt6/include/QtCore/qarraydataops.h:827:33: warning: enum constant in boolean context [-Wint-in-bool-context]
> In file included from /usr/pkg/qt6/include/QtGui/qfont.h:8,
>                  from /usr/pkg/qt6/include/QtGui/QFont:1,
>                  from /usr/pkg/qt6/include/Qsci/qscilexer.h:25,
>                  from /usr/pkg/qt6/include/Qsci/qscilexervhdl.h:27,
>                  from /tmpfs/x11/py-qt6-qscintilla/work.x86_64/QScintilla_src-2.14.1/Python/sip/qscilexervhdl.sip:24:
> /usr/pkg/qt6/include/QtCore/qendian.h: In instantiation of 'Float qbswapFloatHelper(Float) [with Float = qfloat16]':
> /usr/pkg/qt6/include/QtCore/qendian.h:137:36:   required from here
> /usr/pkg/qt6/include/QtCore/qendian.h:131:18: error: call of overloaded 'qbswap(short unsigned int&)' is ambiguous
>   131 |     temp = qbswap(temp);
>       |            ~~~~~~^~~~~~
> /usr/pkg/qt6/include/QtCore/qendian.h:110:27: note: candidate: 'constexpr quint128 qbswap(quint128)'
>   110 | inline constexpr quint128 qbswap(quint128 source)
>       |                           ^~~~~~
> /usr/pkg/qt6/include/QtCore/qendian.h:119:26: note: candidate: 'constexpr qint128 qbswap(qint128)'
>   119 | inline constexpr qint128 qbswap(qint128 source)
>       |                          ^~~~~~
> /usr/pkg/qt6/include/QtCore/qendian.h: In instantiation of 'Float qbswapFloatHelper(Float) [with Float = float]':
> /usr/pkg/qt6/include/QtCore/qendian.h:142:36:   required from here
> /usr/pkg/qt6/include/QtCore/qendian.h:131:18: error: call of overloaded 'qbswap(unsigned int&)' is ambiguous
>   131 |     temp = qbswap(temp);
>       |            ~~~~~~^~~~~~
> /usr/pkg/qt6/include/QtCore/qendian.h:110:27: note: candidate: 'constexpr quint128 qbswap(quint128)'
>   110 | inline constexpr quint128 qbswap(quint128 source)
>       |                           ^~~~~~
> /usr/pkg/qt6/include/QtCore/qendian.h:119:26: note: candidate: 'constexpr qint128 qbswap(qint128)'
>   119 | inline constexpr qint128 qbswap(qint128 source)
>       |                          ^~~~~~
> /usr/pkg/qt6/include/QtCore/qendian.h: In instantiation of 'Float qbswapFloatHelper(Float) [with Float = double]':
> /usr/pkg/qt6/include/QtCore/qendian.h:147:36:   required from here
> /usr/pkg/qt6/include/QtCore/qendian.h:131:18: error: call of overloaded 'qbswap(long long unsigned int&)' is ambiguous
>   131 |     temp = qbswap(temp);
>       |            ~~~~~~^~~~~~
> /usr/pkg/qt6/include/QtCore/qendian.h:110:27: note: candidate: 'constexpr quint128 qbswap(quint128)'
>   110 | inline constexpr quint128 qbswap(quint128 source)
>       |                           ^~~~~~
> /usr/pkg/qt6/include/QtCore/qendian.h:119:26: note: candidate: 'constexpr qint128 qbswap(qint128)'
>   119 | inline constexpr qint128 qbswap(qint128 source)
>       |                          ^~~~~~
> *** Error code 1
>
> Stop.
> make[1]: stopped in /tmp/tmpbb_otur9/Qsci
> *** Error code 1
>
> Stop.
> make: stopped in /tmp/tmpbb_otur9
> To see the full output use the --verbose option.
>
> ERROR Backend subprocess exited when trying to invoke build_wheel
> *** Error code 1
>
> Stop.
> make[1]: stopped in /usr/pkgsrc/x11/py-qt6-qscintilla
> *** Error code 1
>
> Stop.
> make: stopped in /usr/pkgsrc/x11/py-qt6-qscintilla
>
>
>
> -Olaf.
Follow-Ups:
- Re: py312-qt6-qscintilla-2.14.1nb11 C++ version mismatch?
  - From: Greg Troxel
References:
- py312-qt6-qscintilla-2.14.1nb11 C++ version mismatch?
  - From: Rhialto
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