Should it work w/o -std=c++17? What do expect to happen with different
compiler switches for build of Qt-libs and LyX?
On GCC it works now with all standards: from C++11 to C++20.
The show stopper with -mmacosx-version-min=10.10 is:
/Users/stephan/git/lyx/src/insets/ExternalTransforms.cpp:334:20: error:
'any_cast<std::__1::function<std::__1::unique_ptr<const
lyx::external::TransformCommand, std::__1::default_delete<const
lyx::external::TransformCommand> > (lyx::external::RotationData)> >' is
unavailable: introduced in macOS 10.14
Factory factory = any_cast<Factory>(any_factory);
Now for C++17 we are using `any` and `any_cast` implementations from
standard library (instead of boost's for earlier standards). Seems like
it is somehow broken on macOS.
Try to leave only the boost conditional compilation branch in support/any.h:
#include <boost/any.hpp>
namespace lyx {
using boost::any;
using boost::any_cast;
}
Yuriy
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