On Ubuntu 20.04, I try to compile the git master version of libime https://github.com/fcitx/libime but failed. See following for more detailed info: $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 20.04 LTS Release: 20.04 Codename: focal $ git clone https://github.com/fcitx/libime.git libime.git $ cd libime.git $ mkdir build && cd $_ $ cmake .. $ env all_proxy=http://127.0.0.1:8080 make -j 44 [ 28%] Built target kenlm [ 28%] Building CXX object src/libime/core/CMakeFiles/IMECore.dir/inputbuffer.cpp.o In file included from /home/werner/Public/repo/github.com/fcitx/libime.git/src/libime/core/inputbuffer.cpp:6: /home/werner/Public/repo/github.com/fcitx/libime.git/src/libime/core/inputbuffer.h: In member function ‘bool libime::InputBuffer::type(std::string_view)’: /home/werner/Public/repo/github.com/fcitx/libime.git/src/libime/core/inputbuffer.h:49:48: error: void value not ignored as it ought to be 49 | bool type(std::string_view s) { return type(s.data(), s.length()); } | ~~~~^~~~~~~~~~~~~~~~~~~~~~ make[2]: *** [src/libime/core/CMakeFiles/IMECore.dir/build.make:102: src/libime/core/CMakeFiles/IMECore.dir/inputbuffer.cpp.o] Error 1 make[1]: *** [CMakeFiles/Makefile2:816: src/libime/core/CMakeFiles/IMECore.dir/all] Error 2 make: *** [Makefile:141: all] Error 2 Any hints for solving this problem? Regards, -- Assoc. Prof. Hongyi Zhao <hongyi.zhao@xxxxxxxxx> Theory and Simulation of Materials Hebei Polytechnic University of Science and Technology engineering NO. 552 North Gangtie Road, Xingtai, China