On Mon, Dec 28, 2020 at 09:12:05PM +0200, Yuriy Skalko wrote: > > Tried at ab7ac800. At least it should be compilable with any c++ compiler. > > > > Kornel > > Now LyX can be successfully compiled with C++20 compiler. The attached patch > fixes C++20-specific deprecation warning (`this` in lambdas must be captured > explicitly), it should not affect earlier C++ versions.
Thanks for working on this, Yuriy! I'm not sure if the following is
helpful, but curent master fails for me with GCC and Clang with C++20 on
Ubuntu 20.10. Here are details in case you or anyone else is motivated
to take a look:
/home/vbox/lyxbuilds/master-clang/repo/src/mathed/MathParser.cpp:373:21: error:
use of deleted function ‘std::basic_ostream<char, _Traits>&
std::operator<<(std::basic_ostream<char, _Traits>&, wchar_t) [with _Traits =
std::char_traits<char>]’
373 | os << t.character();
Clang gives the following:
[ 72%] Building CXX object src/mathed/CMakeFiles/mathed.dir/MathParser.cpp.o
cd /home/vbox/lyxbuilds/master-clang/CMakeBuild/src/mathed && /usr/bin/clang++
-DBOOST_USER_CONFIG="<config.h>" -DHUNSPELL_STATIC -DQT_CORE_LIB
-I/home/vbox/lyxbuilds/master-clang/CMakeBuild -I/home/vbox/lyxbui
lds/master-clang/repo/src -I/usr/include/enchant-2
-I/home/vbox/lyxbuilds/master-clang/repo/3rdparty/hunspell/1.7.0/src/hunspell
-I/home/vbox/lyxbuilds/master-clang/repo/3rdparty/hunspell/1.7.0/src
-I/home/vbox/lyxbuilds/master-clang/repo/3rdparty/boost
-I/home/vbox/lyxbuilds/master-clang/repo/3rdparty/nod
-I/home/vbox/lyxbuilds/master-clang/repo/src/mathed -isystem
/usr/include/x86_64-linux-gnu/qt5 -isystem /usr/inclu
de/x86_64-linux-gnu/qt5/QtCore -isystem
/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++ -Wall -Wextra
-Wno-deprecated-copy --std=c++20 -Wno-deprecated-register -DENABLE_ASSERTIONS=1
-D_GLIBCXX_DEBUG -D_GLIBCXX_
DEBUG_PEDANTIC -fno-strict-aliasing -O0 -g3 -D_DEBUG -Werror -fPIC
-std=c++2a -o CMakeFiles/mathed.dir/MathParser.cpp.o -c
/home/vbox/lyxbuilds/master-clang/repo/src/mathed/MathParser.cpp
/home/vbox/lyxbuilds/master-clang/repo/src/mathed/MathParser.cpp:373:6: error:
overload resolution selected deleted operator '<<'
os <<
t.character();
~~ ^ ~~~~~~~~~~~~~
$ g++ --version
g++ (Ubuntu 10.2.0-13ubuntu1) 10.2.0
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ clang++ --version
Ubuntu clang version 11.0.0-2
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Scott
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