Without “CXXFLAGS=-O3”, boots can only runs 20M ips on my i5 mbpr. With that, now is 57M ips.
CXXFLAGS=-O3 ./configure --prefix=/toolchain/ --enable-debugger --enable-disasm --disable-debugger-gui --with-rfb --disable-readline --with-sdl2 --enable-all-optimizations --enable-fpu --enable-show-ips