[LyX/master] Add move constructor and move assignment operator for FileName class

[Stephan Witt]

Am 21.01.2021 um 08:05 schrieb Yuriy Skalko <yuriy.skalko at gmail.com>:
> 
>> I've tried to reproduce on Linux with Clang and libc++ but cannot.
>> However, one thing that I do not understand is that in the output from
>> ldd, both libstdc++.so.6 and libc++.so.1 show up. See attached. Is this
>> expected?
>> Scott
>>        linux-vdso.so.1 (0x00007ffd059e5000)
>>        libmythes-1.2.so.0 => /lib/x86_64-linux-gnu/libmythes-1.2.so.0 (0x00007f990dad1000)
>>        libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007f990d993000)
>>        libQt5X11Extras.so.5 => /lib/x86_64-linux-gnu/libQt5X11Extras.so.5 (0x00007f990d98c000)
>>        libxcb.so.1 => /lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f990d962000)
>>        libenchant-2.so.2 => /lib/x86_64-linux-gnu/libenchant-2.so.2 (0x00007f990d954000)
>>        libmagic.so.1 => /lib/x86_64-linux-gnu/libmagic.so.1 (0x00007f990d92c000)
>>        libQt5Concurrent.so.5 => /lib/x86_64-linux-gnu/libQt5Concurrent.so.5 (0x00007f990d921000)
>>        libQt5Svg.so.5 => /lib/x86_64-linux-gnu/libQt5Svg.so.5 (0x00007f990d8c5000)
>>        libQt5Widgets.so.5 => /lib/x86_64-linux-gnu/libQt5Widgets.so.5 (0x00007f990d229000)
>>        libQt5Gui.so.5 => /lib/x86_64-linux-gnu/libQt5Gui.so.5 (0x00007f990cb71000)
>>        libQt5Core.so.5 => /lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007f990c633000)
>>        libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f990c616000)
>>        libc++.so.1 => /lib/x86_64-linux-gnu/libc++.so.1 (0x00007f990c54e000)
>>        libc++abi.so.1 => /lib/x86_64-linux-gnu/libc++abi.so.1 (0x00007f990c516000)
>>        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f990c3c7000)
>>        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f990c3ac000)
>>        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f990c1c2000)
>>        /lib64/ld-linux-x86-64.so.2 (0x00007f990dafb000)
>>        libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f990bfe1000)
>>        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f990bfd9000)
>>        libXau.so.6 => /lib/x86_64-linux-gnu/libXau.so.6 (0x00007f990bfd3000)
>>        libXdmcp.so.6 => /lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f990bfcb000)
>>        libgmodule-2.0.so.0 => /lib/x86_64-linux-gnu/libgmodule-2.0.so.0 (0x00007f990bfc5000)
>>        libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f990be93000)
>>        liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f990be6a000)
>>        libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007f990be55000)
>>        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f990be33000)
>>        libGL.so.1 => /lib/x86_64-linux-gnu/libGL.so.1 (0x00007f990bdab000)
>>        libpng16.so.16 => /lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f990bd72000)
>>        libharfbuzz.so.0 => /lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007f990bc91000)
>>        libmd4c.so.0 => /lib/x86_64-linux-gnu/libmd4c.so.0 (0x00007f990bc7d000)
>>        libdouble-conversion.so.3 => /lib/x86_64-linux-gnu/libdouble-conversion.so.3 (0x00007f990bc65000)
>>        libicui18n.so.67 => /lib/x86_64-linux-gnu/libicui18n.so.67 (0x00007f990b953000)
>>        libicuuc.so.67 => /lib/x86_64-linux-gnu/libicuuc.so.67 (0x00007f990b767000)
>>        libpcre2-16.so.0 => /lib/x86_64-linux-gnu/libpcre2-16.so.0 (0x00007f990b6e4000)
>>        libzstd.so.1 => /lib/x86_64-linux-gnu/libzstd.so.1 (0x00007f990b614000)
>>        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f990b607000)
>>        libatomic.so.1 => /lib/x86_64-linux-gnu/libatomic.so.1 (0x00007f990b5fd000)
>>        libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f990b5e3000)
>>        libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f990b570000)
>>        libGLdispatch.so.0 => /lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f990b4b8000)
>>        libGLX.so.0 => /lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f990b482000)
>>        libfreetype.so.6 => /lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f990b3bf000)
>>        libgraphite2.so.3 => /lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007f990b392000)
>>        libicudata.so.67 => /lib/x86_64-linux-gnu/libicudata.so.67 (0x00007f9909879000)
>>        libbrotlidec.so.1 => /lib/x86_64-linux-gnu/libbrotlidec.so.1 (0x00007f990986b000)
>>        libbrotlicommon.so.1 => /lib/x86_64-linux-gnu/libbrotlicommon.so.1 (0x00007f9909846000)
> 
> Yes, this is expected, since system libQt5*.so are dependent on libstdc++ (assuming you haven't rebuild Qt with libc++). ldd displays all required libraries, not only the ones that directly used by the application.
> 
> So, seems that the issue with move constuctor patch is shown up only on macOS. Now I'm not sure how to debug it, since I have no Mac.

I’m using self compiled Qt libraries with LyX on Mac.

Stephan