build fails on i386 (looks like it's in a bundled copy of fmt),
also it ignores ports infrastructure and uses -O3 which it
shouldn't do:
FAILED: _deps/fmt-build/CMakeFiles/fmt.dir/src/format.cc.o
/pobj/yosys-0.70/bin/c++ -I/pobj/yosys-0.70/yosys-0.70/libs/fmt/include -O2
-pipe -O3 -std=gnu++20 -fPIC -Wall -Wextra -Werror=unused-variable
-Werror=unused-parameter -Werror=unused-function -MD -MT
_deps/fmt-build/CMakeFiles/fmt.dir/src/format.cc.o -MF
_deps/fmt-build/CMakeFiles/fmt.dir/src/format.cc.o.d -o
_deps/fmt-build/CMakeFiles/fmt.dir/src/format.cc.o -c
/pobj/yosys-0.70/yosys-0.70/libs/fmt/src/format.cc
In file included from /pobj/yosys-0.70/yosys-0.70/libs/fmt/src/format.cc:8:
In file included from
/pobj/yosys-0.70/yosys-0.70/libs/fmt/include/fmt/format-inl.h:28:
/pobj/yosys-0.70/yosys-0.70/libs/fmt/include/fmt/format.h:3108:14: error:
invalid argument type 'uint128' to unary expression
3108 | f.f &= ~(inc - 1);
| ^~~~~~~~~~
