Rainer has released CPCemu v2.4. It's available for MacOS, Android, iOS, Linux (x86_64 and ARM, in particular on Raspberry Pi) and Windows.

New version features :

• Original (virtual) CPC keyboard in 4 different languages. Click/touch near the bottom border to get it
• Loading firmware ROMs (0 and 255) from the running emulator (setup menu)
• Upgrade to the latest SDL version (2.0.18). If you don't get the virtual keyboard, the on-screen joystick and the graphical main menu on Linux (Intel and ARM/Raspberry) I recommend upgrading your installed SDL version
• Correction of many errors (M4 file names, M4 sockets, sound output, restart of emulation, error tolerance, screen layout, Z80 R register)